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| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkPdfDiffEncoder.h" | |
| 9 #include "SkPdfNativeTokenizer.h" | |
| 10 | |
| 11 #ifdef PDF_TRACE_DIFF_IN_PNG | |
| 12 #include "SkBitmap.h" | |
| 13 #include "SkBitmapDevice.h" | |
| 14 #include "SkCanvas.h" | |
| 15 #include "SkClipStack.h" | |
| 16 #include "SkColor.h" | |
| 17 #include "SkImageEncoder.h" | |
| 18 #include "SkPaint.h" | |
| 19 #include "SkPath.h" | |
| 20 #include "SkRegion.h" | |
| 21 #include "SkScalar.h" | |
| 22 #include "SkString.h" | |
| 23 | |
| 24 extern "C" SkBitmap* gDumpBitmap; | |
| 25 extern "C" SkCanvas* gDumpCanvas; | |
| 26 SkBitmap* gDumpBitmap = NULL; | |
| 27 SkCanvas* gDumpCanvas = NULL; | |
| 28 static int gReadOp; | |
| 29 static int gOpCounter; | |
| 30 static SkString gLastKeyword; | |
| 31 #endif // PDF_TRACE_DIFF_IN_PNG | |
| 32 | |
| 33 void SkPdfDiffEncoder::WriteToFile(PdfToken* token) { | |
| 34 #ifdef PDF_TRACE_DIFF_IN_PNG | |
| 35 gReadOp++; | |
| 36 gOpCounter++; | |
| 37 | |
| 38 // Only attempt to write if the dump bitmap and canvas are non NULL. They ar
e set by | |
| 39 // pdf_viewer_main.cpp | |
| 40 if (NULL == gDumpBitmap || NULL == gDumpCanvas) { | |
| 41 return; | |
| 42 } | |
| 43 | |
| 44 // TODO(edisonn): this code is used to make a step by step history of all th
e draw operations | |
| 45 // so we could find the step where something is wrong. | |
| 46 if (!gLastKeyword.isEmpty()) { | |
| 47 gDumpCanvas->flush(); | |
| 48 | |
| 49 // Copy the existing drawing. Then we will draw the difference caused by
this command, | |
| 50 // highlighted with a blue border. | |
| 51 SkBitmap bitmap; | |
| 52 if (gDumpBitmap->copyTo(&bitmap, SkBitmap::kARGB_8888_Config)) { | |
| 53 | |
| 54 SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (bitmap
))); | |
| 55 SkCanvas canvas(device); | |
| 56 | |
| 57 // draw context stuff here | |
| 58 SkPaint blueBorder; | |
| 59 blueBorder.setColor(SK_ColorBLUE); | |
| 60 blueBorder.setStyle(SkPaint::kStroke_Style); | |
| 61 blueBorder.setTextSize(SkDoubleToScalar(20)); | |
| 62 | |
| 63 SkString str; | |
| 64 | |
| 65 const SkClipStack* clipStack = gDumpCanvas->getClipStack(); | |
| 66 if (clipStack) { | |
| 67 SkClipStack::Iter iter(*clipStack, SkClipStack::Iter::kBottom_It
erStart); | |
| 68 const SkClipStack::Element* elem; | |
| 69 double y = 0; | |
| 70 int total = 0; | |
| 71 while ((elem = iter.next()) != NULL) { | |
| 72 total++; | |
| 73 y += 30; | |
| 74 | |
| 75 switch (elem->getType()) { | |
| 76 case SkClipStack::Element::kRect_Type: | |
| 77 canvas.drawRect(elem->getRect(), blueBorder); | |
| 78 canvas.drawText("Rect Clip", strlen("Rect Clip"), | |
| 79 SkDoubleToScalar(10), SkDoubleToScal
ar(y), blueBorder); | |
| 80 break; | |
| 81 case SkClipStack::Element::kPath_Type: | |
| 82 canvas.drawPath(elem->getPath(), blueBorder); | |
| 83 canvas.drawText("Path Clip", strlen("Path Clip"), | |
| 84 SkDoubleToScalar(10), SkDoubleToScal
ar(y), blueBorder); | |
| 85 break; | |
| 86 case SkClipStack::Element::kEmpty_Type: | |
| 87 canvas.drawText("Empty Clip!!!", strlen("Empty Clip!
!!"), | |
| 88 SkDoubleToScalar(10), SkDoubleToScal
ar(y), blueBorder); | |
| 89 break; | |
| 90 default: | |
| 91 canvas.drawText("Unknown Clip!!!", strlen("Unknown C
lip!!!"), | |
| 92 SkDoubleToScalar(10), SkDoubleToScal
ar(y), blueBorder); | |
| 93 break; | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 y += 30; | |
| 98 str.printf("Number of clips in stack: %i", total); | |
| 99 canvas.drawText(str.c_str(), str.size(), | |
| 100 SkDoubleToScalar(10), SkDoubleToScalar(y), blueB
order); | |
| 101 } | |
| 102 | |
| 103 const SkRegion& clipRegion = gDumpCanvas->getTotalClip(); | |
| 104 SkPath clipPath; | |
| 105 if (clipRegion.getBoundaryPath(&clipPath)) { | |
| 106 SkPaint redBorder; | |
| 107 redBorder.setColor(SK_ColorRED); | |
| 108 redBorder.setStyle(SkPaint::kStroke_Style); | |
| 109 canvas.drawPath(clipPath, redBorder); | |
| 110 } | |
| 111 | |
| 112 canvas.flush(); | |
| 113 | |
| 114 SkString out; | |
| 115 | |
| 116 // TODO(edisonn): overlay on top of image inf about the clip , grafi
c state, the stack | |
| 117 | |
| 118 out.appendf("/tmp/log_step_by_step/step-%i-%s.png", gOpCounter, gLas
tKeyword.c_str()); | |
| 119 | |
| 120 SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG
_Type, 100); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 if (token->fType == kKeyword_TokenType && token->fKeyword && token->fKeyword
Length > 0) { | |
| 125 gLastKeyword.set(token->fKeyword, token->fKeywordLength); | |
| 126 } else { | |
| 127 gLastKeyword.reset(); | |
| 128 } | |
| 129 #endif | |
| 130 } | |
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