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comparison src/video/x11/SDL_x11shape.c @ 4787:e25ad8d97027

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Ported over, to the best of my ability, the code for Win32 shaped windows and patched in the correct C syntax and coding conventions of SDL.
author Eli Gottlieb <eligottlieb@gmail.com>
date Thu, 08 Jul 2010 22:52:49 -0400
parents 175da36d1342
children a6bc01875d20
comparison
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4786:175da36d1342 4787:e25ad8d97027
61 61
62 return 0; 62 return 0;
63 } 63 }
64 64
65 int X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) { 65 int X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) {
66 assert(shaper != NULL && shape != NULL); 66 if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
67 return -1;
67 if(!SDL_ISPIXELFORMAT_ALPHA(SDL_MasksToPixelFormatEnum(shape->format->BitsPerPixel,shape->format->Rmask,shape->format->Gmask,shape->format->Bmask,shape->format->Amask))) 68 if(!SDL_ISPIXELFORMAT_ALPHA(SDL_MasksToPixelFormatEnum(shape->format->BitsPerPixel,shape->format->Rmask,shape->format->Gmask,shape->format->Bmask,shape->format->Amask)))
68 return -2; 69 return -2;
69 if(shape->w != shaper->window->w || shape->h != shaper->window->h) 70 if(shape->w != shaper->window->w || shape->h != shaper->window->h)
70 return -3; 71 return -3;
71 SDL_ShapeData *data = shaper->driverdata; 72 SDL_ShapeData *data = shaper->driverdata;
72 assert(data != NULL);
73 73
74 /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */ 74 /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
75 SDL_CalculateShapeBitmap(shaper->alphacutoff,shape,data->bitmap,8,1); 75 SDL_CalculateShapeBitmap(shaper->alphacutoff,shape,data->bitmap,8,1);
76 76
77 SDL_WindowData *windowdata = (SDL_WindowData*)(shaper->window->driverdata); 77 SDL_WindowData *windowdata = (SDL_WindowData*)(shaper->window->driverdata);