972f9cd7a0
BUG=skia: R=bsalomon@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/216503004 git-svn-id: http://skia.googlecode.com/svn/trunk@13982 2bbb7eff-a529-9590-31e7-b0007b416f81
79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/*
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* Copyright 2010 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrGlyph_DEFINED
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#define GrGlyph_DEFINED
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#include "GrRect.h"
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#include "SkPath.h"
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class GrPlot;
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/* Need this to be quad-state:
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- complete w/ image
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- just metrics
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- failed to get image, but has metrics
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- failed to get metrics
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*/
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struct GrGlyph {
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typedef uint32_t PackedID;
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GrPlot* fPlot;
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SkPath* fPath;
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PackedID fPackedID;
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GrIRect16 fBounds;
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GrIPoint16 fAtlasLocation;
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void init(GrGlyph::PackedID packed, const SkIRect& bounds) {
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fPlot = NULL;
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fPath = NULL;
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fPackedID = packed;
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fBounds.set(bounds);
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fAtlasLocation.set(0, 0);
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}
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void free() {
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if (fPath) {
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delete fPath;
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fPath = NULL;
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}
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}
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int width() const { return fBounds.width(); }
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int height() const { return fBounds.height(); }
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bool isEmpty() const { return fBounds.isEmpty(); }
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uint16_t glyphID() const { return UnpackID(fPackedID); }
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///////////////////////////////////////////////////////////////////////////
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static inline unsigned ExtractSubPixelBitsFromFixed(SkFixed pos) {
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// two most significant fraction bits from fixed-point
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return (pos >> 14) & 3;
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}
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static inline PackedID Pack(uint16_t glyphID, SkFixed x, SkFixed y) {
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x = ExtractSubPixelBitsFromFixed(x);
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y = ExtractSubPixelBitsFromFixed(y);
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return (x << 18) | (y << 16) | glyphID;
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}
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static inline SkFixed UnpackFixedX(PackedID packed) {
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return ((packed >> 18) & 3) << 14;
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}
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static inline SkFixed UnpackFixedY(PackedID packed) {
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return ((packed >> 16) & 3) << 14;
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}
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static inline uint16_t UnpackID(PackedID packed) {
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return (uint16_t)packed;
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}
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};
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#endif
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