X-Git-Url: https://git.quassel-irc.org/?a=blobdiff_plain;f=src%2Fqtui%2Fchatitem.cpp;h=117ec10d4781b6ec75d6d27d2909b245f073df66;hb=e105229e4443fbb05496fcec02a83cb8ffba09db;hp=57265137e4c017ac661284b658bb4108fa1c2d48;hpb=a7f69cdd5a7ddd31fc461bc41f2320ba3e3e4738;p=quassel.git

diff --git a/src/qtui/chatitem.cpp b/src/qtui/chatitem.cpp
index 57265137..117ec10d 100644
--- a/src/qtui/chatitem.cpp
+++ b/src/qtui/chatitem.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-2013 by the Quassel Project                        *
+ *   Copyright (C) 2005-2014 by the Quassel Project                        *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -504,31 +504,29 @@ void SenderChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *op
 
     if (layoutWidth > width()) {
         // Draw a nice gradient for longer items
-        // Qt's text drawing with a gradient brush sucks, so we use an alpha-channeled pixmap instead
+        // Qt's text drawing with a gradient brush sucks, so we use compositing instead
         QPixmap pixmap(layout()->boundingRect().toRect().size());
         pixmap.fill(Qt::transparent);
+
         QPainter pixPainter(&pixmap);
         layout()->draw(&pixPainter, QPointF(qMax(offset, (qreal)0), 0), additionalFormats());
-        pixPainter.end();
 
         // Create alpha channel mask
-        QPixmap mask(pixmap.size());
-        QPainter maskPainter(&mask);
         QLinearGradient gradient;
         if (offset < 0) {
             gradient.setStart(0, 0);
             gradient.setFinalStop(12, 0);
-            gradient.setColorAt(0, Qt::black);
+            gradient.setColorAt(0, Qt::transparent);
             gradient.setColorAt(1, Qt::white);
         }
         else {
             gradient.setStart(width()-10, 0);
             gradient.setFinalStop(width(), 0);
             gradient.setColorAt(0, Qt::white);
-            gradient.setColorAt(1, Qt::black);
+            gradient.setColorAt(1, Qt::transparent);
         }
-        maskPainter.fillRect(0, 0, pixmap.width(), pixmap.height(), gradient);
-        pixmap.setAlphaChannel(mask);
+        pixPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn); // gradient's alpha gets applied to the pixmap
+        pixPainter.fillRect(pixmap.rect(), gradient);
         painter->drawPixmap(pos(), pixmap);
     }
     else {