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-rw-r--r--include/core/SkScalerContext.h57
1 files changed, 37 insertions, 20 deletions
diff --git a/include/core/SkScalerContext.h b/include/core/SkScalerContext.h
index 59d7125..0c93e2e 100644
--- a/include/core/SkScalerContext.h
+++ b/include/core/SkScalerContext.h
@@ -29,7 +29,10 @@ class SkPathEffect;
class SkRasterizer;
// needs to be != to any valid SkMask::Format
-#define MASK_FORMAT_JUST_ADVANCE (0xFF)
+#define MASK_FORMAT_UNKNOWN (0xFF)
+#define MASK_FORMAT_JUST_ADVANCE MASK_FORMAT_UNKNOWN
+
+#define kMaxGlyphWidth (1<<13)
struct SkGlyph {
void* fImage;
@@ -42,25 +45,38 @@ struct SkGlyph {
uint8_t fMaskFormat;
int8_t fRsbDelta, fLsbDelta; // used by auto-kerning
-
+
+ void init(uint32_t id) {
+ fID = id;
+ fImage = NULL;
+ fPath = NULL;
+ fMaskFormat = MASK_FORMAT_UNKNOWN;
+#ifdef SK_GPU_AWARE_GLYPHCACHE
+ fGLCacheOffset = SKGLYPH_GLCACHEOFFSET_INVALID;
+ fGLStrikePtr = NULL;
+#endif
+ }
+
unsigned rowBytes() const {
unsigned rb = fWidth;
if (SkMask::kBW_Format == fMaskFormat) {
rb = (rb + 7) >> 3;
+ } else if (SkMask::kARGB32_Format == fMaskFormat) {
+ rb <<= 2;
} else {
rb = SkAlign4(rb);
}
return rb;
}
-
+
bool isJustAdvance() const {
return MASK_FORMAT_JUST_ADVANCE == fMaskFormat;
}
-
+
bool isFullMetrics() const {
return MASK_FORMAT_JUST_ADVANCE != fMaskFormat;
}
-
+
uint16_t getGlyphID() const {
return ID2Code(fID);
}
@@ -70,27 +86,27 @@ struct SkGlyph {
SkASSERT(code >= baseGlyphCount);
return code - baseGlyphCount;
}
-
+
unsigned getSubX() const {
return ID2SubX(fID);
}
-
+
SkFixed getSubXFixed() const {
return SubToFixed(ID2SubX(fID));
}
-
+
SkFixed getSubYFixed() const {
return SubToFixed(ID2SubY(fID));
}
-
+
size_t computeImageSize() const;
-
+
/** Call this to set all of the metrics fields to 0 (e.g. if the scaler
encounters an error measuring a glyph). Note: this does not alter the
fImage, fPath, fID, fMaskFormat fields.
*/
void zeroMetrics();
-
+
enum {
kSubBits = 2,
kSubMask = ((1 << kSubBits) - 1),
@@ -104,28 +120,28 @@ struct SkGlyph {
static unsigned ID2Code(uint32_t id) {
return id & kCodeMask;
}
-
+
static unsigned ID2SubX(uint32_t id) {
return id >> (kSubShift + kSubShiftX);
}
-
+
static unsigned ID2SubY(uint32_t id) {
return (id >> (kSubShift + kSubShiftY)) & kSubMask;
}
-
+
static unsigned FixedToSub(SkFixed n) {
return (n >> (16 - kSubBits)) & kSubMask;
}
-
+
static SkFixed SubToFixed(unsigned sub) {
SkASSERT(sub <= kSubMask);
return sub << (16 - kSubBits);
}
-
+
static uint32_t MakeID(unsigned code) {
return code;
}
-
+
static uint32_t MakeID(unsigned code, SkFixed x, SkFixed y) {
SkASSERT(code <= kCodeMask);
x = FixedToSub(x);
@@ -134,7 +150,7 @@ struct SkGlyph {
(y << (kSubShift + kSubShiftY)) |
code;
}
-
+
void toMask(SkMask* mask) const;
/** Given a glyph which is has a mask format of LCD or VerticalLCD, take
@@ -156,6 +172,8 @@ public:
kHintingBit2_Flag = 0x20,
kEmbeddedBitmapText_Flag = 0x40,
kEmbolden_Flag = 0x80,
+ kSubpixelPositioning_Flag = 0x100,
+ kAutohinting_Flag = 0x200,
};
private:
enum {
@@ -167,10 +185,9 @@ public:
SkScalar fTextSize, fPreScaleX, fPreSkewX;
SkScalar fPost2x2[2][2];
SkScalar fFrameWidth, fMiterLimit;
- bool fSubpixelPositioning;
uint8_t fMaskFormat;
uint8_t fStrokeJoin;
- uint8_t fFlags;
+ uint16_t fFlags;
// Warning: when adding members note that the size of this structure
// must be a multiple of 4. SkDescriptor requires that its arguments be
// multiples of four and this structure is put in an SkDescriptor in