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+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/* $Xorg: miexpose.c,v 1.4 2001/02/09 02:05:20 xorgcvs Exp $ */
+
+#include "X.h"
+#define NEED_EVENTS
+#include "Xproto.h"
+#include "Xprotostr.h"
+
+#include "misc.h"
+#include "regionstr.h"
+#include "scrnintstr.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "pixmap.h"
+#include "input.h"
+
+#include "dixstruct.h"
+#include "mi.h"
+#include "Xmd.h"
+
+extern WindowPtr *WindowTable;
+
+/*
+ machine-independent graphics exposure code. any device that uses
+the region package can call this.
+*/
+
+#ifndef RECTLIMIT
+#define RECTLIMIT 25 /* pick a number, any number > 8 */
+#endif
+
+/* miHandleExposures
+ generate a region for exposures for areas that were copied from obscured or
+non-existent areas to non-obscured areas of the destination. Paint the
+background for the region, if the destination is a window.
+
+NOTE:
+ this should generally be called, even if graphicsExposures is false,
+because this is where bits get recovered from backing store.
+
+NOTE:
+ added argument 'plane' is used to indicate how exposures from backing
+store should be accomplished. If plane is 0 (i.e. no bit plane), CopyArea
+should be used, else a CopyPlane of the indicated plane will be used. The
+exposing is done by the backing store's GraphicsExpose function, of course.
+
+*/
+
+RegionPtr
+miHandleExposures(pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, plane)
+ register DrawablePtr pSrcDrawable;
+ register DrawablePtr pDstDrawable;
+ GCPtr pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+ unsigned long plane;
+{
+ register ScreenPtr pscr = pGC->pScreen;
+ 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 ((RECT_IN_REGION(pscr, prgnSrcClip, &TsrcBox)) == rgnIN)
+ {
+ REGION_DESTROY(pscr, prgnSrcClip);
+ return NULL;
+ }
+ }
+ else
+ {
+ if ((RECT_IN_REGION(pscr, &pSrcWin->clipList, &TsrcBox)) == rgnIN)
+ return NULL;
+ prgnSrcClip = &rgnSrcRec;
+ REGION_INIT(pscr, prgnSrcClip, NullBox, 0);
+ REGION_COPY(pscr, prgnSrcClip, &pSrcWin->clipList);
+ }
+ REGION_TRANSLATE(pscr, 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;
+ REGION_INIT(pscr, prgnSrcClip, &box, 1);
+ pSrcWin = (WindowPtr)NULL;
+ }
+
+ if (pDstDrawable == pSrcDrawable)
+ {
+ prgnDstClip = prgnSrcClip;
+ }
+ else if (pDstDrawable->type != DRAWABLE_PIXMAP)
+ {
+ if (pGC->subWindowMode == IncludeInferiors)
+ {
+ prgnDstClip = NotClippedByChildren((WindowPtr)pDstDrawable);
+ }
+ else
+ {
+ prgnDstClip = &rgnDstRec;
+ REGION_INIT(pscr, prgnDstClip, NullBox, 0);
+ REGION_COPY(pscr, prgnDstClip,
+ &((WindowPtr)pDstDrawable)->clipList);
+ }
+ REGION_TRANSLATE(pscr, prgnDstClip,
+ -pDstDrawable->x, -pDstDrawable->y);
+ }
+ else
+ {
+ BoxRec box;
+
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = pDstDrawable->width;
+ box.y2 = pDstDrawable->height;
+ prgnDstClip = &rgnDstRec;
+ REGION_INIT(pscr, prgnDstClip, &box, 1);
+ }
+
+ /* drawable-relative source region */
+ REGION_INIT(pscr, &rgnExposed, &srcBox, 1);
+
+ /* now get the hidden parts of the source box*/
+ REGION_SUBTRACT(pscr, &rgnExposed, &rgnExposed, prgnSrcClip);
+
+ if (pSrcWin && pSrcWin->backStorage)
+ {
+ /*
+ * Copy any areas from the source backing store. Modifies
+ * rgnExposed.
+ */
+ (* pSrcWin->drawable.pScreen->ExposeCopy) ((WindowPtr)pSrcDrawable,
+ pDstDrawable,
+ pGC,
+ &rgnExposed,
+ srcx, srcy,
+ dstx, dsty,
+ plane);
+ }
+
+ /* move them over the destination */
+ REGION_TRANSLATE(pscr, &rgnExposed, dstx-srcx, dsty-srcy);
+
+ /* intersect with visible areas of dest */
+ REGION_INTERSECT(pscr, &rgnExposed, &rgnExposed, prgnDstClip);
+
+ /*
+ * 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 &&
+ (REGION_NUM_RECTS(&rgnExposed) > RECTLIMIT) &&
+ (pDstDrawable->type != DRAWABLE_PIXMAP);
+#ifdef SHAPE
+ 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 &&
+ (RECT_IN_REGION(pscr, region, &srcBox) != rgnIN))
+ extents = FALSE;
+ }
+#endif
+ if (extents)
+ {
+ WindowPtr pWin = (WindowPtr)pDstDrawable;
+
+ expBox = *REGION_EXTENTS(pscr, &rgnExposed);
+ REGION_RESET(pscr, &rgnExposed, &expBox);
+ /* need to clear out new areas of backing store */
+ if (pWin->backStorage)
+ (void) (* pWin->drawable.pScreen->ClearBackingStore)(
+ pWin,
+ expBox.x1,
+ expBox.y1,
+ expBox.x2 - expBox.x1,
+ expBox.y2 - expBox.y1,
+ FALSE);
+ }
+ if ((pDstDrawable->type != DRAWABLE_PIXMAP) &&
+ (((WindowPtr)pDstDrawable)->backgroundState != None))
+ {
+ WindowPtr pWin = (WindowPtr)pDstDrawable;
+
+ /* make the exposed area screen-relative */
+ REGION_TRANSLATE(pscr, &rgnExposed,
+ pDstDrawable->x, pDstDrawable->y);
+
+ if (extents)
+ {
+ /* PaintWindowBackground doesn't clip, so we have to */
+ REGION_INTERSECT(pscr, &rgnExposed, &rgnExposed, &pWin->clipList);
+ }
+ (*pWin->drawable.pScreen->PaintWindowBackground)(
+ (WindowPtr)pDstDrawable, &rgnExposed, PW_BACKGROUND);
+
+ if (extents)
+ {
+ REGION_RESET(pscr, &rgnExposed, &expBox);
+ }
+ else
+ REGION_TRANSLATE(pscr, &rgnExposed,
+ -pDstDrawable->x, -pDstDrawable->y);
+ }
+ if (prgnDstClip == &rgnDstRec)
+ {
+ REGION_UNINIT(pscr, prgnDstClip);
+ }
+ else if (prgnDstClip != prgnSrcClip)
+ {
+ REGION_DESTROY(pscr, prgnDstClip);
+ }
+
+ if (prgnSrcClip == &rgnSrcRec)
+ {
+ REGION_UNINIT(pscr, prgnSrcClip);
+ }
+ else
+ {
+ REGION_DESTROY(pscr, prgnSrcClip);
+ }
+
+ if (pGC->graphicsExposures)
+ {
+ /* don't look */
+ RegionPtr exposed = REGION_CREATE(pscr, NullBox, 0);
+ *exposed = rgnExposed;
+ return exposed;
+ }
+ else
+ {
+ REGION_UNINIT(pscr, &rgnExposed);
+ return NULL;
+ }
+}
+
+/* send GraphicsExpose events, or a NoExpose event, based on the region */
+
+void
+miSendGraphicsExpose (client, pRgn, drawable, major, minor)
+ ClientPtr client;
+ RegionPtr pRgn;
+ XID drawable;
+ int major;
+ int minor;
+{
+ if (pRgn && !REGION_NIL(pRgn))
+ {
+ xEvent *pEvent;
+ register xEvent *pe;
+ register BoxPtr pBox;
+ register int i;
+ int numRects;
+
+ numRects = REGION_NUM_RECTS(pRgn);
+ pBox = REGION_RECTS(pRgn);
+ if(!(pEvent = (xEvent *)ALLOCATE_LOCAL(numRects * sizeof(xEvent))))
+ return;
+ pe = pEvent;
+
+ for (i=1; i<=numRects; i++, pe++, pBox++)
+ {
+ pe->u.u.type = GraphicsExpose;
+ pe->u.graphicsExposure.drawable = drawable;
+ pe->u.graphicsExposure.x = pBox->x1;
+ pe->u.graphicsExposure.y = pBox->y1;
+ pe->u.graphicsExposure.width = pBox->x2 - pBox->x1;
+ pe->u.graphicsExposure.height = pBox->y2 - pBox->y1;
+ pe->u.graphicsExposure.count = numRects - i;
+ pe->u.graphicsExposure.majorEvent = major;
+ pe->u.graphicsExposure.minorEvent = minor;
+ }
+ TryClientEvents(client, pEvent, numRects,
+ (Mask)0, NoEventMask, NullGrab);
+ DEALLOCATE_LOCAL(pEvent);
+ }
+ else
+ {
+ xEvent event;
+ event.u.u.type = NoExpose;
+ event.u.noExposure.drawable = drawable;
+ event.u.noExposure.majorEvent = major;
+ event.u.noExposure.minorEvent = minor;
+ TryClientEvents(client, &event, 1,
+ (Mask)0, NoEventMask, NullGrab);
+ }
+}
+
+void
+miSendExposures(pWin, pRgn, dx, dy)
+ WindowPtr pWin;
+ RegionPtr pRgn;
+ register int dx, dy;
+{
+ register BoxPtr pBox;
+ int numRects;
+ register xEvent *pEvent, *pe;
+ register int i;
+
+ pBox = REGION_RECTS(pRgn);
+ numRects = REGION_NUM_RECTS(pRgn);
+ if(!(pEvent = (xEvent *) ALLOCATE_LOCAL(numRects * sizeof(xEvent))))
+ return;
+
+ for (i=numRects, pe = pEvent; --i >= 0; pe++, pBox++)
+ {
+ pe->u.u.type = Expose;
+ pe->u.expose.window = pWin->drawable.id;
+ pe->u.expose.x = pBox->x1 - dx;
+ pe->u.expose.y = pBox->y1 - dy;
+ pe->u.expose.width = pBox->x2 - pBox->x1;
+ pe->u.expose.height = pBox->y2 - pBox->y1;
+ pe->u.expose.count = i;
+ }
+ DeliverEvents(pWin, pEvent, numRects, NullWindow);
+ DEALLOCATE_LOCAL(pEvent);
+}
+
+void
+miWindowExposures(pWin, prgn, other_exposed)
+ WindowPtr pWin;
+ register RegionPtr prgn, other_exposed;
+{
+ RegionPtr exposures = prgn;
+ if (pWin->backStorage && prgn)
+ /*
+ * in some cases, backing store will cause a different
+ * region to be exposed than needs to be repainted
+ * (like when a window is mapped). RestoreAreas is
+ * allowed to return a region other than prgn,
+ * in which case this routine will free the resultant
+ * region. If exposures is null, then no events will
+ * be sent to the client; if prgn is empty
+ * no areas will be repainted.
+ */
+ exposures = (*pWin->drawable.pScreen->RestoreAreas)(pWin, prgn);
+ if ((prgn && !REGION_NIL(prgn)) ||
+ (exposures && !REGION_NIL(exposures)) || other_exposed)
+ {
+ RegionRec expRec;
+ int clientInterested;
+
+ /*
+ * Restore from backing-store FIRST.
+ */
+ clientInterested = (pWin->eventMask|wOtherEventMasks(pWin)) & ExposureMask;
+ if (other_exposed)
+ {
+ if (exposures)
+ {
+ REGION_UNION(pWin->drawable.pScreen, other_exposed,
+ exposures,
+ other_exposed);
+ if (exposures != prgn)
+ REGION_DESTROY(pWin->drawable.pScreen, exposures);
+ }
+ exposures = other_exposed;
+ }
+ if (clientInterested && exposures && (REGION_NUM_RECTS(exposures) > 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 = *REGION_EXTENTS( pWin->drawable.pScreen, exposures);
+ if (exposures == prgn) {
+ exposures = &expRec;
+ REGION_INIT( pWin->drawable.pScreen, exposures, &box, 1);
+ REGION_RESET( pWin->drawable.pScreen, prgn, &box);
+ } else {
+ REGION_RESET( pWin->drawable.pScreen, exposures, &box);
+ REGION_UNION( pWin->drawable.pScreen, prgn, prgn, exposures);
+ }
+ /* PaintWindowBackground doesn't clip, so we have to */
+ REGION_INTERSECT( pWin->drawable.pScreen, prgn, prgn, &pWin->clipList);
+ /* need to clear out new areas of backing store, too */
+ if (pWin->backStorage)
+ (void) (* pWin->drawable.pScreen->ClearBackingStore)(
+ pWin,
+ box.x1 - pWin->drawable.x,
+ box.y1 - pWin->drawable.y,
+ box.x2 - box.x1,
+ box.y2 - box.y1,
+ FALSE);
+ }
+ if (prgn && !REGION_NIL(prgn))
+ (*pWin->drawable.pScreen->PaintWindowBackground)(pWin, prgn, PW_BACKGROUND);
+ if (clientInterested && exposures && !REGION_NIL(exposures))
+ miSendExposures(pWin, exposures,
+ pWin->drawable.x, pWin->drawable.y);
+ if (exposures == &expRec)
+ {
+ REGION_UNINIT( pWin->drawable.pScreen, exposures);
+ }
+ else if (exposures && exposures != prgn && exposures != other_exposed)
+ REGION_DESTROY( pWin->drawable.pScreen, exposures);
+ if (prgn)
+ REGION_EMPTY( pWin->drawable.pScreen, prgn);
+ }
+ else if (exposures && exposures != prgn)
+ REGION_DESTROY( pWin->drawable.pScreen, exposures);
+}
+
+
+/*
+ this code is highly unlikely. it is not haile selassie.
+
+ there is some hair here. we can't just use the window's
+clip region as it is, because if we are painting the border,
+the border is not in the client area and so we will be excluded
+when we validate the GC, and if we are painting a parent-relative
+background, the area we want to paint is in some other window.
+since we trust the code calling us to tell us to paint only areas
+that are really ours, we will temporarily give the window a
+clipList the size of the whole screen and an origin at (0,0).
+this more or less assumes that ddX code will do translation
+based on the window's absolute position, and that ValidateGC will
+look at clipList, and that no other fields from the
+window will be used. it's not possible to just draw
+in the root because it may be a different depth.
+
+to get the tile to align correctly we set the GC's tile origin to
+be the (x,y) of the window's upper left corner, after which we
+get the right bits when drawing into the root.
+
+because the clip_mask is being set to None, we may call DoChangeGC with
+fPointer set true, thus we no longer need to install the background or
+border tile in the resource table.
+*/
+
+static RESTYPE ResType = 0;
+static int numGCs = 0;
+static GCPtr screenContext[MAXSCREENS];
+
+/*ARGSUSED*/
+static int
+tossGC (value, id)
+pointer value;
+XID id;
+{
+ GCPtr pGC = (GCPtr)value;
+ screenContext[pGC->pScreen->myNum] = (GCPtr)NULL;
+ FreeGC (pGC, id);
+ numGCs--;
+ if (!numGCs)
+ ResType = 0;
+}
+
+
+void
+miPaintWindow(pWin, prgn, what)
+register WindowPtr pWin;
+RegionPtr prgn;
+int what;
+{
+ int status;
+
+ Bool usingScratchGC = FALSE;
+ WindowPtr pRoot;
+
+#define FUNCTION 0
+#define FOREGROUND 1
+#define TILE 2
+#define FILLSTYLE 3
+#define ABSX 4
+#define ABSY 5
+#define CLIPMASK 6
+#define SUBWINDOW 7
+#define COUNT_BITS 8
+
+ ChangeGCVal gcval[7];
+ ChangeGCVal newValues [COUNT_BITS];
+
+ BITS32 gcmask, index, mask;
+ RegionRec prgnWin;
+ DDXPointRec oldCorner;
+ BoxRec box;
+ WindowPtr pBgWin;
+ GCPtr pGC;
+ register int i;
+ register BoxPtr pbox;
+ register ScreenPtr pScreen = pWin->drawable.pScreen;
+ register xRectangle *prect;
+ int numRects;
+
+ gcmask = 0;
+
+ if (what == PW_BACKGROUND)
+ {
+ switch (pWin->backgroundState) {
+ case None:
+ return;
+ case ParentRelative:
+ (*pWin->parent->drawable.pScreen->PaintWindowBackground)(pWin->parent, prgn, what);
+ return;
+ case BackgroundPixel:
+ newValues[FOREGROUND].val = pWin->background.pixel;
+ newValues[FILLSTYLE].val = FillSolid;
+ gcmask |= GCForeground | GCFillStyle;
+ break;
+ case BackgroundPixmap:
+ newValues[TILE].ptr = (pointer)pWin->background.pixmap;
+ newValues[FILLSTYLE].val = FillTiled;
+ gcmask |= GCTile | GCFillStyle | GCTileStipXOrigin | GCTileStipYOrigin;
+ break;
+ }
+ }
+ else
+ {
+ if (pWin->borderIsPixel)
+ {
+ newValues[FOREGROUND].val = pWin->border.pixel;
+ newValues[FILLSTYLE].val = FillSolid;
+ gcmask |= GCForeground | GCFillStyle;
+ }
+ else
+ {
+ newValues[TILE].ptr = (pointer)pWin->border.pixmap;
+ newValues[FILLSTYLE].val = FillTiled;
+ gcmask |= GCTile | GCFillStyle | GCTileStipXOrigin | GCTileStipYOrigin;
+ }
+ }
+
+ prect = (xRectangle *)ALLOCATE_LOCAL(REGION_NUM_RECTS(prgn) *
+ sizeof(xRectangle));
+ if (!prect)
+ return;
+
+ newValues[FUNCTION].val = GXcopy;
+ gcmask |= GCFunction | GCClipMask;
+
+ i = pScreen->myNum;
+ pRoot = WindowTable[i];
+
+ pBgWin = pWin;
+ if (what == PW_BORDER)
+ {
+ while (pBgWin->backgroundState == ParentRelative)
+ pBgWin = pBgWin->parent;
+ }
+
+ if ((pWin->drawable.depth != pRoot->drawable.depth) ||
+ (pWin->drawable.bitsPerPixel != pRoot->drawable.bitsPerPixel))
+ {
+ usingScratchGC = TRUE;
+ pGC = GetScratchGC(pWin->drawable.depth, pWin->drawable.pScreen);
+ if (!pGC)
+ {
+ DEALLOCATE_LOCAL(prect);
+ return;
+ }
+ /*
+ * mash the clip list so we can paint the border by
+ * mangling the window in place, pretending it
+ * spans the entire screen
+ */
+ if (what == PW_BORDER)
+ {
+ prgnWin = pWin->clipList;
+ oldCorner.x = pWin->drawable.x;
+ oldCorner.y = pWin->drawable.y;
+ pWin->drawable.x = pWin->drawable.y = 0;
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = pScreen->width;
+ box.y2 = pScreen->height;
+ REGION_INIT(pScreen, &pWin->clipList, &box, 1);
+ pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+ newValues[ABSX].val = pBgWin->drawable.x;
+ newValues[ABSY].val = pBgWin->drawable.y;
+ }
+ else
+ {
+ newValues[ABSX].val = 0;
+ newValues[ABSY].val = 0;
+ }
+ } else {
+ /*
+ * draw the background to the root window
+ */
+ if (screenContext[i] == (GCPtr)NULL)
+ {
+ if (!ResType && !(ResType = CreateNewResourceType(tossGC)))
+ return;
+ screenContext[i] = CreateGC((DrawablePtr)pWin, (BITS32) 0,
+ (XID *)NULL, &status);
+ if (!screenContext[i])
+ return;
+ numGCs++;
+ if (!AddResource(FakeClientID(0), ResType,
+ (pointer)screenContext[i]))
+ return;
+ }
+ pGC = screenContext[i];
+ newValues[SUBWINDOW].val = IncludeInferiors;
+ newValues[ABSX].val = pBgWin->drawable.x;
+ newValues[ABSY].val = pBgWin->drawable.y;
+ gcmask |= GCSubwindowMode;
+ pWin = pRoot;
+ }
+
+ if (pWin->backStorage)
+ (*pWin->drawable.pScreen->DrawGuarantee) (pWin, pGC, GuaranteeVisBack);
+
+ mask = gcmask;
+ gcmask = 0;
+ i = 0;
+ while (mask) {
+ index = lowbit (mask);
+ mask &= ~index;
+ switch (index) {
+ case GCFunction:
+ if (pGC->alu != newValues[FUNCTION].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[FUNCTION].val;
+ }
+ break;
+ case GCTileStipXOrigin:
+ if ( pGC->patOrg.x != newValues[ABSX].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[ABSX].val;
+ }
+ break;
+ case GCTileStipYOrigin:
+ if ( pGC->patOrg.y != newValues[ABSY].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[ABSY].val;
+ }
+ break;
+ case GCClipMask:
+ if ( pGC->clientClipType != CT_NONE) {
+ gcmask |= index;
+ gcval[i++].val = CT_NONE;
+ }
+ break;
+ case GCSubwindowMode:
+ if ( pGC->subWindowMode != newValues[SUBWINDOW].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[SUBWINDOW].val;
+ }
+ break;
+ case GCTile:
+ if (pGC->tileIsPixel || pGC->tile.pixmap != newValues[TILE].ptr)
+ {
+ gcmask |= index;
+ gcval[i++].ptr = newValues[TILE].ptr;
+ }
+ break;
+ case GCFillStyle:
+ if ( pGC->fillStyle != newValues[FILLSTYLE].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[FILLSTYLE].val;
+ }
+ break;
+ case GCForeground:
+ if ( pGC->fgPixel != newValues[FOREGROUND].val) {
+ gcmask |= index;
+ gcval[i++].val = newValues[FOREGROUND].val;
+ }
+ break;
+ }
+ }
+
+ if (gcmask)
+ dixChangeGC(NullClient, pGC, gcmask, NULL, gcval);
+
+ if (pWin->drawable.serialNumber != pGC->serialNumber)
+ ValidateGC((DrawablePtr)pWin, pGC);
+
+ numRects = REGION_NUM_RECTS(prgn);
+ pbox = REGION_RECTS(prgn);
+ for (i= numRects; --i >= 0; pbox++, prect++)
+ {
+ prect->x = pbox->x1 - pWin->drawable.x;
+ prect->y = pbox->y1 - pWin->drawable.y;
+ prect->width = pbox->x2 - pbox->x1;
+ prect->height = pbox->y2 - pbox->y1;
+ }
+ prect -= numRects;
+ (*pGC->ops->PolyFillRect)((DrawablePtr)pWin, pGC, numRects, prect);
+ DEALLOCATE_LOCAL(prect);
+
+ if (pWin->backStorage)
+ (*pWin->drawable.pScreen->DrawGuarantee) (pWin, pGC, GuaranteeNothing);
+
+ if (usingScratchGC)
+ {
+ if (what == PW_BORDER)
+ {
+ REGION_UNINIT(pScreen, &pWin->clipList);
+ pWin->clipList = prgnWin;
+ pWin->drawable.x = oldCorner.x;
+ pWin->drawable.y = oldCorner.y;
+ pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+ }
+ FreeScratchGC(pGC);
+ }
+}
+
+
+/* MICLEARDRAWABLE -- sets the entire drawable to the background color of
+ * the GC. Useful when we have a scratch drawable and need to initialize
+ * it. */
+miClearDrawable(pDraw, pGC)
+ DrawablePtr pDraw;
+ GCPtr pGC;
+{
+ XID fg = pGC->fgPixel;
+ XID bg = pGC->bgPixel;
+ xRectangle rect;
+
+ rect.x = 0;
+ rect.y = 0;
+ rect.width = pDraw->width;
+ rect.height = pDraw->height;
+ DoChangeGC(pGC, GCForeground, &bg, 0);
+ ValidateGC(pDraw, pGC);
+ (*pGC->ops->PolyFillRect)(pDraw, pGC, 1, &rect);
+ DoChangeGC(pGC, GCForeground, &fg, 0);
+ ValidateGC(pDraw, pGC);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 20:14:36 +0000