/*****
* miHandleValidateExposures(pWin)
* starting at pWin, draw background in any windows that have exposure
* regions, translate the regions, restore any backing store,
* and then send any regions still exposed to the client
*****/
void
miHandleValidateExposures(WindowPtr pWin)
{
WindowPtr pChild;
ValidatePtr val;
WindowExposuresProcPtr WindowExposures;
pChild = pWin;
WindowExposures = pChild->drawable.pScreen->WindowExposures;
while (1) {
if ((val = pChild->valdata)) {
if (RegionNotEmpty(&val->after.borderExposed))
miPaintWindow(pChild, &val->after.borderExposed, PW_BORDER);
RegionUninit(&val->after.borderExposed);
(*WindowExposures) (pChild, &val->after.exposed, NullRegion);
RegionUninit(&val->after.exposed);
free(val);
pChild->valdata = NULL;
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
}
while (!pChild->nextSib && (pChild != pWin))
pChild = pChild->parent;
if (pChild == pWin)
break;
pChild = pChild->nextSib;
}
}
void
miWindowExposures(WindowPtr pWin, RegionPtr prgn)
{
RegionPtr exposures = prgn;
if (prgn && !RegionNil(prgn)) {
RegionRec expRec;
int clientInterested =
(pWin->eventMask | wOtherEventMasks(pWin)) & ExposureMask;
if (clientInterested && (RegionNumRects(prgn) > RECTLIMIT)) {
/*
* If we have LOTS of rectangles, we decide to take the extents
* and force an exposure on that. This should require much less
* work overall, on both client and server. This is cheating, but
* isn't prohibited by the protocol ("spontaneous combustion" :-).
*/
BoxRec box;
box = *RegionExtents(prgn);
exposures = &expRec;
RegionInit(exposures, &box, 1);
RegionReset(prgn, &box);
/* miPaintWindow doesn't clip, so we have to */
RegionIntersect(prgn, prgn, &pWin->clipList);
}
miPaintWindow(pWin, prgn, PW_BACKGROUND);
if (clientInterested)
miSendExposures(pWin, exposures,
pWin->drawable.x, pWin->drawable.y);
if (exposures == &expRec)
RegionUninit(exposures);
RegionEmpty(prgn);
}
}
void
miClearToBackground(WindowPtr pWin,
int x, int y, int w, int h, Bool generateExposures)
{
BoxRec box;
RegionRec reg;
BoxPtr extents;
int x1, y1, x2, y2;
/* compute everything using ints to avoid overflow */
x1 = pWin->drawable.x + x;
y1 = pWin->drawable.y + y;
if (w)
x2 = x1 + (int) w;
else
x2 = x1 + (int) pWin->drawable.width - (int) x;
if (h)
y2 = y1 + h;
else
y2 = y1 + (int) pWin->drawable.height - (int) y;
extents = &pWin->clipList.extents;
/* clip the resulting rectangle to the window clipList extents. This
* makes sure that the result will fit in a box, given that the
* screen is < 32768 on a side.
*/
if (x1 < extents->x1)
x1 = extents->x1;
if (x2 > extents->x2)
x2 = extents->x2;
if (y1 < extents->y1)
y1 = extents->y1;
if (y2 > extents->y2)
y2 = extents->y2;
if (x2 <= x1 || y2 <= y1) {
x2 = x1 = 0;
y2 = y1 = 0;
}
box.x1 = x1;
box.x2 = x2;
box.y1 = y1;
box.y2 = y2;
RegionInit(®, &box, 1);
RegionIntersect(®, ®, &pWin->clipList);
if (generateExposures)
(*pWin->drawable.pScreen->WindowExposures) (pWin, ®, NULL);
else if (pWin->backgroundState != None)
miPaintWindow(pWin, ®, PW_BACKGROUND);
RegionUninit(®);
}
void
winDoRandRScreenSetSize (ScreenPtr pScreen,
CARD16 width,
CARD16 height,
CARD32 mmWidth,
CARD32 mmHeight)
{
winScreenPriv(pScreen);
winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
WindowPtr pRoot = pScreen->root;
// Prevent screen updates while we change things around
SetRootClip(pScreen, FALSE);
/* Update the screen size as requested */
pScreenInfo->dwWidth = width;
pScreenInfo->dwHeight = height;
/* Reallocate the framebuffer used by the drawing engine */
(*pScreenPriv->pwinFreeFB)(pScreen);
if (!(*pScreenPriv->pwinAllocateFB)(pScreen))
{
ErrorF ("winDoRandRScreenSetSize - Could not reallocate framebuffer\n");
}
pScreen->width = width;
pScreen->height = height;
pScreen->mmWidth = mmWidth;
pScreen->mmHeight = mmHeight;
/* Update the screen pixmap to point to the new framebuffer */
winUpdateFBPointer(pScreen, pScreenInfo->pfb);
// pScreen->devPrivate == pScreen->GetScreenPixmap(screen) ?
// resize the root window
//pScreen->ResizeWindow(pRoot, 0, 0, width, height, NULL);
// does this emit a ConfigureNotify??
// Restore the ability to update screen, now with new dimensions
SetRootClip(pScreen, TRUE);
// and arrange for it to be repainted
miPaintWindow(pRoot, &pRoot->borderClip, PW_BACKGROUND);
/* Indicate that a screen size change took place */
RRScreenSizeNotify(pScreen);
}
static void expose_1 (WindowPtr pWin) {
WindowPtr pChild;
if (!pWin->realized)
return;
miPaintWindow(pWin, &pWin->borderClip, PW_BACKGROUND);
/* FIXME: comments in windowstr.h indicate that borderClip doesn't
include subwindow visibility. But I'm not so sure.. so we may
be exposing too much.. */
miSendExposures (pWin, &pWin->borderClip,
pWin->drawable.x, pWin->drawable.y);
for (pChild = pWin->firstChild; pChild != NULL; pChild = pChild->nextSib)
expose_1 (pChild);
}
RegionPtr
miHandleExposures(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
GCPtr pGC, int srcx, int srcy, int width, int height,
int dstx, int dsty, unsigned long plane)
{
RegionPtr prgnSrcClip; /* drawable-relative source clip */
RegionRec rgnSrcRec;
RegionPtr prgnDstClip; /* drawable-relative dest clip */
RegionRec rgnDstRec;
BoxRec srcBox; /* unclipped source */
RegionRec rgnExposed; /* exposed region, calculated source-
relative, made dst relative to
intersect with visible parts of
dest and send events to client,
and then screen relative to paint
the window background
*/
WindowPtr pSrcWin;
BoxRec expBox;
Bool extents;
/* avoid work if we can */
if (!pGC->graphicsExposures &&
(pDstDrawable->type == DRAWABLE_PIXMAP) &&
((pSrcDrawable->type == DRAWABLE_PIXMAP) ||
(((WindowPtr) pSrcDrawable)->backStorage == NULL)))
return NULL;
srcBox.x1 = srcx;
srcBox.y1 = srcy;
srcBox.x2 = srcx + width;
srcBox.y2 = srcy + height;
if (pSrcDrawable->type != DRAWABLE_PIXMAP) {
BoxRec TsrcBox;
TsrcBox.x1 = srcx + pSrcDrawable->x;
TsrcBox.y1 = srcy + pSrcDrawable->y;
TsrcBox.x2 = TsrcBox.x1 + width;
TsrcBox.y2 = TsrcBox.y1 + height;
pSrcWin = (WindowPtr) pSrcDrawable;
if (pGC->subWindowMode == IncludeInferiors) {
prgnSrcClip = NotClippedByChildren(pSrcWin);
if ((RegionContainsRect(prgnSrcClip, &TsrcBox)) == rgnIN) {
RegionDestroy(prgnSrcClip);
return NULL;
}
}
else {
if ((RegionContainsRect(&pSrcWin->clipList, &TsrcBox)) == rgnIN)
return NULL;
prgnSrcClip = &rgnSrcRec;
RegionNull(prgnSrcClip);
RegionCopy(prgnSrcClip, &pSrcWin->clipList);
}
RegionTranslate(prgnSrcClip, -pSrcDrawable->x, -pSrcDrawable->y);
}
else {
BoxRec box;
if ((srcBox.x1 >= 0) && (srcBox.y1 >= 0) &&
(srcBox.x2 <= pSrcDrawable->width) &&
(srcBox.y2 <= pSrcDrawable->height))
return NULL;
box.x1 = 0;
box.y1 = 0;
box.x2 = pSrcDrawable->width;
box.y2 = pSrcDrawable->height;
prgnSrcClip = &rgnSrcRec;
RegionInit(prgnSrcClip, &box, 1);
pSrcWin = NULL;
}
if (pDstDrawable == pSrcDrawable) {
prgnDstClip = prgnSrcClip;
}
else if (pDstDrawable->type != DRAWABLE_PIXMAP) {
if (pGC->subWindowMode == IncludeInferiors) {
prgnDstClip = NotClippedByChildren((WindowPtr) pDstDrawable);
}
else {
prgnDstClip = &rgnDstRec;
RegionNull(prgnDstClip);
RegionCopy(prgnDstClip, &((WindowPtr) pDstDrawable)->clipList);
}
RegionTranslate(prgnDstClip, -pDstDrawable->x, -pDstDrawable->y);
}
else {
BoxRec box;
box.x1 = 0;
box.y1 = 0;
box.x2 = pDstDrawable->width;
box.y2 = pDstDrawable->height;
prgnDstClip = &rgnDstRec;
RegionInit(prgnDstClip, &box, 1);
}
/* drawable-relative source region */
RegionInit(&rgnExposed, &srcBox, 1);
/* now get the hidden parts of the source box */
RegionSubtract(&rgnExposed, &rgnExposed, prgnSrcClip);
/* move them over the destination */
RegionTranslate(&rgnExposed, dstx - srcx, dsty - srcy);
/* intersect with visible areas of dest */
RegionIntersect(&rgnExposed, &rgnExposed, prgnDstClip);
/* intersect with client clip region. */
if (pGC->clientClipType == CT_REGION)
RegionIntersect(&rgnExposed, &rgnExposed, pGC->clientClip);
/*
* If we have LOTS of rectangles, we decide to take the extents
* and force an exposure on that. This should require much less
* work overall, on both client and server. This is cheating, but
* isn't prohibited by the protocol ("spontaneous combustion" :-)
* for windows.
*/
extents = pGC->graphicsExposures &&
(RegionNumRects(&rgnExposed) > RECTLIMIT) &&
(pDstDrawable->type != DRAWABLE_PIXMAP);
if (pSrcWin) {
RegionPtr region;
if (!(region = wClipShape(pSrcWin)))
region = wBoundingShape(pSrcWin);
/*
* If you try to CopyArea the extents of a shaped window, compacting the
* exposed region will undo all our work!
*/
if (extents && pSrcWin && region &&
(RegionContainsRect(region, &srcBox) != rgnIN))
extents = FALSE;
}
if (extents) {
expBox = *RegionExtents(&rgnExposed);
RegionReset(&rgnExposed, &expBox);
}
if ((pDstDrawable->type != DRAWABLE_PIXMAP) &&
(((WindowPtr) pDstDrawable)->backgroundState != None)) {
WindowPtr pWin = (WindowPtr) pDstDrawable;
/* make the exposed area screen-relative */
RegionTranslate(&rgnExposed, pDstDrawable->x, pDstDrawable->y);
if (extents) {
/* miPaintWindow doesn't clip, so we have to */
RegionIntersect(&rgnExposed, &rgnExposed, &pWin->clipList);
}
miPaintWindow((WindowPtr) pDstDrawable, &rgnExposed, PW_BACKGROUND);
if (extents) {
RegionReset(&rgnExposed, &expBox);
}
else
RegionTranslate(&rgnExposed, -pDstDrawable->x, -pDstDrawable->y);
}
if (prgnDstClip == &rgnDstRec) {
RegionUninit(prgnDstClip);
}
else if (prgnDstClip != prgnSrcClip) {
RegionDestroy(prgnDstClip);
}
if (prgnSrcClip == &rgnSrcRec) {
RegionUninit(prgnSrcClip);
}
else {
RegionDestroy(prgnSrcClip);
}
if (pGC->graphicsExposures) {
/* don't look */
RegionPtr exposed = RegionCreate(NullBox, 0);
*exposed = rgnExposed;
return exposed;
}
else {
RegionUninit(&rgnExposed);
return NULL;
}
}
