From 9c9e6e4371c75e8a5be522ac0b070c48cda9afd3 Mon Sep 17 00:00:00 2001
From: "Aaron J. Seigo" <aseigo@kde.org>
Date: Sun, 18 Nov 2007 21:33:04 +0000
Subject: [PATCH] provide a rounded rectangle path generator so we can share
 this implementatoin around plasma

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=738424
---
 plasma.cpp | 15 +++++++++++++++
 plasma.h   |  6 ++++++
 2 files changed, 21 insertions(+)

diff --git a/plasma.cpp b/plasma.cpp
index 390bd0e23..4b4071ad6 100644
--- a/plasma.cpp
+++ b/plasma.cpp
@@ -62,4 +62,19 @@ Direction locationToDirection(Location location)
     return Down;
 }
 
+QPainterPath roundedRectangle(const QRectF& rect, qreal radius)
+{
+    QPainterPath path(QPointF(rect.left(), rect.top() + radius));
+    path.quadTo(rect.left(), rect.top(), rect.left() + radius, rect.top());         // Top left corner
+    path.lineTo(rect.right() - radius, rect.top());                                 // Top side
+    path.quadTo(rect.right(), rect.top(), rect.right(), rect.top() + radius);       // Top right corner
+    path.lineTo(rect.right(), rect.bottom() - radius);                              // Right side
+    path.quadTo(rect.right(), rect.bottom(), rect.right() - radius, rect.bottom()); // Bottom right corner
+    path.lineTo(rect.left() + radius, rect.bottom());                               // Bottom side
+    path.quadTo(rect.left(), rect.bottom(), rect.left(), rect.bottom() - radius);   // Bottom left corner
+    path.closeSubpath();
+
+    return path;
+}
+
 } // Plasma namespace
diff --git a/plasma.h b/plasma.h
index e76e3683c..617d85452 100644
--- a/plasma.h
+++ b/plasma.h
@@ -21,6 +21,7 @@
 #define PLASMA_DEFS_H
 
 #include <QtGui/QGraphicsItem>
+#include <QtGui/QPainterPath>
 
 #include <plasma/plasma_export.h>
 
@@ -136,6 +137,11 @@ PLASMA_EXPORT qreal scalingFactor(ZoomLevel level);
  **/
 PLASMA_EXPORT Direction locationToDirection(Location location);
 
+/**
+ * Returns a nicely rounded rectanglular path for painting.
+ */
+PLASMA_EXPORT QPainterPath roundedRectangle(const QRectF& rect, qreal radius);
+
 } // Plasma namespace
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Plasma::Constraints)