diff options
Diffstat (limited to 'Source/external/SDL2/src/video/directfb/SDL_DirectFB_shape.c')
| -rw-r--r-- | Source/external/SDL2/src/video/directfb/SDL_DirectFB_shape.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/Source/external/SDL2/src/video/directfb/SDL_DirectFB_shape.c b/Source/external/SDL2/src/video/directfb/SDL_DirectFB_shape.c new file mode 100644 index 0000000..3655931 --- /dev/null +++ b/Source/external/SDL2/src/video/directfb/SDL_DirectFB_shape.c @@ -0,0 +1,131 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 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_DIRECTFB + +#include "SDL_assert.h" +#include "SDL_DirectFB_video.h" +#include "SDL_DirectFB_shape.h" +#include "SDL_DirectFB_window.h" + +#include "../SDL_shape_internals.h" + +SDL_WindowShaper* +DirectFB_CreateShaper(SDL_Window* window) { + SDL_WindowShaper* result = NULL; + SDL_ShapeData* data; + int resized_properly; + + 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->surface = NULL; + window->shaper = result; + resized_properly = DirectFB_ResizeWindowShape(window); + SDL_assert(resized_properly == 0); + + return result; +} + +int +DirectFB_ResizeWindowShape(SDL_Window* window) { + SDL_ShapeData* data = window->shaper->driverdata; + SDL_assert(data != NULL); + + if (window->x != -1000) + { + window->shaper->userx = window->x; + window->shaper->usery = window->y; + } + SDL_SetWindowPosition(window,-1000,-1000); + + return 0; +} + +int +DirectFB_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) { + + if(shaper == NULL || shape == NULL || shaper->driverdata == NULL) + return -1; + 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; + + { + SDL_VideoDisplay *display = SDL_GetDisplayForWindow(shaper->window); + SDL_DFB_DEVICEDATA(display->device); + Uint32 *pixels; + Sint32 pitch; + Uint32 h,w; + Uint8 *src, *bitmap; + DFBSurfaceDescription dsc; + + SDL_ShapeData *data = shaper->driverdata; + + SDL_DFB_RELEASE(data->surface); + + dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS; + dsc.width = shape->w; + dsc.height = shape->h; + dsc.caps = DSCAPS_PREMULTIPLIED; + dsc.pixelformat = DSPF_ARGB; + + SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc, &data->surface)); + + /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */ + SDL_DFB_ALLOC_CLEAR(bitmap, shape->w * shape->h); + SDL_CalculateShapeBitmap(shaper->mode,shape,bitmap,1); + + src = bitmap; + + SDL_DFB_CHECK(data->surface->Lock(data->surface, DSLF_WRITE | DSLF_READ, (void **) &pixels, &pitch)); + + h = shaper->window->h; + while (h--) { + for (w = 0; w < shaper->window->w; w++) { + if (*src) + pixels[w] = 0xFFFFFFFF; + else + pixels[w] = 0; + src++; + + } + pixels += (pitch >> 2); + } + SDL_DFB_CHECK(data->surface->Unlock(data->surface)); + SDL_DFB_FREE(bitmap); + + /* FIXME: Need to call this here - Big ?? */ + DirectFB_WM_RedrawLayout(SDL_GetDisplayForWindow(shaper->window)->device, shaper->window); + } + + return 0; +error: + return -1; +} + +#endif /* SDL_VIDEO_DRIVER_DIRECTFB */ |