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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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73
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44
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45
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45 import urllineedit;
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46
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72
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47 import qt.gui.QLineEdit;
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48 import qt.gui.QAbstractButton;
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49 import qt.gui.QPainter;
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50 import qt.gui.QMouseEvent;
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51 import qt.gui.QMenu;
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52 import qt.gui.QStyle;
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53 import qt.gui.QStyleOptionFrameV2;
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45
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54
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55
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56 /*
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73
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57 Clear button on the right hand side of the search widget.
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58 Hidden by default
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59 "A circle with an X in it"
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60 */
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45
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61 class ClearButton : public QAbstractButton
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62 {
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72
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63 public:
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45
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64
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72
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65 this(QWidget parent = null)
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66 {
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67 super(parent);
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68 setCursor(Qt.ArrowCursor);
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69 setToolTip(tr("Clear"));
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70 setVisible(false);
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71 setFocusPolicy(Qt.NoFocus);
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72 }
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73
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74
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74 void paintEvent(QPaintEvent event)
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72
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75 {
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77
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76 auto painter = new QPainter(this);
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72
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77 int height = this.height();
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45
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78
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72
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79 painter.setRenderHint(QPainter.Antialiasing, true);
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80 QColor color = palette().color(QPalette.Mid);
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81 painter.setBrush(isDown() ? palette().color(QPalette.Dark) : palette().color(QPalette.Mid));
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82 painter.setPen(painter.brush().color());
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83 int size = width();
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84 int offset = size / 5;
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85 int radius = size - offset * 2;
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86 painter.drawEllipse(offset, offset, radius, radius);
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87
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88 painter.setPen(palette().color(QPalette.Base));
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89 int border = offset * 2;
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90 painter.drawLine(border, border, width() - border, height - border);
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91 painter.drawLine(border, height - border, width() - border, border);
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92 }
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45
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93
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77
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94 void textChanged(string text)
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95 {
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96 setVisible(!text.isEmpty());
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97 }
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45
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98 }
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99
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100 /*
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101 Search icon on the left hand side of the search widget
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102 When a menu is set a down arrow appears
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103 */
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73
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104 class SearchButton : public QAbstractButton
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105 {
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45
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106 public:
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107
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77
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108 this(QWidget parent = null)
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72
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109 {
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110 super(parent);
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111 m_menu = 0;
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112 setObjectName(QLatin1String("SearchButton"));
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113 setCursor(Qt.ArrowCursor);
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114 setFocusPolicy(Qt.NoFocus);
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115 }
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45
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116
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72
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117 void paintEvent(QPaintEvent event)
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118 {
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119 QPainterPath myPath;
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120
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121 int radius = (height() / 5) * 2;
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122 QRect circle = QRect(height() / 3 - 1, height() / 4, radius, radius);
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123 myPath.addEllipse(circle);
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124
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125 myPath.arcMoveTo(circle, 300);
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126 QPointF c = myPath.currentPosition();
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127 int diff = height() / 7;
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128 myPath.lineTo(qMin(width() - 2, cast(int) c.x() + diff), c.y() + diff);
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129
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130 auto painter = new QPainter(this);
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131 painter.setRenderHint(QPainter.Antialiasing, true);
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132 painter.setPen(QPen(Qt.darkGray, 2));
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133 painter.drawPath(myPath);
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45
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134
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135 if (m_menu) {
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136 QPainterPath dropPath;
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137 dropPath.arcMoveTo(circle, 320);
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138 QPointF c = dropPath.currentPosition();
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139 c = QPointF(c.x() + 3.5, c.y() + 0.5);
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140 dropPath.moveTo(c);
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141 dropPath.lineTo(c.x() + 4, c.y());
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142 dropPath.lineTo(c.x() + 2, c.y() + 2);
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143 dropPath.closeSubpath();
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144 painter.setPen(Qt.darkGray);
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145 painter.setBrush(Qt.darkGray);
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146 painter.setRenderHint(QPainter.Antialiasing, false);
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147 painter.drawPath(dropPath);
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148 }
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149 painter.end();
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150 }
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151
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152 QMenu m_menu;
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45
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153
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154 protected:
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155
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156 void mousePressEvent(QMouseEvent event)
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157 {
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158 if (m_menu && event.button() == Qt.LeftButton) {
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159 QWidget p = parentWidget();
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160 if (p) {
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161 QPoint r = p.mapToGlobal(QPoint(0, p.height()));
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162 m_menu.exec(QPoint(r.x() + height() / 2, r.y()));
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163 }
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164 event.accept();
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165 }
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166 QAbstractButton.mousePressEvent(event);
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167 }
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45
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168 }
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169
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170 class SearchLineEdit : public ExLineEdit
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171 {
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77
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172 mixin Signal!("textChanged", string /*text*/);
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45
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173
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174 public:
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73
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175
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176 /*
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177 SearchLineEdit is an enhanced QLineEdit
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178 - A Search icon on the left with optional menu
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179 - When there is no text and doesn't have focus an "inactive text" is displayed
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180 - When there is text a clear button is displayed on the right hand side
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181 */
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74
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182 this(QWidget parent = null)
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72
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183 {
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74
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184 super(parent);
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185 m_searchButton = new SearchButton(this);
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186 lineEdit.textChanged.connect(&this.textChanged);
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187 setLeftWidget(m_searchButton);
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188 m_inactiveText = tr("Search");
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45
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189
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190 QSizePolicy policy = sizePolicy();
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191 setSizePolicy(QSizePolicy.Preferred, policy.verticalPolicy());
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192 }
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193
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77
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194 string inactiveText()
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195 {
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196 return m_inactiveText;
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197 }
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198
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77
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199 void setInactiveText(string text)
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72
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200 {
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201 m_inactiveText = text;
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202 }
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203
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204 QMenu menu()
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205 {
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206 if (!m_searchButton.m_menu) {
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207 m_searchButton.m_menu = new QMenu(m_searchButton);
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208 if (isVisible())
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209 (cast(SearchLineEdit) this).updateGeometries();
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72
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210 }
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211 return m_searchButton.m_menu;
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212 }
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213
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72
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214 void setMenu(QMenu menu)
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215 {
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216 if (m_searchButton.m_menu)
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217 m_searchButton.m_menu.deleteLater();
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218 m_searchButton.m_menu = menu;
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219 updateGeometries();
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220 }
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221
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222 protected:
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223
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224 void resizeEvent(QResizeEvent event)
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225 {
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226 updateGeometries();
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227 ExLineEdit.resizeEvent(event);
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228 }
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229
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230 void paintEvent(QPaintEvent event)
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231 {
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232 if (lineEdit().text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
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233 ExLineEdit.paintEvent(event);
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234 QStyleOptionFrameV2 panel;
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235 initStyleOption(&panel);
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236 QRect r = style().subElementRect(QStyle.SE_LineEditContents, &panel, this);
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237 QFontMetrics fm = fontMetrics();
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238 int horizontalMargin = lineEdit().x();
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77
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239 QRect lineRect = QRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2, r.width() - 2 * horizontalMargin, fm.height());
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240 QPainter painter = new QPainter(this);
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241 painter.setPen(palette().brush(QPalette.Disabled, QPalette.Text).color());
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242 painter.drawText(lineRect, Qt.AlignLeft|Qt.AlignVCenter, m_inactiveText);
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243 } else {
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244 ExLineEdit.paintEvent(event);
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245 }
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246 }
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247
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248 private:
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249
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250 void updateGeometries()
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251 {
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252 int menuHeight = height();
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253 int menuWidth = menuHeight + 1;
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254 if (!m_searchButton.m_menu)
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255 menuWidth = (menuHeight / 5) * 4;
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256 m_searchButton.resize(QSize(menuWidth, menuHeight));
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257 }
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258
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259 SearchButton m_searchButton;
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260 string m_inactiveText;
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261 }
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