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Unified Diff: experimental/PdfViewer/src/SkPdfDiffEncoder.cpp

Issue 80463005: Separate and update PDF_DIFF_TRACE_IN_PNG (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: rebase Created 7 years ago
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Index: experimental/PdfViewer/src/SkPdfDiffEncoder.cpp
diff --git a/experimental/PdfViewer/src/SkPdfDiffEncoder.cpp b/experimental/PdfViewer/src/SkPdfDiffEncoder.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..5d4c4322dc59aa94119192487cc2cab59010bf3c
--- /dev/null
+++ b/experimental/PdfViewer/src/SkPdfDiffEncoder.cpp
@@ -0,0 +1,131 @@
+/*
+ * 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
+}
+
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