test dont-clip-layer

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkCanvasPriv.h"
@@ skipping 296 matching lines @@
     void reset(const SkIRect& bounds) {
         SkASSERT(fLayer);
         SkASSERT(fDeferredSaveCount == 0);
 
         fMatrix.reset();
         fRasterClip.setRect(bounds);
         fLayer->reset(bounds);
     }
 };
 
+static SkIRect compute_device_bounds(SkBaseDevice* device) {
+    return SkIRect::MakeXYWH(device->getOrigin().x(), device->getOrigin().y(),
+                             device->width(), device->height());
+}
+
 class SkDrawIter : public SkDraw {
 public:
     SkDrawIter(SkCanvas* canvas) {
         canvas = canvas->canvasForDrawIter();
         canvas->updateDeviceCMCache();
 
         fClipStack = canvas->fClipStack;
         fCurrLayer = canvas->fMCRec->fTopLayer;
+
+        fMultiDeviceCS = nullptr;
+        if (fCurrLayer->fNext) {
+            fMultiDeviceCS = canvas->fClipStack;
+            fMultiDeviceCS->save();
+        }
+    }
+
+    ~SkDrawIter() {
+        if (fMultiDeviceCS) {
+            fMultiDeviceCS->restore();
+        }
     }
 
     bool next() {
+        if (fMultiDeviceCS && fDevice) {
+            // remove the previous device's bounds
+            fMultiDeviceCS->clipDevRect(compute_device_bounds(fDevice),
+                                        SkRegion::kDifference_Op);
+        }
+
         // skip over recs with empty clips
         while (fCurrLayer && fCurrLayer->fClip.isEmpty()) {
             fCurrLayer = fCurrLayer->fNext;
         }
 
         const DeviceCM* rec = fCurrLayer;
         if (rec && rec->fDevice) {
 
             fMatrix = rec->fMatrix;
             fRC     = &rec->fClip;
@@ skipping 15 matching lines @@
     SkBaseDevice* getDevice() const { return fDevice; }
     const SkRasterClip& getClip() const { return *fRC; }
     int getX() const { return fDevice->getOrigin().x(); }
     int getY() const { return fDevice->getOrigin().y(); }
     const SkMatrix& getMatrix() const { return *fMatrix; }
     const SkPaint* getPaint() const { return fPaint; }
 
 private:
     const DeviceCM* fCurrLayer;
     const SkPaint*  fPaint;     // May be null.
+    SkClipStack*    fMultiDeviceCS;
 
     typedef SkDraw INHERITED;
 };
 
 /////////////////////////////////////////////////////////////////////////////
 
 static SkPaint* set_if_needed(SkLazyPaint* lazy, const SkPaint& orig) {
     return lazy->isValid() ? lazy->get() : lazy->set(orig);
 }
 
@@ skipping 667 matching lines @@
 
 void SkCanvas::internalSave() {
     MCRec* newTop = (MCRec*)fMCStack.push_back();
     new (newTop) MCRec(*fMCRec);    // balanced in restore()
     fMCRec = newTop;
 
     fClipStack->save();
 }
 
 bool SkCanvas::BoundsAffectsClip(SaveLayerFlags saveLayerFlags) {
-#ifdef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
     return !(saveLayerFlags & SkCanvas::kDontClipToLayer_PrivateSaveLayerFlag);
-#else
-    return true;
-#endif
 }
 
 bool SkCanvas::clipRectBounds(const SkRect* bounds, SaveLayerFlags saveLayerFlags,
                               SkIRect* intersection, const SkImageFilter* imageFilter) {
     SkIRect clipBounds;
     if (!this->getClipDeviceBounds(&clipBounds)) {
         return false;
     }
 
     const SkMatrix& ctm = fMCRec->fMatrix;  // this->getTotalMatrix()
@@ skipping 96 matching lines @@
         // keep the same characteristics as the prev
         return SkImageInfo::Make(w, h, prev.colorType(), alphaType, sk_ref_sp(prev.colorSpace()));
     }
 }
 
 void SkCanvas::internalSaveLayer(const SaveLayerRec& rec, SaveLayerStrategy strategy) {
     const SkRect* bounds = rec.fBounds;
     const SkPaint* paint = rec.fPaint;
     SaveLayerFlags saveLayerFlags = rec.fSaveLayerFlags;
 
-#ifndef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
-    saveLayerFlags &= ~kDontClipToLayer_PrivateSaveLayerFlag;
-#endif
-
     SkLazyPaint lazyP;
     SkImageFilter* imageFilter = paint ? paint->getImageFilter() : NULL;
     SkMatrix stashedMatrix = fMCRec->fMatrix;
     SkMatrix remainder;
     SkSize scale;
     /*
      *  ImageFilters (so far) do not correctly handle matrices (CTM) that contain rotation/skew/etc.
      *  but they do handle scaling. To accommodate this, we do the following:
      *
      *  1. Stash off the current CTM
@@ skipping 2259 matching lines @@
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }
 
 #ifdef SK_SUPPORT_LEGACY_NEW_SURFACE_API
 SkSurface* SkCanvas::newSurface(const SkImageInfo& info, const SkSurfaceProps* props) {
     return this->makeSurface(info, props).release();
 }
 #endif