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50 | |
51 | #include "freezetablewidget.h" |
52 | |
53 | #include <QScrollBar> |
54 | #include <QHeaderView> |
55 | |
56 | //! [constructor] |
57 | FreezeTableWidget::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 | |
79 | FreezeTableWidget::~FreezeTableWidget() |
80 | { |
81 | delete frozenTableView; |
82 | } |
83 | |
84 | //! [init part1] |
85 | void 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] |
119 | void 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 | |
127 | void FreezeTableWidget::updateSectionHeight(int logicalIndex, int /* oldSize */, int newSize) |
128 | { |
129 | frozenTableView->setRowHeight(row: logicalIndex, height: newSize); |
130 | } |
131 | //! [sections] |
132 | |
133 | |
134 | //! [resize] |
135 | void FreezeTableWidget::resizeEvent(QResizeEvent * event) |
136 | { |
137 | QTableView::resizeEvent(event); |
138 | updateFrozenTableGeometry(); |
139 | } |
140 | //! [resize] |
141 | |
142 | |
143 | //! [navigate] |
144 | QModelIndex 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 | |
159 | void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){ |
160 | if (index.column() > 0) |
161 | QTableView::scrollTo(index, hint); |
162 | } |
163 | |
164 | //! [geometry] |
165 | void 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 | |