1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include <memory>
8 #include <vector>
9
10 #include "core/fxcrt/fx_system.h"
11
12 #include "core/fxge/apple/apple_int.h"
13 #include "core/fxge/cfx_cliprgn.h"
14 #include "core/fxge/cfx_font.h"
15 #include "core/fxge/cfx_gemodule.h"
16 #include "core/fxge/cfx_glyphbitmap.h"
17 #include "core/fxge/cfx_glyphcache.h"
18 #include "core/fxge/cfx_renderdevice.h"
19 #include "core/fxge/cfx_substfont.h"
20 #include "core/fxge/dib/cfx_dibitmap.h"
21 #include "core/fxge/fx_freetype.h"
22 #include "core/fxge/text_char_pos.h"
23 #include "third_party/base/span.h"
24
25 #ifndef _SKIA_SUPPORT_
26 #include "core/fxge/agg/fx_agg_driver.h"
27 #endif
28
29 #ifndef _SKIA_SUPPORT_
30
31 namespace {
32
DoNothing(void * info,const void * data,size_t size)33 void DoNothing(void* info, const void* data, size_t size) {}
34
CGDrawGlyphRun(CGContextRef pContext,int nChars,const TextCharPos * pCharPos,CFX_Font * pFont,const CFX_Matrix & mtObject2Device,float font_size,uint32_t argb)35 bool CGDrawGlyphRun(CGContextRef pContext,
36 int nChars,
37 const TextCharPos* pCharPos,
38 CFX_Font* pFont,
39 const CFX_Matrix& mtObject2Device,
40 float font_size,
41 uint32_t argb) {
42 if (nChars == 0)
43 return true;
44
45 bool bNegSize = font_size < 0;
46 if (bNegSize)
47 font_size = -font_size;
48
49 CFX_Matrix new_matrix = mtObject2Device;
50 CQuartz2D& quartz2d =
51 static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatform())
52 ->m_quartz2d;
53 if (!pFont->GetPlatformFont()) {
54 if (pFont->GetPsName() == "DFHeiStd-W5")
55 return false;
56
57 pdfium::span<const uint8_t> span = pFont->GetFontSpan();
58 pFont->SetPlatformFont(quartz2d.CreateFont(span.data(), span.size()));
59 if (!pFont->GetPlatformFont())
60 return false;
61 }
62 std::vector<uint16_t> glyph_indices(nChars);
63 std::vector<CGPoint> glyph_positions(nChars);
64 for (int i = 0; i < nChars; i++) {
65 glyph_indices[i] =
66 pCharPos[i].m_ExtGID ? pCharPos[i].m_ExtGID : pCharPos[i].m_GlyphIndex;
67 if (bNegSize)
68 glyph_positions[i].x = -pCharPos[i].m_Origin.x;
69 else
70 glyph_positions[i].x = pCharPos[i].m_Origin.x;
71 glyph_positions[i].y = pCharPos[i].m_Origin.y;
72 }
73 if (bNegSize) {
74 new_matrix.a = -new_matrix.a;
75 new_matrix.c = -new_matrix.c;
76 } else {
77 new_matrix.b = -new_matrix.b;
78 new_matrix.d = -new_matrix.d;
79 }
80 quartz2d.SetGraphicsTextMatrix(pContext, new_matrix);
81 return quartz2d.DrawGraphicsString(pContext, pFont->GetPlatformFont(),
82 font_size, glyph_indices.data(),
83 glyph_positions.data(), nChars, argb);
84 }
85
86 } // namespace
87
InitPlatform()88 void CFX_AggDeviceDriver::InitPlatform() {
89 CQuartz2D& quartz2d =
90 static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatform())
91 ->m_quartz2d;
92 m_pPlatformGraphics = quartz2d.CreateGraphics(m_pBitmap);
93 }
94
DestroyPlatform()95 void CFX_AggDeviceDriver::DestroyPlatform() {
96 CQuartz2D& quartz2d =
97 static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatform())
98 ->m_quartz2d;
99 if (m_pPlatformGraphics) {
100 quartz2d.DestroyGraphics(m_pPlatformGraphics);
101 m_pPlatformGraphics = nullptr;
102 }
103 }
104
DrawDeviceText(int nChars,const TextCharPos * pCharPos,CFX_Font * pFont,const CFX_Matrix & mtObject2Device,float font_size,uint32_t argb)105 bool CFX_AggDeviceDriver::DrawDeviceText(int nChars,
106 const TextCharPos* pCharPos,
107 CFX_Font* pFont,
108 const CFX_Matrix& mtObject2Device,
109 float font_size,
110 uint32_t argb) {
111 if (!pFont)
112 return false;
113
114 bool bBold = pFont->IsBold();
115 if (!bBold && pFont->GetSubstFont() &&
116 pFont->GetSubstFont()->m_Weight >= 500 &&
117 pFont->GetSubstFont()->m_Weight <= 600) {
118 return false;
119 }
120 for (int i = 0; i < nChars; i++) {
121 if (pCharPos[i].m_bGlyphAdjust)
122 return false;
123 }
124 CGContextRef ctx = CGContextRef(m_pPlatformGraphics);
125 if (!ctx)
126 return false;
127
128 CGContextSaveGState(ctx);
129 CGContextSetTextDrawingMode(ctx, kCGTextFillClip);
130 CGRect rect_cg;
131 CGImageRef pImageCG = nullptr;
132 if (m_pClipRgn) {
133 rect_cg =
134 CGRectMake(m_pClipRgn->GetBox().left, m_pClipRgn->GetBox().top,
135 m_pClipRgn->GetBox().Width(), m_pClipRgn->GetBox().Height());
136 RetainPtr<CFX_DIBitmap> pClipMask = m_pClipRgn->GetMask();
137 if (pClipMask) {
138 CGDataProviderRef pClipMaskDataProvider = CGDataProviderCreateWithData(
139 nullptr, pClipMask->GetBuffer(),
140 pClipMask->GetPitch() * pClipMask->GetHeight(), DoNothing);
141 CGFloat decode_f[2] = {255.f, 0.f};
142 pImageCG = CGImageMaskCreate(
143 pClipMask->GetWidth(), pClipMask->GetHeight(), 8, 8,
144 pClipMask->GetPitch(), pClipMaskDataProvider, decode_f, false);
145 CGDataProviderRelease(pClipMaskDataProvider);
146 }
147 } else {
148 rect_cg = CGRectMake(0, 0, m_pBitmap->GetWidth(), m_pBitmap->GetHeight());
149 }
150 rect_cg = CGContextConvertRectToDeviceSpace(ctx, rect_cg);
151 if (pImageCG)
152 CGContextClipToMask(ctx, rect_cg, pImageCG);
153 else
154 CGContextClipToRect(ctx, rect_cg);
155
156 bool ret = CGDrawGlyphRun(ctx, nChars, pCharPos, pFont, mtObject2Device,
157 font_size, argb);
158 if (pImageCG)
159 CGImageRelease(pImageCG);
160 CGContextRestoreGState(ctx);
161 return ret;
162 }
163
164 #endif // _SKIA_SUPPORT_
165
InitPlatform()166 void CFX_GlyphCache::InitPlatform() {}
167
DestroyPlatform()168 void CFX_GlyphCache::DestroyPlatform() {}
169
RenderGlyph_Nativetext(const CFX_Font * pFont,uint32_t glyph_index,const CFX_Matrix & matrix,uint32_t dest_width,int anti_alias)170 std::unique_ptr<CFX_GlyphBitmap> CFX_GlyphCache::RenderGlyph_Nativetext(
171 const CFX_Font* pFont,
172 uint32_t glyph_index,
173 const CFX_Matrix& matrix,
174 uint32_t dest_width,
175 int anti_alias) {
176 return nullptr;
177 }
178
ReleasePlatformResource()179 void CFX_Font::ReleasePlatformResource() {
180 if (m_pPlatformFont) {
181 CQuartz2D& quartz2d =
182 static_cast<CApplePlatform*>(CFX_GEModule::Get()->GetPlatform())
183 ->m_quartz2d;
184 quartz2d.DestroyFont(m_pPlatformFont);
185 m_pPlatformFont = nullptr;
186 }
187 }
188