JUCE/extras/Projucer/Source/Project/UI/jucer_ContentViewComponents.h

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

   This file is part of the JUCE 7 technical preview.
   Copyright (c) 2022 - Raw Material Software Limited

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For the technical preview this file cannot be licensed commercially.

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

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

#pragma once

#include "../../Utility/UI/PropertyComponents/jucer_LabelPropertyComponent.h"

//==============================================================================
struct ContentViewHeader    : public Component
{
    ContentViewHeader (String headerName, Icon headerIcon)
        : name (headerName), icon (headerIcon)
    {
        setTitle (name);
    }

    void paint (Graphics& g) override
    {
        g.fillAll (findColour (contentHeaderBackgroundColourId));

        auto bounds = getLocalBounds().reduced (20, 0);

        icon.withColour (Colours::white).draw (g, bounds.toFloat().removeFromRight (30), false);

        g.setColour (Colours::white);
        g.setFont (Font (18.0f));
        g.drawFittedText (name, bounds, Justification::centredLeft, 1);
    }

    String name;
    Icon icon;
};

//==============================================================================
class ListBoxHeader    : public Component
{
public:
    ListBoxHeader (Array<String> columnHeaders)
    {
        for (auto s : columnHeaders)
        {
            addAndMakeVisible (headers.add (new Label (s, s)));
            widths.add (1.0f / (float) columnHeaders.size());
        }

        setSize (200, 40);
    }

    ListBoxHeader (Array<String> columnHeaders, Array<float> columnWidths)
    {
        jassert (columnHeaders.size() == columnWidths.size());

        auto index = 0;
        for (auto s : columnHeaders)
        {
            addAndMakeVisible (headers.add (new Label (s, s)));
            widths.add (columnWidths.getUnchecked (index++));
        }

        recalculateWidths();

        setSize (200, 40);
    }

    void resized() override
    {
        auto bounds = getLocalBounds();
        auto width = bounds.getWidth();

        auto index = 0;
        for (auto h : headers)
        {
            auto headerWidth = roundToInt ((float) width * widths.getUnchecked (index));
            h->setBounds (bounds.removeFromLeft (headerWidth));
            ++index;
        }
    }

    void setColumnHeaderWidth (int index, float proportionOfWidth)
    {
        if (! (isPositiveAndBelow (index, headers.size()) && isPositiveAndNotGreaterThan (proportionOfWidth, 1.0f)))
        {
            jassertfalse;
            return;
        }

        widths.set (index, proportionOfWidth);
        recalculateWidths (index);
    }

    int getColumnX (int index)
    {
        auto prop = 0.0f;
        for (int i = 0; i < index; ++i)
            prop += widths.getUnchecked (i);

        return roundToInt (prop * (float) getWidth());
    }

    float getProportionAtIndex (int index)
    {
        jassert (isPositiveAndBelow (index, widths.size()));
        return widths.getUnchecked (index);
    }

private:
    OwnedArray<Label> headers;
    Array<float> widths;

    void recalculateWidths (int indexToIgnore = -1)
    {
        auto total = 0.0f;

        for (auto w : widths)
            total += w;

        if (total == 1.0f)
            return;

        auto diff = 1.0f - total;
        auto amount = diff / static_cast<float> (indexToIgnore == -1 ? widths.size() : widths.size() - 1);

        for (int i = 0; i < widths.size(); ++i)
        {
            if (i != indexToIgnore)
            {
                auto val = widths.getUnchecked (i);
                widths.set (i, val + amount);
            }
        }
    }
};

//==============================================================================
class InfoButton  : public Button
{
public:
    InfoButton (const String& infoToDisplay = {})
        : Button ({})
    {
        setTitle ("Info");

        if (infoToDisplay.isNotEmpty())
            setInfoToDisplay (infoToDisplay);

        setSize (20, 20);
    }

    void paintButton (Graphics& g, bool isMouseOverButton, bool isButtonDown) override
    {
        auto bounds = getLocalBounds().toFloat().reduced (2);
        auto& icon = getIcons().info;

        g.setColour (findColour (treeIconColourId).withMultipliedAlpha (isMouseOverButton || isButtonDown ? 1.0f : 0.5f));

        if (isButtonDown)
            g.fillEllipse (bounds);
        else
            g.fillPath (icon, RectanglePlacement (RectanglePlacement::centred)
                        .getTransformToFit (icon.getBounds(), bounds));
    }

    void clicked() override
    {
        auto w = std::make_unique<InfoWindow> (info);
        w->setSize (width, w->getHeight() * numLines + 10);

        CallOutBox::launchAsynchronously (std::move (w), getScreenBounds(), nullptr);
    }

    using Button::clicked;

    void setInfoToDisplay (const String& infoToDisplay)
    {
        if (infoToDisplay.isNotEmpty())
        {
            info = infoToDisplay;

            auto stringWidth = roundToInt (Font (14.0f).getStringWidthFloat (info));
            width = jmin (300, stringWidth);

            numLines += static_cast<int> (stringWidth / width);

            setHelpText (info);
        }
    }

    void setAssociatedComponent (Component* comp)    { associatedComponent = comp; }
    Component* getAssociatedComponent()              { return associatedComponent; }

private:
    String info;
    Component* associatedComponent = nullptr;
    int width;
    int numLines = 1;

    //==============================================================================
    struct InfoWindow    : public Component
    {
        InfoWindow (const String& s)
            : stringToDisplay (s)
        {
            setSize (150, 14);
        }

        void paint (Graphics& g) override
        {
            g.fillAll (findColour (secondaryBackgroundColourId));

            g.setColour (findColour (defaultTextColourId));
            g.setFont (Font (14.0f));
            g.drawFittedText (stringToDisplay, getLocalBounds(), Justification::centred, 15, 0.75f);
        }

        String stringToDisplay;
    };

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (InfoButton)
};

//==============================================================================
class PropertyGroupComponent  : public Component,
                                private TextPropertyComponent::Listener
{
public:
    PropertyGroupComponent (String name, Icon icon, String desc = {})
        : header (name, icon),
          description (desc)
    {
        addAndMakeVisible (header);
    }

    void setProperties (const PropertyListBuilder& newProps)
    {
        clearProperties();

        if (description.isNotEmpty())
            properties.push_back (std::make_unique<LabelPropertyComponent> (description, 16, Font (16.0f),
                                                                            Justification::centredLeft));

        for (auto* comp : newProps.components)
            properties.push_back (std::unique_ptr<PropertyComponent> (comp));

        for (auto& prop : properties)
        {
            const auto propertyTooltip = prop->getTooltip();

            if (propertyTooltip.isNotEmpty())
            {
                // set the tooltip to empty so it only displays when its button is clicked
                prop->setTooltip ({});

                auto infoButton = std::make_unique<InfoButton> (propertyTooltip);
                infoButton->setAssociatedComponent (prop.get());

                auto propertyAndInfoWrapper = std::make_unique<PropertyAndInfoWrapper> (*prop, *infoButton.get());
                addAndMakeVisible (propertyAndInfoWrapper.get());
                propertyComponentsWithInfo.push_back (std::move (propertyAndInfoWrapper));

                infoButtons.push_back (std::move (infoButton));
            }
            else
            {
                addAndMakeVisible (prop.get());
            }

            if (auto* multiChoice = dynamic_cast<MultiChoicePropertyComponent*> (prop.get()))
                multiChoice->onHeightChange = [this] { updateSize(); };

            if (auto* text = dynamic_cast<TextPropertyComponent*> (prop.get()))
                if (text->isTextEditorMultiLine())
                    text->addListener (this);
        }
    }

    int updateSize (int x, int y, int width)
    {
        header.setBounds (0, 0, width, headerSize);
        auto height = header.getBottom() + 10;

        for (auto& pp : properties)
        {
            const auto propertyHeight = jmax (pp->getPreferredHeight(), getApproximateLabelHeight (*pp));

            auto iter = std::find_if (propertyComponentsWithInfo.begin(), propertyComponentsWithInfo.end(),
                                      [&pp] (const std::unique_ptr<PropertyAndInfoWrapper>& w) { return &w->propertyComponent == pp.get(); });

            if (iter != propertyComponentsWithInfo.end())
                (*iter)->setBounds (0, height, width - 10, propertyHeight);
            else
                pp->setBounds (40, height, width - 50, propertyHeight);

            if (shouldResizePropertyComponent (pp.get()))
                resizePropertyComponent (pp.get());

            height += pp->getHeight() + 10;
        }

        height += 16;

        setBounds (x, y, width, jmax (height, getParentHeight()));

        return height;
    }

    void paint (Graphics& g) override
    {
        g.fillAll (findColour (secondaryBackgroundColourId));
    }

    const std::vector<std::unique_ptr<PropertyComponent>>& getProperties() const noexcept
    {
        return properties;
    }

    void clearProperties()
    {
        propertyComponentsWithInfo.clear();
        infoButtons.clear();
        properties.clear();
    }

private:
    //==============================================================================
    struct PropertyAndInfoWrapper  : public Component
    {
        PropertyAndInfoWrapper (PropertyComponent& c, InfoButton& i)
            : propertyComponent (c),
              infoButton (i)
        {
            setFocusContainerType (FocusContainerType::focusContainer);
            setTitle (propertyComponent.getName());

            addAndMakeVisible (propertyComponent);
            addAndMakeVisible (infoButton);
        }

        void resized() override
        {
            auto bounds = getLocalBounds();

            bounds.removeFromLeft (40);
            bounds.removeFromRight (10);

            propertyComponent.setBounds (bounds);
            infoButton.setCentrePosition (20, bounds.getHeight() / 2);
        }

        PropertyComponent& propertyComponent;
        InfoButton& infoButton;
    };

    //==============================================================================
    void textPropertyComponentChanged (TextPropertyComponent* comp) override
    {
        auto fontHeight = [comp]
        {
            Label tmpLabel;
            return comp->getLookAndFeel().getLabelFont (tmpLabel).getHeight();
        }();

        auto lines = StringArray::fromLines (comp->getText());

        comp->setPreferredHeight (jmax (100, 10 + roundToInt (fontHeight * (float) lines.size())));

        updateSize();
    }

    void updateSize()
    {
        updateSize (getX(), getY(), getWidth());

        if (auto* parent = getParentComponent())
            parent->parentSizeChanged();
    }

    bool shouldResizePropertyComponent (PropertyComponent* p)
    {
        if (auto* textComp = dynamic_cast<TextPropertyComponent*> (p))
            return ! textComp->isTextEditorMultiLine();

        return (dynamic_cast<ChoicePropertyComponent*>  (p) != nullptr
             || dynamic_cast<ButtonPropertyComponent*>  (p) != nullptr
             || dynamic_cast<BooleanPropertyComponent*> (p) != nullptr);
    }

    void resizePropertyComponent (PropertyComponent* pp)
    {
        for (auto i = pp->getNumChildComponents() - 1; i >= 0; --i)
        {
            auto* child = pp->getChildComponent (i);

            auto bounds = child->getBounds();
            child->setBounds (bounds.withSizeKeepingCentre (child->getWidth(), pp->getPreferredHeight()));
        }
    }

    static int getApproximateLabelHeight (const PropertyComponent& pp)
    {
        auto availableTextWidth = ProjucerLookAndFeel::getTextWidthForPropertyComponent (pp);

        if (availableTextWidth == 0)
            return 0;

        const auto font = ProjucerLookAndFeel::getPropertyComponentFont();
        const auto labelWidth = font.getStringWidthFloat (pp.getName());
        const auto numLines = (int) (labelWidth / (float) availableTextWidth) + 1;
        return (int) std::round ((float) numLines * font.getHeight() * 1.1f);
    }

    //==============================================================================
    static constexpr int headerSize = 40;

    std::vector<std::unique_ptr<PropertyComponent>> properties;
    std::vector<std::unique_ptr<InfoButton>> infoButtons;
    std::vector<std::unique_ptr<PropertyAndInfoWrapper>> propertyComponentsWithInfo;

    ContentViewHeader header;
    String description;

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PropertyGroupComponent)
};