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Unified Diff: src/core/SkPaint.cpp

Issue 1737693006: Change type of SkGlyph::fAdvance[XY] to float. (Closed) Base URL: https://skia.googlesource.com/skia@master
Patch Set: Created 4 years, 9 months ago
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Index: src/core/SkPaint.cpp
diff --git a/src/core/SkPaint.cpp b/src/core/SkPaint.cpp
index 6fe9d7599d30a7342fe0f3b93301453842f46eb3..2ced3f6bef1e50a32e48c2aa426f576bcd181c23 100644
--- a/src/core/SkPaint.cpp
+++ b/src/core/SkPaint.cpp
@@ -733,28 +733,26 @@ static void set_bounds(const SkGlyph& g, SkRect* bounds) {
SkIntToScalar(g.fTop + g.fHeight));
}
-static void join_bounds_x(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dx) {
- SkScalar sx = Sk48Dot16ToScalar(dx);
- bounds->join(SkIntToScalar(g.fLeft) + sx,
+static void join_bounds_x(const SkGlyph& g, SkRect* bounds, SkScalar dx) {
+ bounds->join(SkIntToScalar(g.fLeft) + dx,
SkIntToScalar(g.fTop),
- SkIntToScalar(g.fLeft + g.fWidth) + sx,
+ SkIntToScalar(g.fLeft + g.fWidth) + dx,
SkIntToScalar(g.fTop + g.fHeight));
}
-static void join_bounds_y(const SkGlyph& g, SkRect* bounds, Sk48Dot16 dy) {
- SkScalar sy = Sk48Dot16ToScalar(dy);
+static void join_bounds_y(const SkGlyph& g, SkRect* bounds, SkScalar dy) {
bounds->join(SkIntToScalar(g.fLeft),
- SkIntToScalar(g.fTop) + sy,
+ SkIntToScalar(g.fTop) + dy,
SkIntToScalar(g.fLeft + g.fWidth),
- SkIntToScalar(g.fTop + g.fHeight) + sy);
+ SkIntToScalar(g.fTop + g.fHeight) + dy);
}
-typedef void (*JoinBoundsProc)(const SkGlyph&, SkRect*, Sk48Dot16);
+typedef void (*JoinBoundsProc)(const SkGlyph&, SkRect*, SkScalar);
// xyIndex is 0 for fAdvanceX or 1 for fAdvanceY
-static SkFixed advance(const SkGlyph& glyph, int xyIndex) {
+static SkScalar advance(const SkGlyph& glyph, int xyIndex) {
SkASSERT(0 == xyIndex || 1 == xyIndex);
- return (&glyph.fAdvanceX)[xyIndex];
+ return SkFloatToScalar((&glyph.fAdvanceX)[xyIndex]);
}
SkScalar SkPaint::measure_text(SkGlyphCache* cache,
@@ -784,20 +782,14 @@ SkScalar SkPaint::measure_text(SkGlyphCache* cache,
int n = 1;
const char* stop = (const char*)text + byteLength;
const SkGlyph* g = &glyphCacheProc(cache, &text);
- // our accumulated fixed-point advances might overflow 16.16, so we use
- // a 48.16 (64bit) accumulator, and then convert that to scalar at the
- // very end.
- Sk48Dot16 x = advance(*g, xyIndex);
-
- SkAutoKern autokern;
+ SkScalar x = advance(*g, xyIndex);
if (nullptr == bounds) {
if (this->isDevKernText()) {
- int rsb;
for (; text < stop; n++) {
- rsb = g->fRsbDelta;
+ const int rsb = g->fRsbDelta;
g = &glyphCacheProc(cache, &text);
- x += SkAutoKern_AdjustF(rsb, g->fLsbDelta) + advance(*g, xyIndex);
+ x += SkAutoKern_Adjust(rsb, g->fLsbDelta) + advance(*g, xyIndex);
}
} else {
for (; text < stop; n++) {
@@ -807,11 +799,10 @@ SkScalar SkPaint::measure_text(SkGlyphCache* cache,
} else {
set_bounds(*g, bounds);
if (this->isDevKernText()) {
- int rsb;
for (; text < stop; n++) {
- rsb = g->fRsbDelta;
+ const int rsb = g->fRsbDelta;
g = &glyphCacheProc(cache, &text);
- x += SkAutoKern_AdjustF(rsb, g->fLsbDelta);
+ x += SkAutoKern_Adjust(rsb, g->fLsbDelta);
joinBoundsProc(*g, bounds, x);
x += advance(*g, xyIndex);
}
@@ -826,7 +817,7 @@ SkScalar SkPaint::measure_text(SkGlyphCache* cache,
SkASSERT(text == stop);
*count = n;
- return Sk48Dot16ToScalar(x);
+ return x;
}
SkScalar SkPaint::measureText(const void* textData, size_t length, SkRect* bounds) const {
@@ -896,19 +887,15 @@ size_t SkPaint::breakText(const void* textD, size_t length, SkScalar maxWidth,
GlyphCacheProc glyphCacheProc = paint.getGlyphCacheProc(false);
const int xyIndex = paint.isVerticalText() ? 1 : 0;
- // use 64bits for our accumulator, to avoid overflowing 16.16
- Sk48Dot16 max = SkScalarTo48Dot16(maxWidth);
- Sk48Dot16 width = 0;
-
- SkAutoKern autokern;
+ SkScalar width = 0;
if (this->isDevKernText()) {
int rsb = 0;
while (text < stop) {
const char* curr = text;
const SkGlyph& g = glyphCacheProc(cache, &text);
- SkFixed x = SkAutoKern_AdjustF(rsb, g.fLsbDelta) + advance(g, xyIndex);
- if ((width += x) > max) {
+ SkScalar x = SkAutoKern_Adjust(rsb, g.fLsbDelta) + advance(g, xyIndex);
+ if ((width += x) > maxWidth) {
width -= x;
text = curr;
break;
@@ -918,8 +905,8 @@ size_t SkPaint::breakText(const void* textD, size_t length, SkScalar maxWidth,
} else {
while (text < stop) {
const char* curr = text;
- SkFixed x = advance(glyphCacheProc(cache, &text), xyIndex);
- if ((width += x) > max) {
+ SkScalar x = advance(glyphCacheProc(cache, &text), xyIndex);
+ if ((width += x) > maxWidth) {
width -= x;
text = curr;
break;
@@ -928,11 +915,10 @@ size_t SkPaint::breakText(const void* textD, size_t length, SkScalar maxWidth,
}
if (measuredWidth) {
- SkScalar scalarWidth = Sk48Dot16ToScalar(width);
if (scale) {
- scalarWidth = SkScalarMul(scalarWidth, scale);
+ width *= scale;
}
- *measuredWidth = scalarWidth;
+ *measuredWidth = width;
}
// return the number of bytes measured
@@ -1022,17 +1008,16 @@ int SkPaint::getTextWidths(const void* textData, size_t byteLength,
if (this->isDevKernText()) {
// we adjust the widths returned here through auto-kerning
SkAutoKern autokern;
- SkFixed prevWidth = 0;
+ SkScalar prevWidth = 0;
if (scale) {
while (text < stop) {
const SkGlyph& g = glyphCacheProc(cache, &text);
if (widths) {
- SkFixed adjust = autokern.adjust(g);
+ SkScalar adjust = autokern.adjust(g);
if (count > 0) {
- SkScalar w = SkFixedToScalar(prevWidth + adjust);
- *widths++ = SkScalarMul(w, scale);
+ *widths++ = SkScalarMul(prevWidth + adjust, scale);
}
prevWidth = advance(g, xyIndex);
}
@@ -1042,16 +1027,16 @@ int SkPaint::getTextWidths(const void* textData, size_t byteLength,
++count;
}
if (count > 0 && widths) {
- *widths = SkScalarMul(SkFixedToScalar(prevWidth), scale);
+ *widths = SkScalarMul(prevWidth, scale);
}
} else {
while (text < stop) {
const SkGlyph& g = glyphCacheProc(cache, &text);
if (widths) {
- SkFixed adjust = autokern.adjust(g);
+ SkScalar adjust = autokern.adjust(g);
if (count > 0) {
- *widths++ = SkFixedToScalar(prevWidth + adjust);
+ *widths++ = prevWidth + adjust;
}
prevWidth = advance(g, xyIndex);
}
@@ -1061,7 +1046,7 @@ int SkPaint::getTextWidths(const void* textData, size_t byteLength,
++count;
}
if (count > 0 && widths) {
- *widths = SkFixedToScalar(prevWidth);
+ *widths = prevWidth;
}
}
} else { // no devkern
@@ -1069,7 +1054,7 @@ int SkPaint::getTextWidths(const void* textData, size_t byteLength,
while (text < stop) {
const SkGlyph& g = glyphCacheProc(cache, &text);
if (widths) {
- *widths++ = SkScalarMul(SkFixedToScalar(advance(g, xyIndex)),
+ *widths++ = SkScalarMul(advance(g, xyIndex),
scale);
}
if (bounds) {
@@ -1081,7 +1066,7 @@ int SkPaint::getTextWidths(const void* textData, size_t byteLength,
while (text < stop) {
const SkGlyph& g = glyphCacheProc(cache, &text);
if (widths) {
- *widths++ = SkFixedToScalar(advance(g, xyIndex));
+ *widths++ = advance(g, xyIndex);
}
if (bounds) {
set_bounds(g, bounds++);
@@ -2297,7 +2282,7 @@ bool SkTextToPathIter::next(const SkPath** path, SkScalar* xpos) {
if (fText < fStop) {
const SkGlyph& glyph = fGlyphCacheProc(fCache, &fText);
- fXPos += SkScalarMul(SkFixedToScalar(fPrevAdvance + fAutoKern.adjust(glyph)), fScale);
+ fXPos += SkScalarMul(fPrevAdvance + fAutoKern.adjust(glyph), fScale);
fPrevAdvance = advance(glyph, fXYIndex); // + fPaint.getTextTracking();
if (glyph.fWidth) {
@@ -2319,7 +2304,7 @@ bool SkTextToPathIter::next(const SkPath** path, SkScalar* xpos) {
bool SkTextInterceptsIter::next(SkScalar* array, int* count) {
const SkGlyph& glyph = fGlyphCacheProc(fCache, &fText);
- fXPos += SkScalarMul(SkFixedToScalar(fPrevAdvance + fAutoKern.adjust(glyph)), fScale);
+ fXPos += SkScalarMul(fPrevAdvance + fAutoKern.adjust(glyph), fScale);
fPrevAdvance = advance(glyph, fXYIndex); // + fPaint.getTextTracking();
if (fCache->findPath(glyph)) {
fCache->findIntercepts(fBounds, fScale, fXPos, SkToBool(fXYIndex),
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