text: /*
    ==============================================================================
  
     This file is part of the JUCE library.
     Copyright (c) 2020 - Raw Material Software Limited
  
     JUCE is an open source library subject to commercial or open-source
     licensing.
  
     By using JUCE, you agree to the terms of both the JUCE 6 End-User License
     Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
  
     End User License Agreement: www.juce.com/juce-6-licence
     Privacy Policy: www.juce.com/juce-privacy-policy
  
     Or: You may also use this code under the terms of the GPL v3 (see
     www.gnu.org/licenses).
  
     JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
     EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
     DISCLAIMED.
  
    ==============================================================================
  */
  
  namespace juce
  {
  
  //==============================================================================
  /**
      A component that acts as one of the vertical or horizontal bars you see being
      used to resize panels in a window.
  
      One of these acts with a StretchableLayoutManager to resize the other components.
  
      @see StretchableLayoutManager
  
      @tags{GUI}
  */
  class JUCE_API  StretchableLayoutResizerBar  : public Component
  {
  public:
      //==============================================================================
      /** Creates a resizer bar for use on a specified layout.
  
          @param layoutToUse          the layout that will be affected when this bar
                                      is dragged
          @param itemIndexInLayout    the item index in the layout that corresponds to
                                      this bar component. You'll need to set up the item
                                      properties in a suitable way for a divider bar, e.g.
                                      for an 8-pixel wide bar which, you could call
                                      myLayout->setItemLayout (barIndex, 8, 8, 8)
          @param isBarVertical        true if it's an upright bar that you drag left and
                                      right; false for a horizontal one that you drag up and
                                      down
      */
      StretchableLayoutResizerBar (StretchableLayoutManager* layoutToUse,
                                   int itemIndexInLayout,
                                   bool isBarVertical);
  
      /** Destructor. */
      ~StretchableLayoutResizerBar() override;
  
      //==============================================================================
      /** This is called when the bar is dragged.
  
          This method must update the positions of any components whose position is
          determined by the StretchableLayoutManager, because they might have just
          moved.
  
          The default implementation calls the resized() method of this component's
          parent component, because that's often where you're likely to apply the
          layout, but it can be overridden for more specific needs.
      */
      virtual void hasBeenMoved();
  
      //==============================================================================
      /** This abstract base class is implemented by LookAndFeel classes. */
      struct JUCE_API  LookAndFeelMethods
      {
          virtual ~LookAndFeelMethods() = default;
  
          virtual void drawStretchableLayoutResizerBar (Graphics&, int w, int h,
                                                        bool isVerticalBar, bool isMouseOver, bool isMouseDragging) = 0;
      };
  
      //==============================================================================
      /** @internal */
      void paint (Graphics&) override;
      /** @internal */
      void mouseDown (const MouseEvent&) override;
      /** @internal */
      void mouseDrag (const MouseEvent&) override;
  
  
  private:
      //==============================================================================
      StretchableLayoutManager* layout;
      int itemIndex, mouseDownPos;
      bool isVertical;
  
      JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (StretchableLayoutResizerBar)
  };
  
  } // namespace juce
  