QGIS API Documentation 3.27.0-Master (f261cc1f8b)
qgsstatusbar.cpp
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1/***************************************************************************
2 qgsstatusbar.cpp
3 ----------------
4 begin : May 2017
5 copyright : (C) 2017 by Nyall Dawson
6 email : nyall dot dawson at gmail dot com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#include "qgsstatusbar.h"
19#include <QLayout>
20#include <QLineEdit>
21#include <QPalette>
22#include <QTimer>
23#include <QEvent>
24#include <QStatusBar>
25
27 : QWidget( parent )
28{
29 mLayout = new QHBoxLayout();
30 mLayout->setContentsMargins( 2, 0, 2, 0 );
31 mLayout->setSpacing( 6 );
32
33 mLineEdit = new QLineEdit( QString() );
34 mLineEdit->setDisabled( true );
35 mLineEdit->setFrame( false );
36 mLineEdit->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum );
37 QPalette palette = mLineEdit->palette();
38 palette.setColor( QPalette::Disabled, QPalette::Text, QPalette::WindowText );
39 mLineEdit->setPalette( palette );
40 mLineEdit->setStyleSheet( QStringLiteral( "* { border: 0; background-color: rgba(0, 0, 0, 0); }" ) );
41 mLayout->addWidget( mLineEdit, 10 );
42 setLayout( mLayout );
43}
44
45void QgsStatusBar::addPermanentWidget( QWidget *widget, int stretch, Anchor anchor )
46{
47 switch ( anchor )
48 {
49 case AnchorLeft:
50 mLayout->insertWidget( 0, widget, stretch, Qt::AlignLeft );
51 break;
52
53 case AnchorRight:
54 mLayout->addWidget( widget, stretch, Qt::AlignLeft );
55 break;
56 }
57}
58
59void QgsStatusBar::removeWidget( QWidget *widget )
60{
61 mLayout->removeWidget( widget );
62}
63
65{
66 return mLineEdit->text();
67}
68
69void QgsStatusBar::showMessage( const QString &text, int timeout )
70{
71 mLineEdit->setText( text );
72 mLineEdit->setCursorPosition( 0 );
73 if ( timeout > 0 )
74 {
75 if ( !mTempMessageTimer )
76 {
77 mTempMessageTimer = new QTimer( this );
78 connect( mTempMessageTimer, &QTimer::timeout, this, &QgsStatusBar::clearMessage );
79 mTempMessageTimer->setSingleShot( true );
80 }
81 mTempMessageTimer->start( timeout );
82 }
83 else if ( mTempMessageTimer )
84 {
85 delete mTempMessageTimer;
86 mTempMessageTimer = nullptr;
87 }
88}
89
91{
92 mLineEdit->setText( QString() );
93}
94
95void QgsStatusBar::setParentStatusBar( QStatusBar *statusBar )
96{
97 if ( mParentStatusBar )
98 QStatusBar::disconnect( mShowMessageConnection );
99
100 mParentStatusBar = statusBar;
101
102 if ( mParentStatusBar )
103 mShowMessageConnection = connect( mParentStatusBar, &QStatusBar::messageChanged, this, [this]( const QString & message ) { showMessage( message ); } );
104}
105
106void QgsStatusBar::changeEvent( QEvent *event )
107{
108 QWidget::changeEvent( event );
109
110 if ( event->type() == QEvent::FontChange )
111 {
112 mLineEdit->setFont( font() );
113 }
114}
Anchor
Placement anchor for widgets.
Definition: qgsstatusbar.h:54
@ AnchorLeft
Anchor widget to left of status bar.
Definition: qgsstatusbar.h:55
@ AnchorRight
Anchor widget to right of status bar.
Definition: qgsstatusbar.h:56
void clearMessage()
Removes any temporary message being shown.
void removeWidget(QWidget *widget)
Removes a widget from the status bar.
QgsStatusBar(QWidget *parent=nullptr)
Constructor for QgsStatusBar.
void changeEvent(QEvent *event) override
void addPermanentWidget(QWidget *widget, int stretch=0, Anchor anchor=AnchorRight)
Adds the given widget permanently to this status bar, reparenting the widget if it isn't already a ch...
QString currentMessage() const
Returns the current message shown in the status bar.
void setParentStatusBar(QStatusBar *statusBar)
Sets the parent status bar.
void showMessage(const QString &message, int timeout=0)
Displays the given message for the specified number of milli-seconds (timeout).