test/graywin.c
author Holmes Futrell <hfutrell@umail.ucsb.edu>
Thu, 01 Jan 2009 23:49:28 +0000
changeset 2950 04c9f1e4c496
parent 1895 c121d94672cb
child 4884 27ab20a36eba
permissions -rw-r--r--
Added target testdraw2 for running the test/testdraw2.c test.
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/* Simple program:  Fill a colormap with gray and stripe it down the screen */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "SDL.h"
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#ifdef TEST_VGA16               /* Define this if you want to test VGA 16-color video modes */
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#define NUM_COLORS	16
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#else
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#define NUM_COLORS	256
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#endif
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/* Draw a randomly sized and colored box centered about (X,Y) */
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void
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DrawBox(SDL_Surface * screen, int X, int Y, int width, int height)
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{
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    static unsigned int seeded = 0;
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    SDL_Rect area;
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    Uint32 color;
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    Uint32 randc;
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    /* Seed the random number generator */
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    if (seeded == 0) {
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        srand(time(NULL));
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        seeded = 1;
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    }
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    /* Get the bounds of the rectangle */
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    area.w = (rand() % width);
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    area.h = (rand() % height);
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    area.x = X - (area.w / 2);
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    area.y = Y - (area.h / 2);
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    randc = (rand() % NUM_COLORS);
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    if (screen->format->BytesPerPixel == 1) {
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        color = randc;
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    } else {
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        color = SDL_MapRGB(screen->format, randc, randc, randc);
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    }
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    /* Do it! */
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    SDL_FillRect(screen, &area, color);
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    if (screen->flags & SDL_DOUBLEBUF) {
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        SDL_Flip(screen);
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    } else {
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        SDL_UpdateRects(screen, 1, &area);
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    }
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}
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void
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DrawBackground(SDL_Surface * screen)
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{
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    int i, j, k;
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    Uint8 *buffer;
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    Uint16 *buffer16;
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    Uint16 color;
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    Uint8 gradient;
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    /* Set the surface pixels and refresh! */
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    /* Use two loops in case the surface is double-buffered (both sides) */
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    for (j = 0; j < 2; ++j) {
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        if (SDL_LockSurface(screen) < 0) {
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            fprintf(stderr, "Couldn't lock display surface: %s\n",
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                    SDL_GetError());
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            return;
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        }
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        buffer = (Uint8 *) screen->pixels;
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        if (screen->format->BytesPerPixel != 2) {
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            for (i = 0; i < screen->h; ++i) {
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                memset(buffer, (i * (NUM_COLORS - 1)) / screen->h,
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                       screen->w * screen->format->BytesPerPixel);
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                buffer += screen->pitch;
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            }
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        } else {
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            for (i = 0; i < screen->h; ++i) {
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                gradient = ((i * (NUM_COLORS - 1)) / screen->h);
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                color =
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                    SDL_MapRGB(screen->format, gradient, gradient, gradient);
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                buffer16 = (Uint16 *) buffer;
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                for (k = 0; k < screen->w; k++) {
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                    *(buffer16 + k) = color;
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                }
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                buffer += screen->pitch;
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            }
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        }
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        SDL_UnlockSurface(screen);
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        if (screen->flags & SDL_DOUBLEBUF) {
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            SDL_Flip(screen);
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        } else {
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            SDL_UpdateRect(screen, 0, 0, 0, 0);
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            break;
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        }
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    }
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}
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SDL_Surface *
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CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags)
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{
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    SDL_Surface *screen;
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    int i;
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    SDL_Color palette[NUM_COLORS];
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    /* Set the video mode */
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    screen = SDL_SetVideoMode(w, h, bpp, flags);
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    if (screen == NULL) {
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        fprintf(stderr, "Couldn't set display mode: %s\n", SDL_GetError());
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        return (NULL);
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    }
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    fprintf(stderr, "Screen is in %s mode\n",
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            (screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
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    if (bpp == 8) {
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        /* Set a gray colormap, reverse order from white to black */
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        for (i = 0; i < NUM_COLORS; ++i) {
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   122
            palette[i].r = (NUM_COLORS - 1) - i * (256 / NUM_COLORS);
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   123
            palette[i].g = (NUM_COLORS - 1) - i * (256 / NUM_COLORS);
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   124
            palette[i].b = (NUM_COLORS - 1) - i * (256 / NUM_COLORS);
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   125
        }
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   126
        SDL_SetColors(screen, palette, 0, NUM_COLORS);
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   127
    }
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   128
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   129
    return (screen);
0
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   130
}
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   131
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   132
int
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   133
main(int argc, char *argv[])
0
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{
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   135
    SDL_Surface *screen;
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   136
    Uint32 videoflags;
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   137
    int done;
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   138
    SDL_Event event;
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   139
    int width, height, bpp;
0
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   140
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   141
    /* Initialize SDL */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   142
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   143
        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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   144
        exit(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   145
    }
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   146
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   147
    /* See if we try to get a hardware colormap */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   148
    width = 640;
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   149
    height = 480;
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   150
    bpp = 8;
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   151
    videoflags = SDL_SWSURFACE;
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   152
    while (argc > 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   153
        --argc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   154
        if (argv[argc - 1] && (strcmp(argv[argc - 1], "-width") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   155
            width = atoi(argv[argc]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   156
            --argc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   157
        } else if (argv[argc - 1]
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   158
                   && (strcmp(argv[argc - 1], "-height") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   159
            height = atoi(argv[argc]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   160
            --argc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   161
        } else if (argv[argc - 1] && (strcmp(argv[argc - 1], "-bpp") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   162
            bpp = atoi(argv[argc]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   163
            --argc;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   164
        } else if (argv[argc] && (strcmp(argv[argc], "-hw") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   165
            videoflags |= SDL_HWSURFACE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   166
        } else if (argv[argc] && (strcmp(argv[argc], "-hwpalette") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   167
            videoflags |= SDL_HWPALETTE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   168
        } else if (argv[argc] && (strcmp(argv[argc], "-flip") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   169
            videoflags |= SDL_DOUBLEBUF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   170
        } else if (argv[argc] && (strcmp(argv[argc], "-noframe") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   171
            videoflags |= SDL_NOFRAME;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   172
        } else if (argv[argc] && (strcmp(argv[argc], "-resize") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   173
            videoflags |= SDL_RESIZABLE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   174
        } else if (argv[argc] && (strcmp(argv[argc], "-fullscreen") == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   175
            videoflags |= SDL_FULLSCREEN;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   176
        } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   177
            fprintf(stderr,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   178
                    "Usage: %s [-width] [-height] [-bpp] [-hw] [-hwpalette] [-flip] [-noframe] [-fullscreen] [-resize]\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   179
                    argv[0]);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   180
            exit(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   181
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   182
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   183
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   184
    /* Set a video mode */
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diff changeset
   185
    screen = CreateScreen(width, height, bpp, videoflags);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   186
    if (screen == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   187
        exit(2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   188
    }
0
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   189
1895
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   190
    DrawBackground(screen);
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diff changeset
   191
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   192
    /* Wait for a keystroke */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   193
    done = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   194
    while (!done && SDL_WaitEvent(&event)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   195
        switch (event.type) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   196
        case SDL_MOUSEBUTTONDOWN:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   197
            DrawBox(screen, event.button.x, event.button.y, width, height);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   198
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   199
        case SDL_KEYDOWN:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   200
            /* Ignore ALT-TAB for windows */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   201
            if ((event.key.keysym.sym == SDLK_LALT) ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   202
                (event.key.keysym.sym == SDLK_TAB)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   203
                break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   204
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   205
            /* Center the mouse on <SPACE> */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   206
            if (event.key.keysym.sym == SDLK_SPACE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   207
                SDL_WarpMouse(width / 2, height / 2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   208
                break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   209
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   210
            /* Toggle fullscreen mode on <RETURN> */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   211
            if (event.key.keysym.sym == SDLK_RETURN) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   212
                videoflags ^= SDL_FULLSCREEN;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   213
                screen = CreateScreen(screen->w, screen->h,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   214
                                      screen->format->BitsPerPixel,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   215
                                      videoflags);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   216
                if (screen == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   217
                    fprintf(stderr, "Couldn't toggle fullscreen mode\n");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   218
                    done = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   219
                }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   220
                DrawBackground(screen);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   221
                break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   222
            }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   223
            /* Any other key quits the application... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   224
        case SDL_QUIT:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   225
            done = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   226
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   227
        case SDL_VIDEOEXPOSE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   228
            DrawBackground(screen);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   229
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   230
        case SDL_VIDEORESIZE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   231
            printf("Screen resized to %dx%d\n", event.resize.w,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   232
                   event.resize.h);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   233
            screen =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   234
                CreateScreen(event.resize.w, event.resize.h,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   235
                             screen->format->BitsPerPixel, videoflags);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   236
            if (screen == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   237
                fprintf(stderr, "Couldn't resize video mode\n");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 945
diff changeset
   238
                done = 1;
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            }
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            DrawBackground(screen);
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   241
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   242
        default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   243
            break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   244
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   245
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   246
    SDL_Quit();
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   247
    return (0);
0
74212992fb08 Initial revision
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diff changeset
   248
}