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// Copyright (c) 2009 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 CHROME_BROWSER_UI_NTP_BACKGROUND_UTIL_H_
#define CHROME_BROWSER_UI_NTP_BACKGROUND_UTIL_H_
namespace gfx {
class Canvas;
class Rect;
class Size;
}
namespace ui {
class ThemeProvider;
}
class Profile;
class NtpBackgroundUtil {
public:
// Paints the NTP background on |canvas| where the theme image fills up
// |tab_contents_height|.
// - |area| is the area of the canvas that gets painted and also serves as the
// origin of the image (for top-aligned images).
// - |tab_contents_height| is necessary for correctly painting bottom-aligned
// images since then the origin is the bottom of the web page.
static void PaintBackgroundDetachedMode(Profile* profile,
gfx::Canvas* canvas,
const gfx::Rect& area,
int tab_contents_height);
// Paints the NTP background on |canvas| where the theme image fills up
// the entire browser client area from top of tab to bottom of browser client
// area.
// - |area_in_canvas| is the area of and relative to the canvas that gets
// painted.
// - |browser_client_area_size| is the size of browser client area where the
// entire image will be displayed
// - |area_in_browser_client_area| is |area_in_canvas| relative to browser
// client area of |browser_client_area_size|.
static void PaintBackgroundForBrowserClientArea(
Profile* profile,
gfx::Canvas* canvas,
const gfx::Rect& area_in_canvas,
const gfx::Size& browser_client_area_size,
const gfx::Rect& area_in_browser_client);
// Returns the x or y coordinate in |view_dimension| where a center-aligned
// image of |image_dimension| should be placed:
// - if dimension is width, x-pos is returned.
// - if dimension is height, y-pos is returned.
static int GetPlacementOfCenterAlignedImage(int view_dimension,
int image_dimension);
private:
NtpBackgroundUtil() {}
};
#endif // CHROME_BROWSER_UI_NTP_BACKGROUND_UTIL_H_
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