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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/app_list/views/cached_label.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
namespace app_list {
CachedLabel::CachedLabel()
: needs_repaint_(true) {
}
void CachedLabel::PaintToBackingImage() {
if (image_.size() == size() && !needs_repaint_)
return;
bool is_opaque = SkColorGetA(background_color()) == 0xFF;
gfx::Canvas canvas(size(), 1.0f, is_opaque);
// If a background is provided, it will initialize the canvas in
// View::OnPaintBackground(). Otherwise, the background must be set here.
if (!background()) {
canvas.FillRect(
GetLocalBounds(), background_color(), SkXfermode::kSrc_Mode);
}
Label::OnPaint(&canvas);
image_ = gfx::ImageSkia(canvas.ExtractImageRep());
needs_repaint_ = false;
}
#if defined(OS_WIN)
void CachedLabel::OnPaint(gfx::Canvas* canvas) {
PaintToBackingImage();
canvas->DrawImageInt(image_, 0, 0);
}
#endif
} // namespace app_list
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