JUCE/extras/Projucer/Source/ComponentEditor/PaintElements/jucer_PaintElementRoundedRectangle.h

/*
  ==============================================================================

   This file is part of the JUCE framework.
   Copyright (c) Raw Material Software Limited

   JUCE is an open source framework subject to commercial or open source
   licensing.

   By downloading, installing, or using the JUCE framework, or combining the
   JUCE framework with any other source code, object code, content or any other
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   Or:

   You may also use this code under the terms of the AGPLv3:
   https://www.gnu.org/licenses/agpl-3.0.en.html

   THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
   WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.

  ==============================================================================
*/

#pragma once

#include "jucer_ColouredElement.h"
#include "../jucer_UtilityFunctions.h"

//==============================================================================
class PaintElementRoundedRectangle  : public ColouredElement
{
public:
    PaintElementRoundedRectangle (PaintRoutine* pr)
        : ColouredElement (pr, "Rounded Rectangle", true, false)
    {
        cornerSize = 10.0;
    }

    void draw (Graphics& g, const ComponentLayout* layout, const Rectangle<int>& parentArea) override
    {
        double x, y, w, h;
        position.getRectangleDouble (x, y, w, h, parentArea, layout);

        fillType.setFillType (g, getDocument(), parentArea);
        g.fillRoundedRectangle ((float) x, (float) y, (float) w, (float) h, (float) cornerSize);

        if (isStrokePresent)
        {
            strokeType.fill.setFillType (g, getDocument(), parentArea);

            g.drawRoundedRectangle ((float) x, (float) y, (float) w, (float) h, (float) cornerSize,
                                    getStrokeType().stroke.getStrokeThickness());
        }
    }

    void getEditableProperties (Array<PropertyComponent*>& props, bool multipleSelected) override
    {
        props.add (new CornerSizeProperty (this));

        ColouredElement::getEditableProperties (props, multipleSelected);

        props.add (new ShapeToPathProperty (this));
    }

    //==============================================================================
    class SetCornerSizeAction   : public PaintElementUndoableAction <PaintElementRoundedRectangle>
    {
    public:
        SetCornerSizeAction (PaintElementRoundedRectangle* const element, const double newSize_)
            : PaintElementUndoableAction <PaintElementRoundedRectangle> (element),
              newSize (newSize_)
        {
            oldSize = element->getCornerSize();
        }

        bool perform() override
        {
            showCorrectTab();
            getElement()->setCornerSize (newSize, false);
            return true;
        }

        bool undo() override
        {
            showCorrectTab();
            getElement()->setCornerSize (oldSize, false);
            return true;
        }

    private:
        double newSize, oldSize;
    };

    void setCornerSize (const double newSize, const bool undoable)
    {
        if (! approximatelyEqual (newSize, cornerSize))
        {
            if (undoable)
            {
                perform (new SetCornerSizeAction (this, newSize),
                         "Change rounded rectangle corner size");
            }
            else
            {
                cornerSize = newSize;
                changed();
            }
        }
    }

    double getCornerSize() const noexcept                         { return cornerSize; }

    //==============================================================================
    void fillInGeneratedCode (GeneratedCode& code, String& paintMethodCode) override
    {
        if (fillType.isInvisible() && (strokeType.isInvisible() || ! isStrokePresent))
            return;

        String x, y, w, h, s;
        positionToCode (position, code.document->getComponentLayout(), x, y, w, h);

        s << "{\n"
          << "    float x = " << castToFloat (x) << ", y = " << castToFloat (y) << ", "
          <<           "width = " << castToFloat (w) << ", height = " << castToFloat (h) << ";\n";

        if (! fillType.isInvisible())
            s << "    " << fillType.generateVariablesCode ("fill");

        if (isStrokePresent && ! strokeType.isInvisible())
            s << "    " << strokeType.fill.generateVariablesCode ("stroke");

        s << "    //[UserPaintCustomArguments] Customize the painting arguments here..\n"
          << customPaintCode
          << "    //[/UserPaintCustomArguments]\n";

        if (! fillType.isInvisible())
        {
            s << "    ";
            fillType.fillInGeneratedCode ("fill", position, code, s);
            s << "    g.fillRoundedRectangle (x, y, width, height, " << CodeHelpers::floatLiteral (cornerSize, 3)  << ");\n";
        }

        if (isStrokePresent && ! strokeType.isInvisible())
        {
            s << "    ";
            strokeType.fill.fillInGeneratedCode ("stroke", position, code, s);
            s << "    g.drawRoundedRectangle (x, y, width, height, " << CodeHelpers::floatLiteral (cornerSize, 3)
              << ", " << CodeHelpers::floatLiteral (strokeType.stroke.getStrokeThickness(), 3) << ");\n";
        }

        s << "}\n\n";

        paintMethodCode += s;
    }

    void applyCustomPaintSnippets (StringArray& snippets) override
    {
        customPaintCode.clear();

        if (! snippets.isEmpty() && (! fillType.isInvisible() || (isStrokePresent && ! strokeType.isInvisible())))
        {
            customPaintCode = snippets[0];
            snippets.remove (0);
        }
    }

    static const char* getTagName() noexcept        { return "ROUNDRECT"; }

    XmlElement* createXml() const override
    {
        XmlElement* const e = new XmlElement (getTagName());

        position.applyToXml (*e);
        e->setAttribute ("cornerSize", cornerSize);
        addColourAttributes (e);

        return e;
    }

    bool loadFromXml (const XmlElement& xml) override
    {
        if (xml.hasTagName (getTagName()))
        {
            position.restoreFromXml (xml, position);
            cornerSize = xml.getDoubleAttribute ("cornerSize", 10.0);
            loadColourAttributes (xml);

            return true;
        }

        jassertfalse;
        return false;
    }

    void convertToPath()
    {
        double x, y, w, h;
        getCurrentAbsoluteBoundsDouble (x, y, w, h);

        Path path;
        path.addRoundedRectangle ((float) x, (float) y, (float) w, (float) h, (float) cornerSize);

        convertToNewPathElement (path);
    }

private:
    double cornerSize;
    String customPaintCode;

    //==============================================================================
    class CornerSizeProperty  : public SliderPropertyComponent,
                                private juce::ChangeListener
    {
    public:
        CornerSizeProperty (PaintElementRoundedRectangle* const owner_)
            : SliderPropertyComponent ("corner size", 1.0, 200.0, 0.5, 0.4),
              owner (owner_)
        {
            owner->getDocument()->addChangeListener (this);
        }

        ~CornerSizeProperty() override
        {
            owner->getDocument()->removeChangeListener (this);
        }

        void setValue (double newValue) override
        {
            owner->getDocument()->getUndoManager().undoCurrentTransactionOnly();

            owner->setCornerSize (newValue, true);
        }

        double getValue() const override { return owner->getCornerSize(); }

    private:
        void changeListenerCallback (ChangeBroadcaster*) override { refresh(); }

        PaintElementRoundedRectangle* const owner;
    };

    //==============================================================================
    class ShapeToPathProperty  : public ButtonPropertyComponent
    {
    public:
        ShapeToPathProperty (PaintElementRoundedRectangle* const e)
            : ButtonPropertyComponent ("path", false),
              element (e)
        {
        }

        void buttonClicked() override
        {
            element->convertToPath();
        }

        String getButtonText() const override
        {
            return "convert to a path";
        }

    private:
        PaintElementRoundedRectangle* const element;
    };
};