urllineedit.cpp
资源名称:browser.rar [点击查看]
上传用户:huahtool
上传日期:2015-12-10
资源大小:1089k
文件大小:10k
源码类别:
浏览器
开发平台:
Visual C++
- /****************************************************************************
- **
- ** Copyright (C) 2008 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.
- **
- ** 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 General Public License Usage
- ** Alternatively, 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 file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, 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.
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- ****************************************************************************/
- #include "urllineedit.h"
- #include "browserapplication.h"
- #include "searchlineedit.h"
- #include "webview.h"
- #include <QtCore/QEvent>
- #include <QtGui/QApplication>
- #include <QtGui/QCompleter>
- #include <QtGui/QFocusEvent>
- #include <QtGui/QHBoxLayout>
- #include <QtGui/QLabel>
- #include <QtGui/QLineEdit>
- #include <QtGui/QPainter>
- #include <QtGui/QStyle>
- #include <QtGui/QStyleOptionFrameV2>
- #include <QtCore/QDebug>
- ExLineEdit::ExLineEdit(QWidget *parent)
- : QWidget(parent)
- , m_leftWidget(0)
- , m_lineEdit(new QLineEdit(this))
- , m_clearButton(0)
- {
- setFocusPolicy(m_lineEdit->focusPolicy());
- setAttribute(Qt::WA_InputMethodEnabled);
- setSizePolicy(m_lineEdit->sizePolicy());
- setBackgroundRole(m_lineEdit->backgroundRole());
- setMouseTracking(true);
- setAcceptDrops(true);
- setAttribute(Qt::WA_MacShowFocusRect, true);
- QPalette p = m_lineEdit->palette();
- setPalette(p);
- // line edit
- m_lineEdit->setFrame(false);
- m_lineEdit->setFocusProxy(this);
- m_lineEdit->setAttribute(Qt::WA_MacShowFocusRect, false);
- QPalette clearPalette = m_lineEdit->palette();
- clearPalette.setBrush(QPalette::Base, QBrush(Qt::transparent));
- m_lineEdit->setPalette(clearPalette);
- // clearButton
- m_clearButton = new ClearButton(this);
- connect(m_clearButton, SIGNAL(clicked()),
- m_lineEdit, SLOT(clear()));
- connect(m_lineEdit, SIGNAL(textChanged(const QString&)),
- m_clearButton, SLOT(textChanged(const QString&)));
- }
- void ExLineEdit::setLeftWidget(QWidget *widget)
- {
- m_leftWidget = widget;
- }
- QWidget *ExLineEdit::leftWidget() const
- {
- return m_leftWidget;
- }
- void ExLineEdit::resizeEvent(QResizeEvent *event)
- {
- Q_ASSERT(m_leftWidget);
- updateGeometries();
- QWidget::resizeEvent(event);
- }
- void ExLineEdit::updateGeometries()
- {
- QStyleOptionFrameV2 panel;
- initStyleOption(&panel);
- QRect rect = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
- int height = rect.height();
- int width = rect.width();
- int m_leftWidgetHeight = m_leftWidget->height();
- m_leftWidget->setGeometry(rect.x() + 2, rect.y() + (height - m_leftWidgetHeight)/2,
- m_leftWidget->width(), m_leftWidget->height());
- int clearButtonWidth = this->height();
- m_lineEdit->setGeometry(m_leftWidget->x() + m_leftWidget->width(), 0,
- width - clearButtonWidth - m_leftWidget->width(), this->height());
- m_clearButton->setGeometry(this->width() - clearButtonWidth, 0,
- clearButtonWidth, this->height());
- }
- void ExLineEdit::initStyleOption(QStyleOptionFrameV2 *option) const
- {
- option->initFrom(this);
- option->rect = contentsRect();
- option->lineWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth, option, this);
- option->midLineWidth = 0;
- option->state |= QStyle::State_Sunken;
- if (m_lineEdit->isReadOnly())
- option->state |= QStyle::State_ReadOnly;
- #ifdef QT_KEYPAD_NAVIGATION
- if (hasEditFocus())
- option->state |= QStyle::State_HasEditFocus;
- #endif
- option->features = QStyleOptionFrameV2::None;
- }
- QSize ExLineEdit::sizeHint() const
- {
- m_lineEdit->setFrame(true);
- QSize size = m_lineEdit->sizeHint();
- m_lineEdit->setFrame(false);
- return size;
- }
- void ExLineEdit::focusInEvent(QFocusEvent *event)
- {
- m_lineEdit->event(event);
- QWidget::focusInEvent(event);
- }
- void ExLineEdit::focusOutEvent(QFocusEvent *event)
- {
- m_lineEdit->event(event);
- if (m_lineEdit->completer()) {
- connect(m_lineEdit->completer(), SIGNAL(activated(QString)),
- m_lineEdit, SLOT(setText(QString)));
- connect(m_lineEdit->completer(), SIGNAL(highlighted(QString)),
- m_lineEdit, SLOT(_q_completionHighlighted(QString)));
- }
- QWidget::focusOutEvent(event);
- }
- void ExLineEdit::keyPressEvent(QKeyEvent *event)
- {
- m_lineEdit->event(event);
- QWidget::keyPressEvent(event);
- }
- bool ExLineEdit::event(QEvent *event)
- {
- if (event->type() == QEvent::ShortcutOverride)
- m_lineEdit->event(event);
- return QWidget::event(event);
- }
- void ExLineEdit::paintEvent(QPaintEvent *)
- {
- QPainter p(this);
- QStyleOptionFrameV2 panel;
- initStyleOption(&panel);
- style()->drawPrimitive(QStyle::PE_PanelLineEdit, &panel, &p, this);
- }
- class UrlIconLabel : public QLabel
- {
- public:
- UrlIconLabel(QWidget *parent);
- WebView *m_webView;
- protected:
- void mousePressEvent(QMouseEvent *event);
- void mouseMoveEvent(QMouseEvent *event);
- private:
- QPoint m_dragStartPos;
- };
- UrlIconLabel::UrlIconLabel(QWidget *parent)
- : QLabel(parent)
- , m_webView(0)
- {
- setMinimumWidth(16);
- setMinimumHeight(16);
- }
- void UrlIconLabel::mousePressEvent(QMouseEvent *event)
- {
- if (event->button() == Qt::LeftButton)
- m_dragStartPos = event->pos();
- QLabel::mousePressEvent(event);
- }
- void UrlIconLabel::mouseMoveEvent(QMouseEvent *event)
- {
- if (event->buttons() == Qt::LeftButton
- && (event->pos() - m_dragStartPos).manhattanLength() > QApplication::startDragDistance()
- && m_webView) {
- QDrag *drag = new QDrag(this);
- QMimeData *mimeData = new QMimeData;
- mimeData->setText(m_webView->url().toString());
- QList<QUrl> urls;
- urls.append(m_webView->url());
- mimeData->setUrls(urls);
- drag->setMimeData(mimeData);
- drag->exec();
- }
- }
- UrlLineEdit::UrlLineEdit(QWidget *parent)
- : ExLineEdit(parent)
- , m_webView(0)
- , m_iconLabel(0)
- {
- // icon
- m_iconLabel = new UrlIconLabel(this);
- m_iconLabel->resize(16, 16);
- setLeftWidget(m_iconLabel);
- m_defaultBaseColor = palette().color(QPalette::Base);
- webViewIconChanged();
- }
- void UrlLineEdit::setWebView(WebView *webView)
- {
- Q_ASSERT(!m_webView);
- m_webView = webView;
- m_iconLabel->m_webView = webView;
- connect(webView, SIGNAL(urlChanged(const QUrl &)),
- this, SLOT(webViewUrlChanged(const QUrl &)));
- connect(webView, SIGNAL(loadFinished(bool)),
- this, SLOT(webViewIconChanged()));
- connect(webView, SIGNAL(iconChanged()),
- this, SLOT(webViewIconChanged()));
- connect(webView, SIGNAL(loadProgress(int)),
- this, SLOT(update()));
- }
- void UrlLineEdit::webViewUrlChanged(const QUrl &url)
- {
- m_lineEdit->setText(url.toString());
- m_lineEdit->setCursorPosition(0);
- }
- void UrlLineEdit::webViewIconChanged()
- {
- QUrl url = (m_webView) ? m_webView->url() : QUrl();
- QIcon icon = BrowserApplication::instance()->icon(url);
- QPixmap pixmap(icon.pixmap(16, 16));
- m_iconLabel->setPixmap(pixmap);
- }
- QLinearGradient UrlLineEdit::generateGradient(const QColor &color) const
- {
- QLinearGradient gradient(0, 0, 0, height());
- gradient.setColorAt(0, m_defaultBaseColor);
- gradient.setColorAt(0.15, color.lighter(120));
- gradient.setColorAt(0.5, color);
- gradient.setColorAt(0.85, color.lighter(120));
- gradient.setColorAt(1, m_defaultBaseColor);
- return gradient;
- }
- void UrlLineEdit::focusOutEvent(QFocusEvent *event)
- {
- if (m_lineEdit->text().isEmpty() && m_webView)
- m_lineEdit->setText(m_webView->url().toString());
- ExLineEdit::focusOutEvent(event);
- }
- void UrlLineEdit::paintEvent(QPaintEvent *event)
- {
- QPalette p = palette();
- if (m_webView && m_webView->url().scheme() == QLatin1String("https")) {
- QColor lightYellow(248, 248, 210);
- p.setBrush(QPalette::Base, generateGradient(lightYellow));
- } else {
- p.setBrush(QPalette::Base, m_defaultBaseColor);
- }
- setPalette(p);
- ExLineEdit::paintEvent(event);
- QPainter painter(this);
- QStyleOptionFrameV2 panel;
- initStyleOption(&panel);
- QRect backgroundRect = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
- if (m_webView && !hasFocus()) {
- int progress = m_webView->progress();
- QColor loadingColor = QColor(116, 192, 250);
- painter.setBrush(generateGradient(loadingColor));
- painter.setPen(Qt::transparent);
- int mid = backgroundRect.width() / 100 * progress;
- QRect progressRect(backgroundRect.x(), backgroundRect.y(), mid, backgroundRect.height());
- painter.drawRect(progressRect);
- }
- }