/* ----------------------------------------------------------------------------
 * VSTGUI for X11/LV2/PNG
 * Author: Dave Robillard
 * Released under the revised BSD license, as below
 * ----------------------------------------------------------------------------
 *
 * Based on:
 * ----------------------------------------------------------------------------
 * VSTGUIL: Graphical User Interface Framework for VST plugins on LINUX
 * Version: 0.1, Date: 2007/01/21
 * Author: kRAkEn/gORe
 *
 * Which was based on:
 * ----------------------------------------------------------------------------
 * VSTGUI: Graphical User Interface Framework for VST plugins
 * Version 3.0       $Date: 2005/08/12 12:45:00 $
 * ----------------------------------------------------------------------------
 * VSTGUI LICENSE
 * 2004, Steinberg Media Technologies, All Rights Reserved
 * ----------------------------------------------------------------------------
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the Steinberg Media Technologies nor the names of
 *     its contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A  PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE  OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 * ----------------------------------------------------------------------------
 */

#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <iostream>
#include <string.h>

#include "vstgui.h"
#include "audioeffectx.h"
#include "vstkeycode.h"

//-----------------------------------------------------------------------------
// Some defines
//-----------------------------------------------------------------------------
#ifdef DEBUG
    #define DBG(x)              std::cout << x << std::endl;
    #define assertfalse         assert (false);
#else
    #define DBG(x)
    #define assertfalse
#endif

#define USE_ALPHA_BLEND            0
#define USE_CLIPPING_DRAWRECT      1
#define NEW_UPDATE_MECHANISM       1


//-----------------------------------------------------------------------------
// our global display
Display* display = 0;


//-----------------------------------------------------------------------------
// AEffGUIEditor Implementation
//-----------------------------------------------------------------------------
#define kIdleRate    100 // host idle rate in ms
#define kIdleRate2    50
#define kIdleRateMin   4 // minimum time between 2 idles in ms

//-----------------------------------------------------------------------------
VstInt32 AEffGUIEditor::knobMode = kCircularMode;

//-----------------------------------------------------------------------------
AEffGUIEditor::AEffGUIEditor (AudioEffect* effect)
: AEffEditor (effect),
  lLastTicks (0),
  inIdleStuff (false),
  frame (0)
{
    rect.left = rect.top = rect.right = rect.bottom = 0;
    lLastTicks = getTicks ();

    effect->setEditor (this);
}

//-----------------------------------------------------------------------------
AEffGUIEditor::~AEffGUIEditor ()
{
}

//-----------------------------------------------------------------------------
void AEffGUIEditor::setParameter (VstInt32 index, float value)
{}

//-----------------------------------------------------------------------------
void AEffGUIEditor::beginEdit (VstInt32 index)
{
    ((AudioEffectX*)effect)->beginEdit (index);
}

//-----------------------------------------------------------------------------
void AEffGUIEditor::endEdit (VstInt32 index)
{
    ((AudioEffectX*)effect)->endEdit (index);
}

//-----------------------------------------------------------------------------
#if VST_2_1_EXTENSIONS
long AEffGUIEditor::onKeyDown (VstKeyCode& keyCode)
{
    return frame && frame->onKeyDown (keyCode) == 1 ? 1 : 0;
}

//-----------------------------------------------------------------------------
long AEffGUIEditor::onKeyUp (VstKeyCode& keyCode)
{
    return frame && frame->onKeyUp (keyCode) == 1 ? 1 : 0;
}

//-----------------------------------------------------------------------------
long AEffGUIEditor::setKnobMode (VstInt32 val)
{
    knobMode = val;
    return 1;
}

//-----------------------------------------------------------------------------
bool AEffGUIEditor::onWheel (float distance)
{
/*
    if (frame)
    {
        CDrawContext context (frame, NULL, systemWindow);
        CPoint where;
        context.getMouseLocation (where);
        return frame->onWheel (&context, where, distance);
    }
*/
    return false;
}
#endif

//-----------------------------------------------------------------------------
long AEffGUIEditor::getRect (ERect **ppErect)
{
    *ppErect = &rect;
    return 1;
}

//-----------------------------------------------------------------------------
void AEffGUIEditor::idle ()
{
    if (inIdleStuff)
        return;

    AEffEditor::idle ();
    if (frame)
        frame->idle ();
}

//-----------------------------------------------------------------------------
void AEffGUIEditor::wait (unsigned int ms)
{
    usleep (ms * 1000);
}

//-----------------------------------------------------------------------------
unsigned int AEffGUIEditor::getTicks ()
{
    return _getTicks ();
}

//-----------------------------------------------------------------------------
void AEffGUIEditor::doIdleStuff ()
{
    // get the current time
    unsigned int currentTicks = getTicks ();

    // YG TEST idle ();
    if (currentTicks < lLastTicks)
    {
        wait (kIdleRateMin);

        currentTicks += kIdleRateMin;
        if (currentTicks < lLastTicks - kIdleRate2)
            return;
    }

    idle ();

    // save the next time
    lLastTicks = currentTicks + kIdleRate;

    inIdleStuff = true;

    if (effect)
        effect->masterIdle ();

    inIdleStuff = false;
}

void AEffGUIEditor::update ()
{
    if (frame)
        frame->invalidate (CRect (0, 0, rect.right, rect.bottom));
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------

//---For Debugging------------------------
#if DEBUG
long gNbCBitmap = 0;
long gNbCView = 0;
long gNbCDrawContext = 0;
long gNbCOffscreenContext = 0;
long gBitmapAllocation = 0;
long gNbDC = 0;
#include <stdarg.h>
void DebugPrint (const char *format, ...);
void DebugPrint (const char *format, ...)
{
    char string[300];
    va_list marker;
    va_start (marker, format);
    vsprintf (string, format, marker);
    if (!strcmp(string, ""))
        strcpy (string, "Empty string\n");
    fprintf (stderr, string);
}
#endif
//---End For Debugging------------------------

#include <assert.h>
#include <time.h>
#include <stdlib.h>
#include <math.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#define XDRAWPARAM display, (Window)pWindow, (GC) pSystemContext
#define XWINPARAM  display, (Window)pFrame->getWindow()
#define XGCPARAM   display, (GC) pSystemContext

// #define XDRAWPARAM display, (Window)pWindow, (GC)pSystemContext
// #define XWINPARAM  display, (Window)pWindow
// #define XGCPARAM   display, (GC)pSystemContext

// init the static variable about font
bool gFontInit = false;
XFontStruct *gFontStructs[] = {0, 0, 0, 0, 0, 0, 0, 0, 0};

struct SFontTable { const char* name; const char* string; };

static SFontTable gFontTable[] = {
  {"SystemFont",          "-*-fixed-*-*-*--12-*-*-*-*-*-*-*"}, // kSystemFont
  {"NormalFontVeryBig",   "-*-fixed-*-*-*--18-*-*-*-*-*-*-*"}, // kNormalFontVeryBig
  {"NormalFontBig",       "-*-fixed-*-*-*--18-*-*-*-*-*-*-*"}, // kNormalFontBig
  {"NormalFont",          "-*-fixed-*-*-*--12-*-*-*-*-*-*-*"}, // kNormalFont
  {"NormalFontSmall",     "-*-courier-*-*-*--10-*-*-*-*-*-*-*"}, // kNormalFontSmall
  {"NormalFontSmaller",   "-*-courier-*-*-*--9-*-*-*-*-*-*-*"}, // kNormalFontSmaller
  {"NormalFontVerySmall", "-*-courier-*-*-*--8-*-*-*-*-*-*-*"}, // kNormalFontVerySmall
  {"SymbolFont",          "-*-fixed-*-*-*--12-*-*-*-*-*-*-*"}  // kSymbolFont
};

long gStandardFontSize[] = { 12, 18, 18, 12, 10, 9, 8, 13 };

// declaration of different local functions
static long convertPoint2Angle (CPoint &pm, CPoint &pt);

// stuff for color
long CDrawContext::nbNewColor = 0;

//-----------------------------------------------------------------------------
bool CRect::pointInside (const CPoint& where) const
{
    return where.h >= left && where.h < right && where.v >= top && where.v < bottom;
}

//-----------------------------------------------------------------------------
bool CRect::isEmpty () const
{
    if (right <= left)
        return true;
    if (bottom <= top)
        return true;
    return false;
}

//-----------------------------------------------------------------------------
void CRect::bound (const CRect& rect)
{
    if (left < rect.left)
        left = rect.left;
    if (top < rect.top)
        top = rect.top;
    if (right > rect.right)
        right = rect.right;
    if (bottom > rect.bottom)
        bottom = rect.bottom;
    if (bottom < top)
        bottom = top;
    if (right < left)
        right = left;
}

namespace VSTGUI {

char* bundlePath = NULL;
void setBundlePath(const char* path) {
	VSTGUI::bundlePath = strdup(path);
}

CColor kTransparentCColor = {255, 255, 255,   0};
CColor kBlackCColor       = {  0,   0,   0, 255};
CColor kWhiteCColor       = {255, 255, 255, 255};
CColor kGreyCColor        = {127, 127, 127, 255};
CColor kRedCColor         = {255,   0,   0, 255};
CColor kGreenCColor       = {  0, 255,   0, 255};
CColor kBlueCColor        = {  0,   0, 255, 255};
CColor kYellowCColor      = {255, 255,   0, 255};
CColor kMagentaCColor     = {255,   0, 255, 255};
CColor kCyanCColor        = {  0, 255, 255, 255};

#define kDragDelay 0

//-----------------------------------------------------------------------------
// CDrawContext Implementation
//-----------------------------------------------------------------------------
/**
 * CDrawContext constructor.
 * @param inFrame the parent CFrame
 * @param inSystemContext the platform system context, can be NULL
 * @param inWindow the platform window object
 */
CDrawContext::CDrawContext (CFrame *inFrame, void *inSystemContext, void *inWindow)
: pSystemContext (inSystemContext)
, pWindow (inWindow)
, pFrame (inFrame)
, fontSize (-1)
, fontStyle (0)
, fontId (kNumStandardFonts)
, frameWidth (0)
, lineStyle (kLineOnOffDash)
, drawMode (kAntialias)
{
#if DEBUG
    gNbCDrawContext++;
#endif

    // initialize values
    if (pFrame)
        pFrame->getViewSize (clipRect);
    else
        clipRect (0, 0, 1000, 1000);

    const CColor notInitalized = {0, 0, 0, 0};
    frameColor = notInitalized;
    fillColor  = notInitalized;
    fontColor  = notInitalized;

    // offsets use by offscreen
    offset (0, 0);
    offsetScreen (0, 0);

    // set the current font
    if (pSystemContext)
    {
        // set the default values
        setFont (kNormalFont);
        setFrameColor (kWhiteCColor);
        setLineStyle (kLineSolid);
        setLineWidth (1);
        setFont (kSystemFont);
        setDrawMode (kCopyMode);
    }
}

//-----------------------------------------------------------------------------
CDrawContext::~CDrawContext ()
{
#if DEBUG
    gNbCDrawContext--;
#endif
}

//-----------------------------------------------------------------------------
void CDrawContext::setLineStyle (CLineStyle style)
{
    if (lineStyle == style)
        return;

    lineStyle = style;

    long line_width;
    long line_style;
    if (frameWidth == 1)
        line_width = 0;
    else
        line_width = frameWidth;

    switch (lineStyle)
    {
    case kLineOnOffDash:
        line_style = LineOnOffDash;
        break;
    default:
        line_style = LineSolid;
        break;
    }

    XSetLineAttributes (XGCPARAM, line_width, line_style, CapNotLast, JoinRound);
}

//-----------------------------------------------------------------------------
void CDrawContext::setLineWidth (CCoord width)
{
    if (frameWidth == width)
        return;

    frameWidth = width;

    setLineStyle (lineStyle);
}

//-----------------------------------------------------------------------------
void CDrawContext::setDrawMode (CDrawMode mode)
{
    if (drawMode == mode)
        return;

    drawMode = mode;

    long iMode = 0;
    switch (drawMode)
    {
    case kXorMode :
        iMode = GXinvert;
        break;
    case kOrMode :
        iMode = GXor;
        break;
    default:
        iMode = GXcopy;
    }

    ((XGCValues*)pSystemContext)->function = iMode;

    XChangeGC (XGCPARAM, GCFunction, (XGCValues*)pSystemContext);
}

//------------------------------------------------------------------------------
void CDrawContext::setClipRect (const CRect &clip)
{
    CRect _clip (clip);
    _clip.offset (offset.h, offset.v);

    if (clipRect == _clip)
        return;

    clipRect = _clip;

    XRectangle r;
    r.x = 0;
    r.y = 0;
    r.width  = clipRect.right - clipRect.left + 1;
    r.height = clipRect.bottom - clipRect.top + 1;

    XSetClipRectangles (XGCPARAM, clipRect.left, clipRect.top, &r, 1, Unsorted);
}

//------------------------------------------------------------------------------
void CDrawContext::resetClipRect ()
{
    CRect newClip;
    if (pFrame)
        pFrame->getViewSize (newClip);
    else
        newClip (0, 0, 1000, 1000);

    setClipRect (newClip);

    clipRect = newClip;
}

//-----------------------------------------------------------------------------
void CDrawContext::moveTo (const CPoint &_point)
{
    CPoint point (_point);
    point.offset (offset.h, offset.v);

    penLoc = point;
}

//-----------------------------------------------------------------------------
void CDrawContext::lineTo (const CPoint& _point)
{
    CPoint point (_point);
    point.offset (offset.h, offset.v);

    CPoint start (penLoc);
    CPoint end (point);
    if (start.h == end.h)
    {
        if (start.v < -5)
            start.v = -5;
        else if (start.v > 10000)
            start.v = 10000;

        if (end.v < -5)
            end.v = -5;
        else if (end.v > 10000)
            end.v = 10000;
    }
    if (start.v == end.v)
    {
        if (start.h < -5)
            start.h = -5;
        else if (start.h > 10000)
            start.h = 10000;

        if (end.h < -5)
            end.h = -5;
        else if (end.h > 10000)
            end.h = 10000;
    }

    XDrawLine (XDRAWPARAM, start.h, start.v, end.h, end.v);

    // keep trace of the new position
    penLoc = point;
}

//-----------------------------------------------------------------------------
void CDrawContext::drawLines (const CPoint* points, const long& numLines)
{
    // default implementation, when no platform optimized code is implemented
    for (long i = 0; i < numLines * 2; i+=2)
    {
        moveTo (points[i]);
        lineTo (points[i+1]);
    }
}

//-----------------------------------------------------------------------------
void CDrawContext::drawPolygon (const CPoint *pPoints, long numberOfPoints, const CDrawStyle drawStyle)
{
    if (drawStyle == kDrawFilled || drawStyle == kDrawFilledAndStroked)
        fillPolygon (pPoints, numberOfPoints);
    if (drawStyle == kDrawStroked || drawStyle == kDrawFilledAndStroked)
        polyLine (pPoints, numberOfPoints);
}

//-----------------------------------------------------------------------------
void CDrawContext::polyLine (const CPoint *pPoints, long numberOfPoints)
{
    XPoint* pt = (XPoint*)malloc (numberOfPoints * sizeof (XPoint));
    if (!pt)
        return;
    for (long i = 0; i < numberOfPoints; i++)
    {
        pt[i].x = (short)pPoints[i].h + offset.h;
        pt[i].y = (short)pPoints[i].v + offset.v;
    }

    XDrawLines (XDRAWPARAM, pt, numberOfPoints, CoordModeOrigin);

    free (pt);
}

//-----------------------------------------------------------------------------
void CDrawContext::fillPolygon (const CPoint *pPoints, long numberOfPoints)
{
    // convert the points
    XPoint* pt = (XPoint*)malloc (numberOfPoints * sizeof (XPoint));
    if (!pt)
        return;
    for (long i = 0; i < numberOfPoints; i++)
    {
        pt[i].x = (short)pPoints[i].h + offset.h;
        pt[i].y = (short)pPoints[i].v + offset.v;
    }

    XFillPolygon (XDRAWPARAM, pt, numberOfPoints, Convex, CoordModeOrigin);

    free (pt);
}

//-----------------------------------------------------------------------------
void CDrawContext::drawRect (const CRect &_rect, const CDrawStyle drawStyle)
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);

    XDrawRectangle (XDRAWPARAM, rect.left, rect.top, rect.width (), rect.height ());
}

//-----------------------------------------------------------------------------
void CDrawContext::fillRect (const CRect &_rect)
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);

    // Don't draw boundary
    XFillRectangle (XDRAWPARAM, rect.left + 1, rect.top + 1, rect.width () - 1, rect.height () - 1);
}

//-----------------------------------------------------------------------------
void CDrawContext::drawEllipse (const CRect &_rect, const CDrawStyle drawStyle)
{
    CPoint point (_rect.left + (_rect.right - _rect.left) / 2, _rect.top);
    drawArc (_rect, point, point);
}

//-----------------------------------------------------------------------------
void CDrawContext::fillEllipse (const CRect &_rect)
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);

    // Don't draw boundary
    CPoint point (_rect.left + ((_rect.right - _rect.left) / 2), _rect.top);
    fillArc (_rect, point, point);
}

//-----------------------------------------------------------------------------
void CDrawContext::drawPoint (const CPoint &_point, CColor color)
{
    CPoint point (_point);

    CColor oldframecolor = frameColor;
    setFrameColor (color);

    XDrawPoint (XDRAWPARAM, point.h, point.v);

    setFrameColor (oldframecolor);
}

//-----------------------------------------------------------------------------
CColor CDrawContext::getPoint (const CPoint& _point)
{
//    CPoint point (_point);
//    point.offset (offset.h, offset.v);

    assertfalse // not implemented !

    CColor color = kBlackCColor;
    return color;
}

//-----------------------------------------------------------------------------
void CDrawContext::floodFill (const CPoint& _start)
{
//    CPoint start (_start);
//    start.offset (offset.h, offset.v);

    assertfalse // not implemented !
}

//-----------------------------------------------------------------------------
void CDrawContext::drawArc (const CRect &_rect, const float _startAngle, const float _endAngle, const CDrawStyle drawStyle) // in degree
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);

    XDrawArc (XDRAWPARAM, rect.left, rect.top, rect.width (), rect.height (),
              (int) _startAngle * 64, (int) _endAngle * 64);
}

//-----------------------------------------------------------------------------
void CDrawContext::drawArc (const CRect &_rect, const CPoint &_point1, const CPoint &_point2)
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);
    CPoint point1 (_point1);
    point1.offset (offset.h, offset.v);
    CPoint point2 (_point2);
    point2.offset (offset.h, offset.v);

    int    angle1, angle2;
    if ((point1.v == point2.v) && (point1.h == point2.h))
    {
        angle1 = 0;
        angle2 = 23040; // 360 * 64
    }
    else
    {
        CPoint pm ((rect.left + rect.right) / 2, (rect.top + rect.bottom) / 2);
        angle1 = convertPoint2Angle (pm, point1);
        angle2 = convertPoint2Angle (pm, point2) - angle1;
        if (angle2 < 0)
            angle2 += 23040; // 360 * 64
    }

    XDrawArc (XDRAWPARAM, rect.left, rect.top, rect.width (), rect.height (),
              angle1, angle2);
}

//-----------------------------------------------------------------------------
void CDrawContext::fillArc (const CRect &_rect, const CPoint &_point1, const CPoint &_point2)
{
    CRect rect (_rect);
    rect.offset (offset.h, offset.v);
    CPoint point1 (_point1);
    point1.offset (offset.h, offset.v);
    CPoint point2 (_point2);
    point2.offset (offset.h, offset.v);

    // Don't draw boundary
    int    angle1, angle2;
    if ((point1.v == point2.v) && (point1.h == point2.h))
    {
        angle1 = 0;
        angle2 = 23040; // 360 * 64
    }
    else
    {
        CPoint pm ((rect.left + rect.right) / 2, (rect.top + rect.bottom) / 2);
        angle1 = convertPoint2Angle (pm, point1);
        angle2 = convertPoint2Angle (pm, point2);
    }

    XFillArc (XDRAWPARAM, rect.left, rect.top, rect.width (), rect.height (),
              angle1, angle2);
}

//-----------------------------------------------------------------------------
void CDrawContext::setFontColor (const CColor color)
{
    fontColor = color;

    setFrameColor (fontColor);
}

//-----------------------------------------------------------------------------
void CDrawContext::setFrameColor (const CColor color)
{
    if (frameColor == color)
        return;

    frameColor = color;

    XSetForeground (XGCPARAM, getIndexColor (frameColor));
}

//-----------------------------------------------------------------------------
void CDrawContext::setFillColor (const CColor color)
{
    if (fillColor == color)
        return;

    fillColor = color;

    // set the background for the text
    //XSetBackground (XGCPARAM, getIndexColor (fillColor));
    XSetBackground (display, pFrame->getGC(), getIndexColor (fillColor));

    // set the foreground for the fill
    setFrameColor (fillColor);
}

//-----------------------------------------------------------------------------
void CDrawContext::setFont (CFont fontID, const long size, long style)
{
    if (fontID < 0 || fontID >= kNumStandardFonts)
        fontID = kSystemFont;

    if (fontId == fontID && fontSize == (size != 0 ? size : gStandardFontSize[fontID]) && fontStyle == style)
        return;

    fontStyle = style;
    fontId = fontID;
    if (size != 0)
        fontSize = size;
    else
        fontSize = gStandardFontSize[fontID];

	if (gFontStructs[fontID] != NULL)
	    XSetFont (display, pFrame->getGC(), gFontStructs[fontID]->fid);
	else
		fprintf(stderr, "ERROR: Font not defined\n");

    // keep trace of the current font
    pFontInfoStruct = gFontStructs[fontID];

#ifdef DEBUG
//    if (!pFontInfoStruct) assert (false); // fonts have invalid pointers !
#endif
}

//------------------------------------------------------------------------------
CCoord CDrawContext::getStringWidth (const char *pStr)
{
    CCoord result = 0;

    result = (long) XTextWidth (pFontInfoStruct, pStr, strlen (pStr));

    return result;
}

//-----------------------------------------------------------------------------
void CDrawContext::drawString (const char *string, const CRect &_rect,
                               const short opaque, const CHoriTxtAlign hAlign)
{
    if (!string)
        return;

    CRect rect (_rect);
    rect.offset (offset.h, offset.v);

    int width;
    int fontHeight = pFontInfoStruct->ascent + pFontInfoStruct->descent;
    int xPos;
    int yPos;
    int rectHeight = rect.height ();

    if (rectHeight >= fontHeight)
        yPos = rect.bottom - (rectHeight - fontHeight) / 2;
    else
        yPos = rect.bottom;
    yPos -= pFontInfoStruct->descent;

    switch (hAlign)
    {
    case kCenterText:
        width = XTextWidth (pFontInfoStruct, string, strlen (string));
        xPos = (rect.right + rect.left - width) / 2;
        break;

    case kRightText:
        width = XTextWidth (pFontInfoStruct, string, strlen (string));
        xPos = rect.right - width;
        break;

    default: // left adjust
        xPos = rect.left + 1;
    }

    if (opaque)
        XDrawImageString (XDRAWPARAM, xPos, yPos, string, strlen (string));
    else
        XDrawString (XDRAWPARAM, xPos, yPos, string, strlen (string));
}

//-----------------------------------------------------------------------------
long CDrawContext::getMouseButtons ()
{
    long buttons = 0;

    Window root, child;
    int rootX, rootY, childX, childY;
    unsigned int mask;

    XQueryPointer (XWINPARAM,
                   &root,
                   &child,
                   &rootX,
                   &rootY,
                   &childX,
                   &childY,
                   &mask);

    if (mask & Button1Mask)
        buttons |= kLButton;
    if (mask & Button2Mask)
        buttons |= kMButton;
    if (mask & Button3Mask)
        buttons |= kRButton;

    if (mask & ShiftMask)
        buttons |= kShift;
    if (mask & ControlMask)
        buttons |= kControl;
    if (mask & Mod1Mask)
        buttons |= kAlt;

    return buttons;
}

//-----------------------------------------------------------------------------
void CDrawContext::getMouseLocation (CPoint &point)
{
    Window root, child;
    int rootX, rootY, childX, childY;
    unsigned int mask;

    XQueryPointer (XWINPARAM,
                   &root,
                   &child,
                   &rootX,
                   &rootY,
                   &childX,
                   &childY,
                   &mask);

    point (childX, childY);

    point.offset (-offsetScreen.h, -offsetScreen.v);
}

//-----------------------------------------------------------------------------
bool CDrawContext::waitDoubleClick ()
{
    bool doubleClick = false;

    long currentTime = _getTicks ();
    long clickTime = currentTime + 200; // XtGetMultiClickTime (display);

    XEvent e;
    while (currentTime < clickTime)
    {
        if (XCheckTypedEvent (display, ButtonPress, &e))
        {
            doubleClick = true;
            break;
        }

        currentTime = _getTicks ();
    }

    return doubleClick;
}

//-----------------------------------------------------------------------------
bool CDrawContext::waitDrag ()
{
    if (!pFrame)
        return false;

    CPoint mouseLoc;
    getMouseLocation (mouseLoc);
    CRect observe (mouseLoc.h - 2, mouseLoc.v - 2, mouseLoc.h + 2, mouseLoc.v + 2);

    long currentTime = pFrame->getTicks ();
    bool wasOutside = false;

    while (((getMouseButtons () & ~(kMButton|kRButton)) & kLButton) != 0)
    {
        pFrame->doIdleStuff ();
        if (!wasOutside)
        {
            getMouseLocation (mouseLoc);
            if (!observe.pointInside (mouseLoc))
            {
                if (kDragDelay <= 0)
                    return true;
                wasOutside = true;
            }
        }

        if (wasOutside && (pFrame->getTicks () - currentTime > kDragDelay))
            return true;
    }
    return false;
}

//-----------------------------------------------------------------------------
void CDrawContext::forget ()
{
    CReferenceCounter::forget ();
}

//-----------------------------------------------------------------------------
long CDrawContext::getIndexColor (CColor color)
{
    /*XColor xcol;
    xcol.red = color.red << 8;
    xcol.green = color.green << 8;
    xcol.blue = color.blue << 8;
    xcol.flags = (DoRed | DoGreen | DoBlue);
    XAllocColor (display, getColormap(), &xcol);
    return xcol.pixel;*/
	return (color.red << 16) + (color.green << 8) + color.blue;
}

//-----------------------------------------------------------------------------
Colormap CDrawContext::getColormap ()
{
    if (pFrame)
        return pFrame->getColormap ();
    else
        return None;
}

//-----------------------------------------------------------------------------
Visual* CDrawContext::getVisual ()
{
    if (pFrame)
        return pFrame->getVisual ();
    else
        return None;
}

//-----------------------------------------------------------------------------
unsigned int CDrawContext::getDepth ()
{
    if (pFrame)
        return pFrame->getDepth ();
    else
        return None;
}


//-----------------------------------------------------------------------------
// COffscreenContext Implementation
//-----------------------------------------------------------------------------
COffscreenContext::COffscreenContext (CDrawContext *pContext, CBitmap *pBitmapBg, bool drawInBitmap)
: CDrawContext (pContext->pFrame, NULL, NULL)
, pBitmap (0)
, pBitmapBg (pBitmapBg)
, height (20)
, width (20)
{
    std::cout << "COffscreenContext::COffscreenContext with bitmap" << std::endl;

    if (pBitmapBg)
    {
        height = pBitmapBg->getHeight ();
        width  = pBitmapBg->getWidth ();

        clipRect (0, 0, width, height);
    }

#if DEBUG
    gNbCOffscreenContext++;
    gBitmapAllocation += (long)height * (long)width;
#endif

    bDestroyPixmap = false;

//    Window root = RootWindow (display, DefaultScreen (display));

     // if no bitmap handle => create one
    if (! pWindow)
    {
        pWindow = (void*) XCreatePixmap (display, pFrame->getWindow(), width, height, pFrame->getDepth ());
        bDestroyPixmap = true;
    }

    // set the current font
    if (pSystemContext)
        setFont (kNormalFont);

    if (!drawInBitmap)
    {
        // draw bitmap to Offscreen
        CRect r (0, 0, width, height);
        if (pBitmapBg)
            pBitmapBg->draw (this, r);
        else
        {
            setFillColor (kBlackCColor);
            fillRect (r);
        }
    }
}

//-----------------------------------------------------------------------------
COffscreenContext::COffscreenContext (CFrame *pFrame, long width, long height, const CColor backgroundColor)
: CDrawContext (pFrame, NULL, NULL)
, pBitmap (0)
, pBitmapBg (0)
, height (height)
, width (width)
, backgroundColor (backgroundColor)
{
    std::cout << "COffscreenContext::COffscreenContext without bitmap" << std::endl;

    clipRect (0, 0, width, height);

#if DEBUG
    gNbCOffscreenContext++;
    gBitmapAllocation += height * width;
#endif

    bDestroyPixmap = true;

    pWindow = (void*) XCreatePixmap (display,
                                     pFrame->getWindow(),
                                     width,
                                     height,
                                     pFrame->getDepth ());

/*
    // clear the pixmap
    XGCValues values;
    values.foreground = getIndexColor (backgroundColor);
    GC gc = XCreateGC (display, (Window)pWindow, GCForeground, &values);
    XFillRectangle (display, (Window)pWindow, gc, 0, 0, width, height);
    XFreeGC (display, gc);
*/

    XGCValues values;
    values.foreground = getIndexColor (backgroundColor);
    pSystemContext = XCreateGC (display, (Window)pWindow, GCForeground, &values);
    XFillRectangle (display, (Window)pWindow, (GC) pSystemContext, 0, 0, width, height);

    // set the current font
    if (pSystemContext)
        setFont (kNormalFont);
}

//-----------------------------------------------------------------------------
COffscreenContext::~COffscreenContext ()
{
#if DEBUG
    gNbCOffscreenContext--;
    gBitmapAllocation -= (long)height * (long)width;
#endif

    if (pBitmap)
        pBitmap->forget ();

    if (bDestroyPixmap && pWindow)
        XFreePixmap (display, (Pixmap)pWindow);

    if (pSystemContext)
        XFreeGC (display, (GC) pSystemContext);
}

//-----------------------------------------------------------------------------
void COffscreenContext::copyTo (CDrawContext* pContext, CRect& srcRect, CPoint destOffset)
{
    std::cout << "COffscreenContext::copyTo" << std::endl;

    XCopyArea (display,
               (Drawable) pContext->pWindow,
               (Drawable) pWindow,
               (GC) pSystemContext,
               srcRect.left,
               srcRect.top,
               srcRect.width (),
               srcRect.height (),
               destOffset.h,
               destOffset.v);
}

//-----------------------------------------------------------------------------
void COffscreenContext::copyFrom (CDrawContext *pContext, CRect destRect, CPoint srcOffset)
{
    //std::cout << "COffscreenContext::copyFrom ";

    XCopyArea (display,
               (Drawable) pContext->pWindow,
               (Drawable) pWindow,
               (GC) pSystemContext,
               srcOffset.h,
               srcOffset.v,
               destRect.width(),
               destRect.height(),
               destRect.left,
               destRect.top);

    pContext->setFrameColor (kRedCColor);
    pContext->drawRect (destRect);
}


//-----------------------------------------------------------------------------
class CAttributeListEntry
{
public:
    CAttributeListEntry (long size, CViewAttributeID id)
    : nextEntry (0)
    , pointer (0)
    , sizeOfPointer (size)
    , id (id)
    {
        pointer = malloc (size);
    }

    ~CAttributeListEntry ()
    {
        if (pointer)
            free (pointer);
    }

    CViewAttributeID getID () const { return id; }
    long getSize () const { return sizeOfPointer; }
    void* getPointer () const { return pointer; }
    CAttributeListEntry* getNext () const { return nextEntry; }

    void setNext (CAttributeListEntry* entry) { nextEntry = entry; }

protected:
    CAttributeListEntry () : nextEntry (0), pointer (0), sizeOfPointer (0), id (0) {}

    CAttributeListEntry* nextEntry;
    void* pointer;
    long sizeOfPointer;
    CViewAttributeID id;
};

//-----------------------------------------------------------------------------
const char* kMsgCheckIfViewContainer    = "kMsgCheckIfViewContainer";

//-----------------------------------------------------------------------------
// CView
//-----------------------------------------------------------------------------
/*! @class CView
base class of all view objects
*/
//-----------------------------------------------------------------------------
CView::CView (const CRect& size)
: size (size)
, mouseableArea (size)
, pParentFrame (0)
, pParentView (0)
, bDirty (false)
, bMouseEnabled (true)
, bTransparencyEnabled (false)
, bWantsFocus (false)
, bVisible (true)
, pBackground (0)
, pAttributeList (0)
{
#if DEBUG
    gNbCView++;
#endif
}

//-----------------------------------------------------------------------------
CView::~CView ()
{
    if (pBackground)
        pBackground->forget ();

    if (pAttributeList)
    {
        CAttributeListEntry* entry = pAttributeList;
        while (entry)
        {
            CAttributeListEntry* nextEntry = entry->getNext ();
            delete entry;
            entry = nextEntry;
        }
    }
#if DEBUG
    gNbCView--;
#endif
}

//-----------------------------------------------------------------------------
void CView::getMouseLocation (CDrawContext* context, CPoint &point)
{
    if (context)
    {
        if (pParentView && pParentView->notify (this, kMsgCheckIfViewContainer) == kMessageNotified)
        {
            CCoord save[4];
            ((CViewContainer*)pParentView)->modifyDrawContext (save, context);
            pParentView->getMouseLocation (context, point);
            ((CViewContainer*)pParentView)->restoreDrawContext (context, save);
        }
        else
            context->getMouseLocation (point);
    }
}

//-----------------------------------------------------------------------------
CPoint& CView::frameToLocal (CPoint& point) const
{
    if (pParentView && pParentView->isTypeOf ("CViewContainer"))
        return pParentView->frameToLocal (point);
    return point;
}

//-----------------------------------------------------------------------------
CPoint& CView::localToFrame (CPoint& point) const
{
    if (pParentView && pParentView->isTypeOf ("CViewContainer"))
        return pParentView->localToFrame (point);
    return point;
}

//-----------------------------------------------------------------------------
void CView::redraw ()
{
    if (pParentFrame)
        pParentFrame->draw (this);
}

//-----------------------------------------------------------------------------
void CView::redrawRect (CDrawContext* context, const CRect& rect)
{
    if (pParentView)
        pParentView->redrawRect (context, rect);
    else if (pParentFrame)
        pParentFrame->drawRect (context, rect);
}

//-----------------------------------------------------------------------------
void CView::draw (CDrawContext *pContext)
{
    if (pBackground)
    {
        if (bTransparencyEnabled)
            pBackground->drawTransparent (pContext, size);
        else
            pBackground->draw (pContext, size);
    }
    setDirty (false);
}

//-----------------------------------------------------------------------------
void CView::mouse (CDrawContext *pContext, CPoint &where, long buttons)
{}

//-----------------------------------------------------------------------------
bool CView::onWheel (CDrawContext *pContext, const CPoint &where, float distance)
{
    return false;
}

//------------------------------------------------------------------------
bool CView::onWheel (CDrawContext *pContext, const CPoint &where, const CMouseWheelAxis axis, float distance)
{
    return onWheel (pContext, where, distance);
}

//------------------------------------------------------------------------
void CView::update (CDrawContext *pContext)
{
    if (isDirty ())
    {
#if NEW_UPDATE_MECHANISM
        if (pContext)
            redrawRect (pContext, size);
        else
            redraw ();
#else
    #if USE_ALPHA_BLEND
        if (pContext)
        {
            if (bTransparencyEnabled)
                getFrame ()->drawRect (pContext, size);
            else
                draw (pContext);
        }
    #else
        if (pContext)
            draw (pContext);
    #endif
        else
            redraw ();
#endif
        setDirty (false);
    }
}

//------------------------------------------------------------------------------
long CView::onKeyDown (VstKeyCode& keyCode)
{
    return -1;
}

//------------------------------------------------------------------------------
long CView::onKeyUp (VstKeyCode& keyCode)
{
    return -1;
}

//------------------------------------------------------------------------------
long CView::notify (CView* sender, const char* message)
{
    return kMessageUnknown;
}

//------------------------------------------------------------------------------
void CView::looseFocus (CDrawContext *pContext)
{}

//------------------------------------------------------------------------------
void CView::takeFocus (CDrawContext *pContext)
{}

//------------------------------------------------------------------------------
void CView::setViewSize (CRect &rect)
{
    size = rect;
    setDirty ();
}

//-----------------------------------------------------------------------------
void *CView::getEditor () const
{
    return pParentFrame ? pParentFrame->getEditor () : 0;
}

//-----------------------------------------------------------------------------
void CView::setBackground (CBitmap *background)
{
    if (pBackground)
        pBackground->forget ();
    pBackground = background;
    if (pBackground)
        pBackground->remember ();
    setDirty (true);
}

//-----------------------------------------------------------------------------
const CViewAttributeID kCViewAttributeReferencePointer = (CViewAttributeID) "cvrp";

//-----------------------------------------------------------------------------
/**
 * @param id the ID of the Attribute
 * @param outSize on return the size of the attribute
 */
bool CView::getAttributeSize (const CViewAttributeID id, long& outSize) const
{
    if (pAttributeList)
    {
        CAttributeListEntry* entry = pAttributeList;
        while (entry)
        {
            if (entry->getID () == id)
                break;
            entry = entry->getNext ();
        }
        if (entry)
        {
            outSize = entry->getSize ();
            return true;
        }
    }
    return false;
}

//-----------------------------------------------------------------------------
/**
 * @param id the ID of the Attribute
 * @param inSize the size of the outData pointer
 * @param outData a pointer where to copy the attribute data
 * @param outSize the size in bytes which was copied into outData
 */
bool CView::getAttribute (const CViewAttributeID id, const long inSize, void* outData, long& outSize) const
{
    if (pAttributeList)
    {
        CAttributeListEntry* entry = pAttributeList;
        while (entry)
        {
            if (entry->getID () == id)
                break;
            entry = entry->getNext ();
        }
        if (entry && inSize >= entry->getSize ())
        {
            outSize = entry->getSize ();
            memcpy (outData, entry->getPointer (), outSize);
            return true;
        }
    }
    return false;
}

//-----------------------------------------------------------------------------
/**
 * copies data into the attribute. If it does not exist, creates a new attribute.
 * @param id the ID of the Attribute
 * @param inSize the size of the outData pointer
 * @param inData a pointer to the data
 */
bool CView::setAttribute (const CViewAttributeID id, const long inSize, void* inData)
{
    CAttributeListEntry* lastEntry = 0;
    if (pAttributeList)
    {
        CAttributeListEntry* entry = pAttributeList;
        while (entry)
        {
            if (entry->getID () == id)
                break;
            if (entry->getNext () == 0)
                lastEntry = entry;
            entry = entry->getNext ();
        }
        if (entry)
        {
            if (entry->getSize () >= inSize)
            {
                memcpy (entry->getPointer (), inData, inSize);
                return true;
            }
            else
                return false;
        }
    }

    // create a new attribute
    CAttributeListEntry* newEntry = new CAttributeListEntry (inSize, id);
    memcpy (newEntry->getPointer (), inData, inSize);
    if (lastEntry)
        lastEntry->setNext (newEntry);
    else if (!pAttributeList)
        pAttributeList = newEntry;
    else
    {
        delete newEntry;
        return false;
    }
    return true;
}

#if DEBUG
//-----------------------------------------------------------------------------
void CView::dumpInfo ()
{
    CRect viewRect = getViewSize (viewRect);
    DebugPrint ("left:%4d, top:%4d, width:%4d, height:%4d ", viewRect.left, viewRect.top, viewRect.getWidth (), viewRect.getHeight ());
    if (getMouseEnabled ())
        DebugPrint ("(Mouse Enabled) ");
    if (getTransparency ())
        DebugPrint ("(Transparent) ");
    CRect mouseRect = getMouseableArea (mouseRect);
    if (mouseRect != viewRect)
        DebugPrint (" (Mouseable Area: left:%4d, top:%4d, width:%4d, height:%4d ", mouseRect.left, mouseRect.top, mouseRect.getWidth (), mouseRect.getHeight ());
}
#endif

#define FOREACHSUBVIEW for (CCView *pSv = pFirstView; pSv; pSv = pSv->pNext) {CView *pV = pSv->pView;
#define FOREACHSUBVIEW_REVERSE(reverse) for (CCView *pSv = reverse ? pLastView : pFirstView; pSv; pSv = reverse ? pSv->pPrevious : pSv->pNext) {CView *pV = pSv->pView;
#define ENDFOR }

//-----------------------------------------------------------------------------
// CFrame Implementation
//-----------------------------------------------------------------------------
/*! @class CFrame
It creates a platform dependend view object.
On classic Mac OS it just draws into the provided window.
On Mac OS X it is a ControlRef.
On Windows it's a WS_CHILD Window.
*/
CFrame::CFrame (const CRect &inSize, void *inSystemWindow, void *inEditor)
: CViewContainer (inSize, 0, 0)
, pEditor (inEditor)
, pModalView (0)
, pFocusView (0)
, bFirstDraw (true)
, bDropActive (false)
, bUpdatesDisabled (false)
, pSystemWindow ((Window)inSystemWindow)
, pFrameContext (0)
, bAddedWindow (false)
, defaultCursor (0)
{
    setOpenFlag (true);

    pParentFrame = this;

    depth    = 0;
    pVisual  = 0;
    window   = 0;
	gc       = 0;

	if (display == NULL)
		display = XOpenDisplay(NULL);

	initFrame ((void*)pSystemWindow);
	backBuffer = XdbeAllocateBackBufferName(display, (Window)window, XdbeUndefined);

	XGCValues values;
	values.foreground = 1;
	gc = XCreateGC (display, (Window)backBuffer, GCForeground, &values);

    pFrameContext = new CDrawContext (this, gc, (void*)backBuffer);
}

//-----------------------------------------------------------------------------
CFrame::~CFrame ()
{
    if (pModalView)
        removeView (pModalView, false);

    setCursor (kCursorDefault);

    setDropActive (false);

    if (pFrameContext)
        pFrameContext->forget ();

    if (getOpenFlag ())
        close ();

    if (window)
        XDestroyWindow (display, (Window) window);
    window = 0;

    // remove callbacks to avoid undesirable update
    if (gc)
        freeGc ();
}

//-----------------------------------------------------------------------------
bool CFrame::open ()
{
    if (! window)
        return false;

    XMapRaised (display, window);

    return getOpenFlag ();
}

//-----------------------------------------------------------------------------
bool CFrame::close ()
{
    if (!window || !getOpenFlag () || !pSystemWindow)
        return false;

    XUnmapWindow (display, window);

    return true;
}

//-----------------------------------------------------------------------------
bool xerror;
int errorHandler (Display *dp, XErrorEvent *e)
{
    xerror = true;
	return 0;
}
int getProperty (Window handle, Atom atom)
{
    int result = 0, userSize;
    unsigned long bytes, userCount;
    unsigned char *data;
    Atom userType;
    xerror = false;
    XErrorHandler olderrorhandler = XSetErrorHandler (errorHandler);
    XGetWindowProperty (display, handle, atom, 0, 1, false, AnyPropertyType,
                        &userType,  &userSize, &userCount, &bytes, &data);
    if (xerror == false && userCount == 1)
        result = *(int*)data;
    XSetErrorHandler (olderrorhandler);
    return result;
}

void eventProc (XEvent* ev)
{
    CFrame* frame = (CFrame*) getProperty (ev->xany.window, XInternAtom (display, "_this", false));
    if (frame == 0)
        return;

    switch (ev->type)
    {
        case ButtonPress:
        {
            CPoint where (ev->xbutton.x, ev->xbutton.y);
            frame->mouse (frame->createDrawContext(), where);
            break;
        }

        case MotionNotify:
        {
            CPoint where (ev->xbutton.x, ev->xbutton.y);
            frame->mouse (frame->createDrawContext(), where);
            break;
        }

        case ButtonRelease:
        {
            break;
        }

        case Expose:
        {
            CRect rc (ev->xexpose.x, ev->xexpose.y,
                      ev->xexpose.x + ev->xexpose.width, ev->xexpose.y + ev->xexpose.height);

            while (XCheckTypedWindowEvent (display, ev->xexpose.window, Expose, ev))
            {
                rc.left = std::min ((int) rc.left, ev->xexpose.x);
                rc.top = std::min ((int) rc.top, ev->xexpose.y);
                rc.right = std::max ((int) rc.right, ev->xexpose.x + ev->xexpose.width);
                rc.bottom = std::max ((int) rc.bottom, ev->xexpose.y + ev->xexpose.height);
            }

            frame->drawRect (0, rc);
            break;
        }

        case EnterNotify:
            break;

        case LeaveNotify:
        {
            XCrossingEvent *xevent = (XCrossingEvent*) ev;
            if (frame->getFocusView ())
            {
                if (xevent->x < 0 || xevent->x >= frame->getWidth ()
                    || xevent->y < 0 || xevent->y >= frame->getHeight ())
                {
                    // if button pressed => don't defocus
                    if (xevent->state & (Button1Mask | Button2Mask | Button3Mask))
                        break;

                    frame->getFocusView ()->looseFocus ();
                    frame->setFocusView (0);
                }
            }
            break;
        }

        case ConfigureNotify:
        {
            frame->draw (); // @XXX - keep out ?
            break;
        }
    }
}

//-----------------------------------------------------------------------------
bool CFrame::initFrame (void *systemWin)
{
    if (!systemWin)
        return false;

    // window attributes
    XSetWindowAttributes swa;
    swa.override_redirect = false;
    swa.background_pixmap = None;
    swa.colormap = 0;
    swa.event_mask =
        StructureNotifyMask | ExposureMask | KeyPressMask | KeyReleaseMask |
        ButtonPressMask | ButtonReleaseMask | FocusChangeMask | PointerMotionMask |
        EnterWindowMask | LeaveWindowMask | PropertyChangeMask;

	// create child window of host supplied window
	window = XCreateWindow (display, (Window)systemWin,
                            0, 0, size.width(), size.height(),
                            0, CopyFromParent, InputOutput, (Visual*) CopyFromParent,
                            CWEventMask | CWOverrideRedirect | CWColormap | CWBackPixmap | CWEventMask, &swa);

    XGrabButton (display, AnyButton, AnyModifier, window, False,
                    ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask,
                    GrabModeAsync, GrabModeAsync, None, None);

#if 0
    // remove window caption/frame
    #define MWM_HINTS_DECORATIONS (1L << 1)
    #define PROP_MOTIF_WM_HINTS_ELEMENTS 5
    typedef struct
    {
        unsigned long flags;
        unsigned long functions;
        unsigned long decorations;
        long          inputMode;
        unsigned long status;
    }
    PropMotifWmHints;

    PropMotifWmHints motif_hints;
    motif_hints.flags = MWM_HINTS_DECORATIONS;
    motif_hints.decorations = 0;
    Atom prop = XInternAtom (display, "_MOTIF_WM_HINTS", True );
    XChangeProperty (display, window, prop, prop, 32, PropModeReplace,
                     (unsigned char *) &motif_hints, PROP_MOTIF_WM_HINTS_ELEMENTS);
#endif

    Atom atom;
    void* data = this;
    atom = XInternAtom (display, "_this", false);
    XChangeProperty (display, (Window)window, atom, atom, 32,
                     PropModeReplace, (unsigned char*)&data, 1);

    data = (void*)&eventProc;
    atom = XInternAtom (display, "_XEventProc", false);
    XChangeProperty (display, (Window)window, atom, atom, 32,
                     PropModeReplace, (unsigned char*)&data, 1);

    XGCValues values;
    values.foreground = 1;
    gc = XCreateGC (display, (Window)window, GCForeground, &values);

    // get the std colormap
    XWindowAttributes attr;
    XGetWindowAttributes (display, (Window) window, &attr);
    colormap = attr.colormap;
    pVisual  = attr.visual;
    depth    = attr.depth;

    // init and load the fonts
    if (! gFontInit) {
        for (long i = 0; i < kNumStandardFonts; i++) {
            DBG (gFontTable[i].string);
            gFontStructs[i] = XLoadQueryFont (display, gFontTable[i].string);
            assert (gFontStructs[i] != 0);
        }
        gFontInit = true;
    }

    setDropActive (true);
    bAddedWindow = true;

    //XReparentWindow (display, window, (Window) systemWin, 0, 0);
    //XMapRaised (display, window);

    return true;
}

//-----------------------------------------------------------------------------
bool CFrame::setDropActive (bool val)
{
    if (!bDropActive && !val)
        return true;

    bDropActive = val;
    return true;
}

//-----------------------------------------------------------------------------
void CFrame::freeGc ()
{
	XFreeGC (display, gc);
}

//-----------------------------------------------------------------------------
CDrawContext* CFrame::createDrawContext ()
{
    if (pFrameContext)
    {
        pFrameContext->remember ();
        return pFrameContext;
    }

    pFrameContext = new CDrawContext (this, gc, (void*)window);

    return pFrameContext;
}

//-----------------------------------------------------------------------------
void CFrame::draw (CDrawContext *pContext)
{
    if (bFirstDraw)
        bFirstDraw = false;

    bool localContext = false;
    if (! pContext)
    {
        localContext = true;
        pContext = createDrawContext ();
    }

    // draw the background and the children
    CViewContainer::draw (pContext);

    if (localContext)
        pContext->forget ();
}

//-----------------------------------------------------------------------------
void CFrame::drawRect (CDrawContext *pContext, const CRect& updateRect)
{
    if (bFirstDraw)
        bFirstDraw = false;

    bool localContext = false;
    if (! pContext)
    {
        localContext = true;
        pContext = createDrawContext ();
    }

#if USE_CLIPPING_DRAWRECT
    CRect oldClip;
    pContext->getClipRect (oldClip);
    CRect newClip (updateRect);
    newClip.bound (oldClip);
    pContext->setClipRect (newClip);
#endif

    // draw the background and the children
    if (updateRect.getWidth () > 0 && updateRect.getHeight () > 0)
        CViewContainer::drawRect (pContext, updateRect);

#if USE_CLIPPING_DRAWRECT
    pContext->setClipRect (oldClip);
#endif

    if (localContext)
        pContext->forget ();
}

//-----------------------------------------------------------------------------
void CFrame::draw (CView *pView)
{
    CView *pViewToDraw = 0;

        // Search it in the view list
    if (pView && isChild(pView))
        pViewToDraw = pView;

    CDrawContext *pContext = createDrawContext ();
    if (pContext)
    {
        if (pViewToDraw && pViewToDraw->isVisible())
            pViewToDraw->draw (pContext);
        else
            draw (pContext);

        pContext->forget ();
    }
}

//-----------------------------------------------------------------------------
void CFrame::mouse (CDrawContext *pContext, CPoint &where, long buttons)
{
/*
    XGrabPointer (display,
                  window,
                  False,
                  ButtonPressMask | ButtonReleaseMask |
                  EnterWindowMask | LeaveWindowMask |
                  PointerMotionMask | Button1MotionMask |
                  Button2MotionMask | Button3MotionMask |
                  Button4MotionMask | Button5MotionMask,
                  GrabModeAsync,
                  GrabModeAsync,
                  None,
                  None,
                  CurrentTime);
*/

    if (!pContext)
        pContext = pFrameContext;

    if (pFocusView)
        setFocusView (NULL);

    if (buttons == -1 && pContext)
        buttons = pContext->getMouseButtons ();

    if (pModalView && pModalView->isVisible())
    {
        if (pModalView->hitTest (where, buttons))
            pModalView->mouse (pContext, where, buttons);
    }
    else
    {
        CViewContainer::mouse (pContext, where, buttons);
    }

//    XUngrabPointer (display, CurrentTime);
}

//-----------------------------------------------------------------------------
long CFrame::onKeyDown (VstKeyCode& keyCode)
{
    long result = -1;

    if (pFocusView && pFocusView->isVisible())
        result = pFocusView->onKeyDown (keyCode);

    if (result == -1 && pModalView && pModalView->isVisible())
        result = pModalView->onKeyDown (keyCode);

    if (result == -1 && keyCode.virt == VKEY_TAB)
        result = advanceNextFocusView (pFocusView, (keyCode.modifier & MODIFIER_SHIFT) ? true : false) ? 1 : -1;

    return result;
}

//-----------------------------------------------------------------------------
long CFrame::onKeyUp (VstKeyCode& keyCode)
{
    long result = -1;

    if (pFocusView && pFocusView->isVisible())
        result = pFocusView->onKeyUp (keyCode);

    if (result == -1 && pModalView && pModalView->isVisible())
        result = pModalView->onKeyUp (keyCode);

    return result;
}

//------------------------------------------------------------------------
bool CFrame::onWheel (CDrawContext *pContext, const CPoint &where, const CMouseWheelAxis axis, float distance)
{
    bool result = false;

    CView *view = pModalView ? pModalView : getViewAt (where);
    if (view && view->isVisible())
    {
        bool localContext = false;
        if (!pContext)
        {
            localContext = true;
            pContext = createDrawContext ();
        }

        result = view->onWheel (pContext, where, axis, distance);

        if (localContext)
            pContext->forget ();
    }
    return result;
}

//-----------------------------------------------------------------------------
bool CFrame::onWheel (CDrawContext *pContext, const CPoint &where, float distance)
{
    return onWheel (pContext, where, kMouseWheelAxisY, distance);
}

//-----------------------------------------------------------------------------
void CFrame::update (CDrawContext *pContext)
{
    if (!getOpenFlag () || updatesDisabled ())
        return;

    CDrawContext* dc = pContext;

    if (bDirty)
    {
        draw (dc);
        setDirty (false);
    }
    else
    {
#if USE_CLIPPING_DRAWRECT
        CRect oldClipRect;
        dc->getClipRect (oldClipRect);
#endif
#if NEW_UPDATE_MECHANISM
        if (pModalView && pModalView->isVisible () && pModalView->isDirty ())
            pModalView->update (dc);
#endif
        FOREACHSUBVIEW
#if USE_CLIPPING_DRAWRECT
            CRect viewSize (pV->size);
            viewSize.bound (oldClipRect);
            dc->setClipRect (viewSize);
#endif
            pV->update (dc);
        ENDFOR
#if USE_CLIPPING_DRAWRECT
        dc->setClipRect (oldClipRect);
#endif
    }
}

//-----------------------------------------------------------------------------
void CFrame::idle ()
{
    if (!getOpenFlag ())
        return;

    // don't do an idle before a draw
    if (bFirstDraw)
        return;

    if (!isDirty ())
        return;

	XdbeBeginIdiom(display);
	XdbeSwapInfo swap_info;
	swap_info.swap_window = window;
	swap_info.swap_action = XdbeUndefined;
	XdbeSwapBuffers(display, &swap_info, 1);

    CDrawContext *pContext = createDrawContext ();

    update (pContext);

    pContext->forget ();

	XdbeEndIdiom(display);
}

//-----------------------------------------------------------------------------
void CFrame::doIdleStuff ()
{
    if (pEditor)
        ((AEffGUIEditor*)pEditor)->doIdleStuff ();
}

//-----------------------------------------------------------------------------
unsigned long CFrame::getTicks () const
{
    if (pEditor)
        return ((AEffGUIEditor*)pEditor)->getTicks ();
    return 0;
}

//-----------------------------------------------------------------------------
long CFrame::getKnobMode () const
{
    return AEffGUIEditor::getKnobMode ();
}

//-----------------------------------------------------------------------------
bool CFrame::setPosition (CCoord x, CCoord y)
{
    size.left = 0;
    size.top = 0;

    XWindowChanges attr;
    attr.x = x;
    attr.y = y;

    XConfigureWindow (display, window, CWX | CWY, &attr);

    return false;
}

//-----------------------------------------------------------------------------
bool CFrame::getPosition (CCoord &x, CCoord &y) const
{
    x = size.left;
    y = size.top;
    return true;
}

//-----------------------------------------------------------------------------
void CFrame::setViewSize (CRect& inRect)
{
    setSize (inRect.width (), inRect.height ());
}

//-----------------------------------------------------------------------------
bool CFrame::setSize (CCoord width, CCoord height)
{
    if ((width == size.width ()) && (height == size.height ()))
        return false;

    // set the new size
    size.right  = size.left + width;
    size.bottom = size.top  + height;

    XResizeWindow (display, window, size.width (), size.height ());

    CRect myViewSize (0, 0, size.width (), size.height ());
    CViewContainer::setViewSize (myViewSize);

    return true;
}

//-----------------------------------------------------------------------------
bool CFrame::getSize (CRect *pRect) const
{
//    if (!getOpenFlag ())
//        return false;

    pRect->left   = 0;
    pRect->top    = 0;
    pRect->right  = size.width () + pRect->left;
    pRect->bottom = size.height () + pRect->top;

    return true;
}

//-----------------------------------------------------------------------------
bool CFrame::getSize (CRect& outSize) const
{
    return getSize (&outSize);
}

//-----------------------------------------------------------------------------
long CFrame::setModalView (CView *pView)
{
    // There's already a modal view so we get out
    if (pView && pModalView)
        return 0;

    if (pModalView)
        removeView (pModalView, false);

    pModalView = pView;
    if (pModalView)
        addView (pModalView);

    return 1;
}

//-----------------------------------------------------------------------------
void CFrame::beginEdit (long index)
{
    if (pEditor)
        ((AEffGUIEditor*)pEditor)->beginEdit (index);
}

//-----------------------------------------------------------------------------
void CFrame::endEdit (long index)
{
    if (pEditor)
        ((AEffGUIEditor*)pEditor)->endEdit (index);
}

//-----------------------------------------------------------------------------
CView *CFrame::getCurrentView () const
{
    if (pModalView)
        return pModalView;

    return CViewContainer::getCurrentView ();
}

//-----------------------------------------------------------------------------
bool CFrame::getCurrentLocation (CPoint &where)
{
    // create a local context
    CDrawContext *pContext = createDrawContext ();
    if (pContext)
    {
    // get the current position
        pContext->getMouseLocation (where);
        pContext->forget ();
    }
    return true;
}

//-----------------------------------------------------------------------------
void CFrame::setCursor (CCursorType type)
{
}

//-----------------------------------------------------------------------------
void CFrame::setFocusView (CView *pView)
{
    if (pView && ! pView->isVisible())
        return;

    CView *pOldFocusView = pFocusView;
    pFocusView = pView;

    if (pFocusView && pFocusView->wantsFocus ())
        pFocusView->setDirty ();

    if (pOldFocusView)
    {
        pOldFocusView->looseFocus ();
        if (pOldFocusView->wantsFocus ())
            pOldFocusView->setDirty ();
    }
}

//-----------------------------------------------------------------------------
bool CFrame::advanceNextFocusView (CView* oldFocus, bool reverse)
{
    if (pModalView)
        return false; // currently not supported, but should be done sometime
    if (oldFocus == 0)
    {
        if (pFocusView == 0)
            return CViewContainer::advanceNextFocusView (0, reverse);
        oldFocus = pFocusView;
    }
    if (isChild (oldFocus))
    {
        if (CViewContainer::advanceNextFocusView (oldFocus, reverse))
            return true;
        else
        {
            setFocusView (NULL);
            return false;
        }
    }
    CView* parentView = oldFocus->getParentView ();
    if (parentView && parentView->isTypeOf ("CViewContainer"))
    {
        CView* tempOldFocus = oldFocus;
        CViewContainer* vc = (CViewContainer*)parentView;
        while (vc)
        {
            if (vc->advanceNextFocusView (tempOldFocus, reverse))
                return true;
            else
            {
                tempOldFocus = vc;
                if (vc->getParentView () && vc->getParentView ()->isTypeOf ("CViewContainer"))
                    vc = (CViewContainer*)vc->getParentView ();
                else
                    vc = 0;
            }
        }
    }
    return CViewContainer::advanceNextFocusView (oldFocus, reverse);
}

//-----------------------------------------------------------------------------
void CFrame::invalidate (const CRect &rect)
{
    CRect rectView;
    FOREACHSUBVIEW
    if (pV)
    {
        pV->getViewSize (rectView);
        if (rect.rectOverlap (rectView))
            pV->setDirty (true);
    }
    ENDFOR

    XClearArea (display,
                window,
                rect.left,
                rect.top,
                rect.right - rect.left,
                rect.bottom - rect.top,
                true);

    XSync (display, false);

/*
    XEvent ev;
    memset (&ev, 0, sizeof (XEvent));
    ev.xexpose.type = Expose;
    ev.xexpose.display = display;
    ev.xexpose.window = (Window) window;

    ev.xexpose.x = rect.left;
    ev.xexpose.y = rect.top;
    ev.xexpose.width = rect.right - rect.left;
    ev.xexpose.height = rect.bottom - rect.top;

    XSendEvent (display, (Window) window, False, 0L, &ev);
    XFlush (display);
*/
}

#if DEBUG
//-----------------------------------------------------------------------------
void CFrame::dumpHierarchy ()
{
    dumpInfo ();
    DebugPrint ("\n");
    CViewContainer::dumpHierarchy ();
}
#endif

//-----------------------------------------------------------------------------
// CCView Implementation
//-----------------------------------------------------------------------------
CCView::CCView (CView *pView)
 :  pView (pView), pNext (0), pPrevious (0)
{
    if (pView)
        pView->remember ();
}

//-----------------------------------------------------------------------------
CCView::~CCView ()
{
    if (pView)
        pView->forget ();
}

//-----------------------------------------------------------------------------
// CViewContainer Implementation
//-----------------------------------------------------------------------------
/**
 * CViewContainer constructor.
 * @param rect the size of the container
 * @param pParent the parent CFrame
 * @param pBackground the background bitmap, can be NULL
 */
CViewContainer::CViewContainer (const CRect &rect, CFrame *pParent, CBitmap *pBackground)
  : CView (rect),
    pFirstView (0),
    pLastView (0),
    mode (kNormalUpdate),
    pOffscreenContext (0),
    bDrawInOffscreen (false),
    currentDragView (0)
{
    pParentFrame = pParent;

    backgroundOffset (0, 0);

    setBackground (pBackground);
    backgroundColor = kBlackCColor;

#if NEW_UPDATE_MECHANISM
    mode = kOnlyDirtyUpdate;
#endif
}

//-----------------------------------------------------------------------------
CViewContainer::~CViewContainer ()
{
    // remove all views
    removeAll (true);

     if (pOffscreenContext)
        pOffscreenContext->forget ();
    pOffscreenContext = 0;
}

//-----------------------------------------------------------------------------
/**
 * @param rect the new size of the container
 */
void CViewContainer::setViewSize (CRect &rect)
{
    CView::setViewSize (rect);

    if (pOffscreenContext && bDrawInOffscreen)
    {
        pOffscreenContext->forget ();
        pOffscreenContext = new COffscreenContext (pParentFrame, (long)size.width (), (long)size.height (), kBlackCColor);
    }
}

//-----------------------------------------------------------------------------
/**
 * @param color the new background color of the container
 */
void CViewContainer::setBackgroundColor (CColor color)
{
    backgroundColor = color;
    setDirty (true);
}

//------------------------------------------------------------------------------
long CViewContainer::notify (CView* sender, const char* message)
{
    if (message == kMsgCheckIfViewContainer)
        return kMessageNotified;
    return kMessageUnknown;
}

//-----------------------------------------------------------------------------
/**
 * @param pView the view object to add to this container
 */
void CViewContainer::addView (CView *pView)
{
    if (!pView)
        return;

    CCView *pSv = new CCView (pView);

    pView->pParentFrame = pParentFrame;
    pView->pParentView = this;

    CCView *pV = pFirstView;
    if (!pV)
    {
        pLastView = pFirstView = pSv;
    }
    else
    {
        while (pV->pNext)
            pV = pV->pNext;
        pV->pNext = pSv;
        pSv->pPrevious = pV;
        pLastView = pSv;
    }
    pView->attached (this);
    pView->setDirty ();
}

//-----------------------------------------------------------------------------
/**
 * @param pView the view object to add to this container
 * @param mouseableArea the view area in where the view will get mouse events
 * @param mouseEnabled bool to set if view will get mouse events
 */
void CViewContainer::addView (CView *pView, CRect &mouseableArea, bool mouseEnabled)
{
    if (!pView)
        return;

    pView->setMouseEnabled (mouseEnabled);
    pView->setMouseableArea (mouseableArea);

    addView (pView);
}

//-----------------------------------------------------------------------------
/**
 * @param withForget bool to indicate if the view's reference counter should be decreased after removed from the container
 */
void CViewContainer::removeAll (const bool &withForget)
{
    CCView *pV = pFirstView;
    while (pV)
    {
        CCView *pNext = pV->pNext;
        if (pV->pView)
        {
            pV->pView->removed (this);
            if (withForget)
                pV->pView->forget ();
        }

        delete pV;

        pV = pNext;
    }
    pFirstView = 0;
    pLastView = 0;
}

//-----------------------------------------------------------------------------
/**
 * @param pView the view which should be removed from the container
 * @param withForget bool to indicate if the view's reference counter should be decreased after removed from the container
 */
void CViewContainer::removeView (CView *pView, const bool &withForget)
{
    if (pParentFrame && pParentFrame->getFocusView () == pView)
        pParentFrame->setFocusView (0);
    CCView *pV = pFirstView;
    while (pV)
    {
        if (pView == pV->pView)
        {
            CCView *pNext = pV->pNext;
            CCView *pPrevious = pV->pPrevious;
            if (pV->pView)
            {
                pV->pView->removed (this);
                if (withForget)
                    pV->pView->forget ();
            }
            delete pV;
            if (pPrevious)
            {
                pPrevious->pNext = pNext;
                if (pNext)
                    pNext->pPrevious = pPrevious;
                else
                    pLastView = pPrevious;
            }
            else
            {
                pFirstView = pNext;
                if (pNext)
                    pNext->pPrevious = 0;
                else
                    pLastView = 0;
            }
            break;
        }
        else
            pV = pV->pNext;
    }
}

//-----------------------------------------------------------------------------
/**
 * @param pView the view which should be checked if it is a child of this container
 */
bool CViewContainer::isChild (CView *pView) const
{
    bool found = false;

    CCView *pV = pFirstView;
    while (pV)
    {
        if (pView == pV->pView)
        {
            found = true;
            break;
        }
        pV = pV->pNext;
    }
    return found;
}

//-----------------------------------------------------------------------------
long CViewContainer::getNbViews () const
{
    long nb = 0;
    CCView *pV = pFirstView;
    while (pV)
    {
        pV = pV->pNext;
        nb++;
    }
    return nb;
}

//-----------------------------------------------------------------------------
/**
 * @param index the index of the view to return
 */
CView *CViewContainer::getView (long index) const
{
    long nb = 0;
    CCView *pV = pFirstView;
    while (pV)
    {
        if (nb == index)
            return pV->pView;
        pV = pV->pNext;
        nb++;
    }
    return 0;
}

//-----------------------------------------------------------------------------
/**
 * @param pContext the context which to use to draw this container and its subviews
 */
void CViewContainer::draw (CDrawContext *pContext)
{
    CDrawContext *pC;
    CCoord save[4];

    if (!pOffscreenContext && bDrawInOffscreen)
        pOffscreenContext = new COffscreenContext (pParentFrame, (long)size.width (), (long)size.height (), kBlackCColor);

#if USE_ALPHA_BLEND
    if (pOffscreenContext && bTransparencyEnabled)
        pOffscreenContext->copyTo (pContext, size);
#endif

    if (bDrawInOffscreen)
        pC = pOffscreenContext;
    else
    {
        pC = pContext;
        modifyDrawContext (save, pContext);
    }

    CRect r (0, 0, size.width (), size.height ());

#if USE_CLIPPING_DRAWRECT
    CRect oldClip;
    pContext->getClipRect (oldClip);
    CRect oldClip2 (oldClip);
    if (bDrawInOffscreen && getFrame () != this)
        oldClip.offset (-oldClip.left, -oldClip.top);

    CRect newClip (r);
    newClip.bound (oldClip);
    pC->setClipRect (newClip);
#endif

    // draw the background
    if (pBackground)
    {
        if (bTransparencyEnabled)
            pBackground->drawTransparent (pC, r, backgroundOffset);
        else
            pBackground->draw (pC, r, backgroundOffset);
    }
    else if (!bTransparencyEnabled)
    {
        pC->setFillColor (backgroundColor);
        pC->fillRect (r);
    }

    // draw each view
    FOREACHSUBVIEW
#if USE_CLIPPING_DRAWRECT
        CRect vSize (pV->size);
        vSize.bound (oldClip);
        pC->setClipRect (vSize);
#endif
        if (pV->isVisible())
            pV->draw (pC);
    ENDFOR

#if USE_CLIPPING_DRAWRECT
    pC->setClipRect (oldClip2);
#endif

    // transfert offscreen
    if (bDrawInOffscreen)
        ((COffscreenContext*)pC)->copyFrom (pContext, size);
    else
        restoreDrawContext (pContext, save);

    setDirty (false);
}

//-----------------------------------------------------------------------------
/**
 * @param pContext the context which to use to draw the background
 * @param _updateRect the area which to draw
 */
void CViewContainer::drawBackgroundRect (CDrawContext *pContext, CRect& _updateRect)
{
    if (pBackground)
    {
        CRect oldClip;
        pContext->getClipRect (oldClip);
        CRect newClip (_updateRect);
        newClip.bound (oldClip);
        pContext->setClipRect (newClip);
        CRect tr (0, 0, pBackground->getWidth (), pBackground->getHeight ());
        if (bTransparencyEnabled)
            pBackground->drawTransparent (pContext, tr, backgroundOffset);
        else
            pBackground->draw (pContext, tr, backgroundOffset);
        pContext->setClipRect (oldClip);
    }
    else if (!bTransparencyEnabled)
    {
        pContext->setFillColor (backgroundColor);
        pContext->fillRect (_updateRect);
    }
}

//-----------------------------------------------------------------------------
/**
 * @param pContext the context which to use to draw
 * @param _updateRect the area which to draw
 */
void CViewContainer::drawRect (CDrawContext *pContext, const CRect& _updateRect)
{
    CDrawContext *pC;
    CCoord save[4];

    if (!pOffscreenContext && bDrawInOffscreen)
        pOffscreenContext = new COffscreenContext (pParentFrame, (long)size.width (), (long)size.height (), kBlackCColor);

#if USE_ALPHA_BLEND
    if (pOffscreenContext && bTransparencyEnabled)
        pOffscreenContext->copyTo (pContext, size);
#endif

    if (bDrawInOffscreen)
        pC = pOffscreenContext;
    else
    {
        pC = pContext;
        modifyDrawContext (save, pContext);
    }

    CRect updateRect (_updateRect);
    updateRect.bound (size);

    CRect clientRect (updateRect);
    clientRect.offset (-size.left, -size.top);

#if USE_CLIPPING_DRAWRECT
    CRect oldClip;
    pContext->getClipRect (oldClip);
    CRect oldClip2 (oldClip);
    if (bDrawInOffscreen && getFrame () != this)
        oldClip.offset (-oldClip.left, -oldClip.top);

    CRect newClip (clientRect);
    newClip.bound (oldClip);
    pC->setClipRect (newClip);
#endif

    // draw the background
    drawBackgroundRect (pC, clientRect);

    // draw each view
    FOREACHSUBVIEW
        if (pV->isVisible() && pV->checkUpdate (clientRect))
        {
#if USE_CLIPPING_DRAWRECT
            CRect viewSize (pV->size);
            viewSize.bound (newClip);
            if (viewSize.getWidth () == 0 || viewSize.getHeight () == 0)
                continue;
            pC->setClipRect (viewSize);
#endif

            bool wasDirty = pV->isDirty ();
            pV->drawRect (pC, clientRect);

#if DEBUG_FOCUS_DRAWING
            if (getFrame ()->getFocusView() == pV && pV->wantsFocus ())
            {
                pC->setDrawMode (kCopyMode);
                pC->setFrameColor (kRedCColor);
                pC->drawRect (pV->size);
            }
#endif
            if (wasDirty && /* pV->size != viewSize &&*/ !isTypeOf ("CScrollContainer"))
            {
                pV->setDirty (true);
            }
        }
    ENDFOR

#if USE_CLIPPING_DRAWRECT
    pC->setClipRect (oldClip2);
#endif

    // transfer offscreen
    if (bDrawInOffscreen)
        ((COffscreenContext*)pC)->copyFrom (pContext, updateRect, CPoint (clientRect.left, clientRect.top));
    else
        restoreDrawContext (pContext, save);

#if EVENT_DRAW_FIX
    if (bDirty && newClip == size)
#endif
        setDirty (false);
}

//-----------------------------------------------------------------------------
/**
 * @param context the context which to use to redraw this container
 * @param rect the area which to redraw
 */
void CViewContainer::redrawRect (CDrawContext* context, const CRect& rect)
{
    CRect _rect (rect);
    _rect.offset (size.left, size.top);
    if (bTransparencyEnabled)
    {
        // as this is transparent, we call the parentview to redraw this area.
        if (pParentView)
            pParentView->redrawRect (context, _rect);
        else if (pParentFrame)
            pParentFrame->drawRect (context, _rect);
    }
    else
    {
        CCoord save[4];
        if (pParentView)
        {
            CPoint off;
            pParentView->localToFrame (off);
            // store
            save[0] = context->offsetScreen.h;
            save[1] = context->offsetScreen.v;
            save[2] = context->offset.h;
            save[3] = context->offset.v;

            context->offsetScreen.h += off.x;
            context->offsetScreen.v += off.y;
            context->offset.h += off.x;
            context->offset.v += off.y;

        	drawRect (context, _rect);

			// restore
            context->offsetScreen.h = save[0];
            context->offsetScreen.v = save[1];
            context->offset.h = save[2];
            context->offset.v = save[3];
        }
		else
		{
        	drawRect (context, _rect);
		}
    }
}

//-----------------------------------------------------------------------------
bool CViewContainer::hitTestSubViews (const CPoint& where, const long buttons)
{
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    CCView *pSv = pLastView;
    while (pSv)
    {
        CView *pV = pSv->pView;
        if (pV && pV->getMouseEnabled () && pV->hitTest (where2, buttons))
            return true;
        pSv = pSv->pPrevious;
    }
    return false;
}

//-----------------------------------------------------------------------------
bool CViewContainer::hitTest (const CPoint& where, const long buttons)
{
    //return hitTestSubViews (where); would change default behavior
    return CView::hitTest (where, buttons);
}

//-----------------------------------------------------------------------------
void CViewContainer::mouse (CDrawContext *pContext, CPoint &where, long buttons)
{
    // convert to relativ pos
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    if (buttons == -1 && pContext)
        buttons = pContext->getMouseButtons ();

    CCView *pSv = pLastView;
    while (pSv)
    {
        CView *pV = pSv->pView;
        if (pV && pV->getMouseEnabled () && pV->hitTest (where2, buttons))
        {
            pV->mouse (pContext, where2, buttons);
            break;
        }
        pSv = pSv->pPrevious;
    }
}

//-----------------------------------------------------------------------------
long CViewContainer::onKeyDown (VstKeyCode& keyCode)
{
    long result = -1;

    CCView* pSv = pLastView;
    while (pSv)
    {
        long result = pSv->pView->onKeyDown (keyCode);
        if (result != -1)
            break;

        pSv = pSv->pPrevious;
    }

    return result;
}

//-----------------------------------------------------------------------------
long CViewContainer::onKeyUp (VstKeyCode& keyCode)
{
    long result = -1;

    CCView* pSv = pLastView;
    while (pSv)
    {
        long result = pSv->pView->onKeyUp (keyCode);
        if (result != -1)
            break;

        pSv = pSv->pPrevious;
    }

    return result;
}

//-----------------------------------------------------------------------------
bool CViewContainer::onWheel (CDrawContext *pContext, const CPoint &where, const CMouseWheelAxis axis, float distance)
{
    bool result = false;
    CView *view = getViewAt (where);
    if (view)
    {
        // convert to relativ pos
        CPoint where2 (where);
        where2.offset (-size.left, -size.top);

        CCoord save[4];
        modifyDrawContext (save, pContext);

        result = view->onWheel (pContext, where2, axis, distance);

        restoreDrawContext (pContext, save);
    }
    return result;
}

//-----------------------------------------------------------------------------
bool CViewContainer::onWheel (CDrawContext *pContext, const CPoint &where, float distance)
{
    return onWheel (pContext, where, kMouseWheelAxisY, distance);
}

//-----------------------------------------------------------------------------
bool CViewContainer::onDrop (CDrawContext* context, CDragContainer* drag, const CPoint& where)
{
    if (!pParentFrame)
        return false;

    bool result = false;

    CCoord save[4];
    modifyDrawContext (save, context);

    // convert to relativ pos
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    CView* view = getViewAt (where);
    if (view != currentDragView)
    {
        if (currentDragView)
            currentDragView->onDragLeave (context, drag, where2);
        currentDragView = view;
    }
    if (currentDragView)
    {
        result = currentDragView->onDrop (context, drag, where2);
        currentDragView->onDragLeave (context, drag, where2);
    }
    currentDragView = 0;

    restoreDrawContext (context, save);

    return result;
}

//-----------------------------------------------------------------------------
void CViewContainer::onDragEnter (CDrawContext* context, CDragContainer* drag, const CPoint& where)
{
    if (!pParentFrame)
        return;

    CCoord save[4];
    modifyDrawContext (save, context);

    // convert to relativ pos
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    if (currentDragView)
        currentDragView->onDragLeave (context, drag, where2);
    CView* view = getViewAt (where);
    currentDragView = view;
    if (view)
        view->onDragEnter (context, drag, where2);

    restoreDrawContext (context, save);
}

//-----------------------------------------------------------------------------
void CViewContainer::onDragLeave (CDrawContext* context, CDragContainer* drag, const CPoint& where)
{
    if (!pParentFrame)
        return;

    CCoord save[4];
    modifyDrawContext (save, context);

    // convert to relativ pos
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    if (currentDragView)
        currentDragView->onDragLeave (context, drag, where2);
    currentDragView = 0;

    restoreDrawContext (context, save);
}

//-----------------------------------------------------------------------------
void CViewContainer::onDragMove (CDrawContext* context, CDragContainer* drag, const CPoint& where)
{
    if (!pParentFrame)
        return;

    CCoord save[4];
    modifyDrawContext (save, context);

    // convert to relativ pos
    CPoint where2 (where);
    where2.offset (-size.left, -size.top);

    CView* view = getViewAt (where);
    if (view != currentDragView)
    {
        if (currentDragView)
            currentDragView->onDragLeave (context, drag, where2);
        if (view)
            view->onDragEnter (context, drag, where2);
        currentDragView = view;
    }
    else if (currentDragView)
        currentDragView->onDragMove (context, drag, where2);

    restoreDrawContext (context, save);
}

//-----------------------------------------------------------------------------
void CViewContainer::update (CDrawContext *pContext)
{
    switch (mode)
    {
        //---Normal : redraw all...
        case kNormalUpdate:
            if (isDirty ())
            {
#if NEW_UPDATE_MECHANISM
                CRect ur (0, 0, size.width (), size.height ());
                redrawRect (pContext, ur);
#else
    #if USE_ALPHA_BLEND
                if (bTransparencyEnabled)
                {
                    CRect updateRect (size);
                    CPoint offset (0,0);
                    localToFrame (offset);
                    updateRect.offset (offset.x, offset.y);
                    getFrame ()->drawRect (pContext, updateRect);
                }
                else
    #endif
                draw (pContext);
    #endif
                setDirty (false);
            }
        break;

        //---Redraw only dirty controls-----
        case kOnlyDirtyUpdate:
        {
#if NEW_UPDATE_MECHANISM
            if (bDirty)
            {
                CRect ur (0, 0, size.width (), size.height ());
                redrawRect (pContext, ur);
            }
            else
            {
                CRect updateRect (size);
                updateRect.offset (-size.left, -size.top);
                FOREACHSUBVIEW
                    if (pV->isDirty () && pV->checkUpdate (updateRect))
                    {
                        if (pV->notify (this, kMsgCheckIfViewContainer))
                            pV->update (pContext);
                        else
                        {
                            CRect drawSize (pV->size);
                            drawSize.bound (updateRect);
                            pV->redrawRect (pContext, drawSize);
                        }
                    }
                ENDFOR
            }
#else
    #if USE_ALPHA_BLEND
            if (bTransparencyEnabled)
            {
                if (bDirty)
                {
                    CRect updateRect (size);
                    CPoint offset (0,0);
                    localToFrame (offset);
                    updateRect.offset (offset.x, offset.y);
                    getFrame ()->drawRect (pContext, updateRect);
                }
                else
                {
                    CRect updateRect (size);
                    updateRect.offset (-size.left, -size.top);
                    FOREACHSUBVIEW
                        if (pV->isDirty () && pV->checkUpdate (updateRect))
                        {
                            if (pV->notify (this, kMsgCheckIfViewContainer))
                            {
                                pV->update (pContext);
                            }
                            else
                            {
                                CPoint offset;
                                CRect viewSize (pV->size);
                                pV->localToFrame (offset);
                                viewSize.offset (offset.x, offset.y);
                                getFrame ()->drawRect (pContext, viewSize);
                            }
                        }
                    ENDFOR
                }
                setDirty (false);
                return;
            }
    #endif
            if (bDirty)
                draw (pContext);
            else if (bDrawInOffscreen && pOffscreenContext)
            {
                bool doCopy = false;
                if (isDirty ())
                    doCopy = true;

                FOREACHSUBVIEW
                    pV->update (pOffscreenContext);
                ENDFOR

                // transfert offscreen
                if (doCopy)
                    pOffscreenContext->copyFrom (pContext, size);
            }
            else
            {
                long save[4];
                modifyDrawContext (save, pContext);

                FOREACHSUBVIEW
                    if (pV->isDirty ())
                    {
                        long oldMode = 0;
                        CViewContainer* child = 0;
                        if (pV->notify (this, kMsgCheckIfViewContainer))
                        {
                            child = (CViewContainer*)pV;
                            oldMode = child->getMode ();
                            child->setMode (kNormalUpdate);
                        }
                        CRect viewSize (pV->size);
                        drawBackgroundRect (pContext, viewSize);
                        pV->update (pContext);
                        if (child)
                            child->setMode (oldMode);
                    }
                ENDFOR

                restoreDrawContext (pContext, save);
            }
#endif
            setDirty (false);
        break;
        }
    }
}

//-----------------------------------------------------------------------------
void CViewContainer::looseFocus (CDrawContext *pContext)
{
    FOREACHSUBVIEW
        pV->looseFocus (pContext);
    ENDFOR
}

//-----------------------------------------------------------------------------
void CViewContainer::takeFocus (CDrawContext *pContext)
{
    FOREACHSUBVIEW
        pV->takeFocus (pContext);
    ENDFOR
}

//-----------------------------------------------------------------------------
bool CViewContainer::advanceNextFocusView (CView* oldFocus, bool reverse)
{
    bool foundOld = false;
    FOREACHSUBVIEW_REVERSE(reverse)
        if (oldFocus && !foundOld)
        {
            if (oldFocus == pV)
            {
                foundOld = true;
                continue;
            }
        }
        else
        {
            if (pV->wantsFocus ())
            {
                getFrame ()->setFocusView (pV);
                return true;
            }
            else if (pV->isTypeOf ("CViewContainer"))
            {
                if (((CViewContainer*)pV)->advanceNextFocusView (0, reverse))
                    return true;
            }
        }
    ENDFOR
    return false;
}

//-----------------------------------------------------------------------------
bool CViewContainer::isDirty () const
{
    if (bDirty)
        return true;

    CRect viewSize (size);
    viewSize.offset (-size.left, -size.top);

    FOREACHSUBVIEW
        if (pV->isDirty ())
        {
            CRect r (pV->size);
            r.bound (viewSize);
            if (r.getWidth () > 0 && r.getHeight () > 0)
                return true;
        }
    ENDFOR
    return false;
}

//-----------------------------------------------------------------------------
CView *CViewContainer::getCurrentView () const
{
    if (!pParentFrame)
        return 0;

    // get the current position
    CPoint where;
    pParentFrame->getCurrentLocation (where);

    frameToLocal (where);

    CCView *pSv = pLastView;
    while (pSv)
    {
        CView *pV = pSv->pView;
        if (pV && where.isInside (pV->mouseableArea))
            return pV;
        pSv = pSv->pPrevious;
    }

    return 0;
}

//-----------------------------------------------------------------------------
CView *CViewContainer::getViewAt (const CPoint& p, bool deep) const
{
    if (!pParentFrame)
        return 0;

    CPoint where (p);

    // convert to relativ pos
    where.offset (-size.left, -size.top);

    CCView *pSv = pLastView;
    while (pSv)
    {
        CView *pV = pSv->pView;
        if (pV && where.isInside (pV->mouseableArea))
        {
            if (deep)
            {
                if (pV->isTypeOf ("CViewContainer"))
                    return ((CViewContainer*)pV)->getViewAt (where, deep);
            }
            return pV;
        }
        pSv = pSv->pPrevious;
    }

    return 0;
}

//-----------------------------------------------------------------------------
CPoint& CViewContainer::frameToLocal (CPoint& point) const
{
    point.offset (-size.left, -size.top);
    if (pParentView && pParentView->isTypeOf ("CViewContainer"))
        return pParentView->frameToLocal (point);
    return point;
}

//-----------------------------------------------------------------------------
CPoint& CViewContainer::localToFrame (CPoint& point) const
{
    point.offset (size.left, size.top);
    if (pParentView && pParentView->isTypeOf ("CViewContainer"))
        return pParentView->localToFrame (point);
    return point;
}

//-----------------------------------------------------------------------------
bool CViewContainer::removed (CView* parent)
{
     if (pOffscreenContext)
        pOffscreenContext->forget ();
    pOffscreenContext = 0;

    return true;
}

//-----------------------------------------------------------------------------
bool CViewContainer::attached (CView* view)
{
    // create offscreen bitmap
    if (!pOffscreenContext && bDrawInOffscreen)
        pOffscreenContext = new COffscreenContext (pParentFrame, (long)size.width (), (long)size.height (), kBlackCColor);

    return true;
}

//-----------------------------------------------------------------------------
void CViewContainer::useOffscreen (bool b)
{
    bDrawInOffscreen = b;

    if (!bDrawInOffscreen && pOffscreenContext)
    {
        pOffscreenContext->forget ();
        pOffscreenContext = 0;
    }
}

//-----------------------------------------------------------------------------
void CViewContainer::modifyDrawContext (CCoord save[4], CDrawContext* pContext)
{
    // store
    save[0] = pContext->offsetScreen.h;
    save[1] = pContext->offsetScreen.v;
    save[2] = pContext->offset.h;
    save[3] = pContext->offset.v;

    pContext->offsetScreen.h += size.left;
    pContext->offsetScreen.v += size.top;
    pContext->offset.h += size.left;
    pContext->offset.v += size.top;
}

//-----------------------------------------------------------------------------
void CViewContainer::restoreDrawContext (CDrawContext* pContext, CCoord save[4])
{
    // restore
    pContext->offsetScreen.h = save[0];
    pContext->offsetScreen.v = save[1];
    pContext->offset.h = save[2];
    pContext->offset.v = save[3];
}

#if DEBUG
static long _debugDumpLevel = 0;
//-----------------------------------------------------------------------------
void CViewContainer::dumpInfo ()
{
    static const char* modeString[] = { "Normal Update Mode", "Only Dirty Update Mode"};
    DebugPrint ("CViewContainer: Mode: %s, Offscreen:%s ", modeString[mode], bDrawInOffscreen ? "Yes" : "No");
    CView::dumpInfo ();
}

//-----------------------------------------------------------------------------
void CViewContainer::dumpHierarchy ()
{
    _debugDumpLevel++;
    FOREACHSUBVIEW
        for (long i = 0; i < _debugDumpLevel; i++)
            DebugPrint ("\t");
        pV->dumpInfo ();
        DebugPrint ("\n");
        if (pV->isTypeOf ("CViewContainer"))
            ((CViewContainer*)pV)->dumpHierarchy ();
    ENDFOR
    _debugDumpLevel--;
}

#endif


//-----------------------------------------------------------------------------
// CBitmap Implementation
//-----------------------------------------------------------------------------
/*! @class CBitmap
 * Image resources must be in PNG format.
 * Filenames are specified by the pngResources table defined in the GUI.
 */
CBitmap::CBitmap (long ID)
    : resourceID (ID), width (0), height (0), noAlpha (true)
{
#if DEBUG
    gNbCBitmap++;
#endif

	pHandle = 0;
	pngRead = NULL;
	pngInfo = NULL;

	bool found = false;
    long i = 0;

	const char* p = NULL;
	while (pngResources[i].id != 0) {
        if (pngResources[i].id == resourceID) {
            if (pngResources[i].path != NULL) {
				found = true;
				p = pngResources[i].path;
				break;
			}
		}
		++i;
	}

	if (VSTGUI::bundlePath == NULL) {
		std::cerr << "ERROR: No bundle path set, unable to load images" << std::endl;
	} else {
		std::string path = std::string(VSTGUI::bundlePath) + p;
		if (openPng(path.c_str())) // reads width, height
			closePng();
	}

    setTransparentColor (kTransparentCColor);

#if DEBUG
    gBitmapAllocation += (long)height * (long)width;
#endif
}

//-----------------------------------------------------------------------------
CBitmap::CBitmap (CFrame &frame, CCoord width, CCoord height)
    : width (width), height (height), noAlpha (true), pMask (0)
{
#if DEBUG
    gNbCBitmap++;
#endif

    pHandle = (void*) XCreatePixmap (display,
                                     frame.getBackBuffer (),
                                     width,
                                     height,
                                     frame.getDepth ());

    setTransparentColor (kTransparentCColor);
}

//-----------------------------------------------------------------------------
CBitmap::CBitmap ()
	: resourceID (0)
	, width (0)
	, height (0)
	, noAlpha (true)
{
    pMask = 0;
    pHandle = 0;
}

//-----------------------------------------------------------------------------
CBitmap::~CBitmap ()
{
    dispose ();
}

//-----------------------------------------------------------------------------
void CBitmap::dispose ()
{
#if DEBUG
    gNbCBitmap--;
    gBitmapAllocation -= (long)height * (long)width;
#endif

    if (pHandle)
        XFreePixmap (display, (Pixmap)pHandle);
    if (pMask)
        XFreePixmap (display, (Pixmap)pMask);

    pHandle = 0;
    pMask = 0;

    width = 0;
    height = 0;

}

//-----------------------------------------------------------------------------
void *CBitmap::getHandle () const
{
    return pHandle;
}

//-----------------------------------------------------------------------------
bool CBitmap::loadFromResource (long resourceID)
{
    dispose ();
	fprintf (stderr, "CBitmap::loadFromResource not implemented\n");
    return false;
}

//-----------------------------------------------------------------------------
bool CBitmap::loadFromPath (const void* platformPath)
{
	if (pHandle != NULL)
		dispose ();

	bool success = openPng ((char*)platformPath);
	if (success)
		closePng ();

	return success;
}

//-----------------------------------------------------------------------------
bool CBitmap::isLoaded () const
{
    return (pHandle != NULL);
}

//-----------------------------------------------------------------------------
void CBitmap::draw (CDrawContext *pContext, CRect &rect, const CPoint &offset)
{
    if (!pHandle)
    {
        // the first time try to decode the pixmap
        pHandle = createPixmapFromPng (pContext);
        if (!pHandle)
            return;
    }

    CFrame* frame = pContext->pFrame;

    XCopyArea (display,
               (Drawable) pHandle,
               (Drawable) frame->getBackBuffer(),
               (GC) frame->getGC(),
               offset.h,
               offset.v,
               std::min (rect.width (), getWidth()),
               std::min (rect.height (), getHeight()),
               rect.left + pContext->offset.h,
               rect.top + pContext->offset.v);
}

//-----------------------------------------------------------------------------
void CBitmap::drawTransparent (CDrawContext *pContext, CRect &rect, const CPoint &offset)
{
    if (!pHandle)
    {
        // the first time try to decode the pixmap
        pHandle = createPixmapFromPng (pContext);
        if (!pHandle)
            return;
    }

    CFrame* frame = pContext->pFrame;

    if (pMask == 0)
    {
        // get image from the pixmap
        XImage* image = XGetImage (display, (Drawable)pHandle,
                                   0, 0, width, height, AllPlanes, ZPixmap);
        assert (image);

        // create the bitmap mask
        pMask = (void*) XCreatePixmap (display, (Drawable)frame->getWindow(),
                                       width, height, 1);
        assert (pMask);

        // create a associated GC
        XGCValues values;
        values.foreground = 1;
        GC gc = XCreateGC (display, (Drawable)pMask, GCForeground, &values);

        // clear the mask
        XFillRectangle (display, (Drawable)pMask, gc, 0, 0, width, height);

        // get the transparent color index
        int color = pContext->getIndexColor (transparentCColor);

        // inverse the color
        values.foreground = 0;
        XChangeGC (display, gc, GCForeground, &values);

        // compute the mask
        XPoint *points = new XPoint [height * width];
        int x, y, nbPoints = 0;
        switch (image->depth)
        {
        case 8:
            for (y = 0; y < height; y++)
            {
                char* src = image->data + (y * image->bytes_per_line);

                for (x = 0; x < width; x++)
                {
                    if (src[x] == color)
                    {
                        points[nbPoints].x = x;
                        points[nbPoints].y = y;
                        nbPoints++;
                    }
                }
            }
            break;

        case 24: {
            int bytesPerPixel = image->bits_per_pixel >> 3;
            char *lp = image->data;
            for (y = 0; y < height; y++)
            {
                char* cp = lp;
                for (x = 0; x < width; x++)
                {
                    if (*(int*)cp == color)
                    {
                        points[nbPoints].x = x;
                        points[nbPoints].y = y;
                        nbPoints++;
                    }
                    cp += bytesPerPixel;
                }
                lp += image->bytes_per_line;
            }
        } break;

        default :
            break;
        }

        XDrawPoints (display, (Drawable)pMask, gc,
                     points, nbPoints, CoordModeOrigin);

        // free
        XFreeGC (display, gc);
        delete []points;

        // delete
        XDestroyImage (image);
    }

    // set the new clipmask
    XGCValues value;
    value.clip_mask = (Pixmap)pMask;
    value.clip_x_origin = (rect.left + pContext->offset.h) - offset.h;
    value.clip_y_origin = (rect.top + pContext->offset.v) - offset.v;

    XChangeGC (display,
               (GC) /*frame->getGC(),*/ pContext->pSystemContext,
               GCClipMask | GCClipXOrigin | GCClipYOrigin,
               &value);

    XCopyArea (display,
               (Drawable) pHandle,
               (Drawable) frame->getBackBuffer(),
               (GC) frame->getGC(),
               offset.h,
               offset.v,
               rect.width (),
               rect.height (),
               rect.left + pContext->offset.h,
               rect.top + pContext->offset.v);

    // unset the clipmask
    XSetClipMask (display, (GC)frame->getGC(), None);
}

//-----------------------------------------------------------------------------
void CBitmap::drawAlphaBlend (CDrawContext *pContext, CRect &rect, const CPoint &offset, unsigned char alpha)
{
    std::cout << "CBitmap::drawAlphaBlend (not implemented!)" << std::endl;
}

//-----------------------------------------------------------------------------
void CBitmap::setTransparentColor (const CColor color)
{
    transparentCColor = color;
}

//-----------------------------------------------------------------------------
void CBitmap::setTransparencyMask (CDrawContext* pContext, const CPoint& offset)
{
    // todo: implement me!
}


//-----------------------------------------------------------------------------
bool CBitmap::openPng (const char* path)
{
	assert(path);

	FILE* fp = fopen(path, "rb");
	if (!fp) {
		fprintf(stderr, "Unable to open file %s\n", path);
		return false;
	}

	png_byte header[8];
	fread(header, 1, 8, fp);
	if (png_sig_cmp(header, 0, 8)) {
		fprintf(stderr, "File not recognized as a PNG image");
		return false;
	}

	pngRead = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
    if (!pngRead) {
		fprintf(stderr, "Unable to initialize libpng\n");
		return false;
	}

	pngInfo = png_create_info_struct(pngRead);
    if (!pngInfo) {
        png_destroy_read_struct(&pngRead, NULL, NULL);
		pngRead = NULL;
        return false;
    }

	png_init_io(pngRead, fp);
	png_set_sig_bytes(pngRead, 8);

	png_read_info(pngRead, pngInfo);

	width = pngInfo->width;
	height = pngInfo->height;

	pngFp = fp;
	pngRead = pngRead;
	pngPath = path;

	return true;
}

//-----------------------------------------------------------------------------
bool CBitmap::closePng ()
{
	png_destroy_read_struct(&pngRead, &pngInfo, NULL);
	fclose(pngFp);
	pngFp = NULL;
	pngRead = NULL;
	pngInfo = NULL;
	return true;
}

//-----------------------------------------------------------------------------
void* CBitmap::createPixmapFromPng (CDrawContext *pContext)
{
	if (!openPng(pngPath.c_str()))
        return NULL;

	assert(width > 0 && height > 0);

	png_byte** rows = (png_byte**)malloc(height * sizeof(png_byte*));
	for (int i = 0; i < height; ++i)
		rows[i] = (png_byte*)(malloc(pngInfo->width * sizeof(uint32_t)));

	png_read_image(pngRead, rows);

	CFrame* frame = pContext->pFrame;

	Pixmap p = XCreatePixmap(display, frame->getBackBuffer(),
			pngInfo->width, pngInfo->height, 24);

	XGCValues values;
    values.foreground = 0xFFFFFFFF;

	// Draw
	GC gc = XCreateGC (display, p, GCForeground, &values);
	for (unsigned y = 0; y < pngInfo->height; y++) {
		for (unsigned x = 0; x < pngInfo->width; ++x) {
			char r = rows[y][(x*3)];
			char g = rows[y][(x*3)+1];
			char b = rows[y][(x*3)+2];
			uint32_t color = (r << 16) + (g << 8) + b;
			XSetForeground(display, gc, color);
			XDrawPoint(display, p, gc, x, y);
		}
	}
    XFreeGC (display, gc);

	closePng();

	return (void*)p;
}

//-----------------------------------------------------------------------------
// CDragContainer Implementation
//-----------------------------------------------------------------------------
CDragContainer::CDragContainer (void* platformDrag)
: platformDrag (platformDrag)
, nbItems (0)
, iterator (0)
, lastItem (0)
{
}

//-----------------------------------------------------------------------------
CDragContainer::~CDragContainer ()
{
    if (lastItem)
    {
        free (lastItem);
        lastItem = 0;
    }
}

//-----------------------------------------------------------------------------
long CDragContainer::getType (long idx) const
{
    // not implemented
    return kUnknown;
}

//-----------------------------------------------------------------------------
void* CDragContainer::first (long& size, long& type)
{
    iterator = 0;
    return next (size, type);
}

//-----------------------------------------------------------------------------
void* CDragContainer::next (long& size, long& type)
{
    if (lastItem)
    {
        free (lastItem);
        lastItem = 0;
    }
    size = 0;
    type = kUnknown;

    // not implemented

    return NULL;
}

} // namespace VSTGUI

//-----------------------------------------------------------------------------
// return a degre value between [0, 360 * 64[
static long convertPoint2Angle (CPoint &pm, CPoint &pt)
{
    long angle;
    if (pt.h == pm.h)
    {
        if (pt.v < pm.v)
            angle = 5760;    // 90 * 64
        else
            angle = 17280; // 270 * 64
    }
    else if (pt.v == pm.v)
    {
        if (pt.h < pm.h)
            angle = 11520;    // 180 * 64
        else
            angle = 0;
    }
    else
    {
        // 3666.9299 = 180 * 64 / pi
        angle = (long)(3666.9298 * atan ((double)(pm.v - pt.v) / (double)(pt.h - pm.h)));

        if (pt.v < pm.v)
        {
            if (pt.h < pm.h)
                angle += 11520; // 180 * 64
        }
        else
        {
            if (pt.h < pm.h)
                angle += 11520; // 180 * 64
            else
                angle += 23040; // 360 * 64
        }
    }
    return angle;
}



#if !PLUGGUI
//-----------------------------------------------------------------------------
// CFileSelector Implementation
//-----------------------------------------------------------------------------
#define stringAnyType  "Any Type (*.*)"
#define stringAllTypes "All Types: ("
#define stringSelect   "Select"
#define stringCancel   "Cancel"
#define stringLookIn   "Look in"
#define kPathMax        1024

namespace VSTGUI {

//-----------------------------------------------------------------------------
CFileSelector::CFileSelector (AudioEffectX* effect)
: effect (effect), vstFileSelect (0)
{}

//-----------------------------------------------------------------------------
CFileSelector::~CFileSelector ()
{
    if (vstFileSelect)
    {
        if (effect && effect->canHostDo ("closeFileSelector"))
            effect->closeFileSelector (vstFileSelect);
        else
        {
            if (vstFileSelect->reserved == 1 && vstFileSelect->returnPath)
            {
                delete []vstFileSelect->returnPath;
                vstFileSelect->returnPath = 0;
                vstFileSelect->sizeReturnPath = 0;
            }
            if (vstFileSelect->returnMultiplePaths)
            {
                for (long i = 0; i < vstFileSelect->nbReturnPath; i++)
                {
                    delete []vstFileSelect->returnMultiplePaths[i];
                    vstFileSelect->returnMultiplePaths[i] = 0;
                }
                delete[] vstFileSelect->returnMultiplePaths;
                vstFileSelect->returnMultiplePaths = 0;
            }
        }
    }
}

//-----------------------------------------------------------------------------
long CFileSelector::run (VstFileSelect *vstFileSelect_)
{
    vstFileSelect = vstFileSelect_;
    vstFileSelect->nbReturnPath = 0;
    vstFileSelect->returnPath[0] = 0;

    if (effect
        && effect->canHostDo ("openFileSelector")
        && effect->canHostDo ("closeFileSelector"))
    {
        if (effect->openFileSelector (vstFileSelect))
            return vstFileSelect->nbReturnPath;
    }
    return 0;
}

} // namespace VSTGUI

//-----------------------------------------------------------------------------
#endif // !PLUGGUI
//-----------------------------------------------------------------------------