The Tor Browser: gfx/skia/trunk/src/utils/SkGatherPixelRefsAndRects.h@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkGatherPixelRefsAndRects.h@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkGatherPixelRefsAndRects.h

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkGatherPixelRefsAndRects_DEFINED
 #define SkGatherPixelRefsAndRects_DEFINED
 #include "SkBitmap.h"
 #include "SkDevice.h"
 #include "SkDraw.h"
 #include "SkPictureUtils.h"
 #include "SkRasterClip.h"
 #include "SkRefCnt.h"
 #include "SkRRect.h"
 #include "SkTypes.h"
 // This GatherPixelRefs device passes all discovered pixel refs and their
 // device bounds to the user provided SkPixelRefContainer-derived object
 class SkGatherPixelRefsAndRectsDevice : public SkBaseDevice {
 public:
     SK_DECLARE_INST_COUNT(SkGatherPixelRefsAndRectsDevice)
     SkGatherPixelRefsAndRectsDevice(int width, int height,
                                     SkPictureUtils::SkPixelRefContainer* prCont) {
         fSize.set(width, height);
         fPRCont = prCont;
         SkSafeRef(fPRCont);
         fEmptyBitmap.setConfig(SkImageInfo::Make(width, height,
                                                  kUnknown_SkColorType,
                                                  kIgnore_SkAlphaType));
     }
     virtual ~SkGatherPixelRefsAndRectsDevice() {
         SkSafeUnref(fPRCont);
     }
     virtual int width() const SK_OVERRIDE { return fSize.width(); }
     virtual int height() const SK_OVERRIDE { return fSize.height(); }
     virtual bool isOpaque() const SK_OVERRIDE { return false; }
     virtual SkBitmap::Config config() const SK_OVERRIDE {
         return SkBitmap::kNo_Config;
     }
     virtual SkImageInfo imageInfo() const SK_OVERRIDE {
         return fEmptyBitmap.info();
     }
 #ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG
     virtual void writePixels(const SkBitmap& bitmap, int x, int y,
                              SkCanvas::Config8888 config8888) SK_OVERRIDE {
         NotSupported();
     }
 #endif
     virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE { return NULL; }
 protected:
     virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) SK_OVERRIDE {
         return false;
     }
     virtual void clear(SkColor color) SK_OVERRIDE {
         NothingToDo();
     }
     virtual void drawPaint(const SkDraw& draw, const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bm;
         if (GetBitmapFromPaint(paint, &bm)) {
             SkRect clipRect = SkRect::Make(draw.fRC->getBounds());
             fPRCont->add(bm.pixelRef(), clipRect);
         }
     }
     virtual void drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, size_t count,
                             const SkPoint points[], const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bm;
         if (!GetBitmapFromPaint(paint, &bm)) {
             return;
         }
         if (0 == count) {
             return;
         }
         SkPoint min = points[0];
         SkPoint max = points[0];
         for (size_t i = 1; i < count; ++i) {
             const SkPoint& point = points[i];
             min.set(SkMinScalar(min.x(), point.x()), SkMinScalar(min.y(), point.y()));
             max.set(SkMaxScalar(max.x(), point.x()), SkMaxScalar(max.y(), point.y()));
         }
         SkRect bounds = SkRect::MakeLTRB(min.x(), min.y(), max.x()+1, max.y()+1);
         this->drawRect(draw, bounds, paint);
     }
     virtual void drawRect(const SkDraw& draw, const SkRect& rect,
                           const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bm;
         if (GetBitmapFromPaint(paint, &bm)) {
             SkRect mappedRect;
             draw.fMatrix->mapRect(&mappedRect, rect);
             SkRect clipRect = SkRect::Make(draw.fRC->getBounds());
             mappedRect.intersect(clipRect);
             fPRCont->add(bm.pixelRef(), mappedRect);
         }
     }
     virtual void drawOval(const SkDraw& draw, const SkRect& rect,
                           const SkPaint& paint) SK_OVERRIDE {
         this->drawRect(draw, rect, paint);
     }
     virtual void drawRRect(const SkDraw& draw, const SkRRect& rrect,
                            const SkPaint& paint) SK_OVERRIDE {
         this->drawRect(draw, rrect.rect(), paint);
     }
     virtual void drawPath(const SkDraw& draw, const SkPath& path,
                           const SkPaint& paint, const SkMatrix* prePathMatrix,
                           bool pathIsMutable) SK_OVERRIDE {
         SkBitmap bm;
         if (!GetBitmapFromPaint(paint, &bm)) {
             return;
         }
         SkRect pathBounds = path.getBounds();
         if (NULL != prePathMatrix) {
             prePathMatrix->mapRect(&pathBounds);
         }
         this->drawRect(draw, pathBounds, paint);
     }
     virtual void drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
                             const SkMatrix& matrix, const SkPaint& paint) SK_OVERRIDE {
         SkMatrix totMatrix;
         totMatrix.setConcat(*draw.fMatrix, matrix);
         SkRect bitmapRect = SkRect::MakeWH(SkIntToScalar(bitmap.width()),
                                            SkIntToScalar(bitmap.height()));
         SkRect mappedRect;
         totMatrix.mapRect(&mappedRect, bitmapRect);
         fPRCont->add(bitmap.pixelRef(), mappedRect);
         SkBitmap paintBitmap;
         if (GetBitmapFromPaint(paint, &paintBitmap)) {
             fPRCont->add(paintBitmap.pixelRef(), mappedRect);
         }
     }
     virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
                             int x, int y, const SkPaint& paint) SK_OVERRIDE {
         // Sprites aren't affected by current matrix, so we can't reuse drawRect.
         SkMatrix matrix;
         matrix.setTranslate(SkIntToScalar(x), SkIntToScalar(y));
         SkRect bitmapRect = SkRect::MakeWH(SkIntToScalar(bitmap.width()),
                                            SkIntToScalar(bitmap.height()));
         SkRect mappedRect;
         matrix.mapRect(&mappedRect, bitmapRect);
         fPRCont->add(bitmap.pixelRef(), mappedRect);
         SkBitmap paintBitmap;
         if (GetBitmapFromPaint(paint, &paintBitmap)) {
             fPRCont->add(paintBitmap.pixelRef(), mappedRect);
         }
     }
     virtual void drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
                                 const SkRect* srcOrNull, const SkRect& dst,
                                 const SkPaint& paint,
                                 SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE {
         SkRect bitmapRect = SkRect::MakeWH(SkIntToScalar(bitmap.width()),
                                            SkIntToScalar(bitmap.height()));
         SkMatrix matrix;
         matrix.setRectToRect(bitmapRect, dst, SkMatrix::kFill_ScaleToFit);
         this->drawBitmap(draw, bitmap, matrix, paint);
     }
     virtual void drawText(const SkDraw& draw, const void* text, size_t len,
                           SkScalar x, SkScalar y,
                           const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bitmap;
         if (!GetBitmapFromPaint(paint, &bitmap)) {
             return;
         }
         // Math is borrowed from SkBBoxRecord
         SkRect bounds;
         paint.measureText(text, len, &bounds);
         SkPaint::FontMetrics metrics;
         paint.getFontMetrics(&metrics);
         if (paint.isVerticalText()) {
             SkScalar h = bounds.fBottom - bounds.fTop;
             if (paint.getTextAlign() == SkPaint::kCenter_Align) {
                 bounds.fTop -= h / 2;
                 bounds.fBottom -= h / 2;
             }
             bounds.fBottom += metrics.fBottom;
             bounds.fTop += metrics.fTop;
         } else {
             SkScalar w = bounds.fRight - bounds.fLeft;
             if (paint.getTextAlign() == SkPaint::kCenter_Align) {
                 bounds.fLeft -= w / 2;
                 bounds.fRight -= w / 2;
             } else if (paint.getTextAlign() == SkPaint::kRight_Align) {
                 bounds.fLeft -= w;
                 bounds.fRight -= w;
             }
             bounds.fTop = metrics.fTop;
             bounds.fBottom = metrics.fBottom;
         }
         SkScalar pad = (metrics.fBottom - metrics.fTop) / 2;
         bounds.fLeft -= pad;
         bounds.fRight += pad;
         bounds.offset(x, y);
         this->drawRect(draw, bounds, paint);
     }
     virtual void drawPosText(const SkDraw& draw, const void* text, size_t len,
                              const SkScalar pos[], SkScalar constY,
                              int scalarsPerPos, const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bitmap;
         if (!GetBitmapFromPaint(paint, &bitmap)) {
             return;
         }
         if (0 == len) {
             return;
         }
         // Similar to SkDraw asserts.
         SkASSERT(scalarsPerPos == 1 || scalarsPerPos == 2);
         SkScalar y = scalarsPerPos == 1 ? constY : constY + pos[1];
         SkPoint min, max;
         min.set(pos[0], y);
         max.set(pos[0], y);
         for (size_t i = 1; i < len; ++i) {
             SkScalar x = pos[i * scalarsPerPos];
             SkScalar y = constY;
             if (2 == scalarsPerPos) {
                 y += pos[i * scalarsPerPos + 1];
             }
             min.set(SkMinScalar(x, min.x()), SkMinScalar(y, min.y()));
             max.set(SkMaxScalar(x, max.x()), SkMaxScalar(y, max.y()));
         }
         SkRect bounds = SkRect::MakeLTRB(min.x(), min.y(), max.x(), max.y());
         // Math is borrowed from SkBBoxRecord
         SkPaint::FontMetrics metrics;
         paint.getFontMetrics(&metrics);
         bounds.fTop += metrics.fTop;
         bounds.fBottom += metrics.fBottom;
         SkScalar pad = (metrics.fTop - metrics.fBottom) / 2;
         bounds.fLeft -= pad;
         bounds.fRight += pad;
         this->drawRect(draw, bounds, paint);
     }
     virtual void drawTextOnPath(const SkDraw& draw, const void* text, size_t len,
                                 const SkPath& path, const SkMatrix* matrix,
                                 const SkPaint& paint) SK_OVERRIDE {
         SkBitmap bitmap;
         if (!GetBitmapFromPaint(paint, &bitmap)) {
             return;
         }
         // Math is borrowed from SkBBoxRecord
         SkRect bounds = path.getBounds();
         SkPaint::FontMetrics metrics;
         paint.getFontMetrics(&metrics);
         SkScalar pad = metrics.fTop;
         // TODO: inset?!
         bounds.fLeft += pad;
         bounds.fRight -= pad;
         bounds.fTop += pad;
         bounds.fBottom -= pad;
         this->drawRect(draw, bounds, 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) SK_OVERRIDE {
         this->drawPoints(draw, SkCanvas::kPolygon_PointMode, vertexCount, verts, paint);
     }
     virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                             const SkPaint&) SK_OVERRIDE {
         NothingToDo();
     }
     // TODO: allow this call to return failure, or move to SkBitmapDevice only.
     virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE {
         return fEmptyBitmap;
     }
     virtual bool onReadPixels(const SkBitmap& bitmap,
                               int x, int y,
                               SkCanvas::Config8888 config8888) SK_OVERRIDE {
         NotSupported();
         return false;
     }
     virtual void lockPixels() SK_OVERRIDE { NothingToDo(); }
     virtual void unlockPixels() SK_OVERRIDE { NothingToDo(); }
     virtual bool allowImageFilter(const SkImageFilter*) SK_OVERRIDE { return false; }
     virtual bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE { return false; }
     virtual bool filterImage(const SkImageFilter*, const SkBitmap&, const SkImageFilter::Context&,
                              SkBitmap* result, SkIPoint* offset) SK_OVERRIDE {
         return false;
     }
 private:
     SkPictureUtils::SkPixelRefContainer* fPRCont;
     SkISize                              fSize;
     SkBitmap                             fEmptyBitmap; // legacy -- need to remove
     static bool GetBitmapFromPaint(const SkPaint &paint, SkBitmap* bitmap) {
         SkShader* shader = paint.getShader();
         if (NULL != shader) {
             if (SkShader::kNone_GradientType == shader->asAGradient(NULL)) {
                 return SkShader::kNone_BitmapType != shader->asABitmap(bitmap, NULL, NULL);
             }
         }
         return false;
     }
     virtual void replaceBitmapBackendForRasterSurface(const SkBitmap&) SK_OVERRIDE {
         NotSupported();
     }
     virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info, Usage usage) SK_OVERRIDE {
         // we expect to only get called via savelayer, in which case it is fine.
         SkASSERT(kSaveLayer_Usage == usage);
         return SkNEW_ARGS(SkGatherPixelRefsAndRectsDevice,
                           (info.width(), info.height(), fPRCont));
     }
     virtual void flush() SK_OVERRIDE {}
     static void NotSupported() {
         SkDEBUGFAIL("this method should never be called");
     }
     static void NothingToDo() {}
     typedef SkBaseDevice INHERITED;
 };
 #endif // SkGatherPixelRefsAndRects_DEFINED

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gfx/skia/trunk/src/utils/SkGatherPixelRefsAndRects.h@129ffea94266 (annotated)

gfx/skia/trunk/src/utils/SkGatherPixelRefsAndRects.h