Rename the widget browser example demobrowser

The browser example already uses the name demobrowser internally, this
changes the external name to make it easier to refer to explicitly, and
avoid users thinking fancybrowser is the better example.

Change-Id: Ic093eb4881352b5f796bf565df01edb929aba39c
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

1 files changed, 337 insertions, 0 deletions

diff --git a/examples/webenginewidgets/demobrowser/urllineedit.cpp b/examples/webenginewidgets/demobrowser/urllineedit.cpp
new file mode 100644
index 000000000..685277d9c
--- /dev/null
+++ b/examples/webenginewidgets/demobrowser/urllineedit.cpp
@@ -0,0 +1,337 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** 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.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "urllineedit.h"
+
+#include "browserapplication.h"
+#include "searchlineedit.h"
+#include "webview.h"
+
+#include <QtCore/QEvent>
+#include <QtCore/QMimeData>
+
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QCompleter>
+#include <QtGui/QFocusEvent>
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QLabel>
+#include <QtWidgets/QLineEdit>
+#include <QtGui/QDrag>
+#include <QtGui/QPainter>
+#include <QtWidgets/QStyle>
+#include <QtWidgets/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(QString)),
+            m_clearButton, SLOT(textChanged(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);
+}
+
+bool ExLineEdit::event(QEvent *event)
+{
+    if (event->type() == QEvent::ShortcutOverride)
+        return 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);
+}
+
+QVariant ExLineEdit::inputMethodQuery(Qt::InputMethodQuery property) const
+{
+    return m_lineEdit->inputMethodQuery(property);
+}
+
+void ExLineEdit::inputMethodEvent(QInputMethodEvent *e)
+{
+    m_lineEdit->event(e);
+}
+
+
+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(QString::fromUtf8(m_webView->url().toEncoded()));
+        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);
+}
+
+void UrlLineEdit::setWebView(WebView *webView)
+{
+    Q_ASSERT(!m_webView);
+    m_webView = webView;
+    m_iconLabel->m_webView = webView;
+    connect(webView, SIGNAL(urlChanged(QUrl)),
+        this, SLOT(webViewUrlChanged(QUrl)));
+    connect(webView, SIGNAL(iconChanged()),
+        this, SLOT(webViewIconChanged()));
+    connect(webView, SIGNAL(loadProgress(int)),
+        this, SLOT(update()));
+}
+
+void UrlLineEdit::webViewUrlChanged(const QUrl &url)
+{
+    m_lineEdit->setText(QString::fromUtf8(url.toEncoded()));
+    m_lineEdit->setCursorPosition(0);
+}
+
+void UrlLineEdit::webViewIconChanged()
+{
+    Q_ASSERT(m_webView);
+    QPixmap pixmap = m_webView->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(QString::fromUtf8(m_webView->url().toEncoded()));
+    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);
+    }
+}