mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-12-20 22:16:49 +01:00
122 lines
4.1 KiB
C
122 lines
4.1 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
#include "../../SDL_internal.h"
|
|
|
|
#if SDL_VIDEO_DRIVER_X11
|
|
|
|
#include "SDL_assert.h"
|
|
#include "SDL_x11video.h"
|
|
#include "SDL_x11shape.h"
|
|
#include "SDL_x11window.h"
|
|
#include "../SDL_shape_internals.h"
|
|
|
|
SDL_Window*
|
|
X11_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) {
|
|
return SDL_CreateWindow(title,x,y,w,h,flags);
|
|
}
|
|
|
|
SDL_WindowShaper*
|
|
X11_CreateShaper(SDL_Window* window) {
|
|
SDL_WindowShaper* result = NULL;
|
|
SDL_ShapeData* data = NULL;
|
|
int resized_properly;
|
|
|
|
#if SDL_VIDEO_DRIVER_X11_XSHAPE
|
|
if (SDL_X11_HAVE_XSHAPE) { /* Make sure X server supports it. */
|
|
result = malloc(sizeof(SDL_WindowShaper));
|
|
result->window = window;
|
|
result->mode.mode = ShapeModeDefault;
|
|
result->mode.parameters.binarizationCutoff = 1;
|
|
result->userx = result->usery = 0;
|
|
data = SDL_malloc(sizeof(SDL_ShapeData));
|
|
result->driverdata = data;
|
|
data->bitmapsize = 0;
|
|
data->bitmap = NULL;
|
|
window->shaper = result;
|
|
resized_properly = X11_ResizeWindowShape(window);
|
|
SDL_assert(resized_properly == 0);
|
|
}
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
int
|
|
X11_ResizeWindowShape(SDL_Window* window) {
|
|
SDL_ShapeData* data = window->shaper->driverdata;
|
|
unsigned int bitmapsize = window->w / 8;
|
|
SDL_assert(data != NULL);
|
|
|
|
if(window->w % 8 > 0)
|
|
bitmapsize += 1;
|
|
bitmapsize *= window->h;
|
|
if(data->bitmapsize != bitmapsize || data->bitmap == NULL) {
|
|
data->bitmapsize = bitmapsize;
|
|
if(data->bitmap != NULL)
|
|
free(data->bitmap);
|
|
data->bitmap = malloc(data->bitmapsize);
|
|
if(data->bitmap == NULL) {
|
|
return SDL_SetError("Could not allocate memory for shaped-window bitmap.");
|
|
}
|
|
}
|
|
memset(data->bitmap,0,data->bitmapsize);
|
|
|
|
window->shaper->userx = window->x;
|
|
window->shaper->usery = window->y;
|
|
SDL_SetWindowPosition(window,-1000,-1000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
|
|
SDL_ShapeData *data = NULL;
|
|
SDL_WindowData *windowdata = NULL;
|
|
Pixmap shapemask;
|
|
|
|
if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
|
|
return -1;
|
|
|
|
#if SDL_VIDEO_DRIVER_X11_XSHAPE
|
|
if(shape->format->Amask == 0 && SDL_SHAPEMODEALPHA(shape_mode->mode))
|
|
return -2;
|
|
if(shape->w != shaper->window->w || shape->h != shaper->window->h)
|
|
return -3;
|
|
data = shaper->driverdata;
|
|
|
|
/* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
|
|
SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8);
|
|
|
|
windowdata = (SDL_WindowData*)(shaper->window->driverdata);
|
|
shapemask = X11_XCreateBitmapFromData(windowdata->videodata->display,windowdata->xwindow,data->bitmap,shaper->window->w,shaper->window->h);
|
|
|
|
X11_XShapeCombineMask(windowdata->videodata->display,windowdata->xwindow, ShapeBounding, 0, 0,shapemask, ShapeSet);
|
|
X11_XSync(windowdata->videodata->display,False);
|
|
|
|
X11_XFreePixmap(windowdata->videodata->display,shapemask);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* SDL_VIDEO_DRIVER_X11 */
|
|
|