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#pragma once
#include "pre.hpp"
#include "system_headers.hpp"
#include <functional>
#include <cassert>
#include "base.hpp"
#include "ui/ui_base.hpp"
#include "ui/d2d_util.hpp"
namespace cru::ui::render
{
/* About Render Object
*
* Render object is a concrete subclass of RenderObject class.
* It represents a painting action on a d2d render target. By
* overriding "Draw" virtual method, it can customize its painting
* action.
*/
struct IRenderHost : Interface
{
virtual void InvalidateRender() = 0;
};
class RenderObject : public Object
{
protected:
RenderObject() = default;
public:
RenderObject(const RenderObject& other) = delete;
RenderObject(RenderObject&& other) = delete;
RenderObject& operator=(const RenderObject& other) = delete;
RenderObject& operator=(RenderObject&& other) = delete;
~RenderObject() override = default;
virtual void Draw(ID2D1RenderTarget* render_target) = 0;
IRenderHost* GetRenderHost() const
{
return render_host_;
}
void SetRenderHost(IRenderHost* new_render_host);
protected:
virtual void OnRenderHostChanged(IRenderHost* old_render_host, IRenderHost* new_render_host);
void InvalidateRenderHost();
private:
IRenderHost* render_host_ = nullptr;
};
class StrokeRenderObject : public virtual RenderObject
{
protected:
StrokeRenderObject() = default;
public:
StrokeRenderObject(const StrokeRenderObject& other) = delete;
StrokeRenderObject(StrokeRenderObject&& other) = delete;
StrokeRenderObject& operator=(const StrokeRenderObject& other) = delete;
StrokeRenderObject& operator=(StrokeRenderObject&& other) = delete;
~StrokeRenderObject() override = default;
float GetStrokeWidth() const
{
return stroke_width_;
}
void SetStrokeWidth(float new_stroke_width);
Microsoft::WRL::ComPtr<ID2D1Brush> GetBrush() const
{
return brush_;
}
void SetBrush(Microsoft::WRL::ComPtr<ID2D1Brush> new_brush);
Microsoft::WRL::ComPtr<ID2D1StrokeStyle> GetStrokeStyle() const
{
return stroke_style_;
}
void SetStrokeStyle(Microsoft::WRL::ComPtr<ID2D1StrokeStyle> new_stroke_style);
private:
float stroke_width_ = 1.0f;
Microsoft::WRL::ComPtr<ID2D1Brush> brush_ = nullptr;
Microsoft::WRL::ComPtr<ID2D1StrokeStyle> stroke_style_ = nullptr;
};
class FillRenderObject : public virtual RenderObject
{
protected:
FillRenderObject() = default;
public:
FillRenderObject(const FillRenderObject& other) = delete;
FillRenderObject(FillRenderObject&& other) = delete;
FillRenderObject& operator=(const FillRenderObject& other) = delete;
FillRenderObject& operator=(FillRenderObject&& other) = delete;
~FillRenderObject() override = default;
Microsoft::WRL::ComPtr<ID2D1Brush> GetBrush() const
{
return brush_;
}
void SetBrush(Microsoft::WRL::ComPtr<ID2D1Brush> new_brush);
private:
Microsoft::WRL::ComPtr<ID2D1Brush> brush_ = nullptr;
};
namespace details
{
template <typename TShapeType>
class ShapeRenderObject : public virtual RenderObject
{
public:
using ShapeType = TShapeType;
protected:
ShapeRenderObject() = default;
public:
ShapeRenderObject(const ShapeRenderObject& other) = delete;
ShapeRenderObject& operator=(const ShapeRenderObject& other) = delete;
ShapeRenderObject(ShapeRenderObject&& other) = delete;
ShapeRenderObject& operator=(ShapeRenderObject&& other) = delete;
~ShapeRenderObject() override = default;
ShapeType GetShape() const
{
return shape_;
}
void SetShape(const ShapeType& new_shape)
{
if (new_shape == shape_)
return;
shape_ = new_shape;
InvalidateRenderHost();
}
private:
ShapeType shape_;
};
extern template class ShapeRenderObject<Rect>;
extern template class ShapeRenderObject<RoundedRect>;
extern template class ShapeRenderObject<Ellipse>;
}
using RectangleRenderObject = details::ShapeRenderObject<Rect>;
using RoundedRectangleRenderObject = details::ShapeRenderObject<RoundedRect>;
using EllipseRenderObject = details::ShapeRenderObject<Ellipse>;
namespace details
{
template<typename TShapeType, typename TD2D1ShapeType, void (ID2D1RenderTarget::*draw_function)(const TD2D1ShapeType&, ID2D1Brush*, float, ID2D1StrokeStyle*)>
class ShapeStrokeRenderObject : public ShapeRenderObject<TShapeType>, public StrokeRenderObject
{
public:
ShapeStrokeRenderObject() = default;
ShapeStrokeRenderObject(const ShapeStrokeRenderObject& other) = delete;
ShapeStrokeRenderObject& operator=(const ShapeStrokeRenderObject& other) = delete;
ShapeStrokeRenderObject(ShapeStrokeRenderObject&& other) = delete;
ShapeStrokeRenderObject& operator=(ShapeStrokeRenderObject&& other) = delete;
~ShapeStrokeRenderObject() = default;
protected:
void Draw(ID2D1RenderTarget* render_target) override
{
const auto brush = GetBrush();
if (brush != nullptr)
(render_target->*draw_function)(Convert(GetShape()), brush.Get(), GetStrokeWidth(), GetStrokeStyle().Get());
}
};
extern template ShapeStrokeRenderObject<Rect, D2D1_RECT_F, &ID2D1RenderTarget::DrawRectangle>;
extern template ShapeStrokeRenderObject<RoundedRect, D2D1_ROUNDED_RECT, &ID2D1RenderTarget::DrawRoundedRectangle>;
extern template ShapeStrokeRenderObject<Ellipse, D2D1_ELLIPSE, &ID2D1RenderTarget::DrawEllipse>;
}
using RectangleStrokeRenderObject = details::ShapeStrokeRenderObject<Rect, D2D1_RECT_F, &ID2D1RenderTarget::DrawRectangle>;
using RoundedRectangleStrokeRenderObject = details::ShapeStrokeRenderObject<RoundedRect, D2D1_ROUNDED_RECT, &ID2D1RenderTarget::DrawRoundedRectangle>;
using EllipseStrokeRenderObject = details::ShapeStrokeRenderObject<Ellipse, D2D1_ELLIPSE, &ID2D1RenderTarget::DrawEllipse>;
namespace details
{
template<typename TShapeType, typename TD2D1ShapeType, void (ID2D1RenderTarget::*fill_function)(const TD2D1ShapeType&, ID2D1Brush*)>
class ShapeFillRenderObject : public ShapeRenderObject<TShapeType>, public StrokeRenderObject
{
public:
ShapeFillRenderObject() = default;
ShapeFillRenderObject(const ShapeFillRenderObject& other) = delete;
ShapeFillRenderObject& operator=(const ShapeFillRenderObject& other) = delete;
ShapeFillRenderObject(ShapeFillRenderObject&& other) = delete;
ShapeFillRenderObject& operator=(ShapeFillRenderObject&& other) = delete;
~ShapeFillRenderObject() = default;
protected:
void Draw(ID2D1RenderTarget* render_target) override
{
const auto brush = GetBrush();
if (brush != nullptr)
(render_target->*fill_function)(Convert(GetShape()), brush.Get());
}
};
extern template ShapeFillRenderObject<Rect, D2D1_RECT_F, &ID2D1RenderTarget::FillRectangle>;
extern template ShapeFillRenderObject<RoundedRect, D2D1_ROUNDED_RECT, &ID2D1RenderTarget::FillRoundedRectangle>;
extern template ShapeFillRenderObject<Ellipse, D2D1_ELLIPSE, &ID2D1RenderTarget::FillEllipse>;
}
using RectangleFillRenderObject = details::ShapeFillRenderObject<Rect, D2D1_RECT_F, &ID2D1RenderTarget::FillRectangle>;
using RoundedRectangleFillRenderObject = details::ShapeFillRenderObject<RoundedRect, D2D1_ROUNDED_RECT, &ID2D1RenderTarget::FillRoundedRectangle>;
using EllipseFillRenderObject = details::ShapeFillRenderObject<Ellipse, D2D1_ELLIPSE, &ID2D1RenderTarget::FillEllipse>;
class CustomDrawHandlerRenderObject : public RenderObject
{
public:
using DrawHandler = std::function<void(ID2D1RenderTarget*)>;
CustomDrawHandlerRenderObject() = default;
CustomDrawHandlerRenderObject(const CustomDrawHandlerRenderObject& other) = delete;
CustomDrawHandlerRenderObject& operator=(const CustomDrawHandlerRenderObject& other) = delete;
CustomDrawHandlerRenderObject(CustomDrawHandlerRenderObject&& other) = delete;
CustomDrawHandlerRenderObject& operator=(CustomDrawHandlerRenderObject&& other) = delete;
~CustomDrawHandlerRenderObject() override = default;
DrawHandler GetDrawHandler() const
{
return draw_handler_;
}
void SetDrawHandler(DrawHandler new_draw_handler);
protected:
void Draw(ID2D1RenderTarget* render_target) override;
private:
DrawHandler draw_handler_{};
};
}
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