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ui/views/background.h

Index: ui/views/background.h
diff --git a/ui/views/background.h b/ui/views/background.h
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-// 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.
-
-#ifndef UI_VIEWS_BACKGROUND_H_
-#define UI_VIEWS_BACKGROUND_H_
-
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#endif  // defined(OS_WIN)
-
-#include "base/basictypes.h"
-#include "third_party/skia/include/core/SkColor.h"
-#include "ui/views/views_export.h"
-
-namespace gfx {
-class Canvas;
-}
-
-namespace views {
-
-class Painter;
-class View;
-
-/////////////////////////////////////////////////////////////////////////////
-//
-// Background class
-//
-// A background implements a way for views to paint a background. The
-// background can be either solid or based on a gradient. Of course,
-// Background can be subclassed to implement various effects.
-//
-// Any View can have a background. See View::SetBackground() and
-// View::OnPaintBackground()
-//
-/////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT Background {
- public:
-  Background();
-  virtual ~Background();
-
-  // Creates a background that fills the canvas in the specified color.
-  static Background* CreateSolidBackground(SkColor color);
-
-  // Creates a background that fills the canvas in the specified color.
-  static Background* CreateSolidBackground(int r, int g, int b) {
-    return CreateSolidBackground(SkColorSetRGB(r, g, b));
-  }
-
-  // Creates a background that fills the canvas in the specified color.
-  static Background* CreateSolidBackground(int r, int g, int b, int a) {
-    return CreateSolidBackground(SkColorSetARGB(a, r, g, b));
-  }
-
-  // Creates a background that contains a vertical gradient that varies
-  // from |color1| to |color2|
-  static Background* CreateVerticalGradientBackground(SkColor color1,
-                                                      SkColor color2);
-
-  // Creates a background that contains a vertical gradient. The gradient can
-  // have multiple |colors|. The |pos| array contains the relative positions of
-  // each corresponding color. |colors| and |pos| must be the same size. The
-  // first element in |pos| must be 0.0 and the last element must be 1.0.
-  // |count| contains the number of elements in |colors| and |pos|.
-  static Background* CreateVerticalMultiColorGradientBackground(SkColor* colors,
-                                                                SkScalar* pos,
-                                                                size_t count);
-
-  // Creates Chrome's standard panel background
-  static Background* CreateStandardPanelBackground();
-
-  // Creates a Background from the specified Painter. If owns_painter is
-  // true, the Painter is deleted when the Border is deleted.
-  static Background* CreateBackgroundPainter(bool owns_painter,
-                                             Painter* painter);
-
-  // Render the background for the provided view
-  virtual void Paint(gfx::Canvas* canvas, View* view) const = 0;
-
-  // Set a solid, opaque color to be used when drawing backgrounds of native
-  // controls.  Unfortunately alpha=0 is not an option.
-  void SetNativeControlColor(SkColor color);
-
-  // Returns the "background color".  This is equivalent to the color set in
-  // SetNativeControlColor().  For solid backgrounds, this is the color; for
-  // gradient backgrounds, it's the midpoint of the gradient; for painter
-  // backgrounds, this is not useful (returns a default color).
-  SkColor get_color() const { return color_; }
-
-#if defined(OS_WIN)
-  // TODO(port): Make GetNativeControlBrush portable (currently uses HBRUSH).
-
-  // Get the brush that was specified by SetNativeControlColor
-  HBRUSH GetNativeControlBrush() const;
-#endif  // defined(OS_WIN)
-
- private:
-  SkColor color_;
-#if defined(OS_WIN)
-  // TODO(port): Create portable replacement for HBRUSH.
-  mutable HBRUSH native_control_brush_;
-#endif  // defined(OS_WIN)
-
-  DISALLOW_COPY_AND_ASSIGN(Background);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_BACKGROUND_H_