/
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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/* register for sleep notifications so wake from sleep generates SDL_VIDEOEXPOSE */
QZ_RegisterForSleepNotifications (this);
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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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664
current = QZ_SetVideoWindowed (this, current, width, height, bpp, flags);
if (current == NULL)
return NULL;
}
665
666
667
/* Setup the new pixel format */
{
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671
672
int amask = 0,
rmask = 0,
gmask = 0,
bmask = 0;
673
674
switch (bpp) {
case 16: /* (1)-5-5-5 RGB */
675
amask = 0;
676
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678
rmask = 0x7C00;
gmask = 0x03E0;
bmask = 0x001F;
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683
break;
case 24:
SDL_SetError ("24bpp is not available");
return NULL;
case 32: /* (8)-8-8-8 ARGB */
684
amask = 0x00000000;
685
686
687
688
689
rmask = 0x00FF0000;
gmask = 0x0000FF00;
bmask = 0x000000FF;
break;
}
690
691
692
if ( ! SDL_ReallocFormat (current, bpp,
rmask, gmask, bmask, amask ) ) {
693
694
695
SDL_SetError ("Couldn't reallocate pixel format");
return NULL;
}
696
}
697
698
/* Signal successful completion (used internally) */
699
video_set = SDL_TRUE;
700
701
702
703
return current;
}
704
static int QZ_ToggleFullScreen (_THIS, int on) {
705
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707
return -1;
}
708
709
static int QZ_SetColors (_THIS, int first_color, int num_colors,
SDL_Color *colors) {
710
711
712
CGTableCount index;
CGDeviceColor color;
713
714
for (index = first_color; index < first_color+num_colors; index++) {
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716
717
718
719
/* 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;
720
721
colors++;
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724
CGPaletteSetColorAtIndex (palette, color, index);
}
725
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727
if ( CGDisplayNoErr != CGDisplaySetPalette (display_id, palette) )
return 0;
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731
732
return 1;
}
static void QZ_DirectUpdate (_THIS, int num_rects, SDL_Rect *rects) {
733
#pragma unused(this,num_rects,rects)
734
735
}
736
737
738
739
/*
The obscured code is based on work by Matt Slot fprefect@ambrosiasw.com,
who supplied sample code for Carbon.
*/
740
741
static int QZ_IsWindowObscured (NSWindow *window) {
742
//#define TEST_OBSCURED 1
743
744
#if TEST_OBSCURED
745
746
747
/*
In order to determine if a direct copy to the screen is possible,
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749
750
751
752
753
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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756
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760
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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762
763
764
765
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
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771
772
773
-deactivated normal windows use activated normal
window shadows (slight inaccuraccy)
*/
/* Cache the connection to the window server */
static CGSConnectionID cgsConnection = (CGSConnectionID) -1;
774
775
776
/* Cache the dock icon windows */
static CGSWindowID dockIcons[kMaxWindows];
static int numCachedDockIcons = 0;
777
778
779
780
781
CGSWindowID windows[kMaxWindows];
CGSWindowCount i, count;
CGSWindowLevel winLevel;
CGSRect winRect;
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784
785
CGSRect contentRect;
int windowNumber;
//int isMainWindow;
786
int firstDockIcon;
787
788
int dockIconCacheMiss;
int windowContentOffset;
789
790
int obscured = SDL_TRUE;
791
792
if ( [ window isVisible ] ) {
793
794
795
796
797
/*
walk the window list looking for windows over top of
(or casting a shadow on) ours
*/
798
799
800
801
802
/*
Get a connection to the window server
Should probably be moved out into SetVideoMode() or InitVideo()
*/
803
804
805
806
if (cgsConnection == (CGSConnectionID) -1) {
cgsConnection = (CGSConnectionID) 0;
cgsConnection = _CGSDefaultConnection ();
}
807
808
809
if (cgsConnection) {
810
811
812
813
if ( ! [ window styleMask ] & NSBorderlessWindowMask )
windowContentOffset = 22;
else
windowContentOffset = 0;
814
815
816
windowNumber = [ window windowNumber ];
//isMainWindow = [ window isMainWindow ];
817
818
819
820
821
/* The window list is sorted according to order on the screen */
count = 0;
CGSGetOnScreenWindowList (cgsConnection, 0, kMaxWindows, windows, &count);
CGSGetScreenRectForWindow (cgsConnection, windowNumber, &contentRect);
822
823
824
825
/* adjust rect for window title bar (if present) */
contentRect.origin.y += windowContentOffset;
contentRect.size.height -= windowContentOffset;
826
827
828
firstDockIcon = -1;
dockIconCacheMiss = SDL_FALSE;
829
830
831
832
833
/*
The first window is always an empty window with level kCGSWindowLevelTop
so start at index 1
*/
834
for (i = 1; i < count; i++) {
835
836
837
/* If we reach our window in the list, it cannot be obscured */
if (windows[i] == windowNumber) {
838
839
840
841
842
obscured = SDL_FALSE;
break;
}
else {
843
844
845
846
847
848
float shadowSide;
float shadowTop;
float shadowBottom;
CGSGetWindowLevel (cgsConnection, windows[i], &winLevel);
849
850
if (winLevel == kCGSWindowLevelDockIcon) {
851
852
int j;
853
854
if (firstDockIcon < 0) {
855
856
firstDockIcon = i;
857
858
if (numCachedDockIcons > 0) {
859
860
for (j = 0; j < numCachedDockIcons; j++) {
861
862
863
864
865
866
if (windows[i] == dockIcons[j])
i++;
else
break;
}
867
868
if (j != 0) {
869
870
i--;
871
872
if (j < numCachedDockIcons) {
873
874
875
876
877
878
879
dockIconCacheMiss = SDL_TRUE;
}
}
}
}
880
881
882
883
884
continue;
}
else if (winLevel == kCGSWindowLevelMenuIgnore
/* winLevel == kCGSWindowLevelTop */) {
885
886
887
888
889
continue; /* cannot obscure window */
}
else if (winLevel == kCGSWindowLevelDockMenu ||
winLevel == kCGSWindowLevelMenu) {
890
891
892
shadowSide = 18;
shadowTop = 4;
893
shadowBottom = 22;
894
895
}
else if (winLevel == kCGSWindowLevelUtility) {
896
897
898
899
900
901
shadowSide = 8;
shadowTop = 4;
shadowBottom = 12;
}
else if (winLevel == kCGSWindowLevelNormal) {
902
903
904
905
906
/*
These numbers are for foreground windows,
they are too big (but will work) for background windows
*/
907
908
909
910
911
shadowSide = 20;
shadowTop = 10;
shadowBottom = 24;
}
else if (winLevel == kCGSWindowLevelDock) {
912
913
914
915
/* Create dock icon cache */
if (numCachedDockIcons != (i-firstDockIcon) ||
dockIconCacheMiss) {
916
917
numCachedDockIcons = i - firstDockIcon;
918
memcpy (dockIcons, &(windows[firstDockIcon]),
919
920
numCachedDockIcons * sizeof(*windows));
}
921
922
923
924
925
926
927
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
else {
928
929
930
931
932
933
/*
kCGSWindowLevelDockLabel,
kCGSWindowLevelDock,
kOther???
*/
934
935
936
937
938
939
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
940
941
CGSGetScreenRectForWindow (cgsConnection, windows[i], &winRect);
942
943
944
945
946
winRect.origin.x -= shadowSide;
winRect.origin.y -= shadowTop;
winRect.size.width += shadowSide;
winRect.size.height += shadowBottom;
947
948
if (NSIntersectsRect (contentRect, winRect)) {
949
950
951
952
obscured = SDL_TRUE;
break;
}
953
954
955
} /* window was not our window */
956
} /* iterate over windows */
957
958
} /* get cgsConnection */
959
960
961
962
963
964
965
966
967
} /* window is visible */
return obscured;
#else
return SDL_TRUE;
#endif
}
968
969
970
971
972
973
974
975
976
977
978
979
/* 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 ] );
}
980
static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {
981
982
983
984
if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {
QZ_GL_SwapBuffers (this);
}
985
986
987
else if ( [ qz_window isMiniaturized ] ) {
/* Do nothing if miniaturized */
988
}
989
990
else if ( ! QZ_IsWindowObscured (qz_window) ) {
991
992
993
994
995
/* Use direct copy to flush contents to the display */
CGrafPtr savePort;
CGrafPtr dstPort, srcPort;
const BitMap *dstBits, *srcBits;
996
Rect dstRect, srcRect;
997
998
Point offset;
int i;
999
1000
GetPort (&savePort);