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#pragma once
#include "../yg/color.hpp"
#include "../std/function.hpp"
#include "../std/shared_ptr.hpp"
#include "../geometry/rect2d.hpp"
class PaintEvent;
class ScreenBase;
namespace yg
{
namespace gl
{
class RenderContext;
}
class ResourceManager;
}
class WindowHandle;
class RenderPolicy
{
public:
typedef function<void(shared_ptr<PaintEvent>, ScreenBase const &, m2::RectD const &, m2::RectD const &, int)> TRenderFn;
private:
yg::Color m_bgColor;
shared_ptr<yg::ResourceManager> m_resourceManager;
shared_ptr<WindowHandle> m_windowHandle;
TRenderFn m_renderFn;
protected:
yg::Color const & bgColor() const;
shared_ptr<yg::ResourceManager> const & resourceManager() const;
shared_ptr<WindowHandle> const & windowHandle() const;
TRenderFn renderFn() const;
public:
/// constructor
RenderPolicy(shared_ptr<WindowHandle> const & windowHandle, TRenderFn const & renderFn);
virtual ~RenderPolicy() {}
/// starting frame
virtual void BeginFrame(shared_ptr<PaintEvent> const & e, ScreenBase const & s);
/// drawing single frame
virtual void DrawFrame(shared_ptr<PaintEvent> const & e, ScreenBase const & s) = 0;
/// ending frame
virtual void EndFrame(shared_ptr<PaintEvent> const & e, ScreenBase const & s);
/// processing resize request
virtual m2::RectI const OnSize(int w, int h);
/// initialize render policy
virtual void Initialize(shared_ptr<yg::gl::RenderContext> const & primaryContext,
shared_ptr<yg::ResourceManager> const & resourceManager) = 0;
/// reacting on navigation actions
/// @{
virtual void StartDrag(m2::PointD const & pt, double timeInSec);
virtual void DoDrag(m2::PointD const & pt, double timeInSec);
virtual void StopDrag(m2::PointD const & pt, double timeInSec);
virtual void StartScale(m2::PointD const & pt1, m2::PointD const & pt2, double timeInSec);
virtual void DoScale(m2::PointD const & pt1, m2::PointD const & pt2, double timeInSec);
virtual void StopScale(m2::PointD const & pt1, m2::PointD const & pt2, double timeInSec);
virtual void StartRotate(double a, double timeInSec);
virtual void DoRotate(double a, double timeInSec);
virtual void StopRotate(double a, double timeInSec);
/// @}
};
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