add src-rect-constraint to drawImageRect

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 "SkCanvas.h"
 #include "SkCanvasPriv.h"
 #include "SkBitmapDevice.h"
@@ skipping 1747 matching lines @@
 
 void SkCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
     this->onDrawPath(path, paint);
 }
 
 void SkCanvas::drawImage(const SkImage* image, SkScalar x, SkScalar y, const SkPaint* paint) {
     this->onDrawImage(image, x, y, paint);
 }
 
 void SkCanvas::drawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
-                             const SkPaint* paint) {
+                             const SkPaint* paint, SrcRectConstraint constraint) {
     if (dst.isEmpty()) {
         return;
     }
-    this->onDrawImageRect(image, src, dst, paint);
+    this->onDrawImageRect(image, src, dst, paint SRC_RECT_CONSTRAINT_ARG(constraint));
 }
 
 void SkCanvas::drawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst,
                              const SkPaint* paint) {
     if (dst.isEmpty()) {
         return;
     }
     if (!SkNinePatchIter::Valid(image->width(), image->height(), center)) {
         this->drawImageRect(image, NULL, dst, paint);
     }
     this->onDrawImageNine(image, center, dst, paint);
 }
 
 void SkCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar dx, SkScalar dy, const SkPaint* paint) {
     if (bitmap.drawsNothing()) {
         return;
     }
     this->onDrawBitmap(bitmap, dx, dy, paint);
 }
 
 void SkCanvas::drawBitmapRectToRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst,
                                     const SkPaint* paint, DrawBitmapRectFlags flags) {
     if (bitmap.drawsNothing() || dst.isEmpty()) {
         return;
     }
     this->onDrawBitmapRect(bitmap, src, dst, paint, flags);
 }
 
+void SkCanvas::drawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst,
+                              const SkPaint* paint, SrcRectConstraint constraint) {
+    // TODO: update virtual signature so we can past constraint directly
+    if (bitmap.drawsNothing() || dst.isEmpty()) {
+        return;
+    }
+    this->onDrawBitmapRect(bitmap, src, dst, paint,
+                           kStrict_SrcRectConstraint == constraint ?
+                           kNone_DrawBitmapRectFlag : kBleed_DrawBitmapRectFlag);
+}
+
 void SkCanvas::drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, const SkRect& dst,
                               const SkPaint* paint) {
     if (bitmap.drawsNothing() || dst.isEmpty()) {
         return;
     }
     if (!SkNinePatchIter::Valid(bitmap.width(), bitmap.height(), center)) {
         this->drawBitmapRectToRect(bitmap, NULL, dst, paint);
     }
     this->onDrawBitmapNine(bitmap, center, dst, paint);
 }
@@ skipping 224 matching lines @@
     LOOPER_BEGIN(*paint, SkDrawFilter::kBitmap_Type, &bounds)
     
     while (iter.next()) {
         iter.fDevice->drawImage(iter, image, x, y, looper.paint());
     }
     
     LOOPER_END
 }
 
 void SkCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
-                               const SkPaint* paint) {
+                               const SkPaint* paint SRC_RECT_CONSTRAINT_PARAM(constraint)) {
     TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawImageRect()");
+    SRC_RECT_CONSTRAINT_LOCAL_DEFAULT(constraint)
     SkRect storage;
     const SkRect* bounds = &dst;
     if (NULL == paint || paint->canComputeFastBounds()) {
         if (paint) {
             bounds = &paint->computeFastBounds(dst, &storage);
         }
         if (this->quickReject(*bounds)) {
             return;
         }
     }
     SkLazyPaint lazy;
     if (NULL == paint) {
         paint = lazy.init();
     }
     
     LOOPER_BEGIN(*paint, SkDrawFilter::kBitmap_Type, bounds)
     
     while (iter.next()) {
-        iter.fDevice->drawImageRect(iter, image, src, dst, looper.paint());
+        iter.fDevice->drawImageRect(iter, image, src, dst, looper.paint(), constraint);
     }
     
     LOOPER_END
 }
 
 void SkCanvas::onDrawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y, const SkPaint* paint) {
     TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawBitmap()");
     SkDEBUGCODE(bitmap.validate();)
 
     if (NULL == paint || paint->canComputeFastBounds()) {
@@ skipping 11 matching lines @@
     }
 
     SkMatrix matrix;
     matrix.setTranslate(x, y);
     this->internalDrawBitmap(bitmap, matrix, paint);
 }
 
 // this one is non-virtual, so it can be called safely by other canvas apis
 void SkCanvas::internalDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src,
                                       const SkRect& dst, const SkPaint* paint,
-                                      DrawBitmapRectFlags flags) {
+                                      SrcRectConstraint constraint) {
     if (bitmap.drawsNothing() || dst.isEmpty()) {
         return;
     }
 
     SkRect storage;
     const SkRect* bounds = &dst;
     if (NULL == paint || paint->canComputeFastBounds()) {
         if (paint) {
             bounds = &paint->computeFastBounds(dst, &storage);
         }
         if (this->quickReject(*bounds)) {
             return;
         }
     }
 
     SkLazyPaint lazy;
     if (NULL == paint) {
         paint = lazy.init();
     }
 
     LOOPER_BEGIN(*paint, SkDrawFilter::kBitmap_Type, bounds)
 
     while (iter.next()) {
-        iter.fDevice->drawBitmapRect(iter, bitmap, src, dst, looper.paint(), flags);
+        iter.fDevice->drawBitmapRect(iter, bitmap, src, dst, looper.paint(), constraint);
     }
 
     LOOPER_END
 }
 
 void SkCanvas::onDrawBitmapRect(const SkBitmap& bitmap, const SkRect* src, const SkRect& dst,
                                 const SkPaint* paint, DrawBitmapRectFlags flags) {
     TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawBitmapRectToRect()");
     SkDEBUGCODE(bitmap.validate();)
-    this->internalDrawBitmapRect(bitmap, src, dst, paint, flags);
+    this->internalDrawBitmapRect(bitmap, src, dst, paint,
+                                 kNone_DrawBitmapRectFlag == flags ?
+                                 kStrict_SrcRectConstraint : kFast_SrcRectConstraint);
 }
 
 void SkCanvas::onDrawImageNine(const SkImage* image, const SkIRect& center, const SkRect& dst,
                                const SkPaint* paint) {
     TRACE_EVENT0("disabled-by-default-skia", "SkCanvas::drawImageNine()");
     
     SkRect storage;
     const SkRect* bounds = &dst;
     if (NULL == paint || paint->canComputeFastBounds()) {
         if (paint) {
@@ skipping 617 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }