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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Qt Software Information (qt-info@nokia.com)
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5 **
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6 ** This file is part of the demonstration applications of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial Usage
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10 ** Licensees holding valid Qt Commercial licenses may use this file in
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11 ** accordance with the Qt Commercial License Agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and Nokia.
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14 **
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15 ** GNU Lesser General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 ** General Public License version 2.1 as published by the Free Software
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 ** packaging of this file. Please review the following information to
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 **
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23 ** In addition, as a special exception, Nokia gives you certain
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24 ** additional rights. These rights are described in the Nokia Qt LGPL
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 ** 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 are unsure which license is appropriate for your use, please
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37 ** contact the sales department at qt-sales@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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72
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42 module searchlineedit;
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43
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45
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44 import urllineedit;
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45
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72
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46 import qt.gui.QLineEdit;
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47 import qt.gui.QAbstractButton;
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48 import qt.gui.QPainter;
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49 import qt.gui.QMouseEvent;
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50 import qt.gui.QMenu;
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51 import qt.gui.QStyle;
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52 import qt.gui.QStyleOptionFrameV2;
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45
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53
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54 /*
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55 QT_BEGIN_NAMESPACE
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56 class QMenu;
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57 QT_END_NAMESPACE
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58
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59 class SearchButton;
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60 */
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61
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62 /*
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63 Clear button on the right hand side of the search widget.
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64 Hidden by default
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65 "A circle with an X in it"
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66 */
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67 class ClearButton : public QAbstractButton
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68 {
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72
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69 public:
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45
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70
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72
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71 this(QWidget parent = null)
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72 {
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73 super(parent);
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74 setCursor(Qt.ArrowCursor);
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75 setToolTip(tr("Clear"));
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76 setVisible(false);
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77 setFocusPolicy(Qt.NoFocus);
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78 }
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79
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80 void paintEvent(QPaintEvent *event)
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81 {
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82 //Q_UNUSED(event);
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83 QPainter painter(this);
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84 int height = this.height();
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45
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85
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72
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86 painter.setRenderHint(QPainter.Antialiasing, true);
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87 QColor color = palette().color(QPalette.Mid);
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88 painter.setBrush(isDown() ? palette().color(QPalette.Dark) : palette().color(QPalette.Mid));
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89 painter.setPen(painter.brush().color());
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90 int size = width();
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91 int offset = size / 5;
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92 int radius = size - offset * 2;
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93 painter.drawEllipse(offset, offset, radius, radius);
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94
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95 painter.setPen(palette().color(QPalette.Base));
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96 int border = offset * 2;
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97 painter.drawLine(border, border, width() - border, height - border);
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98 painter.drawLine(border, height - border, width() - border, border);
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99 }
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45
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100
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72
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101 void textChanged(QString &text)
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102 {
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103 setVisible(!text.isEmpty());
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104 }
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45
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105 }
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106
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107 /*
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108 Search icon on the left hand side of the search widget
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109 When a menu is set a down arrow appears
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110 */
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111 class SearchButton : public QAbstractButton {
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72
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112
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45
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113 public:
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114
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115 SearchButton(QWidget parent = null)
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116 {
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117 super(parent);
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118 m_menu = 0;
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119 setObjectName(QLatin1String("SearchButton"));
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120 setCursor(Qt.ArrowCursor);
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121 setFocusPolicy(Qt.NoFocus);
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122 }
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123
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72
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124 void paintEvent(QPaintEvent event)
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125 {
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126 //Q_UNUSED(event);
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127 QPainterPath myPath;
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128
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129 int radius = (height() / 5) * 2;
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130 QRect circle(height() / 3 - 1, height() / 4, radius, radius);
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131 myPath.addEllipse(circle);
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132
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133 myPath.arcMoveTo(circle, 300);
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134 QPointF c = myPath.currentPosition();
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135 int diff = height() / 7;
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136 myPath.lineTo(qMin(width() - 2, (int)c.x() + diff), c.y() + diff);
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45
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137
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138 QPainter painter(this);
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139 painter.setRenderHint(QPainter.Antialiasing, true);
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140 painter.setPen(QPen(Qt.darkGray, 2));
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141 painter.drawPath(myPath);
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45
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142
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72
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143 if (m_menu) {
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144 QPainterPath dropPath;
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145 dropPath.arcMoveTo(circle, 320);
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146 QPointF c = dropPath.currentPosition();
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147 c = QPointF(c.x() + 3.5, c.y() + 0.5);
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148 dropPath.moveTo(c);
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149 dropPath.lineTo(c.x() + 4, c.y());
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150 dropPath.lineTo(c.x() + 2, c.y() + 2);
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151 dropPath.closeSubpath();
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152 painter.setPen(Qt.darkGray);
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153 painter.setBrush(Qt.darkGray);
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154 painter.setRenderHint(QPainter.Antialiasing, false);
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155 painter.drawPath(dropPath);
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156 }
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157 painter.end();
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158 }
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159
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160 QMenu m_menu;
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45
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161
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162 protected:
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72
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163 void mousePressEvent(QMouseEvent event)
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164 {
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165 if (m_menu && event.button() == Qt.LeftButton) {
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166 QWidget p = parentWidget();
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167 if (p) {
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168 QPoint r = p.mapToGlobal(QPoint(0, p.height()));
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169 m_menu.exec(QPoint(r.x() + height() / 2, r.y()));
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170 }
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171 event.accept();
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172 }
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173 QAbstractButton.mousePressEvent(event);
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174 }
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45
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175 }
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176
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177 class SearchLineEdit : public ExLineEdit
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178 {
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72
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179 //Q_PROPERTY(QString inactiveText READ inactiveText WRITE setInactiveText)
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45
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180
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72
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181 mixin Signal!("textChanged", QString &text);
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45
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182
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183 public:
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184 /*
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185 SearchLineEdit is an enhanced QLineEdit
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186 - A Search icon on the left with optional menu
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187 - When there is no text and doesn't have focus an "inactive text" is displayed
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188 - When there is text a clear button is displayed on the right hand side
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189 */
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72
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190 this(QWidget parent = null) : ExLineEdit(parent)
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191 {
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192 m_searchButton = new SearchButton(this);
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193 lineEdit.textChanged.connect(&this.textChanged);
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194 setLeftWidget(m_searchButton);
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195 m_inactiveText = tr("Search");
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196
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197 QSizePolicy policy = sizePolicy();
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198 setSizePolicy(QSizePolicy.Preferred, policy.verticalPolicy());
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199 }
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200
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72
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201 QString inactiveText()
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202 {
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203 return m_inactiveText;
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204 }
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205
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72
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206 void setInactiveText(QString &text)
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207 {
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208 m_inactiveText = text;
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209 }
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210
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211 QMenu menu()
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212 {
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213 if (!m_searchButton.m_menu) {
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214 m_searchButton.m_menu = new QMenu(m_searchButton);
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215 if (isVisible())
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216 (const_cast<SearchLineEdit>(this)).updateGeometries();
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217 }
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218 return m_searchButton.m_menu;
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219 }
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220
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72
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221 void setMenu(QMenu menu)
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222 {
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223 if (m_searchButton.m_menu)
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224 m_searchButton.m_menu.deleteLater();
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225 m_searchButton.m_menu = menu;
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226 updateGeometries();
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227 }
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228
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229 protected:
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72
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230 void resizeEvent(QResizeEvent event)
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231 {
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232 updateGeometries();
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233 ExLineEdit.resizeEvent(event);
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234 }
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235
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72
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236 void paintEvent(QPaintEvent event)
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237 {
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238 if (lineEdit().text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
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239 ExLineEdit.paintEvent(event);
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240 QStyleOptionFrameV2 panel;
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241 initStyleOption(&panel);
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242 QRect r = style().subElementRect(QStyle.SE_LineEditContents, &panel, this);
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243 QFontMetrics fm = fontMetrics();
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244 int horizontalMargin = lineEdit().x();
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245 QRect lineRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2, r.width() - 2 * horizontalMargin, fm.height());
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246 QPainter painter(this);
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247 painter.setPen(palette().brush(QPalette.Disabled, QPalette.Text).color());
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248 painter.drawText(lineRect, Qt.AlignLeft|Qt.AlignVCenter, m_inactiveText);
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249 } else {
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250 ExLineEdit.paintEvent(event);
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251 }
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252 }
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253
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254 private:
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72
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255
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256 void updateGeometries()
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257 {
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258 int menuHeight = height();
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259 int menuWidth = menuHeight + 1;
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260 if (!m_searchButton.m_menu)
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261 menuWidth = (menuHeight / 5) * 4;
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262 m_searchButton.resize(QSize(menuWidth, menuHeight));
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263 }
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264
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265 SearchButton m_searchButton;
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266 QString m_inactiveText;
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45
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267 }
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