ImageButton: Set default image resampling quality to high

Author: reuk

modules/juce_gui_basics/buttons/juce_ImageButton.cpp

@@ -43,10 +43,6 @@ ImageButton::ImageButton (const String& text_)
 {
 }
 
-ImageButton::~ImageButton()
-{
-}
-
 void ImageButton::setImages (const bool resizeButtonNowToFitThisImage,
                              const bool rescaleImagesWhenButtonSizeChanges,
                              const bool preserveImageProportions,
@@ -120,6 +116,8 @@ void ImageButton::paintButton (Graphics& g,
                                bool shouldDrawButtonAsHighlighted,
                                bool shouldDrawButtonAsDown)
 {
+    g.setImageResamplingQuality (resamplingQuality);
+
     if (! isEnabled())
     {
         shouldDrawButtonAsHighlighted = false;
@@ -204,4 +202,10 @@ bool ImageButton::hitTest (int x, int y)
                                                                ((y - imageBounds.getY()) * im.getHeight()) / imageBounds.getHeight()).getAlpha());
 }
 
+void ImageButton::setImageResamplingQuality (Graphics::ResamplingQuality newQuality)
+{
+    if (std::exchange (resamplingQuality, newQuality) != newQuality)
+        repaint();
+}
+
 } // namespace juce

modules/juce_gui_basics/buttons/juce_ImageButton.h

@@ -59,9 +59,6 @@ class JUCE_API  ImageButton  : public Button
     */
     explicit ImageButton (const String& name = String());
 
-    /** Destructor. */
-    ~ImageButton() override;
-
     //==============================================================================
     /** Sets up the images to draw in various states.
 
@@ -146,6 +143,15 @@ class JUCE_API  ImageButton  : public Button
                                       const Colour& overlayColour, float imageOpacity, ImageButton&) = 0;
     };
 
+    /** Sets the resampling quality to use when drawing the image.
+
+        This will have the most noticeable effect when the ImageButton size does not match the
+        image size.
+
+        Defaults to highResamplingQuality.
+    */
+    void setImageResamplingQuality (Graphics::ResamplingQuality newQuality);
+
 protected:
     //==============================================================================
     /** @internal */
@@ -161,6 +167,7 @@ class JUCE_API  ImageButton  : public Button
     Image normalImage, overImage, downImage;
     float normalOpacity, overOpacity, downOpacity;
     Colour normalOverlay, overOverlay, downOverlay;
+    Graphics::ResamplingQuality resamplingQuality = Graphics::ResamplingQuality::highResamplingQuality;
 
     Image getCurrentImage() const;