Revert of Sketch DM refactor.

dm/DMPDFTask.cpp

Index: dm/DMPDFTask.cpp
diff --git a/dm/DMPDFTask.cpp b/dm/DMPDFTask.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3102478c2fe5af2fb92bd568da1fed0bb413c284
--- /dev/null
+++ b/dm/DMPDFTask.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "DMPDFTask.h"
+#include "DMPDFRasterizeTask.h"
+#include "DMUtil.h"
+#include "DMWriteTask.h"
+#include "SkCommandLineFlags.h"
+#include "SkDocument.h"
+
+// The PDF backend is not threadsafe.  If you run dm with --pdf repeatedly, you
+// will quickly find yourself crashed.  (while catchsegv out/Release/dm;; end).
+//
+// TODO(mtklein): re-enable by default, maybe moving to its own single thread.
+DEFINE_bool(pdf, false, "PDF backend master switch.");
+
+namespace DM {
+
+PDFTask::PDFTask(const char* config,
+                 Reporter* reporter,
+                 TaskRunner* taskRunner,
+                 skiagm::GMRegistry::Factory factory,
+                 RasterizePdfProc rasterizePdfProc)
+    : CpuTask(reporter, taskRunner)
+    , fGM(factory(NULL))
+    , fName(UnderJoin(fGM->getName(), config))
+    , fRasterize(rasterizePdfProc) {}
+
+PDFTask::PDFTask(Reporter* reporter,
+                 TaskRunner* taskRunner,
+                 const SkPicture* picture,
+                 SkString filename,
+                 RasterizePdfProc rasterizePdfProc)
+    : CpuTask(reporter, taskRunner)
+    , fPicture(SkRef(picture))
+    , fName(UnderJoin(FileToTaskName(filename).c_str(), "pdf"))
+    , fRasterize(rasterizePdfProc) {}
+
+namespace {
+
+class SinglePagePDF {
+public:
+    SinglePagePDF(SkScalar width, SkScalar height)
+        : fDocument(SkDocument::CreatePDF(&fWriteStream))
+        , fCanvas(fDocument->beginPage(width, height)) {}
+
+    SkCanvas* canvas() { return fCanvas; }
+
+    SkStreamAsset* end() {
+        fCanvas->flush();
+        fDocument->endPage();
+        fDocument->close();
+        return fWriteStream.detachAsStream();
+    }
+
+private:
+    SkDynamicMemoryWStream fWriteStream;
+    SkAutoTUnref<SkDocument> fDocument;
+    SkCanvas* fCanvas;
+};
+
+}  // namespace
+
+void PDFTask::draw() {
+    SkAutoTDelete<SkStreamAsset> pdfData;
+    bool rasterize = true;
+    if (fGM.get()) {
+        rasterize = 0 == (fGM->getFlags() & skiagm::GM::kSkipPDFRasterization_Flag);
+        SinglePagePDF pdf(fGM->width(), fGM->height());
+        CanvasPreflight(pdf.canvas());
+        //TODO(mtklein): GM doesn't do this.  Why not?
+        //pdf.canvas()->concat(fGM->getInitialTransform());
+        fGM->draw(pdf.canvas());
+        pdfData.reset(pdf.end());
+    } else {
+        SinglePagePDF pdf(fPicture->cullRect().width(), fPicture->cullRect().height());
+        CanvasPreflight(pdf.canvas());
+        fPicture->playback(pdf.canvas());
+        pdfData.reset(pdf.end());
+    }
+
+    SkASSERT(pdfData.get());
+    if (rasterize) {
+        this->spawnChild(SkNEW_ARGS(PDFRasterizeTask,
+                                    (*this, pdfData->duplicate(), fRasterize)));
+    }
+    const char* sourceType = fGM.get() ? "GM" : "SKP";
+    this->spawnChild(SkNEW_ARGS(WriteTask,
+                                (*this, sourceType, pdfData->duplicate(), ".pdf")));
+}
+
+bool PDFTask::shouldSkip() const {
+    if (!FLAGS_pdf) {
+        return true;
+    }
+    if (fGM.get() && 0 != (fGM->getFlags() & skiagm::GM::kSkipPDF_Flag)) {
+        return true;
+    }
+    return false;
+}
+
+}  // namespace DM