/*
* SafeAlphaPaintWindow
* Paint the window while filling in the alpha channel with all on.
* We can't use fbPaintWindow because it zeros the alpha channel.
*/
void
SafeAlphaPaintWindow(
WindowPtr pWin,
RegionPtr pRegion,
int what)
{
switch (what) {
case PW_BACKGROUND:
switch (pWin->backgroundState) {
case None:
break;
case ParentRelative:
do {
pWin = pWin->parent;
} while (pWin->backgroundState == ParentRelative);
(*pWin->drawable.pScreen->PaintWindowBackground)(pWin, pRegion,
what);
break;
case BackgroundPixmap:
SafeAlphaFillRegionTiled (&pWin->drawable,
pRegion,
pWin->background.pixmap);
break;
case BackgroundPixel:
{
Pixel pixel = pWin->background.pixel |
RootlessAlphaMask(pWin->drawable.bitsPerPixel);
fbFillRegionSolid (&pWin->drawable, pRegion, 0,
fbReplicatePixel (pixel,
pWin->drawable.bitsPerPixel));
break;
}
}
break;
case PW_BORDER:
if (pWin->borderIsPixel)
{
Pixel pixel = pWin->border.pixel |
RootlessAlphaMask(pWin->drawable.bitsPerPixel);
fbFillRegionSolid (&pWin->drawable, pRegion, 0,
fbReplicatePixel (pixel,
pWin->drawable.bitsPerPixel));
}
else
{
WindowPtr pBgWin;
for (pBgWin = pWin; pBgWin->backgroundState == ParentRelative;
pBgWin = pBgWin->parent);
SafeAlphaFillRegionTiled (&pBgWin->drawable,
pRegion,
pWin->border.pixmap);
}
break;
}
fbValidateDrawable (&pWin->drawable);
}
void
miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
ChangeGCVal gcval[6];
BITS32 gcmask;
GCPtr pGC;
int i;
BoxPtr pbox;
xRectangle *prect;
int numRects;
/*
* Distance from screen to destination drawable, use this
* to adjust rendering coordinates which come in in screen space
*/
int draw_x_off, draw_y_off;
/*
* Tile offset for drawing; these need to align the tile
* to the appropriate window origin
*/
int tile_x_off, tile_y_off;
PixUnion fill;
Bool solid = TRUE;
DrawablePtr drawable = &pWin->drawable;
if (what == PW_BACKGROUND) {
while (pWin->backgroundState == ParentRelative)
pWin = pWin->parent;
draw_x_off = drawable->x;
draw_y_off = drawable->y;
tile_x_off = pWin->drawable.x - draw_x_off;
tile_y_off = pWin->drawable.y - draw_y_off;
fill = pWin->background;
#ifdef COMPOSITE
if (pWin->inhibitBGPaint)
return;
#endif
switch (pWin->backgroundState) {
case None:
return;
case BackgroundPixmap:
solid = FALSE;
break;
}
}
else {
PixmapPtr pixmap;
fill = pWin->border;
solid = pWin->borderIsPixel;
/* servers without pixmaps draw their own borders */
if (!pScreen->GetWindowPixmap)
return;
pixmap = (*pScreen->GetWindowPixmap) ((WindowPtr) drawable);
drawable = &pixmap->drawable;
while (pWin->backgroundState == ParentRelative)
pWin = pWin->parent;
tile_x_off = pWin->drawable.x;
tile_y_off = pWin->drawable.y;
#ifdef COMPOSITE
draw_x_off = pixmap->screen_x;
draw_y_off = pixmap->screen_y;
tile_x_off -= draw_x_off;
tile_y_off -= draw_y_off;
#else
draw_x_off = 0;
draw_y_off = 0;
#endif
}
gcval[0].val = GXcopy;
gcmask = GCFunction;
#ifdef ROOTLESS_SAFEALPHA
/* Bit mask for alpha channel with a particular number of bits per
* pixel. Note that we only care for 32bpp data. Mac OS X uses planar
* alpha for 16bpp.
*/
#define RootlessAlphaMask(bpp) ((bpp) == 32 ? 0xFF000000 : 0)
#endif
if (solid) {
#ifdef ROOTLESS_SAFEALPHA
gcval[1].val =
fill.pixel | RootlessAlphaMask(pWin->drawable.bitsPerPixel);
#else
gcval[1].val = fill.pixel;
#endif
gcval[2].val = FillSolid;
gcmask |= GCForeground | GCFillStyle;
}
else {
int c = 1;
#ifdef ROOTLESS_SAFEALPHA
gcval[c++].val =
((CARD32) -1) & ~RootlessAlphaMask(pWin->drawable.bitsPerPixel);
gcmask |= GCPlaneMask;
#endif
gcval[c++].val = FillTiled;
gcval[c++].ptr = (void *) fill.pixmap;
gcval[c++].val = tile_x_off;
gcval[c++].val = tile_y_off;
gcmask |= GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin;
}
prect = xallocarray(RegionNumRects(prgn), sizeof(xRectangle));
if (!prect)
return;
pGC = GetScratchGC(drawable->depth, drawable->pScreen);
if (!pGC) {
free(prect);
return;
}
ChangeGC(NullClient, pGC, gcmask, gcval);
ValidateGC(drawable, pGC);
numRects = RegionNumRects(prgn);
pbox = RegionRects(prgn);
for (i = numRects; --i >= 0; pbox++, prect++) {
prect->x = pbox->x1 - draw_x_off;
prect->y = pbox->y1 - draw_y_off;
prect->width = pbox->x2 - pbox->x1;
prect->height = pbox->y2 - pbox->y1;
}
prect -= numRects;
(*pGC->ops->PolyFillRect) (drawable, pGC, numRects, prect);
free(prect);
FreeScratchGC(pGC);
}
