/
SDL_QuartzVideo.m
1632 lines (1241 loc) · 48.3 KB
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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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cursor_visible = 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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/* 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;
}
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//[ qz_window setReleasedWhenClosed:YES ];
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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;
}
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661
/* Setup the new pixel format */
{
662
663
664
665
666
int amask = 0,
rmask = 0,
gmask = 0,
bmask = 0;
667
668
switch (bpp) {
case 16: /* (1)-5-5-5 RGB */
669
amask = 0;
670
671
672
rmask = 0x7C00;
gmask = 0x03E0;
bmask = 0x001F;
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677
break;
case 24:
SDL_SetError ("24bpp is not available");
return NULL;
case 32: /* (8)-8-8-8 ARGB */
678
amask = 0x00000000;
679
680
681
682
683
rmask = 0x00FF0000;
gmask = 0x0000FF00;
bmask = 0x000000FF;
break;
}
684
685
686
if ( ! SDL_ReallocFormat (current, bpp,
rmask, gmask, bmask, amask ) ) {
687
688
689
SDL_SetError ("Couldn't reallocate pixel format");
return NULL;
}
690
}
691
692
/* Signal successful completion (used internally) */
693
video_set = SDL_TRUE;
694
695
696
697
return current;
}
698
static int QZ_ToggleFullScreen (_THIS, int on) {
699
return 0;
700
701
}
702
703
static int QZ_SetColors (_THIS, int first_color, int num_colors,
SDL_Color *colors) {
704
705
706
CGTableCount index;
CGDeviceColor color;
707
708
for (index = first_color; index < first_color+num_colors; index++) {
709
710
711
712
713
/* 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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715
colors++;
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718
CGPaletteSetColorAtIndex (palette, color, index);
}
719
720
721
if ( CGDisplayNoErr != CGDisplaySetPalette (display_id, palette) )
return 0;
722
723
724
725
726
return 1;
}
static void QZ_DirectUpdate (_THIS, int num_rects, SDL_Rect *rects) {
727
#pragma unused(this,num_rects,rects)
728
729
}
730
731
732
733
/*
The obscured code is based on work by Matt Slot fprefect@ambrosiasw.com,
who supplied sample code for Carbon.
*/
734
735
static int QZ_IsWindowObscured (NSWindow *window) {
736
//#define TEST_OBSCURED 1
737
738
#if TEST_OBSCURED
739
740
741
/*
In order to determine if a direct copy to the screen is possible,
742
743
744
745
746
747
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
748
749
750
751
752
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754
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)
755
756
757
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759
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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764
765
766
767
-deactivated normal windows use activated normal
window shadows (slight inaccuraccy)
*/
/* Cache the connection to the window server */
static CGSConnectionID cgsConnection = (CGSConnectionID) -1;
768
769
770
/* Cache the dock icon windows */
static CGSWindowID dockIcons[kMaxWindows];
static int numCachedDockIcons = 0;
771
772
773
774
775
CGSWindowID windows[kMaxWindows];
CGSWindowCount i, count;
CGSWindowLevel winLevel;
CGSRect winRect;
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777
778
779
CGSRect contentRect;
int windowNumber;
//int isMainWindow;
780
int firstDockIcon;
781
782
int dockIconCacheMiss;
int windowContentOffset;
783
784
int obscured = SDL_TRUE;
785
786
if ( [ window isVisible ] ) {
787
788
789
790
791
/*
walk the window list looking for windows over top of
(or casting a shadow on) ours
*/
792
793
794
795
796
/*
Get a connection to the window server
Should probably be moved out into SetVideoMode() or InitVideo()
*/
797
798
799
800
if (cgsConnection == (CGSConnectionID) -1) {
cgsConnection = (CGSConnectionID) 0;
cgsConnection = _CGSDefaultConnection ();
}
801
802
803
if (cgsConnection) {
804
805
806
807
if ( ! [ window styleMask ] & NSBorderlessWindowMask )
windowContentOffset = 22;
else
windowContentOffset = 0;
808
809
810
windowNumber = [ window windowNumber ];
//isMainWindow = [ window isMainWindow ];
811
812
813
814
815
/* The window list is sorted according to order on the screen */
count = 0;
CGSGetOnScreenWindowList (cgsConnection, 0, kMaxWindows, windows, &count);
CGSGetScreenRectForWindow (cgsConnection, windowNumber, &contentRect);
816
817
818
819
/* adjust rect for window title bar (if present) */
contentRect.origin.y += windowContentOffset;
contentRect.size.height -= windowContentOffset;
820
821
822
firstDockIcon = -1;
dockIconCacheMiss = SDL_FALSE;
823
824
825
826
827
/*
The first window is always an empty window with level kCGSWindowLevelTop
so start at index 1
*/
828
for (i = 1; i < count; i++) {
829
830
831
/* If we reach our window in the list, it cannot be obscured */
if (windows[i] == windowNumber) {
832
833
834
835
836
obscured = SDL_FALSE;
break;
}
else {
837
838
839
840
841
842
float shadowSide;
float shadowTop;
float shadowBottom;
CGSGetWindowLevel (cgsConnection, windows[i], &winLevel);
843
844
if (winLevel == kCGSWindowLevelDockIcon) {
845
846
int j;
847
848
if (firstDockIcon < 0) {
849
850
firstDockIcon = i;
851
852
if (numCachedDockIcons > 0) {
853
854
for (j = 0; j < numCachedDockIcons; j++) {
855
856
857
858
859
860
if (windows[i] == dockIcons[j])
i++;
else
break;
}
861
862
if (j != 0) {
863
864
i--;
865
866
if (j < numCachedDockIcons) {
867
868
869
870
871
872
873
dockIconCacheMiss = SDL_TRUE;
}
}
}
}
874
875
876
877
878
continue;
}
else if (winLevel == kCGSWindowLevelMenuIgnore
/* winLevel == kCGSWindowLevelTop */) {
879
880
881
882
883
continue; /* cannot obscure window */
}
else if (winLevel == kCGSWindowLevelDockMenu ||
winLevel == kCGSWindowLevelMenu) {
884
885
886
shadowSide = 18;
shadowTop = 4;
887
shadowBottom = 22;
888
889
}
else if (winLevel == kCGSWindowLevelUtility) {
890
891
892
893
894
895
shadowSide = 8;
shadowTop = 4;
shadowBottom = 12;
}
else if (winLevel == kCGSWindowLevelNormal) {
896
897
898
899
900
/*
These numbers are for foreground windows,
they are too big (but will work) for background windows
*/
901
902
903
904
905
shadowSide = 20;
shadowTop = 10;
shadowBottom = 24;
}
else if (winLevel == kCGSWindowLevelDock) {
906
907
908
909
/* Create dock icon cache */
if (numCachedDockIcons != (i-firstDockIcon) ||
dockIconCacheMiss) {
910
911
numCachedDockIcons = i - firstDockIcon;
912
memcpy (dockIcons, &(windows[firstDockIcon]),
913
914
numCachedDockIcons * sizeof(*windows));
}
915
916
917
918
919
920
921
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
else {
922
923
924
925
926
927
/*
kCGSWindowLevelDockLabel,
kCGSWindowLevelDock,
kOther???
*/
928
929
930
931
932
933
/* no shadow */
shadowSide = 0;
shadowTop = 0;
shadowBottom = 0;
}
934
935
CGSGetScreenRectForWindow (cgsConnection, windows[i], &winRect);
936
937
938
939
940
winRect.origin.x -= shadowSide;
winRect.origin.y -= shadowTop;
winRect.size.width += shadowSide;
winRect.size.height += shadowBottom;
941
942
if (NSIntersectsRect (contentRect, winRect)) {
943
944
945
946
obscured = SDL_TRUE;
break;
}
947
948
949
} /* window was not our window */
950
} /* iterate over windows */
951
952
} /* get cgsConnection */
953
954
955
956
957
958
959
960
961
} /* window is visible */
return obscured;
#else
return SDL_TRUE;
#endif
}
962
963
964
965
966
967
968
969
970
971
972
973
/* 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 ] );
}
974
static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {
975
976
977
978
if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {
QZ_GL_SwapBuffers (this);
}
979
980
981
else if ( [ qz_window isMiniaturized ] ) {
/* Do nothing if miniaturized */
982
}
983
984
else if ( ! QZ_IsWindowObscured (qz_window) ) {
985
986
987
988
989
/* Use direct copy to flush contents to the display */
CGrafPtr savePort;
CGrafPtr dstPort, srcPort;
const BitMap *dstBits, *srcBits;
990
Rect dstRect, srcRect;
991
992
Point offset;
int i;
993
994
GetPort (&savePort);
995
996
997
dstPort = CreateNewPortForCGDisplayID ((UInt32)display_id);
srcPort = [ window_view qdPort ];
998
999
1000
offset.h = 0;
offset.v = 0;