QGIS API Documentation 3.37.0-Master (c2d15952569)
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qgsuserinputwidget.cpp
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1/***************************************************************************
2 qgsuserinputwidget.h
3 --------------------------------------
4 Date : 04.2015
5 Copyright : (C) 2015 Denis Rouzaud
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#include "qgsuserinputwidget.h"
17
18#include <QFrame>
19
21 : QgsFloatingWidget( parent ? parent->window() : nullptr )
22{
23 //TODO add title tr( "User Input Panel" )
24
25 QFrame *f = new QFrame();
26 f->setObjectName( QStringLiteral( "mUserInputContainer" ) );
27
28 QPalette pal = palette();
29 pal.setBrush( backgroundRole(), pal.window() );
30 f->setPalette( pal );
31 f->setAutoFillBackground( true );
32 f->setFrameShape( QFrame::StyledPanel );
33 f->setFrameShadow( QFrame::Plain );
34
35 mLayout = new QBoxLayout( QBoxLayout::TopToBottom );
36 mLayout->setAlignment( Qt::AlignRight | Qt::AlignTop );
37 f->setLayout( mLayout );
38
39 QBoxLayout *topLayout = new QBoxLayout( QBoxLayout::TopToBottom );
40 topLayout->setContentsMargins( 0, 0, 0, 0 );
41 topLayout->addWidget( f );
42 setLayout( topLayout );
43
44 // this allows the widget to be resized on demand
45 topLayout->setSizeConstraint( QLayout::SetFixedSize );
46 mLayout->setSizeConstraint( QLayout::SetFixedSize );
47
48 setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding );
49 hide();
50}
51
53{
54 QFrame *line = nullptr;
55 if ( mWidgetList.count() > 0 )
56 {
57 line = new QFrame( this );
58 line->setFrameShadow( QFrame::Sunken );
59 line->setFrameShape( mLayoutHorizontal ? QFrame::VLine : QFrame::HLine );
60 mLayout->addWidget( line );
61 }
62 mLayout->addWidget( widget );
63
64 connect( widget, &QObject::destroyed, this, &QgsUserInputWidget::widgetDestroyed );
65
66 mWidgetList.insert( widget, line );
67
68 show();
69 raise();
70 adjustSize();
71}
72
73void QgsUserInputWidget::widgetDestroyed( QObject *obj )
74{
75 if ( obj->isWidgetType() )
76 {
77 QWidget *w = qobject_cast<QWidget *>( obj );
78 const auto it = mWidgetList.find( w );
79 if ( it != mWidgetList.end() )
80 {
81 if ( QFrame *frame = it.value() )
82 {
83 frame->deleteLater();
84 }
85 mWidgetList.erase( it );
86 }
87 }
88 if ( mWidgetList.count() == 0 )
89 {
90 hide();
91 }
92}
93
94void QgsUserInputWidget::setLayoutDirection( QBoxLayout::Direction direction )
95{
96 mLayout->setDirection( direction );
97
98 const bool horizontal = direction == QBoxLayout::LeftToRight || direction == QBoxLayout::RightToLeft;
99 QMap<QWidget *, QFrame *>::const_iterator i = mWidgetList.constBegin();
100 while ( i != mWidgetList.constEnd() )
101 {
102 if ( auto *lValue = i.value() )
103 {
104 lValue->setFrameShape( horizontal ? QFrame::VLine : QFrame::HLine );
105 }
106 ++i;
107 }
108
109 adjustSize();
110}
111
112void QgsUserInputWidget::paintEvent( QPaintEvent *event )
113{
114 if ( mWidgetList.count() == 0 )
115 {
116 hide();
117 }
118 else
119 {
121 }
122}
A QWidget subclass for creating widgets which float outside of the normal Qt layout system.
void paintEvent(QPaintEvent *e) override
void paintEvent(QPaintEvent *event) override
QgsUserInputWidget(QWidget *parent=nullptr)
Constructor for QgsUserInputWidget.
void addUserInputWidget(QWidget *widget)
Add a widget to be displayed in the dock.