gfx/skia/trunk/src/core/SkAutoKern.h@deefc01c0e14 (annotated)
gfx/skia/trunk/src/core/SkAutoKern.h
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2006 The Android Open Source Project |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef SkAutoKern_DEFINED |
| michael@0 | 11 | #define SkAutoKern_DEFINED |
| michael@0 | 12 | |
| michael@0 | 13 | #include "SkGlyph.h" |
| michael@0 | 14 | |
| michael@0 | 15 | #define SkAutoKern_AdjustF(prev, next) (((next) - (prev) + 32) >> 6 << 16) |
| michael@0 | 16 | #define SkAutoKern_AdjustS(prev, next) SkIntToScalar(((next) - (prev) + 32) >> 6) |
| michael@0 | 17 | |
| michael@0 | 18 | /* this is a helper class to perform auto-kerning |
| michael@0 | 19 | * the adjust() method returns a SkFixed corresponding |
| michael@0 | 20 | * to a +1/0/-1 pixel adjustment |
| michael@0 | 21 | */ |
| michael@0 | 22 | |
| michael@0 | 23 | class SkAutoKern { |
| michael@0 | 24 | public: |
| michael@0 | 25 | SkAutoKern() : fPrevRsbDelta(0) {} |
| michael@0 | 26 | |
| michael@0 | 27 | SkFixed adjust(const SkGlyph& glyph) |
| michael@0 | 28 | { |
| michael@0 | 29 | // if (SkAbs32(glyph.fLsbDelta) > 47 || SkAbs32(glyph.fRsbDelta) > 47) |
| michael@0 | 30 | // printf("------- %d> L %d R %d\n", glyph.f_GlyphID, glyph.fLsbDelta, glyph.fRsbDelta); |
| michael@0 | 31 | |
| michael@0 | 32 | #if 0 |
| michael@0 | 33 | int distort = fPrevRsbDelta - glyph.fLsbDelta; |
| michael@0 | 34 | |
| michael@0 | 35 | fPrevRsbDelta = glyph.fRsbDelta; |
| michael@0 | 36 | |
| michael@0 | 37 | if (distort >= 32) |
| michael@0 | 38 | return -SK_Fixed1; |
| michael@0 | 39 | else if (distort < -32) |
| michael@0 | 40 | return +SK_Fixed1; |
| michael@0 | 41 | else |
| michael@0 | 42 | return 0; |
| michael@0 | 43 | #else |
| michael@0 | 44 | SkFixed adjust = SkAutoKern_AdjustF(fPrevRsbDelta, glyph.fLsbDelta); |
| michael@0 | 45 | fPrevRsbDelta = glyph.fRsbDelta; |
| michael@0 | 46 | return adjust; |
| michael@0 | 47 | #endif |
| michael@0 | 48 | } |
| michael@0 | 49 | private: |
| michael@0 | 50 | int fPrevRsbDelta; |
| michael@0 | 51 | }; |
| michael@0 | 52 | |
| michael@0 | 53 | #endif |
