(svn r11498) -Add [FS#1411]: [OSX] Added support for using Quartz instead of Quickdraw in windowed mode on OS X 10.4 and higher. Based on a patch by blackis.

4 files changed, 823 insertions, 9 deletions

diff --git a/src/video/cocoa/cocoa_v.h b/src/video/cocoa/cocoa_v.h
index fb53fb2ee..0fdc48645 100644
--- a/src/video/cocoa/cocoa_v.h
+++ b/src/video/cocoa/cocoa_v.h
@@ -59,6 +59,7 @@ public:
 extern CocoaSubdriver* _cocoa_subdriver;
 
 CocoaSubdriver *QZ_CreateFullscreenSubdriver(int width, int height, int bpp);
+CocoaSubdriver *QZ_CreateWindowQuartzSubdriver(int width, int height, int bpp);
 CocoaSubdriver *QZ_CreateWindowQuickdrawSubdriver(int width, int height, int bpp);
 
 void QZ_GameSizeChanged();
diff --git a/src/video/cocoa/cocoa_v.mm b/src/video/cocoa/cocoa_v.mm
index 7e09b3d7d..c875bd5a3 100644
--- a/src/video/cocoa/cocoa_v.mm
+++ b/src/video/cocoa/cocoa_v.mm
@@ -233,7 +233,12 @@ void QZ_GameSizeChanged()
 
 static CocoaSubdriver *QZ_CreateWindowSubdriver(int width, int height, int bpp)
 {
-	// For now there is only the quickdraw window mode subdriver, but a pure quartz one should be added.
+	long sysVersion;
+
+	if (Gestalt(gestaltSystemVersion, &sysVersion) == noErr && sysVersion >= 0x1040) {
+		return QZ_CreateWindowQuartzSubdriver(width, height, bpp);
+	}
+
 	return QZ_CreateWindowQuickdrawSubdriver(width, height, bpp);
 }
 
diff --git a/src/video/cocoa/wnd_quartz.mm b/src/video/cocoa/wnd_quartz.mm
new file mode 100644
index 000000000..28603d8e4
--- /dev/null
+++ b/src/video/cocoa/wnd_quartz.mm
@@ -0,0 +1,803 @@
+/* $Id$ */
+
+/******************************************************************************
+ *                             Cocoa video driver                             *
+ * Known things left to do:                                                   *
+ *  List available resolutions.                                               *
+ ******************************************************************************/
+
+#ifdef WITH_COCOA
+
+#include <AvailabilityMacros.h>
+
+#import <Cocoa/Cocoa.h>
+#import <sys/time.h> /* gettimeofday */
+#import <sys/param.h> /* for MAXPATHLEN */
+#import <unistd.h>
+
+/**
+ * Important notice regarding all modifications!!!!!!!
+ * There are certain limitations because the file is objective C++.
+ * gdb has limitations.
+ * C++ and objective C code can't be joined in all cases (classes stuff).
+ * Read http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html for more information.
+ */
+
+
+/* Defined in stdbool.h */
+#ifndef __cplusplus
+# ifndef __BEOS__
+#  undef bool
+#  undef false
+#  undef true
+# endif
+#endif
+
+
+#include "../../stdafx.h"
+#include "../../openttd.h"
+#include "../../debug.h"
+#include "../../macros.h"
+#include "../../os/macosx/splash.h"
+#include "../../variables.h"
+#include "../../gfx.h"
+#include "cocoa_v.h"
+#include "cocoa_keys.h"
+#include "../../blitter/factory.hpp"
+#include "../../fileio.h"
+
+#undef Point
+#undef Rect
+
+
+class WindowQuartzSubdriver;
+
+
+/* Subclass of NSWindow to fix genie effect and support resize events  */
+@interface OTTD_QuartzWindow : NSWindow {
+	WindowQuartzSubdriver *driver;
+}
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv;
+
+- (void)miniaturize:(id)sender;
+- (void)display;
+- (void)setFrame:(NSRect)frameRect display:(BOOL)flag;
+- (void)appDidHide:(NSNotification*)note;
+- (void)appWillUnhide:(NSNotification*)note;
+- (void)appDidUnhide:(NSNotification*)note;
+- (id)initWithContentRect:(NSRect)contentRect styleMask:(unsigned int)styleMask backing:(NSBackingStoreType)backingType defer:(BOOL)flag;
+@end
+
+/* Delegate for our NSWindow to send ask for quit on close */
+@interface OTTD_QuartzWindowDelegate : NSObject{
+	WindowQuartzSubdriver *driver;
+}
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv;
+
+- (BOOL)windowShouldClose:(id)sender;
+@end
+
+/* Subclass of NSView to fix Quartz rendering */
+@interface OTTD_QuartzView : NSView {
+	WindowQuartzSubdriver *driver;
+}
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv;
+
+- (void)drawRect:(NSRect)rect;
+- (BOOL)isOpaque;
+@end
+
+class WindowQuartzSubdriver: public CocoaSubdriver {
+	int device_width;
+	int device_height;
+
+	int window_width;
+	int window_height;
+
+	int buffer_depth;
+
+	void* pixel_buffer;
+	void* image_buffer;
+
+	OTTD_QuartzWindow *window;
+
+	#define MAX_DIRTY_RECTS 100
+	Rect dirty_rects[MAX_DIRTY_RECTS];
+	int num_dirty_rects;
+
+	uint32 palette[256];
+
+public:
+	bool active;
+	bool setup;
+
+	OTTD_QuartzView* qzview;
+	CGContextRef 	 cgcontext;
+
+private:
+	void GetDeviceInfo();
+
+	bool SetVideoMode(int width, int height);
+
+	/**
+	 * This function copies 8bpp pixels from the screen buffer in 32bpp windowed mode.
+	 *
+	 * @param left The x coord for the left edge of the box to blit.
+	 * @param top The y coord for the top edge of the box to blit.
+	 * @param right The x coord for the right edge of the box to blit.
+	 * @param bottom The y coord for the bottom edge of the box to blit.
+	 */
+	void BlitIndexedToView32(int left, int top, int right, int bottom);
+
+public:
+	WindowQuartzSubdriver(int bpp);
+	virtual ~WindowQuartzSubdriver();
+
+	virtual void Draw();
+	virtual void MakeDirty(int left, int top, int width, int height);
+	virtual void UpdatePalette(uint first_color, uint num_colors);
+
+	virtual uint ListModes(OTTDPoint* modes, uint max_modes);
+
+	virtual bool ChangeResolution(int w, int h);
+
+	virtual bool IsFullscreen() { return false; }
+
+	virtual int GetWidth() { return window_width; }
+	virtual int GetHeight() { return window_height; }
+	virtual void *GetPixelBuffer() { return buffer_depth == 8 ? pixel_buffer : image_buffer; }
+
+	/* Convert local coordinate to window server (CoreGraphics) coordinate */
+	virtual CGPoint PrivateLocalToCG(NSPoint* p);
+
+	virtual NSPoint GetMouseLocation(NSEvent *event);
+	virtual bool MouseIsInsideView(NSPoint *pt);
+
+	virtual bool IsActive() { return active; }
+
+
+	void SetPortAlphaOpaque();
+	bool WindowResized();
+};
+
+
+static CGColorSpaceRef QZ_GetCorrectColorSpace()
+{
+	static CGColorSpaceRef colorSpace = NULL;
+
+	if (colorSpace == NULL)
+	{
+		CMProfileRef sysProfile;
+
+		if (CMGetSystemProfile(&sysProfile) == noErr)
+		{
+			colorSpace = CGColorSpaceCreateWithPlatformColorSpace(sysProfile);
+			CMCloseProfile(sysProfile);
+		}
+
+		assert(colorSpace != NULL);
+	}
+
+	return colorSpace;
+}
+
+
+@implementation OTTD_QuartzWindow
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv
+{
+	driver = drv;
+}
+
+
+/* we override these methods to fix the miniaturize animation/dock icon bug */
+- (void)miniaturize:(id)sender
+{
+	/* make the alpha channel opaque so anim won't have holes in it */
+	driver->SetPortAlphaOpaque ();
+
+	/* window is hidden now */
+	driver->active = false;
+
+	QZ_ShowMouse();
+
+	[ super miniaturize:sender ];
+}
+
+- (void)display
+{
+	/* This method fires just before the window deminaturizes from the Dock.
+	 * We'll save the current visible surface, let the window manager redraw any
+	 * UI elements, and restore the surface. This way, no expose event
+	 * is required, and the deminiaturize works perfectly.
+	 */
+
+	driver->SetPortAlphaOpaque();
+
+	/* save current visible surface */
+	[ self cacheImageInRect:[ driver->qzview frame ] ];
+
+	/* let the window manager redraw controls, border, etc */
+	[ super display ];
+
+	/* restore visible surface */
+	[ self restoreCachedImage ];
+
+	/* window is visible again */
+	driver->active = true;
+}
+
+- (void)setFrame:(NSRect)frameRect display:(BOOL)flag
+{
+	[ super setFrame:frameRect display:flag ];
+
+	/* Don't do anything if the window is currently being created */
+	if (driver->setup) return;
+
+	if (!driver->WindowResized())
+		error("Cocoa: Failed to resize window.");
+}
+
+- (void)appDidHide:(NSNotification*)note
+{
+	driver->active = false;
+}
+
+
+- (void)appWillUnhide:(NSNotification*)note
+{
+	driver->SetPortAlphaOpaque ();
+
+	/* save current visible surface */
+	[ self cacheImageInRect:[ driver->qzview frame ] ];
+}
+
+- (void)appDidUnhide:(NSNotification*)note
+{
+	/* restore cached image, since it may not be current, post expose event too */
+	[ self restoreCachedImage ];
+
+	driver->active = true;
+}
+
+
+- (id)initWithContentRect:(NSRect)contentRect styleMask:(unsigned int)styleMask backing:(NSBackingStoreType)backingType defer:(BOOL)flag
+{
+	/* Make our window subclass receive these application notifications */
+	[ [ NSNotificationCenter defaultCenter ] addObserver:self
+	selector:@selector(appDidHide:) name:NSApplicationDidHideNotification object:NSApp ];
+
+	[ [ NSNotificationCenter defaultCenter ] addObserver:self
+	selector:@selector(appDidUnhide:) name:NSApplicationDidUnhideNotification object:NSApp ];
+
+	[ [ NSNotificationCenter defaultCenter ] addObserver:self
+	selector:@selector(appWillUnhide:) name:NSApplicationWillUnhideNotification object:NSApp ];
+
+	return [ super initWithContentRect:contentRect styleMask:styleMask backing:backingType defer:flag ];
+}
+
+@end
+
+@implementation OTTD_QuartzWindowDelegate
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv
+{
+	driver = drv;
+}
+
+- (BOOL)windowShouldClose:(id)sender
+{
+	HandleExitGameRequest();
+
+	return NO;
+}
+
+- (void)windowDidBecomeKey:(NSNotification*)aNotification
+{
+	driver->active = true;
+}
+
+- (void)windowDidResignKey:(NSNotification*)aNotification
+{
+	driver->active = false;
+}
+
+- (void)windowDidBecomeMain:(NSNotification*)aNotification
+{
+	driver->active = true;
+}
+
+- (void)windowDidResignMain:(NSNotification*)aNotification
+{
+	driver->active = false;
+}
+
+@end
+
+@implementation OTTD_QuartzView
+
+- (void)setDriver:(WindowQuartzSubdriver*)drv
+{
+	driver = drv;
+}
+
+
+- (BOOL)isOpaque
+{
+	return YES;
+}
+
+- (void)drawRect:(NSRect)invalidRect
+{
+	CGImageRef    fullImage;
+	CGImageRef    clippedImage;
+	NSRect        rect;
+	const NSRect* dirtyRects;
+	int           dirtyRectCount;
+	int           n;
+	CGRect        clipRect;
+	CGRect        blitRect;
+	uint32        blitArea       = 0;
+	NSRect        frameRect      = [ self frame ];
+	CGContextRef  viewContext    = (CGContextRef)[ [ NSGraphicsContext currentContext ] graphicsPort ];
+
+	if (driver->cgcontext == NULL) return;
+
+	CGContextSetShouldAntialias(viewContext, FALSE);
+	CGContextSetInterpolationQuality(viewContext, kCGInterpolationNone);
+
+	/* The obtained 'rect' is actually a union of all dirty rects, let's ask for an explicit list of rects instead */
+	[ self getRectsBeingDrawn:&dirtyRects count:&dirtyRectCount ];
+
+	/* We need an Image in order to do blitting, but as we don't touch the context between this call and drawing no copying will actually be done here */
+	fullImage = CGBitmapContextCreateImage(driver->cgcontext);
+
+	/* Calculate total area we are blitting */
+	for (n = 0; n < dirtyRectCount; n++) {
+		blitArea += dirtyRects[n].size.width * dirtyRects[n].size.height;
+ 	}
+
+	/*
+	 * This might be completely stupid, but in my extremely subjective opinion it feels faster
+	 * The point is, if we're blitting less than 50% of the dirty rect union then it's still a good idea to blit each dirty
+	 * rect separately but if we blit more than that, it's just cheaper to blit the entire union in one pass.
+	 * Feel free to remove or find an even better value than 50% ... / blackis
+	 */
+	if (blitArea / (float)(invalidRect.size.width * invalidRect.size.height) > 0.5f) {
+		rect = invalidRect;
+
+		blitRect.origin.x = rect.origin.x;
+		blitRect.origin.y = rect.origin.y;
+		blitRect.size.width = rect.size.width;
+		blitRect.size.height = rect.size.height;
+
+		clipRect.origin.x = rect.origin.x;
+		clipRect.origin.y = frameRect.size.height - rect.origin.y - rect.size.height;
+
+		clipRect.size.width = rect.size.width;
+		clipRect.size.height = rect.size.height;
+
+		/* Blit dirty part of image */
+		clippedImage = CGImageCreateWithImageInRect(fullImage, clipRect);
+		CGContextDrawImage(viewContext, blitRect, clippedImage);
+		CGImageRelease(clippedImage);
+	} else {
+		for (n = 0; n < dirtyRectCount; n++) {
+			rect = dirtyRects[n];
+
+			blitRect.origin.x = rect.origin.x;
+			blitRect.origin.y = rect.origin.y;
+			blitRect.size.width = rect.size.width;
+			blitRect.size.height = rect.size.height;
+
+			clipRect.origin.x = rect.origin.x;
+			clipRect.origin.y = frameRect.size.height - rect.origin.y - rect.size.height;
+
+			clipRect.size.width = rect.size.width;
+			clipRect.size.height = rect.size.height;
+
+			/* Blit dirty part of image */
+			clippedImage = CGImageCreateWithImageInRect(fullImage, clipRect);
+			CGContextDrawImage(viewContext, blitRect, clippedImage);
+			CGImageRelease(clippedImage);
+ 		}
+ 	}
+
+	CGImageRelease(fullImage);
+}
+
+@end
+
+
+extern const char _openttd_revision[];
+
+
+void WindowQuartzSubdriver::GetDeviceInfo()
+{
+	CFDictionaryRef    cur_mode;
+
+	/* Initialize the video settings; this data persists between mode switches */
+	cur_mode = CGDisplayCurrentMode(kCGDirectMainDisplay);
+
+	/* Gather some information that is useful to know about the display */
+	CFNumberGetValue(
+		(const __CFNumber*)CFDictionaryGetValue(cur_mode, kCGDisplayWidth),
+		kCFNumberSInt32Type, &device_width
+	);
+
+	CFNumberGetValue(
+		(const __CFNumber*)CFDictionaryGetValue(cur_mode, kCGDisplayHeight),
+		kCFNumberSInt32Type, &device_height
+	);
+}
+
+bool WindowQuartzSubdriver::SetVideoMode(int width, int height)
+{
+	char caption[50];
+	NSString *nsscaption;
+	unsigned int style;
+	NSRect contentRect;
+	BOOL isCustom = NO;
+	bool ret;
+
+	setup = true;
+
+	GetDeviceInfo();
+
+	if (width > device_width)
+		width = device_width;
+	if (height > device_height)
+		height = device_height;
+
+	contentRect = NSMakeRect(0, 0, width, height);
+
+	/* Check if we should recreate the window */
+	if (window == nil) {
+		OTTD_QuartzWindowDelegate *delegate;
+
+		/* Set the window style */
+		style = NSTitledWindowMask;
+		style |= (NSMiniaturizableWindowMask | NSClosableWindowMask);
+		style |= NSResizableWindowMask;
+
+		/* Manually create a window, avoids having a nib file resource */
+		window = [ [ OTTD_QuartzWindow alloc ]
+						initWithContentRect: contentRect
+						styleMask: style
+						backing: NSBackingStoreBuffered
+						defer: NO ];
+
+		if (window == nil) {
+			DEBUG(driver, 0, "Could not create the Cocoa window.");
+			setup = false;
+			return false;
+		}
+
+		[ window setDriver:this ];
+
+		snprintf(caption, sizeof(caption), "OpenTTD %s", _openttd_revision);
+		nsscaption = [ [ NSString alloc ] initWithCString:caption ];
+		[ window setTitle: nsscaption ];
+		[ window setMiniwindowTitle: nsscaption ];
+		[ nsscaption release ];
+
+		[ window setAcceptsMouseMovedEvents: YES ];
+		[ window setViewsNeedDisplay: NO ];
+
+		[ window useOptimizedDrawing: YES ];
+
+		delegate = [ [ OTTD_QuartzWindowDelegate alloc ] init ];
+		[ delegate setDriver: this ];
+		[ window setDelegate: [ delegate autorelease ] ];
+	} else {
+		/* We already have a window, just change its size */
+		if (!isCustom) {
+			[ window setContentSize: contentRect.size ];
+
+			// Ensure frame height - title bar height >= view height
+			contentRect.size.height = Clamp(height, 0, [ window frame ].size.height - 22 /* 22 is the height of title bar of window*/);
+
+			if (qzview != nil) {
+				height = contentRect.size.height;
+				[ qzview setFrameSize: contentRect.size ];
+			}
+		}
+	}
+
+	window_width = width;
+	window_height = height;
+
+	[ window center ];
+
+	/* Only recreate the view if it doesn't already exist */
+	if (qzview == nil) {
+		qzview = [ [ OTTD_QuartzView alloc ] initWithFrame: contentRect ];
+		if (qzview == nil) {
+			DEBUG(driver, 0, "Could not create the Quickdraw view.");
+			setup = false;
+			return false;
+		}
+
+		[ qzview setDriver: this ];
+
+		[ qzview setAutoresizingMask: NSViewWidthSizable | NSViewHeightSizable ];
+		[ window setContentView: qzview ];
+		[ qzview release ];
+		[ window makeKeyAndOrderFront:nil ];
+	}
+
+	ret = WindowResized();
+
+	UpdatePalette(0, 256);
+
+	setup = false;
+
+	return ret;
+}
+
+void WindowQuartzSubdriver::BlitIndexedToView32(int left, int top, int right, int bottom)
+{
+	const uint32* pal   = palette;
+	const uint8*  src   = (uint8*)pixel_buffer;
+	uint32*       dst   = (uint32*)image_buffer;
+	uint          width = window_width;
+	uint          pitch = window_width;
+	int x;
+	int y;
+
+	for (y = top; y < bottom; y++) {
+		for (x = left; x < right; x++) {
+			dst[y * pitch + x] = pal[src[y * width + x]];
+		}
+	}
+}
+
+
+WindowQuartzSubdriver::WindowQuartzSubdriver(int bpp)
+{
+	window_width  = 0;
+	window_height = 0;
+	buffer_depth  = bpp;
+	image_buffer  = NULL;
+	pixel_buffer  = NULL;
+	active        = false;
+	setup         = false;
+
+	window = nil;
+	qzview = nil;
+
+	cgcontext = NULL;
+
+	num_dirty_rects = MAX_DIRTY_RECTS;
+}
+
+WindowQuartzSubdriver::~WindowQuartzSubdriver()
+{
+	QZ_ShowMouse();
+
+	/* Release window mode resources */
+	if (window != nil) [ window close ];
+
+	CGContextRelease(cgcontext);
+
+	free(image_buffer);
+	free(pixel_buffer);
+}
+
+void WindowQuartzSubdriver::Draw()
+{
+	int i;
+	NSRect dirtyrect;
+
+	/* Check if we need to do anything */
+	if (num_dirty_rects == 0 ||
+		[ window isMiniaturized ]) {
+		return;
+	}
+
+	if (num_dirty_rects >= MAX_DIRTY_RECTS) {
+		num_dirty_rects = 1;
+		dirty_rects[0].left = 0;
+		dirty_rects[0].top = 0;
+		dirty_rects[0].right = window_width;
+		dirty_rects[0].bottom = window_height;
+	}
+
+	/* Build the region of dirty rectangles */
+	for (i = 0; i < num_dirty_rects; i++) {
+		/* We only need to blit in indexed mode since in 32bpp mode the game draws directly to the image. */
+		if(buffer_depth == 8) {
+			BlitIndexedToView32(
+				dirty_rects[i].left,
+				dirty_rects[i].top,
+				dirty_rects[i].right,
+				dirty_rects[i].bottom
+			);
+		}
+
+		dirtyrect.origin.x = dirty_rects[i].left;
+		dirtyrect.origin.y = window_height - dirty_rects[i].bottom;
+		dirtyrect.size.width = dirty_rects[i].right - dirty_rects[i].left;
+		dirtyrect.size.height = dirty_rects[i].bottom - dirty_rects[i].top;
+
+		/* drawRect will be automatically called by Mac OS X during next update cycle, and then blitting will occur */
+		[ qzview setNeedsDisplayInRect: dirtyrect ];
+	}
+
+	//DrawResizeIcon();
+
+	num_dirty_rects = 0;
+}
+
+void WindowQuartzSubdriver::MakeDirty(int left, int top, int width, int height)
+{
+	if (num_dirty_rects < MAX_DIRTY_RECTS) {
+		dirty_rects[num_dirty_rects].left = left;
+		dirty_rects[num_dirty_rects].top = top;
+		dirty_rects[num_dirty_rects].right = left + width;
+		dirty_rects[num_dirty_rects].bottom = top + height;
+	}
+	num_dirty_rects++;
+}
+
+void WindowQuartzSubdriver::UpdatePalette(uint first_color, uint num_colors)
+{
+	uint i;
+
+	if (buffer_depth != 8)
+		return;
+
+	for (i = first_color; i < first_color + num_colors; i++) {
+		uint32 clr = 0xff000000;
+		clr |= (uint32)_cur_palette[i].r << 16;
+		clr |= (uint32)_cur_palette[i].g << 8;
+		clr |= (uint32)_cur_palette[i].b;
+		palette[i] = clr;
+	}
+
+	num_dirty_rects = MAX_DIRTY_RECTS;
+}
+
+uint WindowQuartzSubdriver::ListModes(OTTDPoint* modes, uint max_modes)
+{
+	if (max_modes == 0) return 0;
+
+	modes[0].x = window_width;
+	modes[0].y = window_height;
+
+	return 1;
+}
+
+bool WindowQuartzSubdriver::ChangeResolution(int w, int h)
+{
+	int old_width  = window_width;
+	int old_height = window_height;
+
+	if (SetVideoMode(w, h))
+		return true;
+
+	if (old_width != 0 && old_height != 0)
+		SetVideoMode(old_width, old_height);
+
+	return false;
+}
+
+/* Convert local coordinate to window server (CoreGraphics) coordinate */
+CGPoint WindowQuartzSubdriver::PrivateLocalToCG(NSPoint* p)
+{
+	CGPoint cgp;
+
+	*p = [ qzview convertPoint:*p toView: nil ];
+	*p = [ window convertBaseToScreen:*p ];
+	p->y = window_height - p->y;
+
+	cgp.x = p->x;
+	cgp.y = p->y;
+
+	return cgp;
+}
+
+NSPoint WindowQuartzSubdriver::GetMouseLocation(NSEvent *event)
+{
+	NSPoint pt;
+
+	pt = [ event locationInWindow ];
+	pt = [ qzview convertPoint:pt fromView:nil ];
+
+	pt.y = window_height - pt.y;
+
+	return pt;
+}
+
+bool WindowQuartzSubdriver::MouseIsInsideView(NSPoint *pt)
+{
+	return [ qzview mouse:*pt inRect:[ qzview bounds ] ];
+}
+
+
+/* This function makes the *game region* of the window 100% opaque.
+ * The genie effect uses the alpha component. Otherwise,
+ * it doesn't seem to matter what value it has.
+ */
+void WindowQuartzSubdriver::SetPortAlphaOpaque()
+{
+	uint32* pixels = (uint32*)image_buffer;
+	uint32  pitch  = window_width;
+	int x, y;
+
+	for (y = 0; y < window_height; y++)
+		for (x = 0; x < window_width; x++) {
+		pixels[y * pitch + x] |= 0xFF000000;
+	}
+}
+
+bool WindowQuartzSubdriver::WindowResized()
+{
+	if (window == nil || qzview == nil) return true;
+
+	NSRect newframe = [ qzview frame ];
+
+	window_width = newframe.size.width;
+	window_height = newframe.size.height;
+
+	/* Create Core Graphics Context */
+	free(image_buffer);
+	image_buffer = (uint32*)malloc(window_width * window_height * 4);
+
+	CGContextRelease(cgcontext);
+	cgcontext = CGBitmapContextCreate(
+		image_buffer,              // data
+		window_width,              // width
+		window_height,             // height
+		8,                         // bits per component
+		window_width * 4,          // bytes per row
+		QZ_GetCorrectColorSpace(), // color space
+		kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Host
+	);
+
+	assert(cgcontext != NULL);
+	CGContextSetShouldAntialias(cgcontext, FALSE);
+	CGContextSetAllowsAntialiasing(cgcontext, FALSE);
+	CGContextSetInterpolationQuality(cgcontext, kCGInterpolationNone);
+
+	if (buffer_depth == 8) {
+		free(pixel_buffer);
+		pixel_buffer = malloc(window_width * window_height);
+		if (pixel_buffer == NULL) {
+			DEBUG(driver, 0, "Failed to allocate pixel buffer");
+			return false;
+		}
+	}
+
+	QZ_GameSizeChanged();
+
+	/* Redraw screen */
+	num_dirty_rects = MAX_DIRTY_RECTS;
+
+	return true;
+}
+
+
+CocoaSubdriver *QZ_CreateWindowQuartzSubdriver(int width, int height, int bpp)
+{
+	WindowQuartzSubdriver *ret;
+
+	if (bpp != 8 && bpp != 32) {
+		DEBUG(driver, 0, "The cocoa quartz subdriver only supports 8 and 32 bpp.");
+		return NULL;
+	}
+
+	ret = new WindowQuartzSubdriver(bpp);
+
+	if (!ret->ChangeResolution(width, height)) {
+		delete ret;
+		return NULL;
+	}
+
+	return ret;
+}
+
+#endif /* WITH_COCOA */
diff --git a/src/video/cocoa/wnd_quickdraw.mm b/src/video/cocoa/wnd_quickdraw.mm
index 592c41d6e..4c125ae38 100644
--- a/src/video/cocoa/wnd_quickdraw.mm
+++ b/src/video/cocoa/wnd_quickdraw.mm
@@ -54,7 +54,7 @@ class WindowQuickdrawSubdriver;
 
 
 /* Subclass of NSWindow to fix genie effect and support resize events  */
-@interface OTTD_QuartzWindow : NSWindow {
+@interface OTTD_QuickdrawWindow : NSWindow {
 	WindowQuickdrawSubdriver *driver;
 }
 
@@ -70,7 +70,7 @@ class WindowQuickdrawSubdriver;
 @end
 
 /* Delegate for our NSWindow to send ask for quit on close */
-@interface OTTD_QuartzWindowDelegate : NSObject{
+@interface OTTD_QuickdrawWindowDelegate : NSObject{
 	WindowQuickdrawSubdriver *driver;
 }
 
@@ -93,7 +93,7 @@ class WindowQuickdrawSubdriver: public CocoaSubdriver {
 	void *pixel_buffer;
 	void *window_buffer;
 
-	OTTD_QuartzWindow *window;
+	OTTD_QuickdrawWindow *window;
 
 	#define MAX_DIRTY_RECTS 100
 	Rect dirty_rects[MAX_DIRTY_RECTS];
@@ -179,7 +179,7 @@ public:
 };
 
 
-@implementation OTTD_QuartzWindow
+@implementation OTTD_QuickdrawWindow
 
 - (void)setDriver:(WindowQuickdrawSubdriver*)drv
 {
@@ -275,7 +275,7 @@ public:
 
 @end
 
-@implementation OTTD_QuartzWindowDelegate
+@implementation OTTD_QuickdrawWindowDelegate
 - (void)setDriver:(WindowQuickdrawSubdriver*)drv
 {
 	driver = drv;
@@ -390,7 +390,7 @@ bool WindowQuickdrawSubdriver::SetVideoMode(int width, int height)
 
 	/* Check if we should recreate the window */
 	if (window == nil) {
-		OTTD_QuartzWindowDelegate *delegate;
+		OTTD_QuickdrawWindowDelegate *delegate;
 
 		/* Set the window style */
 		style = NSTitledWindowMask;
@@ -398,7 +398,7 @@ bool WindowQuickdrawSubdriver::SetVideoMode(int width, int height)
 		style |= NSResizableWindowMask;
 
 		/* Manually create a window, avoids having a nib file resource */
-		window = [ [ OTTD_QuartzWindow alloc ]
+		window = [ [ OTTD_QuickdrawWindow alloc ]
 						initWithContentRect:contentRect
 						styleMask:style
 						backing:NSBackingStoreBuffered
@@ -421,7 +421,7 @@ bool WindowQuickdrawSubdriver::SetVideoMode(int width, int height)
 		[ window setAcceptsMouseMovedEvents:YES ];
 		[ window setViewsNeedDisplay:NO ];
 
-		delegate = [ [ OTTD_QuartzWindowDelegate alloc ] init ];
+		delegate = [ [ OTTD_QuickdrawWindowDelegate alloc ] init ];
 		[ delegate setDriver:this ];
 		[ window setDelegate: [ delegate autorelease ] ];
 	} else {
@@ -803,6 +803,11 @@ CocoaSubdriver *QZ_CreateWindowQuickdrawSubdriver(int width, int height, int bpp
 {
 	WindowQuickdrawSubdriver *ret;
 
+	if (bpp != 8 && bpp != 32) {
+		DEBUG(driver, 0, "The cocoa quickdraw subdriver only supports 8 and 32 bpp.");
+		return NULL;
+	}
+
 	ret = new WindowQuickdrawSubdriver(bpp);
 
 	if (!ret->ChangeResolution(width, height)) {