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
32class GDIFontInstance;
33
34class GDISurface : public RenderingSurface
35{
36public:
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
47private:
48    HDC fHdc;
49    const GDIFontInstance *fCurrentFont;
50};
51
52inline HDC GDISurface::getHDC() const
53{
54    return fHdc;
55}
56
57class GDIFontInstance : public LEFontInstance, protected FontTableCache
58{
59protected:
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
78public:
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
112inline HFONT GDIFontInstance::getFont() const
113{
114    return fFont;
115}
116
117inline le_int32 GDIFontInstance::getUnitsPerEM() const
118{
119    return fUnitsPerEM;
120}
121
122inline le_int32 GDIFontInstance::getAscent() const
123{
124    return fAscent;
125}
126
127inline le_int32 GDIFontInstance::getDescent() const
128{
129    return fDescent;
130}
131
132inline le_int32 GDIFontInstance::getLeading() const
133{
134    return fLeading;
135}
136
137inline LEGlyphID GDIFontInstance::mapCharToGlyph(LEUnicode32 ch) const
138{
139    return fMapper->unicodeToGlyph(ch);
140}
141
142inline float GDIFontInstance::getXPixelsPerEm() const
143{
144    return (float) fPointSize;
145}
146
147inline float GDIFontInstance::getYPixelsPerEm() const
148{
149    return  (float) fPointSize;
150}
151
152inline float GDIFontInstance::getScaleFactorX() const
153{
154    return fDeviceScaleX;
155}
156
157inline float GDIFontInstance::getScaleFactorY() const
158{
159    return fDeviceScaleY;
160}
161
162#endif
163