Update the SkDocument interface to allow for 1) abort won't emit pdf, 2) close can report success/f…

gm/gmmain.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * Code for the "gm" (Golden Master) rendering comparison tool.
  *
  * If you make changes to this, re-run the self-tests at gm/tests/run.sh
  * to make sure they still pass... you may need to change the expected
  * results of the self-test.
  */
 
 #include "gm.h"
 #include "gm_error.h"
 #include "gm_expectations.h"
 #include "system_preferences.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
 #include "SkCommandLineFlags.h"
 #include "SkData.h"
 #include "SkDeferredCanvas.h"
 #include "SkDevice.h"
+#include "SkDocument.h"
 #include "SkDrawFilter.h"
 #include "SkForceLinking.h"
 #include "SkGPipe.h"
 #include "SkGraphics.h"
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
 #include "SkOSFile.h"
 #include "SkPDFRasterizer.h"
 #include "SkPicture.h"
 #include "SkRefCnt.h"
+#include "SkScalar.h"
 #include "SkStream.h"
 #include "SkTArray.h"
 #include "SkTDict.h"
 #include "SkTileGridPicture.h"
 #include "SamplePipeControllers.h"
 
 #ifdef SK_DEBUG
 static const bool kDebugOnly = true;
 #else
 static const bool kDebugOnly = false;
@@ skipping 562 matching lines @@
             }
         } else {
             SkCanvas canvas(*bitmap);
             installFilter(&canvas);
             canvas.scale(scale, scale);
             canvas.drawPicture(*pict);
             complete_bitmap(bitmap);
         }
     }
 
-    static void generate_pdf(GM* gm, SkDynamicMemoryWStream& pdf) {
+    static bool generate_pdf(GM* gm, SkDynamicMemoryWStream& pdf) {
 #ifdef SK_SUPPORT_PDF
         SkMatrix initialTransform = gm->getInitialTransform();
-        SkISize pageSize = gm->getISize();
-        SkPDFDevice* dev = NULL;
-        if (initialTransform.isIdentity()) {
-            dev = new SkPDFDevice(pageSize, pageSize, initialTransform);
-        } else {
-            SkRect content = SkRect::MakeWH(SkIntToScalar(pageSize.width()),
-                                            SkIntToScalar(pageSize.height()));
-            initialTransform.mapRect(&content);
-            content.intersect(0, 0, SkIntToScalar(pageSize.width()),
-                              SkIntToScalar(pageSize.height()));
-            SkISize contentSize =
-                SkISize::Make(SkScalarRoundToInt(content.width()),
-                              SkScalarRoundToInt(content.height()));
-            dev = new SkPDFDevice(pageSize, contentSize, initialTransform);
-        }
-        dev->setDCTEncoder(encode_to_dct_data);
-        SkAutoUnref aur(dev);
+        SkISize pageISize = gm->getISize();
+        SkSize pageSize = SkSize::Make(SkIntToScalar(pageISize.width()),
+                                       SkIntToScalar(pageISize.height()));
+        SkAutoTUnref<SkDocument> pdfDoc(SkDocument::CreatePDF(&pdf, NULL, encode_to_dct_data));

[reed1, 2013/10/07 13:24:54]

Can we move the SUPPORT_PDF check to inside CreatePDF(), so that the caller just
needs to do a NULL check on the returned document?

[edisonn, 2013/10/07 19:29:06]

not really. Sk_SUPPORT_PDF is defined for dependent projects, not for pdf lib
itself.

+        SkCanvas* canvas = NULL;
+        canvas = pdfDoc->beginPage(pageSize);
+        canvas->setMatrix(initialTransform);

[reed1, 2013/10/07 13:24:54]

can this be concat instead of setMatrix? The latter is very unfriendly, since it
completely ignores the state of the canvas as returned by beginPage.

[edisonn, 2013/10/07 19:29:06]

Done.

 
-        SkCanvas c(dev);
-        invokeGM(gm, &c, true, false);
+        invokeGM(gm, canvas, true, false);
 
-        SkPDFDocument doc;
-        doc.appendPage(dev);
-        doc.emitPDF(&pdf);
+        return pdfDoc->close();
 #endif
     }
 
     static void generate_xps(GM* gm, SkDynamicMemoryWStream& xps) {
 #ifdef SK_SUPPORT_XPS
         SkISize size = gm->getISize();
 
         SkSize trimSize = SkSize::Make(SkIntToScalar(size.width()),
                                        SkIntToScalar(size.height()));
         static const SkScalar inchesPerMeter = SkScalarDiv(10000, 254);
@@ skipping 372 matching lines @@
             BitmapAndDigest bitmapAndDigest(*bitmap);
             errors.add(compare_test_results_to_stored_expectations(
                            gm, gRec, gRec.fName, &bitmapAndDigest));
 
             if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
                 path = make_bitmap_filename(writePath, gm->shortName(), gRec.fName,
                                             "", bitmapAndDigest.fDigest);
                 errors.add(write_bitmap(path, bitmapAndDigest.fBitmap));
             }
         } else if (gRec.fBackend == kPDF_Backend) {
-            generate_pdf(gm, document);
+            if (!generate_pdf(gm, document)) {
+                errors.add(kRenderPdfFailed_ErrorType);
+            } else {
+                SkAutoTUnref<SkStreamAsset> documentStream(document.detachAsStream());
+                if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
+                    path = make_filename(writePath, gm->shortName(), gRec.fName, "", "pdf");
+                    errors.add(write_document(path, documentStream));
+                }
 
-            SkAutoTUnref<SkStreamAsset> documentStream(document.detachAsStream());
-            if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
-                path = make_filename(writePath, gm->shortName(), gRec.fName, "", "pdf");
-                errors.add(write_document(path, documentStream));
-            }
+                if (!(gm->getFlags() & GM::kSkipPDFRasterization_Flag)) {
+                    for (int i = 0; i < pdfRasterizers.count(); i++) {
+                        SkBitmap pdfBitmap;
+                        SkASSERT(documentStream->rewind());
+                        bool success = (*pdfRasterizers[i]->fRasterizerFunction)(
+                                documentStream.get(), &pdfBitmap);
+                        if (!success) {
+                            gm_fprintf(stderr, "FAILED to render PDF for %s using renderer %s\n",
+                                       gm->shortName(),
+                                       pdfRasterizers[i]->fName);
+                            continue;
+                        }
 
-            if (!(gm->getFlags() & GM::kSkipPDFRasterization_Flag)) {
-                for (int i = 0; i < pdfRasterizers.count(); i++) {
-                    SkBitmap pdfBitmap;
-                    SkASSERT(documentStream->rewind());
-                    bool success = (*pdfRasterizers[i]->fRasterizerFunction)(
-                            documentStream.get(), &pdfBitmap);
-                    if (!success) {
-                        gm_fprintf(stderr, "FAILED to render PDF for %s using renderer %s\n",
-                                   gm->shortName(),
-                                   pdfRasterizers[i]->fName);
-                        continue;
+                        SkString configName(gRec.fName);
+                        configName.append("-");
+                        configName.append(pdfRasterizers[i]->fName);
+
+                        BitmapAndDigest bitmapAndDigest(pdfBitmap);
+                        errors.add(compare_test_results_to_stored_expectations(
+                                   gm, gRec, configName.c_str(), &bitmapAndDigest));
+
+                        if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
+                            path = make_bitmap_filename(writePath, gm->shortName(),
+                                                        configName.c_str(),
+                                                        "", bitmapAndDigest.fDigest);
+                            errors.add(write_bitmap(path, bitmapAndDigest.fBitmap));
+                        }
                     }
-
-                    SkString configName(gRec.fName);
-                    configName.append("-");
-                    configName.append(pdfRasterizers[i]->fName);
-
-                    BitmapAndDigest bitmapAndDigest(pdfBitmap);
-                    errors.add(compare_test_results_to_stored_expectations(
-                               gm, gRec, configName.c_str(), &bitmapAndDigest));
-
-                    if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
-                        path = make_bitmap_filename(writePath, gm->shortName(), configName.c_str(),
-                                                    "", bitmapAndDigest.fDigest);
-                        errors.add(write_bitmap(path, bitmapAndDigest.fBitmap));
-                    }
+                } else {
+                    errors.add(kIntentionallySkipped_ErrorType);
                 }
-            } else {
-                errors.add(kIntentionallySkipped_ErrorType);
             }
         } else if (gRec.fBackend == kXPS_Backend) {
             generate_xps(gm, document);
             SkAutoTUnref<SkStreamAsset> documentStream(document.detachAsStream());
 
             errors.add(compare_test_results_to_stored_expectations(
                            gm, gRec, gRec.fName, NULL));
 
             if (writePath && (gRec.fFlags & kWrite_ConfigFlag)) {
                 path = make_filename(writePath, gm->shortName(), gRec.fName, "", "xps");
@@ skipping 1187 matching lines @@
     if (FLAGS_forceBWtext) {
         canvas->setDrawFilter(SkNEW(BWTextDrawFilter))->unref();
     }
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif