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Draw an additional white bit for each invert bit of a cursor.

This commit is contained in:
Achim Kaiser 1999-07-24 12:16:58 +00:00 committed by Alexandre Julliard
parent 36d7ca38b8
commit 564b784402
1 changed files with 23 additions and 8 deletions
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31
windows/x11drv/mouse.c
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@ -30,7 +30,7 @@ static BOOL X11DRV_MOUSE_WarpPointer = TRUE; /* hack; see DISPLAY_MoveCursor */
*/
static BOOL X11DRV_MOUSE_DoSetCursor( CURSORICONINFO *ptr )
{
Pixmap pixmapBits, pixmapMask, pixmapAll;
Pixmap pixmapBits, pixmapMask, pixmapMaskInv, pixmapAll;
XColor fg, bg;
Cursor cursor = None;
@ -88,6 +88,8 @@ static BOOL X11DRV_MOUSE_DoSetCursor( CURSORICONINFO *ptr )
ptr->nWidth, ptr->nHeight, 1 );
pixmapMask = XCreatePixmap( display, X11DRV_GetXRootWindow(),
ptr->nWidth, ptr->nHeight, 1 );
pixmapMaskInv = XCreatePixmap( display, X11DRV_GetXRootWindow(),
ptr->nWidth, ptr->nHeight, 1 );
/* Make sure everything went OK so far */
@ -97,34 +99,46 @@ static BOOL X11DRV_MOUSE_DoSetCursor( CURSORICONINFO *ptr )
* compatible between Windows and X11. Under X11, there
* are only 3 possible color cursor: black, white and
* masked. So we map the 4th Windows color (invert the
* bits on the screen) to black. This require some boolean
* arithmetic:
* bits on the screen) to black and an additional white bit on
* an other place (+1,+1). This require some boolean arithmetic:
*
* Windows | X11
* Xor And Result | Bits Mask Result
* And Xor Result | Bits Mask Result
* 0 0 black | 0 1 background
* 0 1 no change | X 0 no change
* 1 0 white | 1 1 foreground
* 0 1 white | 1 1 foreground
* 1 0 no change | X 0 no change
* 1 1 inverted | 0 1 background
*
* which gives:
* Bits = 'Xor' and not 'And'
* Mask = 'Xor' or not 'And'
* Bits = not 'And' and 'Xor' or 'And2' and 'Xor2'
* Mask = not 'And' or 'Xor' or 'And2' and 'Xor2'
*
* FIXME: apparently some servers do support 'inverted' color.
* I don't know if it's correct per the X spec, but maybe
* we ought to take advantage of it. -- AJ
*/
XSetFunction( display, BITMAP_monoGC, GXcopy );
XCopyArea( display, pixmapAll, pixmapBits, BITMAP_monoGC,
0, 0, ptr->nWidth, ptr->nHeight, 0, 0 );
XCopyArea( display, pixmapAll, pixmapMask, BITMAP_monoGC,
0, 0, ptr->nWidth, ptr->nHeight, 0, 0 );
XCopyArea( display, pixmapAll, pixmapMaskInv, BITMAP_monoGC,
0, 0, ptr->nWidth, ptr->nHeight, 0, 0 );
XSetFunction( display, BITMAP_monoGC, GXand );
XCopyArea( display, pixmapAll, pixmapMaskInv, BITMAP_monoGC,
0, ptr->nHeight, ptr->nWidth, ptr->nHeight, 0, 0 );
XSetFunction( display, BITMAP_monoGC, GXandReverse );
XCopyArea( display, pixmapAll, pixmapBits, BITMAP_monoGC,
0, ptr->nHeight, ptr->nWidth, ptr->nHeight, 0, 0 );
XSetFunction( display, BITMAP_monoGC, GXorReverse );
XCopyArea( display, pixmapAll, pixmapMask, BITMAP_monoGC,
0, ptr->nHeight, ptr->nWidth, ptr->nHeight, 0, 0 );
/* Additional white */
XSetFunction( display, BITMAP_monoGC, GXor );
XCopyArea( display, pixmapMaskInv, pixmapMask, BITMAP_monoGC,
0, 0, ptr->nWidth, ptr->nHeight, 1, 1 );
XCopyArea( display, pixmapMaskInv, pixmapBits, BITMAP_monoGC,
0, 0, ptr->nWidth, ptr->nHeight, 1, 1 );
XSetFunction( display, BITMAP_monoGC, GXcopy );
fg.red = fg.green = fg.blue = 0xffff;
bg.red = bg.green = bg.blue = 0x0000;
@ -137,6 +151,7 @@ static BOOL X11DRV_MOUSE_DoSetCursor( CURSORICONINFO *ptr )
if (pixmapAll) XFreePixmap( display, pixmapAll );
if (pixmapBits) XFreePixmap( display, pixmapBits );
if (pixmapMask) XFreePixmap( display, pixmapMask );
if (pixmapMaskInv) XFreePixmap( display, pixmapMaskInv );
}
if (cursor == None) return FALSE;