1
2 /*
3 *******************************************************************************
4 *
5 * © 2016 and later: Unicode, Inc. and others.
6 * License & terms of use: http://www.unicode.org/copyright.html#License
7 *
8 *******************************************************************************
9 *******************************************************************************
10 *
11 * Copyright (C) 1999-2003, International Business Machines
12 * Corporation and others. All Rights Reserved.
13 *
14 *******************************************************************************
15 * file name: GDIFontInstance.h
16 *
17 * created on: 08/09/2000
18 * created by: Eric R. Mader
19 */
20
21 #ifndef __GDIFONTINSTANCE_H
22 #define __GDIFONTINSTANCE_H
23
24 #include <windows.h>
25
26 #include "layout/LETypes.h"
27 #include "layout/LEFontInstance.h"
28 #include "RenderingSurface.h"
29 #include "FontTableCache.h"
30 #include "cmaps.h"
31
32 class GDIFontInstance;
33
34 class GDISurface : public RenderingSurface
35 {
36 public:
37 GDISurface(HDC theHDC);
38 virtual ~GDISurface();
39
40 virtual void drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count,
41 const float *positions, le_int32 x, le_int32 y, le_int32 width, le_int32 height);
42
43 void setFont(const GDIFontInstance *font);
44 HDC getHDC() const;
45 void setHDC(HDC theHDC);
46
47 private:
48 HDC fHdc;
49 const GDIFontInstance *fCurrentFont;
50 };
51
getHDC()52 inline HDC GDISurface::getHDC() const
53 {
54 return fHdc;
55 }
56
57 class GDIFontInstance : public LEFontInstance, protected FontTableCache
58 {
59 protected:
60 GDISurface *fSurface;
61 HFONT fFont;
62
63 le_int32 fPointSize;
64 le_int32 fUnitsPerEM;
65 le_int32 fAscent;
66 le_int32 fDescent;
67 le_int32 fLeading;
68
69 float fDeviceScaleX;
70 float fDeviceScaleY;
71
72 CMAPMapper *fMapper;
73
74 virtual const void *readFontTable(LETag tableTag) const;
75
76 virtual LEErrorCode initMapper();
77
78 public:
79 GDIFontInstance(GDISurface *surface, TCHAR *faceName, le_int16 pointSize, LEErrorCode &status);
80 GDIFontInstance(GDISurface *surface, const char *faceName, le_int16 pointSize, LEErrorCode &status);
81 //GDIFontInstance(GDISurface *surface, le_int16 pointSize);
82
83 virtual ~GDIFontInstance();
84
85 HFONT getFont() const;
86
87 virtual const void *getFontTable(LETag tableTag) const;
88
89 virtual le_int32 getUnitsPerEM() const;
90
91 virtual le_int32 getAscent() const;
92
93 virtual le_int32 getDescent() const;
94
95 virtual le_int32 getLeading() const;
96
97 virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
98
99 virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
100
101 virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
102
103 float getXPixelsPerEm() const;
104
105 float getYPixelsPerEm() const;
106
107 float getScaleFactorX() const;
108
109 float getScaleFactorY() const;
110 };
111
getFont()112 inline HFONT GDIFontInstance::getFont() const
113 {
114 return fFont;
115 }
116
getUnitsPerEM()117 inline le_int32 GDIFontInstance::getUnitsPerEM() const
118 {
119 return fUnitsPerEM;
120 }
121
getAscent()122 inline le_int32 GDIFontInstance::getAscent() const
123 {
124 return fAscent;
125 }
126
getDescent()127 inline le_int32 GDIFontInstance::getDescent() const
128 {
129 return fDescent;
130 }
131
getLeading()132 inline le_int32 GDIFontInstance::getLeading() const
133 {
134 return fLeading;
135 }
136
mapCharToGlyph(LEUnicode32 ch)137 inline LEGlyphID GDIFontInstance::mapCharToGlyph(LEUnicode32 ch) const
138 {
139 return fMapper->unicodeToGlyph(ch);
140 }
141
getXPixelsPerEm()142 inline float GDIFontInstance::getXPixelsPerEm() const
143 {
144 return (float) fPointSize;
145 }
146
getYPixelsPerEm()147 inline float GDIFontInstance::getYPixelsPerEm() const
148 {
149 return (float) fPointSize;
150 }
151
getScaleFactorX()152 inline float GDIFontInstance::getScaleFactorX() const
153 {
154 return fDeviceScaleX;
155 }
156
getScaleFactorY()157 inline float GDIFontInstance::getScaleFactorY() const
158 {
159 return fDeviceScaleY;
160 }
161
162 #endif
163