PaddedComponent.h

#pragma once
#include "juce_gui_basics/juce_gui_basics.h"

/*
 * A couple basic helper functions to help components
 * deal with concepts like drop shadows
 *
 * The main point is to allow "bleed" around the normal content bounds
 *
 *           getLocalBounds()
 *  -----------------------------------
 *  |             paddingY            |
 *  |   ---------------------------   |
 *  |   |                         |   |
 *  |   |    getContentBounds()   |  <--- paddingX
 *  |   |                         |   |
 *  |   ---------------------------   |
 *  |                                 |
 *  |----------------------------------
 *
 */

class PaddedComponent : public juce::Component
{
public:
    explicit PaddedComponent (juce::String userFacingName = juce::String())
    {
        // may as well, makes it visible in the inspector
        setName (userFacingName);
    };

    // Achtung: JUCE is NOT like CSS padding, goes left, top, right, bottom
    void setBoundsAndPadding (juce::Rectangle<int> bounds, int l, int t, int r, int b)
    {
        getProperties().set ("paddingLeft", l);
        getProperties().set ("paddingRight", r);
        getProperties().set ("paddingTop", t);
        getProperties().set ("paddingBottom", b);
        setBounds (bounds.getX() - l, bounds.getY() - t, bounds.getWidth() + l + r, bounds.getHeight() + t + b);
    }

    void setBoundsAndPadding (juce::Rectangle<int> newBounds, int newPaddingX, int newPaddingY)
    {
        setBoundsAndPadding (newBounds, newPaddingX, newPaddingY, newPaddingX, newPaddingY);
    }

    void setBoundsAndPadding (juce::Rectangle<int> newBounds, int newPadding)
    {
        setBoundsAndPadding (newBounds, newPadding, newPadding);
    }

    /*
     * This is when you are passing bounds that include the padding
     * getLocalBounds is the bounds passed in
     * getContentBounds is reduced by the specified padding
     */
    // Achtung: This is NOT like CSS padding...
    void setBoundsReducedByPadding (juce::Rectangle<int> newBounds, int l, int t, int r, int b)
    {
        getProperties().set ("paddingLeft", l);
        getProperties().set ("paddingRight", r);
        getProperties().set ("paddingTop", t);
        getProperties().set ("paddingBottom", b);
        setBounds (newBounds);
    }

    void setBoundsReducedByPadding (juce::Rectangle<int> newBounds, int newPaddingX, int newPaddingY)
    {
        setBoundsReducedByPadding (newBounds, newPaddingX, newPaddingY, newPaddingX, newPaddingY);
    }

    void setBoundsReducedByPadding (juce::Rectangle<int> newBounds, int newPadding)
    {
        setBoundsReducedByPadding (newBounds, newPadding, newPadding);
    }

    int getContentWidth()
    {
        return getWidth() - (int) getProperties().getWithDefault ("paddingLeft", 0) - (int) getProperties().getWithDefault ("paddingRight", 0);
    }

    juce::Rectangle<int> getContentBounds()
    {
        auto bounds = getLocalBounds();
        auto newWidth = bounds.getWidth() - paddingLeft() - paddingRight();
        auto newHeight = bounds.getHeight() - paddingTop() - paddingBottom();
        return { bounds.getX() + paddingLeft(), bounds.getY() + paddingTop(), newWidth, newHeight };
    }


    // gives the parent's coordinate for the content bounds (not the component bounds)
    juce::Rectangle<int> getContentBoundsInParent()
    {
        auto p = getBoundsInParent();
        return { p.getX() + paddingLeft(), p.getY() + paddingTop(), p.getWidth() - paddingLeft() - paddingRight(), p.getHeight() - paddingTop() - paddingBottom() };
    }

    inline int paddingLeft() { return (int) getProperties().getWithDefault ("paddingLeft", 0); }
    inline int paddingTop() { return (int) getProperties().getWithDefault ("paddingTop", 0); }
    inline int paddingRight() { return (int) getProperties().getWithDefault ("paddingRight", 0); }
    inline int paddingBottom() { return (int) getProperties().getWithDefault ("paddingBottom", 0); }

private:
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PaddedComponent)
};