diff demos/browser/searchlineedit.d @ 45:71b382c10ef6

add coarse and incomplete QT browser port
author mandel
date Sun, 17 May 2009 18:49:59 +0000
parents
children b149ef2cb18b
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demos/browser/searchlineedit.d	Sun May 17 18:49:59 2009 +0000
@@ -0,0 +1,272 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import urllineedit;
+
+import QtGui.QLineEdit;
+import QtGui.QAbstractButton;
+
+import searchlineedit;
+
+import QtGui.QPainter;
+import QtGui.QMouseEvent;
+import QtGui.QMenu;
+import QtGui.QStyle;
+import QtGui.QStyleOptionFrameV2;
+
+/*
+QT_BEGIN_NAMESPACE
+class QMenu;
+QT_END_NAMESPACE
+
+class SearchButton;
+*/
+
+/*
+    Clear button on the right hand side of the search widget.
+    Hidden by default
+    "A circle with an X in it"
+ */
+class ClearButton : public QAbstractButton
+{
+    Q_OBJECT
+
+public:
+    this(QWidget *parent = null)
+{
+	super(parent);
+    setCursor(Qt.ArrowCursor);
+    setToolTip(tr("Clear"));
+    setVisible(false);
+    setFocusPolicy(Qt.NoFocus);
+}
+    void paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+    QPainter painter(this);
+    int height = this.height();
+
+    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);
+}
+
+public slots:
+    void textChanged(QString &text)
+{
+    setVisible(!text.isEmpty());
+}
+
+}
+
+/*
+    Search icon on the left hand side of the search widget
+    When a menu is set a down arrow appears
+ */
+class SearchButton : public QAbstractButton {
+public:
+    SearchButton(QWidget *parent = null)
+{
+	super(parent);
+	m_menu = 0;
+    setObjectName(QLatin1String("SearchButton"));
+    setCursor(Qt.ArrowCursor);
+    setFocusPolicy(Qt.NoFocus);
+}
+
+    void paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+    QPainterPath myPath;
+
+    int radius = (height() / 5) * 2;
+    QRect circle(height() / 3 - 1, height() / 4, radius, radius);
+    myPath.addEllipse(circle);
+
+    myPath.arcMoveTo(circle, 300);
+    QPointF c = myPath.currentPosition();
+    int diff = height() / 7;
+    myPath.lineTo(qMin(width() - 2, (int)c.x() + diff), c.y() + diff);
+
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing, true);
+    painter.setPen(QPen(Qt.darkGray, 2));
+    painter.drawPath(myPath);
+
+    if (m_menu) {
+        QPainterPath dropPath;
+        dropPath.arcMoveTo(circle, 320);
+        QPointF c = dropPath.currentPosition();
+        c = QPointF(c.x() + 3.5, c.y() + 0.5);
+        dropPath.moveTo(c);
+        dropPath.lineTo(c.x() + 4, c.y());
+        dropPath.lineTo(c.x() + 2, c.y() + 2);
+        dropPath.closeSubpath();
+        painter.setPen(Qt.darkGray);
+        painter.setBrush(Qt.darkGray);
+        painter.setRenderHint(QPainter::Antialiasing, false);
+        painter.drawPath(dropPath);
+    }
+    painter.end();
+}
+    QMenu *m_menu;
+
+protected:
+    void mousePressEvent(QMouseEvent *event)
+{
+    if (m_menu && event.button() == Qt.LeftButton) {
+        QWidget *p = parentWidget();
+        if (p) {
+            QPoint r = p.mapToGlobal(QPoint(0, p.height()));
+            m_menu.exec(QPoint(r.x() + height() / 2, r.y()));
+        }
+        event.accept();
+    }
+    QAbstractButton::mousePressEvent(event);
+}
+}
+
+class SearchLineEdit : public ExLineEdit
+{
+    Q_OBJECT
+    Q_PROPERTY(QString inactiveText READ inactiveText WRITE setInactiveText)
+
+signals:
+    void textChanged(QString &text);
+
+public:
+/*
+    SearchLineEdit is an enhanced QLineEdit
+    - A Search icon on the left with optional menu
+    - When there is no text and doesn't have focus an "inactive text" is displayed
+    - When there is text a clear button is displayed on the right hand side
+ */
+this(QWidget *parent = null) : ExLineEdit(parent),
+    m_searchButton(new SearchButton(this))
+{
+    connect(lineEdit(), SIGNAL(textChanged(QString &)),
+            this, SIGNAL(textChanged(QString &)));
+    setLeftWidget(m_searchButton);
+    m_inactiveText = tr("Search");
+
+    QSizePolicy policy = sizePolicy();
+    setSizePolicy(QSizePolicy::Preferred, policy.verticalPolicy());
+}
+
+    QString inactiveText()
+{
+    return m_inactiveText;
+}
+
+    void setInactiveText(QString &text)
+{
+    m_inactiveText = text;
+}
+
+    QMenu *menu()
+{
+    if (!m_searchButton.m_menu) {
+        m_searchButton.m_menu = new QMenu(m_searchButton);
+        if (isVisible())
+            (const_cast<SearchLineEdit*>(this)).updateGeometries();
+    }
+    return m_searchButton.m_menu;
+}
+
+    void setMenu(QMenu *menu)
+{
+    if (m_searchButton.m_menu)
+        m_searchButton.m_menu.deleteLater();
+    m_searchButton.m_menu = menu;
+    updateGeometries();
+}
+
+protected:
+    void resizeEvent(QResizeEvent *event)
+{
+    updateGeometries();
+    ExLineEdit.resizeEvent(event);
+}
+
+    void paintEvent(QPaintEvent *event)
+{
+    if (lineEdit().text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
+        ExLineEdit.paintEvent(event);
+        QStyleOptionFrameV2 panel;
+        initStyleOption(&panel);
+        QRect r = style().subElementRect(QStyle::SE_LineEditContents, &panel, this);
+        QFontMetrics fm = fontMetrics();
+        int horizontalMargin = lineEdit().x();
+        QRect lineRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2,
+                       r.width() - 2 * horizontalMargin, fm.height());
+        QPainter painter(this);
+        painter.setPen(palette().brush(QPalette.Disabled, QPalette.Text).color());
+        painter.drawText(lineRect, Qt.AlignLeft|Qt.AlignVCenter, m_inactiveText);
+    } else {
+        ExLineEdit.paintEvent(event);
+    }
+}
+
+private:
+    void updateGeometries()
+{
+    int menuHeight = height();
+    int menuWidth = menuHeight + 1;
+    if (!m_searchButton.m_menu)
+        menuWidth = (menuHeight / 5) * 4;
+    m_searchButton.resize(QSize(menuWidth, menuHeight));
+}
+
+    SearchButton *m_searchButton;
+    QString m_inactiveText;
+}