468 lines
15 KiB
C
468 lines
15 KiB
C
/*
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* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Copyright © 2003 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "compint.h"
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#include "compositeext.h"
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DevPrivateKeyRec CompScreenPrivateKeyRec;
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DevPrivateKeyRec CompWindowPrivateKeyRec;
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DevPrivateKeyRec CompSubwindowsPrivateKeyRec;
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static Bool
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compCloseScreen(ScreenPtr pScreen)
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{
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CompScreenPtr cs = GetCompScreen(pScreen);
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Bool ret;
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free(cs->alternateVisuals);
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pScreen->CloseScreen = cs->CloseScreen;
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pScreen->InstallColormap = cs->InstallColormap;
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pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
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pScreen->ReparentWindow = cs->ReparentWindow;
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pScreen->ConfigNotify = cs->ConfigNotify;
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pScreen->MoveWindow = cs->MoveWindow;
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pScreen->ResizeWindow = cs->ResizeWindow;
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pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
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pScreen->ClipNotify = cs->ClipNotify;
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pScreen->UnrealizeWindow = cs->UnrealizeWindow;
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pScreen->RealizeWindow = cs->RealizeWindow;
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pScreen->DestroyWindow = cs->DestroyWindow;
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pScreen->CreateWindow = cs->CreateWindow;
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pScreen->CopyWindow = cs->CopyWindow;
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pScreen->PositionWindow = cs->PositionWindow;
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pScreen->GetImage = cs->GetImage;
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pScreen->GetSpans = cs->GetSpans;
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pScreen->SourceValidate = cs->SourceValidate;
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free(cs);
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dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, NULL);
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ret = (*pScreen->CloseScreen) (pScreen);
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return ret;
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}
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static void
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compInstallColormap(ColormapPtr pColormap)
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{
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VisualPtr pVisual = pColormap->pVisual;
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ScreenPtr pScreen = pColormap->pScreen;
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CompScreenPtr cs = GetCompScreen(pScreen);
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int a;
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for (a = 0; a < cs->numAlternateVisuals; a++)
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if (pVisual->vid == cs->alternateVisuals[a])
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return;
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pScreen->InstallColormap = cs->InstallColormap;
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(*pScreen->InstallColormap) (pColormap);
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cs->InstallColormap = pScreen->InstallColormap;
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pScreen->InstallColormap = compInstallColormap;
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}
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static void
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compCheckBackingStore(WindowPtr pWin)
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{
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if (pWin->backingStore != NotUseful && !pWin->backStorage) {
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compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic);
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pWin->backStorage = TRUE;
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}
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else if (pWin->backingStore == NotUseful && pWin->backStorage) {
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compUnredirectWindow(serverClient, pWin,
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CompositeRedirectAutomatic);
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pWin->backStorage = FALSE;
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}
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}
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/* Fake backing store via automatic redirection */
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static Bool
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compChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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CompScreenPtr cs = GetCompScreen(pScreen);
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Bool ret;
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pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
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ret = pScreen->ChangeWindowAttributes(pWin, mask);
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if (ret && (mask & CWBackingStore) &&
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pScreen->backingStoreSupport != NotUseful)
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compCheckBackingStore(pWin);
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pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
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return ret;
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}
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static void
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compGetImage(DrawablePtr pDrawable,
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int sx, int sy,
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int w, int h,
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unsigned int format, unsigned long planemask, char *pdstLine)
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{
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ScreenPtr pScreen = pDrawable->pScreen;
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CompScreenPtr cs = GetCompScreen(pScreen);
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pScreen->GetImage = cs->GetImage;
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if (pDrawable->type == DRAWABLE_WINDOW)
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compPaintChildrenToWindow((WindowPtr) pDrawable);
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(*pScreen->GetImage) (pDrawable, sx, sy, w, h, format, planemask, pdstLine);
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cs->GetImage = pScreen->GetImage;
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pScreen->GetImage = compGetImage;
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}
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static void
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compGetSpans(DrawablePtr pDrawable, int wMax, DDXPointPtr ppt, int *pwidth,
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int nspans, char *pdstStart)
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{
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ScreenPtr pScreen = pDrawable->pScreen;
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CompScreenPtr cs = GetCompScreen(pScreen);
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pScreen->GetSpans = cs->GetSpans;
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if (pDrawable->type == DRAWABLE_WINDOW)
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compPaintChildrenToWindow((WindowPtr) pDrawable);
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(*pScreen->GetSpans) (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);
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cs->GetSpans = pScreen->GetSpans;
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pScreen->GetSpans = compGetSpans;
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}
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static void
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compSourceValidate(DrawablePtr pDrawable,
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int x, int y,
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int width, int height, unsigned int subWindowMode)
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{
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ScreenPtr pScreen = pDrawable->pScreen;
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CompScreenPtr cs = GetCompScreen(pScreen);
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pScreen->SourceValidate = cs->SourceValidate;
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if (pDrawable->type == DRAWABLE_WINDOW && subWindowMode == IncludeInferiors)
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compPaintChildrenToWindow((WindowPtr) pDrawable);
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if (pScreen->SourceValidate)
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(*pScreen->SourceValidate) (pDrawable, x, y, width, height,
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subWindowMode);
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cs->SourceValidate = pScreen->SourceValidate;
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pScreen->SourceValidate = compSourceValidate;
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}
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/*
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* Add alternate visuals -- always expose an ARGB32 and RGB24 visual
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*/
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static DepthPtr
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compFindVisuallessDepth(ScreenPtr pScreen, int d)
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{
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int i;
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for (i = 0; i < pScreen->numDepths; i++) {
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DepthPtr depth = &pScreen->allowedDepths[i];
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if (depth->depth == d) {
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/*
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* Make sure it doesn't have visuals already
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*/
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if (depth->numVids)
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return 0;
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/*
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* looks fine
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*/
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return depth;
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}
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}
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/*
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* If there isn't one, then it's gonna be hard to have
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* an associated visual
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*/
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return 0;
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}
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/*
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* Add a list of visual IDs to the list of visuals to implicitly redirect.
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*/
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static Bool
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compRegisterAlternateVisuals(CompScreenPtr cs, VisualID * vids, int nVisuals)
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{
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VisualID *p;
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p = reallocarray(cs->alternateVisuals,
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cs->numAlternateVisuals + nVisuals, sizeof(VisualID));
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if (p == NULL)
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return FALSE;
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memcpy(&p[cs->numAlternateVisuals], vids, sizeof(VisualID) * nVisuals);
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cs->alternateVisuals = p;
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cs->numAlternateVisuals += nVisuals;
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return TRUE;
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}
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Bool
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CompositeRegisterAlternateVisuals(ScreenPtr pScreen, VisualID * vids,
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int nVisuals)
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{
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CompScreenPtr cs = GetCompScreen(pScreen);
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return compRegisterAlternateVisuals(cs, vids, nVisuals);
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}
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Bool
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CompositeRegisterImplicitRedirectionException(ScreenPtr pScreen,
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VisualID parentVisual,
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VisualID winVisual)
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{
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CompScreenPtr cs = GetCompScreen(pScreen);
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CompImplicitRedirectException *p;
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p = reallocarray(cs->implicitRedirectExceptions,
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cs->numImplicitRedirectExceptions + 1, sizeof(p[0]));
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if (p == NULL)
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return FALSE;
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p[cs->numImplicitRedirectExceptions].parentVisual = parentVisual;
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p[cs->numImplicitRedirectExceptions].winVisual = winVisual;
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cs->implicitRedirectExceptions = p;
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cs->numImplicitRedirectExceptions++;
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return TRUE;
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}
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typedef struct _alternateVisual {
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int depth;
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CARD32 format;
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} CompAlternateVisual;
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static CompAlternateVisual altVisuals[] = {
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#if COMP_INCLUDE_RGB24_VISUAL
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{24, PICT_r8g8b8},
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#endif
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{32, PICT_a8r8g8b8},
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};
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static const int NUM_COMP_ALTERNATE_VISUALS = sizeof(altVisuals) /
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sizeof(CompAlternateVisual);
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static Bool
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compAddAlternateVisual(ScreenPtr pScreen, CompScreenPtr cs,
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CompAlternateVisual * alt)
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{
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VisualPtr visual;
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DepthPtr depth;
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PictFormatPtr pPictFormat;
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unsigned long alphaMask;
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/*
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* The ARGB32 visual is always available. Other alternate depth visuals
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* are only provided if their depth is less than the root window depth.
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* There's no deep reason for this.
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*/
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if (alt->depth >= pScreen->rootDepth && alt->depth != 32)
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return FALSE;
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depth = compFindVisuallessDepth(pScreen, alt->depth);
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if (!depth)
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/* alt->depth doesn't exist or already has alternate visuals. */
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return TRUE;
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pPictFormat = PictureMatchFormat(pScreen, alt->depth, alt->format);
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if (!pPictFormat)
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return FALSE;
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if (ResizeVisualArray(pScreen, 1, depth) == FALSE) {
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return FALSE;
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}
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visual = pScreen->visuals + (pScreen->numVisuals - 1); /* the new one */
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/* Initialize the visual */
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visual->bitsPerRGBValue = 8;
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if (PICT_FORMAT_TYPE(alt->format) == PICT_TYPE_COLOR) {
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visual->class = PseudoColor;
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visual->nplanes = PICT_FORMAT_BPP(alt->format);
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visual->ColormapEntries = 1 << visual->nplanes;
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}
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else {
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DirectFormatRec *direct = &pPictFormat->direct;
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visual->class = TrueColor;
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visual->redMask = ((unsigned long) direct->redMask) << direct->red;
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visual->greenMask =
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((unsigned long) direct->greenMask) << direct->green;
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visual->blueMask = ((unsigned long) direct->blueMask) << direct->blue;
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alphaMask = ((unsigned long) direct->alphaMask) << direct->alpha;
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visual->offsetRed = direct->red;
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visual->offsetGreen = direct->green;
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visual->offsetBlue = direct->blue;
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/*
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* Include A bits in this (unlike GLX which includes only RGB)
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* This lets DIX compute suitable masks for colormap allocations
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*/
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visual->nplanes = Ones(visual->redMask |
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visual->greenMask |
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visual->blueMask | alphaMask);
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/* find widest component */
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visual->ColormapEntries = (1 << max(Ones(visual->redMask),
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max(Ones(visual->greenMask),
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Ones(visual->blueMask))));
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}
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/* remember the visual ID to detect auto-update windows */
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compRegisterAlternateVisuals(cs, &visual->vid, 1);
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return TRUE;
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}
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static Bool
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compAddAlternateVisuals(ScreenPtr pScreen, CompScreenPtr cs)
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{
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int alt, ret = 0;
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for (alt = 0; alt < NUM_COMP_ALTERNATE_VISUALS; alt++)
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ret |= compAddAlternateVisual(pScreen, cs, altVisuals + alt);
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return ! !ret;
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}
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Bool
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compScreenInit(ScreenPtr pScreen)
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{
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CompScreenPtr cs;
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if (!dixRegisterPrivateKey(&CompScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
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return FALSE;
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if (!dixRegisterPrivateKey(&CompWindowPrivateKeyRec, PRIVATE_WINDOW, 0))
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return FALSE;
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if (!dixRegisterPrivateKey(&CompSubwindowsPrivateKeyRec, PRIVATE_WINDOW, 0))
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return FALSE;
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if (GetCompScreen(pScreen))
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return TRUE;
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cs = (CompScreenPtr) malloc(sizeof(CompScreenRec));
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if (!cs)
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return FALSE;
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cs->overlayWid = FakeClientID(0);
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cs->pOverlayWin = NULL;
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cs->pOverlayClients = NULL;
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cs->numAlternateVisuals = 0;
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cs->alternateVisuals = NULL;
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cs->numImplicitRedirectExceptions = 0;
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cs->implicitRedirectExceptions = NULL;
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if (!compAddAlternateVisuals(pScreen, cs)) {
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free(cs);
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return FALSE;
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}
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if (!disableBackingStore)
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pScreen->backingStoreSupport = WhenMapped;
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cs->PositionWindow = pScreen->PositionWindow;
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pScreen->PositionWindow = compPositionWindow;
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cs->CopyWindow = pScreen->CopyWindow;
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pScreen->CopyWindow = compCopyWindow;
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cs->CreateWindow = pScreen->CreateWindow;
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pScreen->CreateWindow = compCreateWindow;
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cs->DestroyWindow = pScreen->DestroyWindow;
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pScreen->DestroyWindow = compDestroyWindow;
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cs->RealizeWindow = pScreen->RealizeWindow;
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pScreen->RealizeWindow = compRealizeWindow;
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cs->UnrealizeWindow = pScreen->UnrealizeWindow;
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pScreen->UnrealizeWindow = compUnrealizeWindow;
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cs->ClipNotify = pScreen->ClipNotify;
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pScreen->ClipNotify = compClipNotify;
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cs->ConfigNotify = pScreen->ConfigNotify;
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pScreen->ConfigNotify = compConfigNotify;
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cs->MoveWindow = pScreen->MoveWindow;
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pScreen->MoveWindow = compMoveWindow;
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cs->ResizeWindow = pScreen->ResizeWindow;
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pScreen->ResizeWindow = compResizeWindow;
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cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;
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pScreen->ChangeBorderWidth = compChangeBorderWidth;
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cs->ReparentWindow = pScreen->ReparentWindow;
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pScreen->ReparentWindow = compReparentWindow;
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cs->InstallColormap = pScreen->InstallColormap;
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pScreen->InstallColormap = compInstallColormap;
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cs->ChangeWindowAttributes = pScreen->ChangeWindowAttributes;
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pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
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cs->BlockHandler = NULL;
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cs->CloseScreen = pScreen->CloseScreen;
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pScreen->CloseScreen = compCloseScreen;
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cs->GetImage = pScreen->GetImage;
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pScreen->GetImage = compGetImage;
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cs->GetSpans = pScreen->GetSpans;
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pScreen->GetSpans = compGetSpans;
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cs->SourceValidate = pScreen->SourceValidate;
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pScreen->SourceValidate = compSourceValidate;
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dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, cs);
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RegisterRealChildHeadProc(CompositeRealChildHead);
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return TRUE;
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}
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