Add point editor.

pointeditor.cpp

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) Kreogist Dev Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#include <QLineEdit>
+#include <QLabel>
+#include <QGridLayout>
+#include <QPushButton>
+#include <QBoxLayout>
+#include <QScopedPointer>
+
+#include "pointeditor.h"
+
+#include <QDebug>
+
+QPointF PointEditor::getPoint(bool &accept,
+                              const QPointF &point)
+{
+    //Generate a point editor.
+    QScopedPointer<PointEditor> editor(new PointEditor);
+    //Display a point.
+    editor->setPoint(point.isNull()?QPointF(0,0):point);
+    //Launch the point editor.
+    accept=(QDialog::Accepted==editor->exec());
+    return accept?editor->point():QPointF();
+}
+
+void PointEditor::setPoint(const QPointF &point)
+{
+    //Make the x and y edit to display the point.
+    m_x->setText(QString::number(point.x()));
+    m_y->setText(QString::number(point.y()));
+}
+
+QPointF PointEditor::point() const
+{
+    return QPointF(m_x->text().toDouble(),
+                   m_y->text().toDouble());
+}
+
+void PointEditor::showEvent(QShowEvent *event)
+{
+    //Show the dialog.
+    QDialog::showEvent(event);
+    //Select all the data in m_x.
+    m_x->selectAll();
+    m_x->setFocus();
+}
+
+PointEditor::PointEditor(QWidget *parent) :
+    QDialog(parent),
+    m_x(new QLineEdit(this)),
+    m_y(new QLineEdit(this)),
+    m_ok(new QPushButton(tr("OK"), this)),
+    m_cancel(new QPushButton(tr("Cancel"), this))
+{
+    //Set ok button action.
+    connect(m_ok,
+            static_cast<void (QPushButton::*)(bool)>(&QPushButton::clicked),
+            [=]
+            {
+                done(QDialog::Accepted);
+            });
+    connect(m_cancel,
+            static_cast<void (QPushButton::*)(bool)>(&QPushButton::clicked),
+            [=]
+            {
+                done(QDialog::Rejected);
+            });
+    //Initial the main layout.
+    QBoxLayout *mainLayout=new QBoxLayout(QBoxLayout::LeftToRight,
+                                          this);
+    setLayout(mainLayout);
+
+    //Initial the edit area layout.
+    QGridLayout *editAreaLayout=new QGridLayout(mainLayout->widget());
+    mainLayout->addLayout(editAreaLayout, 1);
+
+    editAreaLayout->addWidget(new QLabel("X:"), 0, 0, 1, 1, Qt::AlignRight);
+    editAreaLayout->addWidget(m_x, 0, 1, 1, 1, Qt::AlignLeft);
+    editAreaLayout->addWidget(new QLabel("Y:"), 1, 0, 1, 1, Qt::AlignRight);
+    editAreaLayout->addWidget(m_y, 1, 1, 1, 1, Qt::AlignLeft);
+
+    //Initial the button area.
+    QBoxLayout *buttonLayout=new QBoxLayout(QBoxLayout::TopToBottom,
+                                            mainLayout->widget());
+    mainLayout->addLayout(buttonLayout);
+    buttonLayout->addWidget(m_ok);
+    buttonLayout->addWidget(m_cancel);
+    buttonLayout->addStretch();
+}