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.
97 return CreateSolidBackground(SK_ColorWHITE
);
101 Background
* Background::CreateVerticalGradientBackground(SkColor color1
,
103 Background
* background
= CreateBackgroundPainter(
104 true, Painter::CreateVerticalGradient(color1
, color2
));
105 background
->SetNativeControlColor(
106 color_utils::AlphaBlend(color1
, color2
, 128));
112 Background
* Background::CreateVerticalMultiColorGradientBackground(
116 Background
* background
= CreateBackgroundPainter(
117 true, Painter::CreateVerticalMultiColorGradient(colors
, pos
, count
));
118 background
->SetNativeControlColor(
119 color_utils::AlphaBlend(colors
[0], colors
[count
-1], 128));
125 Background
* Background::CreateBackgroundPainter(bool owns_painter
,
127 return new BackgroundPainter(owns_painter
, painter
);