blob: 241f31c355658925836576eb682e30eb1b395bc3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// 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_NATIVE_THEME_DELEGATE_H_
#define UI_VIEWS_NATIVE_THEME_DELEGATE_H_
#include "ui/gfx/geometry/rect.h"
#include "ui/native_theme/native_theme.h"
#include "ui/views/views_export.h"
namespace views {
// A delagate that supports animating transtions between different native
// theme states. This delegate can be used to control a native theme Border
// or Painter object.
//
// If animation is ongoing, the native theme border or painter will
// composite the foreground state over the backgroud state using an alpha
// between 0 and 255 based on the current value of the animation.
class VIEWS_EXPORT NativeThemeDelegate {
public:
virtual ~NativeThemeDelegate() {}
// Get the native theme part that should be drawn.
virtual ui::NativeTheme::Part GetThemePart() const = 0;
// Get the rectangle that should be painted.
virtual gfx::Rect GetThemePaintRect() const = 0;
// Get the state of the part, along with any extra data needed for drawing.
virtual ui::NativeTheme::State GetThemeState(
ui::NativeTheme::ExtraParams* params) const = 0;
// If the native theme drawign should be animated, return the Animation object
// that controlls it. If no animation is ongoing, NULL may be returned.
virtual const gfx::Animation* GetThemeAnimation() const = 0;
// If animation is onging, this returns the background native theme state.
virtual ui::NativeTheme::State GetBackgroundThemeState(
ui::NativeTheme::ExtraParams* params) const = 0;
// If animation is onging, this returns the foreground native theme state.
// This state will be composited over the background using an alpha value
// based on the current value of the animation.
virtual ui::NativeTheme::State GetForegroundThemeState(
ui::NativeTheme::ExtraParams* params) const = 0;
};
} // namespace views
#endif // UI_VIEWS_NATIVE_THEME_DELEGATE_H_
|
