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Create a new ClearButton class from scratch that will show the KDE clear
location bar icon rather then the circle with X. This new class is released under the BSD license.
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|---|---|---|
| @@ -1,110 +1,92 @@ | ||
| /* | ||
| * Copyright 2008 Benjamin C. Meyer <ben@meyerhome.net> | ||
| /** | ||
| * Copyright (c) 2009, Benjamin C. Meyer <ben@meyerhome.net> | ||
| * | ||
| * 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. | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * 3. Neither the name of the Benjamin Meyer nor the names of its contributors | ||
| * may be used to endorse or promote products derived from this software | ||
| * without specific prior written permission. | ||
| * | ||
| * 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 | ||
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
| * SUCH DAMAGE. | ||
| */ | ||
|
|
||
| /**************************************************************************** | ||
| ** | ||
| ** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved. | ||
| ** | ||
| ** This file is part of the demonstration applications of the Qt Toolkit. | ||
| ** | ||
| ** This file may be used under the terms of the GNU General Public | ||
| ** License versions 2.0 or 3.0 as published by the Free Software | ||
| ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3 | ||
| ** included in the packaging of this file. Alternatively you may (at | ||
| ** your option) use any later version of the GNU General Public | ||
| ** License if such license has been publicly approved by Trolltech ASA | ||
| ** (or its successors, if any) and the KDE Free Qt Foundation. In | ||
| ** addition, as a special exception, Trolltech gives you certain | ||
| ** additional rights. These rights are described in the Trolltech GPL | ||
| ** Exception version 1.2, which can be found at | ||
| ** http://www.trolltech.com/products/qt/gplexception/ and in the file | ||
| ** GPL_EXCEPTION.txt in this package. | ||
| ** | ||
| ** Please review the following information to ensure GNU General | ||
| ** Public Licensing requirements will be met: | ||
| ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If | ||
| ** you are unsure which license is appropriate for your use, please | ||
| ** review the following information: | ||
| ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview | ||
| ** or contact the sales department at sales@trolltech.com. | ||
| ** | ||
| ** In addition, as a special exception, Trolltech, as the sole | ||
| ** copyright holder for Qt Designer, grants users of the Qt/Eclipse | ||
| ** Integration plug-in the right for the Qt/Eclipse Integration to | ||
| ** link to functionality provided by Qt Designer and its related | ||
| ** libraries. | ||
| ** | ||
| ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, | ||
| ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR | ||
| ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly | ||
| ** granted herein. | ||
| ** | ||
| ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE | ||
| ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | ||
| ** | ||
| ****************************************************************************/ | ||
|
|
||
| #include "clearbutton.h" | ||
|
|
||
| #include <qpainter.h> | ||
| /* | ||
| #include <qevent.h> | ||
| #include <qmenu.h> | ||
| #include <qstyle.h> | ||
| #include <qstyleoption.h> | ||
|
|
||
| #include <qdebug.h> | ||
| */ | ||
| ClearButton::ClearButton(QWidget *parent) | ||
| : QAbstractButton(parent) | ||
| { | ||
| setCursor(Qt::ArrowCursor); | ||
| setToolTip(tr("Clear")); | ||
| setVisible(false); | ||
| setFocusPolicy(Qt::NoFocus); | ||
| setToolTip(tr("Clear")); | ||
| setMinimumSize(22, 22); | ||
| setVisible(false); | ||
|
|
||
| #if QT_VERSION >= 0x040600 | ||
| // First check for a style icon, current KDE provides one | ||
| if (m_styleImage.isNull()) { | ||
| QLatin1String iconName = (layoutDirection() == Qt::RightToLeft) | ||
| ? QLatin1String("edit-clear-locationbar-ltr") | ||
| : QLatin1String("edit-clear-locationbar-rtl"); | ||
| QIcon icon = QIcon::fromTheme(iconName); | ||
| if (!icon.isNull()) | ||
| m_styleImage = icon.pixmap(16, 16).toImage(); | ||
| } | ||
| #endif | ||
| } | ||
|
|
||
| void ClearButton::textChanged(const QString &text) | ||
| { | ||
| setVisible(!text.isEmpty()); | ||
| } | ||
|
|
||
| void ClearButton::paintEvent(QPaintEvent *event) | ||
| { | ||
| Q_UNUSED(event); | ||
| QPainter painter(this); | ||
| int height = this->height(); | ||
|
|
||
| if (!m_styleImage.isNull()) { | ||
| int x = (width() - m_styleImage.width()) / 2 - 1; | ||
| int y = (height() - m_styleImage.height()) / 2 - 1; | ||
| painter.drawImage(x, y, m_styleImage); | ||
| return; | ||
| } | ||
|
|
||
| // Fall back to boring circle X | ||
| painter.setRenderHint(QPainter::Antialiasing, true); | ||
| QColor color = palette().color(QPalette::Mid); | ||
| painter.setBrush(isDown() | ||
| ? palette().color(QPalette::Dark) | ||
| : palette().color(QPalette::Mid)); | ||
| painter.setPen(painter.brush().color()); | ||
| int size = width(); | ||
| int offset = size / 5; | ||
| int radius = size - offset * 2; | ||
| painter.drawEllipse(offset, offset, radius, radius); | ||
|
|
||
| painter.setPen(palette().color(QPalette::Base)); | ||
| int border = offset * 2; | ||
| painter.drawLine(border, border, width() - border, height - border); | ||
| painter.drawLine(border, height - border, width() - border, border); | ||
| } | ||
| QPalette p = palette(); | ||
| QColor circleColor = isDown() ? p.color(QPalette::Dark) : p.color(QPalette::Mid); | ||
| QColor xColor = p.color(QPalette::Window); | ||
|
|
||
| void ClearButton::textChanged(const QString &text) | ||
| { | ||
| setVisible(!text.isEmpty()); | ||
| // draw circle | ||
| painter.setBrush(circleColor); | ||
| painter.setPen(circleColor); | ||
| int padding = width() / 5; | ||
| int circleRadius = width() - (padding * 2); | ||
| painter.drawEllipse(padding, padding, circleRadius, circleRadius); | ||
|
|
||
| // draw X | ||
| painter.setPen(xColor); | ||
| padding = padding * 2; | ||
| painter.drawLine(padding, padding, width() - padding, width() - padding); | ||
| painter.drawLine(padding, height() - padding, width() - padding, padding); | ||
| } | ||
|
|
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