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SDL_QuartzVideo.m
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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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
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slouken@libsdl.org
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*/
#include "SDL_QuartzVideo.h"
/* Include files into one compile unit...break apart eventually */
#include "SDL_QuartzWM.m"
#include "SDL_QuartzEvents.m"
#include "SDL_QuartzWindow.m"
/* Bootstrap binding, enables entry point into the driver */
VideoBootStrap QZ_bootstrap = {
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"Quartz", "Mac OS X CoreGraphics", QZ_Available, QZ_CreateDevice
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};
/* Bootstrap functions */
static int QZ_Available () {
return 1;
}
static SDL_VideoDevice* QZ_CreateDevice (int device_index) {
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#pragma unused (device_index)
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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) );
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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;
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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;
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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;
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device->CreateYUVOverlay = QZ_CreateYUVOverlay;
device->free = QZ_DeleteDevice;
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return device;
}
static void QZ_DeleteDevice (SDL_VideoDevice *device) {
free (device->hidden);
free (device);
}
static int QZ_VideoInit (_THIS, SDL_PixelFormat *video_format) {
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/* 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 ();
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/* Gather some information that is useful to know about the display */
CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayBitsPerPixel),
kCFNumberSInt32Type, &device_bpp);
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CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayWidth),
kCFNumberSInt32Type, &device_width);
CFNumberGetValue (CFDictionaryGetValue (save_mode, kCGDisplayHeight),
kCFNumberSInt32Type, &device_height);
video_format->BitsPerPixel = device_bpp;
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/* Set misc globals */
current_grab_mode = SDL_GRAB_OFF;
in_foreground = YES;
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return 0;
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}
static SDL_Rect** QZ_ListModes (_THIS, SDL_PixelFormat *format, Uint32 flags) {
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CFIndex num_modes;
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CFIndex i;
int list_size = 0;
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/* Any windowed mode is acceptable */
if ( (flags & SDL_FULLSCREEN) == 0 )
return (SDL_Rect**)-1;
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/* Free memory from previous call, if any */
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if ( client_mode_list != NULL ) {
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int i;
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for (i = 0; client_mode_list[i] != NULL; i++)
free (client_mode_list[i]);
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free (client_mode_list);
client_mode_list = NULL;
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}
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num_modes = CFArrayGetCount (mode_list);
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/* Build list of modes with the requested bpp */
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for (i = 0; i < num_modes; i++) {
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CFDictionaryRef onemode;
CFNumberRef number;
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int bpp;
onemode = CFArrayGetValueAtIndex (mode_list, i);
number = CFDictionaryGetValue (onemode, kCGDisplayBitsPerPixel);
CFNumberGetValue (number, kCFNumberSInt32Type, &bpp);
if (bpp == format->BitsPerPixel) {
int intvalue;
int hasMode;
int width, height;
number = CFDictionaryGetValue (onemode, kCGDisplayWidth);
CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);
width = (Uint16) intvalue;
number = CFDictionaryGetValue (onemode, kCGDisplayHeight);
CFNumberGetValue (number, kCFNumberSInt32Type, &intvalue);
height = (Uint16) intvalue;
/* Check if mode is already in the list */
{
int i;
hasMode = SDL_FALSE;
for (i = 0; i < list_size; i++) {
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if (client_mode_list[i]->w == width &&
client_mode_list[i]->h == height) {
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hasMode = SDL_TRUE;
break;
}
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}
}
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/* Grow the list and add mode to the list */
if ( ! hasMode ) {
SDL_Rect *rect;
list_size++;
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if (client_mode_list == NULL)
client_mode_list = (SDL_Rect**)
malloc (sizeof(*client_mode_list) * (list_size+1) );
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else
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client_mode_list = (SDL_Rect**)
realloc (client_mode_list, sizeof(*client_mode_list) * (list_size+1));
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rect = (SDL_Rect*) malloc (sizeof(**client_mode_list));
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if (client_mode_list == NULL || rect == NULL) {
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SDL_OutOfMemory ();
return NULL;
}
rect->w = width;
rect->h = height;
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client_mode_list[list_size-1] = rect;
client_mode_list[list_size] = NULL;
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}
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}
}
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/* Sort list largest to smallest (by area) */
{
int i, j;
for (i = 0; i < list_size; i++) {
for (j = 0; j < list_size-1; j++) {
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int area1, area2;
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area1 = client_mode_list[j]->w * client_mode_list[j]->h;
area2 = client_mode_list[j+1]->w * client_mode_list[j+1]->h;
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if (area1 < area2) {
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SDL_Rect *tmp = client_mode_list[j];
client_mode_list[j] = client_mode_list[j+1];
client_mode_list[j+1] = tmp;
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}
}
}
}
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return client_mode_list;
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}
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/*
Gamma functions to try to hide the flash from a rez switch
Fade the display from normal to black
Save gamma tables for fade back to normal
*/
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static UInt32 QZ_FadeGammaOut (_THIS, SDL_QuartzGammaTable *table) {
CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE],
greenTable[QZ_GAMMA_TABLE_SIZE],
blueTable[QZ_GAMMA_TABLE_SIZE];
float percent;
int j;
int actual;
if ( (CGDisplayNoErr != CGGetDisplayTransferByTable
(display_id, QZ_GAMMA_TABLE_SIZE,
table->red, table->green, table->blue, &actual)) ||
actual != QZ_GAMMA_TABLE_SIZE) {
return 1;
}
memcpy (redTable, table->red, sizeof(redTable));
memcpy (greenTable, table->green, sizeof(greenTable));
memcpy (blueTable, table->blue, sizeof(greenTable));
for (percent = 1.0; percent >= 0.0; percent -= 0.01) {
for (j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
redTable[j] = redTable[j] * percent;
greenTable[j] = greenTable[j] * percent;
blueTable[j] = blueTable[j] * percent;
}
if (CGDisplayNoErr != CGSetDisplayTransferByTable
(display_id, QZ_GAMMA_TABLE_SIZE,
redTable, greenTable, blueTable)) {
CGDisplayRestoreColorSyncSettings();
return 1;
}
SDL_Delay (10);
}
return 0;
}
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/*
Fade the display from black to normal
Restore previously saved gamma values
*/
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static UInt32 QZ_FadeGammaIn (_THIS, SDL_QuartzGammaTable *table) {
CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE],
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greenTable[QZ_GAMMA_TABLE_SIZE],
blueTable[QZ_GAMMA_TABLE_SIZE];
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float percent;
int j;
memset (redTable, 0, sizeof(redTable));
memset (greenTable, 0, sizeof(greenTable));
memset (blueTable, 0, sizeof(greenTable));
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for (percent = 0.0; percent <= 1.0; percent += 0.01) {
for (j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
redTable[j] = table->red[j] * percent;
greenTable[j] = table->green[j] * percent;
blueTable[j] = table->blue[j] * percent;
}
if (CGDisplayNoErr != CGSetDisplayTransferByTable
(display_id, QZ_GAMMA_TABLE_SIZE,
redTable, greenTable, blueTable)) {
CGDisplayRestoreColorSyncSettings();
return 1;
}
SDL_Delay (10);
}
return 0;
}
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static void QZ_UnsetVideoMode (_THIS) {
/* Reset values that may change between switches */
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this->info.blit_fill = 0;
this->FillHWRect = NULL;
this->UpdateRects = NULL;
this->LockHWSurface = NULL;
this->UnlockHWSurface = NULL;
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/* Release fullscreen resources */
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if ( mode_flags & SDL_FULLSCREEN ) {
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SDL_QuartzGammaTable gamma_table;
int gamma_error;
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NSRect screen_rect;
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gamma_error = QZ_FadeGammaOut (this, &gamma_table);
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/*
Release the OpenGL context
Do this first to avoid trash on the display before fade
*/
if ( mode_flags & SDL_OPENGL ) {
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QZ_TearDownOpenGL (this);
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CGLSetFullScreen (NULL);
}
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/* Restore original screen resolution/bpp */
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CGDisplaySwitchToMode (display_id, save_mode);
CGDisplayRelease (display_id);
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ShowMenuBar ();
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/*
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Reset the main screen's rectangle
See comment in QZ_SetVideoFullscreen for why we do this
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*/
screen_rect = NSMakeRect(0,0,device_width,device_height);
[ [ NSScreen mainScreen ] setFrame:screen_rect ];
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if (! gamma_error)
QZ_FadeGammaIn (this, &gamma_table);
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}
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/* Release window mode resources */
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else {
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[ qz_window close ];
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[ qz_window release ];
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qz_window = nil;
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window_view = nil;
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/* Release the OpenGL context */
if ( mode_flags & SDL_OPENGL )
QZ_TearDownOpenGL (this);
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}
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/* Restore gamma settings */
CGDisplayRestoreColorSyncSettings ();
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/* Ensure the cursor will be visible and working when we quit */
CGDisplayShowCursor (display_id);
CGAssociateMouseAndMouseCursorPosition (1);
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/* Signal successful teardown */
video_set = SDL_FALSE;
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}
static SDL_Surface* QZ_SetVideoFullScreen (_THIS, SDL_Surface *current, int width,
int height, int bpp, Uint32 flags) {
int exact_match;
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int gamma_error;
SDL_QuartzGammaTable gamma_table;
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NSRect screen_rect;
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/* Destroy any previous mode */
if (video_set == SDL_TRUE)
QZ_UnsetVideoMode (this);
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/* See if requested mode exists */
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mode = CGDisplayBestModeForParameters (display_id, bpp, width,
height, &exact_match);
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/* Require an exact match to the requested mode */
if ( ! exact_match ) {
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SDL_SetError ("Failed to find display resolution: %dx%dx%d", width, height, bpp);
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goto ERR_NO_MATCH;
}
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/* Fade display to zero gamma */
gamma_error = QZ_FadeGammaOut (this, &gamma_table);
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/* 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;
}
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/* Do the physical switch */
if ( CGDisplayNoErr != CGDisplaySwitchToMode (display_id, mode) ) {
SDL_SetError ("Failed switching display resolution");
goto ERR_NO_SWITCH;
}
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current->pixels = (Uint32*) CGDisplayBaseAddress (display_id);
current->pitch = CGDisplayBytesPerRow (display_id);
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current->flags = 0;
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current->w = width;
current->h = height;
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current->flags |= SDL_FULLSCREEN;
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current->flags |= SDL_HWSURFACE;
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current->flags |= SDL_PREALLOC;
this->UpdateRects = QZ_DirectUpdate;
this->LockHWSurface = QZ_LockHWSurface;
this->UnlockHWSurface = QZ_UnlockHWSurface;
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/* Setup some mode-dependant info */
if ( CGSDisplayCanHWFill (display_id) ) {
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this->info.blit_fill = 1;
this->FillHWRect = QZ_FillHWRect;
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}
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if ( CGDisplayCanSetPalette (display_id) )
current->flags |= SDL_HWPALETTE;
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/* Setup OpenGL for a fullscreen context */
if (flags & SDL_OPENGL) {
CGLError err;
CGLContextObj ctx;
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if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {
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goto ERR_NO_GL;
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}
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ctx = [ gl_context cglContext ];
err = CGLSetFullScreen (ctx);
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if (err) {
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SDL_SetError ("Error setting OpenGL fullscreen: %s", CGLErrorString(err));
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goto ERR_NO_GL;
}
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[ gl_context makeCurrentContext];
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glClear (GL_COLOR_BUFFER_BIT);
[ gl_context flushBuffer ];
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current->flags |= SDL_OPENGL;
}
/* If we don't hide menu bar, it will get events and interrupt the program */
HideMenuBar ();
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/* Fade the display to original gamma */
if (! gamma_error )
QZ_FadeGammaIn (this, &gamma_table);
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/*
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There is a bug in Cocoa where NSScreen doesn't synchronize
with CGDirectDisplay, so the main screen's frame is wrong.
As a result, coordinate translation produces incorrect results.
We can hack around this bug by setting the screen rect
ourselves. This hack should be removed if/when the bug is fixed.
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*/
screen_rect = NSMakeRect(0,0,width,height);
[ [ NSScreen mainScreen ] setFrame:screen_rect ];
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/* Save the flags to ensure correct tear-down */
mode_flags = current->flags;
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return current;
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/* Since the blanking window covers *all* windows (even force quit) correct recovery is crucial */
ERR_NO_GL: CGDisplaySwitchToMode (display_id, save_mode);
ERR_NO_SWITCH: CGDisplayRelease (display_id);
ERR_NO_CAPTURE: if (!gamma_error) { QZ_FadeGammaIn (this, &gamma_table); }
ERR_NO_MATCH: return NULL;
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}
static SDL_Surface* QZ_SetVideoWindowed (_THIS, SDL_Surface *current, int width,
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int height, int bpp, Uint32 flags) {
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unsigned int style;
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NSRect contentRect;
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current->flags = 0;
current->w = width;
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current->h = height;
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contentRect = NSMakeRect (0, 0, width, height);
/*
Check if we should completely destroy the previous mode
- If it is fullscreen
- If it has different noframe or resizable attribute
- If it is OpenGL (since gl attributes could be different)
- If new mode is OpenGL, but previous mode wasn't
*/
if (video_set == SDL_TRUE)
if ( (mode_flags & SDL_FULLSCREEN) ||
((mode_flags ^ flags) & (SDL_NOFRAME|SDL_RESIZABLE)) ||
(mode_flags & SDL_OPENGL) ||
(flags & SDL_OPENGL) )
QZ_UnsetVideoMode (this);
/* Check if we should recreate the window */
if (qz_window == nil) {
/* Set the window style based on input flags */
if ( flags & SDL_NOFRAME ) {
style = NSBorderlessWindowMask;
current->flags |= SDL_NOFRAME;
} else {
style = NSTitledWindowMask;
style |= (NSMiniaturizableWindowMask | NSClosableWindowMask);
if ( flags & SDL_RESIZABLE ) {
style |= NSResizableWindowMask;
current->flags |= SDL_RESIZABLE;
}
}
/* Manually create a window, avoids having a nib file resource */
qz_window = [ [ SDL_QuartzWindow alloc ]
initWithContentRect:contentRect
styleMask:style
backing:NSBackingStoreBuffered
defer:NO ];
if (qz_window == nil) {
SDL_SetError ("Could not create the Cocoa window");
return NULL;
}
[ qz_window setReleasedWhenClosed:YES ];
QZ_SetCaption(this, this->wm_title, this->wm_icon);
[ qz_window setAcceptsMouseMovedEvents:YES ];
[ qz_window setViewsNeedDisplay:NO ];
[ qz_window center ];
[ qz_window setDelegate:
[ [ [ SDL_QuartzWindowDelegate alloc ] init ] autorelease ] ];
}
/* We already have a window, just change its size */
else {
[ qz_window setContentSize:contentRect.size ];
current->flags |= (SDL_NOFRAME|SDL_RESIZABLE) & mode_flags;
}
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/* For OpenGL, we bind the context to a subview */
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if ( flags & SDL_OPENGL ) {
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if ( ! QZ_SetupOpenGL (this, bpp, flags) ) {
return NULL;
}
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window_view = [ [ NSView alloc ] initWithFrame:contentRect ];
[ window_view setAutoresizingMask: NSViewMinYMargin ];
[ [ qz_window contentView ] addSubview:window_view ];
[ gl_context setView: window_view ];
[ window_view release ];
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[ gl_context makeCurrentContext];
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[ qz_window makeKeyAndOrderFront:nil ];
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current->flags |= SDL_OPENGL;
}
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/* For 2D, we set the subview to an NSQuickDrawView */
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else {
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/* Only recreate the view if it doesn't already exist */
if (window_view == nil) {
window_view = [ [ SDL_QuartzWindowView alloc ] initWithFrame:contentRect ];
[ window_view setAutoresizingMask: NSViewMinYMargin ];
[ [ qz_window contentView ] addSubview:window_view ];
[ window_view release ];
[ qz_window makeKeyAndOrderFront:nil ];
}
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LockPortBits ( [ window_view qdPort ] );
current->pixels = GetPixBaseAddr ( GetPortPixMap ( [ window_view qdPort ] ) );
current->pitch = GetPixRowBytes ( GetPortPixMap ( [ window_view qdPort ] ) );
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UnlockPortBits ( [ window_view qdPort ] );
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current->flags |= SDL_SWSURFACE;
current->flags |= SDL_PREALLOC;
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current->flags |= SDL_ASYNCBLIT;
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/* Offset below the title bar to fill the full content region */
current->pixels += ((int)([ qz_window frame ].size.height) - height) * current->pitch;
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this->UpdateRects = QZ_UpdateRects;
this->LockHWSurface = QZ_LockWindow;
this->UnlockHWSurface = QZ_UnlockWindow;
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}
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/* Save flags to ensure correct teardown */
mode_flags = current->flags;
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return current;
}
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static SDL_Surface* QZ_SetVideoMode (_THIS, SDL_Surface *current, int width,
int height, int bpp, Uint32 flags) {
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current->flags = 0;
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/* 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 */
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bpp = device_bpp;
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current = QZ_SetVideoWindowed (this, current, width, height, bpp, flags);
if (current == NULL)
return NULL;
}
662
663
664
/* Setup the new pixel format */
{
665
666
667
668
669
int amask = 0,
rmask = 0,
gmask = 0,
bmask = 0;
670
671
switch (bpp) {
case 16: /* (1)-5-5-5 RGB */
672
amask = 0;
673
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675
rmask = 0x7C00;
gmask = 0x03E0;
bmask = 0x001F;
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680
break;
case 24:
SDL_SetError ("24bpp is not available");
return NULL;
case 32: /* (8)-8-8-8 ARGB */
681
amask = 0x00000000;
682
683
684
685
686
rmask = 0x00FF0000;
gmask = 0x0000FF00;
bmask = 0x000000FF;
break;
}
687
688
689
if ( ! SDL_ReallocFormat (current, bpp,
rmask, gmask, bmask, amask ) ) {
690
691
692
SDL_SetError ("Couldn't reallocate pixel format");
return NULL;
}
693
}
694
695
/* Signal successful completion (used internally) */
696
video_set = SDL_TRUE;
697
698
699
700
return current;
}
701
static int QZ_ToggleFullScreen (_THIS, int on) {
702
703
704
return -1;
}
705
706
static int QZ_SetColors (_THIS, int first_color, int num_colors,
SDL_Color *colors) {
707
708
709
CGTableCount index;
CGDeviceColor color;
710
711
for (index = first_color; index < first_color+num_colors; index++) {
712
713
714
715
716
/* 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;
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718
colors++;
719
720
721
CGPaletteSetColorAtIndex (palette, color, index);
}
722
723
724
if ( CGDisplayNoErr != CGDisplaySetPalette (display_id, palette) )
return 0;
725
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727
728
729
return 1;
}
static void QZ_DirectUpdate (_THIS, int num_rects, SDL_Rect *rects) {
730
#pragma unused(this,num_rects,rects)
731
732
}
733
734
735
736
/*
The obscured code is based on work by Matt Slot fprefect@ambrosiasw.com,
who supplied sample code for Carbon.
*/
737
738
static int QZ_IsWindowObscured (NSWindow *window) {
739
//#define TEST_OBSCURED 1
740
741
#if TEST_OBSCURED
742
743
744
/*
In order to determine if a direct copy to the screen is possible,
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746
747
748
749
750
we must figure out if there are any windows covering ours (including shadows).
This can be done by querying the window server about the on screen
windows for their screen rectangle and window level.
The procedure used below is puts accuracy before speed; however, it aims to call
the window server the fewest number of times possible to keep things reasonable.
In my testing on a 300mhz G3, this routine typically takes < 2 ms. -DW
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752
753
754
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757
Notes:
-Calls into the Window Server involve IPC which is slow.
-Getting a rectangle seems slower than getting the window level
-The window list we get back is in sorted order, top to bottom
-On average, I suspect, most windows above ours are dock icon windows (hence optimization)
-Some windows above ours are always there, and cannot move or obscure us (menu bar)
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759
760
761
762
Bugs:
-no way (yet) to deactivate direct drawing when a window is dragged,
or suddenly obscured, so drawing continues and can produce garbage
We need some kind of locking mechanism on window movement to prevent this
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768
769
770
-deactivated normal windows use activated normal
window shadows (slight inaccuraccy)
*/
/* Cache the connection to the window server */
static CGSConnectionID cgsConnection = (CGSConnectionID) -1;
771
772
773
/* Cache the dock icon windows */
static CGSWindowID dockIcons[kMaxWindows];
static int numCachedDockIcons = 0;
774
775
776
777
778
CGSWindowID windows[kMaxWindows];
CGSWindowCount i, count;
CGSWindowLevel winLevel;
CGSRect winRect;
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780
781
782
CGSRect contentRect;
int windowNumber;
//int isMainWindow;
783
int firstDockIcon;
784
785
int dockIconCacheMiss;
int windowContentOffset;
786
787
int obscured = SDL_TRUE;
788
789
if ( [ window isVisible ] ) {
790
791
792
793
794
/*
walk the window list looking for windows over top of
(or casting a shadow on) ours
*/
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796
797
798
799
/*
Get a connection to the window server
Should probably be moved out into SetVideoMode() or InitVideo()
*/
800
801
802
803
if (cgsConnection == (CGSConnectionID) -1) {
cgsConnection = (CGSConnectionID) 0;
cgsConnection = _CGSDefaultConnection ();
}
804
805
806
if (cgsConnection) {
807
808
809
810
if ( ! [ window styleMask ] & NSBorderlessWindowMask )
windowContentOffset = 22;
else
windowContentOffset = 0;
811
812
813
windowNumber = [ window windowNumber ];
//isMainWindow = [ window isMainWindow ];
814
815
816
817
818
/* The window list is sorted according to order on the screen */
count = 0;
CGSGetOnScreenWindowList (cgsConnection, 0, kMaxWindows, windows, &count);
CGSGetScreenRectForWindow (cgsConnection, windowNumber, &contentRect);
819
820
821
822
/* adjust rect for window title bar (if present) */
contentRect.origin.y += windowContentOffset;
contentRect.size.height -= windowContentOffset;
823
824
825
firstDockIcon = -1;
dockIconCacheMiss = SDL_FALSE;
826
827
828
829
830
/*
The first window is always an empty window with level kCGSWindowLevelTop
so start at index 1
*/
831
for (i = 1; i < count; i++) {
832
833
834
/* If we reach our window in the list, it cannot be obscured */
if (windows[i] == windowNumber) {
835
836
837
838
839
obscured = SDL_FALSE;
break;
}
else {
840
841
842
843
844
845
float shadowSide;
float shadowTop;
float shadowBottom;
CGSGetWindowLevel (cgsConnection, windows[i], &winLevel);
846
847
if (winLevel == kCGSWindowLevelDockIcon) {
848
849
int j;
850
851
if (firstDockIcon < 0) {
852
853
firstDockIcon = i;
854
855
if (numCachedDockIcons > 0) {
856
857
for (j = 0; j < numCachedDockIcons; j++) {
858
859
860
861
862
863
if (windows[i] == dockIcons[j])
i++;
else
break;
}
864
865
if (j != 0) {
866
867
i--;
868
869
if (j < numCachedDockIcons) {
870
871
872
873
874
875
876
dockIconCacheMiss = SDL_TRUE;
}
}
}
}
877
878
879
880
881
continue;
}
else if (winLevel == kCGSWindowLevelMenuIgnore
/* winLevel == kCGSWindowLevelTop */) {
882
883
884
885
886
continue; /* cannot obscure window */
}
else if (winLevel == kCGSWindowLevelDockMenu ||
winLevel == kCGSWindowLevelMenu) {
887
888
889
shadowSide = 18;
shadowTop = 4;
890
shadowBottom = 22;
891
892
}
else if (winLevel == kCGSWindowLevelUtility) {
893
894
895
896
897
898
shadowSide = 8;
shadowTop = 4;
shadowBottom = 12;
}
else if (winLevel == kCGSWindowLevelNormal) {
899
900
901
902
903
/*
These numbers are for foreground windows,
they are too big (but will work) for background windows
*/
904
905
906
907
908
shadowSide = 20;
shadowTop = 10;
shadowBottom = 24;
}
else if (winLevel == kCGSWindowLevelDock) {
909
910
911
912
/* Create dock icon cache */
if (numCachedDockIcons != (i-firstDockIcon) ||
dockIconCacheMiss) {
913
914
numCachedDockIcons = i - firstDockIcon;
915
memcpy (dockIcons, &(windows[firstDockIcon]),
916
917
numCachedDockIcons * sizeof(*windows));
}
918
919
920
921
922
923
924
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
else {
925
926
927
928
929
930
/*
kCGSWindowLevelDockLabel,
kCGSWindowLevelDock,
kOther???
*/
931
932
933
934
935
936
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
937
938
CGSGetScreenRectForWindow (cgsConnection, windows[i], &winRect);
939
940
941
942
943
winRect.origin.x -= shadowSide;
winRect.origin.y -= shadowTop;
winRect.size.width += shadowSide;
winRect.size.height += shadowBottom;
944
945
if (NSIntersectsRect (contentRect, winRect)) {
946
947
948
949
obscured = SDL_TRUE;
break;
}
950
951
952
} /* window was not our window */
953
} /* iterate over windows */
954
955
} /* get cgsConnection */
956
957
958
959
960
961
962
963
964
} /* window is visible */
return obscured;
#else
return SDL_TRUE;
#endif
}
965
966
967
968
969
970
971
972
973
974
975
976
/* Locking functions for the software window buffer */
static int QZ_LockWindow (_THIS, SDL_Surface *surface) {
return LockPortBits ( [ window_view qdPort ] );
}
static void QZ_UnlockWindow (_THIS, SDL_Surface *surface) {
UnlockPortBits ( [ window_view qdPort ] );
}
977
static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {
978
979
980
981
if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {
QZ_GL_SwapBuffers (this);
}
982
983
984
else if ( [ qz_window isMiniaturized ] ) {
/* Do nothing if miniaturized */
985
}
986
987
else if ( ! QZ_IsWindowObscured (qz_window) ) {
988
989
990
991
992
/* Use direct copy to flush contents to the display */
CGrafPtr savePort;
CGrafPtr dstPort, srcPort;
const BitMap *dstBits, *srcBits;
993
Rect dstRect, srcRect;
994
995
Point offset;
int i;
996
997
GetPort (&savePort);
998
999
1000
dstPort = CreateNewPortForCGDisplayID ((UInt32)display_id);
srcPort = [ window_view qdPort ];