1 : /* GRAPHITE2 LICENSING
2 :
3 : Copyright 2010, SIL International
4 : All rights reserved.
5 :
6 : This library is free software; you can redistribute it and/or modify
7 : it under the terms of the GNU Lesser General Public License as published
8 : by the Free Software Foundation; either version 2.1 of License, or
9 : (at your option) any later version.
10 :
11 : This program is distributed in the hope that it will be useful,
12 : but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 : Lesser General Public License for more details.
15 :
16 : You should also have received a copy of the GNU Lesser General Public
17 : License along with this library in the file named "LICENSE".
18 : If not, write to the Free Software Foundation, 51 Franklin Street,
19 : Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
20 : internet at http://www.fsf.org/licenses/lgpl.html.
21 :
22 : Alternatively, the contents of this file may be used under the terms of the
23 : Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
24 : License, as published by the Free Software Foundation, either version 2
25 : of the License or (at your option) any later version.
26 : */
27 : #pragma once
28 :
29 : #include "inc/Main.h"
30 : #include "inc/Position.h"
31 : #include "inc/Sparse.h"
32 :
33 : namespace graphite2 {
34 :
35 : enum metrics {
36 : kgmetLsb = 0, kgmetRsb,
37 : kgmetBbTop, kgmetBbBottom, kgmetBbLeft, kgmetBbRight,
38 : kgmetBbHeight, kgmetBbWidth,
39 : kgmetAdvWidth, kgmetAdvHeight,
40 : kgmetAscent, kgmetDescent
41 : };
42 :
43 : class Rect
44 : {
45 : public :
46 0 : Rect() {}
47 0 : Rect(const Position& botLeft, const Position& topRight): bl(botLeft), tr(topRight) {}
48 0 : Rect widen(const Rect& other) { return Rect(Position(bl.x > other.bl.x ? other.bl.x : bl.x, bl.y > other.bl.y ? other.bl.y : bl.y), Position(tr.x > other.tr.x ? tr.x : other.tr.x, tr.y > other.tr.y ? tr.y : other.tr.y)); }
49 0 : Rect operator + (const Position &a) const { return Rect(Position(bl.x + a.x, bl.y + a.y), Position(tr.x + a.x, tr.y + a.y)); }
50 0 : Rect operator * (float m) const { return Rect(Position(bl.x, bl.y) * m, Position(tr.x, tr.y) * m); }
51 :
52 : Position bl;
53 : Position tr;
54 : };
55 :
56 : class GlyphFaceCacheHeader;
57 :
58 : class GlyphFace
59 : {
60 : private:
61 : friend class GlyphFaceCache;
62 : GlyphFace(const GlyphFaceCacheHeader& hdr, unsigned short glyphid);
63 : ~GlyphFace() throw();
64 :
65 : public:
66 :
67 : const Position & theAdvance() const;
68 0 : const Rect &theBBox() const { return m_bbox; }
69 0 : uint16 getAttr(uint8 index) const {
70 0 : return m_attrs ? m_attrs[index] : 0;
71 : }
72 : uint16 getMetric(uint8 metric) const;
73 :
74 : private:
75 : Rect m_bbox; // bounding box metrics in design units
76 : Position m_advance; // Advance width and height in design units
77 : sparse m_attrs;
78 : };
79 :
80 :
81 0 : inline GlyphFace::~GlyphFace() throw() {
82 0 : }
83 :
84 0 : inline const Position & GlyphFace::theAdvance() const {
85 0 : return m_advance;
86 : }
87 :
88 : } // namespace graphite2
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