1 files changed, 405 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/miext/rootless/rootlessCommon.c b/nx-X11/programs/Xserver/miext/rootless/rootlessCommon.c
new file mode 100644
index 000000000..33321105e
--- /dev/null
+++ b/nx-X11/programs/Xserver/miext/rootless/rootlessCommon.c
@@ -0,0 +1,405 @@
+/*
+ * Common rootless definitions and code
+ */
+/*
+ * Copyright (c) 2001 Greg Parker. All Rights Reserved.
+ * Copyright (c) 2002-2003 Torrey T. Lyons. All Rights Reserved.
+ * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
+ *
+ * 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 ABOVE LISTED COPYRIGHT HOLDER(S) 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(s) of the above 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.
+ */
+/* $XFree86: xc/programs/Xserver/miext/rootless/rootlessCommon.c,v 1.6 2004/07/02 01:30:33 torrey Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "rootlessCommon.h"
+
+unsigned int rootless_CopyBytes_threshold = 0;
+unsigned int rootless_FillBytes_threshold = 0;
+unsigned int rootless_CompositePixels_threshold = 0;
+unsigned int rootless_CopyWindow_threshold = 0;
+#ifdef ROOTLESS_GLOBAL_COORDS
+int rootlessGlobalOffsetX = 0;
+int rootlessGlobalOffsetY = 0;
+#endif
+
+RegionRec rootlessHugeRoot = {{-32767, -32767, 32767, 32767}, NULL};
+
+/* Following macro from miregion.c */
+
+/*  true iff two Boxes overlap */
+#define EXTENTCHECK(r1,r2) \
+      (!( ((r1)->x2 <= (r2)->x1)  || \
+          ((r1)->x1 >= (r2)->x2)  || \
+          ((r1)->y2 <= (r2)->y1)  || \
+          ((r1)->y1 >= (r2)->y2) ) )
+
+
+/*
+ * TopLevelParent
+ *  Returns the top-level parent of pWindow.
+ *  The root is the top-level parent of itself, even though the root is
+ *  not otherwise considered to be a top-level window.
+ */
+WindowPtr
+TopLevelParent(WindowPtr pWindow)
+{
+    WindowPtr top;
+
+    if (IsRoot(pWindow))
+        return pWindow;
+
+    top = pWindow;
+    while (top && ! IsTopLevel(top))
+        top = top->parent;
+
+    return top;
+}
+
+
+/*
+ * IsFramedWindow
+ *  Returns TRUE if this window is visible inside a frame
+ *  (e.g. it is visible and has a top-level or root parent)
+ */
+Bool
+IsFramedWindow(WindowPtr pWin)
+{
+    WindowPtr top;
+
+    if (!pWin->realized)
+        return FALSE;
+    top = TopLevelParent(pWin);
+
+    return (top && WINREC(top));
+}
+
+
+/*
+ * RootlessStartDrawing
+ *  Prepare a window for direct access to its backing buffer.
+ *  Each top-level parent has a Pixmap representing its backing buffer,
+ *  which all of its children inherit.
+ */
+void RootlessStartDrawing(WindowPtr pWindow)
+{
+    ScreenPtr pScreen = pWindow->drawable.pScreen;
+    WindowPtr top = TopLevelParent(pWindow);
+    RootlessWindowRec *winRec;
+
+    if (top == NULL)
+        return;
+    winRec = WINREC(top);
+    if (winRec == NULL)
+        return;
+
+    // Make sure the window's top-level parent is prepared for drawing.
+    if (!winRec->is_drawing) {
+        int bw = wBorderWidth(top);
+
+        SCREENREC(pScreen)->imp->StartDrawing(winRec->wid, &winRec->pixelData,
+                                              &winRec->bytesPerRow);
+
+        winRec->pixmap =
+            GetScratchPixmapHeader(pScreen, winRec->width, winRec->height,
+                                   top->drawable.depth,
+                                   top->drawable.bitsPerPixel,
+                                   winRec->bytesPerRow,
+                                   winRec->pixelData);
+        SetPixmapBaseToScreen(winRec->pixmap,
+                              top->drawable.x - bw, top->drawable.y - bw);
+
+        winRec->is_drawing = TRUE;
+    }
+
+    winRec->oldPixmap = pScreen->GetWindowPixmap(pWindow);
+    pScreen->SetWindowPixmap(pWindow, winRec->pixmap);
+}
+
+
+/*
+ * RootlessStopDrawing
+ *  Stop drawing to a window's backing buffer. If flush is true,
+ *  damaged regions are flushed to the screen.
+ */
+void RootlessStopDrawing(WindowPtr pWindow, Bool flush)
+{
+    ScreenPtr pScreen = pWindow->drawable.pScreen;
+    WindowPtr top = TopLevelParent(pWindow);
+    RootlessWindowRec *winRec;
+
+    if (top == NULL)
+        return;
+    winRec = WINREC(top);
+    if (winRec == NULL)
+        return;
+
+    if (winRec->is_drawing) {
+        SCREENREC(pScreen)->imp->StopDrawing(winRec->wid, flush);
+
+        FreeScratchPixmapHeader(winRec->pixmap);
+        pScreen->SetWindowPixmap(pWindow, winRec->oldPixmap);
+        winRec->pixmap = NULL;
+
+        winRec->is_drawing = FALSE;
+    }
+    else if (flush) {
+        SCREENREC(pScreen)->imp->UpdateRegion(winRec->wid, NULL);
+    }
+
+    if (flush && winRec->is_reorder_pending) {
+        winRec->is_reorder_pending = FALSE;
+        RootlessReorderWindow(pWindow);
+    }
+}
+
+
+/*
+ * RootlessDamageRegion
+ *  Mark a damaged region as requiring redisplay to screen.
+ *  pRegion is in GLOBAL coordinates.
+ */
+void
+RootlessDamageRegion(WindowPtr pWindow, RegionPtr pRegion)
+{
+    ScreenPtr pScreen = pWindow->drawable.pScreen;
+    RootlessWindowRec *winRec;
+    RegionRec clipped;
+    WindowPtr pTop;
+    BoxPtr b1, b2;
+
+    RL_DEBUG_MSG("Damaged win 0x%x ", pWindow);
+
+    pTop = TopLevelParent(pWindow);
+    if (pTop == NULL)
+        return;
+
+    winRec = WINREC(pTop);
+    if (winRec == NULL)
+        return;
+
+    /* We need to intersect the drawn region with the clip of the window
+       to avoid marking places we didn't actually draw (which can cause
+       problems when the window has an extra client-side backing store)
+
+       But this is a costly operation and since we'll normally just be
+       drawing inside the clip, go to some lengths to avoid the general
+       case intersection. */
+
+    b1 = REGION_EXTENTS(pScreen, &pWindow->borderClip);
+    b2 = REGION_EXTENTS(pScreen, pRegion);
+
+    if (EXTENTCHECK(b1, b2)) {
+        /* Regions may overlap. */
+
+        if (REGION_NUM_RECTS(pRegion) == 1) {
+            int in;
+
+            /* Damaged region only has a single rect, so we can
+               just compare that against the region */
+
+            in = RECT_IN_REGION(pScreen, &pWindow->borderClip,
+                                REGION_RECTS (pRegion));
+            if (in == rgnIN) {
+            /* clip totally contains pRegion */
+
+#ifdef ROOTLESS_TRACK_DAMAGE
+                REGION_UNION(pScreen, &winRec->damage,
+                                 &winRec->damage, (pRegion));
+#else
+                SCREENREC(pScreen)->imp->DamageRects(winRec->wid,
+                                REGION_NUM_RECTS(pRegion),
+                                REGION_RECTS(pRegion),
+                                -winRec->x, -winRec->y);
+#endif
+
+                RootlessQueueRedisplay(pTop->drawable.pScreen);
+                goto out;
+            }
+            else if (in == rgnOUT) {
+                /* clip doesn't contain pRegion */
+
+                goto out;
+            }
+        }
+
+        /* clip overlaps pRegion, need to intersect */
+
+        REGION_NULL(pScreen, &clipped);
+        REGION_INTERSECT(pScreen, &clipped, &pWindow->borderClip, pRegion);
+
+#ifdef ROOTLESS_TRACK_DAMAGE
+        REGION_UNION(pScreen, &winRec->damage,
+                     &winRec->damage, (pRegion));
+#else
+        SCREENREC(pScreen)->imp->DamageRects(winRec->wid,
+                        REGION_NUM_RECTS(&clipped),
+                        REGION_RECTS(&clipped),
+                        -winRec->x, -winRec->y);
+#endif
+
+        REGION_UNINIT(pScreen, &clipped);
+
+        RootlessQueueRedisplay(pTop->drawable.pScreen);
+    }
+
+out:
+#ifdef ROOTLESSDEBUG
+    {
+        BoxRec *box = REGION_RECTS(pRegion), *end;
+        int numBox = REGION_NUM_RECTS(pRegion);
+
+        for (end = box+numBox; box < end; box++) {
+            RL_DEBUG_MSG("Damage rect: %i, %i, %i, %i\n",
+                         box->x1, box->x2, box->y1, box->y2);
+        }
+    }
+#endif
+    return;
+}
+
+
+/*
+ * RootlessDamageBox
+ *  Mark a damaged box as requiring redisplay to screen.
+ *  pRegion is in GLOBAL coordinates.
+ */
+void
+RootlessDamageBox(WindowPtr pWindow, BoxPtr pBox)
+{
+    RegionRec region;
+
+    REGION_INIT(pWindow->drawable.pScreen, &region, pBox, 1);
+
+    RootlessDamageRegion(pWindow, &region);
+
+    REGION_UNINIT(pWindow->drawable.pScreen, &region);  /* no-op */
+}
+
+
+/*
+ * RootlessDamageRect
+ *  Mark a damaged rectangle as requiring redisplay to screen.
+ *  (x, y, w, h) is in window-local coordinates.
+ */
+void
+RootlessDamageRect(WindowPtr pWindow, int x, int y, int w, int h)
+{
+    BoxRec box;
+    RegionRec region;
+
+    x += pWindow->drawable.x;
+    y += pWindow->drawable.y;
+
+    box.x1 = x;
+    box.x2 = x + w;
+    box.y1 = y;
+    box.y2 = y + h;
+
+    REGION_INIT(pWindow->drawable.pScreen, &region, &box, 1);
+
+    RootlessDamageRegion(pWindow, &region);
+
+    REGION_UNINIT(pWindow->drawable.pScreen, &region);  /* no-op */
+}
+
+
+/*
+ * RootlessRedisplay
+ *  Stop drawing and redisplay the damaged region of a window.
+ */
+void
+RootlessRedisplay(WindowPtr pWindow)
+{
+#ifdef ROOTLESS_TRACK_DAMAGE
+
+    RootlessWindowRec *winRec = WINREC(pWindow);
+    ScreenPtr pScreen = pWindow->drawable.pScreen;
+
+    RootlessStopDrawing(pWindow, FALSE);
+
+    if (REGION_NOTEMPTY(pScreen, &winRec->damage)) {
+        RL_DEBUG_MSG("Redisplay Win 0x%x, %i x %i @ (%i, %i)\n",
+                     pWindow, winRec->width, winRec->height,
+                     winRec->x, winRec->y);
+
+        // move region to window local coords
+        REGION_TRANSLATE(pScreen, &winRec->damage,
+                         -winRec->x, -winRec->y);
+
+        SCREENREC(pScreen)->imp->UpdateRegion(winRec->wid, &winRec->damage);
+
+        REGION_EMPTY(pScreen, &winRec->damage);
+    }
+
+#else   /* !ROOTLESS_TRACK_DAMAGE */
+
+    RootlessStopDrawing(pWindow, TRUE);
+
+#endif
+}
+
+
+/*
+ * RootlessRepositionWindows
+ *  Reposition all windows on a screen to their correct positions.
+ */
+void
+RootlessRepositionWindows(ScreenPtr pScreen)
+{
+    WindowPtr root = WindowTable[pScreen->myNum];
+    WindowPtr win;
+
+    if (root != NULL) {
+        RootlessRepositionWindow(root);
+
+        for (win = root->firstChild; win; win = win->nextSib) {
+            if (WINREC(win) != NULL)
+                RootlessRepositionWindow(win);
+        }
+    }
+}
+
+
+/*
+ * RootlessRedisplayScreen
+ *  Walk every window on a screen and redisplay the damaged regions.
+ */
+void
+RootlessRedisplayScreen(ScreenPtr pScreen)
+{
+    WindowPtr root = WindowTable[pScreen->myNum];
+
+    if (root != NULL) {
+        WindowPtr win;
+
+        RootlessRedisplay(root);
+        for (win = root->firstChild; win; win = win->nextSib) {
+            if (WINREC(win) != NULL) {
+                RootlessRedisplay(win);
+            }
+        }
+    }
+}