skia/ext/opacity_draw_filter.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "skia/ext/opacity_draw_filter.h"
   6 #include "third_party/skia/include/core/SkPaint.h"
   7
   8 namespace skia {
   9
  10 OpacityDrawFilter::OpacityDrawFilter(float opacity,
  11                                      bool disable_image_filtering)
  12     : alpha_(SkScalarRoundToInt(opacity * 255)),
  13       disable_image_filtering_(disable_image_filtering) {}
  14
  15 OpacityDrawFilter::~OpacityDrawFilter() {}
  16
  17 bool OpacityDrawFilter::filter(SkPaint* paint, Type type) {
  18   if (alpha_ < 255)
  19     paint->setAlpha(alpha_);
  20   if (disable_image_filtering_)
  21     paint->setFilterLevel(SkPaint::kNone_FilterLevel);
  22   return true;
  23 }
  24
  25 }  // namespace skia
  26
  27