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SDL_x11wm.c
436 lines (399 loc) · 14 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "SDL_version.h"
#include "SDL_timer.h"
#include "SDL_video.h"
#include "SDL_syswm.h"
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#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_x11modes_c.h"
#include "SDL_x11wm_c.h"
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static Uint8
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reverse_byte(Uint8 x)
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{
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x = (x & 0xaa) >> 1 | (x & 0x55) << 1;
x = (x & 0xcc) >> 2 | (x & 0x33) << 2;
x = (x & 0xf0) >> 4 | (x & 0x0f) << 4;
return x;
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}
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void
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X11_SetIcon(_THIS, SDL_Surface * icon, Uint8 * mask)
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{
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SDL_Surface *sicon;
XWMHints *wmhints;
XImage *icon_image;
Pixmap icon_pixmap;
Pixmap mask_pixmap;
Window icon_window = None;
GC gc;
XGCValues GCvalues;
int i, dbpp;
SDL_Rect bounds;
Uint8 *LSBmask;
Visual *dvis;
char *p;
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
screen, so it might need a conversion */
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dvis = DefaultVisual(SDL_Display, SDL_Screen);
dbpp = DefaultDepth(SDL_Display, SDL_Screen);
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for (i = 0; i < this->hidden->nvisuals; i++) {
if (this->hidden->visuals[i].visual == dvis) {
dbpp = this->hidden->visuals[i].bpp;
break;
}
}
/* 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,
dbpp,
dvis->red_mask, dvis->green_mask,
dvis->blue_mask, 0);
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if (sicon == NULL)
goto done;
if (dbpp == 8) {
/* Default visual is 8bit; we need to allocate colours from
the default colormap */
SDL_Color want[256], got[256];
int nwant;
Colormap dcmap;
int missing;
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dcmap = DefaultColormap(SDL_Display, SDL_Screen);
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if (icon->format->palette) {
/* The icon has a palette as well - we just have to
find those colours */
nwant = icon->format->palette->ncolors;
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SDL_memcpy(want, icon->format->palette->colors,
nwant * sizeof want[0]);
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} else {
/* try the standard 6x6x6 cube for lack of better
ideas */
int r, g, b, i;
for (r = i = 0; r < 256; r += 0x33)
for (g = 0; g < 256; g += 0x33)
for (b = 0; b < 256; b += 0x33, i++) {
want[i].r = r;
want[i].g = g;
want[i].b = b;
}
nwant = 216;
}
if (SDL_iconcolors) {
/* free already allocated colours first */
unsigned long freelist[512];
int nfree = 0;
for (i = 0; i < 256; i++) {
while (SDL_iconcolors[i]) {
freelist[nfree++] = i;
SDL_iconcolors[i]--;
}
}
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XFreeColors(GFX_Display, dcmap, freelist, nfree, 0);
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}
if (!SDL_iconcolors)
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SDL_iconcolors = SDL_malloc(256 * sizeof *SDL_iconcolors);
SDL_memset(SDL_iconcolors, 0, 256 * sizeof *SDL_iconcolors);
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/* try to allocate the colours */
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SDL_memset(got, 0, sizeof got);
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missing = 0;
for (i = 0; i < nwant; i++) {
XColor c;
c.red = want[i].r << 8;
c.green = want[i].g << 8;
c.blue = want[i].b << 8;
c.flags = DoRed | DoGreen | DoBlue;
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if (XAllocColor(GFX_Display, dcmap, &c)) {
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/* got the colour */
SDL_iconcolors[c.pixel]++;
got[c.pixel] = want[i];
} else {
missing = 1;
}
}
if (missing) {
/* Some colours were apparently missing, so we just
allocate all the rest as well */
XColor cols[256];
for (i = 0; i < 256; i++)
cols[i].pixel = i;
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XQueryColors(GFX_Display, dcmap, cols, 256);
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for (i = 0; i < 256; i++) {
got[i].r = cols[i].red >> 8;
got[i].g = cols[i].green >> 8;
got[i].b = cols[i].blue >> 8;
if (!SDL_iconcolors[i]) {
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if (XAllocColor(GFX_Display, dcmap, cols + i)) {
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SDL_iconcolors[i] = 1;
} else {
/* index not available */
got[i].r = 0;
got[i].g = 0;
got[i].b = 0;
}
}
}
}
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SDL_SetColors(sicon, got, 0, 256);
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}
bounds.x = 0;
bounds.y = 0;
bounds.w = icon->w;
bounds.h = icon->h;
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if (SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0)
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goto done;
/* We need the mask as given, except in LSBfirst format instead of
MSBfirst. Reverse the bits in each byte. */
masksize = ((sicon->w + 7) >> 3) * sicon->h;
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LSBmask = SDL_malloc(masksize);
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if (LSBmask == NULL) {
goto done;
}
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SDL_memset(LSBmask, 0, masksize);
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for (i = 0; i < masksize; i++)
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LSBmask[i] = reverse_byte(mask[i]);
mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
(char *) LSBmask,
sicon->w, sicon->h, 1L, 0L, 1);
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/* Transfer the image to an X11 pixmap */
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icon_image = XCreateImage(SDL_Display,
DefaultVisual(SDL_Display, SDL_Screen),
DefaultDepth(SDL_Display, SDL_Screen),
ZPixmap, 0, sicon->pixels,
sicon->w, sicon->h, 32, 0);
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icon_image->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN)
? MSBFirst : LSBFirst;
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icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
DefaultDepth(SDL_Display, SDL_Screen));
gc = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
XPutImage(SDL_Display, icon_pixmap, gc, icon_image,
0, 0, 0, 0, sicon->w, sicon->h);
XFreeGC(SDL_Display, gc);
XDestroyImage(icon_image);
SDL_free(LSBmask);
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sicon->pixels = NULL;
/* Some buggy window managers (some versions of Enlightenment, it
seems) need an icon window *and* icon pixmap to work properly, while
it screws up others. The default is only to use a pixmap. */
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p = SDL_getenv("SDL_VIDEO_X11_ICONWIN");
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if (p && *p) {
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icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
0, 0, sicon->w, sicon->h, 0,
CopyFromParent, CopyFromParent);
XSetWindowBackgroundPixmap(SDL_Display, icon_window, icon_pixmap);
XClearWindow(SDL_Display, icon_window);
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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);
wmhints->icon_pixmap = icon_pixmap;
wmhints->icon_mask = mask_pixmap;
if (icon_window != None) {
wmhints->flags |= IconWindowHint;
wmhints->icon_window = icon_window;
}
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XSetWMHints(SDL_Display, WMwindow, wmhints);
XFree(wmhints);
XSync(SDL_Display, False);
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done:
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SDL_Unlock_EventThread();
SDL_FreeSurface(sicon);
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}
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void
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X11_SetCaptionNoLock(_THIS, const char *title, const char *icon)
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{
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XTextProperty titleprop, iconprop;
Status status;
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#ifdef X_HAVE_UTF8_STRING
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Atom _NET_WM_NAME;
Atom _NET_WM_ICON_NAME;
/* Look up some useful Atoms */
if (SDL_X11_HAVE_UTF8) {
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_NET_WM_NAME = XInternAtom(SDL_Display, "_NET_WM_NAME", False);
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_NET_WM_ICON_NAME =
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XInternAtom(SDL_Display, "_NET_WM_ICON_NAME", False);
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}
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#endif
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if (title != NULL) {
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char *title_latin1 = SDL_iconv_utf8_latin1((char *) title);
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if (!title_latin1) {
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SDL_OutOfMemory();
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return;
}
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status = XStringListToTextProperty(&title_latin1, 1, &titleprop);
SDL_free(title_latin1);
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if (status) {
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XSetTextProperty(SDL_Display, WMwindow, &titleprop, XA_WM_NAME);
XFree(titleprop.value);
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}
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#ifdef X_HAVE_UTF8_STRING
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if (SDL_X11_HAVE_UTF8) {
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status = Xutf8TextListToTextProperty(SDL_Display,
(char **) &title, 1,
XUTF8StringStyle,
&titleprop);
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if (status == Success) {
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XSetTextProperty(SDL_Display, WMwindow, &titleprop,
_NET_WM_NAME);
XFree(titleprop.value);
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}
}
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#endif
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}
if (icon != NULL) {
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char *icon_latin1 = SDL_iconv_utf8_latin1((char *) icon);
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if (!icon_latin1) {
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SDL_OutOfMemory();
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return;
}
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status = XStringListToTextProperty(&icon_latin1, 1, &iconprop);
SDL_free(icon_latin1);
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if (status) {
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XSetTextProperty(SDL_Display, WMwindow, &iconprop,
XA_WM_ICON_NAME);
XFree(iconprop.value);
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}
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#ifdef X_HAVE_UTF8_STRING
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if (SDL_X11_HAVE_UTF8) {
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status = Xutf8TextListToTextProperty(SDL_Display,
(char **) &icon, 1,
XUTF8StringStyle, &iconprop);
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if (status == Success) {
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XSetTextProperty(SDL_Display, WMwindow, &iconprop,
_NET_WM_ICON_NAME);
XFree(iconprop.value);
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}
}
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#endif
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}
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XSync(SDL_Display, False);
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}
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void
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X11_SetCaption(_THIS, const char *title, const char *icon)
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{
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SDL_Lock_EventThread();
X11_SetCaptionNoLock(this, title, icon);
SDL_Unlock_EventThread();
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}
/* Iconify the window */
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int
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X11_IconifyWindow(_THIS)
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{
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int result;
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SDL_Lock_EventThread();
result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
XSync(SDL_Display, False);
SDL_Unlock_EventThread();
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return (result);
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}
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SDL_GrabMode
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X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
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{
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int result;
if (SDL_VideoSurface == NULL) {
return (SDL_GRAB_OFF);
}
if (!SDL_Window) {
return (mode); /* Will be set later on mode switch */
}
if (mode == SDL_GRAB_OFF) {
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XUngrabPointer(SDL_Display, CurrentTime);
XUngrabKeyboard(SDL_Display, CurrentTime);
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} else {
if (SDL_VideoSurface->flags & SDL_FULLSCREEN) {
/* Unbind the mouse from the fullscreen window */
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XUngrabPointer(SDL_Display, CurrentTime);
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}
/* Try to grab the mouse */
#if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
for (numtries = 0; numtries < 10; ++numtries) {
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#else
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for (;;) {
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#endif
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result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
GrabModeAsync, GrabModeAsync,
SDL_Window, None, CurrentTime);
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if (result == GrabSuccess) {
break;
}
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SDL_Delay(100);
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}
if (result != GrabSuccess) {
/* Uh, oh, what do we do here? */ ;
}
/* Now grab the keyboard */
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XGrabKeyboard(SDL_Display, WMwindow, True,
GrabModeAsync, GrabModeAsync, CurrentTime);
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/* Raise the window if we grab the mouse */
if (!(SDL_VideoSurface->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
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X11_GrabInput(_THIS, SDL_GrabMode mode)
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{
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SDL_Lock_EventThread();
mode = X11_GrabInputNoLock(this, mode);
SDL_Unlock_EventThread();
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return (mode);
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}
/* If 'info' is the right version, this function fills it and returns 1.
Otherwise, in case of a version mismatch, it returns -1.
*/
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static void
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lock_display(void)
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{
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SDL_Lock_EventThread();
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}
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static void
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unlock_display(void)
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{
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/* Make sure any X11 transactions are completed */
SDL_VideoDevice *this = current_video;
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XSync(SDL_Display, False);
SDL_Unlock_EventThread();
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}
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int
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X11_GetWMInfo(_THIS, SDL_SysWMinfo * info)
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{
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if (info->version.major <= SDL_MAJOR_VERSION) {
info->subsystem = SDL_SYSWM_X11;
info->info.x11.display = SDL_Display;
info->info.x11.window = SDL_Window;
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if (SDL_VERSIONNUM(info->version.major,
info->version.minor,
info->version.patch) >= 1002) {
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info->info.x11.fswindow = FSwindow;
info->info.x11.wmwindow = WMwindow;
}
info->info.x11.lock_func = lock_display;
info->info.x11.unlock_func = unlock_display;
return (1);
} else {
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SDL_SetError("Application not compiled with SDL %d.%d\n",
SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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return (-1);
}
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}
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/* vi: set ts=4 sw=4 expandtab: */