/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@devolution.com

*/

#include "SDL_QuartzVideo.h"

/* Some variables to share among files, put in device structure eventually */

static SDL_GrabMode currentGrabMode = SDL_GRAB_OFF;

static BOOL inForeground = YES;

static SDLKey keymap[256];

static unsigned int currentMods = 0; /* Current keyboard modifiers, to track modifier state */

/* Include files into one compile unit...break apart eventually */

#include "SDL_QuartzWM.m"

#include "SDL_QuartzEvents.m"

#include "SDL_QuartzWindow.m"

char QZ_Error[255]; /* Global error buffer to temporarily store more informative error messages */

/* Bootstrap binding, enables entry point into the driver */

VideoBootStrap QZ_bootstrap = {

"Quartz", "MacOS X CoreGraphics", QZ_Available, QZ_CreateDevice

};

/* Bootstrap functions */

static int QZ_Available () {

return 1;

}

static SDL_VideoDevice* QZ_CreateDevice (int device_index) {

#pragma unused (device_index)

SDL_VideoDevice *device;

SDL_PrivateVideoData *hidden;

device = (SDL_VideoDevice*) malloc (sizeof (*device) );

hidden = (SDL_PrivateVideoData*) malloc (sizeof (*hidden) );

if (device == NULL || hidden == NULL)

SDL_OutOfMemory ();

memset (device, 0, sizeof (*device) );

memset (hidden, 0, sizeof (*hidden) );

device->hidden = hidden;

device->VideoInit = QZ_VideoInit;

device->ListModes = QZ_ListModes;

device->SetVideoMode = QZ_SetVideoMode;

device->ToggleFullScreen = QZ_ToggleFullScreen;

device->SetColors = QZ_SetColors;

/* device->UpdateRects = QZ_UpdateRects; this is determined by SetVideoMode() */

device->VideoQuit = QZ_VideoQuit;

device->LockHWSurface = QZ_LockHWSurface;

device->UnlockHWSurface = QZ_UnlockHWSurface;

device->FreeHWSurface = QZ_FreeHWSurface;

/* device->FlipHWSurface = QZ_FlipHWSurface */;

device->SetGamma = QZ_SetGamma;

device->GetGamma = QZ_GetGamma;

device->SetGammaRamp = QZ_SetGammaRamp;

device->GetGammaRamp = QZ_GetGammaRamp;

device->GL_GetProcAddress = QZ_GL_GetProcAddress;

device->GL_GetAttribute = QZ_GL_GetAttribute;

device->GL_MakeCurrent = QZ_GL_MakeCurrent;

device->GL_SwapBuffers = QZ_GL_SwapBuffers;

device->GL_LoadLibrary = QZ_GL_LoadLibrary;

device->FreeWMCursor = QZ_FreeWMCursor;

device->CreateWMCursor = QZ_CreateWMCursor;

device->ShowWMCursor = QZ_ShowWMCursor;

device->WarpWMCursor = QZ_WarpWMCursor;

device->MoveWMCursor = QZ_MoveWMCursor;

device->CheckMouseMode = QZ_CheckMouseMode;

device->InitOSKeymap = QZ_InitOSKeymap;

device->PumpEvents = QZ_PumpEvents;

device->SetCaption = QZ_SetCaption;

device->SetIcon = QZ_SetIcon;

device->IconifyWindow = QZ_IconifyWindow;

/*device->GetWMInfo = QZ_GetWMInfo;*/

device->GrabInput = QZ_GrabInput;

device->free = QZ_DeleteDevice;

return device;

}

static void QZ_DeleteDevice (SDL_VideoDevice *device) {

free (device->hidden);

free (device);

}

static int QZ_VideoInit (_THIS, SDL_PixelFormat *video_format) {

/* Initialize the video settings; this data persists between mode switches */

display_id = kCGDirectMainDisplay;

save_mode = CGDisplayCurrentMode (display_id);

mode_list = CGDisplayAvailableModes (display_id);

palette = CGPaletteCreateDefaultColorPalette ();

/* Gather some information that is useful to know about the display */

CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayBitsPerPixel),

kCFNumberSInt32Type, &device_bpp);

CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayWidth),

kCFNumberSInt32Type, &device_width);

CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayHeight),

kCFNumberSInt32Type, &device_height);

video_format->BitsPerPixel = device_bpp;

windowTitle = @"";

return 0;

}

static SDL_Rect** QZ_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags) {

CFIndex num_modes = CFArrayGetCount (mode_list);

CFIndex i;

static SDL_Rect **list = NULL;

int list_size = 0;

/* Any windowed mode is acceptable */

if ( (flags & SDL_FULLSCREEN) == 0 )

return (SDL_Rect**)-1;

/* Free memory from previous call, if any */

if ( list != NULL ) {

int i = 0;

for (i = 0; list[i] != NULL; i++)

free (list[i]);

free (list);

list = NULL;

}

/* Build list of modes with the requested bpp */

for (i = num_modes-1; i >= 0; i--) {

CFDictionaryRef onemode = CFArrayGetValueAtIndex (mode_list, i);

CFNumberRef number;

int bpp;

number = CFDictionaryGetValue (onemode, kCGDisplayBitsPerPixel);

CFNumberGetValue (number, kCFNumberSInt32Type, &bpp);

if (bpp == format->BitsPerPixel) {

int intvalue;

SDL_Rect *rect;

int lastwidth = 0, lastheight = 0, width, height;

number = CFDictionaryGetValue (onemode, kCGDisplayWidth);

CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);

width = (Uint16) intvalue;

number = CFDictionaryGetValue (onemode, kCGDisplayHeight);

CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);

height = (Uint16) intvalue;

/* We'll get a lot of modes with the same size, so ignore them */

if ( width != lastwidth && height != lastheight ) {

lastwidth = width;

lastheight = height;

list_size++;

if ( list == NULL)

list = (SDL_Rect**) malloc (sizeof(*list) * list_size+1);

else

list = (SDL_Rect**) realloc (list, sizeof(*list) * list_size+1);

rect = (SDL_Rect*) malloc (sizeof(**list));

if (list == NULL || rect == NULL)

SDL_OutOfMemory ();

rect->w = width;

rect->h = height;

list[list_size-1] = rect;

list[list_size] = NULL;

}

}

}

return list;

}

static void QZ_UnsetVideoMode (_THIS) {

if ( mode_flags & SDL_OPENGL )

QZ_TearDownOpenGL (this);

/* Reset values that may change between switches */

this->info.blit_fill = 0;

this->FillHWRect = NULL;

this->UpdateRects = NULL;

/* Restore gamma settings */

CGDisplayRestoreColorSyncSettings ();

/* Restore original screen resolution */

if ( mode_flags & SDL_FULLSCREEN ) {

CGDisplaySwitchToMode (display_id, save_mode);

CGDisplayRelease (display_id);

}

/* Release window mode data structures */

else {

if ( (mode_flags & SDL_OPENGL) == 0 ) {

UnlockPortBits ( [ windowView qdPort ] );

[ windowView release ];

}

[ window setContentView:nil ];

[ window close ];

[ window release ];

}

/* Ensure the cursor will be visible and working when we quit */

CGDisplayShowCursor (display_id);

CGAssociateMouseAndMouseCursorPosition (1);

}

static SDL_Surface* QZ_SetVideoFullScreen (_THIS, SDL_Surface *current, int width,

int height, int bpp, Uint32 flags) {

int exact_match;

/* See if requested mode exists */

mode = CGDisplayBestModeForParameters (display_id, bpp, width,

height, &exact_match);

/* Require an exact match to the requested mode */

if ( ! exact_match ) {

sprintf (QZ_Error, "Failed to find display resolution: %dx%dx%d", width, height, bpp);

SDL_SetError (QZ_Error);

goto ERR_NO_MATCH;

}

/* Put up the blanking window (a window above all other windows) */

if ( CGDisplayNoErr != CGDisplayCapture (display_id) ) {

SDL_SetError ("Failed capturing display");

goto ERR_NO_CAPTURE;

}

/* Do the physical switch */

if ( CGDisplayNoErr != CGDisplaySwitchToMode (display_id, mode) ) {

SDL_SetError ("Failed switching display resolution");

goto ERR_NO_SWITCH;

}

/* None of these methods seem to fix the fullscreen artifacts bug(s) */

#if USE_GDHANDLE

SetGDevice(GetMainDevice());

current->pitch = (**(** GetMainDevice() ).gdPMap).rowBytes & 0x3FFF;

current->pixels = (**(** GetMainDevice() ).gdPMap).baseAddr;

#elif USE_CREATEPORT

device_port = CreateNewPortForCGDisplayID((Uint32*)display_id);

SetPort (device_port);

LockPortBits ( device_port );

current->pixels = GetPixBaseAddr ( GetPortPixMap ( device_port ) );

current->pitch = GetPixRowBytes ( GetPortPixMap ( device_port ) );

UnlockPortBits ( device_port );

#else

current->pixels = (Uint32*) CGDisplayBaseAddress (display_id);

current->pitch = CGDisplayBytesPerRow (display_id);

#endif

current->w = width;

current->h = height;

current->flags |= SDL_FULLSCREEN;

current->flags |= SDL_HWSURFACE;

this->UpdateRects = QZ_DirectUpdate;

/* Setup some mode-dependant info */

if ( CGSDisplayCanHWFill (display_id) ) {

this->info.blit_fill = 1;

this->FillHWRect = QZ_FillHWRect;

}

if ( CGDisplayCanSetPalette (display_id) )

current->flags |= SDL_HWPALETTE;

/* Setup OpenGL for a fullscreen context */

if (flags & SDL_OPENGL) {

CGLError err;

CGLContextObj ctx;

if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {

return NULL;

}

ctx = [ gl_context cglContext ];

err = CGLSetFullScreen (ctx);

if (err) {

sprintf (QZ_Error, "Error setting OpenGL fullscreen: %s", CGLErrorString(err));

SDL_SetError (QZ_Error);

goto ERR_NO_GL;

}

[ gl_context makeCurrentContext];

current->flags |= SDL_OPENGL;

}

/* If we don't hide menu bar, it will get events and interrupt the program */

HideMenuBar ();

/* Save the flags to ensure correct tear-down */

mode_flags = current->flags;

return current;

/* Since the blanking window covers *all* windows (even force quit) correct recovery is crutial */

ERR_NO_GL: CGDisplaySwitchToMode (display_id, save_mode);

ERR_NO_SWITCH: CGDisplayRelease (display_id);

ERR_NO_CAPTURE:

ERR_NO_MATCH: return NULL;

}

static SDL_Surface* QZ_SetVideoWindowed (_THIS, SDL_Surface *current, int width,

int height, int bpp, Uint32 flags) {

NSRect rect;

rect = NSMakeRect (0, 0, width, height);

/* Manually create a window, avoids having a nib file resource */

window = [ [ SDL_QuartzWindow alloc ] initWithContentRect:rect

styleMask:(NSTitledWindowMask | NSMiniaturizableWindowMask)

backing: //NSBackingStoreBuffered

NSBackingStoreRetained

defer:NO ];

if (window == nil) {

SDL_SetError ("Could not create the Cocoa window");

return NULL;

}

current->w = width;

current->h = height;

[ window setTitle:windowTitle ];

[ window setAcceptsMouseMovedEvents:YES ];

[ window center ];

/* For OpenGL, we set the content view to a NSOpenGLView */

if ( flags & SDL_OPENGL ) {

if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {

return NULL;

}

[ gl_context setView: [ window contentView ] ];

[ gl_context makeCurrentContext];

[ window orderFront:nil ];

current->flags |= SDL_OPENGL;

}

/* For 2D, we set the content view to a NSQuickDrawView */

else {

windowView = [ [ NSQuickDrawView alloc ] init ];

[ window setContentView:windowView ];

[ window orderFront:nil ];

LockPortBits ( [ windowView qdPort ] );

current->pixels = GetPixBaseAddr ( GetPortPixMap ( [ windowView qdPort ] ) );

current->pitch = GetPixRowBytes ( GetPortPixMap ( [ windowView qdPort ] ) );

/* Offset 22 pixels down to fill the full content region */

current->pixels += 22 * current->pitch;

current->flags |= SDL_SWSURFACE;

current->flags |= SDL_PREALLOC;

this->UpdateRects = QZ_UpdateRects;

}

return current;

}

static SDL_Surface* QZ_SetVideoMode (_THIS, SDL_Surface *current, int width,

int height, int bpp, Uint32 flags) {

if (SDL_VideoSurface != NULL)

QZ_UnsetVideoMode (this);

current->flags = 0;

/* Setup full screen video */

if ( flags & SDL_FULLSCREEN ) {

current = QZ_SetVideoFullScreen (this, current, width, height, bpp, flags );

if (current == NULL)

return NULL;

}

/* Setup windowed video */

else {

/* Force bpp to the device's bpp */

bpp = current->format->BitsPerPixel;

current = QZ_SetVideoWindowed (this, current, width, height, bpp, flags);

if (current == NULL)

return NULL;

}

/* Setup the new pixel format */

{

int amask = 0,

rmask = 0,

gmask = 0,

bmask = 0;

switch (bpp) {

case 16: /* (1)-5-5-5 RGB */

amask = 0;

rmask = 0x7c00;

gmask = 0x3e0;

bmask = 0x1f;

break;

case 24:

SDL_SetError ("24bpp is not available");

return NULL;

case 32: /* (8)-8-8-8 ARGB */

amask = 0xFF000000;

rmask = 0x00FF0000;

gmask = 0x0000FF00;

bmask = 0x000000FF;

break;

}

if ( ! SDL_ReallocFormat (current, bpp,

rmask, gmask, bmask, amask ) ) {

SDL_SetError ("Couldn't reallocate pixel format");

return NULL;

}

}

/* Warp mouse to origin in order to get passive mouse motion events started correctly */

QZ_PrivateWarpCursor (this, current->flags & SDL_FULLSCREEN, height, 0, 0);

return current;

}

static int QZ_ToggleFullScreen (_THIS, int on) {

return -1;

}

static int QZ_SetColors (_THIS, int first_color, int num_colors,

SDL_Color *colors) {

CGTableCount index;

CGDeviceColor color;

for (index = first_color; index < first_color+num_colors; index++) {

/* Clamp colors between 0.0 and 1.0 */

color.red = colors->r / 255.0;

color.blue = colors->b / 255.0;

color.green = colors->g / 255.0;

colors++;

CGPaletteSetColorAtIndex (palette, color, index);

}

if ( CGDisplayNoErr != CGDisplaySetPalette (display_id, palette) )

return 0;

return 1;

}

static void QZ_DirectUpdate (_THIS, int num_rects, SDL_Rect *rects) {

#pragma unused(this,num_rects,rects)

}

static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {

if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {

QZ_GL_SwapBuffers (this);

}

else {

int i;

RgnHandle dirty = NewRgn ();

RgnHandle temp = NewRgn ();

SetEmptyRgn (dirty);

/* Build the region of dirty rectangles */

for (i = 0; i < numRects; i++) {

MacSetRectRgn (temp, rects[i].x, rects[i].y,

rects[i].x + rects[i].w, rects[i].y + rects[i].h);

MacUnionRgn (dirty, temp, dirty);

}

/* Flush the dirty region */

QDFlushPortBuffer ( [ windowView qdPort ], dirty );

DisposeRgn (dirty);

DisposeRgn (temp);

}

}

static void QZ_VideoQuit (_THIS) {

QZ_UnsetVideoMode (this);

CGPaletteRelease (palette);

}

static int QZ_FillHWRect (_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) {

CGSDisplayHWFill (display_id, rect->x, rect->y, rect->w, rect->h, color);

return 0;

}

static int QZ_LockHWSurface(_THIS, SDL_Surface *surface) {

return 1;

}

static void QZ_UnlockHWSurface(_THIS, SDL_Surface *surface) {

}

static void QZ_FreeHWSurface (_THIS, SDL_Surface *surface) {

}

/*

int QZ_FlipHWSurface (_THIS, SDL_Surface *surface) {

return 0;

}

*/

/* Gamma functions */

static int QZ_SetGamma (_THIS, float red, float green, float blue) {

const CGGammaValue min = 0.0, max = 1.0;

if ( CGDisplayNoErr != CGSetDisplayTransferByFormula

(display_id, min, max, red, min, max, green, min, max, blue) )

return -1;

return 0;

}

static int QZ_GetGamma (_THIS, float *red, float *green, float *blue) {

CGGammaValue dummy;

if ( CGDisplayNoErr != CGGetDisplayTransferByFormula

(display_id, &dummy, &dummy, red,

&dummy, &dummy, green, &dummy, &dummy, blue) )

return -1;

return 0;

}

static int QZ_SetGammaRamp (_THIS, Uint16 *ramp) {

const CGTableCount tableSize = 255;

CGGammaValue redTable[tableSize];

CGGammaValue greenTable[tableSize];

CGGammaValue blueTable[tableSize];

int i;

/* Extract gamma values into separate tables, convert to floats between 0.0 and 1.0 */

for (i = 0; i < 256; i++)

redTable[i % 256] = ramp[i] / 65535.0;

for (i=256; i < 512; i++)

greenTable[i % 256] = ramp[i] / 65535.0;

for (i=512; i < 768; i++)

blueTable[i % 256] = ramp[i] / 65535.0;

if ( CGDisplayNoErr != CGSetDisplayTransferByTable

(display_id, tableSize, redTable, greenTable, blueTable) )

return -1;

return 0;

}

static int QZ_GetGammaRamp (_THIS, Uint16 *ramp) {

const CGTableCount tableSize = 255;

CGGammaValue redTable[tableSize];

CGGammaValue greenTable[tableSize];

CGGammaValue blueTable[tableSize];

CGTableCount actual;

int i;

if ( CGDisplayNoErr != CGGetDisplayTransferByTable

(display_id, tableSize, redTable, greenTable, blueTable, &actual) ||

actual != tableSize)

return -1;

/* Pack tables into one array, with values from 0 to 65535 */

for (i = 0; i < 256; i++)

ramp[i] = redTable[i % 256] * 65535.0;

for (i=256; i < 512; i++)

ramp[i] = greenTable[i % 256] * 65535.0;

for (i=512; i < 768; i++)

ramp[i] = blueTable[i % 256] * 65535.0;

return 0;

}

/* OpenGL helper functions */

static int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {

NSOpenGLPixelFormatAttribute attr[32];

NSOpenGLPixelFormat *fmt;

int i = 0;

int colorBits = bpp;

if ( flags & SDL_FULLSCREEN ) {

attr[i++] = NSOpenGLPFAFullScreen;

}

/* In windowed mode, the OpenGL pixel depth must match device pixel depth */

else if ( colorBits != device_bpp ) {

colorBits = device_bpp;

}

attr[i++] = NSOpenGLPFAColorSize;

attr[i++] = colorBits;

attr[i++] = NSOpenGLPFADepthSize;

attr[i++] = this->gl_config.depth_size;

if ( this->gl_config.double_buffer ) {

attr[i++] = NSOpenGLPFADoubleBuffer;

}

if ( this->gl_config.stencil_size != 0 ) {

attr[i++] = NSOpenGLPFAStencilSize;

attr[i++] = this->gl_config.stencil_size;

}

attr[i++] = NSOpenGLPFAScreenMask;

attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);

attr[i] = 0;

fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];

if (fmt == nil) {

SDL_SetError ("Failed creating OpenGL pixel format");

return 0;

}

gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt

shareContext:nil];

if (gl_context == nil) {

SDL_SetError ("Failed creating OpenGL context");

return 0;

}

/* Convince SDL that the GL "driver" is loaded */

this->gl_config.driver_loaded = 1;

[ fmt release ];

return 1;

}

static void QZ_TearDownOpenGL (_THIS) {

[ NSOpenGLContext clearCurrentContext ];

[ gl_context clearDrawable ];

[ gl_context release ];

}

/* SDL OpenGL functions */

static int QZ_GL_LoadLibrary (_THIS, const char *location) {

return 1;

}

static void* QZ_GL_GetProcAddress (_THIS, const char *proc) {

/* We may want to cache the bundleRef at some point */

CFBundleRef bundle;

CFURLRef bundleURL = CFURLCreateWithFileSystemPath (kCFAllocatorDefault,

CFSTR("/System/Library/Frameworks/OpenGL.framework"), kCFURLPOSIXPathStyle, true);

CFStringRef functionName = CFStringCreateWithCString

(kCFAllocatorDefault, proc, kCFStringEncodingASCII);

void *function;

bundle = CFBundleCreate (kCFAllocatorDefault, bundleURL);

assert (bundle != NULL);

function = CFBundleGetFunctionPointerForName (bundle, functionName);

CFRelease ( bundleURL );

CFRelease ( functionName );

CFRelease ( bundle );

return function;

}

static int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {

/*

CGLContextRef ctx = [ gl_context cglContext ];

CGLContextParameter param;

switch (attrib) {

case SDL_GL_RED_SIZE: param = CGLContextParameter break;

}

CGLGetParameter (ctx, param, (long*)value);

*/

*value = -1;

return -1;

}

static int QZ_GL_MakeCurrent (_THIS) {

[ gl_context makeCurrentContext ];

return 0;

}

static void QZ_GL_SwapBuffers (_THIS) {

[ gl_context flushBuffer ];

}