Add a new example to show how to view and edit xlsx file with GUI

2014-01-08 13:33:29 +08:00
parent a7e2ee7430
commit 8b48dc5f56
6 changed files with 329 additions and 0 deletions
@@ -0,0 +1,162 @@
+/****************************************************************************
+** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
+** All right reserved.
+**
+** Permission is hereby granted, free of charge, to any person obtaining
+** a copy of this software and associated documentation files (the
+** "Software"), to deal in the Software without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Software, and to
+** permit persons to whom the Software is furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be
+** included in all copies or substantial portions of the Software.
+**
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+**
+****************************************************************************/
+
+#include "xlsxsheetmodel.h"
+#include "xlsxsheetmodel_p.h"
+#include "xlsxworksheet.h"
+
+QT_BEGIN_NAMESPACE_XLSX
+
+SheetModelPrivate::SheetModelPrivate(SheetModel *p)
+    :q_ptr(p)
+{
+
+}
+
+/*!
+ * \class SheetModel
+ *
+ *  Helper class for gui applicaiton user
+ *
+ *  \note SheetModel indices start from 0, while Worksheet
+ *  column/row indices start from 1.
+ */
+
+/*!
+ * Creates a model object with the given \a sheet and \a parent.
+ */
+SheetModel::SheetModel(Worksheet *sheet, QObject *parent)
+    :QAbstractTableModel(parent), d_ptr(new SheetModelPrivate(this))
+{
+    d_ptr->sheet = sheet;
+}
+
+/*!
+ * Destroys the model.
+ */
+SheetModel::~SheetModel()
+{
+    delete d_ptr;
+}
+
+int SheetModel::rowCount(const QModelIndex &/*parent*/) const
+{
+    Q_D(const SheetModel);
+    return d->sheet->dimension().lastRow();
+}
+
+
+int SheetModel::columnCount(const QModelIndex &/*parent*/) const
+{
+    Q_D(const SheetModel);
+    return d->sheet->dimension().lastColumn();
+}
+
+Qt::ItemFlags SheetModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid())
+        return Qt::NoItemFlags;
+    return Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsEditable;
+}
+
+QVariant SheetModel::data(const QModelIndex &index, int role) const
+{
+    Q_D(const SheetModel);
+
+    if (!index.isValid())
+        return QVariant();
+
+    Cell *cell = d->sheet->cellAt(index.row()+1, index.column()+1);
+    if (!cell)
+        return QVariant();
+    QVariant userFriendlyValue = d->sheet->read(index.row()+1, index.column()+1);
+
+    if (role == Qt::DisplayRole) {
+        if (cell->isDateTime())
+            return userFriendlyValue;
+        return cell->value();
+    } else if (role == Qt::EditRole) {
+        return userFriendlyValue;
+    }
+
+    return QVariant();
+}
+
+/*
+ * Copy from xlsxutility.cpp, so this example don't depend on the xlsx-private
+ * This function should be removed once this class moved to the xlsx library.
+ */
+static QString col_to_name(int col_num)
+{
+    QString col_str;
+
+    int remainder;
+    while (col_num) {
+        remainder = col_num % 26;
+        if (remainder == 0)
+            remainder = 26;
+        col_str.prepend(QChar('A'+remainder-1));
+        col_num = (col_num - 1) / 26;
+    }
+
+    return col_str;
+}
+
+QVariant SheetModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if (role == Qt::DisplayRole) {
+        if (orientation == Qt::Horizontal)
+            return col_to_name(section + 1);
+        else
+            return QString::number(section + 1);
+    }
+    return QVariant();
+}
+
+bool SheetModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+    Q_D(const SheetModel);
+
+    if (!index.isValid())
+        return false;
+
+    if (role == Qt::EditRole) {
+        if (d->sheet->write(index.row()+1, index.column()+1, value) == 0)
+            return true;
+    }
+
+    return false;
+}
+
+/*!
+ * Returns the sheet object.
+ */
+Worksheet *SheetModel::sheet() const
+{
+    Q_D(const SheetModel);
+    return d->sheet;
+}
+
+QT_END_NAMESPACE_XLSX