| /* |
| 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 */ |
| |