| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkPdfDiffEncoder.h" |
| #include "SkPdfNativeTokenizer.h" |
| |
| #ifdef PDF_TRACE_DIFF_IN_PNG |
| #include "SkBitmap.h" |
| #include "SkBitmapDevice.h" |
| #include "SkCanvas.h" |
| #include "SkClipStack.h" |
| #include "SkColor.h" |
| #include "SkImageEncoder.h" |
| #include "SkPaint.h" |
| #include "SkPath.h" |
| #include "SkRegion.h" |
| #include "SkScalar.h" |
| #include "SkString.h" |
| |
| extern "C" SkBitmap* gDumpBitmap; |
| extern "C" SkCanvas* gDumpCanvas; |
| SkBitmap* gDumpBitmap = NULL; |
| SkCanvas* gDumpCanvas = NULL; |
| static int gReadOp; |
| static int gOpCounter; |
| static SkString gLastKeyword; |
| #endif // PDF_TRACE_DIFF_IN_PNG |
| |
| void SkPdfDiffEncoder::WriteToFile(PdfToken* token) { |
| #ifdef PDF_TRACE_DIFF_IN_PNG |
| gReadOp++; |
| gOpCounter++; |
| |
| // Only attempt to write if the dump bitmap and canvas are non NULL. They are set by |
| // pdf_viewer_main.cpp |
| if (NULL == gDumpBitmap || NULL == gDumpCanvas) { |
| return; |
| } |
| |
| // TODO(edisonn): this code is used to make a step by step history of all the draw operations |
| // so we could find the step where something is wrong. |
| if (!gLastKeyword.isEmpty()) { |
| gDumpCanvas->flush(); |
| |
| // Copy the existing drawing. Then we will draw the difference caused by this command, |
| // highlighted with a blue border. |
| SkBitmap bitmap; |
| if (gDumpBitmap->copyTo(&bitmap, SkBitmap::kARGB_8888_Config)) { |
| |
| SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (bitmap))); |
| SkCanvas canvas(device); |
| |
| // draw context stuff here |
| SkPaint blueBorder; |
| blueBorder.setColor(SK_ColorBLUE); |
| blueBorder.setStyle(SkPaint::kStroke_Style); |
| blueBorder.setTextSize(SkDoubleToScalar(20)); |
| |
| SkString str; |
| |
| const SkClipStack* clipStack = gDumpCanvas->getClipStack(); |
| if (clipStack) { |
| SkClipStack::Iter iter(*clipStack, SkClipStack::Iter::kBottom_IterStart); |
| const SkClipStack::Element* elem; |
| double y = 0; |
| int total = 0; |
| while ((elem = iter.next()) != NULL) { |
| total++; |
| y += 30; |
| |
| switch (elem->getType()) { |
| case SkClipStack::Element::kRect_Type: |
| canvas.drawRect(elem->getRect(), blueBorder); |
| canvas.drawText("Rect Clip", strlen("Rect Clip"), |
| SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); |
| break; |
| case SkClipStack::Element::kPath_Type: |
| canvas.drawPath(elem->getPath(), blueBorder); |
| canvas.drawText("Path Clip", strlen("Path Clip"), |
| SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); |
| break; |
| case SkClipStack::Element::kEmpty_Type: |
| canvas.drawText("Empty Clip!!!", strlen("Empty Clip!!!"), |
| SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); |
| break; |
| default: |
| canvas.drawText("Unknown Clip!!!", strlen("Unknown Clip!!!"), |
| SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); |
| break; |
| } |
| } |
| |
| y += 30; |
| str.printf("Number of clips in stack: %i", total); |
| canvas.drawText(str.c_str(), str.size(), |
| SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); |
| } |
| |
| const SkRegion& clipRegion = gDumpCanvas->getTotalClip(); |
| SkPath clipPath; |
| if (clipRegion.getBoundaryPath(&clipPath)) { |
| SkPaint redBorder; |
| redBorder.setColor(SK_ColorRED); |
| redBorder.setStyle(SkPaint::kStroke_Style); |
| canvas.drawPath(clipPath, redBorder); |
| } |
| |
| canvas.flush(); |
| |
| SkString out; |
| |
| // TODO(edisonn): overlay on top of image inf about the clip , grafic state, the stack |
| |
| out.appendf("/tmp/log_step_by_step/step-%i-%s.png", gOpCounter, gLastKeyword.c_str()); |
| |
| SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100); |
| } |
| } |
| |
| if (token->fType == kKeyword_TokenType && token->fKeyword && token->fKeywordLength > 0) { |
| gLastKeyword.set(token->fKeyword, token->fKeywordLength); |
| } else { |
| gLastKeyword.reset(); |
| } |
| #endif |
| } |