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SDL_video.c
1646 lines (1459 loc) · 41 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* The high-level video driver subsystem */
#include "SDL.h"
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
#include "SDL_cursor_c.h"
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#include "../events/SDL_sysevents.h"
#include "../events/SDL_events_c.h"
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/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
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#if SDL_VIDEO_DRIVER_QUARTZ
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&QZ_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_X11
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&X11_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DGA
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&DGA_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_NANOX
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&NX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_IPOD
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&iPod_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_QTOPIA
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&Qtopia_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_WSCONS
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&WSCONS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_FBCON
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&FBCON_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DIRECTFB
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&DirectFB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PS2GS
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&PS2GS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GGI
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&GGI_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_VGL
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&VGL_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_SVGALIB
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&SVGALIB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GAPI
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&GAPI_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_WINDIB
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&WINDIB_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DDRAW
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&DIRECTX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_BWINDOW
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&BWINDOW_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_TOOLBOX
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&TOOLBOX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DRAWSPROCKET
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&DSp_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_CYBERGRAPHICS
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&CGX_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PHOTON
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&ph_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_EPOC
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&EPOC_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_XBIOS
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&XBIOS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_GEM
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&GEM_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_PICOGUI
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&PG_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_DC
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&DC_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_RISCOS
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&RISCOS_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_OS2FS
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&OS2FSLib_bootstrap,
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#endif
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#if SDL_VIDEO_DRIVER_AALIB
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&AALIB_bootstrap,
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#endif
#if SDL_VIDEO_DRIVER_DUMMY
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&DUMMY_bootstrap,
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#endif
#if SDL_VIDEO_DRIVER_GLSDL
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&glSDL_bootstrap,
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#endif
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NULL
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};
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static SDL_VideoDevice *_this = NULL;
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/* Various local functions */
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int SDL_VideoInit(const char *driver_name, Uint32 flags);
void SDL_VideoQuit(void);
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static int
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cmpmodes(const void *A, const void *B)
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{
SDL_DisplayMode a = *(const SDL_DisplayMode *) A;
SDL_DisplayMode b = *(const SDL_DisplayMode *) B;
if (a.w != b.w) {
return b.w - a.w;
}
if (a.h != b.h) {
return b.h - a.h;
}
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if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) {
return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format);
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}
if (a.refresh_rate != b.refresh_rate) {
return b.refresh_rate - a.refresh_rate;
}
return 0;
}
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int
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SDL_GetNumVideoDrivers(void)
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{
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return SDL_arraysize(bootstrap) - 1;
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}
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const char *
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SDL_GetVideoDriver(int index)
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{
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if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
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return bootstrap[index]->name;
}
return NULL;
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}
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/*
* Initialize the video and event subsystems -- determine native pixel format
*/
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int
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SDL_VideoInit(const char *driver_name, Uint32 flags)
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{
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SDL_VideoDevice *video;
int index;
int i;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
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/* Toggle the event thread flags, based on OS requirements */
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#if defined(MUST_THREAD_EVENTS)
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flags |= SDL_INIT_EVENTTHREAD;
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#elif defined(CANT_THREAD_EVENTS)
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if ((flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD) {
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SDL_SetError("OS doesn't support threaded events");
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return -1;
}
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#endif
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/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
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SDL_VideoQuit();
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}
/* Select the proper video driver */
index = 0;
video = NULL;
if (driver_name != NULL) {
for (i = 0; bootstrap[i]; ++i) {
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if (SDL_strncmp(bootstrap[i]->name, driver_name,
SDL_strlen(bootstrap[i]->name)) == 0) {
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
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}
break;
}
}
} else {
for (i = 0; bootstrap[i]; ++i) {
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if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
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if (video != NULL) {
break;
}
}
}
}
if (video == NULL) {
if (driver_name) {
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SDL_SetError("%s not available", driver_name);
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} else {
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SDL_SetError("No available video device");
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}
return -1;
}
_this = video;
_this->name = bootstrap[i]->name;
_this->next_window_id = 1;
/* Set some very sane GL defaults */
_this->gl_config.driver_loaded = 0;
_this->gl_config.dll_handle = NULL;
_this->gl_config.red_size = 3;
_this->gl_config.green_size = 3;
_this->gl_config.blue_size = 2;
_this->gl_config.alpha_size = 0;
_this->gl_config.buffer_size = 0;
_this->gl_config.depth_size = 16;
_this->gl_config.stencil_size = 0;
_this->gl_config.double_buffer = 1;
_this->gl_config.accum_red_size = 0;
_this->gl_config.accum_green_size = 0;
_this->gl_config.accum_blue_size = 0;
_this->gl_config.accum_alpha_size = 0;
_this->gl_config.stereo = 0;
_this->gl_config.multisamplebuffers = 0;
_this->gl_config.multisamplesamples = 0;
_this->gl_config.accelerated = -1; /* not known, don't set */
_this->gl_config.swap_control = -1; /* not known, don't set */
/* Initialize the video subsystem */
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if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
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return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
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SDL_SetError("The video driver did not add any displays");
SDL_VideoQuit();
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return (-1);
}
/* Sort the video modes */
for (i = 0; i < _this->num_displays; ++i) {
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SDL_qsort(_this->displays[i].display_modes,
_this->displays[i].num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
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}
/* Start the event loop */
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if (SDL_StartEventLoop(flags) < 0) {
SDL_VideoQuit();
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return -1;
}
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SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD);
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/* We're ready to go! */
return 0;
}
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const char *
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SDL_GetCurrentVideoDriver()
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{
if (!_this) {
return NULL;
}
return _this->name;
}
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SDL_VideoDevice *
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SDL_GetVideoDevice()
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{
return _this;
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}
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const SDL_VideoInfo *
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SDL_GetVideoInfo(void)
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{
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if (!_this) {
return NULL;
}
return &_this->info;
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}
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void
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SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
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{
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SDL_VideoDisplay display;
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SDL_zero(display);
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if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
display.max_windows = 1;
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SDL_AddVideoDisplay(&display);
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}
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void
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SDL_AddVideoDisplay(SDL_VideoDisplay * display)
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{
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SDL_VideoDisplay *displays;
displays =
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SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
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if (displays) {
displays[_this->num_displays] = *display;
_this->displays = displays;
_this->num_displays++;
}
}
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int
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SDL_GetNumVideoDisplays(void)
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{
if (!_this) {
return 0;
}
return _this->num_displays;
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}
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int
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SDL_SelectVideoDisplay(int index)
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{
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if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return (-1);
}
if (index >= 0) {
if (index >= _this->num_displays) {
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SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
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return -1;
}
_this->current_display = index;
}
return _this->current_display;
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}
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void
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SDL_AddDisplayMode(int display, const SDL_DisplayMode * mode)
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{
SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
modes = SDL_CurrentDisplay.display_modes;
nmodes = SDL_CurrentDisplay.num_display_modes;
for (i = 0; i < nmodes; ++i) {
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if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
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return;
}
}
/* Go ahead and add the new mode */
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modes = SDL_realloc(modes, (nmodes + 1) * sizeof(*mode));
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if (modes) {
SDL_CurrentDisplay.display_modes = modes;
modes[nmodes] = *mode;
SDL_CurrentDisplay.num_display_modes++;
}
}
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int
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SDL_GetNumDisplayModes()
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{
if (_this) {
return SDL_CurrentDisplay.num_display_modes;
}
return 0;
}
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const SDL_DisplayMode *
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SDL_GetDisplayMode(int index)
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{
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if (index < 0 || index >= SDL_GetNumDisplayModes()) {
SDL_SetError("index must be in the range of 0 - %d",
SDL_GetNumDisplayModes());
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return NULL;
}
return &SDL_CurrentDisplay.display_modes[index];
}
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const SDL_DisplayMode *
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SDL_GetDesktopDisplayMode(void)
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{
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if (_this) {
return &SDL_CurrentDisplay.desktop_mode;
}
return NULL;
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}
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const SDL_DisplayMode *
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SDL_GetCurrentDisplayMode(void)
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{
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if (_this) {
return &SDL_CurrentDisplay.current_mode;
}
return NULL;
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}
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SDL_DisplayMode *
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SDL_GetClosestDisplayMode(const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
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{
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Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
if (!_this || !mode || !closest) {
return NULL;
}
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
target_format = SDL_CurrentDisplay.desktop_mode.format;
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
target_refresh_rate = SDL_CurrentDisplay.desktop_mode.refresh_rate;
}
match = NULL;
for (i = 0; i < SDL_CurrentDisplay.num_display_modes; ++i) {
current = &SDL_CurrentDisplay.display_modes[i];
if ((current->w && current->h) &&
(current->w < mode->w || current->h < mode->h)) {
/* Out of sorted modes large enough here */
break;
}
if (!match || current->w < match->w || current->h < match->h) {
match = current;
continue;
}
if (current->format != match->format) {
/* Sorted highest depth to lowest */
if (current->format == target_format ||
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(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format)
&& SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
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match = current;
}
continue;
}
if (current->refresh_rate != match->refresh_rate) {
/* Sorted highest refresh to lowest */
if (current->refresh_rate >= target_refresh_rate) {
match = current;
}
}
}
if (match) {
if (match->format) {
closest->format = match->format;
} else {
closest->format = mode->format;
}
if (match->w && match->h) {
closest->w = match->w;
closest->h = match->h;
} else {
closest->w = mode->w;
closest->h = mode->h;
}
if (match->refresh_rate) {
closest->refresh_rate = match->refresh_rate;
} else {
closest->refresh_rate = mode->refresh_rate;
}
return closest;
}
return NULL;
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}
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int
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SDL_SetDisplayMode(const SDL_DisplayMode * mode)
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{
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SDL_VideoDisplay *display;
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SDL_DisplayMode display_mode;
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int i;
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if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return -1;
}
/* Make sure there's an actual display mode to set */
if (!mode) {
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SDL_SetError("No mode passed to SDL_SetDisplayMode");
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return -1;
}
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display = &SDL_CurrentDisplay;
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display_mode = *mode;
/* Default to the current mode */
if (!display_mode.format) {
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display_mode.format = display->current_mode.format;
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}
if (!display_mode.w) {
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display_mode.w = display->current_mode.w;
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}
if (!display_mode.h) {
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display_mode.h = display->current_mode.h;
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}
if (!display_mode.refresh_rate) {
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display_mode.refresh_rate = display->current_mode.refresh_rate;
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}
/* Get a good video mode, the closest one possible */
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if (!SDL_GetClosestDisplayMode(&display_mode, &display_mode)) {
SDL_SetError("No video mode large enough for %dx%d",
display_mode.w, display_mode.h);
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return -1;
}
/* See if there's anything left to do */
if (SDL_memcmp
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(&display_mode, SDL_GetCurrentDisplayMode(),
sizeof(display_mode)) == 0) {
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return 0;
}
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/* Free any previous window surfaces */
for (i = 0; i < display->num_windows; ++i) {
SDL_Window *window = &display->windows[i];
if (window->shadow) {
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SDL_FreeSurface(window->shadow);
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window->shadow = NULL;
}
if (window->surface) {
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SDL_FreeSurface(window->surface);
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window->surface = NULL;
}
}
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return _this->SetDisplayMode(_this, &display_mode);
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}
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SDL_WindowID
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SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
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{
const Uint32 allowed_flags = (SDL_WINDOW_FULLSCREEN |
SDL_WINDOW_BORDERLESS |
SDL_WINDOW_SHOWN |
SDL_WINDOW_OPENGL |
SDL_WINDOW_RESIZABLE |
SDL_WINDOW_MAXIMIZED |
SDL_WINDOW_MINIMIZED |
SDL_WINDOW_INPUT_GRABBED);
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return 0;
}
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SDL_zero(window);
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window.id = _this->next_window_id++;
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window.title = title ? SDL_strdup(title) : NULL;
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window.x = x;
window.y = y;
window.w = w;
window.h = h;
window.flags = (flags & allowed_flags);
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if (_this->CreateWindow && _this->CreateWindow(_this, &window) < 0) {
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
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SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
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if (!windows) {
if (_this->DestroyWindow) {
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_this->DestroyWindow(_this, &window);
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}
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
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SDL_WindowID
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SDL_CreateWindowFrom(void *data)
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{
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SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
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SDL_SetError("Video subsystem has not been initialized");
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return (0);
}
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SDL_zero(window);
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window.id = _this->next_window_id++;
if (!_this->CreateWindowFrom ||
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_this->CreateWindowFrom(_this, &window, data) < 0) {
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return 0;
}
num_windows = SDL_CurrentDisplay.num_windows;
windows =
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SDL_realloc(SDL_CurrentDisplay.windows,
(num_windows + 1) * sizeof(*windows));
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if (!windows) {
if (_this->DestroyWindow) {
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_this->DestroyWindow(_this, &window);
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}
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if (window.title) {
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SDL_free(window.title);
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}
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return 0;
}
windows[num_windows] = window;
SDL_CurrentDisplay.windows = windows;
SDL_CurrentDisplay.num_windows++;
return window.id;
}
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static __inline__ SDL_Window *
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SDL_GetWindowFromID(SDL_WindowID windowID)
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{
int i, j;
if (!_this) {
return NULL;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id == windowID) {
return window;
}
}
}
return NULL;
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}
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SDL_Window *
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SDL_GetWindowFromSurface(SDL_Surface * surface)
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{
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int i, j;
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if (!_this || !surface) {
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return NULL;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (surface == window->surface || surface == window->shadow) {
return window;
}
}
}
return NULL;
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}
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Uint32
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SDL_GetWindowFlags(SDL_WindowID windowID)
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{
718
SDL_Window *window = SDL_GetWindowFromID(windowID);
719
720
721
722
723
if (!window) {
return 0;
}
return window->flags;
724
725
}
726
void
727
SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)
728
{
729
SDL_Window *window = SDL_GetWindowFromID(windowID);
730
731
732
733
734
if (!window) {
return;
}
if (window->title) {
735
SDL_free(window->title);
736
}
737
window->title = SDL_strdup(title);
738
739
if (_this->SetWindowTitle) {
740
_this->SetWindowTitle(_this, window);
741
}
742
}
743
744
const char *
745
SDL_GetWindowTitle(SDL_WindowID windowID)
746
{
747
SDL_Window *window = SDL_GetWindowFromID(windowID);
748
749
750
751
752
if (!window) {
return NULL;
}
return window->title;
753
754
}
755
void
756
SDL_SetWindowData(SDL_WindowID windowID, void *userdata)
757
{
758
SDL_Window *window = SDL_GetWindowFromID(windowID);
759
760
761
762
763
if (!window) {
return;
}
window->userdata = userdata;
764
765
}
766
void *
767
SDL_GetWindowData(SDL_WindowID windowID)
768
{
769
SDL_Window *window = SDL_GetWindowFromID(windowID);
770
771
772
773
774
if (!window) {
return NULL;
}
return window->userdata;
775
776
}
777
void
778
SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)
779
{
780
SDL_Window *window = SDL_GetWindowFromID(windowID);
781
782
783
784
785
786
787
788
789
if (!window) {
return;
}
window->x = x;
window->y = y;
if (_this->SetWindowPosition) {
790
_this->SetWindowPosition(_this, window);
791
}
792
793
}
794
void
795
SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)
796
{
797
SDL_Window *window = SDL_GetWindowFromID(windowID);
798
799
800
801
802
803
804
805
806
807
if (!window) {
return;
}
if (x) {
*x = window->x;
}
if (y) {
*y = window->y;
}
808
809
}
810
void
811
SDL_SetWindowSize(SDL_WindowID windowID, int w, int h)
812
{
813
SDL_Window *window = SDL_GetWindowFromID(windowID);
814
815
816
817
818
819
820
821
822
if (!window) {
return;
}
window->w = w;
window->h = h;
if (_this->SetWindowSize) {
823
_this->SetWindowSize(_this, window);
824
}
825
826
}
827
void
828
SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *h)
829
{
830
SDL_Window *window = SDL_GetWindowFromID(windowID);
831
832
833
834
835
836
837
838
839
840
if (!window) {
return;
}
if (w) {
*w = window->w;
}
if (h) {
*h = window->h;
}
841
842
}
843
void
844
SDL_ShowWindow(SDL_WindowID windowID)
845
{
846
SDL_Window *window = SDL_GetWindowFromID(windowID);
847
848
849
850
851
852
853
854
if (!window || (window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags |= SDL_WINDOW_SHOWN;
if (_this->ShowWindow) {
855
_this->ShowWindow(_this, window);
856
}
857
858
}
859
void
860
SDL_HideWindow(SDL_WindowID windowID)
861
{
862
SDL_Window *window = SDL_GetWindowFromID(windowID);
863
864
865
866
867
868
869
870
if (!window || !(window->flags & SDL_WINDOW_SHOWN)) {
return;
}
window->flags &= ~SDL_WINDOW_SHOWN;
if (_this->HideWindow) {
871
_this->HideWindow(_this, window);
872
}
873
874
}
875
void
876
SDL_RaiseWindow(SDL_WindowID windowID)
877
{
878
SDL_Window *window = SDL_GetWindowFromID(windowID);
879
880
881
882
883
884
if (!window) {
return;
}
if (_this->RaiseWindow) {
885
_this->RaiseWindow(_this, window);
886
}
887
888
}
889
void
890
SDL_MaximizeWindow(SDL_WindowID windowID)
891
{
892
SDL_Window *window = SDL_GetWindowFromID(windowID);
893
894
895
896
897
898
899
900
if (!window || (window->flags & SDL_WINDOW_MAXIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MAXIMIZED;
if (_this->MaximizeWindow) {
901
_this->MaximizeWindow(_this, window);
902
}
903
904
}
905
void
906
SDL_MinimizeWindow(SDL_WindowID windowID)
907
{
908
SDL_Window *window = SDL_GetWindowFromID(windowID);
909
910
911
912
913
914
915
916
if (!window || (window->flags & SDL_WINDOW_MINIMIZED)) {
return;
}
window->flags |= SDL_WINDOW_MINIMIZED;
if (_this->MinimizeWindow) {
917
_this->MinimizeWindow(_this, window);
918
}
919
920
}
921
void
922
SDL_RestoreWindow(SDL_WindowID windowID)
923
{
924
SDL_Window *window = SDL_GetWindowFromID(windowID);
925
926
927
928
929
930
931
932
933
if (!window
|| (window->flags & (SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED))) {
return;
}
window->flags &= ~(SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED);
if (_this->RestoreWindow) {
934
_this->RestoreWindow(_this, window);
935
}
936
}
937
938
void
939
SDL_SetWindowGrab(SDL_WindowID windowID, int mode)
940
{
941
SDL_Window *window = SDL_GetWindowFromID(windowID);
942
943
944
945
946
947
948
949
950
951
952
953
if (!window || (!!mode == !!(window->flags & SDL_WINDOW_INPUT_GRABBED))) {
return;
}
if (mode) {
window->flags |= SDL_WINDOW_INPUT_GRABBED;
} else {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
}
if (_this->SetWindowGrab) {
954
_this->SetWindowGrab(_this, window);
955
}
956
957
}
958
int
959
SDL_GetWindowGrab(SDL_WindowID windowID)
960
{
961
SDL_Window *window = SDL_GetWindowFromID(windowID);
962
963
964
965
966
967
968
969
970
if (!window) {
return 0;
}
return ((window->flags & SDL_WINDOW_INPUT_GRABBED) != 0);
}
void
971
SDL_DestroyWindow(SDL_WindowID windowID)
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
{
int i, j;
if (!_this) {
return;
}
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = 0; j < display->num_windows; ++j) {
SDL_Window *window = &display->windows[j];
if (window->id != windowID) {
continue;
}
if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
988
_this->SetWindowGrab(_this, window);
989
990
}
if (window->shadow) {
991
SDL_FreeSurface(window->shadow);
992
993
}
if (window->surface) {
994
SDL_FreeSurface(window->surface);
995
996
}
if (_this->DestroyWindow) {
997
_this->DestroyWindow(_this, window);
998
999
}
if (window->title) {
1000
SDL_free(window->title);