252 lines
6.2 KiB
C++
252 lines
6.2 KiB
C++
/****************************************************************************
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* Copyright (c) 2005 Alexander Wiedenbruch <mail@wiedenbruch.de>
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* Copyright (c) 2007 Matt Broadstone <mbroadst@gmail.com>
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*
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* This file is part of SuperKaramba.
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*
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* SuperKaramba is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* SuperKaramba is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with SuperKaramba; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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****************************************************************************/
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#include <QPainter>
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#include <QStyleOptionGraphicsItem>
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#include <QGraphicsSceneMouseEvent>
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#include <kdebug.h>
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#include "lineedit.h"
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namespace Plasma
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{
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class LineEdit::Private
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{
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public:
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Private()
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{
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}
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~Private()
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{
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}
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QFont m_font;
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QColor m_bgColor;
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QColor m_fgColor;
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QColor m_fontColor;
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QColor m_selectedTextColor;
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QColor m_selectionColor;
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QString m_text;
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QTextLayout m_textLayout;
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double m_hscroll;
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int m_cursorPos;
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bool m_cursorVisible;
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QTimer m_cursorTimer;
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};
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LineEdit::LineEdit(Plasma::Applet* a, QRectF size)
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: Widget(a, size),
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d(new Private)
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{
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d->m_bgColor = QColor(200, 200, 200);
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d->m_fgColor = QColor(60, 60, 60);
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setFlags(QGraphicsItem::ItemIsFocusable);
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setAcceptedMouseButtons(Qt::LeftButton);
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connect(&d->m_cursorTimer, SIGNAL(timeout()), (QObject*)this, SLOT(blinkCursor()));
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d->m_cursorTimer.start(1000);
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}
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LineEdit::~LineEdit()
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{
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delete d;
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}
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/*
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Some code in this method is copied from QLineEdit.
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Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
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*/
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void LineEdit::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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painter->setPen(d->m_fgColor);
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QBrush oldBrush = painter->brush();
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painter->setBrush(d->m_bgColor);
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painter->drawRect(boundingRect());
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painter->setBrush(oldBrush);
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if(d->m_textLayout.lineCount() == 0)
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return;
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QTextLine line = d->m_textLayout.lineAt(0);
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if(!line.isValid())
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return;
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int widthUsed = qRound(line.naturalTextWidth()) + 1 + 5;
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QRectF innerRect(boundingRect().x() + 5, boundingRect().y() + 2,
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boundingRect().width() - 10, boundingRect().height() - 4);
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painter->setClipRect(innerRect);
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QPointF topLeft = innerRect.topLeft();
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double curPos = line.cursorToX(d->m_cursorPos);
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if (5 + widthUsed <= innerRect.width())
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d->m_hscroll = 0;
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else if (curPos - d->m_hscroll >= innerRect.width())
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d->m_hscroll = curPos - innerRect.width() + 1;
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else if (curPos - d->m_hscroll < 0)
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d->m_hscroll = curPos;
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else if (widthUsed - d->m_hscroll < innerRect.width())
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d->m_hscroll = widthUsed - innerRect.width();
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topLeft.rx() -= d->m_hscroll;
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painter->setPen(d->m_fontColor);
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d->m_textLayout.draw(painter, topLeft, QVector<QTextLayout::FormatRange>(),
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innerRect);
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if(hasFocus() && d->m_cursorVisible)
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d->m_textLayout.drawCursor(painter, topLeft, d->m_cursorPos);
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}
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void LineEdit::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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QTextLine line = d->m_textLayout.lineAt(0);
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QPoint pos = mapFromParent(event->pos()).toPoint() - boundingRect().topLeft().toPoint();
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d->m_cursorPos = line.xToCursor(pos.x() - 5 + d->m_hscroll);
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d->m_cursorVisible = true;
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update();
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}
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void LineEdit::focusOutEvent(QFocusEvent *event)
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{
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Q_UNUSED(event);
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d->m_cursorTimer.stop();
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update();
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}
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void LineEdit::blinkCursor()
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{
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d->m_cursorVisible = !d->m_cursorVisible;
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update();
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}
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void LineEdit::keyPressEvent(QKeyEvent *event)
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{
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bool append = true;
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switch(event->key())
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{
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case Qt::Key_Backspace:
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if(d->m_cursorPos > 0)
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{
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d->m_text.remove(d->m_cursorPos-1, 1);
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d->m_cursorPos--;
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}
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append = false;
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break;
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case Qt::Key_Delete:
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d->m_text.remove(d->m_cursorPos, 1);
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append = false;
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break;
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case Qt::Key_Left:
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d->m_cursorPos--;
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append = false;
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break;
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case Qt::Key_Right:
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d->m_cursorPos++;
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append = false;
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break;
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case Qt::Key_Home:
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d->m_cursorPos = 0;
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append = false;
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break;
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case Qt::Key_End:
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d->m_cursorPos = d->m_text.length();
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append = false;
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break;
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case Qt::Key_Enter:
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case Qt::Key_Return:
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append = false;
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break;
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}
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if(append)
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{
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d->m_text.insert(d->m_cursorPos, event->text());
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d->m_cursorPos += event->text().length();
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}
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if(d->m_cursorPos < 0)
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d->m_cursorPos = 0;
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if(d->m_cursorPos > d->m_text.length())
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d->m_cursorPos = d->m_text.length();
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d->m_textLayout.setText(d->m_text);
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d->m_textLayout.setFont(d->m_font);
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d->m_textLayout.beginLayout();
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QTextLine line = d->m_textLayout.createLine();
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line.setLineWidth(m_boundingBox.width());
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line.setPosition(QPointF(0, 0));
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d->m_textLayout.endLayout();
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d->m_cursorVisible = true;
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update();
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}
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void LineEdit::setValue(QString text)
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{
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d->m_text = text;
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d->m_textLayout.setText(d->m_text);
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d->m_textLayout.setFont(d->m_font);
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d->m_textLayout.beginLayout();
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QTextLine line = d->m_textLayout.createLine();
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line.setLineWidth(m_boundingBox.width());
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line.setPosition(QPointF(0, 0));
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d->m_textLayout.endLayout();
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update();
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}
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QString LineEdit::getStringValue() const
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{
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return d->m_text;
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}
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#include "lineedit.moc"
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} // Plasma namespace
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