Move implementation source files to a conventional src directory

I think this attempt to be optionally header-only was misguided, particularly
installing source code to the system include path.  Typically anyone vendoring
code just includes the repository and builds from there anyway.

This commit moves all the implementation code to a typical src directory (Don't
Be Weird).

I still think there is some value in simple "inline" deployment, but that would
be better achieved another way, like producing a single-file amalgamation that
builds anywhere, ala sqlite.

1 files changed, 203 insertions, 0 deletions

diff --git a/src/mac_gl.m b/src/mac_gl.m
new file mode 100644
index 0000000..038b942
--- /dev/null
+++ b/src/mac_gl.m
@@ -0,0 +1,203 @@
+/*
+  Copyright 2019-2020 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 mac_gl.m
+   @brief OpenGL graphics backend for MacOS.
+*/
+
+#include "implementation.h"
+#include "mac.h"
+#include "stub.h"
+
+#include "pugl/pugl_gl.h"
+
+#ifndef __MAC_10_10
+#    define NSOpenGLProfileVersion4_1Core NSOpenGLProfileVersion3_2Core
+#endif
+
+@interface PuglOpenGLView : NSOpenGLView
+@end
+
+@implementation PuglOpenGLView
+{
+@public
+	PuglView* puglview;
+}
+
+- (id)initWithFrame:(NSRect)frame
+{
+	const bool     compat  = puglview->hints[PUGL_USE_COMPAT_PROFILE];
+	const unsigned samples = (unsigned)puglview->hints[PUGL_SAMPLES];
+	const int      major   = puglview->hints[PUGL_CONTEXT_VERSION_MAJOR];
+	const unsigned profile = ((compat || major < 3)
+	                              ? NSOpenGLProfileVersionLegacy
+	                              : (major >= 4
+	                                     ? NSOpenGLProfileVersion4_1Core
+	                                     : NSOpenGLProfileVersion3_2Core));
+
+	// Set attributes to default if they are unset
+	// (There is no GLX_DONT_CARE equivalent on MacOS)
+	if (puglview->hints[PUGL_DEPTH_BITS] == PUGL_DONT_CARE) {
+		puglview->hints[PUGL_DEPTH_BITS] = 0;
+	}
+	if (puglview->hints[PUGL_STENCIL_BITS] == PUGL_DONT_CARE) {
+		puglview->hints[PUGL_STENCIL_BITS] = 0;
+	}
+	if (puglview->hints[PUGL_SAMPLES] == PUGL_DONT_CARE) {
+		puglview->hints[PUGL_SAMPLES] = 1;
+	}
+	if (puglview->hints[PUGL_DOUBLE_BUFFER] == PUGL_DONT_CARE) {
+		puglview->hints[PUGL_DOUBLE_BUFFER] = 1;
+	}
+	if (puglview->hints[PUGL_SWAP_INTERVAL] == PUGL_DONT_CARE) {
+		puglview->hints[PUGL_SWAP_INTERVAL] = 1;
+	}
+
+	const unsigned colorSize = (unsigned)(puglview->hints[PUGL_RED_BITS] +
+	                                      puglview->hints[PUGL_BLUE_BITS] +
+	                                      puglview->hints[PUGL_GREEN_BITS] +
+	                                      puglview->hints[PUGL_ALPHA_BITS]);
+
+	NSOpenGLPixelFormatAttribute pixelAttribs[17] = {
+		NSOpenGLPFADoubleBuffer,
+		NSOpenGLPFAAccelerated,
+		NSOpenGLPFAOpenGLProfile, profile,
+		NSOpenGLPFAColorSize,     colorSize,
+		NSOpenGLPFADepthSize,     (unsigned)puglview->hints[PUGL_DEPTH_BITS],
+		NSOpenGLPFAStencilSize,   (unsigned)puglview->hints[PUGL_STENCIL_BITS],
+		NSOpenGLPFAMultisample,   samples ? 1 : 0,
+		NSOpenGLPFASampleBuffers, samples ? 1 : 0,
+		NSOpenGLPFASamples,       samples,
+		0};
+
+	NSOpenGLPixelFormat* pixelFormat = [
+		[NSOpenGLPixelFormat alloc] initWithAttributes:pixelAttribs];
+
+	if (pixelFormat) {
+		self = [super initWithFrame:frame pixelFormat:pixelFormat];
+		[pixelFormat release];
+	} else {
+		self = [super initWithFrame:frame];
+	}
+
+	[self setWantsBestResolutionOpenGLSurface:YES];
+
+	if (self) {
+		[[self openGLContext] makeCurrentContext];
+		[self reshape];
+	}
+	return self;
+}
+
+- (void)reshape
+{
+	PuglWrapperView* wrapper = (PuglWrapperView*)[self superview];
+
+	[super reshape];
+	[wrapper setReshaped];
+}
+
+- (void)drawRect:(NSRect)rect
+{
+	PuglWrapperView* wrapper = (PuglWrapperView*)[self superview];
+	[wrapper dispatchExpose:rect];
+}
+
+@end
+
+static PuglStatus
+puglMacGlCreate(PuglView* view)
+{
+	PuglInternals*  impl     = view->impl;
+	PuglOpenGLView* drawView = [PuglOpenGLView alloc];
+
+	drawView->puglview = view;
+	[drawView initWithFrame:[impl->wrapperView bounds]];
+	if (view->hints[PUGL_RESIZABLE]) {
+		[drawView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
+	} else {
+		[drawView setAutoresizingMask:NSViewNotSizable];
+	}
+
+	impl->drawView = drawView;
+	return PUGL_SUCCESS;
+}
+
+static PuglStatus
+puglMacGlDestroy(PuglView* view)
+{
+	PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView;
+
+	[drawView removeFromSuperview];
+	[drawView release];
+
+	view->impl->drawView = nil;
+	return PUGL_SUCCESS;
+}
+
+static PuglStatus
+puglMacGlEnter(PuglView* view, const PuglEventExpose* PUGL_UNUSED(expose))
+{
+	PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView;
+
+	[[drawView openGLContext] makeCurrentContext];
+	return PUGL_SUCCESS;
+}
+
+static PuglStatus
+puglMacGlLeave(PuglView* view, const PuglEventExpose* expose)
+{
+	PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView;
+
+	if (expose) {
+		[[drawView openGLContext] flushBuffer];
+	}
+
+	[NSOpenGLContext clearCurrentContext];
+
+	return PUGL_SUCCESS;
+}
+
+PuglGlFunc
+puglGetProcAddress(const char *name)
+{
+	CFBundleRef framework =
+		CFBundleGetBundleWithIdentifier(CFSTR("com.apple.opengl"));
+
+	CFStringRef symbol = CFStringCreateWithCString(
+		kCFAllocatorDefault, name, kCFStringEncodingASCII);
+
+	PuglGlFunc func = (PuglGlFunc)CFBundleGetFunctionPointerForName(
+		framework, symbol);
+
+	CFRelease(symbol);
+
+	return func;
+}
+
+const PuglBackend*
+puglGlBackend(void)
+{
+	static const PuglBackend backend = {puglStubConfigure,
+	                                    puglMacGlCreate,
+	                                    puglMacGlDestroy,
+	                                    puglMacGlEnter,
+	                                    puglMacGlLeave,
+	                                    puglStubGetContext};
+
+	return &backend;
+}