Gradient support Part 1

TODO:
 - Finish scatter
 - QML (maybe left until data set is sorted, though)

Change-Id: I87a8117cb29f147080e0662c55b1098cb2e71689
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/datavisualization/utils/texturehelper.cpp b/src/datavisualization/utils/texturehelper.cpp
index 9e2b9811..8e556b44 100644
--- a/src/datavisualization/utils/texturehelper.cpp
+++ b/src/datavisualization/utils/texturehelper.cpp
@@ -20,6 +20,7 @@
 #include "utils_p.h"
 
 #include <QImage>
+#include <QPainter>
 
 #include <QDebug>
 
@@ -152,6 +153,18 @@ GLuint TextureHelper::createSelectionTexture(const QSize &size, GLuint &frameBuf
     return textureid;
 }
 
+GLuint TextureHelper::createGradientTexture(const QLinearGradient &gradient)
+{
+    QImage image(QSize(int(gradientTextureWidth), int(gradientTextureHeight)),
+                 QImage::Format_RGB32);
+    QPainter pmp(&image);
+    pmp.setBrush(QBrush(gradient));
+    pmp.setPen(Qt::NoPen);
+    pmp.drawRect(0, 0, int(gradientTextureWidth), int(gradientTextureHeight));
+
+    return create2DTexture(image, false, true);
+}
+
 #if !defined(QT_OPENGL_ES_2)
 GLuint TextureHelper::createDepthTexture(const QSize &size, GLuint &frameBuffer, GLuint textureSize)
 {