QGIS API Documentation  3.23.0-Master (dd0cd13a00)
qgsfeaturelistviewdelegate.cpp
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1 /***************************************************************************
2  qgsfeaturelistviewdelegate.cpp
3  ---------------------
4  begin : February 2013
5  copyright : (C) 2013 by Matthias Kuhn
6  email : matthias at opengis dot ch
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  ***************************************************************************/
16 #include "qgsvectorlayer.h"
17 #include "qgsattributetablemodel.h"
18 #include "qgsfeaturelistmodel.h"
19 #include "qgsapplication.h"
22 
23 #include <QHBoxLayout>
24 #include <QPushButton>
25 #include <QLabel>
26 #include <QApplication>
27 #include <QMouseEvent>
28 #include <QObject>
29 
31  : QItemDelegate( parent )
32  , mListModel( listModel )
33  , mCurrentFeatureEdited( false )
34 {
35 }
36 
38 {
39  if ( pos.x() > ICON_SIZE )
40  {
41  return EditElement;
42  }
43  else
44  {
45  return SelectionElement;
46  }
47 }
48 
50 {
51  mFeatureSelectionModel = featureSelectionModel;
52 }
53 
55 {
56  mCurrentFeatureEdited = state;
57 }
58 
59 void QgsFeatureListViewDelegate::setEditSelectionModel( QItemSelectionModel *editSelectionModel )
60 {
61  mEditSelectionModel = editSelectionModel;
62 }
63 
64 QSize QgsFeatureListViewDelegate::sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const
65 {
66  Q_UNUSED( index )
67  const int height = ICON_SIZE;
68  return QSize( option.rect.width(), std::max( height, option.fontMetrics.height() ) );
69 }
70 
71 void QgsFeatureListViewDelegate::paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
72 {
73  const bool isEditSelection = mEditSelectionModel && mEditSelectionModel->isSelected( mListModel->mapToMaster( index ) );
74 
75  QStyleOptionViewItem textOption = option;
76  textOption.state |= QStyle::State_Enabled;
77  if ( isEditSelection )
78  {
79  textOption.state |= QStyle::State_Selected;
80  }
81  drawBackground( painter, textOption, index );
82 
83 
84  static QPixmap sSelectedIcon;
85  if ( sSelectedIcon.isNull() )
86  sSelectedIcon = QgsApplication::getThemePixmap( QStringLiteral( "/mIconSelected.svg" ) );
87  static QPixmap sDeselectedIcon;
88  if ( sDeselectedIcon.isNull() )
89  sDeselectedIcon = QgsApplication::getThemePixmap( QStringLiteral( "/mIconDeselected.svg" ) );
90 
91  const QString text = index.model()->data( index, Qt::EditRole ).toString();
92  const QgsFeatureListModel::FeatureInfo featInfo = index.model()->data( index, QgsFeatureListModel::Role::FeatureInfoRole ).value<QgsFeatureListModel::FeatureInfo>();
93 
94  // Icon layout options
95  const QStyleOptionViewItem iconOption;
96 
97  QRect iconLayoutBounds( option.rect.x(), option.rect.y(), option.rect.height(), option.rect.height() );
98 
99  QPixmap icon = mFeatureSelectionModel->isSelected( index ) ? sSelectedIcon : sDeselectedIcon;
100 
101  // Scale up the icon if needed
102  if ( option.rect.height() > ICON_SIZE )
103  {
104  icon = icon.scaledToHeight( option.rect.height(), Qt::SmoothTransformation );
105  }
106 
107  drawDecoration( painter, iconOption, iconLayoutBounds, icon );
108 
109  // if conditional style also has an icon, draw that too
110  const QVariant conditionalIcon = index.model()->data( index, Qt::DecorationRole );
111  if ( conditionalIcon.isValid() )
112  {
113  const QPixmap pixmap = conditionalIcon.value< QPixmap >();
114  iconLayoutBounds.moveLeft( iconLayoutBounds.x() + icon.width() + QFontMetrics( textOption.font ).horizontalAdvance( 'X' ) );
115  iconLayoutBounds.setTop( option.rect.y() + ( option.rect.height() - pixmap.height() ) / 2.0 );
116  iconLayoutBounds.setHeight( pixmap.height() );
117  drawDecoration( painter, iconOption, iconLayoutBounds, pixmap );
118  }
119 
120  // Text layout options
121  const QRect textLayoutBounds( iconLayoutBounds.x() + iconLayoutBounds.width(), option.rect.y(), option.rect.width() - ( iconLayoutBounds.x() + iconLayoutBounds.width() ), option.rect.height() );
122 
123  // start with font and foreground color from model's FontRole
124  const QVariant font = index.model()->data( index, Qt::FontRole );
125  if ( font.isValid() )
126  {
127  textOption.font = font.value< QFont >();
128  }
129 #if QT_VERSION < QT_VERSION_CHECK(5, 13, 0)
130  const QVariant textColor = index.model()->data( index, Qt::TextColorRole );
131 #else
132  const QVariant textColor = index.model()->data( index, Qt::ForegroundRole );
133 #endif
134  if ( textColor.isValid() )
135  {
136  textOption.palette.setColor( QPalette::Text, textColor.value< QColor >() );
137  }
138 
139  if ( featInfo.isNew )
140  {
141  textOption.font.setStyle( QFont::StyleItalic );
142  textOption.palette.setColor( QPalette::Text, Qt::darkGreen );
143  textOption.palette.setColor( QPalette::HighlightedText, Qt::darkGreen );
144  }
145  else if ( featInfo.isEdited || ( mCurrentFeatureEdited && isEditSelection ) )
146  {
147  textOption.font.setStyle( QFont::StyleItalic );
148  textOption.palette.setColor( QPalette::Text, Qt::red );
149  textOption.palette.setColor( QPalette::HighlightedText, Qt::red );
150  }
151 
152  drawDisplay( painter, textOption, textLayoutBounds, text );
153 }
static QPixmap getThemePixmap(const QString &name, const QColor &foreColor=QColor(), const QColor &backColor=QColor(), int size=16)
Helper to get a theme icon as a pixmap.
virtual QModelIndex mapToMaster(const QModelIndex &proxyIndex) const
QgsFeatureListViewDelegate(QgsFeatureListModel *listModel, QObject *parent=nullptr)
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override
void setEditSelectionModel(QItemSelectionModel *editSelectionModel)
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
void setFeatureSelectionModel(QgsFeatureSelectionModel *featureSelectionModel)
virtual bool isSelected(QgsFeatureId fid)
Returns the selection status of a given feature id.
bool isEdited
True if feature has been edited.
bool isNew
True if feature is a newly added feature.