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50
51#include "freezetablewidget.h"
52
53#include <QScrollBar>
54#include <QHeaderView>
55
56//! [constructor]
57FreezeTableWidget::FreezeTableWidget(QAbstractItemModel * model)
58{
59 setModel(model);
60 frozenTableView = new QTableView(this);
61
62 init();
63
64 //connect the headers and scrollbars of both tableviews together
65 connect(sender: horizontalHeader(),signal: &QHeaderView::sectionResized, receiver: this,
66 slot: &FreezeTableWidget::updateSectionWidth);
67 connect(sender: verticalHeader(),signal: &QHeaderView::sectionResized, receiver: this,
68 slot: &FreezeTableWidget::updateSectionHeight);
69
70 connect(sender: frozenTableView->verticalScrollBar(), signal: &QAbstractSlider::valueChanged,
71 receiver: verticalScrollBar(), slot: &QAbstractSlider::setValue);
72 connect(sender: verticalScrollBar(), signal: &QAbstractSlider::valueChanged,
73 receiver: frozenTableView->verticalScrollBar(), slot: &QAbstractSlider::setValue);
74
75
76}
77//! [constructor]
78
79FreezeTableWidget::~FreezeTableWidget()
80{
81 delete frozenTableView;
82}
83
84//! [init part1]
85void FreezeTableWidget::init()
86{
87 frozenTableView->setModel(model());
88 frozenTableView->setFocusPolicy(Qt::NoFocus);
89 frozenTableView->verticalHeader()->hide();
90 frozenTableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
91
92 viewport()->stackUnder(frozenTableView);
93//! [init part1]
94
95//! [init part2]
96 frozenTableView->setStyleSheet("QTableView { border: none;"
97 "background-color: #8EDE21;"
98 "selection-background-color: #999}"); //for demo purposes
99 frozenTableView->setSelectionModel(selectionModel());
100 for (int col = 1; col < model()->columnCount(); ++col)
101 frozenTableView->setColumnHidden(column: col, hide: true);
102
103 frozenTableView->setColumnWidth(column: 0, width: columnWidth(column: 0) );
104
105 frozenTableView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
106 frozenTableView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
107 frozenTableView->show();
108
109 updateFrozenTableGeometry();
110
111 setHorizontalScrollMode(ScrollPerPixel);
112 setVerticalScrollMode(ScrollPerPixel);
113 frozenTableView->setVerticalScrollMode(ScrollPerPixel);
114}
115//! [init part2]
116
117
118//! [sections]
119void FreezeTableWidget::updateSectionWidth(int logicalIndex, int /* oldSize */, int newSize)
120{
121 if (logicalIndex == 0){
122 frozenTableView->setColumnWidth(column: 0, width: newSize);
123 updateFrozenTableGeometry();
124 }
125}
126
127void FreezeTableWidget::updateSectionHeight(int logicalIndex, int /* oldSize */, int newSize)
128{
129 frozenTableView->setRowHeight(row: logicalIndex, height: newSize);
130}
131//! [sections]
132
133
134//! [resize]
135void FreezeTableWidget::resizeEvent(QResizeEvent * event)
136{
137 QTableView::resizeEvent(event);
138 updateFrozenTableGeometry();
139 }
140//! [resize]
141
142
143//! [navigate]
144QModelIndex FreezeTableWidget::moveCursor(CursorAction cursorAction,
145 Qt::KeyboardModifiers modifiers)
146{
147 QModelIndex current = QTableView::moveCursor(cursorAction, modifiers);
148
149 if (cursorAction == MoveLeft && current.column() > 0
150 && visualRect(index: current).topLeft().x() < frozenTableView->columnWidth(column: 0) ){
151 const int newValue = horizontalScrollBar()->value() + visualRect(index: current).topLeft().x()
152 - frozenTableView->columnWidth(column: 0);
153 horizontalScrollBar()->setValue(newValue);
154 }
155 return current;
156}
157//! [navigate]
158
159void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){
160 if (index.column() > 0)
161 QTableView::scrollTo(index, hint);
162}
163
164//! [geometry]
165void FreezeTableWidget::updateFrozenTableGeometry()
166{
167 frozenTableView->setGeometry(ax: verticalHeader()->width() + frameWidth(),
168 ay: frameWidth(), aw: columnWidth(column: 0),
169 ah: viewport()->height()+horizontalHeader()->height());
170}
171//! [geometry]
172
173
174

source code of qtbase/examples/widgets/itemviews/frozencolumn/freezetablewidget.cpp