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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_WINDOW_FRAME_BACKGROUND_H_
#define UI_VIEWS_WINDOW_FRAME_BACKGROUND_H_
#include "base/basictypes.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/views/views_export.h"
namespace gfx {
class Canvas;
class ImageSkia;
}
namespace views {
class View;
// FrameBackground handles painting for all the various window frames we
// support in Chrome. It intends to consolidate paint code that historically
// was copied. One frame to rule them all!
class VIEWS_EXPORT FrameBackground {
public:
FrameBackground();
~FrameBackground();
// Sets the color to draw under the frame images.
void set_frame_color(SkColor color) { frame_color_ = color; }
// Sets the theme image for the top of the window. May be NULL.
// Memory is owned by the caller.
void set_theme_image(const gfx::ImageSkia* image) { theme_image_ = image; }
// Sets an image that overlays the top window image. Usually used to add
// edge highlighting to provide the illusion of depth. May be NULL.
// Memory is owned by the caller.
void set_theme_overlay_image(gfx::ImageSkia* image) {
theme_overlay_image_ = image;
}
// Sets the height of the top area to fill with the default frame color,
// which must extend behind the tab strip.
void set_top_area_height(int height) { top_area_height_ = height; }
// Only used if we have an overlay image for the theme.
void set_theme_background_y(int y) { theme_background_y_ = y; }
// Vertical offset for theme image when drawing maximized.
void set_maximized_top_offset(int offset) { maximized_top_offset_ = offset; }
// Sets images used when drawing the sides of the frame.
// Caller owns the memory.
void SetSideImages(const gfx::ImageSkia* left,
const gfx::ImageSkia* top,
const gfx::ImageSkia* right,
const gfx::ImageSkia* bottom);
// Sets images used when drawing the corners of the frame.
// Caller owns the memory.
void SetCornerImages(const gfx::ImageSkia* top_left,
const gfx::ImageSkia* top_right,
const gfx::ImageSkia* bottom_left,
const gfx::ImageSkia* bottom_right);
// Paints the border for a standard, non-maximized window. Also paints the
// background of the title bar area, since the top frame border and the
// title bar background are a contiguous component.
void PaintRestored(gfx::Canvas* canvas, View* view) const;
// Paints the border for a maximized window, which does not include the
// window edges.
void PaintMaximized(gfx::Canvas* canvas, View* view) const;
private:
// Fills the frame area with the frame color.
void PaintFrameColor(gfx::Canvas* canvas, View* view) const;
SkColor frame_color_;
const gfx::ImageSkia* theme_image_;
gfx::ImageSkia* theme_overlay_image_;
int top_area_height_;
// Images for the sides of the frame.
const gfx::ImageSkia* left_edge_;
const gfx::ImageSkia* top_edge_;
const gfx::ImageSkia* right_edge_;
const gfx::ImageSkia* bottom_edge_;
// Images for the corners of the frame.
const gfx::ImageSkia* top_left_corner_;
const gfx::ImageSkia* top_right_corner_;
const gfx::ImageSkia* bottom_left_corner_;
const gfx::ImageSkia* bottom_right_corner_;
// Attributes for maximized window painting.
// TODO(jamescook): Remove all these.
gfx::ImageSkia* maximized_top_left_;
gfx::ImageSkia* maximized_top_right_;
int maximized_top_offset_;
int theme_background_y_;
DISALLOW_COPY_AND_ASSIGN(FrameBackground);
};
} // namespace views
#endif // UI_VIEWS_WINDOW_FRAME_BACKGROUND_H_
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