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Side by Side Diff: src/pdf/SkPDFDevice.cpp

Issue 1124193003: SkPDF: Move utility fns to SkPDFUtils (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: 2015-05-06 (Wednesday) 13:16:21 EDT Created 5 years, 7 months ago
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1 /* 1 /*
2 * Copyright 2011 Google Inc. 2 * Copyright 2011 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #include "SkPDFDevice.h" 8 #include "SkPDFDevice.h"
9 9
10 #include "SkAnnotation.h" 10 #include "SkAnnotation.h"
(...skipping 22 matching lines...) Expand all
33 #include "SkTemplates.h" 33 #include "SkTemplates.h"
34 #include "SkTypefacePriv.h" 34 #include "SkTypefacePriv.h"
35 35
36 #define DPI_FOR_RASTER_SCALE_ONE 72 36 #define DPI_FOR_RASTER_SCALE_ONE 72
37 37
38 // Utility functions 38 // Utility functions
39 39
40 static void emit_pdf_color(SkColor color, SkWStream* result) { 40 static void emit_pdf_color(SkColor color, SkWStream* result) {
41 SkASSERT(SkColorGetA(color) == 0xFF); // We handle alpha elsewhere. 41 SkASSERT(SkColorGetA(color) == 0xFF); // We handle alpha elsewhere.
42 SkScalar colorMax = SkIntToScalar(0xFF); 42 SkScalar colorMax = SkIntToScalar(0xFF);
43 SkPDFScalar::Append( 43 SkPDFUtils::AppendScalar(
44 SkScalarDiv(SkIntToScalar(SkColorGetR(color)), colorMax), result); 44 SkScalarDiv(SkIntToScalar(SkColorGetR(color)), colorMax), result);
45 result->writeText(" "); 45 result->writeText(" ");
46 SkPDFScalar::Append( 46 SkPDFUtils::AppendScalar(
47 SkScalarDiv(SkIntToScalar(SkColorGetG(color)), colorMax), result); 47 SkScalarDiv(SkIntToScalar(SkColorGetG(color)), colorMax), result);
48 result->writeText(" "); 48 result->writeText(" ");
49 SkPDFScalar::Append( 49 SkPDFUtils::AppendScalar(
50 SkScalarDiv(SkIntToScalar(SkColorGetB(color)), colorMax), result); 50 SkScalarDiv(SkIntToScalar(SkColorGetB(color)), colorMax), result);
51 result->writeText(" "); 51 result->writeText(" ");
52 } 52 }
53 53
54 static SkPaint calculate_text_paint(const SkPaint& paint) { 54 static SkPaint calculate_text_paint(const SkPaint& paint) {
55 SkPaint result = paint; 55 SkPaint result = paint;
56 if (result.isFakeBoldText()) { 56 if (result.isFakeBoldText()) {
57 SkScalar fakeBoldScale = SkScalarInterpFunc(result.getTextSize(), 57 SkScalar fakeBoldScale = SkScalarInterpFunc(result.getTextSize(),
58 kStdFakeBoldInterpKeys, 58 kStdFakeBoldInterpKeys,
59 kStdFakeBoldInterpValues, 59 kStdFakeBoldInterpValues,
(...skipping 97 matching lines...) Expand 10 before | Expand all | Expand 10 after
157 } 157 }
158 *glyphIDs = storage->get(); 158 *glyphIDs = storage->get();
159 return numGlyphs; 159 return numGlyphs;
160 } 160 }
161 161
162 static void set_text_transform(SkScalar x, SkScalar y, SkScalar textSkewX, 162 static void set_text_transform(SkScalar x, SkScalar y, SkScalar textSkewX,
163 SkWStream* content) { 163 SkWStream* content) {
164 // Flip the text about the x-axis to account for origin swap and include 164 // Flip the text about the x-axis to account for origin swap and include
165 // the passed parameters. 165 // the passed parameters.
166 content->writeText("1 0 "); 166 content->writeText("1 0 ");
167 SkPDFScalar::Append(0 - textSkewX, content); 167 SkPDFUtils::AppendScalar(0 - textSkewX, content);
168 content->writeText(" -1 "); 168 content->writeText(" -1 ");
169 SkPDFScalar::Append(x, content); 169 SkPDFUtils::AppendScalar(x, content);
170 content->writeText(" "); 170 content->writeText(" ");
171 SkPDFScalar::Append(y, content); 171 SkPDFUtils::AppendScalar(y, content);
172 content->writeText(" Tm\n"); 172 content->writeText(" Tm\n");
173 } 173 }
174 174
175 // It is important to not confuse GraphicStateEntry with SkPDFGraphicState, the 175 // It is important to not confuse GraphicStateEntry with SkPDFGraphicState, the
176 // later being our representation of an object in the PDF file. 176 // later being our representation of an object in the PDF file.
177 struct GraphicStateEntry { 177 struct GraphicStateEntry {
178 GraphicStateEntry(); 178 GraphicStateEntry();
179 179
180 // Compare the fields we care about when setting up a new content entry. 180 // Compare the fields we care about when setting up a new content entry.
181 bool compareInitialState(const GraphicStateEntry& b); 181 bool compareInitialState(const GraphicStateEntry& b);
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540 540
541 if (state.fGraphicStateIndex != currentEntry()->fGraphicStateIndex) { 541 if (state.fGraphicStateIndex != currentEntry()->fGraphicStateIndex) {
542 SkPDFUtils::ApplyGraphicState(state.fGraphicStateIndex, fContentStream); 542 SkPDFUtils::ApplyGraphicState(state.fGraphicStateIndex, fContentStream);
543 currentEntry()->fGraphicStateIndex = state.fGraphicStateIndex; 543 currentEntry()->fGraphicStateIndex = state.fGraphicStateIndex;
544 } 544 }
545 545
546 if (state.fTextScaleX) { 546 if (state.fTextScaleX) {
547 if (state.fTextScaleX != currentEntry()->fTextScaleX) { 547 if (state.fTextScaleX != currentEntry()->fTextScaleX) {
548 SkScalar pdfScale = SkScalarMul(state.fTextScaleX, 548 SkScalar pdfScale = SkScalarMul(state.fTextScaleX,
549 SkIntToScalar(100)); 549 SkIntToScalar(100));
550 SkPDFScalar::Append(pdfScale, fContentStream); 550 SkPDFUtils::AppendScalar(pdfScale, fContentStream);
551 fContentStream->writeText(" Tz\n"); 551 fContentStream->writeText(" Tz\n");
552 currentEntry()->fTextScaleX = state.fTextScaleX; 552 currentEntry()->fTextScaleX = state.fTextScaleX;
553 } 553 }
554 if (state.fTextFill != currentEntry()->fTextFill) { 554 if (state.fTextFill != currentEntry()->fTextFill) {
555 SK_COMPILE_ASSERT(SkPaint::kFill_Style == 0, enum_must_match_value); 555 SK_COMPILE_ASSERT(SkPaint::kFill_Style == 0, enum_must_match_value);
556 SK_COMPILE_ASSERT(SkPaint::kStroke_Style == 1, 556 SK_COMPILE_ASSERT(SkPaint::kStroke_Style == 1,
557 enum_must_match_value); 557 enum_must_match_value);
558 SK_COMPILE_ASSERT(SkPaint::kStrokeAndFill_Style == 2, 558 SK_COMPILE_ASSERT(SkPaint::kStrokeAndFill_Style == 2,
559 enum_must_match_value); 559 enum_must_match_value);
560 fContentStream->writeDecAsText(state.fTextFill); 560 fContentStream->writeDecAsText(state.fTextFill);
(...skipping 512 matching lines...) Expand 10 before | Expand all | Expand 10 after
1073 } 1073 }
1074 result[4 * len + 1] = '>'; 1074 result[4 * len + 1] = '>';
1075 return result; 1075 return result;
1076 } else { 1076 } else {
1077 SkASSERT(len <= 65535); 1077 SkASSERT(len <= 65535);
1078 SkString tmp(len); 1078 SkString tmp(len);
1079 for (size_t i = 0; i < len; i++) { 1079 for (size_t i = 0; i < len; i++) {
1080 SkASSERT(0 == input[i] >> 8); 1080 SkASSERT(0 == input[i] >> 8);
1081 tmp[i] = static_cast<uint8_t>(input[i]); 1081 tmp[i] = static_cast<uint8_t>(input[i]);
1082 } 1082 }
1083 return SkPDFString::FormatString(tmp.c_str(), tmp.size()); 1083 return SkPDFUtils::FormatString(tmp.c_str(), tmp.size());
1084 } 1084 }
1085 } 1085 }
1086 1086
1087 void SkPDFDevice::drawText(const SkDraw& d, const void* text, size_t len, 1087 void SkPDFDevice::drawText(const SkDraw& d, const void* text, size_t len,
1088 SkScalar x, SkScalar y, const SkPaint& paint) { 1088 SkScalar x, SkScalar y, const SkPaint& paint) {
1089 NOT_IMPLEMENTED(paint.getMaskFilter() != NULL, false); 1089 NOT_IMPLEMENTED(paint.getMaskFilter() != NULL, false);
1090 if (paint.getMaskFilter() != NULL) { 1090 if (paint.getMaskFilter() != NULL) {
1091 // Don't pretend we support drawing MaskFilters, it makes for artifacts 1091 // Don't pretend we support drawing MaskFilters, it makes for artifacts
1092 // making text unreadable (e.g. same text twice when using CSS shadows). 1092 // making text unreadable (e.g. same text twice when using CSS shadows).
1093 return; 1093 return;
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1981 SkTypeface* typeface = paint.getTypeface(); 1981 SkTypeface* typeface = paint.getTypeface();
1982 if (contentEntry->fState.fFont == NULL || 1982 if (contentEntry->fState.fFont == NULL ||
1983 contentEntry->fState.fTextSize != paint.getTextSize() || 1983 contentEntry->fState.fTextSize != paint.getTextSize() ||
1984 !contentEntry->fState.fFont->hasGlyph(glyphID)) { 1984 !contentEntry->fState.fFont->hasGlyph(glyphID)) {
1985 int fontIndex = getFontResourceIndex(typeface, glyphID); 1985 int fontIndex = getFontResourceIndex(typeface, glyphID);
1986 contentEntry->fContent.writeText("/"); 1986 contentEntry->fContent.writeText("/");
1987 contentEntry->fContent.writeText(SkPDFResourceDict::getResourceName( 1987 contentEntry->fContent.writeText(SkPDFResourceDict::getResourceName(
1988 SkPDFResourceDict::kFont_ResourceType, 1988 SkPDFResourceDict::kFont_ResourceType,
1989 fontIndex).c_str()); 1989 fontIndex).c_str());
1990 contentEntry->fContent.writeText(" "); 1990 contentEntry->fContent.writeText(" ");
1991 SkPDFScalar::Append(paint.getTextSize(), &contentEntry->fContent); 1991 SkPDFUtils::AppendScalar(paint.getTextSize(), &contentEntry->fContent);
1992 contentEntry->fContent.writeText(" Tf\n"); 1992 contentEntry->fContent.writeText(" Tf\n");
1993 contentEntry->fState.fFont = fFontResources[fontIndex]; 1993 contentEntry->fState.fFont = fFontResources[fontIndex];
1994 } 1994 }
1995 } 1995 }
1996 1996
1997 int SkPDFDevice::getFontResourceIndex(SkTypeface* typeface, uint16_t glyphID) { 1997 int SkPDFDevice::getFontResourceIndex(SkTypeface* typeface, uint16_t glyphID) {
1998 SkAutoTUnref<SkPDFFont> newFont( 1998 SkAutoTUnref<SkPDFFont> newFont(
1999 SkPDFFont::GetFontResource(fCanon, typeface, glyphID)); 1999 SkPDFFont::GetFontResource(fCanon, typeface, glyphID));
2000 int resourceIndex = fFontResources.find(newFont.get()); 2000 int resourceIndex = fFontResources.find(newFont.get());
2001 if (resourceIndex < 0) { 2001 if (resourceIndex < 0) {
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2144 return; 2144 return;
2145 } 2145 }
2146 SkAutoTUnref<SkPDFObject> image(SkPDFBitmap::Create(fCanon, subsetBitmap)); 2146 SkAutoTUnref<SkPDFObject> image(SkPDFBitmap::Create(fCanon, subsetBitmap));
2147 if (!image) { 2147 if (!image) {
2148 return; 2148 return;
2149 } 2149 }
2150 2150
2151 SkPDFUtils::DrawFormXObject(this->addXObjectResource(image.get()), 2151 SkPDFUtils::DrawFormXObject(this->addXObjectResource(image.get()),
2152 &content.entry()->fContent); 2152 &content.entry()->fContent);
2153 } 2153 }
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