test/testshape.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 02 Feb 2014 00:53:27 -0800
changeset 8149 681eb46b8ac4
parent 8102 c86987834681
child 8696 6bb798ddf205
permissions -rw-r--r--
Fixed bug 2374 - Update copyright for 2014...

Is it that time already??
     1 /*
     2   Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
     3 
     4   This software is provided 'as-is', without any express or implied
     5   warranty.  In no event will the authors be held liable for any damages
     6   arising from the use of this software.
     7 
     8   Permission is granted to anyone to use this software for any purpose,
     9   including commercial applications, and to alter it and redistribute it
    10   freely.
    11 */
    12 #include <stdlib.h>
    13 #include <math.h>
    14 #include <stdio.h>
    15 #include "SDL.h"
    16 #include "SDL_shape.h"
    17 
    18 #define SHAPED_WINDOW_X 150
    19 #define SHAPED_WINDOW_Y 150
    20 #define SHAPED_WINDOW_DIMENSION 640
    21 
    22 typedef struct LoadedPicture {
    23     SDL_Surface *surface;
    24     SDL_Texture *texture;
    25     SDL_WindowShapeMode mode;
    26     const char* name;
    27 } LoadedPicture;
    28 
    29 void render(SDL_Renderer *renderer,SDL_Texture *texture,SDL_Rect texture_dimensions)
    30 {
    31     /* Clear render-target to blue. */
    32     SDL_SetRenderDrawColor(renderer,0x00,0x00,0xff,0xff);
    33     SDL_RenderClear(renderer);
    34 
    35     /* Render the texture. */
    36     SDL_RenderCopy(renderer,texture,&texture_dimensions,&texture_dimensions);
    37 
    38     SDL_RenderPresent(renderer);
    39 }
    40 
    41 int main(int argc,char** argv)
    42 {
    43     Uint8 num_pictures;
    44     LoadedPicture* pictures;
    45     int i, j;
    46     SDL_PixelFormat* format = NULL;
    47     SDL_Window *window;
    48     SDL_Renderer *renderer;
    49     SDL_Color black = {0,0,0,0xff};
    50     SDL_Event event;
    51     int event_pending = 0;
    52     int should_exit = 0;
    53     unsigned int current_picture;
    54     int button_down;
    55     Uint32 pixelFormat = 0;
    56     int access = 0;
    57     SDL_Rect texture_dimensions;;
    58 
    59     /* Enable standard application logging */
    60     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    61 
    62     if(argc < 2) {
    63 		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Shape requires at least one bitmap file as argument.");
    64         exit(-1);
    65     }
    66 
    67     if(SDL_VideoInit(NULL) == -1) {
    68         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not initialize SDL video.");
    69         exit(-2);
    70     }
    71 
    72     num_pictures = argc - 1;
    73     pictures = (LoadedPicture *)SDL_malloc(sizeof(LoadedPicture)*num_pictures);
    74     for(i=0;i<num_pictures;i++)
    75         pictures[i].surface = NULL;
    76     for(i=0;i<num_pictures;i++) {
    77         pictures[i].surface = SDL_LoadBMP(argv[i+1]);
    78         pictures[i].name = argv[i+1];
    79         if(pictures[i].surface == NULL) {
    80             j = 0;
    81             for(j=0;j<num_pictures;j++)
    82                 SDL_FreeSurface(pictures[j].surface);
    83             SDL_free(pictures);
    84             SDL_VideoQuit();
    85             SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not load surface from named bitmap file: %s", argv[i+1]);
    86             exit(-3);
    87         }
    88 
    89         format = pictures[i].surface->format;
    90         if(SDL_ISPIXELFORMAT_ALPHA(format->format)) {
    91             pictures[i].mode.mode = ShapeModeBinarizeAlpha;
    92             pictures[i].mode.parameters.binarizationCutoff = 255;
    93         }
    94         else {
    95             pictures[i].mode.mode = ShapeModeColorKey;
    96             pictures[i].mode.parameters.colorKey = black;
    97         }
    98     }
    99 
   100     window = SDL_CreateShapedWindow("SDL_Shape test",
   101         SHAPED_WINDOW_X, SHAPED_WINDOW_Y,
   102         SHAPED_WINDOW_DIMENSION,SHAPED_WINDOW_DIMENSION,
   103         0);
   104     SDL_SetWindowPosition(window, SHAPED_WINDOW_X, SHAPED_WINDOW_Y);
   105     if(window == NULL) {
   106         for(i=0;i<num_pictures;i++)
   107             SDL_FreeSurface(pictures[i].surface);
   108         SDL_free(pictures);
   109         SDL_VideoQuit();
   110         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create shaped window for SDL_Shape.");
   111         exit(-4);
   112     }
   113     renderer = SDL_CreateRenderer(window,-1,0);
   114     if (!renderer) {
   115         SDL_DestroyWindow(window);
   116         for(i=0;i<num_pictures;i++)
   117             SDL_FreeSurface(pictures[i].surface);
   118         SDL_free(pictures);
   119         SDL_VideoQuit();
   120         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create rendering context for SDL_Shape window.");
   121         exit(-5);
   122     }
   123 
   124     for(i=0;i<num_pictures;i++)
   125         pictures[i].texture = NULL;
   126     for(i=0;i<num_pictures;i++) {
   127         pictures[i].texture = SDL_CreateTextureFromSurface(renderer,pictures[i].surface);
   128         if(pictures[i].texture == NULL) {
   129             j = 0;
   130             for(j=0;j<num_pictures;i++)
   131                 if(pictures[i].texture != NULL)
   132                     SDL_DestroyTexture(pictures[i].texture);
   133             for(i=0;i<num_pictures;i++)
   134                 SDL_FreeSurface(pictures[i].surface);
   135             SDL_free(pictures);
   136             SDL_DestroyRenderer(renderer);
   137             SDL_DestroyWindow(window);
   138             SDL_VideoQuit();
   139             SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Could not create texture for SDL_shape.");
   140             exit(-6);
   141         }
   142     }
   143 
   144     event_pending = 0;
   145     should_exit = 0;
   146     event_pending = SDL_PollEvent(&event);
   147     current_picture = 0;
   148     button_down = 0;
   149     texture_dimensions.h = 0;
   150     texture_dimensions.w = 0;
   151     texture_dimensions.x = 0;
   152     texture_dimensions.y = 0;
   153     SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Changing to shaped bmp: %s", pictures[current_picture].name);
   154     SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);
   155     SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
   156     SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);
   157     while(should_exit == 0) {
   158         event_pending = SDL_PollEvent(&event);
   159         if(event_pending == 1) {
   160             if(event.type == SDL_KEYDOWN) {
   161                 button_down = 1;
   162                 if(event.key.keysym.sym == SDLK_ESCAPE) {
   163                     should_exit = 1;
   164                     break;
   165                 }
   166             }
   167             if(button_down && event.type == SDL_KEYUP) {
   168                 button_down = 0;
   169                 current_picture += 1;
   170                 if(current_picture >= num_pictures)
   171                     current_picture = 0;
   172                 SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Changing to shaped bmp: %s", pictures[current_picture].name);
   173                 SDL_QueryTexture(pictures[current_picture].texture,(Uint32 *)&pixelFormat,(int *)&access,&texture_dimensions.w,&texture_dimensions.h);
   174                 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
   175                 SDL_SetWindowShape(window,pictures[current_picture].surface,&pictures[current_picture].mode);
   176             }
   177             if(event.type == SDL_QUIT)
   178                 should_exit = 1;
   179             event_pending = 0;
   180         }
   181         render(renderer,pictures[current_picture].texture,texture_dimensions);
   182         SDL_Delay(10);
   183     }
   184 
   185     /* Free the textures. */
   186     for(i=0;i<num_pictures;i++)
   187         SDL_DestroyTexture(pictures[i].texture);
   188     SDL_DestroyRenderer(renderer);
   189     /* Destroy the window. */
   190     SDL_DestroyWindow(window);
   191     /* Free the original surfaces backing the textures. */
   192     for(i=0;i<num_pictures;i++)
   193         SDL_FreeSurface(pictures[i].surface);
   194     SDL_free(pictures);
   195     /* Call SDL_VideoQuit() before quitting. */
   196     SDL_VideoQuit();
   197 
   198     return 0;
   199 }
   200 
   201 /* vi: set ts=4 sw=4 expandtab: */