1 /***************************************************************************
2 qgsscalewidget.cpp
3 --------------------------------------
4 Date : 08.01.2015
5 Copyright : (C) 2014 Denis Rouzaud
6 Email : denis.rouzaud@gmail.com
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 <QHBoxLayout>
17
18 #include "qgsapplication.h"
19 #include "qgsscalewidget.h"
20 #include "qgsmapcanvas.h"
21 #include "qgsproject.h"
22 #include "qgslayoutmanager.h"
23 #include "qgslayoutitemmap.h"
24 #include "qgsprintlayout.h"
25
26 #include <QMenu>
27
QgsScaleWidget(QWidget * parent)28 QgsScaleWidget::QgsScaleWidget( QWidget *parent )
29 : QWidget( parent )
30 {
31 QHBoxLayout *layout = new QHBoxLayout( this );
32 layout->setContentsMargins( 0, 0, 0, 0 );
33 layout->setSpacing( 6 );
34
35 mScaleComboBox = new QgsScaleComboBox( this );
36 layout->addWidget( mScaleComboBox );
37
38 mCurrentScaleButton = new QToolButton( this );
39 mCurrentScaleButton->setToolTip( tr( "Set to current canvas scale" ) );
40 mCurrentScaleButton->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "/mActionMapIdentification.svg" ) ) );
41
42 mMenu = new QMenu( this );
43 mCurrentScaleButton->setMenu( mMenu );
44 mCurrentScaleButton->setPopupMode( QToolButton::MenuButtonPopup );
45 connect( mMenu, &QMenu::aboutToShow, this, &QgsScaleWidget::menuAboutToShow );
46
47 layout->addWidget( mCurrentScaleButton );
48 mCurrentScaleButton->hide();
49
50 connect( mScaleComboBox, &QgsScaleComboBox::scaleChanged, this, &QgsScaleWidget::scaleChanged );
51 connect( mCurrentScaleButton, &QAbstractButton::clicked, this, &QgsScaleWidget::setScaleFromCanvas );
52 }
53
setShowCurrentScaleButton(bool showCurrentScaleButton)54 void QgsScaleWidget::setShowCurrentScaleButton( bool showCurrentScaleButton )
55 {
56 mShowCurrentScaleButton = showCurrentScaleButton;
57 mCurrentScaleButton->setVisible( mShowCurrentScaleButton && mCanvas );
58 }
59
setMapCanvas(QgsMapCanvas * canvas)60 void QgsScaleWidget::setMapCanvas( QgsMapCanvas *canvas )
61 {
62 mCanvas = canvas;
63 mCurrentScaleButton->setVisible( mShowCurrentScaleButton && mCanvas );
64 }
65
isNull() const66 bool QgsScaleWidget::isNull() const
67 {
68 return mScaleComboBox->isNull();
69 }
70
setAllowNull(bool allowNull)71 void QgsScaleWidget::setAllowNull( bool allowNull )
72 {
73 mScaleComboBox->setAllowNull( allowNull );
74 }
75
allowNull() const76 bool QgsScaleWidget::allowNull() const
77 {
78 return mScaleComboBox->allowNull();
79 }
80
setScaleFromCanvas()81 void QgsScaleWidget::setScaleFromCanvas()
82 {
83 if ( !mCanvas )
84 return;
85
86 setScale( mCanvas->scale() );
87 }
88
setNull()89 void QgsScaleWidget::setNull()
90 {
91 mScaleComboBox->setNull();
92 }
93
setScale(double scale)94 void QgsScaleWidget::setScale( double scale )
95 {
96 mScaleComboBox->setScale( scale );
97 }
98
menuAboutToShow()99 void QgsScaleWidget::menuAboutToShow()
100 {
101 mMenu->clear();
102
103 double scale = mCanvas->scale();
104 QAction *canvasScaleAction = new QAction( QgsApplication::getThemeIcon( QStringLiteral( "/mActionMapIdentification.svg" ) ),
105 tr( "Current Canvas Scale (1:%1)" ).arg( qgsDoubleToString( scale, 0 ) ), mMenu );
106 connect( canvasScaleAction, &QAction::triggered, this, [this, scale] { setScale( scale ); } );
107 mMenu->addAction( canvasScaleAction );
108
109 bool first = true;
110 if ( QgsLayoutManager *manager = QgsProject::instance()->layoutManager() )
111 {
112 const QList<QgsPrintLayout *> layouts = manager->printLayouts();
113 for ( const QgsPrintLayout *layout : layouts )
114 {
115 QList< QgsLayoutItemMap * > maps;
116 layout->layoutItems( maps );
117 if ( maps.empty() )
118 continue;
119
120 if ( first )
121 mMenu->addSeparator();
122
123 first = false;
124
125 QMenu *layoutMenu = new QMenu( layout->name(), mMenu );
126 for ( const QgsLayoutItemMap *map : std::as_const( maps ) )
127 {
128 scale = map->scale();
129 QAction *mapScaleAction = new QAction( tr( "%1 (1:%2)" ).arg( map->displayName(), qgsDoubleToString( scale, 0 ) ), mMenu );
130 connect( mapScaleAction, &QAction::triggered, this, [this, scale] { setScale( scale ); } );
131 layoutMenu->addAction( mapScaleAction );
132 }
133 mMenu->addMenu( layoutMenu );
134 }
135 }
136 }
137