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SDL_video.c
2265 lines (1977 loc) · 55.3 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"
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#include "SDL_renderer_sw.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_WIN32
&WIN32_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;
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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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/* Start the event loop */
if (SDL_StartEventLoop(flags) < 0) {
return -1;
}
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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;
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_this->next_object_id = 1;
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/* 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 */
/* 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);
}
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/* The software renderer is always available */
for (i = 0; i < _this->num_displays; ++i) {
if (_this->displays[i].num_render_drivers > 0) {
SDL_AddRenderDriver(i, &SDL_SW_RenderDriver);
}
}
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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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int
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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;
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return SDL_AddVideoDisplay(&display);
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}
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int
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SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
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{
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SDL_VideoDisplay *displays;
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int index = -1;
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displays =
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SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
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if (displays) {
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index = _this->num_displays++;
displays[index] = *display;
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displays[index].device = _this;
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_this->displays = displays;
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} else {
SDL_OutOfMemory();
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}
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return index;
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}
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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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SDL_bool
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SDL_AddDisplayMode(int displayIndex, const SDL_DisplayMode * mode)
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{
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SDL_VideoDisplay *display = &_this->displays[displayIndex];
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SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
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modes = display->display_modes;
nmodes = display->num_display_modes;
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for (i = nmodes; i--;) {
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if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
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return SDL_FALSE;
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}
}
/* Go ahead and add the new mode */
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if (nmodes == display->max_display_modes) {
modes =
SDL_realloc(modes,
(display->max_display_modes + 32) * sizeof(*modes));
if (!modes) {
return SDL_FALSE;
}
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display->display_modes = modes;
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display->max_display_modes += 32;
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}
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modes[nmodes] = *mode;
display->num_display_modes++;
return SDL_TRUE;
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}
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int
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SDL_GetNumDisplayModes()
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{
if (_this) {
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SDL_VideoDisplay *display = &SDL_CurrentDisplay;
if (!display->num_display_modes && _this->GetDisplayModes) {
_this->GetDisplayModes(_this);
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
}
return display->num_display_modes;
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}
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",
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SDL_GetNumDisplayModes() - 1);
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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;
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for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
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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;
}
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closest->driverdata = match->driverdata;
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/* Pick some reasonable defaults if the app and driver don't care */
if (!closest->format) {
closest->format = SDL_PixelFormat_RGB888;
}
if (!closest->w) {
closest->w = 640;
}
if (!closest->h) {
closest->h = 480;
}
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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, ncolors;
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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 (!mode) {
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mode = SDL_GetDesktopDisplayMode();
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}
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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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/* Actually change the display mode */
if (_this->SetDisplayMode(_this, &display_mode) < 0) {
return -1;
}
display->current_mode = display_mode;
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/* Set up a palette, if necessary */
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if (SDL_ISPIXELFORMAT_INDEXED(display_mode.format)) {
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ncolors = (1 << SDL_BITSPERPIXEL(display_mode.format));
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} else {
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ncolors = 0;
}
if ((!ncolors && display->palette) || (ncolors && !display->palette)
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|| (ncolors && ncolors != display->palette->ncolors)) {
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if (display->palette) {
SDL_FreePalette(display->palette);
display->palette = NULL;
}
if (ncolors) {
display->palette = SDL_AllocPalette(ncolors);
if (!display->palette) {
return -1;
}
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SDL_DitherColors(display->palette->colors,
SDL_BITSPERPIXEL(display_mode.format));
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}
}
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/* Move any fullscreen windows into position */
for (i = 0; i < display->num_windows; ++i) {
SDL_Window *window = &display->windows[i];
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if (FULLSCREEN_VISIBLE(window)) {
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SDL_SetWindowPosition(window->id,
((display_mode.w - window->w) / 2),
((display_mode.h - window->h) / 2));
}
}
return 0;
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}
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int
SDL_SetFullscreenDisplayMode(const SDL_DisplayMode * mode)
{
SDL_VideoDisplay *display;
int i;
if (!_this) {
SDL_SetError("Video subsystem has not been initialized");
return -1;
}
display = &SDL_CurrentDisplay;
if (mode) {
SDL_GetClosestDisplayMode(mode, &display->desired_mode);
display->fullscreen_mode = &display->desired_mode;
} else {
display->fullscreen_mode = NULL;
}
/* Actually set the mode if we have a fullscreen window visible */
for (i = 0; i < display->num_windows; ++i) {
SDL_Window *window = &display->windows[i];
if (FULLSCREEN_VISIBLE(window)) {
return SDL_SetDisplayMode(display->fullscreen_mode);
}
}
return 0;
}
const SDL_DisplayMode *
SDL_GetFullscreenDisplayMode(void)
{
if (_this) {
return SDL_CurrentDisplay.fullscreen_mode;
}
return NULL;
}
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int
SDL_SetDisplayPalette(const SDL_Color * colors, int firstcolor, int ncolors)
{
SDL_Palette *palette;
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int status = 0;
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if (!_this) {
SDL_SetError("Video subsystem has not been initialized");
return -1;
}
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palette = SDL_CurrentDisplay.palette;
if (!palette) {
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SDL_SetError("Display mode does not have a palette");
return -1;
}
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status = SDL_SetPaletteColors(palette, colors, firstcolor, ncolors);
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if (_this->SetDisplayPalette) {
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if (_this->SetDisplayPalette(_this, palette) < 0) {
status = -1;
}
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}
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return status;
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}
int
SDL_GetDisplayPalette(SDL_Color * colors, int firstcolor, int ncolors)
{
SDL_Palette *palette;
if (!_this) {
SDL_SetError("Video subsystem has not been initialized");
return -1;
}
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palette = SDL_CurrentDisplay.palette;
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if (!palette->ncolors) {
SDL_SetError("Display mode does not have a palette");
return -1;
}
if (firstcolor < 0 || (firstcolor + ncolors) > palette->ncolors) {
SDL_SetError("Palette indices are out of range");
return -1;
}
SDL_memcpy(colors, &palette->colors[firstcolor],
ncolors * sizeof(*colors));
return 0;
}
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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_OPENGL |
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SDL_WINDOW_SHOWN |
SDL_WINDOW_BORDERLESS |
711
712
713
714
SDL_WINDOW_RESIZABLE |
SDL_WINDOW_MAXIMIZED |
SDL_WINDOW_MINIMIZED |
SDL_WINDOW_INPUT_GRABBED);
715
SDL_VideoDisplay *display;
716
717
718
719
720
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
721
SDL_SetError("Video subsystem has not been initialized");
722
723
724
return 0;
}
725
SDL_zero(window);
726
window.id = _this->next_object_id++;
727
window.title = title ? SDL_strdup(title) : NULL;
728
729
window.x = x;
window.y = y;
730
731
732
window.w = w;
window.h = h;
window.flags = (flags & allowed_flags);
733
window.display = _this->current_display;
734
735
if (_this->CreateWindow && _this->CreateWindow(_this, &window) < 0) {
736
if (window.title) {
737
SDL_free(window.title);
738
}
739
740
741
return 0;
}
742
743
display = &SDL_CurrentDisplay;
num_windows = display->num_windows;
744
windows =
745
SDL_realloc(display->windows, (num_windows + 1) * sizeof(*windows));
746
747
if (!windows) {
if (_this->DestroyWindow) {
748
_this->DestroyWindow(_this, &window);
749
}
750
if (window.title) {
751
SDL_free(window.title);
752
}
753
754
755
return 0;
}
windows[num_windows] = window;
756
757
758
759
760
761
762
763
764
765
766
767
768
769
display->windows = windows;
display->num_windows++;
if (FULLSCREEN_VISIBLE(&window)) {
/* Hide any other fullscreen windows */
int i;
for (i = 0; i < display->num_windows; ++i) {
SDL_Window *other = &display->windows[i];
if (other->id != window.id && FULLSCREEN_VISIBLE(other)) {
SDL_MinimizeWindow(other->id);
}
}
SDL_SetDisplayMode(display->fullscreen_mode);
}
770
771
772
return window.id;
}
773
774
SDL_WindowID
775
SDL_CreateWindowFrom(const void *data)
776
{
777
SDL_VideoDisplay *display;
778
779
780
781
782
SDL_Window window;
int num_windows;
SDL_Window *windows;
if (!_this) {
783
SDL_SetError("Video subsystem has not been initialized");
784
785
786
return (0);
}
787
SDL_zero(window);
788
window.id = _this->next_object_id++;
789
window.display = _this->current_display;
790
791
if (!_this->CreateWindowFrom ||
792
_this->CreateWindowFrom(_this, &window, data) < 0) {
793
794
795
return 0;
}
796
797
display = &SDL_CurrentDisplay;
num_windows = display->num_windows;
798
windows =
799
SDL_realloc(display->windows, (num_windows + 1) * sizeof(*windows));
800
801
if (!windows) {
if (_this->DestroyWindow) {
802
_this->DestroyWindow(_this, &window);
803
}
804
if (window.title) {
805
SDL_free(window.title);
806
}
807
808
809
return 0;
}
windows[num_windows] = window;
810
811
display->windows = windows;
display->num_windows++;
812
813
814
return window.id;
}
815
816
SDL_Window *
817
SDL_GetWindowFromID(SDL_WindowID windowID)
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
{
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;
835
836
}
837
838
839
840
841
842
843
844
845
SDL_VideoDisplay *
SDL_GetDisplayFromWindow(SDL_Window * window)
{
if (!_this) {
return NULL;
}
return &_this->displays[window->display];
}
846
Uint32
847
SDL_GetWindowFlags(SDL_WindowID windowID)
848
{
849
SDL_Window *window = SDL_GetWindowFromID(windowID);
850
851
852
853
854
if (!window) {
return 0;
}
return window->flags;
855
856
}
857
void
858
SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)
859
{
860
SDL_Window *window = SDL_GetWindowFromID(windowID);
861
862
863
864
865
if (!window) {
return;
}
if (window->title) {
866
SDL_free(window->title);
867
}
868
window->title = SDL_strdup(title);
869
870
if (_this->SetWindowTitle) {
871
_this->SetWindowTitle(_this, window);
872
}
873
}
874
875
const char *
876
SDL_GetWindowTitle(SDL_WindowID windowID)
877
{
878
SDL_Window *window = SDL_GetWindowFromID(windowID);
879
880
881
882
883
if (!window) {
return NULL;
}
return window->title;
884
885
}
886
void
887
SDL_SetWindowData(SDL_WindowID windowID, void *userdata)
888
{
889
SDL_Window *window = SDL_GetWindowFromID(windowID);
890
891
892
893
894
if (!window) {
return;
}
window->userdata = userdata;
895
896
}
897
void *
898
SDL_GetWindowData(SDL_WindowID windowID)
899
{
900
SDL_Window *window = SDL_GetWindowFromID(windowID);
901
902
903
904
905
if (!window) {
return NULL;
}
return window->userdata;
906
907
}
908
void
909
SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)
910
{
911
SDL_Window *window = SDL_GetWindowFromID(windowID);
912
913
914
915
916
if (!window) {
return;
}
917
918
919
920
921
922
if (x != SDL_WINDOWPOS_UNDEFINED) {
window->x = x;
}
if (y != SDL_WINDOWPOS_UNDEFINED) {
window->y = y;
}
923
924
if (_this->SetWindowPosition) {
925
_this->SetWindowPosition(_this, window);
926
}
927
928
}
929
void
930
SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)
931
{
932
SDL_Window *window = SDL_GetWindowFromID(windowID);
933
934
935
936
937
938
939
940
941
942
if (!window) {
return;
}
if (x) {
*x = window->x;
}
if (y) {
*y = window->y;
}
943
944
}
945
void
946
SDL_SetWindowSize(SDL_WindowID windowID, int w, int h)
947
{
948
SDL_Window *window = SDL_GetWindowFromID(windowID);
949
950
951
952
953
954
955
956
957
if (!window) {
return;
}
window->w = w;
window->h = h;
if (_this->SetWindowSize) {
958
_this->SetWindowSize(_this, window);
959
}
960
961
}
962
void
963
SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *h)
964
{
965
SDL_Window *window = SDL_GetWindowFromID(windowID);
966
967
968
969
970
971
972
973
974
975
if (!window) {
return;
}
if (w) {
*w = window->w;
}
if (h) {
*h = window->h;
}
976
977
}
978
void
979
SDL_ShowWindow(SDL_WindowID windowID)
980
{
981
SDL_Window *window = SDL_GetWindowFromID(windowID);
982
983
984
985
986
if (!window || (window->flags & SDL_WINDOW_SHOWN)) {
return;
}
987
SDL_SendWindowEvent(window->id, SDL_WINDOWEVENT_SHOWN, 0, 0);
988
989
if (_this->ShowWindow) {
990
_this->ShowWindow(_this, window);
991
}
992
993
}
994
void
995
SDL_HideWindow(SDL_WindowID windowID)
996
{
997
SDL_Window *window = SDL_GetWindowFromID(windowID);
998
999
1000
if (!window || !(window->flags & SDL_WINDOW_SHOWN)) {
return;