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#pragma once
#include "guievent.h"
#include "pixelbuffer.h"
#include "notifier.h"
#include "layout.h"
#include "canvas.h"
#include <vector>
namespace GUI
{
class ImageCache;
class Window;
class Widget
: public Listener
, public LayoutItem
, public Canvas
{
friend class Painter;
public:
Widget(Widget* parent);
virtual ~Widget();
virtual void show();
virtual void hide();
void setVisible(bool visible);
virtual bool visible() const;
void redraw();
virtual void resize(std::size_t width, std::size_t height) override;
virtual void move(int x, int y) override;
virtual int x() const override;
virtual int y() const override;
virtual std::size_t width() const override;
virtual std::size_t height() const override;
PixelBufferAlpha& GetPixelBuffer() override;
virtual bool isFocusable() { return false; }
virtual bool catchMouse() { return false; }
void addChild(Widget* widget);
void removeChild(Widget* widget);
void reparent(Widget* parent);
virtual void repaintEvent(RepaintEvent* repaintEvent) {}
virtual void mouseMoveEvent(MouseMoveEvent* mouseMoveEvent) {}
virtual void buttonEvent(ButtonEvent* buttonEvent) {}
virtual void scrollEvent(ScrollEvent* scrollEvent) {}
virtual void keyEvent(KeyEvent* keyEvent) {}
virtual void mouseLeaveEvent() {}
virtual void mouseEnterEvent() {}
virtual ImageCache& getImageCache();
Widget* find(int x, int y);
virtual Window* window();
std::vector<PixelBufferAlpha*> getPixelBuffers();
bool hasKeyboardFocus();
Notifier<std::size_t, std::size_t> sizeChangeNotifier;
Notifier<int, int> positionChangeNotifier;
protected:
friend class EventHandler;
virtual std::size_t translateToWindowX();
virtual std::size_t translateToWindowY();
PixelBufferAlpha pixbuf{0,0};
std::vector<Widget*> children;
Widget* parent = nullptr;
Window* _window = nullptr;
int _x{0};
int _y{0};
std::size_t _width{0};
std::size_t _height{0};
bool _visible{true};
bool dirty{true};
};
}
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