Changeset 4098 in vbox for trunk/src/VBox

Timestamp:

Aug 9, 2007 3:41:38 PM (18 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

23553

Message:

2079: Create seamless mode for Windows guests:

WinAPI QWidget::setMask() reimplementation to avoid flicker in Seamless Mode under Win32. Some type of rasterizer used to update only the changed region.

Location:

trunk/src/VBox/Frontends/VirtualBox

Files:

• include/VBoxConsoleWnd.h (modified) (2 diffs)
• src/VBoxConsoleWnd.cpp (modified) (2 diffs)

trunk/src/VBox/Frontends/VirtualBox/include/VBoxConsoleWnd.h

@@ -76 +76 @@
 
     void installGuestAdditionsFrom (const QString &aSource);
+
+#ifdef Q_WS_WIN32
+    void setMask (const QRegion &aRegion);
+#endif
 
 public slots:
@@ -284 +288 @@
     QSize prev_min_size;
 
+#ifdef Q_WS_WIN32
+    QRegion mPrevRegion;
+#endif
+
     // variables for dealing with true fullscreen
     bool mIsFullscreen : 1;

trunk/src/VBox/Frontends/VirtualBox/src/VBoxConsoleWnd.cpp

@@ -1885 +1885 @@
             QApplication::desktop()->screenGeometry (this);
 
+#ifdef Q_WS_WIN32
+        mPrevRegion = scrGeo;
+#endif
+
         /* hide early to avoid extra flicker */
         hide();
@@ -2389 +2393 @@
         updateAppearanceOf (DVDStuff);
 }
+
+#ifdef Q_WS_WIN32
+void VBoxConsoleWnd::setMask (const QRegion &aRegion)
+{
+    QRegion diff = mPrevRegion.subtract (aRegion);
+
+    /* Region offset calculation */
+    int fleft = 0, ftop = 0;
+    if (isTopLevel())
+    {
+        ftop = topData()->ftop;
+        fleft = topData()->fleft;
+    }
+
+    /* Visible region calculation */
+    HRGN newReg = CreateRectRgn (0, 0, 0, 0);
+    CombineRgn (newReg, aRegion.handle(), 0, RGN_COPY);
+    OffsetRgn (newReg, fleft, ftop);
+
+    /* Invisible region calculation */
+    HRGN oldReg = CreateRectRgn (0, 0, 0, 0);
+    CombineRgn (oldReg, diff.handle(), 0, RGN_COPY);
+    OffsetRgn (oldReg, fleft, ftop);
+
+    /* Set the current visible region and clean the previous */
+    SetWindowRgn (winId(), newReg, FALSE);
+    ValidateRgn (winId(), newReg);
+    RedrawWindow (NULL, NULL, oldReg, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
+
+    mPrevRegion = aRegion;
+}
+#endif
 
 /**