Remove drawCursorImage() from the OpenVG composition helper

The drawCursorPixmap() function is more efficient and can render
the QImage form of the QPixmap directly if necessary.

Reviewed-by: trustme

2 files changed, 33 insertions, 37 deletions

diff --git a/src/openvg/qpaintengine_vg.cpp b/src/openvg/qpaintengine_vg.cpp
index 94e0793..8a485a0 100644
--- a/src/openvg/qpaintengine_vg.cpp
+++ b/src/openvg/qpaintengine_vg.cpp
@@ -3574,51 +3574,48 @@ void QVGCompositionHelper::fillBackground
     }
 }
 
-void QVGCompositionHelper::drawCursorImage
-    (const QImage& image, const QPoint& offset)
+void QVGCompositionHelper::drawCursorPixmap
+    (const QPixmap& pixmap, const QPoint& offset)
 {
-    QImage img = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
+    VGImage vgImage = VG_INVALID_HANDLE;
 
-    VGImage vgImg = vgCreateImage
-        (VG_sARGB_8888_PRE, img.width(), img.height(),
-         VG_IMAGE_QUALITY_FASTER);
-    vgImageSubData
-        (vgImg, img.bits() + img.bytesPerLine() * (img.height() - 1),
-         -(img.bytesPerLine()), VG_sARGB_8888_PRE, 0, 0,
-         img.width(), img.height());
+    // Fetch the VGImage from the pixmap if possible.
+    QPixmapData *pd = pixmap.pixmapData();
+    if (pd->classId() == QPixmapData::OpenVGClass) {
+        QVGPixmapData *vgpd = static_cast<QVGPixmapData *>(pd);
+        if (vgpd->isValid())
+            vgImage = vgpd->toVGImage();
+    }
 
-    QTransform transform;
-    int y = screenSize.height() - (offset.y() + img.height());
-    transform.translate(offset.x() + 0.5f, y + 0.5f);
+    // Set the image transformation and modes.
+    VGfloat devh = screenSize.height() - 1;
+    QTransform transform(1.0f, 0.0f, 0.0f,
+                         0.0f, -1.0f, 0.0f,
+                         -0.5f, devh + 0.5f, 1.0f);
+    transform.translate(offset.x(), offset.y());
     d->setTransform(VG_MATRIX_IMAGE_USER_TO_SURFACE, transform);
-
     d->setImageMode(VG_DRAW_IMAGE_NORMAL);
-    vgDrawImage(vgImg);
 
-    vgDestroyImage(vgImg);
-}
+    // Draw the VGImage.
+    if (vgImage != VG_INVALID_HANDLE) {
+        vgDrawImage(vgImage);
+    } else {
+        QImage img = pixmap.toImage().convertToFormat
+            (QImage::Format_ARGB32_Premultiplied);
 
-void QVGCompositionHelper::drawCursorPixmap
-    (const QPixmap& pixmap, const QPoint& offset)
-{
-    QPixmapData *pd = pixmap.pixmapData();
-    if (pd->classId() == QPixmapData::OpenVGClass) {
-        QVGPixmapData *vgpd = static_cast<QVGPixmapData *>(pd);
-        if (vgpd->isValid()) {
-            VGfloat devh = screenSize.height() - 1;
-            QTransform transform(1.0f, 0.0f, 0.0f,
-                                 0.0f, -1.0f, 0.0f,
-                                 -0.5f, devh + 0.5f, 1.0f);
-            transform.translate(offset.x(), offset.y());
-            d->setTransform(VG_MATRIX_IMAGE_USER_TO_SURFACE, transform);
-
-            d->setImageMode(VG_DRAW_IMAGE_NORMAL);
-            vgDrawImage(vgpd->toVGImage());
+        vgImage = vgCreateImage
+            (VG_sARGB_8888_PRE, img.width(), img.height(),
+             VG_IMAGE_QUALITY_FASTER);
+        if (vgImage == VG_INVALID_HANDLE)
             return;
-        }
-    }
+        vgImageSubData
+            (vgImage, img.bits() + img.bytesPerLine() * (img.height() - 1),
+             -(img.bytesPerLine()), VG_sARGB_8888_PRE, 0, 0,
+             img.width(), img.height());
 
-    drawCursorImage(pixmap.toImage(), offset);
+        vgDrawImage(vgImage);
+        vgDestroyImage(vgImage);
+    }
 }
 
 void QVGCompositionHelper::setScissor(const QRegion& region)
diff --git a/src/openvg/qvgcompositionhelper_p.h b/src/openvg/qvgcompositionhelper_p.h
index 6317c3f..3afe31e 100644
--- a/src/openvg/qvgcompositionhelper_p.h
+++ b/src/openvg/qvgcompositionhelper_p.h
@@ -74,7 +74,6 @@ public:
     void blitWindow(QVGEGLWindowSurfacePrivate *surface, const QRect& rect,
                     const QPoint& topLeft, int opacity);
     void fillBackground(const QRegion& region, const QBrush& brush);
-    void drawCursorImage(const QImage& image, const QPoint& offset);
     void drawCursorPixmap(const QPixmap& pixmap, const QPoint& offset);
     void setScissor(const QRegion& region);
     void clearScissor();