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/**************************************************************************
*
* Copyright 2011 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
/**
* Minimal Cocoa integration.
*
* See also:
* - http://developer.apple.com/library/mac/#samplecode/CocoaGL/Introduction/Intro.html
* - http://developer.apple.com/library/mac/#samplecode/Cocoa_With_Carbon_or_CPP/Introduction/Intro.html
* - http://developer.apple.com/library/mac/#samplecode/glut/Introduction/Intro.html
* - http://developer.apple.com/library/mac/#samplecode/GLEssentials/Introduction/Intro.html
* - http://www.glfw.org/
*/
#include <stdlib.h>
#include <iostream>
#include <Cocoa/Cocoa.h>
#include "glws.hpp"
namespace glws {
NSAutoreleasePool *autoreleasePool = nil;
class CocoaVisual : public Visual
{
public:
NSOpenGLPixelFormat *pixelFormat;
CocoaVisual(NSOpenGLPixelFormat *pf) :
pixelFormat(pf)
{}
~CocoaVisual() {
[pixelFormat release];
}
};
class CocoaDrawable : public Drawable
{
public:
NSWindow *window;
NSOpenGLContext *currentContext;
CocoaDrawable(const Visual *vis, int w, int h) :
Drawable(vis, w, h),
currentContext(nil)
{
NSOpenGLPixelFormat *pixelFormat = static_cast<const CocoaVisual *>(visual)->pixelFormat;
NSRect winRect = NSMakeRect(0, 0, w, h);
window = [[NSWindow alloc]
initWithContentRect:winRect
styleMask:NSTitledWindowMask |
NSClosableWindowMask |
NSMiniaturizableWindowMask
backing:NSBackingStoreRetained
defer:NO];
assert(window != nil);
NSOpenGLView *view = [[NSOpenGLView alloc]
initWithFrame:winRect
pixelFormat:pixelFormat];
assert(view != nil);
[window setContentView:view];
[window setTitle:@"glretrace"];
}
~CocoaDrawable() {
[window release];
}
void
resize(int w, int h) {
if (w == width && h == height) {
return;
}
[window setContentSize:NSMakeSize(w, h)];
if (currentContext != nil) {
[currentContext update];
[window makeKeyAndOrderFront:nil];
[currentContext setView:[window contentView]];
[currentContext makeCurrentContext];
}
Drawable::resize(w, h);
}
void show(void) {
if (visible) {
return;
}
// TODO
Drawable::show();
}
void swapBuffers(void) {
if (currentContext != nil) {
[currentContext flushBuffer];
}
}
};
class CocoaContext : public Context
{
public:
NSOpenGLContext *context;
CocoaContext(const Visual *vis, Profile prof, NSOpenGLContext *ctx) :
Context(vis, prof),
context(ctx)
{}
~CocoaContext() {
[context release];
}
};
void
init(void) {
[NSApplication sharedApplication];
autoreleasePool = [[NSAutoreleasePool alloc] init];
[NSApp finishLaunching];
}
void
cleanup(void) {
[autoreleasePool release];
}
Visual *
createVisual(bool doubleBuffer, Profile profile) {
if (profile != PROFILE_COMPAT &&
profile != PROFILE_CORE) {
return nil;
}
Attributes<NSOpenGLPixelFormatAttribute> attribs;
attribs.add(NSOpenGLPFAAlphaSize, (NSOpenGLPixelFormatAttribute)1);
attribs.add(NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute)24);
if (doubleBuffer) {
attribs.add(NSOpenGLPFADoubleBuffer);
}
attribs.add(NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute)1);
attribs.add(NSOpenGLPFAStencilSize, (NSOpenGLPixelFormatAttribute)1);
if (profile == PROFILE_CORE) {
#if CGL_VERSION_1_3
attribs.add(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core);
#else
return NULL;
#endif
}
attribs.end();
NSOpenGLPixelFormat *pixelFormat = [[NSOpenGLPixelFormat alloc]
initWithAttributes:attribs];
return new CocoaVisual(pixelFormat);
}
Drawable *
createDrawable(const Visual *visual, int width, int height)
{
return new CocoaDrawable(visual, width, height);
}
Context *
createContext(const Visual *visual, Context *shareContext, Profile profile, bool debug)
{
NSOpenGLPixelFormat *pixelFormat = static_cast<const CocoaVisual *>(visual)->pixelFormat;
NSOpenGLContext *share_context = nil;
NSOpenGLContext *context;
if (profile != PROFILE_COMPAT &&
profile != PROFILE_CORE) {
return nil;
}
if (shareContext) {
share_context = static_cast<CocoaContext*>(shareContext)->context;
}
context = [[NSOpenGLContext alloc]
initWithFormat:pixelFormat
shareContext:share_context];
assert(context != nil);
return new CocoaContext(visual, profile, context);
}
bool
makeCurrent(Drawable *drawable, Context *context)
{
if (!drawable || !context) {
[NSOpenGLContext clearCurrentContext];
} else {
CocoaDrawable *cocoaDrawable = static_cast<CocoaDrawable *>(drawable);
CocoaContext *cocoaContext = static_cast<CocoaContext *>(context);
[cocoaDrawable->window makeKeyAndOrderFront:nil];
[cocoaContext->context setView:[cocoaDrawable->window contentView]];
[cocoaContext->context makeCurrentContext];
cocoaDrawable->currentContext = cocoaContext->context;
}
return TRUE;
}
bool
processEvents(void) {
NSEvent* event;
do {
event = [NSApp nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate distantPast]
inMode:NSDefaultRunLoopMode
dequeue:YES];
if (event)
[NSApp sendEvent:event];
} while (event);
return true;
}
} /* namespace glws */
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