spk_push_button.hpp

#pragma once
 
#include "structure/design_pattern/spk_contract_provider.hpp"
#include "structure/widget/components/spk_nine_slice_background.hpp"
#include "structure/widget/components/spk_text_region.hpp"
#include "structure/widget/spk_widget.hpp"
 
namespace spk
{
    class PushButton : public spk::Widget
    {
    public:
        using Contract = spk::TContractProvider<>::Contract;
        using Job = spk::TContractProvider<>::Job;

        enum class State
        {
            Released,
            Pressed,
            Hovered,
            Both
        };
 
    private:
        struct Visual
        {
            NineSliceBackground background;
            TextRegion text;
        };
 
        Visual _released;
        Visual _pressed;
        Visual _hovered;
 
        bool _isPressed = false;
        bool _isHovered = false;
        bool _forceHovered = false;
 
        spk::TContractProvider<> _onClick;
 
        Visual &_visualForState(State p_state);
        const Visual &_visualForState(State p_state) const;
        void _applyGeometry();
 
    protected:
        void _onGeometryChange() override;
        void _onPaintEvent(spk::PaintEvent &p_event) override;
        void _onMousePressEvent(spk::MousePressEvent &p_event) override;
        void _onMouseReleaseEvent(spk::MouseReleaseEvent &p_event) override;
        void _onMouseDoubleClickEvent(spk::MouseDoubleClickEvent &p_event) override;
        void _onMouseMotionEvent(spk::MouseMotionEvent &p_event) override;
 
    public:
        PushButton(const std::wstring &p_name, spk::Widget *p_parent);

        void setVisualState(const State &p_state);
        void setForceHovered(bool p_force);

        Contract subscribe(const Job &p_job);

        void setTexture(const spk::SpriteSheet *p_spriteSheet, State p_state = State::Both);
        void setCornerSize(const spk::Vector2UInt &p_cornerSize, State p_state = State::Both);

        void setFont(spk::Font *p_font, State p_state = State::Both);
        void setFontSize(const spk::Font::Size &p_size, State p_state = State::Both);
        void setColors(const spk::Color &p_glyphColor, const spk::Color &p_outlineColor, State p_state = State::Both);
        void setText(const std::wstring &p_text, State p_state = State::Both);
        void setAlignment(HorizontalAlignment p_horizontalAlignment, VerticalAlignment p_verticalAlignment, State p_state = State::Both);

        const spk::SpriteSheet *texture(State p_state) const;
        const spk::Vector2UInt &cornerSize(State p_state) const;
        spk::Font *font(State p_state) const;
        const spk::Font::Size &fontSize(State p_state) const;
        const spk::Color &glyphColor(State p_state) const;
        const spk::Color &outlineColor(State p_state) const;
        const std::wstring &text(State p_state) const;
        HorizontalAlignment horizontalAlignment(State p_state) const;
        VerticalAlignment verticalAlignment(State p_state) const;
    };
}