blob: 9085653fb2f0371488d47eb720875f5890a5b939 (
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
|
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef ScrollbarUtil_h
#define ScrollbarUtil_h
#include "nsLayoutUtils.h"
#include "nsNativeTheme.h"
class ScrollbarUtil {
public:
static bool IsScrollbarWidthThin(ComputedStyle* aStyle);
static bool IsScrollbarWidthThin(nsIFrame* aFrame);
// Returns the style for custom scrollbar if the scrollbar part frame should
// use the custom drawing path, nullptr otherwise.
//
// Optionally the caller can pass a pointer to aDarkScrollbar for whether
// custom scrollbar may be drawn due to dark background.
static ComputedStyle* GetCustomScrollbarStyle(nsIFrame* aFrame,
bool* aDarkScrollbar = nullptr);
static nscolor GetScrollbarButtonColor(nscolor aTrackColor,
EventStates aStates);
static nscolor GetScrollbarArrowColor(nscolor aButtonColor);
static nscolor AdjustScrollbarFaceColor(nscolor aFaceColor,
EventStates aStates);
static nscolor GetScrollbarTrackColor(nsIFrame* aFrame);
static nscolor GetScrollbarThumbColor(nsIFrame* aFrame,
EventStates aEventStates);
static Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
nsIFrame* aFrame, StyleAppearance aAppearance);
protected:
ScrollbarUtil() = default;
virtual ~ScrollbarUtil() = default;
};
#endif
|
