From 2ab6d6f8426037db579f56be80285e8714f37845 Mon Sep 17 00:00:00 2001
From: Eike Hein <hein@kde.org>
Date: Wed, 2 Jan 2008 19:48:30 +0000
Subject: [PATCH] On second thought, keep the mask - less work for Qt.

svn path=/trunk/KDE/kdegraphics/okular/; revision=756115
---
 ui/pageviewutils.cpp | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/ui/pageviewutils.cpp b/ui/pageviewutils.cpp
index ecad90ba2..52c158957 100644
--- a/ui/pageviewutils.cpp
+++ b/ui/pageviewutils.cpp
@@ -628,15 +628,27 @@ void ToolBarPrivate::buildToolBar()
     bool prevUpdates = q->updatesEnabled();
     q->setUpdatesEnabled( false );
 
-    // 3. resize pixmap and widget
+    // 3. resize pixmap, mask and widget
+    QBitmap mask( myWidth + 1, myHeight + 1 );
     backgroundPixmap = QPixmap( myWidth + 1, myHeight + 1 );
     backgroundPixmap.fill(Qt::transparent);
     q->resize( myWidth + 1, myHeight + 1 );
 
-    // 4. draw background
+    // 4. create and set transparency mask          // 4. draw background
+    QPainter maskPainter( &mask);       
+    mask.fill( Qt::white );     
+    maskPainter.setBrush( Qt::black );          
+    if ( vertical )     
+        maskPainter.drawRoundRect( topLeft ? -10 : 0, 0, myWidth + 10, myHeight, 2000 / (myWidth + 10), 2000 / myHeight );      
+    else        
+        maskPainter.drawRoundRect( 0, topLeft ? -10 : 0, myWidth, myHeight + 10, 2000 / myWidth, 2000 / (myHeight + 10) );      
+    maskPainter.end();          
+    q->setMask( mask );
+
+    // 5. draw background
     QPainter bufferPainter( &backgroundPixmap );
     QPalette pal = q->palette();
-    // 4.1. draw horizontal/vertical gradient
+    // 5.1. draw horizontal/vertical gradient
     QLinearGradient grad;
     switch ( anchorSide )
     {
@@ -656,14 +668,14 @@ void ToolBarPrivate::buildToolBar()
     grad.setColorAt( 0, pal.color( QPalette::Active, QPalette::Button ) );
     grad.setColorAt( 1, pal.color( QPalette::Active, QPalette::Light ) );
     bufferPainter.setBrush( QBrush( grad ) );
-    // 4.2. draw rounded border
+    // 5.2. draw rounded border
     bufferPainter.setPen( pal.color( QPalette::Active, QPalette::Dark ) );
     bufferPainter.setRenderHints( QPainter::Antialiasing );
     if ( vertical )
         bufferPainter.drawRoundRect( topLeft ? -10 : 0, 0, myWidth + 10, myHeight, 2000 / (myWidth + 10), 2000 / myHeight );
     else
         bufferPainter.drawRoundRect( 0, topLeft ? -10 : 0, myWidth, myHeight + 10, 2000 / myWidth, 2000 / (myHeight + 10) );
-    // 4.3. draw handle
+    // 5.3. draw handle
     bufferPainter.setPen( pal.color( QPalette::Active, QPalette::Mid ) );
     if ( vertical )
     {
@@ -684,7 +696,7 @@ void ToolBarPrivate::buildToolBar()
         bufferPainter.drawLine( 10, dy + 1, 10, dy + myHeight - 7 );
     }
 
-    // 5. reposition buttons (in rows/col grid)
+    // 6. reposition buttons (in rows/col grid)
     int gridX = 0,
         gridY = 0;
     QLinkedList< ToolBarButton * >::const_iterator it = buttons.begin(), end = buttons.end();