BubbleComponent: allow customisable effects

Rename look-and-feel method and update docs

modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.cpp

@@ -206,6 +206,8 @@ LookAndFeel_V2::LookAndFeel_V2()
 
     for (int i = 0; i < numElementsInArray (standardColours); i += 2)
         setColour ((int) standardColours [i], Colour ((uint32) standardColours [i + 1]));
+
+    bubbleShadow.setShadowProperties (DropShadow (Colours::black.withAlpha (0.35f), 5, {}));
 }
 
 LookAndFeel_V2::~LookAndFeel_V2()  {}
@@ -839,6 +841,10 @@ void LookAndFeel_V2::drawBubble (Graphics& g, BubbleComponent& comp,
     g.strokePath (p, PathStrokeType (1.0f));
 }
 
+void LookAndFeel_V2::setComponentEffectForBubbleComponent (BubbleComponent& bubbleComponent)
+{
+    bubbleComponent.setComponentEffect (&bubbleShadow);
+}
 
 //==============================================================================
 Font LookAndFeel_V2::getPopupMenuFont()

modules/juce_gui_basics/lookandfeel/juce_LookAndFeel_V2.h

@@ -150,6 +150,7 @@ public:
 
     //==============================================================================
     void drawBubble (Graphics&, BubbleComponent&, const Point<float>& tip, const Rectangle<float>& body) override;
+    void setComponentEffectForBubbleComponent (BubbleComponent& bubbleComponent) override;
 
     void drawLasso (Graphics&, Component&) override;
 
@@ -412,6 +413,7 @@ public:
 private:
     //==============================================================================
     std::unique_ptr<Drawable> folderImage, documentImage;
+    DropShadowEffect bubbleShadow;
 
     void drawShinyButtonShape (Graphics&,
                                float x, float y, float w, float h, float maxCornerSize,

modules/juce_gui_basics/misc/juce_BubbleComponent.cpp

@@ -30,14 +30,17 @@ BubbleComponent::BubbleComponent()
   : allowablePlacements (above | below | left | right)
 {
     setInterceptsMouseClicks (false, false);
-
-    shadow.setShadowProperties (DropShadow (Colours::black.withAlpha (0.35f), 5, Point<int>()));
-    setComponentEffect (&shadow);
+    lookAndFeelChanged();
 }
 
 BubbleComponent::~BubbleComponent() {}
 
 //==============================================================================
+void BubbleComponent::lookAndFeelChanged()
+{
+    getLookAndFeel().setComponentEffectForBubbleComponent (*this);
+}
+
 void BubbleComponent::paint (Graphics& g)
 {
     getLookAndFeel().drawBubble (g, *this, arrowTip.toFloat(), content.toFloat());

modules/juce_gui_basics/misc/juce_BubbleComponent.h

@@ -151,14 +151,33 @@ public:
     {
         virtual ~LookAndFeelMethods() = default;
 
-        virtual void drawBubble (Graphics&, BubbleComponent&,
+        /** Override this method to draw a speech-bubble pointing at a specific location on
+            the screen.
+        */
+        virtual void drawBubble (Graphics& g,
+                                 BubbleComponent& bubbleComponent,
                                  const Point<float>& positionOfTip,
                                  const Rectangle<float>& body) = 0;
+
+        /** Override this method to set effects, such as a drop-shadow, on a
+            BubbleComponent.
+
+            This will be called whenever a BubbleComponent is constructed or its
+            look-and-feel changes.
+
+            If you need to trigger this callback to update an effect, call
+            sendLookAndFeelChange() on the component.
+
+            @see Component::setComponentEffect, Component::sendLookAndFeelChange
+        */
+        virtual void setComponentEffectForBubbleComponent (BubbleComponent& bubbleComponent) = 0;
     };
 
     //==============================================================================
     /** @internal */
     void paint (Graphics&) override;
+    /** @internal */
+    void lookAndFeelChanged() override;
 
 protected:
     //==============================================================================
@@ -178,7 +197,6 @@ private:
     Rectangle<int> content;
     Point<int> arrowTip;
     int allowablePlacements;
-    DropShadowEffect shadow;
 
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BubbleComponent)
 };