SkCanvas interface for drawing a patch.

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 "SkBitmapDevice.h"
@@ skipping 2245 matching lines @@
 
     while (iter.next()) {
         iter.fDevice->drawVertices(iter, vmode, vertexCount, verts, texs,
                                    colors, xmode, indices, indexCount,
                                    looper.paint());
     }
 
     LOOPER_END
 }
 
+void SkCanvas::drawPatch(const SkPatch& patch, const SkPaint& paint) {
+    
+    // Since a patch is always within the convex hull of the control points, we discard it when its
+    // bounding rectangle is completely outside the current clip.
+    SkRect bounds;
+    bounds.set(patch.getControlPoints(), 12);
+    if (this->quickReject(bounds)) {
+        return;
+    }
+    
+    SkMatrix mat = this->getTotalMatrix();
+    SkScalar scaleX = mat.getScaleX(), scaleY = mat.getScaleY();
+    
+    LOOPER_BEGIN(paint, SkDrawFilter::kPath_Type, NULL)

[bsalomon, 2014/07/28 20:56:26]

Should we add a new SkDrawFilter::kPatch? Not really sure what this enum is used
for, though.

[dandov, 2014/07/29 18:45:46]

Mike said that for now I could just leave it as a path, but I'll ask him how to
add it when he comes back. 

+    
+    while (iter.next()) {
+        iter.fDevice->drawPatch(iter, patch, paint);
+    }
+    
+    LOOPER_END
+}
+
 //////////////////////////////////////////////////////////////////////////////
 // These methods are NOT virtual, and therefore must call back into virtual
 // methods, rather than actually drawing themselves.
 //////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::drawARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b,
                         SkXfermode::Mode mode) {
     SkPaint paint;
 
     paint.setARGB(a, r, g, b);
@@ skipping 219 matching lines @@
     if (!supported_for_raster_canvas(info)) {
         return NULL;
     }
 
     SkBitmap bitmap;
     if (!bitmap.installPixels(info, pixels, rowBytes)) {
         return NULL;
     }
     return SkNEW_ARGS(SkCanvas, (bitmap));
 }