+ This CL pulls in all the PDF code (i.e. we are now compiling the PDF backend on Chrome).

+ Add a Metafile to contain Skia PDF content.
+ Add a VectorPlatformDevice for use with the Skia PDF backend.

BUG=62889
TEST=NONE

Review URL: http://codereview.chromium.org/6499024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@80841 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 423 insertions, 0 deletions

diff --git a/skia/config/SkUserConfig.h b/skia/config/SkUserConfig.h
index d9746b7..a7d830a 100644
--- a/skia/config/SkUserConfig.h
+++ b/skia/config/SkUserConfig.h
@@ -113,6 +113,33 @@
  */
 //#define SK_USE_RUNTIME_GLOBALS
 
+/*  If zlib is available and you want to support the flate compression
+    algorithm (used in PDF generation), define SK_ZLIB_INCLUDE to be the
+    include path.
+ */
+//#define SK_ZLIB_INCLUDE <zlib.h>
+#if defined(USE_SYSTEM_ZLIB)
+#define SK_ZLIB_INCLUDE <zlib.h>
+#else
+#define SK_ZLIB_INCLUDE "third_party/zlib/zlib.h"
+#define MOZ_Z_inflate inflate
+#define MOZ_Z_inflateInit_ inflateInit_
+#define MOZ_Z_inflateEnd inflateEnd
+#define MOZ_Z_deflate deflate
+#define MOZ_Z_deflateInit_ deflateInit_
+#define MOZ_Z_deflateEnd deflateEnd
+#endif
+
+/*  Define this to allow PDF scalars above 32k.  The PDF/A spec doesn't allow
+    them, but modern PDF interpreters should handle them just fine.
+ */
+//#define SK_ALLOW_LARGE_PDF_SCALARS
+
+/*  Define this to remove dimension checks on bitmaps. Not all blits will be
+    correct yet, so this is mostly for debugging the implementation.
+ */
+//#define SK_ALLOW_OVER_32K_BITMAPS
+
 
 /*  To write debug messages to a console, skia will call SkDebugf(...) following
     printf conventions (e.g. const char* format, ...). If you want to redirect
diff --git a/skia/ext/vector_platform_device_skia.cc b/skia/ext/vector_platform_device_skia.cc
new file mode 100644
index 0000000..8c064cb
--- /dev/null
+++ b/skia/ext/vector_platform_device_skia.cc
@@ -0,0 +1,254 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "skia/ext/vector_platform_device_skia.h"
+
+#include "skia/ext/bitmap_platform_device.h"
+#include "third_party/skia/include/core/SkClipStack.h"
+#include "third_party/skia/include/core/SkDraw.h"
+#include "third_party/skia/include/core/SkRect.h"
+#include "third_party/skia/include/core/SkRegion.h"
+#include "third_party/skia/include/core/SkScalar.h"
+
+namespace skia {
+
+SkDevice* VectorPlatformDeviceSkiaFactory::newDevice(SkCanvas* noUsed,
+                                                     SkBitmap::Config config,
+                                                     int width, int height,
+                                                     bool isOpaque,
+                                                     bool isForLayer) {
+  SkASSERT(config == SkBitmap::kARGB_8888_Config);
+  SkPDFDevice::OriginTransform flip = SkPDFDevice::kFlip_OriginTransform;
+  if (isForLayer)
+    flip = SkPDFDevice::kNoFlip_OriginTransform;
+  return new VectorPlatformDeviceSkia(width, height, flip);
+}
+
+static inline SkBitmap makeABitmap(int width, int height) {
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kNo_Config, width, height);
+  return bitmap;
+}
+
+VectorPlatformDeviceSkia::VectorPlatformDeviceSkia(
+    int width, int height, SkPDFDevice::OriginTransform flip)
+    : PlatformDevice(makeABitmap(width, height)),
+      pdf_device_(new SkPDFDevice(width, height, flip)) {
+  pdf_device_->unref();  // SkRefPtr and new both took a reference.
+  base_transform_.reset();
+}
+
+VectorPlatformDeviceSkia::~VectorPlatformDeviceSkia() {
+}
+
+bool VectorPlatformDeviceSkia::IsVectorial() {
+  return true;
+}
+
+bool VectorPlatformDeviceSkia::IsNativeFontRenderingAllowed() {
+  return false;
+}
+
+PlatformDevice::PlatformSurface VectorPlatformDeviceSkia::BeginPlatformPaint() {
+  // Even when drawing a vector representation of the page, we have to
+  // provide a raster surface for plugins to render into - they don't have
+  // a vector interface.  Therefore we create a BitmapPlatformDevice here
+  // and return the context from it, then layer on the raster data as an
+  // image in EndPlatformPaint.
+  DCHECK(raster_surface_ == NULL);
+#if defined(OS_WIN)
+  raster_surface_ = BitmapPlatformDevice::create(pdf_device_->width(),
+                                                 pdf_device_->height(),
+                                                 false, /* not opaque */
+                                                 NULL);
+#elif defined(OS_LINUX)
+  raster_surface_ = BitmapPlatformDevice::Create(pdf_device_->width(),
+                                                 pdf_device_->height(),
+                                                 false /* not opaque */);
+#endif
+  raster_surface_->unref();  // SkRefPtr and create both took a reference.
+
+  SkCanvas canvas(raster_surface_.get());
+  SkPaint black;
+  black.setColor(SK_ColorBLACK);
+  canvas.drawPaint(black);
+  return raster_surface_->BeginPlatformPaint();
+}
+
+void VectorPlatformDeviceSkia::EndPlatformPaint() {
+  DCHECK(raster_surface_ != NULL);
+  SkPaint paint;
+  pdf_device_->drawSprite(SkDraw(),
+                          raster_surface_->accessBitmap(false),
+                          base_transform_.getTranslateX(),
+                          base_transform_.getTranslateY(),
+                          paint);
+  raster_surface_ = NULL;
+}
+
+SkDeviceFactory* VectorPlatformDeviceSkia::getDeviceFactory() {
+  return SkNEW(VectorPlatformDeviceSkiaFactory);
+}
+
+uint32_t VectorPlatformDeviceSkia::getDeviceCapabilities() {
+  return kVector_Capability;
+}
+
+int VectorPlatformDeviceSkia::width() const {
+  return pdf_device_->width();
+}
+
+int VectorPlatformDeviceSkia::height() const {
+  return pdf_device_->height();
+}
+
+void VectorPlatformDeviceSkia::setMatrixClip(const SkMatrix& matrix,
+                                             const SkRegion& region,
+                                             const SkClipStack& stack) {
+  SkMatrix transform = base_transform_;
+  transform.preConcat(matrix);
+
+  DCHECK(SkMatrix::kTranslate_Mask == base_transform_.getType() ||
+      SkMatrix::kIdentity_Mask == base_transform_.getType());
+  SkRegion clip = region;
+  clip.translate(base_transform_.getTranslateX(),
+                 base_transform_.getTranslateY());
+
+  pdf_device_->setMatrixClip(transform, clip, stack);
+}
+
+bool VectorPlatformDeviceSkia::readPixels(const SkIRect& srcRect,
+                                          SkBitmap* bitmap) {
+  return false;
+}
+
+void VectorPlatformDeviceSkia::drawPaint(const SkDraw& draw,
+                                         const SkPaint& paint) {
+  pdf_device_->drawPaint(draw, paint);
+}
+
+void VectorPlatformDeviceSkia::drawPoints(const SkDraw& draw,
+                                          SkCanvas::PointMode mode,
+                                          size_t count, const SkPoint pts[],
+                                          const SkPaint& paint) {
+  pdf_device_->drawPoints(draw, mode, count, pts, paint);
+}
+
+void VectorPlatformDeviceSkia::drawRect(const SkDraw& draw,
+                                        const SkRect& rect,
+                                        const SkPaint& paint) {
+  pdf_device_->drawRect(draw, rect, paint);
+}
+
+void VectorPlatformDeviceSkia::drawPath(const SkDraw& draw,
+                                        const SkPath& path,
+                                        const SkPaint& paint,
+                                        const SkMatrix* prePathMatrix,
+                                        bool pathIsMutable) {
+  pdf_device_->drawPath(draw, path, paint, prePathMatrix, pathIsMutable);
+}
+
+void VectorPlatformDeviceSkia::drawBitmap(const SkDraw& draw,
+                                          const SkBitmap& bitmap,
+                                          const SkIRect* srcRectOrNull,
+                                          const SkMatrix& matrix,
+                                          const SkPaint& paint) {
+  pdf_device_->drawBitmap(draw, bitmap, srcRectOrNull, matrix, paint);
+}
+
+void VectorPlatformDeviceSkia::drawSprite(const SkDraw& draw,
+                                          const SkBitmap& bitmap,
+                                          int x, int y,
+                                          const SkPaint& paint) {
+  pdf_device_->drawSprite(draw, bitmap, x, y, paint);
+}
+
+void VectorPlatformDeviceSkia::drawText(const SkDraw& draw,
+                                        const void* text,
+                                        size_t byteLength,
+                                        SkScalar x,
+                                        SkScalar y,
+                                        const SkPaint& paint) {
+  pdf_device_->drawText(draw, text, byteLength, x, y, paint);
+}
+
+void VectorPlatformDeviceSkia::drawPosText(const SkDraw& draw,
+                                           const void* text,
+                                           size_t len,
+                                           const SkScalar pos[],
+                                           SkScalar constY,
+                                           int scalarsPerPos,
+                                           const SkPaint& paint) {
+  pdf_device_->drawPosText(draw, text, len, pos, constY, scalarsPerPos, paint);
+}
+
+void VectorPlatformDeviceSkia::drawTextOnPath(const SkDraw& draw,
+                                              const void* text,
+                                              size_t len,
+                                              const SkPath& path,
+                                              const SkMatrix* matrix,
+                                              const SkPaint& paint) {
+  pdf_device_->drawTextOnPath(draw, text, len, path, matrix, paint);
+}
+
+void VectorPlatformDeviceSkia::drawVertices(const SkDraw& draw,
+                                            SkCanvas::VertexMode vmode,
+                                            int vertexCount,
+                                            const SkPoint vertices[],
+                                            const SkPoint texs[],
+                                            const SkColor colors[],
+                                            SkXfermode* xmode,
+                                            const uint16_t indices[],
+                                            int indexCount,
+                                            const SkPaint& paint) {
+  pdf_device_->drawVertices(draw, vmode, vertexCount, vertices, texs, colors,
+                            xmode, indices, indexCount, paint);
+}
+
+void VectorPlatformDeviceSkia::drawDevice(const SkDraw& draw,
+                                          SkDevice* device,
+                                          int x,
+                                          int y,
+                                          const SkPaint& paint) {
+  SkDevice* real_device = device;
+  if ((device->getDeviceCapabilities() & kVector_Capability)) {
+    // Assume that a vectorial device means a VectorPlatformDeviceSkia, we need
+    // to unwrap the embedded SkPDFDevice.
+    VectorPlatformDeviceSkia* vector_device =
+        static_cast<VectorPlatformDeviceSkia*>(device);
+    real_device = vector_device->pdf_device_.get();
+  }
+  pdf_device_->drawDevice(draw, real_device, x, y, paint);
+}
+
+#if defined(OS_WIN)
+void VectorPlatformDeviceSkia::drawToHDC(HDC dc,
+                                         int x,
+                                         int y,
+                                         const RECT* src_rect) {
+  SkASSERT(false);
+}
+#endif
+
+void VectorPlatformDeviceSkia::setInitialTransform(int xOffset, int yOffset,
+                                                   float scale_factor) {
+  // TODO(vandebo) Supporting a scale factor is some work because we have to
+  // transform both matrices and clips that come in, but Region only supports
+  // translation.  Instead, we could change SkPDFDevice to include it in the
+  // initial transform.  Delay that work until we would use it.  Also checked
+  // in setMatrixClip.
+  DCHECK_EQ(1.0f, scale_factor);
+
+  base_transform_.setTranslate(xOffset, yOffset);
+  SkScalar scale = SkFloatToScalar(scale_factor);
+  base_transform_.postScale(scale, scale);
+
+  SkMatrix matrix;
+  matrix.reset();
+  SkRegion region;
+  SkClipStack stack;
+  setMatrixClip(matrix, region, stack);
+}
+
+}  // namespace skia
diff --git a/skia/ext/vector_platform_device_skia.h b/skia/ext/vector_platform_device_skia.h
new file mode 100644
index 0000000..38cf0c5
--- /dev/null
+++ b/skia/ext/vector_platform_device_skia.h
@@ -0,0 +1,106 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
+#define SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "skia/ext/platform_device.h"
+#include "third_party/skia/include/core/SkMatrix.h"
+#include "third_party/skia/include/core/SkRefCnt.h"
+#include "third_party/skia/include/core/SkTScopedPtr.h"
+#include "third_party/skia/include/pdf/SkPDFDevice.h"
+
+class SkClipStack;
+struct SkIRect;
+struct SkRect;
+
+namespace skia {
+
+class BitmapPlatformDevice;
+
+class VectorPlatformDeviceSkiaFactory : public SkDeviceFactory {
+ public:
+  virtual SkDevice* newDevice(SkCanvas* notUsed, SkBitmap::Config config,
+                              int width, int height, bool isOpaque,
+                              bool isForLayer);
+};
+
+class VectorPlatformDeviceSkia : public PlatformDevice {
+ public:
+  VectorPlatformDeviceSkia(int width, int height,
+                           SkPDFDevice::OriginTransform flip);
+
+  ~VectorPlatformDeviceSkia();
+
+  SkPDFDevice* PdfDevice() { return pdf_device_.get(); }
+
+  // PlatformDevice methods.
+  virtual bool IsVectorial();
+  virtual bool IsNativeFontRenderingAllowed();
+
+  virtual PlatformSurface BeginPlatformPaint();
+  virtual void EndPlatformPaint();
+
+  // SkDevice methods.
+  virtual SkDeviceFactory* getDeviceFactory();
+  virtual uint32_t getDeviceCapabilities();
+
+  virtual int width() const;
+  virtual int height() const;
+  virtual void setMatrixClip(const SkMatrix& matrix, const SkRegion& region,
+                             const SkClipStack& stack);
+  virtual bool readPixels(const SkIRect& srcRect, SkBitmap* bitmap);
+
+  virtual void drawPaint(const SkDraw& draw, const SkPaint& paint);
+  virtual void drawPoints(const SkDraw& draw, SkCanvas::PointMode mode,
+                          size_t count, const SkPoint[], const SkPaint& paint);
+  virtual void drawRect(const SkDraw& draw, const SkRect& rect,
+                        const SkPaint& paint);
+  virtual void drawPath(const SkDraw& draw, const SkPath& path,
+                        const SkPaint& paint, const SkMatrix* prePathMatrix,
+                        bool pathIsMutable);
+  virtual void drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
+                          const SkIRect* srcRectOrNull, const SkMatrix& matrix,
+                          const SkPaint& paint);
+  virtual void drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
+                          int x, int y, const SkPaint& paint);
+  virtual void drawText(const SkDraw& draw, const void* text, size_t len,
+                        SkScalar x, SkScalar y, const SkPaint& paint);
+  virtual void drawPosText(const SkDraw& draw, const void* text, size_t len,
+                           const SkScalar pos[], SkScalar constY,
+                           int scalarsPerPos, const SkPaint& paint);
+  virtual void drawTextOnPath(const SkDraw& draw, const void* text, size_t len,
+                              const SkPath& path, const SkMatrix* matrix,
+                              const SkPaint& paint);
+  virtual void drawVertices(const SkDraw& draw, SkCanvas::VertexMode,
+                            int vertexCount, const SkPoint verts[],
+                            const SkPoint texs[], const SkColor colors[],
+                            SkXfermode* xmode, const uint16_t indices[],
+                            int indexCount, const SkPaint& paint);
+  virtual void drawDevice(const SkDraw& draw, SkDevice*, int x, int y,
+                          const SkPaint&);
+
+#if defined(OS_WIN)
+  virtual void drawToHDC(HDC dc, int x, int y, const RECT* src_rect);
+#endif
+
+  // Our own methods.
+
+  // This needs to be called before anything is drawn.
+  void setInitialTransform(int xOffset, int yOffset, float scale_factor);
+
+ private:
+  SkRefPtr<SkPDFDevice> pdf_device_;
+  SkMatrix base_transform_;
+  SkRefPtr<BitmapPlatformDevice> raster_surface_;
+
+  DISALLOW_COPY_AND_ASSIGN(VectorPlatformDeviceSkia);
+};
+
+}  // namespace skia
+
+#endif  // SKIA_EXT_VECTOR_PLATFORM_DEVICE_SKIA_H_
diff --git a/skia/skia.gyp b/skia/skia.gyp
index 45d2a9a..c42d7ff 100644
--- a/skia/skia.gyp
+++ b/skia/skia.gyp
@@ -325,6 +325,7 @@
         '../third_party/skia/src/core/SkFP.h',
         '../third_party/skia/src/core/SkFilterProc.cpp',
         '../third_party/skia/src/core/SkFilterProc.h',
+        '../third_party/skia/src/core/SkFlate.cpp',
         '../third_party/skia/src/core/SkFlattenable.cpp',
         '../third_party/skia/src/core/SkFloat.cpp',
         '../third_party/skia/src/core/SkFloat.h',
@@ -462,6 +463,19 @@
 
         '../third_party/skia/src/opts/opts_check_SSE2.cpp',
 
+        '../third_party/skia/src/pdf/SkPDFCatalog.cpp',
+        '../third_party/skia/src/pdf/SkPDFDevice.cpp',
+        '../third_party/skia/src/pdf/SkPDFDocument.cpp',
+        '../third_party/skia/src/pdf/SkPDFFont.cpp',
+        '../third_party/skia/src/pdf/SkPDFFormXObject.cpp',
+        '../third_party/skia/src/pdf/SkPDFGraphicState.cpp',
+        '../third_party/skia/src/pdf/SkPDFImage.cpp',
+        '../third_party/skia/src/pdf/SkPDFPage.cpp',
+        '../third_party/skia/src/pdf/SkPDFShader.cpp',
+        '../third_party/skia/src/pdf/SkPDFStream.cpp',
+        '../third_party/skia/src/pdf/SkPDFTypes.cpp',
+        '../third_party/skia/src/pdf/SkPDFUtils.cpp',
+
         #'../third_party/skia/src/ports/SkFontHost_FONTPATH.cpp',
         '../third_party/skia/src/ports/SkFontHost_FreeType.cpp',
         #'../third_party/skia/src/ports/SkFontHost_android.cpp',
@@ -521,6 +535,7 @@
         '../third_party/skia/include/core/SkEndian.h',
         '../third_party/skia/include/core/SkFDot6.h',
         '../third_party/skia/include/core/SkFixed.h',
+        '../third_party/skia/include/core/SkFlate.h',
         '../third_party/skia/include/core/SkFlattenable.h',
         '../third_party/skia/include/core/SkFloatBits.h',
         '../third_party/skia/include/core/SkFloatingPoint.h',
@@ -605,6 +620,19 @@
         '../third_party/skia/include/gpu/SkGr.h',
         '../third_party/skia/include/gpu/SkGrTexturePixelRef.h',
 
+        '../third_party/skia/include/pdf/SkPDFCatalog.h',
+        '../third_party/skia/include/pdf/SkPDFDevice.h',
+        '../third_party/skia/include/pdf/SkPDFDocument.h',
+        '../third_party/skia/include/pdf/SkPDFFont.h',
+        '../third_party/skia/include/pdf/SkPDFFormXObject.h',
+        '../third_party/skia/include/pdf/SkPDFGraphicState.h',
+        '../third_party/skia/include/pdf/SkPDFImage.h',
+        '../third_party/skia/include/pdf/SkPDFPage.h',
+        '../third_party/skia/include/pdf/SkPDFShader.h',
+        '../third_party/skia/include/pdf/SkPDFStream.h',
+        '../third_party/skia/include/pdf/SkPDFTypes.h',
+        '../third_party/skia/include/pdf/SkPDFUtils.h',
+
         '../third_party/skia/include/ports/SkStream_Win.h',
         '../third_party/skia/include/ports/SkTypeface_win.h',
 
@@ -654,6 +682,8 @@
         'ext/vector_platform_device_cairo_linux.h',
         'ext/vector_platform_device_emf_win.cc',
         'ext/vector_platform_device_emf_win.h',
+        'ext/vector_platform_device_skia.cc',
+        'ext/vector_platform_device_skia.h',
       ],
       'include_dirs': [
         '..',
@@ -663,6 +693,7 @@
         '../third_party/skia/include/effects',
         '../third_party/skia/include/gpu',
         '../third_party/skia/include/images',
+        '../third_party/skia/include/pdf',
         '../third_party/skia/include/ports',
         '../third_party/skia/include/utils',
         '../third_party/skia/gpu/include',
@@ -752,6 +783,10 @@
           'defines': [
             'SK_BUILD_FOR_MAC',
           ],
+          'sources/': [
+            ['exclude', '/pdf/'],
+            ['exclude', 'ext/vector_platform_device_skia\\.(cc|h)'],
+          ],
           'include_dirs': [
             '../third_party/skia/include/utils/mac',
           ],
@@ -803,6 +838,7 @@
           '../third_party/skia/include/config',
           '../third_party/skia/include/core',
           '../third_party/skia/include/effects',
+          '../third_party/skia/include/pdf',
           '../third_party/skia/include/gpu',
           '../third_party/skia/include/ports',
           '../third_party/skia/gpu/include',