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+/*
+ * mibstorest.h
+ *
+ * internal structure definitions for mi backing store
+ */
+
+/* $Xorg: mibstorest.h,v 1.4 2001/02/09 02:05:20 xorgcvs Exp $ */
+
+/*
+
+Copyright 1989, 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.
+*/
+
+#include "mibstore.h"
+#include "regionstr.h"
+
+/*
+ * One of these structures is allocated per GC used with a backing-store
+ * drawable.
+ */
+
+typedef struct {
+ GCPtr pBackingGC; /* Copy of the GC but with graphicsExposures
+ * set FALSE and the clientClip set to
+ * clip output to the valid regions of the
+ * backing pixmap. */
+ int guarantee; /* GuaranteeNothing, etc. */
+ unsigned long serialNumber; /* clientClip computed time */
+ unsigned long stateChanges; /* changes in parent gc since last copy */
+ GCOps *wrapOps; /* wrapped ops */
+ GCFuncs *wrapFuncs; /* wrapped funcs */
+} miBSGCRec, *miBSGCPtr;
+
+/*
+ * one of these structures is allocated per Window with backing store
+ */
+
+typedef struct {
+ PixmapPtr pBackingPixmap; /* Pixmap for saved areas */
+ short x; /* origin of pixmap relative to window */
+ short y;
+ RegionRec SavedRegion; /* Valid area in pBackingPixmap */
+ char viewable; /* Tracks pWin->viewable so SavedRegion may
+ * be initialized correctly when the window
+ * is first mapped */
+ char status; /* StatusNoPixmap, etc. */
+ char backgroundState; /* background type */
+ PixUnion background; /* background pattern */
+} miBSWindowRec, *miBSWindowPtr;
+
+#define StatusNoPixmap 1 /* pixmap has not been created */
+#define StatusVirtual 2 /* pixmap is virtual, tiled with background */
+#define StatusVDirty 3 /* pixmap is virtual, visiblt has contents */
+#define StatusBadAlloc 4 /* pixmap create failed, do not try again */
+#define StatusContents 5 /* pixmap is created, has valid contents */
+
+typedef struct {
+ /*
+ * screen func wrappers
+ */
+ CloseScreenProcPtr CloseScreen;
+ GetImageProcPtr GetImage;
+ GetSpansProcPtr GetSpans;
+ ChangeWindowAttributesProcPtr ChangeWindowAttributes;
+ CreateGCProcPtr CreateGC;
+ DestroyWindowProcPtr DestroyWindow;
+ /*
+ * pointer to vector of device-specific backing store functions
+ */
+ miBSFuncPtr funcs;
+} miBSScreenRec, *miBSScreenPtr;