Importing xserver from X.Org 7.2RC2

1 files changed, 344 insertions, 0 deletions

diff --git a/xserver/mi/miscrinit.c b/xserver/mi/miscrinit.c
new file mode 100644
index 000000000..ac1b82336
--- /dev/null
+++ b/xserver/mi/miscrinit.c
@@ -0,0 +1,344 @@
+/*
+
+Copyright 1990, 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.
+
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "servermd.h"
+#include "misc.h"
+#include "mi.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "dix.h"
+#include "miline.h"
+#ifdef MITSHM
+#define _XSHM_SERVER_
+#include <X11/extensions/XShm.h>
+#endif
+
+/* We use this structure to propogate some information from miScreenInit to
+ * miCreateScreenResources.  miScreenInit allocates the structure, fills it
+ * in, and puts it into pScreen->devPrivate.  miCreateScreenResources 
+ * extracts the info and frees the structure.  We could've accomplished the
+ * same thing by adding fields to the screen structure, but they would have
+ * ended up being redundant, and would have exposed this mi implementation
+ * detail to the whole server.
+ */
+
+typedef struct
+{
+    pointer pbits; /* pointer to framebuffer */
+    int width;    /* delta to add to a framebuffer addr to move one row down */
+} miScreenInitParmsRec, *miScreenInitParmsPtr;
+
+
+/* this plugs into pScreen->ModifyPixmapHeader */
+_X_EXPORT Bool
+miModifyPixmapHeader(pPixmap, width, height, depth, bitsPerPixel, devKind,
+		     pPixData)
+    PixmapPtr   pPixmap;
+    int		width;
+    int		height;
+    int		depth;
+    int		bitsPerPixel;
+    int		devKind;
+    pointer     pPixData;
+{
+    if (!pPixmap)
+	return FALSE;
+
+    /*
+     * If all arguments are specified, reinitialize everything (including
+     * validated state).
+     */
+    if ((width > 0) && (height > 0) && (depth > 0) && (bitsPerPixel > 0) &&
+	(devKind > 0) && pPixData) {
+	pPixmap->drawable.depth = depth;
+	pPixmap->drawable.bitsPerPixel = bitsPerPixel;
+	pPixmap->drawable.id = 0;
+	pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+	pPixmap->drawable.x = 0;
+	pPixmap->drawable.y = 0;
+	pPixmap->drawable.width = width;
+	pPixmap->drawable.height = height;
+	pPixmap->devKind = devKind;
+	pPixmap->refcnt = 1;
+	pPixmap->devPrivate.ptr = pPixData;
+    } else {
+	/*
+	 * Only modify specified fields, keeping all others intact.
+	 */
+
+	if (width > 0)
+	    pPixmap->drawable.width = width;
+
+	if (height > 0)
+	    pPixmap->drawable.height = height;
+
+	if (depth > 0)
+	    pPixmap->drawable.depth = depth;
+
+	if (bitsPerPixel > 0)
+	    pPixmap->drawable.bitsPerPixel = bitsPerPixel;
+	else if ((bitsPerPixel < 0) && (depth > 0))
+	    pPixmap->drawable.bitsPerPixel = BitsPerPixel(depth);
+
+	/*
+	 * CAVEAT:  Non-SI DDXen may use devKind and devPrivate fields for
+	 *          other purposes.
+	 */
+	if (devKind > 0)
+	    pPixmap->devKind = devKind;
+	else if ((devKind < 0) && ((width > 0) || (depth > 0)))
+	    pPixmap->devKind = PixmapBytePad(pPixmap->drawable.width,
+		pPixmap->drawable.depth);
+
+	if (pPixData)
+	    pPixmap->devPrivate.ptr = pPixData;
+    }
+    return TRUE;
+}
+
+
+/*ARGSUSED*/
+Bool
+miCloseScreen (iScreen, pScreen)
+    int		iScreen;
+    ScreenPtr	pScreen;
+{
+    return ((*pScreen->DestroyPixmap)((PixmapPtr)pScreen->devPrivate));
+}
+
+/* With the introduction of pixmap privates, the "screen pixmap" can no
+ * longer be created in miScreenInit, since all the modules that could
+ * possibly ask for pixmap private space have not been initialized at
+ * that time.  pScreen->CreateScreenResources is called after all
+ * possible private-requesting modules have been inited; we create the
+ * screen pixmap here.
+ */
+_X_EXPORT Bool
+miCreateScreenResources(pScreen)
+    ScreenPtr pScreen;
+{
+    miScreenInitParmsPtr pScrInitParms;
+    pointer value;
+
+    pScrInitParms = (miScreenInitParmsPtr)pScreen->devPrivate;
+
+    /* if width is non-zero, pScreen->devPrivate will be a pixmap
+     * else it will just take the value pbits
+     */
+    if (pScrInitParms->width)
+    {
+	PixmapPtr pPixmap;
+
+	/* create a pixmap with no data, then redirect it to point to
+	 * the screen
+	 */
+	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, pScreen->rootDepth);
+	if (!pPixmap)
+	    return FALSE;
+
+	if (!(*pScreen->ModifyPixmapHeader)(pPixmap, pScreen->width,
+		    pScreen->height, pScreen->rootDepth,
+		    BitsPerPixel(pScreen->rootDepth),
+		    PixmapBytePad(pScrInitParms->width, pScreen->rootDepth),
+		    pScrInitParms->pbits))
+	    return FALSE;
+	value = (pointer)pPixmap;
+    }
+    else
+    {
+	value = pScrInitParms->pbits;
+    }
+    xfree(pScreen->devPrivate); /* freeing miScreenInitParmsRec */
+    pScreen->devPrivate = value; /* pPixmap or pbits */
+    return TRUE;
+}
+
+Bool
+miScreenDevPrivateInit(pScreen, width, pbits)
+    register ScreenPtr pScreen;
+    int width;
+    pointer pbits;
+{
+    miScreenInitParmsPtr pScrInitParms;
+
+    /* Stash pbits and width in a short-lived miScreenInitParmsRec attached
+     * to the screen, until CreateScreenResources can put them in the
+     * screen pixmap.
+     */
+    pScrInitParms = (miScreenInitParmsPtr)xalloc(sizeof(miScreenInitParmsRec));
+    if (!pScrInitParms)
+	return FALSE;
+    pScrInitParms->pbits = pbits;
+    pScrInitParms->width = width;
+    pScreen->devPrivate = (pointer)pScrInitParms;
+    return TRUE;
+}
+
+_X_EXPORT Bool
+miScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width,
+	     rootDepth, numDepths, depths, rootVisual, numVisuals, visuals)
+    register ScreenPtr pScreen;
+    pointer pbits;		/* pointer to screen bits */
+    int xsize, ysize;		/* in pixels */
+    int dpix, dpiy;		/* dots per inch */
+    int width;			/* pixel width of frame buffer */
+    int rootDepth;		/* depth of root window */
+    int numDepths;		/* number of depths supported */
+    DepthRec *depths;		/* supported depths */
+    VisualID rootVisual;	/* root visual */
+    int numVisuals;		/* number of visuals supported */
+    VisualRec *visuals;		/* supported visuals */
+{
+    pScreen->width = xsize;
+    pScreen->height = ysize;
+    pScreen->mmWidth = (xsize * 254 + dpix * 5) / (dpix * 10);
+    pScreen->mmHeight = (ysize * 254 + dpiy * 5) / (dpiy * 10);
+    pScreen->numDepths = numDepths;
+    pScreen->rootDepth = rootDepth;
+    pScreen->allowedDepths = depths;
+    pScreen->rootVisual = rootVisual;
+    /* defColormap */
+    pScreen->minInstalledCmaps = 1;
+    pScreen->maxInstalledCmaps = 1;
+    pScreen->backingStoreSupport = NotUseful;
+    pScreen->saveUnderSupport = NotUseful;
+    /* whitePixel, blackPixel */
+    pScreen->ModifyPixmapHeader = miModifyPixmapHeader;
+    pScreen->CreateScreenResources = miCreateScreenResources;
+    pScreen->GetScreenPixmap = miGetScreenPixmap;
+    pScreen->SetScreenPixmap = miSetScreenPixmap;
+    pScreen->numVisuals = numVisuals;
+    pScreen->visuals = visuals;
+    if (width)
+    {
+#ifdef MITSHM
+	ShmRegisterFbFuncs(pScreen);
+#endif
+	pScreen->CloseScreen = miCloseScreen;
+    }
+    /* else CloseScreen */
+    /* QueryBestSize, SaveScreen, GetImage, GetSpans */
+    pScreen->PointerNonInterestBox = (PointerNonInterestBoxProcPtr) 0;
+    pScreen->SourceValidate = (SourceValidateProcPtr) 0;
+    /* CreateWindow, DestroyWindow, PositionWindow, ChangeWindowAttributes */
+    /* RealizeWindow, UnrealizeWindow */
+    pScreen->ValidateTree = miValidateTree;
+    pScreen->PostValidateTree = (PostValidateTreeProcPtr) 0;
+    pScreen->WindowExposures = miWindowExposures;
+    /* PaintWindowBackground, PaintWindowBorder, CopyWindow */
+    pScreen->ClearToBackground = miClearToBackground;
+    pScreen->ClipNotify = (ClipNotifyProcPtr) 0;
+    pScreen->RestackWindow = (RestackWindowProcPtr) 0;
+    /* CreatePixmap, DestroyPixmap */
+    /* RealizeFont, UnrealizeFont */
+    /* CreateGC */
+    /* CreateColormap, DestroyColormap, InstallColormap, UninstallColormap */
+    /* ListInstalledColormaps, StoreColors, ResolveColor */
+    /* BitmapToRegion */
+    pScreen->SendGraphicsExpose = miSendGraphicsExpose;
+    pScreen->BlockHandler = (ScreenBlockHandlerProcPtr)NoopDDA;
+    pScreen->WakeupHandler = (ScreenWakeupHandlerProcPtr)NoopDDA;
+    pScreen->blockData = (pointer)0;
+    pScreen->wakeupData = (pointer)0;
+    pScreen->MarkWindow = miMarkWindow;
+    pScreen->MarkOverlappedWindows = miMarkOverlappedWindows;
+    pScreen->ChangeSaveUnder = miChangeSaveUnder;
+    pScreen->PostChangeSaveUnder = miPostChangeSaveUnder;
+    pScreen->MoveWindow = miMoveWindow;
+    pScreen->ResizeWindow = miSlideAndSizeWindow;
+    pScreen->GetLayerWindow = miGetLayerWindow;
+    pScreen->HandleExposures = miHandleValidateExposures;
+    pScreen->ReparentWindow = (ReparentWindowProcPtr) 0;
+    pScreen->ChangeBorderWidth = miChangeBorderWidth;
+#ifdef SHAPE
+    pScreen->SetShape = miSetShape;
+#endif
+    pScreen->MarkUnrealizedWindow = miMarkUnrealizedWindow;
+
+    pScreen->SaveDoomedAreas = 0;
+    pScreen->RestoreAreas = 0;
+    pScreen->ExposeCopy = 0;
+    pScreen->TranslateBackingStore = 0;
+    pScreen->ClearBackingStore = 0;
+    pScreen->DrawGuarantee = 0;
+
+    miSetZeroLineBias(pScreen, DEFAULTZEROLINEBIAS);
+
+    return miScreenDevPrivateInit(pScreen, width, pbits);
+}
+
+_X_EXPORT int
+miAllocateGCPrivateIndex()
+{
+    static int privateIndex = -1;
+    static unsigned long miGeneration = 0;
+
+    if (miGeneration != serverGeneration)
+    {
+	privateIndex = AllocateGCPrivateIndex();
+	miGeneration = serverGeneration;
+    }
+    return privateIndex;
+}
+
+_X_EXPORT int miZeroLineScreenIndex;
+unsigned int miZeroLineGeneration = 0;
+
+_X_EXPORT void
+miSetZeroLineBias(pScreen, bias)
+    ScreenPtr pScreen;
+    unsigned int bias;
+{
+    if (miZeroLineGeneration != serverGeneration)
+    {
+	miZeroLineScreenIndex = AllocateScreenPrivateIndex();
+	miZeroLineGeneration = serverGeneration;
+    }
+    if (miZeroLineScreenIndex >= 0)
+	pScreen->devPrivates[miZeroLineScreenIndex].uval = bias;
+}
+
+_X_EXPORT PixmapPtr
+miGetScreenPixmap(pScreen)
+    ScreenPtr pScreen;
+{
+    return (PixmapPtr)(pScreen->devPrivate);
+}
+
+_X_EXPORT void
+miSetScreenPixmap(pPix)
+    PixmapPtr pPix;
+{
+    if (pPix)
+	pPix->drawable.pScreen->devPrivate = (pointer)pPix;
+}