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SDL-mirror/src/video/SDL_video.c
Sam Lantinga 0eb0a30eca Fixed bug 1167 (SDL_WINDOWPOS_CENTERED doesn't work if used right after fullscreen -> windowed switch) 
The top level code handles SDL_WINDOWPOS_CENTERED now, and the Cocoa SetWindowPosition call will clear the moveHack before adjusting the window position.
2011-03-11 16:54:43 -08:00

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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2011 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
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
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
/* The high-level video driver subsystem */
#include "SDL.h"
#include "SDL_video.h"
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
#include "SDL_rect_c.h"
#include "../events/SDL_events_c.h"
#if SDL_VIDEO_OPENGL
#include "SDL_opengl.h"
#endif /* SDL_VIDEO_OPENGL */
#if SDL_VIDEO_OPENGL_ES
#include "SDL_opengles.h"
#endif /* SDL_VIDEO_OPENGL_ES */
#if SDL_VIDEO_OPENGL_ES2
#include "SDL_opengles2.h"
#endif /* SDL_VIDEO_OPENGL_ES2 */
#include "SDL_syswm.h"
/* On Windows, windows.h defines CreateWindow */
#ifdef CreateWindow
#undef CreateWindow
#endif
/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
#if SDL_VIDEO_DRIVER_COCOA
&COCOA_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_X11
&X11_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_DIRECTFB
&DirectFB_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_WINDOWS
&WINDOWS_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_BWINDOW
&BWINDOW_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_PANDORA
&PND_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_NDS
&NDS_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_UIKIT
&UIKIT_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_ANDROID
&Android_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_DUMMY
&DUMMY_bootstrap,
#endif
NULL
};
static SDL_VideoDevice *_this = NULL;
#define CHECK_WINDOW_MAGIC(window, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
if (!window || window->magic != &_this->window_magic) { \
SDL_SetError("Invalid window"); \
return retval; \
}
#define CHECK_DISPLAY_INDEX(displayIndex, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
if (displayIndex < 0 || displayIndex >= _this->num_displays) { \
SDL_SetError("displayIndex must be in the range 0 - %d", \
_this->num_displays - 1); \
return retval; \
}
/* Support for framebuffer emulation using an accelerated renderer */
#define SDL_WINDOWTEXTUREDATA "_SDL_WindowTextureData"
typedef struct {
SDL_Renderer *renderer;
SDL_Texture *texture;
void *pixels;
int pitch;
int bytes_per_pixel;
} SDL_WindowTextureData;
static SDL_bool
ShouldUseTextureFramebuffer()
{
const char *hint;
/* If there's no native framebuffer support then there's no option */
if (!_this->CreateWindowFramebuffer) {
return SDL_TRUE;
}
/* If the user has specified a software renderer we can't use a
texture framebuffer, or renderer creation will go recursive.
*/
hint = SDL_GetHint(SDL_HINT_RENDER_DRIVER);
if (hint && SDL_strcasecmp(hint, "software") == 0) {
return SDL_FALSE;
}
/* See if the user or application wants a specific behavior */
hint = SDL_GetHint(SDL_HINT_FRAMEBUFFER_ACCELERATION);
if (hint) {
if (*hint == '0') {
return SDL_FALSE;
} else {
return SDL_TRUE;
}
}
/* Each platform has different performance characteristics */
#if defined(__WIN32__)
/* GDI BitBlt() is way faster than Direct3D dynamic textures right now.
*/
return SDL_FALSE;
#elif defined(__MACOSX__)
/* Mac OS X uses OpenGL as the native fast path */
return SDL_TRUE;
#elif defined(__LINUX__)
/* Properly configured OpenGL drivers are faster than MIT-SHM */
#if SDL_VIDEO_OPENGL
/* Ugh, find a way to cache this value! */
{
SDL_Window *window;
SDL_GLContext context;
SDL_bool hasAcceleratedOpenGL = SDL_FALSE;
window = SDL_CreateWindow("OpenGL test", -32, -32, 32, 32, SDL_WINDOW_OPENGL|SDL_WINDOW_HIDDEN);
if (window) {
context = SDL_GL_CreateContext(window);
if (context) {
const GLubyte *(APIENTRY * glGetStringFunc) (GLenum);
const char *vendor = NULL;
glGetStringFunc = SDL_GL_GetProcAddress("glGetString");
if (glGetStringFunc) {
vendor = (const char *) glGetStringFunc(GL_VENDOR);
}
/* Add more vendors here at will... */
if (vendor &&
(SDL_strstr(vendor, "ATI Technologies") ||
SDL_strstr(vendor, "NVIDIA"))) {
hasAcceleratedOpenGL = SDL_TRUE;
}
SDL_GL_DeleteContext(context);
}
SDL_DestroyWindow(window);
}
return hasAcceleratedOpenGL;
}
#else
return SDL_FALSE;
#endif
#else
/* Play it safe, assume that if there is a framebuffer driver that it's
optimized for the current platform.
*/
return SDL_FALSE;
#endif
}
static int
SDL_CreateWindowTexture(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
{
SDL_WindowTextureData *data;
SDL_RendererInfo info;
Uint32 i;
data = SDL_GetWindowData(window, SDL_WINDOWTEXTUREDATA);
if (!data) {
SDL_Renderer *renderer = NULL;
SDL_RendererInfo info;
int i;
const char *hint = SDL_GetHint(SDL_HINT_FRAMEBUFFER_ACCELERATION);
/* Check to see if there's a specific driver requested */
if (hint && *hint != '0' && *hint != '1' &&
SDL_strcasecmp(hint, "software") != 0) {
for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
SDL_GetRenderDriverInfo(i, &info);
if (SDL_strcasecmp(info.name, hint) == 0) {
renderer = SDL_CreateRenderer(window, i, 0);
break;
}
}
}
if (!renderer) {
for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
SDL_GetRenderDriverInfo(i, &info);
if (SDL_strcmp(info.name, "software") != 0) {
renderer = SDL_CreateRenderer(window, i, 0);
if (renderer) {
break;
}
}
}
}
if (!renderer) {
return -1;
}
/* Create the data after we successfully create the renderer (bug #1116) */
data = (SDL_WindowTextureData *)SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_DestroyRenderer(renderer);
SDL_OutOfMemory();
return -1;
}
SDL_SetWindowData(window, SDL_WINDOWTEXTUREDATA, data);
data->renderer = renderer;
}
/* Free any old texture and pixel data */
if (data->texture) {
SDL_DestroyTexture(data->texture);
data->texture = NULL;
}
if (data->pixels) {
SDL_free(data->pixels);
data->pixels = NULL;
}
if (SDL_GetRendererInfo(data->renderer, &info) < 0) {
return -1;
}
/* Find the first format without an alpha channel */
*format = info.texture_formats[0];
for (i = 0; i < info.num_texture_formats; ++i) {
if (!SDL_ISPIXELFORMAT_FOURCC(info.texture_formats[i]) &&
!SDL_ISPIXELFORMAT_ALPHA(info.texture_formats[i])) {
*format = info.texture_formats[i];
break;
}
}
data->texture = SDL_CreateTexture(data->renderer, *format,
SDL_TEXTUREACCESS_STREAMING,
window->w, window->h);
if (!data->texture) {
return -1;
}
/* Create framebuffer data */
data->bytes_per_pixel = SDL_BYTESPERPIXEL(*format);
data->pitch = (((window->w * data->bytes_per_pixel) + 3) & ~3);
data->pixels = SDL_malloc(window->h * data->pitch);
if (!data->pixels) {
SDL_OutOfMemory();
return -1;
}
*pixels = data->pixels;
*pitch = data->pitch;
/* Make sure we're not double-scaling the viewport */
SDL_RenderSetViewport(data->renderer, NULL);
return 0;
}
static int
SDL_UpdateWindowTexture(_THIS, SDL_Window * window, SDL_Rect * rects, int numrects)
{
SDL_WindowTextureData *data;
SDL_Rect rect;
void *src;
data = SDL_GetWindowData(window, SDL_WINDOWTEXTUREDATA);
if (!data || !data->texture) {
SDL_SetError("No window texture data");
return -1;
}
/* Update a single rect that contains subrects for best DMA performance */
if (SDL_GetSpanEnclosingRect(window->w, window->h, numrects, rects, &rect)) {
src = (void *)((Uint8 *)data->pixels +
rect.y * data->pitch +
rect.x * data->bytes_per_pixel);
if (SDL_UpdateTexture(data->texture, &rect, src, data->pitch) < 0) {
return -1;
}
if (SDL_RenderCopy(data->renderer, data->texture, NULL, NULL) < 0) {
return -1;
}
SDL_RenderPresent(data->renderer);
}
return 0;
}
static void
SDL_DestroyWindowTexture(_THIS, SDL_Window * window)
{
SDL_WindowTextureData *data;
data = SDL_SetWindowData(window, SDL_WINDOWTEXTUREDATA, NULL);
if (!data) {
return;
}
if (data->texture) {
SDL_DestroyTexture(data->texture);
}
if (data->renderer) {
SDL_DestroyRenderer(data->renderer);
}
if (data->pixels) {
SDL_free(data->pixels);
}
SDL_free(data);
}
static int
cmpmodes(const void *A, const void *B)
{
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;
}
if (SDL_BITSPERPIXEL(a.format) != SDL_BITSPERPIXEL(b.format)) {
return SDL_BITSPERPIXEL(b.format) - SDL_BITSPERPIXEL(a.format);
}
if (SDL_PIXELLAYOUT(a.format) != SDL_PIXELLAYOUT(b.format)) {
return SDL_PIXELLAYOUT(b.format) - SDL_PIXELLAYOUT(a.format);
}
if (a.refresh_rate != b.refresh_rate) {
return b.refresh_rate - a.refresh_rate;
}
return 0;
}
static void
SDL_UninitializedVideo()
{
SDL_SetError("Video subsystem has not been initialized");
}
int
SDL_GetNumVideoDrivers(void)
{
return SDL_arraysize(bootstrap) - 1;
}
const char *
SDL_GetVideoDriver(int index)
{
if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
return bootstrap[index]->name;
}
return NULL;
}
/*
* Initialize the video and event subsystems -- determine native pixel format
*/
int
SDL_VideoInit(const char *driver_name)
{
SDL_VideoDevice *video;
int index;
int i;
/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
SDL_VideoQuit();
}
/* Start the event loop */
if (SDL_StartEventLoop() < 0 ||
SDL_KeyboardInit() < 0 ||
SDL_MouseInit() < 0 ||
SDL_TouchInit() < 0 ||
SDL_QuitInit() < 0) {
return -1;
}
/* Select the proper video driver */
index = 0;
video = NULL;
if (driver_name == NULL) {
driver_name = SDL_getenv("SDL_VIDEODRIVER");
}
if (driver_name != NULL) {
for (i = 0; bootstrap[i]; ++i) {
if (SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) {
video = bootstrap[i]->create(index);
break;
}
}
} else {
for (i = 0; bootstrap[i]; ++i) {
if (bootstrap[i]->available()) {
video = bootstrap[i]->create(index);
if (video != NULL) {
break;
}
}
}
}
if (video == NULL) {
if (driver_name) {
SDL_SetError("%s not available", driver_name);
} else {
SDL_SetError("No available video device");
}
return -1;
}
_this = video;
_this->name = bootstrap[i]->name;
_this->next_object_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.retained_backing = 1;
_this->gl_config.accelerated = -1; /* accelerated or not, both are fine */
#if SDL_VIDEO_OPENGL
_this->gl_config.major_version = 2;
_this->gl_config.minor_version = 1;
#elif SDL_VIDEO_OPENGL_ES
_this->gl_config.major_version = 1;
_this->gl_config.minor_version = 1;
#elif SDL_VIDEO_OPENGL_ES2
_this->gl_config.major_version = 2;
_this->gl_config.minor_version = 0;
#endif
/* Initialize the video subsystem */
if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
SDL_SetError("The video driver did not add any displays");
SDL_VideoQuit();
return (-1);
}
/* Add the renderer framebuffer emulation if desired */
if (ShouldUseTextureFramebuffer()) {
_this->CreateWindowFramebuffer = SDL_CreateWindowTexture;
_this->UpdateWindowFramebuffer = SDL_UpdateWindowTexture;
_this->DestroyWindowFramebuffer = SDL_DestroyWindowTexture;
}
/* We're ready to go! */
return 0;
}
const char *
SDL_GetCurrentVideoDriver()
{
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
return _this->name;
}
SDL_VideoDevice *
SDL_GetVideoDevice(void)
{
return _this;
}
int
SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
{
SDL_VideoDisplay display;
SDL_zero(display);
if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
return SDL_AddVideoDisplay(&display);
}
int
SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
{
SDL_VideoDisplay *displays;
int index = -1;
displays =
SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
if (displays) {
index = _this->num_displays++;
displays[index] = *display;
displays[index].device = _this;
_this->displays = displays;
} else {
SDL_OutOfMemory();
}
return index;
}
int
SDL_GetNumVideoDisplays(void)
{
if (!_this) {
SDL_UninitializedVideo();
return 0;
}
return _this->num_displays;
}
int
SDL_GetIndexOfDisplay(SDL_VideoDisplay *display)
{
int displayIndex;
for (displayIndex = 0; displayIndex < _this->num_displays; ++displayIndex) {
if (display == &_this->displays[displayIndex]) {
return displayIndex;
}
}
/* Couldn't find the display, just use index 0 */
return 0;
}
int
SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect)
{
CHECK_DISPLAY_INDEX(displayIndex, -1);
if (rect) {
SDL_VideoDisplay *display = &_this->displays[displayIndex];
if (_this->GetDisplayBounds) {
if (_this->GetDisplayBounds(_this, display, rect) == 0) {
return 0;
}
}
/* Assume that the displays are left to right */
if (displayIndex == 0) {
rect->x = 0;
rect->y = 0;
} else {
SDL_GetDisplayBounds(displayIndex-1, rect);
rect->x += rect->w;
}
rect->w = display->desktop_mode.w;
rect->h = display->desktop_mode.h;
}
return 0;
}
SDL_bool
SDL_AddDisplayMode(SDL_VideoDisplay * display, const SDL_DisplayMode * mode)
{
SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
modes = display->display_modes;
nmodes = display->num_display_modes;
for (i = nmodes; i--;) {
if (SDL_memcmp(mode, &modes[i], sizeof(*mode)) == 0) {
return SDL_FALSE;
}
}
/* Go ahead and add the new mode */
if (nmodes == display->max_display_modes) {
modes =
SDL_realloc(modes,
(display->max_display_modes + 32) * sizeof(*modes));
if (!modes) {
return SDL_FALSE;
}
display->display_modes = modes;
display->max_display_modes += 32;
}
modes[nmodes] = *mode;
display->num_display_modes++;
/* Re-sort video modes */
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
return SDL_TRUE;
}
SDL_VideoDisplay *
SDL_GetFirstDisplay(void)
{
return &_this->displays[0];
}
static int
SDL_GetNumDisplayModesForDisplay(SDL_VideoDisplay * display)
{
if (!display->num_display_modes && _this->GetDisplayModes) {
_this->GetDisplayModes(_this, display);
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
}
return display->num_display_modes;
}
int
SDL_GetNumDisplayModes(int displayIndex)
{
CHECK_DISPLAY_INDEX(displayIndex, -1);
return SDL_GetNumDisplayModesForDisplay(&_this->displays[displayIndex]);
}
int
SDL_GetDisplayMode(int displayIndex, int index, SDL_DisplayMode * mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (index < 0 || index >= SDL_GetNumDisplayModesForDisplay(display)) {
SDL_SetError("index must be in the range of 0 - %d",
SDL_GetNumDisplayModesForDisplay(display) - 1);
return -1;
}
if (mode) {
*mode = display->display_modes[index];
}
return 0;
}
int
SDL_GetDesktopDisplayMode(int displayIndex, SDL_DisplayMode * mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (mode) {
*mode = display->desktop_mode;
}
return 0;
}
int
SDL_GetCurrentDisplayMode(int displayIndex, SDL_DisplayMode * mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (mode) {
*mode = display->current_mode;
}
return 0;
}
static SDL_DisplayMode *
SDL_GetClosestDisplayModeForDisplay(SDL_VideoDisplay * display,
const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
{
Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
if (!mode || !closest) {
SDL_SetError("Missing desired mode or closest mode parameter");
return NULL;
}
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
target_format = display->desktop_mode.format;
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
target_refresh_rate = display->desktop_mode.refresh_rate;
}
match = NULL;
for (i = 0; i < SDL_GetNumDisplayModesForDisplay(display); ++i) {
current = &display->display_modes[i];
if (current->w && (current->w < mode->w)) {
/* Out of sorted modes large enough here */
break;
}
if (current->h && (current->h < mode->h)) {
if (current->w && (current->w == mode->w)) {
/* Out of sorted modes large enough here */
break;
}
/* Wider, but not tall enough, due to a different
aspect ratio. This mode must be skipped, but closer
modes may still follow. */
continue;
}
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 ||
(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format)
&& SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
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;
}
closest->driverdata = match->driverdata;
/*
* 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;
}
return closest;
}
return NULL;
}
SDL_DisplayMode *
SDL_GetClosestDisplayMode(int displayIndex,
const SDL_DisplayMode * mode,
SDL_DisplayMode * closest)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, NULL);
display = &_this->displays[displayIndex];
return SDL_GetClosestDisplayModeForDisplay(display, mode, closest);
}
int
SDL_SetDisplayModeForDisplay(SDL_VideoDisplay * display, const SDL_DisplayMode * mode)
{
SDL_DisplayMode display_mode;
SDL_DisplayMode current_mode;
if (mode) {
display_mode = *mode;
/* Default to the current mode */
if (!display_mode.format) {
display_mode.format = display->current_mode.format;
}
if (!display_mode.w) {
display_mode.w = display->current_mode.w;
}
if (!display_mode.h) {
display_mode.h = display->current_mode.h;
}
if (!display_mode.refresh_rate) {
display_mode.refresh_rate = display->current_mode.refresh_rate;
}
/* Get a good video mode, the closest one possible */
if (!SDL_GetClosestDisplayModeForDisplay(display, &display_mode, &display_mode)) {
SDL_SetError("No video mode large enough for %dx%d",
display_mode.w, display_mode.h);
return -1;
}
} else {
display_mode = display->desktop_mode;
}
/* See if there's anything left to do */
current_mode = display->current_mode;
if (SDL_memcmp(&display_mode, &current_mode, sizeof(display_mode)) == 0) {
return 0;
}
/* Actually change the display mode */
if (!_this->SetDisplayMode) {
SDL_SetError("Video driver doesn't support changing display mode");
return -1;
}
if (_this->SetDisplayMode(_this, display, &display_mode) < 0) {
return -1;
}
display->current_mode = display_mode;
return 0;
}
int
SDL_GetWindowDisplay(SDL_Window * window)
{
int displayIndex;
int i, dist;
int closest = -1;
int closest_dist = 0x7FFFFFFF;
SDL_Point center;
SDL_Point delta;
SDL_Rect rect;
CHECK_WINDOW_MAGIC(window, -1);
if (SDL_WINDOWPOS_ISUNDEFINED(window->x) ||
SDL_WINDOWPOS_ISCENTERED(window->x)) {
displayIndex = (window->x & 0xFFFF);
if (displayIndex >= _this->num_displays) {
displayIndex = 0;
}
return displayIndex;
}
if (SDL_WINDOWPOS_ISUNDEFINED(window->y) ||
SDL_WINDOWPOS_ISCENTERED(window->y)) {
displayIndex = (window->y & 0xFFFF);
if (displayIndex >= _this->num_displays) {
displayIndex = 0;
}
return displayIndex;
}
/* Find the display containing the window */
center.x = window->x + window->w / 2;
center.y = window->y + window->h / 2;
for (i = 0; i < _this->num_displays; ++i) {
SDL_VideoDisplay *display = &_this->displays[i];
SDL_GetDisplayBounds(i, &rect);
if (display->fullscreen_window == window || SDL_EnclosePoints(&center, 1, &rect, NULL)) {
return i;
}
delta.x = center.x - (rect.x + rect.w / 2);
delta.y = center.y - (rect.y + rect.h / 2);
dist = (delta.x*delta.x + delta.y*delta.y);
if (dist < closest_dist) {
closest = i;
closest_dist = dist;
}
}
if (closest < 0) {
SDL_SetError("Couldn't find any displays");
}
return closest;
}
SDL_VideoDisplay *
SDL_GetDisplayForWindow(SDL_Window *window)
{
int displayIndex = SDL_GetWindowDisplay(window);
if (displayIndex >= 0) {
return &_this->displays[displayIndex];
} else {
return NULL;
}
}
int
SDL_SetWindowDisplayMode(SDL_Window * window, const SDL_DisplayMode * mode)
{
CHECK_WINDOW_MAGIC(window, -1);
if (mode) {
window->fullscreen_mode = *mode;
} else {
SDL_zero(window->fullscreen_mode);
}
return 0;
}
int
SDL_GetWindowDisplayMode(SDL_Window * window, SDL_DisplayMode * mode)
{
SDL_DisplayMode fullscreen_mode;
CHECK_WINDOW_MAGIC(window, -1);
fullscreen_mode = window->fullscreen_mode;
if (!fullscreen_mode.w) {
fullscreen_mode.w = window->w;
}
if (!fullscreen_mode.h) {
fullscreen_mode.h = window->h;
}
if (!SDL_GetClosestDisplayModeForDisplay(SDL_GetDisplayForWindow(window),
&fullscreen_mode,
&fullscreen_mode)) {
SDL_SetError("Couldn't find display mode match");
return -1;
}
if (mode) {
*mode = fullscreen_mode;
}
return 0;
}
Uint32
SDL_GetWindowPixelFormat(SDL_Window * window)
{
SDL_VideoDisplay *display;
CHECK_WINDOW_MAGIC(window, SDL_PIXELFORMAT_UNKNOWN);
display = SDL_GetDisplayForWindow(window);
return display->current_mode.format;
}
static void
SDL_UpdateFullscreenMode(SDL_Window * window, SDL_bool fullscreen)
{
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
SDL_Window *other;
if (fullscreen) {
/* Hide any other fullscreen windows */
if (display->fullscreen_window &&
display->fullscreen_window != window) {
SDL_MinimizeWindow(display->fullscreen_window);
}
}
/* See if anything needs to be done now */
if ((display->fullscreen_window == window) == fullscreen) {
return;
}
/* See if there are any fullscreen windows */
for (other = _this->windows; other; other = other->next) {
SDL_bool setDisplayMode = SDL_FALSE;
if (other == window) {
setDisplayMode = fullscreen;
} else if (FULLSCREEN_VISIBLE(other) &&
SDL_GetDisplayForWindow(other) == display) {
setDisplayMode = SDL_TRUE;
}
if (setDisplayMode) {
SDL_DisplayMode fullscreen_mode;
if (SDL_GetWindowDisplayMode(other, &fullscreen_mode) == 0) {
SDL_bool resized = SDL_TRUE;
if (other->w == fullscreen_mode.w && other->h == fullscreen_mode.h) {
resized = SDL_FALSE;
}
SDL_SetDisplayModeForDisplay(display, &fullscreen_mode);
if (_this->SetWindowFullscreen) {
_this->SetWindowFullscreen(_this, other, display, SDL_TRUE);
}
display->fullscreen_window = other;
/* Generate a mode change event here */
if (resized) {
SDL_SendWindowEvent(other, SDL_WINDOWEVENT_RESIZED,
fullscreen_mode.w, fullscreen_mode.h);
} else {
SDL_OnWindowResized(other);
}
return;
}
}
}
/* Nope, restore the desktop mode */
SDL_SetDisplayModeForDisplay(display, NULL);
if (_this->SetWindowFullscreen) {
_this->SetWindowFullscreen(_this, window, display, SDL_FALSE);
}
display->fullscreen_window = NULL;
/* Generate a mode change event here */
SDL_OnWindowResized(window);
}
#define CREATE_FLAGS \
(SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE)
static void
SDL_FinishWindowCreation(SDL_Window *window, Uint32 flags)
{
window->windowed.x = window->x;
window->windowed.y = window->y;
window->windowed.w = window->w;
window->windowed.h = window->h;
if (flags & SDL_WINDOW_MAXIMIZED) {
SDL_MaximizeWindow(window);
}
if (flags & SDL_WINDOW_MINIMIZED) {
SDL_MinimizeWindow(window);
}
if (flags & SDL_WINDOW_FULLSCREEN) {
SDL_SetWindowFullscreen(window, SDL_TRUE);
}
if (flags & SDL_WINDOW_INPUT_GRABBED) {
SDL_SetWindowGrab(window, SDL_TRUE);
}
if (!(flags & SDL_WINDOW_HIDDEN)) {
SDL_ShowWindow(window);
}
}
SDL_Window *
SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)
{
SDL_Window *window;
if (!_this) {
/* Initialize the video system if needed */
if (SDL_VideoInit(NULL) < 0) {
return NULL;
}
}
/* Some platforms have OpenGL enabled by default */
#if (SDL_VIDEO_OPENGL && __MACOSX__) || SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
flags |= SDL_WINDOW_OPENGL;
#endif
if (flags & SDL_WINDOW_OPENGL) {
if (!_this->GL_CreateContext) {
SDL_SetError("No OpenGL support in video driver");
return NULL;
}
SDL_GL_LoadLibrary(NULL);
}
window = (SDL_Window *)SDL_calloc(1, sizeof(*window));
window->magic = &_this->window_magic;
window->id = _this->next_object_id++;
window->x = x;
window->y = y;
window->w = w;
window->h = h;
if (SDL_WINDOWPOS_ISUNDEFINED(x) || SDL_WINDOWPOS_ISUNDEFINED(y) ||
SDL_WINDOWPOS_ISCENTERED(x) || SDL_WINDOWPOS_ISCENTERED(y)) {
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
int displayIndex;
SDL_Rect bounds;
displayIndex = SDL_GetIndexOfDisplay(display);
SDL_GetDisplayBounds(displayIndex, &bounds);
if (SDL_WINDOWPOS_ISUNDEFINED(x) || SDL_WINDOWPOS_ISCENTERED(x)) {
window->x = bounds.x + (bounds.w - w) / 2;
}
if (SDL_WINDOWPOS_ISUNDEFINED(y) || SDL_WINDOWPOS_ISCENTERED(y)) {
window->y = bounds.y + (bounds.h - h) / 2;
}
}
window->flags = ((flags & CREATE_FLAGS) | SDL_WINDOW_HIDDEN);
window->brightness = 1.0f;
window->next = _this->windows;
if (_this->windows) {
_this->windows->prev = window;
}
_this->windows = window;
if (_this->CreateWindow && _this->CreateWindow(_this, window) < 0) {
SDL_DestroyWindow(window);
return NULL;
}
if (title) {
SDL_SetWindowTitle(window, title);
}
SDL_FinishWindowCreation(window, flags);
return window;
}
SDL_Window *
SDL_CreateWindowFrom(const void *data)
{
SDL_Window *window;
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
window = (SDL_Window *)SDL_calloc(1, sizeof(*window));
window->magic = &_this->window_magic;
window->id = _this->next_object_id++;
window->flags = SDL_WINDOW_FOREIGN;
window->brightness = 1.0f;
window->next = _this->windows;
if (_this->windows) {
_this->windows->prev = window;
}
_this->windows = window;
if (!_this->CreateWindowFrom ||
_this->CreateWindowFrom(_this, window, data) < 0) {
SDL_DestroyWindow(window);
return NULL;
}
return window;
}
int
SDL_RecreateWindow(SDL_Window * window, Uint32 flags)
{
char *title = window->title;
if ((flags & SDL_WINDOW_OPENGL) && !_this->GL_CreateContext) {
SDL_SetError("No OpenGL support in video driver");
return -1;
}
if (window->flags & SDL_WINDOW_FOREIGN) {
/* Can't destroy and re-create foreign windows, hrm */
flags |= SDL_WINDOW_FOREIGN;
} else {
flags &= ~SDL_WINDOW_FOREIGN;
}
/* Restore video mode, etc. */
SDL_HideWindow(window);
/* Tear down the old native window */
if (window->surface) {
window->surface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(window->surface);
}
if (_this->DestroyWindowFramebuffer) {
_this->DestroyWindowFramebuffer(_this, window);
}
if (_this->DestroyWindow && !(flags & SDL_WINDOW_FOREIGN)) {
_this->DestroyWindow(_this, window);
}
if ((window->flags & SDL_WINDOW_OPENGL) != (flags & SDL_WINDOW_OPENGL)) {
if (flags & SDL_WINDOW_OPENGL) {
SDL_GL_LoadLibrary(NULL);
} else {
SDL_GL_UnloadLibrary();
}
}
window->title = NULL;
window->flags = ((flags & CREATE_FLAGS) | SDL_WINDOW_HIDDEN);
if (_this->CreateWindow && !(flags & SDL_WINDOW_FOREIGN)) {
if (_this->CreateWindow(_this, window) < 0) {
if (flags & SDL_WINDOW_OPENGL) {
SDL_GL_UnloadLibrary();
}
return -1;
}
}
if (title) {
SDL_SetWindowTitle(window, title);
SDL_free(title);
}
SDL_FinishWindowCreation(window, flags);
return 0;
}
Uint32
SDL_GetWindowID(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, 0);
return window->id;
}
SDL_Window *
SDL_GetWindowFromID(Uint32 id)
{
SDL_Window *window;
if (!_this) {
return NULL;
}
for (window = _this->windows; window; window = window->next) {
if (window->id == id) {
return window;
}
}
return NULL;
}
Uint32
SDL_GetWindowFlags(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, 0);
return window->flags;
}
void
SDL_SetWindowTitle(SDL_Window * window, const char *title)
{
CHECK_WINDOW_MAGIC(window, );
if (title == window->title) {
return;
}
if (window->title) {
SDL_free(window->title);
}
if (title && *title) {
window->title = SDL_strdup(title);
} else {
window->title = NULL;
}
if (_this->SetWindowTitle) {
_this->SetWindowTitle(_this, window);
}
}
const char *
SDL_GetWindowTitle(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, "");
return window->title ? window->title : "";
}
void
SDL_SetWindowIcon(SDL_Window * window, SDL_Surface * icon)
{
CHECK_WINDOW_MAGIC(window, );
if (!icon) {
return;
}
if (_this->SetWindowIcon) {
_this->SetWindowIcon(_this, window, icon);
}
}
void*
SDL_SetWindowData(SDL_Window * window, const char *name, void *userdata)
{
SDL_WindowUserData *prev, *data;
CHECK_WINDOW_MAGIC(window, NULL);
/* See if the named data already exists */
prev = NULL;
for (data = window->data; data; prev = data, data = data->next) {
if (SDL_strcmp(data->name, name) == 0) {
void *last_value = data->data;
if (userdata) {
/* Set the new value */
data->data = userdata;
} else {
/* Delete this value */
if (prev) {
prev->next = data->next;
} else {
window->data = data->next;
}
SDL_free(data->name);
SDL_free(data);
}
return last_value;
}
}
/* Add new data to the window */
if (userdata) {
data = (SDL_WindowUserData *)SDL_malloc(sizeof(*data));
data->name = SDL_strdup(name);
data->data = userdata;
data->next = window->data;
window->data = data;
}
return NULL;
}
void *
SDL_GetWindowData(SDL_Window * window, const char *name)
{
SDL_WindowUserData *data;
CHECK_WINDOW_MAGIC(window, NULL);
for (data = window->data; data; data = data->next) {
if (SDL_strcmp(data->name, name) == 0) {
return data->data;
}
}
return NULL;
}
void
SDL_SetWindowPosition(SDL_Window * window, int x, int y)
{
CHECK_WINDOW_MAGIC(window, );
if (!SDL_WINDOWPOS_ISUNDEFINED(x)) {
window->x = x;
}
if (!SDL_WINDOWPOS_ISUNDEFINED(y)) {
window->y = y;
}
if (SDL_WINDOWPOS_ISCENTERED(x) || SDL_WINDOWPOS_ISCENTERED(y)) {
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
int displayIndex;
SDL_Rect bounds;
displayIndex = SDL_GetIndexOfDisplay(display);
SDL_GetDisplayBounds(displayIndex, &bounds);
if (SDL_WINDOWPOS_ISCENTERED(x)) {
window->x = bounds.x + (bounds.w - window->w) / 2;
}
if (SDL_WINDOWPOS_ISCENTERED(y)) {
window->y = bounds.y + (bounds.h - window->h) / 2;
}
}
if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
if (_this->SetWindowPosition) {
_this->SetWindowPosition(_this, window);
}
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_MOVED, x, y);
}
}
void
SDL_GetWindowPosition(SDL_Window * window, int *x, int *y)
{
/* Clear the values */
if (x) {
*x = 0;
}
if (y) {
*y = 0;
}
CHECK_WINDOW_MAGIC(window, );
/* Fullscreen windows are always at their display's origin */
if (window->flags & SDL_WINDOW_FULLSCREEN) {
} else {
if (x) {
*x = window->x;
}
if (y) {
*y = window->y;
}
}
}
void
SDL_SetWindowSize(SDL_Window * window, int w, int h)
{
CHECK_WINDOW_MAGIC(window, );
/* FIXME: Should this change fullscreen modes? */
if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
window->w = w;
window->h = h;
if (_this->SetWindowSize) {
_this->SetWindowSize(_this, window);
}
if (window->w == w && window->h == h) {
/* We didn't get a SDL_WINDOWEVENT_RESIZED event (by design) */
SDL_OnWindowResized(window);
}
}
}
void
SDL_GetWindowSize(SDL_Window * window, int *w, int *h)
{
int dummy;
if (!w) {
w = &dummy;
}
if (!h) {
h = &dummy;
}
*w = 0;
*h = 0;
CHECK_WINDOW_MAGIC(window, );
if (_this && window && window->magic == &_this->window_magic) {
if (w) {
*w = window->w;
}
if (h) {
*h = window->h;
}
} else {
if (w) {
*w = 0;
}
if (h) {
*h = 0;
}
}
}
void
SDL_ShowWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (window->flags & SDL_WINDOW_SHOWN) {
return;
}
if (_this->ShowWindow) {
_this->ShowWindow(_this, window);
}
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_SHOWN, 0, 0);
}
void
SDL_HideWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (!(window->flags & SDL_WINDOW_SHOWN)) {
return;
}
SDL_UpdateFullscreenMode(window, SDL_FALSE);
if (_this->HideWindow) {
_this->HideWindow(_this, window);
}
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_HIDDEN, 0, 0);
}
void
SDL_RaiseWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (!(window->flags & SDL_WINDOW_SHOWN)) {
return;
}
if (_this->RaiseWindow) {
_this->RaiseWindow(_this, window);
}
}
void
SDL_MaximizeWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (window->flags & SDL_WINDOW_MAXIMIZED) {
return;
}
if (_this->MaximizeWindow) {
_this->MaximizeWindow(_this, window);
}
}
void
SDL_MinimizeWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (window->flags & SDL_WINDOW_MINIMIZED) {
return;
}
SDL_UpdateFullscreenMode(window, SDL_FALSE);
if (_this->MinimizeWindow) {
_this->MinimizeWindow(_this, window);
}
}
void
SDL_RestoreWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (!(window->flags & (SDL_WINDOW_MAXIMIZED | SDL_WINDOW_MINIMIZED))) {
return;
}
if (_this->RestoreWindow) {
_this->RestoreWindow(_this, window);
}
}
int
SDL_SetWindowFullscreen(SDL_Window * window, SDL_bool fullscreen)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!!fullscreen == !!(window->flags & SDL_WINDOW_FULLSCREEN)) {
return 0;
}
if (fullscreen) {
window->flags |= SDL_WINDOW_FULLSCREEN;
} else {
window->flags &= ~SDL_WINDOW_FULLSCREEN;
}
SDL_UpdateFullscreenMode(window, FULLSCREEN_VISIBLE(window));
return 0;
}
static SDL_Surface *
SDL_CreateWindowFramebuffer(SDL_Window * window)
{
Uint32 format;
void *pixels;
int pitch;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
if (!_this->CreateWindowFramebuffer || !_this->UpdateWindowFramebuffer) {
return NULL;
}
if (_this->CreateWindowFramebuffer(_this, window, &format, &pixels, &pitch) < 0) {
return NULL;
}
if (!SDL_PixelFormatEnumToMasks(format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
return NULL;
}
return SDL_CreateRGBSurfaceFrom(pixels, window->w, window->h, bpp, pitch, Rmask, Gmask, Bmask, Amask);
}
SDL_Surface *
SDL_GetWindowSurface(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, NULL);
if (!window->surface_valid) {
if (window->surface) {
window->surface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(window->surface);
}
window->surface = SDL_CreateWindowFramebuffer(window);
if (window->surface) {
window->surface_valid = SDL_TRUE;
window->surface->flags |= SDL_DONTFREE;
}
}
return window->surface;
}
int
SDL_UpdateWindowSurface(SDL_Window * window)
{
SDL_Rect full_rect;
CHECK_WINDOW_MAGIC(window, -1);
full_rect.x = 0;
full_rect.y = 0;
full_rect.w = window->w;
full_rect.h = window->h;
return SDL_UpdateWindowSurfaceRects(window, &full_rect, 1);
}
int
SDL_UpdateWindowSurfaceRects(SDL_Window * window, SDL_Rect * rects,
int numrects)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!window->surface_valid) {
SDL_SetError("Window surface is invalid, please call SDL_GetWindowSurface() to get a new surface");
return -1;
}
return _this->UpdateWindowFramebuffer(_this, window, rects, numrects);
}
int
SDL_SetWindowBrightness(SDL_Window * window, float brightness)
{
Uint16 ramp[256];
int status;
CHECK_WINDOW_MAGIC(window, -1);
SDL_CalculateGammaRamp(brightness, ramp);
status = SDL_SetWindowGammaRamp(window, ramp, ramp, ramp);
if (status == 0) {
window->brightness = brightness;
}
return status;
}
float
SDL_GetWindowBrightness(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, 1.0f);
return window->brightness;
}
int
SDL_SetWindowGammaRamp(SDL_Window * window, const Uint16 * red,
const Uint16 * green,
const Uint16 * blue)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!_this->SetWindowGammaRamp) {
SDL_Unsupported();
return -1;
}
if (!window->gamma) {
if (SDL_GetWindowGammaRamp(window, NULL, NULL, NULL) < 0) {
return -1;
}
}
if (red) {
SDL_memcpy(&window->gamma[0*256], red, 256*sizeof(Uint16));
}
if (green) {
SDL_memcpy(&window->gamma[1*256], green, 256*sizeof(Uint16));
}
if (blue) {
SDL_memcpy(&window->gamma[2*256], blue, 256*sizeof(Uint16));
}
if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
return _this->SetWindowGammaRamp(_this, window, window->gamma);
} else {
return 0;
}
}
int
SDL_GetWindowGammaRamp(SDL_Window * window, Uint16 * red,
Uint16 * green,
Uint16 * blue)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!window->gamma) {
int i;
window->gamma = (Uint16 *)SDL_malloc(256*6*sizeof(Uint16));
if (!window->gamma) {
SDL_OutOfMemory();
return -1;
}
window->saved_gamma = window->gamma + 3*256;
if (_this->GetWindowGammaRamp) {
if (_this->GetWindowGammaRamp(_this, window, window->gamma) < 0) {
return -1;
}
} else {
/* Create an identity gamma ramp */
for (i = 0; i < 256; ++i) {
Uint16 value = (Uint16)((i << 8) | i);
window->gamma[0*256+i] = value;
window->gamma[1*256+i] = value;
window->gamma[2*256+i] = value;
}
}
SDL_memcpy(window->saved_gamma, window->gamma, 3*256*sizeof(Uint16));
}
if (red) {
SDL_memcpy(red, &window->gamma[0*256], 256*sizeof(Uint16));
}
if (green) {
SDL_memcpy(green, &window->gamma[1*256], 256*sizeof(Uint16));
}
if (blue) {
SDL_memcpy(blue, &window->gamma[2*256], 256*sizeof(Uint16));
}
return 0;
}
static void
SDL_UpdateWindowGrab(SDL_Window * window)
{
if ((window->flags & SDL_WINDOW_INPUT_FOCUS) && _this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
}
}
void
SDL_SetWindowGrab(SDL_Window * window, SDL_bool grabbed)
{
CHECK_WINDOW_MAGIC(window, );
if (!!grabbed == !!(window->flags & SDL_WINDOW_INPUT_GRABBED)) {
return;
}
if (grabbed) {
window->flags |= SDL_WINDOW_INPUT_GRABBED;
} else {
window->flags &= ~SDL_WINDOW_INPUT_GRABBED;
}
SDL_UpdateWindowGrab(window);
}
SDL_bool
SDL_GetWindowGrab(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, SDL_FALSE);
return ((window->flags & SDL_WINDOW_INPUT_GRABBED) != 0);
}
void
SDL_OnWindowShown(SDL_Window * window)
{
SDL_OnWindowRestored(window);
}
void
SDL_OnWindowHidden(SDL_Window * window)
{
SDL_UpdateFullscreenMode(window, SDL_FALSE);
}
void
SDL_OnWindowResized(SDL_Window * window)
{
window->surface_valid = SDL_FALSE;
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_SIZE_CHANGED, window->w, window->h);
}
void
SDL_OnWindowMinimized(SDL_Window * window)
{
SDL_UpdateFullscreenMode(window, SDL_FALSE);
}
void
SDL_OnWindowRestored(SDL_Window * window)
{
SDL_RaiseWindow(window);
if (FULLSCREEN_VISIBLE(window)) {
SDL_UpdateFullscreenMode(window, SDL_TRUE);
}
}
void
SDL_OnWindowFocusGained(SDL_Window * window)
{
if (window->gamma && _this->SetWindowGammaRamp) {
_this->SetWindowGammaRamp(_this, window, window->gamma);
}
if ((window->flags & SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN) &&
_this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
}
}
void
SDL_OnWindowFocusLost(SDL_Window * window)
{
if (window->gamma && _this->SetWindowGammaRamp) {
_this->SetWindowGammaRamp(_this, window, window->saved_gamma);
}
if ((window->flags & SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN) &&
_this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
}
/* If we're fullscreen on a single-head system and lose focus, minimize */
if ((window->flags & SDL_WINDOW_FULLSCREEN) && _this->num_displays == 1) {
SDL_MinimizeWindow(window);
}
}
SDL_Window *
SDL_GetFocusWindow(void)
{
SDL_Window *window;
if (!_this) {
return NULL;
}
for (window = _this->windows; window; window = window->next) {
if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
return window;
}
}
return NULL;
}
void
SDL_DestroyWindow(SDL_Window * window)
{
SDL_VideoDisplay *display;
CHECK_WINDOW_MAGIC(window, );
/* Restore video mode, etc. */
SDL_HideWindow(window);
if (window->surface) {
window->surface->flags &= ~SDL_DONTFREE;
SDL_FreeSurface(window->surface);
}
if (_this->DestroyWindowFramebuffer) {
_this->DestroyWindowFramebuffer(_this, window);
}
if (_this->DestroyWindow) {
_this->DestroyWindow(_this, window);
}
if (window->flags & SDL_WINDOW_OPENGL) {
SDL_GL_UnloadLibrary();
}
display = SDL_GetDisplayForWindow(window);
if (display->fullscreen_window == window) {
display->fullscreen_window = NULL;
}
/* Now invalidate magic */
window->magic = NULL;
/* Free memory associated with the window */
if (window->title) {
SDL_free(window->title);
}
if (window->gamma) {
SDL_free(window->gamma);
}
while (window->data) {
SDL_WindowUserData *data = window->data;
window->data = data->next;
SDL_free(data->name);
SDL_free(data);
}
/* Unlink the window from the list */
if (window->next) {
window->next->prev = window->prev;
}
if (window->prev) {
window->prev->next = window->next;
} else {
_this->windows = window->next;
}
SDL_free(window);
}
SDL_bool
SDL_IsScreenSaverEnabled()
{
if (!_this) {
return SDL_TRUE;
}
return _this->suspend_screensaver ? SDL_FALSE : SDL_TRUE;
}
void
SDL_EnableScreenSaver()
{
if (!_this) {
return;
}
if (!_this->suspend_screensaver) {
return;
}
_this->suspend_screensaver = SDL_FALSE;
if (_this->SuspendScreenSaver) {
_this->SuspendScreenSaver(_this);
}
}
void
SDL_DisableScreenSaver()
{
if (!_this) {
return;
}
if (_this->suspend_screensaver) {
return;
}
_this->suspend_screensaver = SDL_TRUE;
if (_this->SuspendScreenSaver) {
_this->SuspendScreenSaver(_this);
}
}
void
SDL_VideoQuit(void)
{
int i, j;
if (!_this) {
return;
}
/* Halt event processing before doing anything else */
SDL_QuitQuit();
SDL_MouseQuit();
SDL_KeyboardQuit();
SDL_StopEventLoop();
SDL_EnableScreenSaver();
/* Clean up the system video */
while (_this->windows) {
SDL_DestroyWindow(_this->windows);
}
_this->VideoQuit(_this);
for (i = _this->num_displays; i--;) {
SDL_VideoDisplay *display = &_this->displays[i];
for (j = display->num_display_modes; j--;) {
if (display->display_modes[j].driverdata) {
SDL_free(display->display_modes[j].driverdata);
display->display_modes[j].driverdata = NULL;
}
}
if (display->display_modes) {
SDL_free(display->display_modes);
display->display_modes = NULL;
}
if (display->desktop_mode.driverdata) {
SDL_free(display->desktop_mode.driverdata);
display->desktop_mode.driverdata = NULL;
}
if (display->driverdata) {
SDL_free(display->driverdata);
display->driverdata = NULL;
}
}
if (_this->displays) {
SDL_free(_this->displays);
_this->displays = NULL;
}
if (_this->clipboard_text) {
SDL_free(_this->clipboard_text);
_this->clipboard_text = NULL;
}
_this->free(_this);
_this = NULL;
}
int
SDL_GL_LoadLibrary(const char *path)
{
int retval;
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
if (_this->gl_config.driver_loaded) {
if (path && SDL_strcmp(path, _this->gl_config.driver_path) != 0) {
SDL_SetError("OpenGL library already loaded");
return -1;
}
retval = 0;
} else {
if (!_this->GL_LoadLibrary) {
SDL_SetError("No dynamic GL support in video driver");
return -1;
}
retval = _this->GL_LoadLibrary(_this, path);
}
if (retval == 0) {
++_this->gl_config.driver_loaded;
}
return (retval);
}
void *
SDL_GL_GetProcAddress(const char *proc)
{
void *func;
if (!_this) {
SDL_UninitializedVideo();
return NULL;
}
func = NULL;
if (_this->GL_GetProcAddress) {
if (_this->gl_config.driver_loaded) {
func = _this->GL_GetProcAddress(_this, proc);
} else {
SDL_SetError("No GL driver has been loaded");
}
} else {
SDL_SetError("No dynamic GL support in video driver");
}
return func;
}
void
SDL_GL_UnloadLibrary(void)
{
if (!_this) {
SDL_UninitializedVideo();
return;
}
if (_this->gl_config.driver_loaded > 0) {
if (--_this->gl_config.driver_loaded > 0) {
return;
}
if (_this->GL_UnloadLibrary) {
_this->GL_UnloadLibrary(_this);
}
}
}
SDL_bool
SDL_GL_ExtensionSupported(const char *extension)
{
#if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
const GLubyte *(APIENTRY * glGetStringFunc) (GLenum);
const char *extensions;
const char *start;
const char *where, *terminator;
/* Extension names should not have spaces. */
where = SDL_strchr(extension, ' ');
if (where || *extension == '\0') {
return SDL_FALSE;
}
/* See if there's an environment variable override */
start = SDL_getenv(extension);
if (start && *start == '0') {
return SDL_FALSE;
}
/* Lookup the available extensions */
glGetStringFunc = SDL_GL_GetProcAddress("glGetString");
if (glGetStringFunc) {
extensions = (const char *) glGetStringFunc(GL_EXTENSIONS);
} else {
extensions = NULL;
}
if (!extensions) {
return SDL_FALSE;
}
/*
* It takes a bit of care to be fool-proof about parsing the OpenGL
* extensions string. Don't be fooled by sub-strings, etc.
*/
start = extensions;
for (;;) {
where = SDL_strstr(start, extension);
if (!where)
break;
terminator = where + SDL_strlen(extension);
if (where == start || *(where - 1) == ' ')
if (*terminator == ' ' || *terminator == '\0')
return SDL_TRUE;
start = terminator;
}
return SDL_FALSE;
#else
return SDL_FALSE;
#endif
}
int
SDL_GL_SetAttribute(SDL_GLattr attr, int value)
{
#if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
int retval;
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
retval = 0;
switch (attr) {
case SDL_GL_RED_SIZE:
_this->gl_config.red_size = value;
break;
case SDL_GL_GREEN_SIZE:
_this->gl_config.green_size = value;
break;
case SDL_GL_BLUE_SIZE:
_this->gl_config.blue_size = value;
break;
case SDL_GL_ALPHA_SIZE:
_this->gl_config.alpha_size = value;
break;
case SDL_GL_DOUBLEBUFFER:
_this->gl_config.double_buffer = value;
break;
case SDL_GL_BUFFER_SIZE:
_this->gl_config.buffer_size = value;
break;
case SDL_GL_DEPTH_SIZE:
_this->gl_config.depth_size = value;
break;
case SDL_GL_STENCIL_SIZE:
_this->gl_config.stencil_size = value;
break;
case SDL_GL_ACCUM_RED_SIZE:
_this->gl_config.accum_red_size = value;
break;
case SDL_GL_ACCUM_GREEN_SIZE:
_this->gl_config.accum_green_size = value;
break;
case SDL_GL_ACCUM_BLUE_SIZE:
_this->gl_config.accum_blue_size = value;
break;
case SDL_GL_ACCUM_ALPHA_SIZE:
_this->gl_config.accum_alpha_size = value;
break;
case SDL_GL_STEREO:
_this->gl_config.stereo = value;
break;
case SDL_GL_MULTISAMPLEBUFFERS:
_this->gl_config.multisamplebuffers = value;
break;
case SDL_GL_MULTISAMPLESAMPLES:
_this->gl_config.multisamplesamples = value;
break;
case SDL_GL_ACCELERATED_VISUAL:
_this->gl_config.accelerated = value;
break;
case SDL_GL_RETAINED_BACKING:
_this->gl_config.retained_backing = value;
break;
case SDL_GL_CONTEXT_MAJOR_VERSION:
_this->gl_config.major_version = value;
break;
case SDL_GL_CONTEXT_MINOR_VERSION:
_this->gl_config.minor_version = value;
break;
default:
SDL_SetError("Unknown OpenGL attribute");
retval = -1;
break;
}
return retval;
#else
SDL_Unsupported();
return -1;
#endif /* SDL_VIDEO_OPENGL */
}
int
SDL_GL_GetAttribute(SDL_GLattr attr, int *value)
{
#if SDL_VIDEO_OPENGL || SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
void (APIENTRY * glGetIntegervFunc) (GLenum pname, GLint * params);
GLenum(APIENTRY * glGetErrorFunc) (void);
GLenum attrib = 0;
GLenum error = 0;
glGetIntegervFunc = SDL_GL_GetProcAddress("glGetIntegerv");
if (!glGetIntegervFunc) {
return -1;
}
glGetErrorFunc = SDL_GL_GetProcAddress("glGetError");
if (!glGetErrorFunc) {
return -1;
}
/* Clear value in any case */
*value = 0;
switch (attr) {
case SDL_GL_RED_SIZE:
attrib = GL_RED_BITS;
break;
case SDL_GL_BLUE_SIZE:
attrib = GL_BLUE_BITS;
break;
case SDL_GL_GREEN_SIZE:
attrib = GL_GREEN_BITS;
break;
case SDL_GL_ALPHA_SIZE:
attrib = GL_ALPHA_BITS;
break;
case SDL_GL_DOUBLEBUFFER:
#if SDL_VIDEO_OPENGL
attrib = GL_DOUBLEBUFFER;
break;
#else
/* OpenGL ES 1.0 and above specifications have EGL_SINGLE_BUFFER */
/* parameter which switches double buffer to single buffer. OpenGL ES */
/* SDL driver must set proper value after initialization */
*value = _this->gl_config.double_buffer;
return 0;
#endif
case SDL_GL_DEPTH_SIZE:
attrib = GL_DEPTH_BITS;
break;
case SDL_GL_STENCIL_SIZE:
attrib = GL_STENCIL_BITS;
break;
#if SDL_VIDEO_OPENGL
case SDL_GL_ACCUM_RED_SIZE:
attrib = GL_ACCUM_RED_BITS;
break;
case SDL_GL_ACCUM_GREEN_SIZE:
attrib = GL_ACCUM_GREEN_BITS;
break;
case SDL_GL_ACCUM_BLUE_SIZE:
attrib = GL_ACCUM_BLUE_BITS;
break;
case SDL_GL_ACCUM_ALPHA_SIZE:
attrib = GL_ACCUM_ALPHA_BITS;
break;
case SDL_GL_STEREO:
attrib = GL_STEREO;
break;
#else
case SDL_GL_ACCUM_RED_SIZE:
case SDL_GL_ACCUM_GREEN_SIZE:
case SDL_GL_ACCUM_BLUE_SIZE:
case SDL_GL_ACCUM_ALPHA_SIZE:
case SDL_GL_STEREO:
/* none of these are supported in OpenGL ES */
*value = 0;
return 0;
#endif
case SDL_GL_MULTISAMPLEBUFFERS:
#if SDL_VIDEO_OPENGL
attrib = GL_SAMPLE_BUFFERS_ARB;
#else
attrib = GL_SAMPLE_BUFFERS;
#endif
break;
case SDL_GL_MULTISAMPLESAMPLES:
#if SDL_VIDEO_OPENGL
attrib = GL_SAMPLES_ARB;
#else
attrib = GL_SAMPLES;
#endif
break;
case SDL_GL_BUFFER_SIZE:
{
GLint bits = 0;
GLint component;
/*
* there doesn't seem to be a single flag in OpenGL
* for this!
*/
glGetIntegervFunc(GL_RED_BITS, &component);
bits += component;
glGetIntegervFunc(GL_GREEN_BITS, &component);
bits += component;
glGetIntegervFunc(GL_BLUE_BITS, &component);
bits += component;
glGetIntegervFunc(GL_ALPHA_BITS, &component);
bits += component;
*value = bits;
return 0;
}
case SDL_GL_ACCELERATED_VISUAL:
{
/* FIXME: How do we get this information? */
*value = (_this->gl_config.accelerated != 0);
return 0;
}
case SDL_GL_RETAINED_BACKING:
{
*value = _this->gl_config.retained_backing;
return 0;
}
case SDL_GL_CONTEXT_MAJOR_VERSION:
{
*value = _this->gl_config.major_version;
return 0;
}
case SDL_GL_CONTEXT_MINOR_VERSION:
{
*value = _this->gl_config.minor_version;
return 0;
}
default:
SDL_SetError("Unknown OpenGL attribute");
return -1;
}
glGetIntegervFunc(attrib, (GLint *) value);
error = glGetErrorFunc();
if (error != GL_NO_ERROR) {
switch (error) {
case GL_INVALID_ENUM:
{
SDL_SetError("OpenGL error: GL_INVALID_ENUM");
}
break;
case GL_INVALID_VALUE:
{
SDL_SetError("OpenGL error: GL_INVALID_VALUE");
}
break;
default:
{
SDL_SetError("OpenGL error: %08X", error);
}
break;
}
return -1;
}
return 0;
#else
SDL_Unsupported();
return -1;
#endif /* SDL_VIDEO_OPENGL */
}
SDL_GLContext
SDL_GL_CreateContext(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, NULL);
if (!(window->flags & SDL_WINDOW_OPENGL)) {
SDL_SetError("The specified window isn't an OpenGL window");
return NULL;
}
return _this->GL_CreateContext(_this, window);
}
int
SDL_GL_MakeCurrent(SDL_Window * window, SDL_GLContext context)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!(window->flags & SDL_WINDOW_OPENGL)) {
SDL_SetError("The specified window isn't an OpenGL window");
return -1;
}
if (!context) {
window = NULL;
}
return _this->GL_MakeCurrent(_this, window, context);
}
int
SDL_GL_SetSwapInterval(int interval)
{
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
if (_this->GL_SetSwapInterval) {
return _this->GL_SetSwapInterval(_this, interval);
} else {
SDL_SetError("Setting the swap interval is not supported");
return -1;
}
}
int
SDL_GL_GetSwapInterval(void)
{
if (!_this) {
SDL_UninitializedVideo();
return -1;
}
if (_this->GL_GetSwapInterval) {
return _this->GL_GetSwapInterval(_this);
} else {
SDL_SetError("Getting the swap interval is not supported");
return -1;
}
}
void
SDL_GL_SwapWindow(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window, );
if (!(window->flags & SDL_WINDOW_OPENGL)) {
SDL_SetError("The specified window isn't an OpenGL window");
return;
}
_this->GL_SwapWindow(_this, window);
}
void
SDL_GL_DeleteContext(SDL_GLContext context)
{
if (!_this || !_this->gl_data || !context) {
return;
}
_this->GL_MakeCurrent(_this, NULL, NULL);
_this->GL_DeleteContext(_this, context);
}
#if 0 // FIXME
/*
* Utility function used by SDL_WM_SetIcon(); flags & 1 for color key, flags
* & 2 for alpha channel.
*/
static void
CreateMaskFromColorKeyOrAlpha(SDL_Surface * icon, Uint8 * mask, int flags)
{
int x, y;
Uint32 colorkey;
#define SET_MASKBIT(icon, x, y, mask) \
mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8)))
colorkey = icon->format->colorkey;
switch (icon->format->BytesPerPixel) {
case 1:
{
Uint8 *pixels;
for (y = 0; y < icon->h; ++y) {
pixels = (Uint8 *) icon->pixels + y * icon->pitch;
for (x = 0; x < icon->w; ++x) {
if (*pixels++ == colorkey) {
SET_MASKBIT(icon, x, y, mask);
}
}
}
}
break;
case 2:
{
Uint16 *pixels;
for (y = 0; y < icon->h; ++y) {
pixels = (Uint16 *) icon->pixels + y * icon->pitch / 2;
for (x = 0; x < icon->w; ++x) {
if ((flags & 1) && *pixels == colorkey) {
SET_MASKBIT(icon, x, y, mask);
} else if ((flags & 2)
&& (*pixels & icon->format->Amask) == 0) {
SET_MASKBIT(icon, x, y, mask);
}
pixels++;
}
}
}
break;
case 4:
{
Uint32 *pixels;
for (y = 0; y < icon->h; ++y) {
pixels = (Uint32 *) icon->pixels + y * icon->pitch / 4;
for (x = 0; x < icon->w; ++x) {
if ((flags & 1) && *pixels == colorkey) {
SET_MASKBIT(icon, x, y, mask);
} else if ((flags & 2)
&& (*pixels & icon->format->Amask) == 0) {
SET_MASKBIT(icon, x, y, mask);
}
pixels++;
}
}
}
break;
}
}
/*
* Sets the window manager icon for the display window.
*/
void
SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
{
if (icon && _this->SetIcon) {
/* Generate a mask if necessary, and create the icon! */
if (mask == NULL) {
int mask_len = icon->h * (icon->w + 7) / 8;
int flags = 0;
mask = (Uint8 *) SDL_malloc(mask_len);
if (mask == NULL) {
return;
}
SDL_memset(mask, ~0, mask_len);
if (icon->flags & SDL_SRCCOLORKEY)
flags |= 1;
if (icon->flags & SDL_SRCALPHA)
flags |= 2;
if (flags) {
CreateMaskFromColorKeyOrAlpha(icon, mask, flags);
}
_this->SetIcon(_this, icon, mask);
SDL_free(mask);
} else {
_this->SetIcon(_this, icon, mask);
}
}
}
#endif
SDL_bool
SDL_GetWindowWMInfo(SDL_Window * window, struct SDL_SysWMinfo *info)
{
CHECK_WINDOW_MAGIC(window, SDL_FALSE);
if (!info) {
return SDL_FALSE;
}
info->subsystem = SDL_SYSWM_UNKNOWN;
if (!_this->GetWindowWMInfo) {
return SDL_FALSE;
}
return (_this->GetWindowWMInfo(_this, window, info));
}
void
SDL_StartTextInput(void)
{
if (_this && _this->StartTextInput) {
_this->StartTextInput(_this);
}
SDL_EventState(SDL_TEXTINPUT, SDL_ENABLE);
SDL_EventState(SDL_TEXTEDITING, SDL_ENABLE);
}
void
SDL_StopTextInput(void)
{
if (_this && _this->StopTextInput) {
_this->StopTextInput(_this);
}
SDL_EventState(SDL_TEXTINPUT, SDL_DISABLE);
SDL_EventState(SDL_TEXTEDITING, SDL_DISABLE);
}
void
SDL_SetTextInputRect(SDL_Rect *rect)
{
if (_this && _this->SetTextInputRect) {
_this->SetTextInputRect(_this, rect);
}
}
/* vi: set ts=4 sw=4 expandtab: */
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