1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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6 | **
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7 | ** This file is part of the demonstration applications of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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15 | **
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16 | ** GNU Lesser General Public License Usage
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17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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18 | ** General Public License version 2.1 as published by the Free Software
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19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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20 | ** packaging of this file. Please review the following information to
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21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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23 | **
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24 | ** In addition, as a special exception, Nokia gives you certain additional
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25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at qt-info@nokia.com.
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #include "urllineedit.h"
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43 |
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44 | #include "browserapplication.h"
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45 | #include "searchlineedit.h"
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46 | #include "webview.h"
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47 |
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48 | #include <QtCore/QEvent>
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49 |
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50 | #include <QtGui/QApplication>
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51 | #include <QtGui/QCompleter>
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52 | #include <QtGui/QFocusEvent>
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53 | #include <QtGui/QHBoxLayout>
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54 | #include <QtGui/QLabel>
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55 | #include <QtGui/QLineEdit>
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56 | #include <QtGui/QPainter>
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57 | #include <QtGui/QStyle>
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58 | #include <QtGui/QStyleOptionFrameV2>
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59 |
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60 | #include <QtCore/QDebug>
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61 |
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62 | ExLineEdit::ExLineEdit(QWidget *parent)
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63 | : QWidget(parent)
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64 | , m_leftWidget(0)
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65 | , m_lineEdit(new QLineEdit(this))
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66 | , m_clearButton(0)
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67 | {
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68 | setFocusPolicy(m_lineEdit->focusPolicy());
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69 | setAttribute(Qt::WA_InputMethodEnabled);
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70 | setSizePolicy(m_lineEdit->sizePolicy());
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71 | setBackgroundRole(m_lineEdit->backgroundRole());
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72 | setMouseTracking(true);
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73 | setAcceptDrops(true);
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74 | setAttribute(Qt::WA_MacShowFocusRect, true);
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75 | QPalette p = m_lineEdit->palette();
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76 | setPalette(p);
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77 |
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78 | // line edit
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79 | m_lineEdit->setFrame(false);
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80 | m_lineEdit->setFocusProxy(this);
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81 | m_lineEdit->setAttribute(Qt::WA_MacShowFocusRect, false);
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82 | QPalette clearPalette = m_lineEdit->palette();
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83 | clearPalette.setBrush(QPalette::Base, QBrush(Qt::transparent));
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84 | m_lineEdit->setPalette(clearPalette);
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85 |
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86 | // clearButton
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87 | m_clearButton = new ClearButton(this);
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88 | connect(m_clearButton, SIGNAL(clicked()),
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89 | m_lineEdit, SLOT(clear()));
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90 | connect(m_lineEdit, SIGNAL(textChanged(QString)),
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91 | m_clearButton, SLOT(textChanged(QString)));
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92 | }
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93 |
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94 | void ExLineEdit::setLeftWidget(QWidget *widget)
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95 | {
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96 | m_leftWidget = widget;
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97 | }
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98 |
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99 | QWidget *ExLineEdit::leftWidget() const
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100 | {
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101 | return m_leftWidget;
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102 | }
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103 |
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104 | void ExLineEdit::resizeEvent(QResizeEvent *event)
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105 | {
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106 | Q_ASSERT(m_leftWidget);
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107 | updateGeometries();
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108 | QWidget::resizeEvent(event);
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109 | }
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110 |
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111 | void ExLineEdit::updateGeometries()
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112 | {
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113 | QStyleOptionFrameV2 panel;
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114 | initStyleOption(&panel);
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115 | QRect rect = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
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116 |
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117 | int height = rect.height();
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118 | int width = rect.width();
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119 |
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120 | int m_leftWidgetHeight = m_leftWidget->height();
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121 | m_leftWidget->setGeometry(rect.x() + 2, rect.y() + (height - m_leftWidgetHeight)/2,
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122 | m_leftWidget->width(), m_leftWidget->height());
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123 |
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124 | int clearButtonWidth = this->height();
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125 | m_lineEdit->setGeometry(m_leftWidget->x() + m_leftWidget->width(), 0,
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126 | width - clearButtonWidth - m_leftWidget->width(), this->height());
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127 |
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128 | m_clearButton->setGeometry(this->width() - clearButtonWidth, 0,
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129 | clearButtonWidth, this->height());
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130 | }
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131 |
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132 | void ExLineEdit::initStyleOption(QStyleOptionFrameV2 *option) const
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133 | {
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134 | option->initFrom(this);
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135 | option->rect = contentsRect();
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136 | option->lineWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth, option, this);
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137 | option->midLineWidth = 0;
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138 | option->state |= QStyle::State_Sunken;
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139 | if (m_lineEdit->isReadOnly())
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140 | option->state |= QStyle::State_ReadOnly;
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141 | #ifdef QT_KEYPAD_NAVIGATION
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142 | if (hasEditFocus())
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143 | option->state |= QStyle::State_HasEditFocus;
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144 | #endif
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145 | option->features = QStyleOptionFrameV2::None;
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146 | }
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147 |
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148 | QSize ExLineEdit::sizeHint() const
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149 | {
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150 | m_lineEdit->setFrame(true);
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151 | QSize size = m_lineEdit->sizeHint();
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152 | m_lineEdit->setFrame(false);
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153 | return size;
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154 | }
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155 |
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156 | void ExLineEdit::focusInEvent(QFocusEvent *event)
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157 | {
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158 | m_lineEdit->event(event);
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159 | QWidget::focusInEvent(event);
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160 | }
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161 |
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162 | void ExLineEdit::focusOutEvent(QFocusEvent *event)
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163 | {
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164 | m_lineEdit->event(event);
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165 |
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166 | if (m_lineEdit->completer()) {
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167 | connect(m_lineEdit->completer(), SIGNAL(activated(QString)),
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168 | m_lineEdit, SLOT(setText(QString)));
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169 | connect(m_lineEdit->completer(), SIGNAL(highlighted(QString)),
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170 | m_lineEdit, SLOT(_q_completionHighlighted(QString)));
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171 | }
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172 | QWidget::focusOutEvent(event);
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173 | }
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174 |
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175 | void ExLineEdit::keyPressEvent(QKeyEvent *event)
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176 | {
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177 | m_lineEdit->event(event);
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178 | }
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179 |
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180 | bool ExLineEdit::event(QEvent *event)
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181 | {
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182 | if (event->type() == QEvent::ShortcutOverride)
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183 | return m_lineEdit->event(event);
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184 | return QWidget::event(event);
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185 | }
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186 |
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187 | void ExLineEdit::paintEvent(QPaintEvent *)
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188 | {
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189 | QPainter p(this);
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190 | QStyleOptionFrameV2 panel;
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191 | initStyleOption(&panel);
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192 | style()->drawPrimitive(QStyle::PE_PanelLineEdit, &panel, &p, this);
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193 | }
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194 |
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195 | QVariant ExLineEdit::inputMethodQuery(Qt::InputMethodQuery property) const
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196 | {
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197 | return m_lineEdit->inputMethodQuery(property);
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198 | }
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199 |
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200 | void ExLineEdit::inputMethodEvent(QInputMethodEvent *e)
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201 | {
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202 | m_lineEdit->event(e);
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203 | }
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204 |
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205 |
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206 | class UrlIconLabel : public QLabel
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207 | {
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208 |
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209 | public:
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210 | UrlIconLabel(QWidget *parent);
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211 |
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212 | WebView *m_webView;
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213 |
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214 | protected:
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215 | void mousePressEvent(QMouseEvent *event);
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216 | void mouseMoveEvent(QMouseEvent *event);
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217 |
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218 | private:
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219 | QPoint m_dragStartPos;
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220 |
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221 | };
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222 |
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223 | UrlIconLabel::UrlIconLabel(QWidget *parent)
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224 | : QLabel(parent)
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225 | , m_webView(0)
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226 | {
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227 | setMinimumWidth(16);
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228 | setMinimumHeight(16);
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229 | }
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230 |
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231 | void UrlIconLabel::mousePressEvent(QMouseEvent *event)
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232 | {
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233 | if (event->button() == Qt::LeftButton)
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234 | m_dragStartPos = event->pos();
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235 | QLabel::mousePressEvent(event);
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236 | }
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237 |
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238 | void UrlIconLabel::mouseMoveEvent(QMouseEvent *event)
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239 | {
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240 | if (event->buttons() == Qt::LeftButton
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241 | && (event->pos() - m_dragStartPos).manhattanLength() > QApplication::startDragDistance()
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242 | && m_webView) {
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243 | QDrag *drag = new QDrag(this);
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244 | QMimeData *mimeData = new QMimeData;
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245 | mimeData->setText(QString::fromUtf8(m_webView->url().toEncoded()));
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246 | QList<QUrl> urls;
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247 | urls.append(m_webView->url());
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248 | mimeData->setUrls(urls);
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249 | drag->setMimeData(mimeData);
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250 | drag->exec();
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251 | }
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252 | }
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253 |
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254 | UrlLineEdit::UrlLineEdit(QWidget *parent)
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255 | : ExLineEdit(parent)
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256 | , m_webView(0)
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257 | , m_iconLabel(0)
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258 | {
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259 | // icon
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260 | m_iconLabel = new UrlIconLabel(this);
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261 | m_iconLabel->resize(16, 16);
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262 | setLeftWidget(m_iconLabel);
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263 | m_defaultBaseColor = palette().color(QPalette::Base);
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264 |
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265 | webViewIconChanged();
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266 | }
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267 |
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268 | void UrlLineEdit::setWebView(WebView *webView)
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269 | {
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270 | Q_ASSERT(!m_webView);
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271 | m_webView = webView;
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272 | m_iconLabel->m_webView = webView;
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273 | connect(webView, SIGNAL(urlChanged(QUrl)),
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274 | this, SLOT(webViewUrlChanged(QUrl)));
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275 | connect(webView, SIGNAL(loadFinished(bool)),
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276 | this, SLOT(webViewIconChanged()));
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277 | connect(webView, SIGNAL(iconChanged()),
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278 | this, SLOT(webViewIconChanged()));
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279 | connect(webView, SIGNAL(loadProgress(int)),
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280 | this, SLOT(update()));
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281 | }
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282 |
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283 | void UrlLineEdit::webViewUrlChanged(const QUrl &url)
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284 | {
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285 | m_lineEdit->setText(QString::fromUtf8(url.toEncoded()));
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286 | m_lineEdit->setCursorPosition(0);
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287 | }
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288 |
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289 | void UrlLineEdit::webViewIconChanged()
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290 | {
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291 | QUrl url = (m_webView) ? m_webView->url() : QUrl();
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292 | QIcon icon = BrowserApplication::instance()->icon(url);
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293 | QPixmap pixmap(icon.pixmap(16, 16));
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294 | m_iconLabel->setPixmap(pixmap);
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295 | }
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296 |
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297 | QLinearGradient UrlLineEdit::generateGradient(const QColor &color) const
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298 | {
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299 | QLinearGradient gradient(0, 0, 0, height());
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300 | gradient.setColorAt(0, m_defaultBaseColor);
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301 | gradient.setColorAt(0.15, color.lighter(120));
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302 | gradient.setColorAt(0.5, color);
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303 | gradient.setColorAt(0.85, color.lighter(120));
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304 | gradient.setColorAt(1, m_defaultBaseColor);
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305 | return gradient;
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306 | }
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307 |
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308 | void UrlLineEdit::focusOutEvent(QFocusEvent *event)
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309 | {
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310 | if (m_lineEdit->text().isEmpty() && m_webView)
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311 | m_lineEdit->setText(QString::fromUtf8(m_webView->url().toEncoded()));
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312 | ExLineEdit::focusOutEvent(event);
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313 | }
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314 |
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315 | void UrlLineEdit::paintEvent(QPaintEvent *event)
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316 | {
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317 | QPalette p = palette();
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318 | if (m_webView && m_webView->url().scheme() == QLatin1String("https")) {
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319 | QColor lightYellow(248, 248, 210);
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320 | p.setBrush(QPalette::Base, generateGradient(lightYellow));
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321 | } else {
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322 | p.setBrush(QPalette::Base, m_defaultBaseColor);
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323 | }
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324 | setPalette(p);
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325 | ExLineEdit::paintEvent(event);
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326 |
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327 | QPainter painter(this);
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328 | QStyleOptionFrameV2 panel;
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329 | initStyleOption(&panel);
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330 | QRect backgroundRect = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
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331 | if (m_webView && !hasFocus()) {
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332 | int progress = m_webView->progress();
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333 | QColor loadingColor = QColor(116, 192, 250);
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334 | painter.setBrush(generateGradient(loadingColor));
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335 | painter.setPen(Qt::transparent);
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336 | int mid = backgroundRect.width() / 100 * progress;
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337 | QRect progressRect(backgroundRect.x(), backgroundRect.y(), mid, backgroundRect.height());
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338 | painter.drawRect(progressRect);
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339 | }
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340 | }
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