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#pragma once
#include "graphics/overlay_element.hpp"
#include "graphics/color.hpp"
#include "graphics/font_desc.hpp"
#include "std/map.hpp"
namespace graphics
{
namespace gl
{
class OverlayRenderer;
}
}
namespace gui
{
class Controller;
class Element : public graphics::OverlayElement
{
public:
enum EState
{
EInactive = 0,
EActive,
EPressed,
ESelected
};
protected:
Controller * m_controller;
private:
EState m_state;
mutable map<EState, graphics::FontDesc> m_fonts;
mutable map<EState, graphics::Color> m_colors;
public:
typedef OverlayElement::Params Params;
Element(Params const & p);
void setState(EState state);
EState state() const;
virtual void setFont(EState state, graphics::FontDesc const & font);
graphics::FontDesc const & font(EState state) const;
virtual void setColor(EState state, graphics::Color const & c);
graphics::Color const & color(EState state) const;
/// Implement this method to handle single tap on the GUI element.
//@{
virtual bool onTapStarted(m2::PointD const & pt);
virtual bool onTapMoved(m2::PointD const & pt);
virtual bool onTapEnded(m2::PointD const & pt);
virtual bool onTapCancelled(m2::PointD const & pt);
//@}
/// Invalidate the rendering system to redraw the gui elements.
void invalidate();
/// obtain @see VisualScale
double visualScale() const;
/// This method is called to cache visual appearance of gui::Element for fast rendering.
/// It should be called after layout() is calculated properly.
virtual void cache();
/// This method is called upon renderPolicy destruction and should clean
/// all rendering-related resources, p.e. displayLists.
virtual void purge();
/// This method is called in each frame and should be overriden if the
/// element wants to update it's internal state.
virtual void update();
/// This method is called after gui::Controller::SetRenderParams to
/// perform layout calculations which might depends on RenderParams.
/// It should be called when isDirtyLayout is set to true (visual parameters of object is changed).
virtual void layout();
/// Set the parent controller for this element. Should be called for all inner Elemen's too.
virtual void setController(Controller * controller);
/// Check if the layout of element is dirty and re-layout element if needed.
/// Used in a "lazy" layout/cache strategy (called before actual drawing).
void checkDirtyLayout() const;
/// @name Override from OverlayElement.
//@{
void draw(graphics::OverlayRenderer * r, math::Matrix<double, 3, 3> const & m) const;
double priority() const;
void setTransformation(const math::Matrix<double, 3, 3> & m);
//@}
};
}
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