Renderer.h

// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <kiwano/base/Module.h>
#include <kiwano/render/Font.h>
#include <kiwano/render/GifImage.h>
#include <kiwano/render/TextStyle.h>
#include <kiwano/render/RenderContext.h>
#include <kiwano/platform/Window.h>
 
namespace kiwano
{
 
class KGE_API Renderer : public Module
{
public:
    static Renderer& GetInstance();
 
    virtual Color GetClearColor() const;
 
    Size GetOutputSize() const;
 
    RenderContext& GetContext();
 
    virtual void Resize(uint32_t width, uint32_t height) = 0;
 
    void SetClearColor(const Color& clear_color);
 
    void SetVSyncEnabled(bool enabled);
 
    void ResetResolutionWhenWindowResized(bool enabled);
 
    virtual void CreateTexture(Texture& texture, const String& file_path) = 0;
 
    virtual void CreateTexture(Texture& texture, const BinaryData& data) = 0;
 
    virtual void CreateTexture(Texture& texture, const PixelSize& size, const BinaryData& data, PixelFormat format) = 0;
 
    virtual void CreateGifImage(GifImage& gif, const String& file_path) = 0;
 
    virtual void CreateGifImage(GifImage& gif, const BinaryData& data) = 0;
 
    virtual void CreateGifImageFrame(GifImage::Frame& frame, const GifImage& gif, size_t frame_index) = 0;
 
    virtual void CreateFontCollection(Font& font, Vector<String>& family_names, const String& file_path) = 0;
 
    virtual void CreateFontCollection(Font& font, Vector<String>& family_names, const BinaryData& data) = 0;
 
    virtual void CreateTextLayout(TextLayout& layout, const String& content, const TextStyle& style) = 0;
 
    virtual void CreateLineShape(Shape& shape, const Point& begin_pos, const Point& end_pos) = 0;
 
    virtual void CreateRectShape(Shape& shape, const Rect& rect) = 0;
 
    virtual void CreateRoundedRectShape(Shape& shape, const Rect& rect, const Vec2& radius) = 0;
 
    virtual void CreateEllipseShape(Shape& shape, const Point& center, const Vec2& radius) = 0;
 
    virtual void CreateShapeSink(ShapeMaker& maker) = 0;
 
    virtual void CreateBrush(Brush& brush, const Color& color) = 0;
 
    virtual void CreateBrush(Brush& brush, const LinearGradientStyle& style) = 0;
 
    virtual void CreateBrush(Brush& brush, const RadialGradientStyle& style) = 0;
 
    virtual void CreateBrush(Brush& brush, TexturePtr texture) = 0;
 
    virtual void CreateStrokeStyle(StrokeStyle& stroke_style) = 0;
 
    virtual RenderContextPtr CreateTextureRenderContext(TexturePtr texture, const PixelSize& desired_size) = 0;
 
public:
    virtual void Clear() = 0;
 
    virtual void Present() = 0;
 
    virtual void MakeContextForWindow(WindowPtr window) = 0;
 
    virtual void Destroy();
 
    void HandleEvent(EventModuleContext& ctx) override;
 
protected:
    Renderer();
 
protected:
    bool             vsync_;
    bool             auto_reset_resolution_;
    Color            clear_color_;
    Size             output_size_;
    RenderContextPtr render_ctx_;
};
 
inline RenderContext& Renderer::GetContext()
{
    return *render_ctx_;
}
 
inline Size Renderer::GetOutputSize() const
{
    return output_size_;
}
 
inline Color Renderer::GetClearColor() const
{
    return clear_color_;
}
 
}  // namespace kiwano