/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-privacy-policy

   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

#ifndef _WINDEF_
class HWND__; // Forward or never
typedef HWND__* HWND;
#endif

class Direct2DLowLevelGraphicsContext   : public LowLevelGraphicsContext
{
public:
    Direct2DLowLevelGraphicsContext (HWND);
    ~Direct2DLowLevelGraphicsContext();

    //==============================================================================
    bool isVectorDevice() const override { return false; }

    void setOrigin (Point<int>) override;
    void addTransform (const AffineTransform&) override;
    float getPhysicalPixelScaleFactor() override;
    bool clipToRectangle (const Rectangle<int>&) override;
    bool clipToRectangleList (const RectangleList<int>&) override;
    void excludeClipRectangle (const Rectangle<int>&) override;
    void clipToPath (const Path&, const AffineTransform&) override;
    void clipToImageAlpha (const Image&, const AffineTransform&) override;
    bool clipRegionIntersects (const Rectangle<int>&) override;
    Rectangle<int> getClipBounds() const override;
    bool isClipEmpty() const override;

    //==============================================================================
    void saveState() override;
    void restoreState() override;
    void beginTransparencyLayer (float opacity) override;
    void endTransparencyLayer() override;

    //==============================================================================
    void setFill (const FillType&) override;
    void setOpacity (float) override;
    void setInterpolationQuality (Graphics::ResamplingQuality) override;

    //==============================================================================
    void fillRect (const Rectangle<int>&, bool replaceExistingContents) override;
    void fillRect (const Rectangle<float>&) override;
    void fillRectList (const RectangleList<float>&) override;
    void fillPath (const Path&, const AffineTransform&) override;
    void drawImage (const Image& sourceImage, const AffineTransform&) override;

    //==============================================================================
    void drawLine (const Line<float>&) override;
    void setFont (const Font&) override;
    const Font& getFont() override;
    void drawGlyph (int glyphNumber, const AffineTransform&) override;
    bool drawTextLayout (const AttributedString&, const Rectangle<float>&) override;

    void resized();
    void clear();

    void start();
    void end();

    //==============================================================================
private:
    struct SavedState;

    HWND hwnd;

    SavedState* currentState;
    OwnedArray<SavedState> states;

    Rectangle<int> bounds;

    struct Pimpl;
    friend struct Pimpl;
    friend struct ContainerDeletePolicy<Pimpl>;
    ScopedPointer<Pimpl> pimpl;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Direct2DLowLevelGraphicsContext)
};

} // namespace juce
