465 lines
12 KiB
C
465 lines
12 KiB
C
/*
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Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Test out the window manager interaction functions */
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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 "SDL.h"
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/* Is the cursor visible? */
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static int visible = 1;
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static Uint8 video_bpp;
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static Uint32 video_flags;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
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quit(int rc)
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{
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SDL_Quit();
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exit(rc);
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}
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int
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SetVideoMode(int w, int h)
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{
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SDL_Surface *screen;
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int i;
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Uint8 *buffer;
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SDL_Color palette[256];
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screen = SDL_SetVideoMode(w, h, video_bpp, video_flags);
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if (screen == NULL) {
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fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",
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w, h, video_bpp, SDL_GetError());
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return (-1);
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}
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printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?
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"fullscreen" : "windowed");
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/* Set the surface pixels and refresh! */
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for (i = 0; i < 256; ++i) {
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palette[i].r = 255 - i;
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palette[i].g = 255 - i;
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palette[i].b = 255 - i;
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}
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SDL_SetColors(screen, palette, 0, 256);
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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 (-1);
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}
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buffer = (Uint8 *) screen->pixels;
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for (i = 0; i < screen->h; ++i) {
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memset(buffer, (i * 255) / 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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SDL_UnlockSurface(screen);
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SDL_UpdateRect(screen, 0, 0, 0, 0);
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return (0);
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}
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SDL_Surface *
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LoadIconSurface(char *file, Uint8 ** maskp)
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{
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SDL_Surface *icon;
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Uint8 *pixels;
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Uint8 *mask;
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int mlen, i, j;
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*maskp = NULL;
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/* Load the icon surface */
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icon = SDL_LoadBMP(file);
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if (icon == NULL) {
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fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
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return (NULL);
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}
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/* Check width and height
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if ( (icon->w%8) != 0 ) {
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fprintf(stderr, "Icon width must be a multiple of 8!\n");
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SDL_FreeSurface(icon);
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return(NULL);
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}
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*/
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if (icon->format->palette == NULL) {
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fprintf(stderr, "Icon must have a palette!\n");
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SDL_FreeSurface(icon);
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return (NULL);
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}
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/* Set the colorkey */
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SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *) icon->pixels));
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/* Create the mask */
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pixels = (Uint8 *) icon->pixels;
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printf("Transparent pixel: (%d,%d,%d)\n",
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icon->format->palette->colors[*pixels].r,
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icon->format->palette->colors[*pixels].g,
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icon->format->palette->colors[*pixels].b);
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mlen = (icon->w * icon->h + 7) / 8;
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mask = (Uint8 *) malloc(mlen);
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if (mask == NULL) {
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fprintf(stderr, "Out of memory!\n");
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SDL_FreeSurface(icon);
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return (NULL);
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}
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memset(mask, 0, mlen);
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for (i = 0; i < icon->h; i++)
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for (j = 0; j < icon->w; j++) {
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int pindex = i * icon->pitch + j;
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int mindex = i * icon->w + j;
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if (pixels[pindex] != *pixels)
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mask[mindex >> 3] |= 1 << (7 - (mindex & 7));
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}
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*maskp = mask;
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return (icon);
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}
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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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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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printf("Unable to toggle fullscreen mode\n");
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video_flags ^= SDL_FULLSCREEN;
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SetVideoMode(screen->w, screen->h);
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}
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}
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void
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HotKey_ToggleGrab(void)
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{
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SDL_GrabMode mode;
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printf("Ctrl-G: toggling input grab!\n");
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mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
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if (mode == SDL_GRAB_ON) {
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printf("Grab was on\n");
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} else {
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printf("Grab was off\n");
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}
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mode = SDL_WM_GrabInput(mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
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if (mode == SDL_GRAB_ON) {
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printf("Grab is now on\n");
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} else {
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printf("Grab is now off\n");
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}
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}
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void
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HotKey_Iconify(void)
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{
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printf("Ctrl-Z: iconifying window!\n");
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SDL_WM_IconifyWindow();
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}
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void
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HotKey_Quit(void)
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{
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SDL_Event event;
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printf("Posting internal quit request\n");
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event.type = SDL_USEREVENT;
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SDL_PushEvent(&event);
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}
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static void
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print_modifiers(void)
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{
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int mod;
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printf(" modifiers:");
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mod = SDL_GetModState();
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if(!mod) {
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printf(" (none)");
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return;
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}
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if(mod & KMOD_LSHIFT)
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printf(" LSHIFT");
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if(mod & KMOD_RSHIFT)
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printf(" RSHIFT");
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if(mod & KMOD_LCTRL)
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printf(" LCTRL");
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if(mod & KMOD_RCTRL)
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printf(" RCTRL");
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if(mod & KMOD_LALT)
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printf(" LALT");
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if(mod & KMOD_RALT)
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printf(" RALT");
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if(mod & KMOD_LMETA)
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printf(" LMETA");
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if(mod & KMOD_RMETA)
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printf(" RMETA");
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if(mod & KMOD_NUM)
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printf(" NUM");
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if(mod & KMOD_CAPS)
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printf(" CAPS");
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if(mod & KMOD_MODE)
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printf(" MODE");
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}
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static void PrintKey(const SDL_Keysym *sym, int pressed)
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{
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/* Print the keycode, name and state */
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if ( sym->sym ) {
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printf("Key %s: %d-%s ", pressed ? "pressed" : "released",
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sym->sym, SDL_GetKeyName(sym->sym));
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} else {
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printf("Unknown Key (scancode = %d) %s ", sym->scancode,
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pressed ? "pressed" : "released");
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}
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/* Print the translated character, if one exists */
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if ( sym->unicode ) {
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/* Is it a control-character? */
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if ( sym->unicode < ' ' ) {
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printf(" (^%c)", sym->unicode+'@');
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} else {
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#ifdef UNICODE
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printf(" (%c)", sym->unicode);
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#else
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/* This is a Latin-1 program, so only show 8-bits */
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if ( !(sym->unicode & 0xFF00) )
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printf(" (%c)", sym->unicode);
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else
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printf(" (0x%X)", sym->unicode);
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#endif
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}
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}
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print_modifiers();
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printf("\n");
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}
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static int (SDLCALL * old_filterfunc) (void *, SDL_Event *);
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static void *old_filterdata;
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int SDLCALL
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FilterEvents(void *userdata, SDL_Event * event)
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{
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static int reallyquit = 0;
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if (old_filterfunc) {
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old_filterfunc(old_filterdata, event);
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}
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switch (event->type) {
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case SDL_ACTIVEEVENT:
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/* See what happened */
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printf("App %s ", event->active.gain ? "gained" : "lost");
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if (event->active.state & SDL_APPACTIVE)
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printf("active ");
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if (event->active.state & SDL_APPINPUTFOCUS)
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printf("input ");
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if (event->active.state & SDL_APPMOUSEFOCUS)
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printf("mouse ");
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printf("focus\n");
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/* See if we are iconified or restored */
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if (event->active.state & SDL_APPACTIVE) {
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printf("App has been %s\n",
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event->active.gain ? "restored" : "iconified");
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}
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return (0);
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/* We want to toggle visibility on buttonpress */
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case SDL_MOUSEBUTTONDOWN:
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case SDL_MOUSEBUTTONUP:
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if (event->button.state == SDL_PRESSED) {
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visible = !visible;
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SDL_ShowCursor(visible);
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}
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printf("Mouse button %d has been %s at %d,%d\n",
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event->button.button,
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(event->button.state == SDL_PRESSED) ? "pressed" : "released",
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event->button.x, event->button.y);
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return (0);
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/* Show relative mouse motion */
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case SDL_MOUSEMOTION:
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#if 0
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printf("Mouse motion: {%d,%d} (%d,%d)\n",
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event->motion.x, event->motion.y,
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event->motion.xrel, event->motion.yrel);
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#endif
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return (0);
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case SDL_KEYDOWN:
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PrintKey(&event->key.keysym, 1);
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if (event->key.keysym.sym == SDLK_ESCAPE) {
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HotKey_Quit();
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}
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if ((event->key.keysym.sym == SDLK_g) &&
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(event->key.keysym.mod & KMOD_CTRL)) {
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HotKey_ToggleGrab();
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}
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if ((event->key.keysym.sym == SDLK_z) &&
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(event->key.keysym.mod & KMOD_CTRL)) {
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HotKey_Iconify();
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}
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if ((event->key.keysym.sym == SDLK_RETURN) &&
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(event->key.keysym.mod & (KMOD_ALT|KMOD_META))) {
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HotKey_ToggleFullScreen();
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}
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return (0);
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case SDL_KEYUP:
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PrintKey(&event->key.keysym, 0);
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return(0);
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/* Pass the video resize event through .. */
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case SDL_VIDEORESIZE:
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return (1);
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/* This is important! Queue it if we want to quit. */
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case SDL_QUIT:
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if (!reallyquit) {
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reallyquit = 1;
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printf("Quit requested\n");
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return (0);
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}
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printf("Quit demanded\n");
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return (1);
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/* This will never happen because events queued directly
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to the event queue are not filtered.
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*/
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case SDL_USEREVENT:
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return (1);
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/* Drop all other events */
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default:
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return (0);
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}
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}
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int
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main(int argc, char *argv[])
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{
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SDL_Event event;
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const char *title;
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SDL_Surface *icon;
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Uint8 *icon_mask;
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int parsed;
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int w, h;
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if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return (1);
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}
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/* Check command line arguments */
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w = 640;
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h = 480;
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video_bpp = 8;
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video_flags = SDL_SWSURFACE;
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parsed = 1;
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while (parsed) {
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if ((argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0)) {
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video_flags |= SDL_FULLSCREEN;
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argc -= 1;
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argv += 1;
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} else if ((argc >= 2) && (strcmp(argv[1], "-resize") == 0)) {
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video_flags |= SDL_RESIZABLE;
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argc -= 1;
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argv += 1;
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} else if ((argc >= 2) && (strcmp(argv[1], "-noframe") == 0)) {
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video_flags |= SDL_NOFRAME;
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argc -= 1;
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argv += 1;
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} else if ((argc >= 3) && (strcmp(argv[1], "-width") == 0)) {
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w = atoi(argv[2]);
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argc -= 2;
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argv += 2;
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} else if ((argc >= 3) && (strcmp(argv[1], "-height") == 0)) {
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h = atoi(argv[2]);
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argc -= 2;
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argv += 2;
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} else if ((argc >= 3) && (strcmp(argv[1], "-bpp") == 0)) {
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video_bpp = atoi(argv[2]);
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argc -= 2;
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argv += 2;
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} else {
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parsed = 0;
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}
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}
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/* Set the icon -- this must be done before the first mode set */
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icon = LoadIconSurface("icon.bmp", &icon_mask);
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if (icon != NULL) {
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SDL_WM_SetIcon(icon, icon_mask);
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}
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if (icon_mask != NULL)
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free(icon_mask);
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/* Set the title bar */
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if (argv[1] == NULL)
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title = "Testing 1.. 2.. 3...";
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else
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title = argv[1];
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SDL_WM_SetCaption(title, "testwm");
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/* See if it's really set */
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SDL_WM_GetCaption(&title, NULL);
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if (title)
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printf("Title was set to: %s\n", title);
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else
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printf("No window title was set!\n");
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/* Initialize the display */
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if (SetVideoMode(w, h) < 0) {
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quit(1);
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}
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/* Set an event filter that discards everything but QUIT */
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SDL_GetEventFilter(&old_filterfunc, &old_filterdata);
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SDL_SetEventFilter(FilterEvents, NULL);
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/* Loop, waiting for QUIT */
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while (SDL_WaitEvent(&event)) {
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switch (event.type) {
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case SDL_VIDEORESIZE:
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printf("Got a resize event: %dx%d\n",
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event.resize.w, event.resize.h);
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SetVideoMode(event.resize.w, event.resize.h);
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break;
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case SDL_USEREVENT:
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printf("Handling internal quit request\n");
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/* Fall through to the quit handler */
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case SDL_QUIT:
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printf("Bye bye..\n");
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quit(0);
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default:
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/* This should never happen */
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printf("Warning: Event %d wasn't filtered\n", event.type);
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break;
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}
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}
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printf("SDL_WaitEvent() error: %s\n", SDL_GetError());
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SDL_Quit();
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return (255);
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}
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