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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "filterwidget_p.h"
+#include "iconloader_p.h"
+
+#include <QtGui/QVBoxLayout>
+#include <QtGui/QHBoxLayout>
+#include <QtGui/QLineEdit>
+#include <QtGui/QFocusEvent>
+#include <QtGui/QPalette>
+#include <QtGui/QCursor>
+#include <QtGui/QToolButton>
+#include <QtGui/QPainter>
+#include <QtGui/QStyle>
+#include <QtGui/QStyleOption>
+
+#include <QtCore/QDebug>
+#include <QtCore/QPropertyAnimation>
+
+enum { debugFilter = 0 };
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal {
+
+HintLineEdit::HintLineEdit(QWidget *parent) :
+ QLineEdit(parent),
+ m_defaultFocusPolicy(focusPolicy()),
+ m_refuseFocus(false)
+{
+}
+
+IconButton::IconButton(QWidget *parent)
+ : QToolButton(parent)
+{
+ setCursor(Qt::ArrowCursor);
+}
+
+void IconButton::paintEvent(QPaintEvent *)
+{
+ QPainter painter(this);
+ // Note isDown should really use the active state but in most styles
+ // this has no proper feedback
+ QIcon::Mode state = QIcon::Disabled;
+ if (isEnabled())
+ state = isDown() ? QIcon::Selected : QIcon::Normal;
+ QPixmap iconpixmap = icon().pixmap(QSize(ICONBUTTON_SIZE, ICONBUTTON_SIZE),
+ state, QIcon::Off);
+ QRect pixmapRect = QRect(0, 0, iconpixmap.width(), iconpixmap.height());
+ pixmapRect.moveCenter(rect().center());
+ painter.setOpacity(m_fader);
+ painter.drawPixmap(pixmapRect, iconpixmap);
+}
+
+void IconButton::animateShow(bool visible)
+{
+ if (visible) {
+ QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
+ animation->setDuration(160);
+ animation->setEndValue(1.0);
+ animation->start(QAbstractAnimation::DeleteWhenStopped);
+ } else {
+ QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
+ animation->setDuration(160);
+ animation->setEndValue(0.0);
+ animation->start(QAbstractAnimation::DeleteWhenStopped);
+ }
+}
+
+bool HintLineEdit::refuseFocus() const
+{
+ return m_refuseFocus;
+}
+
+void HintLineEdit::setRefuseFocus(bool v)
+{
+ if (v == m_refuseFocus)
+ return;
+ m_refuseFocus = v;
+ setFocusPolicy(m_refuseFocus ? Qt::NoFocus : m_defaultFocusPolicy);
+}
+
+void HintLineEdit::mousePressEvent(QMouseEvent *e)
+{
+ if (debugFilter)
+ qDebug() << Q_FUNC_INFO;
+ // Explicitly focus on click.
+ if (m_refuseFocus && !hasFocus())
+ setFocus(Qt::OtherFocusReason);
+ QLineEdit::mousePressEvent(e);
+}
+
+void HintLineEdit::focusInEvent(QFocusEvent *e)
+{
+ if (debugFilter)
+ qDebug() << Q_FUNC_INFO;
+ if (m_refuseFocus) {
+ // Refuse the focus if the mouse it outside. In addition to the mouse
+ // press logic, this prevents a re-focussing which occurs once
+ // we actually had focus
+ const Qt::FocusReason reason = e->reason();
+ if (reason == Qt::ActiveWindowFocusReason || reason == Qt::PopupFocusReason) {
+ const QPoint mousePos = mapFromGlobal(QCursor::pos());
+ const bool refuse = !geometry().contains(mousePos);
+ if (debugFilter)
+ qDebug() << Q_FUNC_INFO << refuse ;
+ if (refuse) {
+ e->ignore();
+ return;
+ }
+ }
+ }
+
+ QLineEdit::focusInEvent(e);
+}
+
+// ------------------- FilterWidget
+FilterWidget::FilterWidget(QWidget *parent, LayoutMode lm) :
+ QWidget(parent),
+ m_editor(new HintLineEdit(this)),
+ m_button(new IconButton(m_editor)),
+ m_buttonwidth(0)
+{
+ m_editor->setPlaceholderText(tr("Filter"));
+
+ // Let the style determine minimum height for our widget
+ QSize size(ICONBUTTON_SIZE + 6, ICONBUTTON_SIZE + 2);
+
+ // Note KDE does not reserve space for the highlight color
+ if (style()->inherits("OxygenStyle")) {
+ size = size.expandedTo(QSize(24, 0));
+ }
+
+ // Make room for clear icon
+ QMargins margins = m_editor->textMargins();
+ if (layoutDirection() == Qt::LeftToRight)
+ margins.setRight(size.width());
+ else
+ margins.setLeft(size.width());
+
+ m_editor->setTextMargins(margins);
+
+ QHBoxLayout *l = new QHBoxLayout(this);
+ l->setMargin(0);
+ l->setSpacing(0);
+ if (lm == LayoutAlignRight)
+ l->addItem(new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum));
+
+ l->addWidget(m_editor);
+
+ // KDE has custom icons for this. Notice that icon namings are counter intuitive
+ // If these icons are not avaiable we use the freedesktop standard name before
+ // falling back to a bundled resource
+ QIcon icon = QIcon::fromTheme(layoutDirection() == Qt::LeftToRight ?
+ QLatin1String("edit-clear-locationbar-rtl") :
+ QLatin1String("edit-clear-locationbar-ltr"),
+ QIcon::fromTheme("edit-clear", createIconSet(QLatin1String("cleartext.png"))));
+
+ m_button->setIcon(icon);
+ m_button->setToolTip(tr("Clear text"));
+ connect(m_button, SIGNAL(clicked()), this, SLOT(reset()));
+ connect(m_editor, SIGNAL(textChanged(QString)), this, SLOT(checkButton(QString)));
+ connect(m_editor, SIGNAL(textEdited(QString)), this, SIGNAL(filterChanged(QString)));
+}
+
+QString FilterWidget::text() const
+{
+ return m_editor->text();
+}
+
+void FilterWidget::checkButton(const QString &text)
+{
+ if (m_oldText.isEmpty() || text.isEmpty())
+ m_button->animateShow(!m_editor->text().isEmpty());
+ m_oldText = text;
+}
+
+void FilterWidget::reset()
+{
+ if (debugFilter)
+ qDebug() << Q_FUNC_INFO;
+
+ if (!m_editor->text().isEmpty()) {
+ // Editor has lost focus once this is pressed
+ m_editor->clear();
+ emit filterChanged(QString());
+ }
+}
+
+void FilterWidget::resizeEvent(QResizeEvent *)
+{
+ QRect contentRect = m_editor->rect();
+ if (layoutDirection() == Qt::LeftToRight) {
+ const int iconoffset = m_editor->textMargins().right() + 4;
+ m_button->setGeometry(contentRect.adjusted(m_editor->width() - iconoffset, 0, 0, 0));
+ } else {
+ const int iconoffset = m_editor->textMargins().left() + 4;
+ m_button->setGeometry(contentRect.adjusted(0, 0, -m_editor->width() + iconoffset, 0));
+ }
+}
+
+bool FilterWidget::refuseFocus() const
+{
+ return m_editor->refuseFocus();
+}
+
+void FilterWidget::setRefuseFocus(bool v)
+{
+ m_editor->setRefuseFocus(v);
+}
+} // namespace qdesigner_internal
+
+QT_END_NAMESPACE