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Diffstat (limited to 'include/pugl/detail/win.c')
| -rw-r--r-- | include/pugl/detail/win.c | 1152 |
1 files changed, 1152 insertions, 0 deletions
diff --git a/include/pugl/detail/win.c b/include/pugl/detail/win.c new file mode 100644 index 0000000..078b0a0 --- /dev/null +++ b/include/pugl/detail/win.c @@ -0,0 +1,1152 @@ +/* + Copyright 2012-2020 David Robillard <d@drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/** + @file win.c + @brief Windows implementation. +*/ + +#include "pugl/detail/win.h" + +#include "pugl/detail/implementation.h" +#include "pugl/detail/stub.h" +#include "pugl/pugl.h" +#include "pugl/pugl_stub.h" + +#include <windows.h> +#include <windowsx.h> + +#include <math.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <wctype.h> + +#ifndef WM_MOUSEWHEEL +# define WM_MOUSEWHEEL 0x020A +#endif +#ifndef WM_MOUSEHWHEEL +# define WM_MOUSEHWHEEL 0x020E +#endif +#ifndef WHEEL_DELTA +# define WHEEL_DELTA 120 +#endif +#ifndef GWLP_USERDATA +# define GWLP_USERDATA (-21) +#endif + +#define PUGL_LOCAL_CLOSE_MSG (WM_USER + 50) +#define PUGL_LOCAL_MARK_MSG (WM_USER + 51) +#define PUGL_LOCAL_CLIENT_MSG (WM_USER + 52) +#define PUGL_RESIZE_TIMER_ID 9461 +#define PUGL_USER_TIMER_MIN 9470 + +typedef BOOL (WINAPI *PFN_SetProcessDPIAware)(void); + +LRESULT CALLBACK +wndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); + +static wchar_t* +puglUtf8ToWideChar(const char* const utf8) +{ + const int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0); + if (len > 0) { + wchar_t* result = (wchar_t*)calloc((size_t)len, sizeof(wchar_t)); + MultiByteToWideChar(CP_UTF8, 0, utf8, -1, result, len); + return result; + } + + return NULL; +} + +static char* +puglWideCharToUtf8(const wchar_t* const wstr, size_t* len) +{ + int n = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL); + if (n > 0) { + char* result = (char*)calloc((size_t)n, sizeof(char)); + WideCharToMultiByte(CP_UTF8, 0, wstr, -1, result, n, NULL, NULL); + *len = (size_t)n; + return result; + } + + return NULL; +} + +static bool +puglRegisterWindowClass(const char* name) +{ + WNDCLASSEX wc = { 0 }; + if (GetClassInfoEx(GetModuleHandle(NULL), name, &wc)) { + return true; // Already registered + } + + wc.cbSize = sizeof(wc); + wc.style = CS_OWNDC; + wc.lpfnWndProc = wndProc; + wc.hInstance = GetModuleHandle(NULL); + wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); + wc.hCursor = LoadCursor(NULL, IDC_ARROW); + wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); + wc.lpszClassName = name; + + return RegisterClassEx(&wc); +} + +PuglWorldInternals* +puglInitWorldInternals(PuglWorldType PUGL_UNUSED(type), + PuglWorldFlags PUGL_UNUSED(flags)) +{ + PuglWorldInternals* impl = (PuglWorldInternals*)calloc( + 1, sizeof(PuglWorldInternals)); + if (!impl) { + return NULL; + } + + HMODULE user32 = LoadLibrary("user32.dll"); + if (user32) { + PFN_SetProcessDPIAware SetProcessDPIAware = + (PFN_SetProcessDPIAware)GetProcAddress( + user32, "SetProcessDPIAware"); + if (SetProcessDPIAware) { + SetProcessDPIAware(); + } + + FreeLibrary(user32); + } + + LARGE_INTEGER frequency; + QueryPerformanceFrequency(&frequency); + impl->timerFrequency = (double)frequency.QuadPart; + + return impl; +} + +void* +puglGetNativeWorld(PuglWorld* PUGL_UNUSED(world)) +{ + return GetModuleHandle(NULL); +} + +PuglInternals* +puglInitViewInternals(void) +{ + return (PuglInternals*)calloc(1, sizeof(PuglInternals)); +} + +static PuglStatus +puglPollWinEvents(PuglWorld* world, const double timeout) +{ + (void)world; + + if (timeout < 0) { + WaitMessage(); + } else { + MsgWaitForMultipleObjects( + 0, NULL, FALSE, (DWORD)(timeout * 1e3), QS_ALLEVENTS); + } + return PUGL_SUCCESS; +} + +PuglStatus +puglRealize(PuglView* view) +{ + PuglInternals* impl = view->impl; + if (impl->hwnd) { + return PUGL_FAILURE; + } + + // Getting depth from the display mode seems tedious, just set usual values + if (view->hints[PUGL_RED_BITS] == PUGL_DONT_CARE) { + view->hints[PUGL_RED_BITS] = 8; + } + if (view->hints[PUGL_BLUE_BITS] == PUGL_DONT_CARE) { + view->hints[PUGL_BLUE_BITS] = 8; + } + if (view->hints[PUGL_GREEN_BITS] == PUGL_DONT_CARE) { + view->hints[PUGL_GREEN_BITS] = 8; + } + if (view->hints[PUGL_ALPHA_BITS] == PUGL_DONT_CARE) { + view->hints[PUGL_ALPHA_BITS] = 8; + } + + // Get refresh rate for resize draw timer + DEVMODEA devMode = {0}; + EnumDisplaySettingsA(NULL, ENUM_CURRENT_SETTINGS, &devMode); + view->hints[PUGL_REFRESH_RATE] = (int)devMode.dmDisplayFrequency; + + // Register window class if necessary + if (!puglRegisterWindowClass(view->world->className)) { + return PUGL_REGISTRATION_FAILED; + } + + if (!view->backend || !view->backend->configure) { + return PUGL_BAD_BACKEND; + } + + PuglStatus st; + if ((st = view->backend->configure(view))) { + return st; + } else if ((st = view->backend->create(view))) { + return st; + } + + if (view->title) { + puglSetWindowTitle(view, view->title); + } + + view->impl->cursor = LoadCursor(NULL, IDC_ARROW); + + puglSetFrame(view, view->frame); + SetWindowLongPtr(impl->hwnd, GWLP_USERDATA, (LONG_PTR)view); + + puglDispatchSimpleEvent(view, PUGL_CREATE); + + return PUGL_SUCCESS; +} + +PuglStatus +puglShowWindow(PuglView* view) +{ + PuglInternals* impl = view->impl; + + ShowWindow(impl->hwnd, SW_SHOWNORMAL); + SetFocus(impl->hwnd); + return PUGL_SUCCESS; +} + +PuglStatus +puglHideWindow(PuglView* view) +{ + PuglInternals* impl = view->impl; + + ShowWindow(impl->hwnd, SW_HIDE); + return PUGL_SUCCESS; +} + +void +puglFreeViewInternals(PuglView* view) +{ + if (view) { + if (view->backend) { + view->backend->destroy(view); + } + + ReleaseDC(view->impl->hwnd, view->impl->hdc); + DestroyWindow(view->impl->hwnd); + free(view->impl); + } +} + +void +puglFreeWorldInternals(PuglWorld* world) +{ + UnregisterClass(world->className, NULL); + free(world->impl); +} + +static PuglKey +keySymToSpecial(WPARAM sym) +{ + // clang-format off + switch (sym) { + case VK_F1: return PUGL_KEY_F1; + case VK_F2: return PUGL_KEY_F2; + case VK_F3: return PUGL_KEY_F3; + case VK_F4: return PUGL_KEY_F4; + case VK_F5: return PUGL_KEY_F5; + case VK_F6: return PUGL_KEY_F6; + case VK_F7: return PUGL_KEY_F7; + case VK_F8: return PUGL_KEY_F8; + case VK_F9: return PUGL_KEY_F9; + case VK_F10: return PUGL_KEY_F10; + case VK_F11: return PUGL_KEY_F11; + case VK_F12: return PUGL_KEY_F12; + case VK_BACK: return PUGL_KEY_BACKSPACE; + case VK_DELETE: return PUGL_KEY_DELETE; + case VK_LEFT: return PUGL_KEY_LEFT; + case VK_UP: return PUGL_KEY_UP; + case VK_RIGHT: return PUGL_KEY_RIGHT; + case VK_DOWN: return PUGL_KEY_DOWN; + case VK_PRIOR: return PUGL_KEY_PAGE_UP; + case VK_NEXT: return PUGL_KEY_PAGE_DOWN; + case VK_HOME: return PUGL_KEY_HOME; + case VK_END: return PUGL_KEY_END; + case VK_INSERT: return PUGL_KEY_INSERT; + case VK_SHIFT: + case VK_LSHIFT: return PUGL_KEY_SHIFT_L; + case VK_RSHIFT: return PUGL_KEY_SHIFT_R; + case VK_CONTROL: + case VK_LCONTROL: return PUGL_KEY_CTRL_L; + case VK_RCONTROL: return PUGL_KEY_CTRL_R; + case VK_MENU: + case VK_LMENU: return PUGL_KEY_ALT_L; + case VK_RMENU: return PUGL_KEY_ALT_R; + case VK_LWIN: return PUGL_KEY_SUPER_L; + case VK_RWIN: return PUGL_KEY_SUPER_R; + case VK_CAPITAL: return PUGL_KEY_CAPS_LOCK; + case VK_SCROLL: return PUGL_KEY_SCROLL_LOCK; + case VK_NUMLOCK: return PUGL_KEY_NUM_LOCK; + case VK_SNAPSHOT: return PUGL_KEY_PRINT_SCREEN; + case VK_PAUSE: return PUGL_KEY_PAUSE; + } + // clang-format on + + return (PuglKey)0; +} + +static uint32_t +getModifiers(void) +{ + // clang-format off + return (((GetKeyState(VK_SHIFT) < 0) ? PUGL_MOD_SHIFT : 0u) | + ((GetKeyState(VK_CONTROL) < 0) ? PUGL_MOD_CTRL : 0u) | + ((GetKeyState(VK_MENU) < 0) ? PUGL_MOD_ALT : 0u) | + ((GetKeyState(VK_LWIN) < 0) ? PUGL_MOD_SUPER : 0u) | + ((GetKeyState(VK_RWIN) < 0) ? PUGL_MOD_SUPER : 0u)); + // clang-format on +} + +static void +initMouseEvent(PuglEvent* event, + PuglView* view, + int button, + bool press, + LPARAM lParam) +{ + POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) }; + ClientToScreen(view->impl->hwnd, &pt); + + if (press) { + SetCapture(view->impl->hwnd); + } else { + ReleaseCapture(); + } + + event->button.time = GetMessageTime() / 1e3; + event->button.type = press ? PUGL_BUTTON_PRESS : PUGL_BUTTON_RELEASE; + event->button.x = GET_X_LPARAM(lParam); + event->button.y = GET_Y_LPARAM(lParam); + event->button.xRoot = pt.x; + event->button.yRoot = pt.y; + event->button.state = getModifiers(); + event->button.button = (uint32_t)button; +} + +static void +initScrollEvent(PuglEvent* event, PuglView* view, LPARAM lParam) +{ + POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) }; + ScreenToClient(view->impl->hwnd, &pt); + + event->scroll.time = GetMessageTime() / 1e3; + event->scroll.type = PUGL_SCROLL; + event->scroll.x = pt.x; + event->scroll.y = pt.y; + event->scroll.xRoot = GET_X_LPARAM(lParam); + event->scroll.yRoot = GET_Y_LPARAM(lParam); + event->scroll.state = getModifiers(); + event->scroll.dx = 0; + event->scroll.dy = 0; +} + +/// Return the code point for buf, or the replacement character on error +static uint32_t +puglDecodeUTF16(const wchar_t* buf, const int len) +{ + const uint32_t c0 = buf[0]; + const uint32_t c1 = buf[0]; + if (c0 >= 0xD800 && c0 < 0xDC00) { + if (len < 2) { + return 0xFFFD; // Surrogate, but length is only 1 + } else if (c1 >= 0xDC00 && c1 <= 0xDFFF) { + return ((c0 & 0x03FF) << 10) + (c1 & 0x03FF) + 0x10000; + } + + return 0xFFFD; // Unpaired surrogates + } + + return c0; +} + +static void +initKeyEvent(PuglEventKey* event, + PuglView* view, + bool press, + WPARAM wParam, + LPARAM lParam) +{ + POINT rpos = { 0, 0 }; + GetCursorPos(&rpos); + + POINT cpos = { rpos.x, rpos.y }; + ScreenToClient(view->impl->hwnd, &rpos); + + const unsigned scode = (uint32_t)((lParam & 0xFF0000) >> 16); + const unsigned vkey = ((wParam == VK_SHIFT) + ? MapVirtualKey(scode, MAPVK_VSC_TO_VK_EX) + : (unsigned)wParam); + + const unsigned vcode = MapVirtualKey(vkey, MAPVK_VK_TO_VSC); + const unsigned kchar = MapVirtualKey(vkey, MAPVK_VK_TO_CHAR); + const bool dead = kchar >> (sizeof(UINT) * 8 - 1) & 1; + const bool ext = lParam & 0x01000000; + + event->type = press ? PUGL_KEY_PRESS : PUGL_KEY_RELEASE; + event->time = GetMessageTime() / 1e3; + event->state = getModifiers(); + event->xRoot = rpos.x; + event->yRoot = rpos.y; + event->x = cpos.x; + event->y = cpos.y; + event->keycode = (uint32_t)((lParam & 0xFF0000) >> 16); + event->key = 0; + + const PuglKey special = keySymToSpecial(vkey); + if (special) { + if (ext && (special == PUGL_KEY_CTRL || special == PUGL_KEY_ALT)) { + event->key = special + 1u; // Right hand key + } else { + event->key = special; + } + } else if (!dead) { + // Translate unshifted key + BYTE keyboardState[256] = {0}; + wchar_t buf[5] = {0}; + + event->key = puglDecodeUTF16( + buf, ToUnicode(vkey, vcode, keyboardState, buf, 4, 1 << 2)); + } +} + +static void +initCharEvent(PuglEvent* event, PuglView* view, WPARAM wParam, LPARAM lParam) +{ + const wchar_t utf16[2] = { wParam & 0xFFFF, (wParam >> 16) & 0xFFFF }; + + initKeyEvent(&event->key, view, true, wParam, lParam); + event->type = PUGL_TEXT; + event->text.character = puglDecodeUTF16(utf16, 2); + + if (!WideCharToMultiByte( + CP_UTF8, 0, utf16, 2, event->text.string, 8, NULL, NULL)) { + memset(event->text.string, 0, 8); + } +} + +static bool +ignoreKeyEvent(PuglView* view, LPARAM lParam) +{ + return view->hints[PUGL_IGNORE_KEY_REPEAT] && (lParam & (1 << 30)); +} + +static RECT +handleConfigure(PuglView* view, PuglEvent* event) +{ + RECT rect; + GetClientRect(view->impl->hwnd, &rect); + MapWindowPoints(view->impl->hwnd, + view->parent ? (HWND)view->parent : HWND_DESKTOP, + (LPPOINT)&rect, + 2); + + const LONG width = rect.right - rect.left; + const LONG height = rect.bottom - rect.top; + + view->frame.x = rect.left; + view->frame.y = rect.top; + + event->configure.type = PUGL_CONFIGURE; + event->configure.x = view->frame.x; + event->configure.y = view->frame.y; + event->configure.width = width; + event->configure.height = height; + + if (view->frame.width != width || view->frame.height != height) { + view->frame.width = width; + view->frame.height = height; + } + + return rect; +} + +static void +handleCrossing(PuglView* view, const PuglEventType type, POINT pos) +{ + POINT root_pos = pos; + ClientToScreen(view->impl->hwnd, &root_pos); + + const PuglEventCrossing ev = { + type, + 0, + GetMessageTime() / 1e3, + (double)pos.x, + (double)pos.y, + (double)root_pos.x, + (double)root_pos.y, + getModifiers(), + PUGL_CROSSING_NORMAL, + }; + + puglDispatchEvent(view, (const PuglEvent*)&ev); +} + +static void +constrainAspect(const PuglView* const view, + RECT* const size, + const WPARAM wParam) +{ + const float minA = (float)view->minAspectX / (float)view->minAspectY; + const float maxA = (float)view->maxAspectX / (float)view->maxAspectY; + const int w = size->right - size->left; + const int h = size->bottom - size->top; + const float a = (float)w / (float)h; + + switch (wParam) { + case WMSZ_TOP: + size->top = (a < minA ? (LONG)(size->bottom - w * minA) : + a > maxA ? (LONG)(size->bottom - w * maxA) : + size->top); + break; + case WMSZ_TOPRIGHT: + case WMSZ_RIGHT: + case WMSZ_BOTTOMRIGHT: + size->right = (a < minA ? (LONG)(size->left + h * minA) : + a > maxA ? (LONG)(size->left + h * maxA) : + size->right); + break; + case WMSZ_BOTTOM: + size->bottom = (a < minA ? (LONG)(size->top + w * minA) : + a > maxA ? (LONG)(size->top + w * maxA) : + size->bottom); + break; + case WMSZ_BOTTOMLEFT: + case WMSZ_LEFT: + case WMSZ_TOPLEFT: + size->left = (a < minA ? (LONG)(size->right - h * minA) : + a > maxA ? (LONG)(size->right - h * maxA) : + size->left); + break; + } +} + +static LRESULT +handleMessage(PuglView* view, UINT message, WPARAM wParam, LPARAM lParam) +{ + PuglEvent event; + void* dummy_ptr = NULL; + RECT rect; + MINMAXINFO* mmi; + POINT pt; + + memset(&event, 0, sizeof(event)); + + event.any.type = PUGL_NOTHING; + if (InSendMessageEx(dummy_ptr)) { + event.any.flags |= PUGL_IS_SEND_EVENT; + } + + switch (message) { + case WM_SETCURSOR: + if (LOWORD(lParam) == HTCLIENT) { + SetCursor(view->impl->cursor); + } else { + return DefWindowProc(view->impl->hwnd, message, wParam, lParam); + } + break; + case WM_SHOWWINDOW: + if (wParam) { + handleConfigure(view, &event); + puglDispatchEvent(view, &event); + event.type = PUGL_NOTHING; + + RedrawWindow(view->impl->hwnd, NULL, NULL, + RDW_INVALIDATE|RDW_ALLCHILDREN|RDW_INTERNALPAINT); + } + + if ((bool)wParam != view->visible) { + view->visible = wParam; + event.any.type = wParam ? PUGL_MAP : PUGL_UNMAP; + } + break; + case WM_SIZE: + handleConfigure(view, &event); + InvalidateRect(view->impl->hwnd, NULL, false); + break; + case WM_SIZING: + if (view->minAspectX) { + constrainAspect(view, (RECT*)lParam, wParam); + return TRUE; + } + break; + case WM_ENTERSIZEMOVE: + case WM_ENTERMENULOOP: + view->impl->resizing = true; + SetTimer(view->impl->hwnd, + PUGL_RESIZE_TIMER_ID, + 1000 / (UINT)view->hints[PUGL_REFRESH_RATE], + NULL); + break; + case WM_TIMER: + if (wParam == PUGL_RESIZE_TIMER_ID) { + RedrawWindow(view->impl->hwnd, NULL, NULL, + RDW_INVALIDATE|RDW_ALLCHILDREN|RDW_INTERNALPAINT); + } else if (wParam >= PUGL_USER_TIMER_MIN) { + PuglEvent ev = {{PUGL_TIMER, 0}}; + ev.timer.id = wParam - PUGL_USER_TIMER_MIN; + puglDispatchEvent(view, &ev); + } + break; + case WM_EXITSIZEMOVE: + case WM_EXITMENULOOP: + KillTimer(view->impl->hwnd, PUGL_RESIZE_TIMER_ID); + view->impl->resizing = false; + puglPostRedisplay(view); + break; + case WM_GETMINMAXINFO: + mmi = (MINMAXINFO*)lParam; + mmi->ptMinTrackSize.x = view->minWidth; + mmi->ptMinTrackSize.y = view->minHeight; + if (view->maxWidth > 0 && view->maxHeight > 0) { + mmi->ptMaxTrackSize.x = view->maxWidth; + mmi->ptMaxTrackSize.y = view->maxHeight; + } + break; + case WM_PAINT: + GetUpdateRect(view->impl->hwnd, &rect, false); + event.expose.type = PUGL_EXPOSE; + event.expose.x = rect.left; + event.expose.y = rect.top; + event.expose.width = rect.right - rect.left; + event.expose.height = rect.bottom - rect.top; + break; + case WM_ERASEBKGND: + return true; + case WM_MOUSEMOVE: + pt.x = GET_X_LPARAM(lParam); + pt.y = GET_Y_LPARAM(lParam); + + if (!view->impl->mouseTracked) { + TRACKMOUSEEVENT tme = {0}; + + tme.cbSize = sizeof(tme); + tme.dwFlags = TME_LEAVE; + tme.hwndTrack = view->impl->hwnd; + TrackMouseEvent(&tme); + + handleCrossing(view, PUGL_POINTER_IN, pt); + view->impl->mouseTracked = true; + } + + ClientToScreen(view->impl->hwnd, &pt); + event.motion.type = PUGL_MOTION; + event.motion.time = GetMessageTime() / 1e3; + event.motion.x = GET_X_LPARAM(lParam); + event.motion.y = GET_Y_LPARAM(lParam); + event.motion.xRoot = pt.x; + event.motion.yRoot = pt.y; + event.motion.state = getModifiers(); + break; + case WM_MOUSELEAVE: + GetCursorPos(&pt); + ScreenToClient(view->impl->hwnd, &pt); + handleCrossing(view, PUGL_POINTER_OUT, pt); + view->impl->mouseTracked = false; + break; + case WM_LBUTTONDOWN: + initMouseEvent(&event, view, 1, true, lParam); + break; + case WM_MBUTTONDOWN: + initMouseEvent(&event, view, 2, true, lParam); + break; + case WM_RBUTTONDOWN: + initMouseEvent(&event, view, 3, true, lParam); + break; + case WM_LBUTTONUP: + initMouseEvent(&event, view, 1, false, lParam); + break; + case WM_MBUTTONUP: + initMouseEvent(&event, view, 2, false, lParam); + break; + case WM_RBUTTONUP: + initMouseEvent(&event, view, 3, false, lParam); + break; + case WM_MOUSEWHEEL: + initScrollEvent(&event, view, lParam); + event.scroll.dy = GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA; + event.scroll.direction = (event.scroll.dy > 0 + ? PUGL_SCROLL_UP + : PUGL_SCROLL_DOWN); + break; + case WM_MOUSEHWHEEL: + initScrollEvent(&event, view, lParam); + event.scroll.dx = GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA; + event.scroll.direction = (event.scroll.dx > 0 + ? PUGL_SCROLL_RIGHT + : PUGL_SCROLL_LEFT); + break; + case WM_KEYDOWN: + if (!ignoreKeyEvent(view, lParam)) { + initKeyEvent(&event.key, view, true, wParam, lParam); + } + break; + case WM_KEYUP: + initKeyEvent(&event.key, view, false, wParam, lParam); + break; + case WM_CHAR: + initCharEvent(&event, view, wParam, lParam); + break; + case WM_SETFOCUS: + event.type = PUGL_FOCUS_IN; + break; + case WM_KILLFOCUS: + event.type = PUGL_FOCUS_OUT; + break; + case WM_SYSKEYDOWN: + initKeyEvent(&event.key, view, true, wParam, lParam); + break; + case WM_SYSKEYUP: + initKeyEvent(&event.key, view, false, wParam, lParam); + break; + case WM_SYSCHAR: + return TRUE; + case PUGL_LOCAL_CLIENT_MSG: + event.client.type = PUGL_CLIENT; + event.client.data1 = (uintptr_t)wParam; + event.client.data2 = (uintptr_t)lParam; + break; + case WM_QUIT: + case PUGL_LOCAL_CLOSE_MSG: + event.any.type = PUGL_CLOSE; + break; + default: + return DefWindowProc(view->impl->hwnd, message, wParam, lParam); + } + + puglDispatchEvent(view, &event); + + return 0; +} + +PuglStatus +puglGrabFocus(PuglView* view) +{ + SetFocus(view->impl->hwnd); + return PUGL_SUCCESS; +} + +bool +puglHasFocus(const PuglView* view) +{ + return GetFocus() == view->impl->hwnd; +} + +PuglStatus +puglRequestAttention(PuglView* view) +{ + FLASHWINFO info = {sizeof(FLASHWINFO), + view->impl->hwnd, + FLASHW_ALL|FLASHW_TIMERNOFG, + 1, + 0}; + + FlashWindowEx(&info); + + return PUGL_SUCCESS; +} + +PuglStatus +puglStartTimer(PuglView* view, uintptr_t id, double timeout) +{ + const UINT msec = (UINT)floor(timeout * 1000.0); + + return (SetTimer(view->impl->hwnd, PUGL_USER_TIMER_MIN + id, msec, NULL) + ? PUGL_SUCCESS + : PUGL_UNKNOWN_ERROR); +} + +PuglStatus +puglStopTimer(PuglView* view, uintptr_t id) +{ + return (KillTimer(view->impl->hwnd, PUGL_USER_TIMER_MIN + id) + ? PUGL_SUCCESS + : PUGL_UNKNOWN_ERROR); +} + +PuglStatus +puglSendEvent(PuglView* view, const PuglEvent* event) +{ + if (event->type == PUGL_CLIENT) { + PostMessage(view->impl->hwnd, + PUGL_LOCAL_CLIENT_MSG, + (WPARAM)event->client.data1, + (LPARAM)event->client.data2); + + return PUGL_SUCCESS; + } + + return PUGL_UNSUPPORTED_TYPE; +} + +#ifndef PUGL_DISABLE_DEPRECATED +PuglStatus +puglWaitForEvent(PuglView* PUGL_UNUSED(view)) +{ + WaitMessage(); + return PUGL_SUCCESS; +} +#endif + +static PuglStatus +puglDispatchViewEvents(PuglView* view) +{ + /* Windows has no facility to process only currently queued messages, which + causes the event loop to run forever in cases like mouse movement where + the queue is constantly being filled with new messages. To work around + this, we post a message to ourselves before starting, record its time + when it is received, then break the loop on the first message that was + created afterwards. */ + + long markTime = 0; + MSG msg; + while (PeekMessage(&msg, view->impl->hwnd, 0, 0, PM_REMOVE)) { + if (msg.message == PUGL_LOCAL_MARK_MSG) { + markTime = GetMessageTime(); + } else { + TranslateMessage(&msg); + DispatchMessage(&msg); + if (markTime != 0 && GetMessageTime() > markTime) { + break; + } + } + } + + return PUGL_SUCCESS; +} + +static PuglStatus +puglDispatchWinEvents(PuglWorld* world) +{ + for (size_t i = 0; i < world->numViews; ++i) { + PostMessage(world->views[i]->impl->hwnd, PUGL_LOCAL_MARK_MSG, 0, 0); + } + + for (size_t i = 0; i < world->numViews; ++i) { + puglDispatchViewEvents(world->views[i]); + } + + return PUGL_SUCCESS; +} + +PuglStatus +puglUpdate(PuglWorld* world, double timeout) +{ + const double startTime = puglGetTime(world); + PuglStatus st = PUGL_SUCCESS; + + if (timeout < 0.0) { + st = puglPollWinEvents(world, timeout); + st = st ? st : puglDispatchWinEvents(world); + } else if (timeout == 0.0) { + st = puglDispatchWinEvents(world); + } else { + const double endTime = startTime + timeout - 0.001; + for (double t = startTime; t < endTime; t = puglGetTime(world)) { + if ((st = puglPollWinEvents(world, endTime - t)) || + (st = puglDispatchWinEvents(world))) { + break; + } + } + } + + for (size_t i = 0; i < world->numViews; ++i) { + if (world->views[i]->visible) { + puglDispatchSimpleEvent(world->views[i], PUGL_UPDATE); + } + + UpdateWindow(world->views[i]->impl->hwnd); + } + + return st; +} + +#ifndef PUGL_DISABLE_DEPRECATED +PuglStatus +puglProcessEvents(PuglView* view) +{ + return puglUpdate(view->world, 0.0); +} +#endif + +LRESULT CALLBACK +wndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) +{ + PuglView* view = (PuglView*)GetWindowLongPtr(hwnd, GWLP_USERDATA); + + switch (message) { + case WM_CREATE: + PostMessage(hwnd, WM_SHOWWINDOW, TRUE, 0); + return 0; + case WM_CLOSE: + PostMessage(hwnd, PUGL_LOCAL_CLOSE_MSG, wParam, lParam); + return 0; + case WM_DESTROY: + return 0; + default: + if (view && hwnd == view->impl->hwnd) { + return handleMessage(view, message, wParam, lParam); + } else { + return DefWindowProc(hwnd, message, wParam, lParam); + } + } +} + +double +puglGetTime(const PuglWorld* world) +{ + LARGE_INTEGER count; + QueryPerformanceCounter(&count); + return ((double)count.QuadPart / world->impl->timerFrequency - + world->startTime); +} + +PuglStatus +puglPostRedisplay(PuglView* view) +{ + InvalidateRect(view->impl->hwnd, NULL, false); + return PUGL_SUCCESS; +} + +PuglStatus +puglPostRedisplayRect(PuglView* view, const PuglRect rect) +{ + const RECT r = {(long)floor(rect.x), + (long)floor(rect.y), + (long)ceil(rect.x + rect.width), + (long)ceil(rect.y + rect.height)}; + + InvalidateRect(view->impl->hwnd, &r, false); + + return PUGL_SUCCESS; +} + +PuglNativeView +puglGetNativeWindow(PuglView* view) +{ + return (PuglNativeView)view->impl->hwnd; +} + +PuglStatus +puglSetWindowTitle(PuglView* view, const char* title) +{ + puglSetString(&view->title, title); + + if (view->impl->hwnd) { + wchar_t* wtitle = puglUtf8ToWideChar(title); + if (wtitle) { + SetWindowTextW(view->impl->hwnd, wtitle); + free(wtitle); + } + } + + return PUGL_SUCCESS; +} + +PuglStatus +puglSetFrame(PuglView* view, const PuglRect frame) +{ + view->frame = frame; + + if (view->impl->hwnd) { + RECT rect = { (long)frame.x, + (long)frame.y, + (long)frame.x + (long)frame.width, + (long)frame.y + (long)frame.height }; + + AdjustWindowRectEx(&rect, puglWinGetWindowFlags(view), + FALSE, + puglWinGetWindowExFlags(view)); + + if (!SetWindowPos(view->impl->hwnd, + HWND_TOP, + rect.left, + rect.top, + rect.right - rect.left, + rect.bottom - rect.top, + SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER)) { + return PUGL_UNKNOWN_ERROR; + } + } + + return PUGL_SUCCESS; +} + +PuglStatus +puglSetDefaultSize(PuglView* const view, const int width, const int height) +{ + view->defaultWidth = width; + view->defaultHeight = height; + return PUGL_SUCCESS; +} + +PuglStatus +puglSetMinSize(PuglView* const view, const int width, const int height) +{ + view->minWidth = width; + view->minHeight = height; + return PUGL_SUCCESS; +} + +PuglStatus +puglSetMaxSize(PuglView* const view, const int width, const int height) +{ + view->maxWidth = width; + view->maxHeight = height; + return PUGL_SUCCESS; +} + +PuglStatus +puglSetAspectRatio(PuglView* const view, + const int minX, + const int minY, + const int maxX, + const int maxY) +{ + view->minAspectX = minX; + view->minAspectY = minY; + view->maxAspectX = maxX; + view->maxAspectY = maxY; + return PUGL_SUCCESS; +} + +PuglStatus +puglSetTransientFor(PuglView* view, PuglNativeView parent) +{ + if (view->parent) { + return PUGL_FAILURE; + } + + view->transientParent = parent; + + if (view->impl->hwnd) { + SetWindowLongPtr(view->impl->hwnd, GWLP_HWNDPARENT, (LONG_PTR)parent); + return GetLastError() == NO_ERROR ? PUGL_SUCCESS : PUGL_FAILURE; + } + + return PUGL_SUCCESS; +} + +const void* +puglGetClipboard(PuglView* const view, + const char** const type, + size_t* const len) +{ + PuglInternals* const impl = view->impl; + + if (!IsClipboardFormatAvailable(CF_UNICODETEXT) || + !OpenClipboard(impl->hwnd)) { + return NULL; + } + + HGLOBAL mem = GetClipboardData(CF_UNICODETEXT); + wchar_t* wstr = mem ? (wchar_t*)GlobalLock(mem) : NULL; + if (!wstr) { + CloseClipboard(); + return NULL; + } + + free(view->clipboard.data); + view->clipboard.data = puglWideCharToUtf8(wstr, &view->clipboard.len); + GlobalUnlock(mem); + CloseClipboard(); + + return puglGetInternalClipboard(view, type, len); +} + +PuglStatus +puglSetClipboard(PuglView* const view, + const char* const type, + const void* const data, + const size_t len) +{ + PuglInternals* const impl = view->impl; + + PuglStatus st = puglSetInternalClipboard(view, type, data, len); + if (st) { + return st; + } else if (!OpenClipboard(impl->hwnd)) { + return PUGL_UNKNOWN_ERROR; + } + + // Measure string and allocate global memory for clipboard + const char* str = (const char*)data; + const int wlen = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); + HGLOBAL mem = GlobalAlloc(GMEM_MOVEABLE, (wlen + 1) * sizeof(wchar_t)); + if (!mem) { + CloseClipboard(); + return PUGL_UNKNOWN_ERROR; + } + + // Lock global memory + wchar_t* wstr = (wchar_t*)GlobalLock(mem); + if (!wstr) { + GlobalFree(mem); + CloseClipboard(); + return PUGL_UNKNOWN_ERROR; + } + + // Convert string into global memory and set it as clipboard data + MultiByteToWideChar(CP_UTF8, 0, str, (int)len, wstr, wlen); + wstr[wlen] = 0; + GlobalUnlock(mem); + SetClipboardData(CF_UNICODETEXT, mem); + CloseClipboard(); + return PUGL_SUCCESS; +} + +static const char* const cursor_ids[] = { + IDC_ARROW, // ARROW + IDC_IBEAM, // CARET + IDC_CROSS, // CROSSHAIR + IDC_HAND, // HAND + IDC_NO, // NO + IDC_SIZEWE, // LEFT_RIGHT + IDC_SIZENS, // UP_DOWN +}; + +PuglStatus +puglSetCursor(PuglView* view, PuglCursor cursor) +{ + PuglInternals* const impl = view->impl; + const unsigned index = (unsigned)cursor; + const unsigned count = sizeof(cursor_ids) / sizeof(cursor_ids[0]); + + if (index >= count) { + return PUGL_BAD_PARAMETER; + } + + const HCURSOR cur = LoadCursor(NULL, cursor_ids[index]); + if (!cur) { + return PUGL_FAILURE; + } + + impl->cursor = cur; + if (impl->mouseTracked) { + SetCursor(cur); + } + + return PUGL_SUCCESS; +} |