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Added color cursor support.
This commit is contained in:
Duane Clark
Alexandre Julliard
parent
1a399a2bb9
commit
3169072b2f
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@ -145,13 +145,10 @@ Cursor X11DRV_GetCursor( Display *display, CURSORICONINFO *ptr )
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{
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XImage *image;
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GC gc;
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if (ptr->bPlanes * ptr->bBitsPerPixel != 1)
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{
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WARN("Cursor has more than 1 bpp!\n" );
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return 0;
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}
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TRACE("Bitmap %dx%d planes=%d bpp=%d bytesperline=%d\n",
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ptr->nWidth, ptr->nHeight, ptr->bPlanes, ptr->bBitsPerPixel,
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ptr->nWidthBytes);
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/* Create a pixmap and transfer all the bits to it */
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/* NOTE: Following hack works, but only because XFree depth
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@ -159,19 +156,143 @@ Cursor X11DRV_GetCursor( Display *display, CURSORICONINFO *ptr )
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* as the Windows cursor data). Perhaps use a more generic
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* algorithm here.
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*/
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/* This pixmap will be written with two bitmaps. The first is
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* the mask and the second is the image.
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*/
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if (!(pixmapAll = XCreatePixmap( display, root_window,
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ptr->nWidth, ptr->nHeight * 2, 1 ))) return 0;
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ptr->nWidth, ptr->nHeight * 2, 1 )))
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return 0;
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if (!(image = XCreateImage( display, visual,
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1, ZPixmap, 0, (char *)(ptr + 1), ptr->nWidth,
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ptr->nHeight * 2, 16, ptr->nWidthBytes))) return 0;
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1, ZPixmap, 0, (char *)(ptr + 1), ptr->nWidth,
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ptr->nHeight * 2, 16, ptr->nWidthBytes/ptr->bBitsPerPixel)))
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{
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XFreePixmap( display, pixmapAll );
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return 0;
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}
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gc = XCreateGC( display, pixmapAll, 0, NULL );
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XSetGraphicsExposures( display, gc, False );
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image->byte_order = MSBFirst;
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image->bitmap_bit_order = MSBFirst;
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image->bitmap_unit = 16;
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_XInitImageFuncPtrs(image);
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XPutImage( display, pixmapAll, gc, image,
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0, 0, 0, 0, ptr->nWidth, ptr->nHeight * 2 );
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if (ptr->bPlanes * ptr->bBitsPerPixel == 1)
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{
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/* A plain old white on black cursor. */
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fg.red = fg.green = fg.blue = 0xffff;
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bg.red = bg.green = bg.blue = 0x0000;
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XPutImage( display, pixmapAll, gc, image,
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0, 0, 0, 0, ptr->nWidth, ptr->nHeight * 2 );
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}
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else
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{
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int rbits, gbits, bbits, red, green, blue;
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int rfg, gfg, bfg, rbg, gbg, bbg;
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int rscale, gscale, bscale;
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int x, y, xmax, ymax, bitIndex, byteIndex, xorIndex;
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unsigned char *theMask, *theImage, theChar;
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int threshold, fgBits, bgBits, bitShifted;
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BYTE pXorBits[128]; /* Up to 32x32 icons */
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switch (ptr->bBitsPerPixel)
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{
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case 24:
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rbits = 8;
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gbits = 8;
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bbits = 8;
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threshold = 0x40;
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break;
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default:
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FIXME("Currently no support for cursors with %d bits per pixel\n",
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ptr->bBitsPerPixel);
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XFreePixmap( display, pixmapAll );
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XFreeGC( display, gc );
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image->data = NULL;
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XDestroyImage( image );
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return 0;
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}
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/* The location of the mask. */
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theMask = (char *)(ptr + 1);
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/* The mask should still be 1 bit per pixel. The color image
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* should immediately follow the mask.
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*/
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theImage = &theMask[ptr->nWidth/8 * ptr->nHeight];
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rfg = gfg = bfg = rbg = gbg = bbg = 0;
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bitIndex = 0;
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byteIndex = 0;
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xorIndex = 0;
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fgBits = 0;
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bitShifted = 0x01;
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xmax = (ptr->nWidth > 32) ? 32 : ptr->nWidth;
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if (ptr->nWidth > 32) {
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ERR("Got a %dx%d cursor. Cannot handle larger than 32x32.\n",
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ptr->nWidth, ptr->nHeight);
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}
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ymax = (ptr->nHeight > 32) ? 32 : ptr->nHeight;
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memset(pXorBits, 0, 128);
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for (y=0; y<ymax; y++)
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{
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for (x=0; x<xmax; x++)
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{
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theChar = theImage[byteIndex++];
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red = green = blue = 0;
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blue = theChar;
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theChar = theImage[byteIndex++];
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green = theChar;
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theChar = theImage[byteIndex++];
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red = theChar;
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if (red+green+blue > threshold)
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{
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rfg += red;
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gfg += green;
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bfg += blue;
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fgBits++;
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pXorBits[xorIndex] |= bitShifted;
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}
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else
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{
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rbg += red;
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gbg += green;
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bbg += blue;
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}
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if (x%8 == 7)
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{
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bitShifted = 0x01;
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xorIndex++;
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}
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else
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bitShifted = bitShifted << 1;
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}
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}
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rscale = 1 << (16 - rbits);
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gscale = 1 << (16 - gbits);
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bscale = 1 << (16 - bbits);
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fg.red = rfg * rscale / fgBits;
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fg.green = gfg * gscale / fgBits;
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fg.blue = bfg * bscale / fgBits;
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bgBits = xmax * ymax - fgBits;
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bg.red = rbg * rscale / bgBits;
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bg.green = gbg * gscale / bgBits;
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bg.blue = bbg * bscale / bgBits;
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pixmapBits = XCreateBitmapFromData( display, root_window, pXorBits, xmax, ymax );
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if (!pixmapBits)
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{
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XFreePixmap( display, pixmapAll );
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XFreeGC( display, gc );
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image->data = NULL;
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XDestroyImage( image );
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return 0;
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}
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/* Put the mask. */
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XPutImage( display, pixmapAll, gc, image,
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0, 0, 0, 0, ptr->nWidth, ptr->nHeight );
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XSetFunction( display, gc, GXcopy );
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/* Put the image */
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XCopyArea( display, pixmapBits, pixmapAll, gc,
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0, 0, xmax, ymax, 0, ptr->nHeight );
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XFreePixmap( display, pixmapBits );
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}
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image->data = NULL;
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XDestroyImage( image );
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@ -230,8 +351,6 @@ Cursor X11DRV_GetCursor( Display *display, CURSORICONINFO *ptr )
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XCopyArea( display, pixmapMaskInv, pixmapBits, gc,
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0, 0, ptr->nWidth, ptr->nHeight, 1, 1 );
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XSetFunction( display, gc, GXcopy );
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fg.red = fg.green = fg.blue = 0xffff;
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bg.red = bg.green = bg.blue = 0x0000;
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cursor = XCreatePixmapCursor( display, pixmapBits, pixmapMask,
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&fg, &bg, ptr->ptHotSpot.x, ptr->ptHotSpot.y );
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}
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