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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*
This file is part of KDDockWidgets.
SPDX-FileCopyrightText: 2019 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Sérgio Martins <sergio.martins@kdab.com>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#ifndef EXAMPLETITLEBAR_CSS_H
#define EXAMPLETITLEBAR_CSS_H
#pragma once
#include <kddockwidgets/qtwidgets/views/TitleBar.h>
#include <kddockwidgets/core/TitleBar.h>
/**
* @brief Shows how to implement a custom titlebar which uses "Qt StyleSheets".
*
* Derive from KDDockWidgets::QtWidgets::ViewFactory and override the createTitleBar() method.
*
* To try it out, modify examples/dockwidgets/MyViewFactory.cpp to return a MyTitleBar_CSS instance.
* Run the example with: ./bin/qtwidgets_dockwidgets -p
*
* WARNINGS:
* - Qt StyleSheets are not recommended for new applications. Often you are able to style 90% of
* the application but then hit a road block. QStyle is much more powerful and flexible.
* - The Qt maintainers have manifested intention to deprecated stylesheets.
* - Stylesheets are supported for built-in QWidgets (QPushButton, QComboBox, etc.), any widget
* that's not in Qt needs to be crafted by the user, that includes, for example, having to paint
* your background manually. KDDockWidget::QtWidgets::TitleBar does this for your
* convenience though.
* - Qt stylesheets don't react to property changes (known old bug in Qt), for example:
* QLineEdit[readOnly="true"] { color: gray }
* this won't trigger when readOnly changes to false, you need to set/unset. This is QTBUG-51236
* - KDDockWidget::QtWidgets::TitleBar::isFocused is a property, there for needs to
* workaround the above bug by unsetting the sheet and setting it again.
*/
class MyTitleBar_CSS : public KDDockWidgets::QtWidgets::TitleBar
{
public:
explicit MyTitleBar_CSS(KDDockWidgets::Core::TitleBar *controller,
KDDockWidgets::Core::View *parent = nullptr)
: KDDockWidgets::QtWidgets::TitleBar(controller, parent)
{
initStyleSheet();
connect(this, &KDDockWidgets::QtWidgets::TitleBar::isFocusedChanged, this, [this] {
// Workaround QTBUG-51236, this makes the [isFocused=true] syntax useful
setStyleSheet(QString());
initStyleSheet();
});
}
~MyTitleBar_CSS() override;
void initStyleSheet()
{
// Or use qApp->setStyleSheet(), as you prefer
setStyleSheet(QStringLiteral("KDDockWidgets--TitleBarWidget {"
"background: blue"
"}"
"KDDockWidgets--TitleBarWidget:hover {"
"background: red"
"}"
"KDDockWidgets--TitleBarWidget[isFocused=true] {"
"background: green"
"}"));
}
};
MyTitleBar_CSS::~MyTitleBar_CSS()
{
}
#endif
|
