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 "ui/app_list/views/cached_label.h" 6 7 #include "base/strings/utf_string_conversions.h" 8 #include "ui/base/resource/resource_bundle.h" 9 #include "ui/gfx/canvas.h" 10 11 namespace app_list { 12 13 CachedLabel::CachedLabel() 14 : needs_repaint_(true) { 15 } 16 17 void CachedLabel::PaintToBackingImage() { 18 if (image_.size() == size() && !needs_repaint_) 19 return; 20 gfx::Canvas canvas(size(), ui::SCALE_FACTOR_100P, false /* is_opaque */); 21 canvas.FillRect(GetLocalBounds(), SkColorSetARGB(0, 0, 0, 0), 22 SkXfermode::kSrc_Mode); 23 Label::OnPaint(&canvas); 24 image_ = gfx::ImageSkia(canvas.ExtractImageRep()); 25 needs_repaint_ = false; 26 } 27 28 #if defined(OS_WIN) 29 void CachedLabel::OnPaint(gfx::Canvas* canvas) { 30 PaintToBackingImage(); 31 canvas->DrawImageInt(image_, 0, 0); 32 } 33 #endif 34 35 } // namespace app_list 36
