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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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