1 files changed, 122 insertions, 0 deletions
diff --git a/src/charts/axis/editableaxislabel.cpp b/src/charts/axis/editableaxislabel.cpp
new file mode 100644
index 00000000..aa4b0554
--- /dev/null
+++ b/src/charts/axis/editableaxislabel.cpp
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/editableaxislabel_p.h>
+
+#include <QtGui/qtextcursor.h>
+#include <QtGui/qtextdocument.h>
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+EditableAxisLabel::EditableAxisLabel(QGraphicsItem *parent) :
+    QGraphicsTextItem(parent)
+{
+
+}
+
+void EditableAxisLabel::focusInEvent(QFocusEvent *event)
+{
+    m_htmlBeforeEdit = toHtml();
+    setTextWidth(-1);
+    setInitialEditValue();
+    m_editing = true;
+    QGraphicsTextItem::focusInEvent(event);
+}
+
+void EditableAxisLabel::focusOutEvent(QFocusEvent *event)
+{
+    // perform the modifications before calling finishEditing
+    // because finishEditing emits signals that can trigger
+    // range change which might invalidate the current label
+    QGraphicsTextItem::focusOutEvent(event);
+    setTextInteractionFlags(Qt::NoTextInteraction);
+    m_editing = false;
+
+    finishEditing();
+}
+
+bool EditableAxisLabel::sceneEvent(QEvent *event)
+{
+    if (m_editable && event->type() == QEvent::GraphicsSceneMouseDoubleClick) {
+        setTextInteractionFlags(Qt::TextEditorInteraction);
+
+        bool ret = QGraphicsTextItem::sceneEvent(event);
+        // QGraphicsTextItem::sceneevent needs to be processed before
+        // the focus and text selection
+        setFocus(Qt::MouseFocusReason);
+        QTextCursor cursor = textCursor();
+        cursor.select(QTextCursor::Document);
+        setTextCursor(cursor);
+        return ret;
+    }
+    return QGraphicsTextItem::sceneEvent(event);
+}
+
+void EditableAxisLabel::setEditable(bool editable)
+{
+    m_editable = editable;
+}
+
+void EditableAxisLabel::reloadBeforeEditContent()
+{
+    resetBeforeEditValue();
+    setHtml(m_htmlBeforeEdit);
+}
+
+QRectF EditableAxisLabel::boundingRect() const
+{
+    QRectF ret = QGraphicsTextItem::boundingRect();
+
+    // add 2px margin to allow the cursor to
+    // show up properly when editing
+    if (m_editing)
+        ret.setWidth(ret.width() + 2);
+    return ret;
+}
+
+bool EditableAxisLabel::isEditEndingKeyPress(QKeyEvent *event)
+{
+    if (event->text().length() >= 1) {
+        // finish editing with enter or ESC
+        if (event->key() == Qt::Key_Enter ||
+                event->key() == Qt::Key_Return) {
+            clearFocus();
+            return true;
+        } else if (event->key() == Qt::Key_Escape) {
+            document()->setHtml(m_htmlBeforeEdit);
+            clearFocus();
+            return true;
+        }
+    }
+    return false;
+}
+
+QT_CHARTS_END_NAMESPACE
+
+#include "moc_editableaxislabel_p.cpp"