button.h

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#ifndef ASW_MODULES_UI_BUTTON_H
#define ASW_MODULES_UI_BUTTON_H
 
#include <functional>
#include <optional>
#include <string>
 
#include "../types.h"
#include "context.h"
#include "widget.h"
 
namespace asw::ui {
 
class Button : public Widget {
public:
    Button()
    {
        focusable = true;
    }
 
    std::function<void()> on_click;
 
    void activate(Context& ctx) override;
 
    void draw(Context& ctx) override;
 
    float padding = 0.0f;
 
    asw::Font font;
 
    std::string text;
 
    asw::Texture texture;
 
    asw::Texture texture_hover;
 
    asw::Texture texture_pressed;
 
    asw::Texture texture_disabled;
 
    bool draw_background = true;
 
    std::optional<ButtonStyle> style;
 
    const ButtonStyle& get_style(const Context& ctx) const
    {
        return style ? *style : ctx.theme.button;
    }
 
    void set_texture(const asw::Texture& tex, bool auto_size = false);
 
    void set_images(const asw::Texture& normal, const asw::Texture& hover = nullptr,
        const asw::Texture& pressed = nullptr, const asw::Texture& disabled = nullptr,
        bool auto_size = true);
 
    void set_text(const std::string& t, bool auto_size = false);
 
    void measure(Context& ctx) override;
 
    void layout(Context& ctx) override;
 
protected:
    const asw::Texture& current_texture(const Context& ctx) const;
 
private:
    // set_text asked to fit the text, waiting for the theme font at layout
    bool _fit_text = false;
 
    void fit_text(const asw::Font& f);
};
 
} // namespace asw::ui
 
#endif // ASW_MODULES_UI_BUTTON_H