376 lines
10 KiB
C
376 lines
10 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@devolution.com
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id$";
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include "SDL_version.h"
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#include "SDL_error.h"
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#include "SDL_timer.h"
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#include "SDL_video.h"
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#include "SDL_syswm.h"
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#include "SDL_events_c.h"
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#include "SDL_pixels_c.h"
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#include "SDL_x11modes_c.h"
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#include "SDL_x11wm_c.h"
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static Uint8 reverse_byte(Uint8 x)
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{
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x = (x & 0xaa) >> 1 | (x & 0x55) << 1;
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x = (x & 0xcc) >> 2 | (x & 0x33) << 2;
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x = (x & 0xf0) >> 4 | (x & 0x0f) << 4;
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return x;
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}
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void X11_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
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{
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SDL_Surface *sicon;
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XWMHints *wmhints;
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XImage *icon_image;
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Pixmap icon_pixmap;
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Pixmap mask_pixmap;
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Window icon_window = None;
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GC gc;
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XGCValues GCvalues;
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int i, dbpp;
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SDL_Rect bounds;
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Uint8 *LSBmask;
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Visual *dvis;
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char *p;
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int masksize;
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SDL_Lock_EventThread();
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/* The icon must use the default visual, depth and colormap of the
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screen, so it might need a conversion */
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dvis = DefaultVisual(SDL_Display, SDL_Screen);
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dbpp = DefaultDepth(SDL_Display, SDL_Screen);
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for(i = 0; i < this->hidden->nvisuals; i++) {
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if(this->hidden->visuals[i].visual == dvis) {
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dbpp = this->hidden->visuals[i].bpp;
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break;
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}
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}
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/* The Visual struct is supposed to be opaque but we cheat a little */
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sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
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dbpp,
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dvis->red_mask, dvis->green_mask,
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dvis->blue_mask, 0);
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if ( sicon == NULL )
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goto done;
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if(dbpp == 8) {
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/* Default visual is 8bit; we need to allocate colours from
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the default colormap */
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SDL_Color want[256], got[256];
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int nwant;
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Colormap dcmap;
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int missing;
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dcmap = DefaultColormap(SDL_Display, SDL_Screen);
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if(icon->format->palette) {
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/* The icon has a palette as well - we just have to
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find those colours */
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nwant = icon->format->palette->ncolors;
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memcpy(want, icon->format->palette->colors,
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nwant * sizeof want[0]);
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} else {
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/* try the standard 6x6x6 cube for lack of better
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ideas */
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int r, g, b, i;
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for(r = i = 0; r < 256; r += 0x33)
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for(g = 0; g < 256; g += 0x33)
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for(b = 0; b < 256; b += 0x33, i++) {
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want[i].r = r;
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want[i].g = g;
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want[i].b = b;
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}
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nwant = 216;
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}
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if(SDL_iconcolors) {
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/* free already allocated colours first */
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unsigned long freelist[512];
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int nfree = 0;
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for(i = 0; i < 256; i++) {
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while(SDL_iconcolors[i]) {
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freelist[nfree++] = i;
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SDL_iconcolors[i]--;
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}
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}
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XFreeColors(GFX_Display, dcmap, freelist, nfree, 0);
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}
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if(!SDL_iconcolors)
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SDL_iconcolors = malloc(256 * sizeof *SDL_iconcolors);
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memset(SDL_iconcolors, 0, 256 * sizeof *SDL_iconcolors);
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/* try to allocate the colours */
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memset(got, 0, sizeof got);
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missing = 0;
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for(i = 0; i < nwant; i++) {
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XColor c;
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c.red = want[i].r << 8;
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c.green = want[i].g << 8;
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c.blue = want[i].b << 8;
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c.flags = DoRed | DoGreen | DoBlue;
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if(XAllocColor(GFX_Display, dcmap, &c)) {
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/* got the colour */
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SDL_iconcolors[c.pixel]++;
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got[c.pixel] = want[i];
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} else {
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missing = 1;
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}
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}
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if(missing) {
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/* Some colours were apparently missing, so we just
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allocate all the rest as well */
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XColor cols[256];
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for(i = 0; i < 256; i++)
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cols[i].pixel = i;
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XQueryColors(GFX_Display, dcmap, cols, 256);
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for(i = 0; i < 256; i++) {
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got[i].r = cols[i].red >> 8;
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got[i].g = cols[i].green >> 8;
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got[i].b = cols[i].blue >> 8;
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if(!SDL_iconcolors[i]) {
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if(XAllocColor(GFX_Display, dcmap,
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cols + i)) {
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SDL_iconcolors[i] = 1;
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} else {
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/* index not available */
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got[i].r = 0;
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got[i].g = 0;
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got[i].b = 0;
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}
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}
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}
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}
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SDL_SetColors(sicon, got, 0, 256);
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}
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bounds.x = 0;
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bounds.y = 0;
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bounds.w = icon->w;
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bounds.h = icon->h;
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if ( SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0 )
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goto done;
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/* We need the mask as given, except in LSBfirst format instead of
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MSBfirst. Reverse the bits in each byte. */
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masksize = ((sicon->w + 7) >> 3) * sicon->h;
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LSBmask = malloc(masksize);
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if ( LSBmask == NULL ) {
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goto done;
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}
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memset(LSBmask, 0, masksize);
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for(i = 0; i < masksize; i++)
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LSBmask[i] = reverse_byte(mask[i]);
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mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
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(char *)LSBmask,
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sicon->w, sicon->h,
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1L, 0L, 1);
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/* Transfer the image to an X11 pixmap */
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icon_image = XCreateImage(SDL_Display,
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DefaultVisual(SDL_Display, SDL_Screen),
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DefaultDepth(SDL_Display, SDL_Screen),
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ZPixmap, 0, sicon->pixels,
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sicon->w, sicon->h,
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32, 0);
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icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
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DefaultDepth(SDL_Display, SDL_Screen));
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gc = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
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XPutImage(SDL_Display, icon_pixmap, gc, icon_image,
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0, 0, 0, 0, sicon->w, sicon->h);
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XFreeGC(SDL_Display, gc);
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XDestroyImage(icon_image);
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free(LSBmask);
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sicon->pixels = NULL;
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/* Some buggy window managers (some versions of Enlightenment, it
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seems) need an icon window *and* icon pixmap to work properly, while
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it screws up others. The default is only to use a pixmap. */
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p = getenv("SDL_VIDEO_X11_ICONWIN");
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if(p && *p) {
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icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
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0, 0, sicon->w, sicon->h, 0,
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CopyFromParent,
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CopyFromParent);
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XSetWindowBackgroundPixmap(SDL_Display, icon_window,
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icon_pixmap);
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XClearWindow(SDL_Display, icon_window);
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}
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/* Set the window icon to the icon pixmap (and icon window) */
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wmhints = XAllocWMHints();
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wmhints->flags = (IconPixmapHint | IconMaskHint);
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wmhints->icon_pixmap = icon_pixmap;
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wmhints->icon_mask = mask_pixmap;
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if(icon_window != None) {
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wmhints->flags |= IconWindowHint;
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wmhints->icon_window = icon_window;
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}
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XSetWMHints(SDL_Display, WMwindow, wmhints);
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XFree(wmhints);
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XSync(SDL_Display, False);
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done:
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SDL_Unlock_EventThread();
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SDL_FreeSurface(sicon);
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}
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void X11_SetCaption(_THIS, const char *title, const char *icon)
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{
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XTextProperty titleprop, iconprop;
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/* Lock the event thread, in multi-threading environments */
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SDL_Lock_EventThread();
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if ( title != NULL ) {
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XStringListToTextProperty((char **)&title, 1, &titleprop);
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XSetWMName(SDL_Display, WMwindow, &titleprop);
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XFree(titleprop.value);
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}
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if ( icon != NULL ) {
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XStringListToTextProperty((char **)&icon, 1, &iconprop);
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XSetWMIconName(SDL_Display, WMwindow, &iconprop);
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XFree(iconprop.value);
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}
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XSync(SDL_Display, False);
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SDL_Unlock_EventThread();
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}
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/* Iconify the window */
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int X11_IconifyWindow(_THIS)
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{
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int result;
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SDL_Lock_EventThread();
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result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
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XSync(SDL_Display, False);
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SDL_Unlock_EventThread();
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return(result);
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}
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SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
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{
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int result;
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if ( this->screen == NULL ) {
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return(SDL_GRAB_OFF);
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}
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if ( ! SDL_Window ) {
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return(mode); /* Will be set later on mode switch */
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}
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if ( mode == SDL_GRAB_OFF ) {
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XUngrabPointer(SDL_Display, CurrentTime);
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XUngrabKeyboard(SDL_Display, CurrentTime);
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} else {
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if ( this->screen->flags & SDL_FULLSCREEN ) {
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/* Unbind the mouse from the fullscreen window */
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XUngrabPointer(SDL_Display, CurrentTime);
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}
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/* Try to grab the mouse */
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#if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
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for ( numtries = 0; numtries < 10; ++numtries ) {
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#else
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while ( 1 ) {
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#endif
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result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
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GrabModeAsync, GrabModeAsync,
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SDL_Window, None, CurrentTime);
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if ( result == GrabSuccess ) {
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break;
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}
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SDL_Delay(100);
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}
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if ( result != GrabSuccess ) {
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/* Uh, oh, what do we do here? */ ;
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}
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/* Now grab the keyboard */
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XGrabKeyboard(SDL_Display, WMwindow, True,
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GrabModeAsync, GrabModeAsync, CurrentTime);
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/* Raise the window if we grab the mouse */
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if ( !(this->screen->flags & SDL_FULLSCREEN) )
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XRaiseWindow(SDL_Display, WMwindow);
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/* Make sure we register input focus */
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SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
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}
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XSync(SDL_Display, False);
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return(mode);
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}
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SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
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{
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SDL_Lock_EventThread();
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mode = X11_GrabInputNoLock(this, mode);
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SDL_Unlock_EventThread();
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return(mode);
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}
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/* If 'info' is the right version, this function fills it and returns 1.
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Otherwise, in case of a version mismatch, it returns -1.
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*/
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static void lock_display(void)
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{
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SDL_Lock_EventThread();
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}
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static void unlock_display(void)
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{
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/* Make sure any X11 transactions are completed */
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SDL_VideoDevice *this = current_video;
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XSync(SDL_Display, False);
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SDL_Unlock_EventThread();
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}
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int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
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{
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if ( info->version.major <= SDL_MAJOR_VERSION ) {
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info->subsystem = SDL_SYSWM_X11;
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info->info.x11.display = SDL_Display;
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info->info.x11.window = SDL_Window;
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if ( SDL_VERSIONNUM(info->version.major,
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info->version.minor,
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info->version.patch) >= 1002 ) {
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info->info.x11.fswindow = FSwindow;
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info->info.x11.wmwindow = WMwindow;
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}
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info->info.x11.lock_func = lock_display;
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info->info.x11.unlock_func = unlock_display;
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return(1);
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} else {
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SDL_SetError("Application not compiled with SDL %d.%d\n",
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SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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return(-1);
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}
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}
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