test/testime.c
author dewyatt
Sun, 25 Jul 2010 13:17:31 -0400
changeset 4757 140be6839185
parent 4756 b99b1024607a
child 4763 518d1679d2d0
permissions -rw-r--r--
Correctly draw cursor based on position. Had to add UTF-8 functions utf8_length, utf8_next, utf8_advance.
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/* A simple program to test the Input Method support in the SDL library (1.3+) */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "SDL.h"
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#ifdef HAVE_SDL_TTF
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#include "SDL_ttf.h"
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#endif
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#define DEFAULT_PTSIZE  30
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#ifdef __QNXNTO__
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    #define DEFAULT_FONT    "/usr/photon/font_repository/tt0003m_.ttf"
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#else
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    #define DEFAULT_FONT    "/System/Library/Fonts/华文细黑.ttf"
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#endif
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#define MAX_TEXT_LENGTH 256
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SDL_Surface *screen;
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#ifdef HAVE_SDL_TTF
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TTF_Font *font;
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#endif
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SDL_Rect textRect, markedRect;
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Uint32 lineColor, backColor;
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SDL_Color textColor = { 0, 0, 0 };
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char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
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int cursor = 0;
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size_t utf8_length(unsigned char c)
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{
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    c = (unsigned char)(0xff & c);
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    if (c < 0x80)
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        return 1;
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    else if ((c >> 5) ==0x6)
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        return 2;
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    else if ((c >> 4) == 0xe)
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        return 3;
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    else if ((c >> 3) == 0x1e)
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        return 4;
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    else
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        return 0;
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}
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char *utf8_next(char *p)
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{
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    size_t len = utf8_length(*p);
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    size_t i = 0;
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    if (!len)
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        return 0;
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    for (; i < len; ++i)
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    {
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        ++p;
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        if (!*p)
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            return 0;
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    }
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    return p;
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}
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char *utf8_advance(char *p, size_t distance)
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{
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    size_t i = 0;
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    for (; i < distance && p; ++i)
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    {
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        p = utf8_next(p);
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    }
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    return p;
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}
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void usage()
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{
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    printf("usage: testime [--font fontfile] [--fullscreen]\n");
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    exit(0);
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}
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void InitVideo(int argc, char *argv[])
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{
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    int width = 640, height = 480;
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    int flags = SDL_HWSURFACE;
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    const char *fontname = DEFAULT_FONT;
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    int fullscreen = 0;
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    for (argc--, argv++; argc > 0; argc--, argv++)
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    {
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        if (strcmp(argv[0], "--help") == 0)
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            usage();
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        else if (strcmp(argv[0], "--fullscreen") == 0)
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            fullscreen = 1;
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        else if (strcmp(argv[0], "--font") == 0)
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        {
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            argc--;
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            argv++;
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            if (argc > 0)
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                fontname = argv[0];
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            else
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                usage();
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        }
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    }
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    SDL_setenv("SDL_VIDEO_WINDOW_POS", "center", 1);
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    if (SDL_Init(SDL_INIT_VIDEO) < 0)
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    {
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        fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
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        exit(-1);
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    }
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#ifdef HAVE_SDL_TTF
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    /* Initialize fonts */
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    TTF_Init();
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    font = TTF_OpenFont(fontname, DEFAULT_PTSIZE);
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    if (! font)
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    {
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        fprintf(stderr, "Failed to find font: %s\n", TTF_GetError());
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        exit(-1);
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    }
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#endif
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    printf("Using font: %s\n", fontname);
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    atexit(SDL_Quit);
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    if (fullscreen)
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    {
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        SDL_DisplayMode mode;
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        SDL_GetDesktopDisplayMode(&mode);
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        width = mode.w;
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        height = mode.h;
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        fprintf(stderr, "%dx%d\n", width, height);
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        flags |= SDL_FULLSCREEN;
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    }
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    /* Create window */
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    screen = SDL_SetVideoMode(width, height, 32, flags);
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    if (screen == NULL)
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    {
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        fprintf(stderr, "Unable to set %dx%d video: %s\n",
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                width, height, SDL_GetError());
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        exit(-1);
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    }
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}
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void CleanupVideo()
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{
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    SDL_StopTextInput();
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#ifdef HAVE_SDL_TTF
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    TTF_CloseFont(font);
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    TTF_Quit();
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#endif
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}
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void InitInput()
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{
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    backColor = SDL_MapRGB(screen->format, 0xFF, 0xFF, 0xFF);
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    lineColor = SDL_MapRGB(screen->format, 0x0, 0x0, 0x0);
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    /* Prepare a rect for text input */
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    textRect.x = textRect.y = 100;
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    textRect.w = screen->w - 2 * textRect.x;
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    textRect.h = 50;
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    text[0] = 0;
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    markedRect = textRect;
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    markedText[0] = 0;
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    SDL_StartTextInput();
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}
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#ifdef HAVE_SDL_TTF
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static void RenderText(SDL_Surface *sur,
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                        TTF_Font *font,
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                        const char *text,
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                        int x, int y,
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                        SDL_Color color)
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{
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    SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, color);
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    SDL_Rect dest = { x, y, textSur->w, textSur->h };
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    SDL_BlitSurface(textSur, NULL, sur, &dest);
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    SDL_FreeSurface(textSur);
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}
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#endif
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void Redraw()
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{
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    int w = 0, h = textRect.h;
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    SDL_Rect cursorRect, underlineRect;
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    SDL_FillRect(screen, &textRect, backColor);
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#ifdef HAVE_SDL_TTF
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    if (strlen(text))
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    {
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        RenderText(screen, font, text, textRect.x, textRect.y, textColor);
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        TTF_SizeUTF8(font, text, &w, &h);
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    }
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#endif
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    markedRect.x = textRect.x + w;
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    markedRect.w = textRect.w - w;
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    if (markedRect.w < 0)
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    {
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        SDL_Flip(screen);
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        // Stop text input because we cannot hold any more characters
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        SDL_StopTextInput();
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        return;
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    }
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    else
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    {
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        SDL_StartTextInput();
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    }
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    cursorRect = markedRect;
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    cursorRect.w = 2;
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    cursorRect.h = h;
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    SDL_FillRect(screen, &markedRect, backColor);
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    if (markedText[0])
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    {
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#ifdef HAVE_SDL_TTF
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        if (cursor)
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        {
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            char *p = utf8_advance(markedText, cursor);
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            char c = 0;
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            if (!p)
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                p = &markedText[strlen(markedText)];
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            c = *p;
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            *p = 0;
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            TTF_SizeUTF8(font, markedText, &w, 0);
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            cursorRect.x += w;
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            *p = c;
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        }
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        RenderText(screen, font, markedText, markedRect.x, markedRect.y, textColor);
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        TTF_SizeUTF8(font, markedText, &w, &h);
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#endif
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        underlineRect = markedRect;
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        underlineRect.y += (h - 2);
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        underlineRect.h = 2;
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        underlineRect.w = w;
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        SDL_FillRect(screen, &underlineRect, lineColor);
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    }
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    SDL_FillRect(screen, &cursorRect, lineColor);
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    SDL_Flip(screen);
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    SDL_SetTextInputRect(&markedRect);
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   256
}
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void
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HotKey_ToggleFullScreen(void)
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{
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    SDL_Surface *screen;
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    screen = SDL_GetVideoSurface();
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   264
    if (SDL_WM_ToggleFullScreen(screen)) {
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        printf("Toggled fullscreen mode - now %s\n",
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               (screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
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    } else {
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   268
        printf("Unable to toggle fullscreen mode\n");
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   269
    }
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   270
}
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   271
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   272
int main(int argc, char *argv[])
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   273
{
3338
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   274
    SDL_Event event;
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   275
    int done = 0;
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   276
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   277
    InitVideo(argc, argv);
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   278
    InitInput();
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   279
    Redraw();
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   280
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   281
    while (! done && SDL_WaitEvent(&event))
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   282
    {
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
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   283
        switch (event.type)
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   284
        {
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   285
        case SDL_KEYDOWN:
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f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   286
            switch (event.key.keysym.sym)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   287
            {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   288
                case SDLK_ESCAPE:
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   289
                     done = 1;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   290
                     break;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   291
                case SDLK_RETURN:
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   292
                     text[0]=0x00;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   293
                     Redraw();
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   294
                     break;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   295
                case SDLK_BACKSPACE:
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   296
                     {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   297
                         int textlen=SDL_strlen(text);
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   298
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   299
                         do {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   300
                             if (textlen==0)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   301
                             {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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                                 break;
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   303
                             }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   304
                             if ((text[textlen-1] & 0x80) == 0x00)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   305
                             {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   306
                                 /* One byte */
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   307
                                 text[textlen-1]=0x00;
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   308
                                 break;
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   309
                             }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   310
                             if ((text[textlen-1] & 0xC0) == 0x80)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   311
                             {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   312
                                 /* Byte from the multibyte sequence */
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   313
                                 text[textlen-1]=0x00;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   314
                                 textlen--;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   315
                             }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   316
                             if ((text[textlen-1] & 0xC0) == 0xC0)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   317
                             {
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   318
                                 /* First byte of multibyte sequence */
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   319
                                 text[textlen-1]=0x00;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   320
                                 break;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   321
                             }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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   322
                         } while(1);
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   323
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   324
                         Redraw();
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   325
                     }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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diff changeset
   326
                     break;
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
Mike Gorchak <lestat@i.com.ua>
parents: 3338
diff changeset
   327
            }
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
Mike Gorchak <lestat@i.com.ua>
parents: 3338
diff changeset
   328
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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parents: 3338
diff changeset
   329
            if (done)
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
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parents: 3338
diff changeset
   330
            {
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   331
                break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   332
            }
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   333
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   334
            fprintf(stderr,
4465
3e69e077cb95 Removed multi-mouse / multi-keyboard support in anticipation of a real multi-mouse and multi-touch API.
Sam Lantinga <slouken@libsdl.org>
parents: 3581
diff changeset
   335
                    "Keyboard: scancode 0x%08X = %s, keycode 0x%08X = %s\n",
3e69e077cb95 Removed multi-mouse / multi-keyboard support in anticipation of a real multi-mouse and multi-touch API.
Sam Lantinga <slouken@libsdl.org>
parents: 3581
diff changeset
   336
                    event.key.keysym.scancode,
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   337
                    SDL_GetScancodeName(event.key.keysym.scancode),
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   338
                    event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym));
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   339
            break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   340
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   341
        case SDL_TEXTINPUT:
3478
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
Mike Gorchak <lestat@i.com.ua>
parents: 3338
diff changeset
   342
            if (SDL_strlen(event.text.text) == 0 || event.text.text[0] == '\n' ||
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   343
                markedRect.w < 0)
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   344
                break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   345
4465
3e69e077cb95 Removed multi-mouse / multi-keyboard support in anticipation of a real multi-mouse and multi-touch API.
Sam Lantinga <slouken@libsdl.org>
parents: 3581
diff changeset
   346
            fprintf(stderr, "Keyboard: text input \"%s\"\n", event.text.text);
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   347
3478
f7541260e89c Added support for QNX default font. Backspace and Return keys now handled.
Mike Gorchak <lestat@i.com.ua>
parents: 3338
diff changeset
   348
            if (SDL_strlen(text) + SDL_strlen(event.text.text) < sizeof(text))
4756
b99b1024607a Changed markedText to have its own storage to resolve multiple bugs.
dewyatt
parents: 4465
diff changeset
   349
                strcat(text, event.text.text);
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
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parents:
diff changeset
   350
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   351
            fprintf(stderr, "text inputed: %s\n", text);
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   352
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   353
            // After text inputed, we can clear up markedText because it
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   354
            // is committed
4756
b99b1024607a Changed markedText to have its own storage to resolve multiple bugs.
dewyatt
parents: 4465
diff changeset
   355
            markedText[0] = 0;
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   356
            Redraw();
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   357
            break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   358
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   359
        case SDL_TEXTEDITING:
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   360
            fprintf(stderr, "text editing \"%s\", selected range (%d, %d)\n",
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   361
                    event.edit.text, event.edit.start, event.edit.length);
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   362
4756
b99b1024607a Changed markedText to have its own storage to resolve multiple bugs.
dewyatt
parents: 4465
diff changeset
   363
            strcpy(markedText, event.edit.text);
4757
140be6839185 Correctly draw cursor based on position.
dewyatt
parents: 4756
diff changeset
   364
            cursor = event.edit.start;
3280
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   365
            Redraw();
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   366
            break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   367
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   368
        case SDL_QUIT:
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   369
            done = 1;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   370
            break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   371
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   372
        default:
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   373
            break;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   374
        }
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   375
    }
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   376
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   377
    CleanupVideo();
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   378
    return 0;
00cace2d9080 Merged a cleaned up version of Jiang's code changes from Google Summer of Code 2009
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   379
}