| // Copyright (c) 2012 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/views/background.h" |
| |
| #include "base/logging.h" |
| #include "skia/ext/skia_utils_win.h" |
| #include "third_party/skia/include/core/SkPaint.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/color_utils.h" |
| #include "ui/views/painter.h" |
| #include "ui/views/view.h" |
| |
| namespace views { |
| |
| // SolidBackground is a trivial Background implementation that fills the |
| // background in a solid color. |
| class SolidBackground : public Background { |
| public: |
| explicit SolidBackground(SkColor color) { |
| SetNativeControlColor(color); |
| } |
| |
| void Paint(gfx::Canvas* canvas, View* view) const { |
| // Fill the background. Note that we don't constrain to the bounds as |
| // canvas is already clipped for us. |
| canvas->DrawColor(get_color()); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(SolidBackground); |
| }; |
| |
| class BackgroundPainter : public Background { |
| public: |
| BackgroundPainter(bool owns_painter, Painter* painter) |
| : owns_painter_(owns_painter), painter_(painter) { |
| DCHECK(painter); |
| } |
| |
| virtual ~BackgroundPainter() { |
| if (owns_painter_) |
| delete painter_; |
| } |
| |
| |
| void Paint(gfx::Canvas* canvas, View* view) const { |
| Painter::PaintPainterAt(canvas, painter_, view->GetLocalBounds()); |
| } |
| |
| private: |
| bool owns_painter_; |
| Painter* painter_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BackgroundPainter); |
| }; |
| |
| Background::Background() |
| : color_(SK_ColorWHITE) |
| #if defined(OS_WIN) |
| , native_control_brush_(NULL) |
| #endif |
| { |
| } |
| |
| Background::~Background() { |
| #if defined(OS_WIN) |
| DeleteObject(native_control_brush_); |
| #endif |
| } |
| |
| void Background::SetNativeControlColor(SkColor color) { |
| color_ = color; |
| #if defined(OS_WIN) |
| DeleteObject(native_control_brush_); |
| native_control_brush_ = NULL; |
| #endif |
| } |
| |
| #if defined(OS_WIN) |
| HBRUSH Background::GetNativeControlBrush() const { |
| if (!native_control_brush_) |
| native_control_brush_ = CreateSolidBrush(skia::SkColorToCOLORREF(color_)); |
| return native_control_brush_; |
| } |
| #endif |
| |
| //static |
| Background* Background::CreateSolidBackground(SkColor color) { |
| return new SolidBackground(color); |
| } |
| |
| //static |
| Background* Background::CreateStandardPanelBackground() { |
| // TODO(beng): Should be in NativeTheme. |
| #if defined(USE_AURA) |
| return CreateSolidBackground(SK_ColorWHITE); |
| #else |
| return CreateVerticalGradientBackground(SkColorSetRGB(246, 250, 255), |
| SkColorSetRGB(219, 235, 255)); |
| #endif |
| } |
| |
| //static |
| Background* Background::CreateVerticalGradientBackground(SkColor color1, |
| SkColor color2) { |
| Background* background = CreateBackgroundPainter( |
| true, Painter::CreateVerticalGradient(color1, color2)); |
| background->SetNativeControlColor( |
| color_utils::AlphaBlend(color1, color2, 128)); |
| |
| return background; |
| } |
| |
| //static |
| Background* Background::CreateVerticalMultiColorGradientBackground( |
| SkColor* colors, |
| SkScalar* pos, |
| size_t count) { |
| Background* background = CreateBackgroundPainter( |
| true, Painter::CreateVerticalMultiColorGradient(colors, pos, count)); |
| background->SetNativeControlColor( |
| color_utils::AlphaBlend(colors[0], colors[count-1], 128)); |
| |
| return background; |
| } |
| |
| //static |
| Background* Background::CreateBackgroundPainter(bool owns_painter, |
| Painter* painter) { |
| return new BackgroundPainter(owns_painter, painter); |
| } |
| |
| } // namespace views |