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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/xprint/ValTree.c
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Checked in the following released items:
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Diffstat (limited to 'xorg-server/hw/xprint/ValTree.c')
-rw-r--r--xorg-server/hw/xprint/ValTree.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/xorg-server/hw/xprint/ValTree.c b/xorg-server/hw/xprint/ValTree.c
new file mode 100644
index 000000000..5f58de7ec
--- /dev/null
+++ b/xorg-server/hw/xprint/ValTree.c
@@ -0,0 +1,191 @@
+/*
+(c) Copyright 1996 Hewlett-Packard Company
+(c) Copyright 1996 International Business Machines Corp.
+(c) Copyright 1996 Sun Microsystems, Inc.
+(c) Copyright 1996 Novell, Inc.
+(c) Copyright 1996 Digital Equipment Corp.
+(c) Copyright 1996 Fujitsu Limited
+(c) Copyright 1996 Hitachi, Ltd.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+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
+COPYRIGHT HOLDERS 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 names of the copyright holders shall
+not be used in advertising or otherwise to promote the sale, use or other
+dealings in this Software without prior written authorization from said
+copyright holders.
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "scrnintstr.h"
+#include "validate.h"
+#include "windowstr.h"
+#include "mi.h"
+#include "regionstr.h"
+#include "mivalidate.h"
+
+/*
+ * XpValidateTree - a validateTree routine which ignores overlapping
+ * top-level windows when computing the clip lists for such windows.
+ * This can be used by any driver which maintains a separate memory
+ * store for each top-level window (with its respective children).
+ * If the pParent is not the root window, then miValidateTree
+ * is used unmodified.
+ *
+ * The strategy if pParent is the root is to save off the
+ * current values of pParent->firstChild and pParent->lastChild,
+ * replacing both with the single child of interest. We save off
+ * pChild->prevSib and pChild->nextSib, and replace them with NullWindow.
+ * We save off pParent->clipList, and replace it with
+ * pParent->winSize - pChild->winSize. We then call miValidateTree
+ * to do the needed ComputeClips on the pChild's heirarchy.
+ * pParent's clipList is then recomputed based on the sizes
+ * of its children, and the saved pointers are restored.
+ * The trees associated with the siblings of pChild must be descended
+ * and cleaned of any marks (i.e. the valdata pointer freed, and set to NULL),
+ * and pParent' AfterValidate structure's exposed field must be updated.
+ */
+/*ARGSUSED*/
+int
+XpValidateTree (pParent, pChild, kind)
+ WindowPtr pParent; /* Parent to validate */
+ WindowPtr pChild; /* First child of pParent that was
+ * affected */
+ VTKind kind; /* What kind of configuration caused call */
+{
+ RegionRec origPrntClip; /* orig clipList for parent */
+ RegionRec childClip; /* The new borderClip for the current
+ * child */
+ RegionRec tmpPrntClip; /* parent clipList - child borderClip */
+ RegionRec exposed; /* For intermediate calculations */
+ register ScreenPtr pScreen;
+ register WindowPtr pWin;
+ Bool overlap;
+ int viewvals;
+ Bool forward;
+
+ WindowPtr origFirstChild, origLastChild, origPrevSib, origNextSib;
+
+ /*
+ * If we're validating something other than a top-level window,
+ * then just invoke miValidateTree.
+ */
+ if(pParent->parent != NullWindow)
+ return miValidateTree(pParent, pChild, kind);
+
+ /*
+ * If it's a stack change of top levels then it's a no-op for
+ * this scheme, so we just clean up any marks on windows and return.
+ */
+ if(kind == VTStack)
+ {
+ CleanMarks(pParent);
+ return 1;
+ }
+
+ pScreen = pParent->drawable.pScreen;
+ if (pChild == NullWindow)
+ pChild = pParent->firstChild;
+
+ /* Save off the existing window heirarchy */
+ origFirstChild = pParent->firstChild;
+ origLastChild = pParent->lastChild;
+ origPrevSib = pChild->prevSib;
+ origNextSib = pChild->nextSib;
+ pParent->firstChild = pChild;
+ pParent->lastChild = pChild;
+ pChild->prevSib = NullWindow;
+ pChild->nextSib = NullWindow;
+
+ /*
+ * Set pParent's clipList to be its winSize minus the pChild's
+ * borderSize.
+ */
+ origPrntClip = pParent->clipList;
+ REGION_NULL(pScreen, &tmpPrntClip);
+ REGION_SUBRACT(pScreen, &tmpPrntClip, &pParent->winSize,
+ &pChild->borderSize);
+ pParent->clipList = tmpPrntClip;
+
+ /*
+ * Call miValidateTree on the pruned tree.
+ */
+ (void) miValidateTree(pParent, pChild, kind);
+
+ /* Restore the saved heirarchy */
+ pChild->prevSib = origPrevSib;
+ pChild->nextSib = origNextSib;
+ pParent->firstChild = origFirstChild;
+ pParent->lastChild = origLastChild;
+
+ /*
+ * Compute pParent's clipList by taking its winSize and subracting
+ * the borderSize of each of its children.
+ */
+ for(pWin = pParent->firstChild,
+ REGION_COPY(pScreen, &pParent->clipList, &pParent->winSize);
+ pWin != NullWindow;
+ pWin = pWin->nextSib)
+ {
+ REGION_SUBTRACT(pScreen, &pParent->clipList, &pParent->clipList,
+ &pWin->borderSize);
+ }
+
+ /*
+ * Compute pParent's AfterValidate structure by subracting the original
+ * clipList from the newly computed clipList.
+ */
+ REGION_NULL(pScreen, &pParent->valdata->after.exposed);
+ REGION_SUBTRACT(pScreen, &pParent->valdata->after.exposed,
+ &pParent->clipList, &origPrntClip);
+
+ /*
+ * Remove the marks from all but pParent and pChild's heirarchy.
+ * i.e. from all of pChild's siblings and their children.
+ */
+ for(pWin = pParent->firstChild; pWin != NullWindow; pWin = pWin->nextSib)
+ {
+ WindowPtr pCurChild = pWin;
+
+ if(pCurChild == pChild)
+ continue;
+
+ while (1)
+ {
+ if(pCurChild->valdata)
+ {
+ xfree(pCurChild->valdata);
+ pCurChild->valdata = (ValidatePtr)NULL;
+ }
+
+ if (pCurChild->firstChild)
+ {
+ pCurChild = pCurChild->firstChild;
+ continue;
+ }
+ while (!pCurChild->nextSib && (pCurChild != pWin))
+ pCurChild = pCurChild->parent;
+ if (pCurChild == pWin)
+ break;
+ pCurChild = pCurChild->nextSib;
+ }
+ }
+}