pre-land special methods on device

src/core/SkBitmapDevice.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkConfig8888.h"
 #include "SkDraw.h"
+#include "SkImageFilter.h"
 #include "SkImageFilterCache.h"
 #include "SkMallocPixelRef.h"
 #include "SkMatrix.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkPixelRef.h"
 #include "SkPixmap.h"
+#include "SkRasterClip.h"
 #include "SkShader.h"
+#include "SkSpecialImage.h"
 #include "SkSurface.h"
 #include "SkXfermode.h"
 
 class SkColorTable;
 
 static bool valid_for_bitmap_device(const SkImageInfo& info,
                                     SkAlphaType* newAlphaType) {
     if (info.width() < 0 || info.height() < 0) {
         return false;
     }
@@ skipping 328 matching lines @@
                                   const SkPaint& paint) {
     draw.drawVertices(vmode, vertexCount, verts, textures, colors, xmode,
                       indices, indexCount, paint);
 }
 
 void SkBitmapDevice::drawDevice(const SkDraw& draw, SkBaseDevice* device,
                                 int x, int y, const SkPaint& paint) {
     draw.drawSprite(static_cast<SkBitmapDevice*>(device)->fBitmap, x, y, paint);
 }
 
+///////////////////////////////////////////////////////////////////////////////
+
+void SkBitmapDevice::drawSpecial(const SkDraw& draw, SkSpecialImage* srcImg, int x, int y,
+                                 const SkPaint& paint) {
+    SkASSERT(!srcImg->isTextureBacked());
+
+    SkBitmap resultBM;
+
+    SkImageFilter* filter = paint.getImageFilter();
+    if (filter) {
+        SkIPoint offset = SkIPoint::Make(0, 0);
+        SkMatrix matrix = *draw.fMatrix;
+        matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
+        const SkIRect clipBounds = draw.fRC->getBounds().makeOffset(-x, -y);
+        SkAutoTUnref<SkImageFilterCache> cache(this->getImageFilterCache());
+        SkImageFilter::Context ctx(matrix, clipBounds, cache.get());
+        
+        sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg, ctx, &offset));
+        if (resultImg) {
+            SkPaint tmpUnfiltered(paint);
+            tmpUnfiltered.setImageFilter(nullptr);
+            if (resultImg->getROPixels(&resultBM)) {
+                this->drawSprite(draw, resultBM, x + offset.x(), y + offset.y(), tmpUnfiltered);
+            }
+        }
+    } else {
+        if (srcImg->getROPixels(&resultBM)) {
+            this->drawSprite(draw, resultBM, x, y, paint);
+        }
+    }
+}
+
+sk_sp<SkSpecialImage> SkBitmapDevice::makeSpecial(const SkBitmap& bitmap) {
+    return SkSpecialImage::MakeFromRaster(bitmap.bounds(), bitmap);
+}
+
+sk_sp<SkSpecialImage> SkBitmapDevice::makeSpecial(const SkImage* image) {
+    return SkSpecialImage::MakeFromImage(SkIRect::MakeWH(image->width(), image->height()),
+                                         image->makeNonTextureImage());
+}
+
+sk_sp<SkSpecialImage> SkBitmapDevice::snapSpecial() {
+    return this->makeSpecial(fBitmap);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
 sk_sp<SkSurface> SkBitmapDevice::makeSurface(const SkImageInfo& info, const SkSurfaceProps& props) {
     return SkSurface::MakeRaster(info, &props);
 }
 
 SkImageFilterCache* SkBitmapDevice::getImageFilterCache() {
     SkImageFilterCache* cache = SkImageFilterCache::Get();
     cache->ref();
     return cache;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 bool SkBitmapDevice::onShouldDisableLCD(const SkPaint& paint) const {
     if (kN32_SkColorType != fBitmap.colorType() ||
         paint.getRasterizer() ||
         paint.getPathEffect() ||
         paint.isFakeBoldText() ||
         paint.getStyle() != SkPaint::kFill_Style ||
         !SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode))
     {
         return true;
     }
     return false;
 }