// 11 march 2018
extern "C" {
#include "../common/attrstr.h"
}

// opentype.cpp
extern IDWriteTypography *uiprivOpenTypeFeaturesToIDWriteTypography(const uiOpenTypeFeatures *otf);

// fontmatch.cpp
extern DWRITE_FONT_WEIGHT uiprivWeightToDWriteWeight(uiTextWeight w);
extern DWRITE_FONT_STYLE uiprivItalicToDWriteStyle(uiTextItalic i);
extern DWRITE_FONT_STRETCH uiprivStretchToDWriteStretch(uiTextStretch s);
extern void uiprivFontDescriptorFromIDWriteFont(IDWriteFont *font, uiFontDescriptor *uidesc);

// attrstr.cpp
extern void uiprivAttributedStringApplyAttributesToDWriteTextLayout(uiDrawTextLayoutParams *p, IDWriteTextLayout *layout, std::vector<backgroundFunc> **backgroundFuncs);

// drawtext.cpp
class drawingEffectsAttr : public IUnknown {
	ULONG refcount;

	bool hasColor;
	double r;
	double g;
	double b;
	double a;

	bool hasUnderline;
	uiUnderline u;

	bool hasUnderlineColor;
	double ur;
	double ug;
	double ub;
	double ua;
public:
	textDrawingEffect();

	// IUnknown
	virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject);
	virtual ULONG STDMETHODCALLTYPE AddRef(void);
	virtual ULONG STDMETHODCALLTYPE Release(void);

	void setColor(double r, double g, double b, double a);
	void setUnderline(uiUnderline u);
	void setUnderlineColor(double r, double g, double b, double a);
	HRESULT draw(TODO);
};