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annotate src/metadataview.cpp @ 3:248d5d1cdb38

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Add functionalty to control buttons and make picture resizable
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 23 Mar 2015 19:10:01 +0100
parents 97d2c8869c39
children e4748da7140b
rev   line source
2
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1 #include "metadataview.h"
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2 #include "qxtcsvmodel.h"
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3
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4 #include <QTextCodec>
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5 #include <QTableView>
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6 #include <QSortFilterProxyModel>
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7 #include <QVBoxLayout>
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8 #include <QLabel>
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9 #include <QDebug>
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10 #include <QHeaderView>
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11 #include <QModelIndex>
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12 #include <QItemSelectionModel>
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13
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14 MetaDataView::MetaDataView(QWidget *parent, Qt::WindowFlags f) :
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15 QWidget(parent, f) {
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16 /* Create models */
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17 mSortModel = new QSortFilterProxyModel;
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18 mCSVModel = new QxtCsvModel;
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19 setupGUI();
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20
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21 connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
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22 this, &MetaDataView::viewSelectionChanged);
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23 return;
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24 }
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25
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26 void MetaDataView::setupGUI() {
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27 QVBoxLayout *baseLayout = new QVBoxLayout;
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28 mView = new QTableView;
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29 mView->setModel(mSortModel);
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30
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31 mView->horizontalHeader()->setStretchLastSection(true);
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32 mView->resizeColumnsToContents();
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33 // mView->setColumnWidth(0, 60);
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34 mView->setSelectionBehavior(QAbstractItemView::SelectRows);
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35 mView->setSelectionMode(QAbstractItemView::SingleSelection);
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36 mView->setSortingEnabled(true);
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37 mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
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38
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39 baseLayout->addWidget(mView);
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40
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41 setLayout(baseLayout);
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42 }
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43
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44 QString MetaDataView::parseMetaData(const QString& filePath) {
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45 mCSVModel->setSource(filePath, true, ';', QTextCodec::codecForName("UTF8"));
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46 if (!mCSVModel->rowCount()) {
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47 return tr("Failed to parse file: '%1'").arg(filePath);
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48 }
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49
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50 mSortModel->setSourceModel(mCSVModel);
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51 qDebug() << "Parsed: " << mCSVModel->rowCount() << " rows.";
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52 return QString();
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53 }
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54
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55 void MetaDataView::viewSelectionChanged(const QItemSelection& selected,
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56 const QItemSelection& deselected) {
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57 /* One row selected */
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58 Q_ASSERT(selected.indexes().count() == mCSVModel->columnCount());
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59 const QModelIndex idx = selected.indexes()[0];
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60 const QString dateString = selected.indexes()[1].data().toString();
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61 bool ok;
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62 qint64 secondsSinceEpoch = dateString.toLongLong(&ok);
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63 if (!ok) {
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64 // TODO emit error
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65 qDebug() << "Unparsable date.";
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66 }
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67 QDateTime timestamp = QDateTime::fromMSecsSinceEpoch(secondsSinceEpoch * 1000);
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68 emit selectionChanged(idx.data().toString(), idx.row(), mSortModel->rowCount() - 1,
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69 timestamp);
2
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70 qDebug() << "Selection changed: " << idx.data();
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71 }
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72
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73 void MetaDataView::selectRow(int row) {
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74 QItemSelectionModel *selection = mView->selectionModel();
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75 if (!mSortModel->hasIndex(row, 0)) {
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76 qDebug() << "Invalid row: " << row;
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77 return;
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78 }
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79 QModelIndex newIdx = mSortModel->index(row, 0);
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80 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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81 }
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82
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83 void MetaDataView::selectPrevRow() {
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84 QItemSelectionModel *selection = mView->selectionModel();
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85 QModelIndexList selected = selection->selectedIndexes();
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86 int row = 0,
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87 col = 0;
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88 if (selected.isEmpty()) {
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89 qDebug() << "Selection empty. Start at row 0";
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90 if (!mSortModel->hasIndex(row, col)) {
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91 qDebug() << "Empty model. Failed to advance.";
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92 return;
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93 }
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94 } else {
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95 QModelIndex old = selection->selectedIndexes().first();
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96 if (!mSortModel->hasIndex(old.row() - 1, old.column())) {
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97 qDebug() << "No less rows.";
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98 return;
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99 }
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100 row = old.row() - 1;
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101 col = old.column();
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102 }
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103 QModelIndex newIdx = mSortModel->index(row, col);
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104 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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105 }
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106
2
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107 void MetaDataView::selectNextRow() {
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108 QItemSelectionModel *selection = mView->selectionModel();
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109 QModelIndexList selected = selection->selectedIndexes();
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110 int row = 0,
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111 col = 0;
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112 if (selected.isEmpty()) {
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113 qDebug() << "Selection empty. Start at row 0";
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114 if (!mSortModel->hasIndex(row, col)) {
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115 qDebug() << "Empty model. Failed to advance.";
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116 return;
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117 }
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118 } else {
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119 QModelIndex old = selection->selectedIndexes().first();
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120 if (!mSortModel->hasIndex(old.row() + 1, old.column())) {
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121 qDebug() << "No more rows.";
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122 return;
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123 }
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124 row = old.row() + 1;
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125 col = old.column();
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126 }
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127 QModelIndex newIdx = mSortModel->index(row, col);
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128 selection->select(newIdx, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
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129 }
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