Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 487 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/miext/layer/layerwin.c b/nx-X11/programs/Xserver/miext/layer/layerwin.c
new file mode 100644
index 000000000..7afe90ade
--- /dev/null
+++ b/nx-X11/programs/Xserver/miext/layer/layerwin.c
@@ -0,0 +1,487 @@
+/*
+ * $XFree86: xc/programs/Xserver/miext/layer/layerwin.c,v 1.7tsi Exp $
+ *
+ * Copyright © 2001 Keith Packard, member of The XFree86 Project, Inc.
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "layerstr.h"
+
+static LayerListPtr
+NewLayerList (ScreenPtr pScreen, LayerPtr pLayer)
+{
+    LayerListPtr    pLayList;
+
+    pLayList = (LayerListPtr) xalloc (sizeof (LayerListRec));
+    if (!pLayList)
+	return 0;
+    pLayList->pNext = 0;
+    pLayList->pLayer = pLayer;
+    pLayList->inheritClip = TRUE;
+    REGION_NULL (pScreen, &pLayList->clipList);
+    REGION_NULL (pScreen, &pLayList->borderClip);
+    return pLayList;
+}
+
+static void
+FreeLayerList (ScreenPtr pScreen, LayerListPtr pLayList)
+{
+    REGION_UNINIT (pScreen, &pLayList->clipList);
+    REGION_UNINIT (pScreen, &pLayList->borderClip);
+    xfree (pLayList);
+}
+
+/*
+ * Create pixmap for a layer
+ */
+
+Bool
+LayerCreatePixmap (ScreenPtr pScreen, LayerPtr pLayer)
+{
+    LayerKindPtr    pKind = pLayer->pKind;
+    
+    LayerUnwrap (pScreen, pKind, CreatePixmap);
+    /* XXX create full-screen sized layers all around */
+    pLayer->pPixmap = (*pScreen->CreatePixmap) (pScreen, pScreen->width, 
+						pScreen->height, pLayer->depth);
+    LayerWrap (pScreen, pKind, CreatePixmap, layerCreatePixmap);
+    if (!pLayer->pPixmap)
+	return FALSE;
+    if (pLayer->pKind->kind == LAYER_SHADOW)
+    {
+	if (!shadowAdd (pScreen, pLayer->pPixmap, pLayer->update, 
+			pLayer->window, pLayer->randr, 
+			pLayer->closure))
+	    return FALSE;
+    }
+    return TRUE;
+}
+
+/*
+ * Destroy pixmap for a layer
+ */
+
+void
+LayerDestroyPixmap (ScreenPtr pScreen, LayerPtr pLayer)
+{
+    if (pLayer->pPixmap)
+    {
+	if (pLayer->pKind->kind == LAYER_SHADOW)
+	    shadowRemove (pScreen, pLayer->pPixmap);
+	if (pLayer->freePixmap)
+	{
+	    LayerKindPtr    pKind = pLayer->pKind;
+
+	    LayerUnwrap (pScreen, pKind, DestroyPixmap);
+	    (*pScreen->DestroyPixmap) (pLayer->pPixmap);
+	    LayerWrap (pScreen, pKind, DestroyPixmap, layerDestroyPixmap);
+	}
+	pLayer->pPixmap = 0;
+    }
+}
+    
+/*
+ * Add a window to a layer
+ */
+Bool
+LayerWindowAdd (ScreenPtr pScreen, LayerPtr pLayer, WindowPtr pWin)
+{
+    layerWinPriv(pWin);
+
+    if (pLayer->pPixmap == LAYER_SCREEN_PIXMAP)
+	pLayer->pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
+    else if (!pLayer->pPixmap && !LayerCreatePixmap (pScreen, pLayer))
+	return FALSE;
+    /*
+     * Add a new layer list if needed
+     */
+    if (pLayWin->isList || pLayWin->u.pLayer)
+    {
+	LayerListPtr	pPrev;
+	LayerListPtr    pLayList;
+	
+	if (!pLayWin->isList)
+	{
+	    pPrev = NewLayerList (pScreen, pLayWin->u.pLayer);
+	    if (!pPrev)
+		return FALSE;
+	}
+	else
+	{
+	    for (pPrev = pLayWin->u.pLayList; pPrev->pNext; pPrev = pPrev->pNext)
+		;
+	}
+	pLayList = NewLayerList (pScreen, pLayer);
+	if (!pLayList)
+	{
+	    if (!pLayWin->isList)
+		FreeLayerList (pScreen, pPrev);
+	    return FALSE;
+	}
+	pPrev->pNext = pLayList;
+	if (!pLayWin->isList)
+	{
+	    pLayWin->isList = TRUE;
+	    pLayWin->u.pLayList = pPrev;
+	}
+    }
+    else
+	pLayWin->u.pLayer = pLayer;
+    /*
+     * XXX only one layer supported for drawing, last one wins
+     */
+    (*pScreen->SetWindowPixmap) (pWin, pLayer->pPixmap);
+    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+    pLayer->refcnt++;
+    pLayer->windows++;
+    return TRUE;
+}
+
+/*
+ * Remove a window from a layer
+ */
+
+void
+LayerWindowRemove (ScreenPtr pScreen, LayerPtr pLayer, WindowPtr pWin)
+{
+    layerWinPriv(pWin);
+
+    if (pLayWin->isList)
+    {
+	LayerListPtr	*pPrev;
+	LayerListPtr	pLayList;
+
+	for (pPrev = &pLayWin->u.pLayList; (pLayList = *pPrev); pPrev = &pLayList->pNext)
+	{
+	    if (pLayList->pLayer == pLayer)
+	    {
+		*pPrev = pLayList->pNext;
+		FreeLayerList (pScreen, pLayList);
+		--pLayer->windows;
+		if (pLayer->windows <= 0)
+		    LayerDestroyPixmap (pScreen, pLayer);
+		LayerDestroy (pScreen, pLayer);
+		break;
+	    }
+	}
+	pLayList = pLayWin->u.pLayList;
+	if (!pLayList)
+	{
+	    /*
+	     * List is empty, set isList back to false
+	     */
+	    pLayWin->isList = FALSE;
+	    pLayWin->u.pLayer = 0;
+	}
+	else if (!pLayList->pNext && pLayList->inheritClip)
+	{
+	    /*
+	     * List contains a single element using the
+	     * window clip, free the list structure and
+	     * host the layer back to the window private
+	     */
+	    pLayer = pLayList->pLayer;
+	    FreeLayerList (pScreen, pLayList);
+	    pLayWin->isList = FALSE;
+	    pLayWin->u.pLayer = pLayer;
+	}
+    }
+    else
+    {
+	if (pLayWin->u.pLayer == pLayer)
+	{
+	    --pLayer->windows;
+	    if (pLayer->windows <= 0)
+		LayerDestroyPixmap (pScreen, pLayer);
+	    LayerDestroy (pScreen, pLayer);
+	    pLayWin->u.pLayer = 0;
+	}
+    }
+    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+}
+
+/*
+ * Looping primitives for window layering.  Usage:
+ *
+ *  for (pLayer = LayerWindowFirst (pWin, &loop); 
+ *	 pLayer; 
+ *	 pLayer = LayerWindowNext (&loop))
+ *  {
+ *	...
+ *  }
+ *  LayerWindowDone (pWin, &loop);
+ */
+
+LayerPtr
+LayerWindowFirst (WindowPtr pWin, LayerWinLoopPtr pLoop)
+{
+    layerWinPriv (pWin);
+
+    pLoop->pLayWin = pLayWin;
+    if (!pLayWin->isList)
+	return pLayWin->u.pLayer;
+
+    /*
+     * Preserve original state
+     */
+    pLoop->clipList = pWin->clipList;
+    pLoop->borderClip = pWin->borderClip;
+    pLoop->pPixmap = (*pWin->drawable.pScreen->GetWindowPixmap) (pWin);
+
+    /*
+     * Set initial list element 
+     */
+    pLoop->pLayList = pLayWin->u.pLayList;
+
+    /*
+     * Return first layer
+     */
+    return LayerWindowNext (pWin, pLoop);
+}
+
+LayerPtr
+LayerWindowNext (WindowPtr pWin, LayerWinLoopPtr pLoop)
+{
+    LayerPtr	    pLayer;
+    LayerWinPtr	    pLayWin = pLoop->pLayWin;
+    LayerListPtr    pLayList;
+
+    if (!pLayWin->isList)
+	return 0;
+    
+    pLayList = pLoop->pLayList;
+    pLayer = pLayList->pLayer;
+    /*
+     * Configure window for this layer
+     */
+    (*pWin->drawable.pScreen->SetWindowPixmap) (pWin, pLayer->pPixmap);
+    if (!pLayList->inheritClip)
+    {
+	pWin->clipList = pLayList->clipList;
+	pWin->borderClip = pLayList->borderClip;
+    }
+    /*
+     * Step to next layer list
+     */
+    pLoop->pLayList = pLayList->pNext;
+    /*
+     * Return layer
+     */
+    return pLayer;
+}
+
+void
+LayerWindowDone (WindowPtr pWin, LayerWinLoopPtr pLoop)
+{
+    LayerWinPtr	pLayWin = pLoop->pLayWin;
+
+    if (!pLayWin->isList)
+	return;
+    /*
+     * clean up after the loop
+     */
+    pWin->clipList = pLoop->clipList;
+    pWin->borderClip = pLoop->clipList;
+    (*pWin->drawable.pScreen->SetWindowPixmap) (pWin, pLoop->pPixmap);
+}
+
+Bool
+layerCreateWindow (WindowPtr pWin)
+{
+    ScreenPtr	pScreen = pWin->drawable.pScreen;
+    layerWinPriv(pWin);
+    layerScrPriv(pScreen);
+    LayerPtr	pLayer;
+    Bool	ret;
+
+    pLayWin->isList = FALSE;
+    pLayWin->u.pLayer = 0;
+    
+    /*
+     * input only windows don't live in any layer
+     */
+    if (pWin->drawable.type == UNDRAWABLE_WINDOW)
+	return TRUE;
+    /*
+     * Use a reasonable default layer -- the first
+     * layer matching the windows depth.  Subsystems needing
+     * alternative layering semantics can override this by
+     * replacing this function.  Perhaps a new screen function
+     * could be used to select the correct initial window
+     * layer instead.
+     */
+    for (pLayer = pLayScr->pLayers; pLayer; pLayer = pLayer->pNext)
+	if (pLayer->depth == pWin->drawable.depth)
+	    break;
+    ret = TRUE;
+    if (pLayer)
+    {
+	pScreen->CreateWindow = pLayer->pKind->CreateWindow;
+	ret = (*pScreen->CreateWindow) (pWin);
+	pLayer->pKind->CreateWindow = pScreen->CreateWindow;
+	pScreen->CreateWindow = layerCreateWindow;
+	LayerWindowAdd (pScreen, pLayer, pWin);
+    }
+    return ret;
+}
+
+Bool
+layerDestroyWindow (WindowPtr pWin)
+{
+    ScreenPtr	pScreen = pWin->drawable.pScreen;
+    layerWinPriv(pWin);
+    LayerPtr	pLayer;
+    Bool	ret = TRUE;
+
+    while ((pLayer = layerWinLayer (pLayWin)))
+    {
+	LayerUnwrap (pScreen, pLayer->pKind, DestroyWindow);
+	ret = (*pScreen->DestroyWindow) (pWin);
+	LayerWrap (pScreen, pLayer->pKind, DestroyWindow, layerDestroyWindow);
+	LayerWindowRemove (pWin->drawable.pScreen, pLayer, pWin);
+    }
+    return ret;
+}
+
+Bool
+layerChangeWindowAttributes (WindowPtr pWin, unsigned long mask)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    LayerPtr	    pLay;
+    LayerWinLoopRec loop;
+    Bool	    ret = TRUE;
+
+    for (pLay = LayerWindowFirst (pWin, &loop);
+	 pLay;
+	 pLay = LayerWindowNext (pWin, &loop))
+    {
+	LayerUnwrap(pScreen,pLay->pKind,ChangeWindowAttributes);
+	if (!(*pScreen->ChangeWindowAttributes) (pWin, mask))
+	    ret = FALSE;
+	LayerWrap(pScreen,pLay->pKind,ChangeWindowAttributes,layerChangeWindowAttributes);
+    }
+    LayerWindowDone (pWin, &loop);
+    return ret;
+}
+
+void
+layerPaintWindowBackground (WindowPtr pWin, RegionPtr pRegion, int what)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    LayerPtr	    pLay;
+    LayerWinLoopRec loop;
+
+    for (pLay = LayerWindowFirst (pWin, &loop);
+	 pLay;
+	 pLay = LayerWindowNext (pWin, &loop))
+    {
+	LayerUnwrap(pScreen,pLay->pKind,PaintWindowBackground);
+	(*pScreen->PaintWindowBackground) (pWin, pRegion, what);
+	LayerWrap(pScreen,pLay->pKind,PaintWindowBackground,layerPaintWindowBackground);
+    }
+    LayerWindowDone (pWin, &loop);
+}
+
+void
+layerPaintWindowBorder (WindowPtr pWin, RegionPtr pRegion, int what)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    LayerPtr	    pLay;
+    LayerWinLoopRec loop;
+
+    for (pLay = LayerWindowFirst (pWin, &loop);
+	 pLay;
+	 pLay = LayerWindowNext (pWin, &loop))
+    {
+	LayerUnwrap(pScreen,pLay->pKind,PaintWindowBorder);
+	(*pScreen->PaintWindowBorder) (pWin, pRegion, what);
+	LayerWrap(pScreen,pLay->pKind,PaintWindowBorder,layerPaintWindowBorder);
+    }
+    LayerWindowDone (pWin, &loop);
+}
+
+void
+layerCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    LayerPtr	    pLay;
+    LayerWinLoopRec loop;
+    int		    dx = 0, dy = 0;
+
+    for (pLay = LayerWindowFirst (pWin, &loop);
+	 pLay;
+	 pLay = LayerWindowNext (pWin, &loop))
+    {
+	LayerUnwrap(pScreen,pLay->pKind,CopyWindow);
+	/*
+	 * Undo the translation done within the last CopyWindow proc (sigh)
+	 */
+	if (dx || dy)
+	    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, dx, dy);
+	(*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);
+	LayerWrap(pScreen,pLay->pKind,CopyWindow,layerCopyWindow);
+	/*
+	 * Save offset to undo translation next time around
+	 */
+	dx = ptOldOrg.x - pWin->drawable.x;
+	dy = ptOldOrg.y - pWin->drawable.y;
+    }
+    LayerWindowDone (pWin, &loop);
+}
+
+PixmapPtr
+layerCreatePixmap (ScreenPtr pScreen, int width, int height, int depth)
+{
+    /* XXX assume the first layer can handle all pixmaps */
+    layerScrPriv (pScreen);
+    LayerKindPtr    pKind;
+    PixmapPtr	    pPixmap;
+    
+    pKind = &pLayScr->kinds[0];
+    if (pLayScr->pLayers)
+	pKind = pLayScr->pLayers->pKind;
+    LayerUnwrap (pScreen, pKind, CreatePixmap);
+    pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, depth);
+    LayerWrap (pScreen,pKind,CreatePixmap,layerCreatePixmap);
+    return pPixmap;
+}
+
+Bool
+layerDestroyPixmap (PixmapPtr pPixmap)
+{
+    /* XXX assume the first layer can handle all pixmaps */
+    ScreenPtr	    pScreen = pPixmap->drawable.pScreen;
+    layerScrPriv (pScreen);
+    LayerKindPtr    pKind;
+    Bool	    ret;
+    
+    pKind = &pLayScr->kinds[0];
+    if (pLayScr->pLayers)
+	pKind = pLayScr->pLayers->pKind;
+    LayerUnwrap (pScreen, pKind, DestroyPixmap);
+    ret = (*pScreen->DestroyPixmap) (pPixmap);
+    LayerWrap (pScreen,pKind,DestroyPixmap,layerDestroyPixmap);
+    return ret;
+}
+