Mercurial > sdl-ios-xcode
view test/testwm.c @ 3978:b966761fef6c SDL-1.2
Significantly improved XIM support.
Fixes Bugzilla #429.
Selected notes from the patch's README:
= FIXES =
This patch fixes the above issues as follows.
== X11 events ==
Moved XFilterEvent just after XNextEvent so that all events are passed
to it. Also, XFilterEvent will receive masks indicated by IM through
XNFilterEvents IC value as well as masks surpplied by SDL.
X11_KeyRepeat is called between XNextEvent and XFilterEvent, after
testing an event is a KeyRelease. I'm not 100% comfortable to do so,
but I couldn't find a better timing to call it, and use of the
function is inevitable.
== Xutf8LookupString ==
Used a longer buffer to receive UTF-8 string. If it is insufficient,
a dynamic storage of the requested size will be allocated. The
initial size of the buffer is set to 32, because the Japanese text
converted from the most widely used benchmark key sequence for
Japanese IM, "WATASHINONAMAEHANAKANODESU." has ten Japanese characters
in it, that occupies 30 bytes when encoded in UTF-8.
== SDL_keysym.unicode ==
On Windows version of SDL implementation, SDL_keysym.unicode stores
UTF-16 encoded unicode characters, one UTF-16 encoding unit per an SDL
event. A Unicode supplementary characters are sent to an application
as two events. (One with a high surrogate and another with a low
surrogate.) The behavior seems reasonable since it is upward
compatible with existing handling of BMP characters.
I wrote a UTF-8 to UTF-16 conversion function for the purpose. It is
designed with the execution speed in mind, having a minimum set of
features that my patch requires.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Mon, 25 Jun 2007 19:58:32 +0000 |
parents | 67fc81efcfc3 |
children | c121d94672cb 14195cfdb66e |
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/* Test out the window manager interaction functions */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "SDL.h" /* Is the cursor visible? */ static int visible = 1; static Uint8 video_bpp; static Uint32 video_flags; /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } int SetVideoMode(int w, int h) { SDL_Surface *screen; int i; Uint8 *buffer; SDL_Color palette[256]; screen = SDL_SetVideoMode(w, h, video_bpp, video_flags); if ( screen == NULL ) { fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", w, h, video_bpp, SDL_GetError()); return(-1); } printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ? "fullscreen" : "windowed"); /* Set the surface pixels and refresh! */ for ( i=0; i<256; ++i ) { palette[i].r = 255-i; palette[i].g = 255-i; palette[i].b = 255-i; } SDL_SetColors(screen, palette, 0, 256); if ( SDL_LockSurface(screen) < 0 ) { fprintf(stderr, "Couldn't lock display surface: %s\n", SDL_GetError()); return(-1); } buffer = (Uint8 *)screen->pixels; for ( i=0; i<screen->h; ++i ) { memset(buffer,(i*255)/screen->h, screen->w*screen->format->BytesPerPixel); buffer += screen->pitch; } SDL_UnlockSurface(screen); SDL_UpdateRect(screen, 0, 0, 0, 0); return(0); } SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp) { SDL_Surface *icon; Uint8 *pixels; Uint8 *mask; int mlen, i, j; *maskp = NULL; /* Load the icon surface */ icon = SDL_LoadBMP(file); if ( icon == NULL ) { fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError()); return(NULL); } /* Check width and height if ( (icon->w%8) != 0 ) { fprintf(stderr, "Icon width must be a multiple of 8!\n"); SDL_FreeSurface(icon); return(NULL); } */ if ( icon->format->palette == NULL ) { fprintf(stderr, "Icon must have a palette!\n"); SDL_FreeSurface(icon); return(NULL); } /* Set the colorkey */ SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels)); /* Create the mask */ pixels = (Uint8 *)icon->pixels; printf("Transparent pixel: (%d,%d,%d)\n", icon->format->palette->colors[*pixels].r, icon->format->palette->colors[*pixels].g, icon->format->palette->colors[*pixels].b); mlen = (icon->w*icon->h + 7) / 8; mask = (Uint8 *)malloc(mlen); if ( mask == NULL ) { fprintf(stderr, "Out of memory!\n"); SDL_FreeSurface(icon); return(NULL); } memset(mask, 0, mlen); for ( i=0; i < icon->h; i++) for (j=0; j < icon->w; j++) { int pindex = i * icon->pitch + j; int mindex = i * icon->w + j; if ( pixels[pindex] != *pixels ) mask[mindex>>3] |= 1 << (7 - (mindex & 7)); } *maskp = mask; return(icon); } void HotKey_ToggleFullScreen(void) { SDL_Surface *screen; screen = SDL_GetVideoSurface(); if ( SDL_WM_ToggleFullScreen(screen) ) { printf("Toggled fullscreen mode - now %s\n", (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed"); } else { printf("Unable to toggle fullscreen mode\n"); video_flags ^= SDL_FULLSCREEN; SetVideoMode(screen->w, screen->h); } } void HotKey_ToggleGrab(void) { SDL_GrabMode mode; printf("Ctrl-G: toggling input grab!\n"); mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); if ( mode == SDL_GRAB_ON ) { printf("Grab was on\n"); } else { printf("Grab was off\n"); } mode = SDL_WM_GrabInput(mode ? SDL_GRAB_OFF : SDL_GRAB_ON); if ( mode == SDL_GRAB_ON ) { printf("Grab is now on\n"); } else { printf("Grab is now off\n"); } } void HotKey_Iconify(void) { printf("Ctrl-Z: iconifying window!\n"); SDL_WM_IconifyWindow(); } void HotKey_Quit(void) { SDL_Event event; printf("Posting internal quit request\n"); event.type = SDL_USEREVENT; SDL_PushEvent(&event); } int SDLCALL FilterEvents(const SDL_Event *event) { static int reallyquit = 0; switch (event->type) { case SDL_ACTIVEEVENT: /* See what happened */ printf("App %s ", event->active.gain ? "gained" : "lost"); if ( event->active.state & SDL_APPACTIVE ) printf("active "); if ( event->active.state & SDL_APPINPUTFOCUS ) printf("input "); if ( event->active.state & SDL_APPMOUSEFOCUS ) printf("mouse "); printf("focus\n"); /* See if we are iconified or restored */ if ( event->active.state & SDL_APPACTIVE ) { printf("App has been %s\n", event->active.gain ? "restored" : "iconified"); } return(0); /* We want to toggle visibility on buttonpress */ case SDL_MOUSEBUTTONDOWN: case SDL_MOUSEBUTTONUP: if ( event->button.state == SDL_PRESSED ) { visible = !visible; SDL_ShowCursor(visible); } printf("Mouse button %d has been %s\n", event->button.button, (event->button.state == SDL_PRESSED) ? "pressed" : "released"); return(0); /* Show relative mouse motion */ case SDL_MOUSEMOTION: #if 0 printf("Mouse motion: {%d,%d} (%d,%d)\n", event->motion.x, event->motion.y, event->motion.xrel, event->motion.yrel); #endif return(0); case SDL_KEYDOWN: if ( event->key.keysym.sym == SDLK_ESCAPE ) { HotKey_Quit(); } if ( (event->key.keysym.sym == SDLK_g) && (event->key.keysym.mod & KMOD_CTRL) ) { HotKey_ToggleGrab(); } if ( (event->key.keysym.sym == SDLK_z) && (event->key.keysym.mod & KMOD_CTRL) ) { HotKey_Iconify(); } if ( (event->key.keysym.sym == SDLK_RETURN) && (event->key.keysym.mod & KMOD_ALT) ) { HotKey_ToggleFullScreen(); } return(0); /* Pass the video resize event through .. */ case SDL_VIDEORESIZE: return(1); /* This is important! Queue it if we want to quit. */ case SDL_QUIT: if ( ! reallyquit ) { reallyquit = 1; printf("Quit requested\n"); return(0); } printf("Quit demanded\n"); return(1); /* This will never happen because events queued directly to the event queue are not filtered. */ case SDL_USEREVENT: return(1); /* Drop all other events */ default: return(0); } } int main(int argc, char *argv[]) { SDL_Event event; char *title; SDL_Surface *icon; Uint8 *icon_mask; int parsed; int w, h; if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return(1); } /* Check command line arguments */ w = 640; h = 480; video_bpp = 8; video_flags = SDL_SWSURFACE; parsed = 1; while ( parsed ) { if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) { video_flags |= SDL_FULLSCREEN; argc -= 1; argv += 1; } else if ( (argc >= 2) && (strcmp(argv[1], "-resize") == 0) ) { video_flags |= SDL_RESIZABLE; argc -= 1; argv += 1; } else if ( (argc >= 2) && (strcmp(argv[1], "-noframe") == 0) ) { video_flags |= SDL_NOFRAME; argc -= 1; argv += 1; } else if ( (argc >= 3) && (strcmp(argv[1], "-width") == 0) ) { w = atoi(argv[2]); argc -= 2; argv += 2; } else if ( (argc >= 3) && (strcmp(argv[1], "-height") == 0) ) { h = atoi(argv[2]); argc -= 2; argv += 2; } else if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) { video_bpp = atoi(argv[2]); argc -= 2; argv += 2; } else { parsed = 0; } } /* Set the icon -- this must be done before the first mode set */ icon = LoadIconSurface("icon.bmp", &icon_mask); if ( icon != NULL ) { SDL_WM_SetIcon(icon, icon_mask); } if ( icon_mask != NULL ) free(icon_mask); /* Set the title bar */ if ( argv[1] == NULL ) title = "Testing 1.. 2.. 3..."; else title = argv[1]; SDL_WM_SetCaption(title, "testwm"); /* See if it's really set */ SDL_WM_GetCaption(&title, NULL); if ( title ) printf("Title was set to: %s\n", title); else printf("No window title was set!\n"); /* Initialize the display */ if ( SetVideoMode(w, h) < 0 ) { quit(1); } /* Set an event filter that discards everything but QUIT */ SDL_SetEventFilter(FilterEvents); /* Ignore key up events, they don't even get filtered */ SDL_EventState(SDL_KEYUP, SDL_IGNORE); /* Loop, waiting for QUIT */ while ( SDL_WaitEvent(&event) ) { switch (event.type) { case SDL_VIDEORESIZE: printf("Got a resize event: %dx%d\n", event.resize.w, event.resize.h); SetVideoMode(event.resize.w, event.resize.h); break; case SDL_USEREVENT: printf("Handling internal quit request\n"); /* Fall through to the quit handler */ case SDL_QUIT: printf("Bye bye..\n"); quit(0); default: /* This should never happen */ printf("Warning: Event %d wasn't filtered\n", event.type); break; } } printf("SDL_WaitEvent() error: %s\n", SDL_GetError()); SDL_Quit(); return(255); }