Add an option to have a PdfViewer in SampleApp. Add a parameter --pdfDir to pass the dir with pdfs.…

samplecode/SamplePdfFileViewer.cpp

+
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifdef SAMPLE_PDF_FILE_VIEWER
+
+#include "SampleCode.h"
+#include "SkDumpCanvas.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+#include "Sk64.h"
+#include "SkGradientShader.h"
+#include "SkGraphics.h"
+#include "SkImageDecoder.h"
+#include "SkOSFile.h"
+#include "SkPath.h"
+#include "SkPicture.h"
+#include "SkRandom.h"
+#include "SkRegion.h"
+#include "SkShader.h"
+#include "SkUtils.h"
+#include "SkColorPriv.h"
+#include "SkColorFilter.h"
+#include "SkTime.h"
+#include "SkTypeface.h"
+#include "SkXfermode.h"
+
+#include "SkPdfParser.h"
+
+class PdfFileViewer : public SampleView {
+    SkString    fFilename;
+    SkPicture*  fPicture;  // TODO(edisonn): multiple pages, one page / picture, make it an array
+
+    static SkPicture* LoadPdf(const char path[]) {
+        SkPicture* pic = NULL;
+
+        SkPdfDoc doc(path);
+        if (doc.pages()) {
+            pic = SkNEW(SkPicture);
+            SkCanvas* canvas = pic->beginRecording((int)doc.width(0), (int)doc.height(0));
+            doc.drawPage(0, canvas);
+            pic->endRecording();
+        }
+        return pic;
+    }
+
+public:
+    PdfFileViewer(const char name[] = NULL) : fFilename(name) {
+        fPicture = NULL;
+    }
+
+    virtual ~PdfFileViewer() {
+        SkSafeUnref(fPicture);
+    }
+
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt) {
+        if (SampleCode::TitleQ(*evt)) {
+            SkString name("P:");
+            const char* basename = strrchr(fFilename.c_str(), SkPATH_SEPARATOR);
+            name.append(basename ? basename+1: fFilename.c_str());
+            SampleCode::TitleR(evt, name.c_str());
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+
+    virtual bool onEvent(const SkEvent& evt) {
+        // TODO(edisonn): add here event handlers to disable clipping, or to show helpful info
+        // like pdf object from click, ...
+        // TODO(edisonn): first, next, prev, last page navigation + slideshow
+        return this->INHERITED::onEvent(evt);
+    }
+
+    virtual void onDrawContent(SkCanvas* canvas) {
+        if (!fPicture) {
+            fPicture = LoadPdf(fFilename.c_str());
+        }
+        if (fPicture) {
+            canvas->drawPicture(*fPicture);
+        }
+    }
+
+private:
+    typedef SampleView INHERITED;
+};
+
+SampleView* CreateSamplePdfFileViewer(const char filename[]);
+SampleView* CreateSamplePdfFileViewer(const char filename[]) {
+    return new PdfFileViewer(filename);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+#if 0
+static SkView* MyFactory() { return new PdfFileViewer; }
+static SkViewRegister reg(MyFactory);
+#endif
+
+#endif  // SAMPLE_PDF_FILE_VIEWER