SkCanvas::adjustToTopLayer()

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 2018 matching lines @@
 void SkCanvas::legacy_drawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst,
                                      const SkPaint* paint, SrcRectConstraint constraint) {
     if (src) {
         this->drawBitmapRect(bitmap, *src, dst, paint, constraint);
     } else {
         this->drawBitmapRect(bitmap, SkRect::MakeIWH(bitmap.width(), bitmap.height()),
                              dst, paint, constraint);
     }
 }
 
+void SkCanvas::adjustToTopLayer(SkMatrix* matrix, SkIRect* clip_bounds) {
+    SkIRect layer_bounds = this->getTopLayerBounds();
+    if (clip_bounds) {
+        clip_bounds->offset(-layer_bounds.left(), -layer_bounds.top());
+    }
+    if (matrix) {
+        matrix->preTranslate(-layer_bounds.left(), -layer_bounds.top());
+    }
+}
+
 //////////////////////////////////////////////////////////////////////////////
 //  These are the virtual drawing methods
 //////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::onDiscard() {
     if (fSurfaceBase) {
         fSurfaceBase->aboutToDraw(SkSurface::kDiscard_ContentChangeMode);
     }
 }
 
@@ skipping 1013 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