1 // Copyright (c) 2012 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.
5 #include "ui/views/background.h"
7 #include "base/logging.h"
8 #include "skia/ext/skia_utils_win.h"
9 #include "third_party/skia/include/core/SkPaint.h"
10 #include "ui/gfx/canvas.h"
11 #include "ui/gfx/color_utils.h"
12 #include "ui/views/painter.h"
13 #include "ui/views/view.h"
17 // SolidBackground is a trivial Background implementation that fills the
18 // background in a solid color.
19 class SolidBackground : public Background {
21 explicit SolidBackground(SkColor color) {
22 SetNativeControlColor(color);
25 virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
26 // Fill the background. Note that we don't constrain to the bounds as
27 // canvas is already clipped for us.
28 canvas->DrawColor(get_color());
32 DISALLOW_COPY_AND_ASSIGN(SolidBackground);
35 class BackgroundPainter : public Background {
37 BackgroundPainter(bool owns_painter, Painter* painter)
38 : owns_painter_(owns_painter), painter_(painter) {
42 virtual ~BackgroundPainter() {
48 virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
49 Painter::PaintPainterAt(canvas, painter_, view->GetLocalBounds());
56 DISALLOW_COPY_AND_ASSIGN(BackgroundPainter);
59 Background::Background()
60 : color_(SK_ColorWHITE)
62 , native_control_brush_(NULL)
67 Background::~Background() {
69 DeleteObject(native_control_brush_);
73 void Background::SetNativeControlColor(SkColor color) {
76 DeleteObject(native_control_brush_);
77 native_control_brush_ = NULL;
82 HBRUSH Background::GetNativeControlBrush() const {
83 if (!native_control_brush_)
84 native_control_brush_ = CreateSolidBrush(skia::SkColorToCOLORREF(color_));
85 return native_control_brush_;
90 Background* Background::CreateSolidBackground(SkColor color) {
91 return new SolidBackground(color);
95 Background* Background::CreateStandardPanelBackground() {
96 // TODO(beng): Should be in NativeTheme.
98 return CreateSolidBackground(SK_ColorWHITE);
100 return CreateVerticalGradientBackground(SkColorSetRGB(246, 250, 255),
101 SkColorSetRGB(219, 235, 255));
106 Background* Background::CreateVerticalGradientBackground(SkColor color1,
108 Background* background = CreateBackgroundPainter(
109 true, Painter::CreateVerticalGradient(color1, color2));
110 background->SetNativeControlColor(
111 color_utils::AlphaBlend(color1, color2, 128));
117 Background* Background::CreateVerticalMultiColorGradientBackground(
121 Background* background = CreateBackgroundPainter(
122 true, Painter::CreateVerticalMultiColorGradient(colors, pos, count));
123 background->SetNativeControlColor(
124 color_utils::AlphaBlend(colors[0], colors[count-1], 128));
130 Background* Background::CreateBackgroundPainter(bool owns_painter,
132 return new BackgroundPainter(owns_painter, painter);