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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSurfaceProps_DEFINED
#define SkSurfaceProps_DEFINED
#include "SkTypes.h"
/**
* Description of how the LCD strips are arranged for each pixel. If this is unknown, or the
* pixels are meant to be "portable" and/or transformed before showing (e.g. rotated, scaled)
* then use kUnknown_SkPixelGeometry.
*/
enum SkPixelGeometry {
kUnknown_SkPixelGeometry,
kRGB_H_SkPixelGeometry,
kBGR_H_SkPixelGeometry,
kRGB_V_SkPixelGeometry,
kBGR_V_SkPixelGeometry,
};
// Returns true iff geo is a known geometry and is RGB.
static inline bool SkPixelGeometryIsRGB(SkPixelGeometry geo) {
return kRGB_H_SkPixelGeometry == geo || kRGB_V_SkPixelGeometry == geo;
}
// Returns true iff geo is a known geometry and is BGR.
static inline bool SkPixelGeometryIsBGR(SkPixelGeometry geo) {
return kBGR_H_SkPixelGeometry == geo || kBGR_V_SkPixelGeometry == geo;
}
// Returns true iff geo is a known geometry and is horizontal.
static inline bool SkPixelGeometryIsH(SkPixelGeometry geo) {
return kRGB_H_SkPixelGeometry == geo || kBGR_H_SkPixelGeometry == geo;
}
// Returns true iff geo is a known geometry and is vertical.
static inline bool SkPixelGeometryIsV(SkPixelGeometry geo) {
return kRGB_V_SkPixelGeometry == geo || kBGR_V_SkPixelGeometry == geo;
}
/**
* Describes properties and constraints of a given SkSurface. The rendering engine can parse these
* during drawing, and can sometimes optimize its performance (e.g. disabling an expensive
* feature).
*/
class SK_API SkSurfaceProps {
public:
enum Flags {
kUseDeviceIndependentFonts_Flag = 1 << 0,
};
/** Deprecated alias used by Chromium. Will be removed. */
static const Flags kUseDistanceFieldFonts_Flag = kUseDeviceIndependentFonts_Flag;
SkSurfaceProps(uint32_t flags, SkPixelGeometry);
enum InitType {
kLegacyFontHost_InitType
};
SkSurfaceProps(InitType);
SkSurfaceProps(uint32_t flags, InitType);
SkSurfaceProps(const SkSurfaceProps& other);
uint32_t flags() const { return fFlags; }
SkPixelGeometry pixelGeometry() const { return fPixelGeometry; }
bool isUseDeviceIndependentFonts() const {
return SkToBool(fFlags & kUseDeviceIndependentFonts_Flag);
}
bool operator==(const SkSurfaceProps& that) const {
return fFlags == that.fFlags && fPixelGeometry == that.fPixelGeometry;
}
private:
SkSurfaceProps();
uint32_t fFlags;
SkPixelGeometry fPixelGeometry;
};
#endif
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