SVG viewer example: Improve zoom facilityv5.11.0-beta3v5.11.0-beta2

Add a label displaying the current zoom with
a tooltip.

Add menu actions for ZoomIn/ZoomOut and Reset.

Task-number: QTBUG-60653
Change-Id: I7569427345737024b7a3191677e54c83673bb40e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/examples/svg/svgviewer/svgview.h b/examples/svg/svgviewer/svgview.h
index 2a1a5ed..1b6b33e 100644
--- a/examples/svg/svgviewer/svgview.h
+++ b/examples/svg/svgviewer/svgview.h
@@ -76,16 +76,26 @@ public:
     QSize svgSize() const;
     QSvgRenderer *renderer() const;
 
+    qreal zoomFactor() const;
+
 public slots:
     void setHighQualityAntialiasing(bool highQualityAntialiasing);
     void setViewBackground(bool enable);
     void setViewOutline(bool enable);
+    void zoomIn();
+    void zoomOut();
+    void resetZoom();
+
+signals:
+    void zoomChanged();
 
 protected:
     void wheelEvent(QWheelEvent *event) override;
     void paintEvent(QPaintEvent *event) override;
 
 private:
+    void zoomBy(qreal factor);
+
     RendererType m_renderer;
 
     QGraphicsSvgItem *m_svgItem;