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comparison demos/browser/searchlineedit.d @ 45:71b382c10ef6

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add coarse and incomplete QT browser port
author mandel
date Sun, 17 May 2009 18:49:59 +0000
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children b149ef2cb18b
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44:3cb15c92ac28 45:71b382c10ef6
1 /****************************************************************************
2 **
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: Qt Software Information (qt-info@nokia.com)
5 **
6 ** This file is part of the demonstration applications of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial Usage
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Nokia.
14 **
15 ** GNU Lesser General Public License Usage
16 ** Alternatively, this file may be used under the terms of the GNU Lesser
17 ** General Public License version 2.1 as published by the Free Software
18 ** Foundation and appearing in the file LICENSE.LGPL included in the
19 ** packaging of this file. Please review the following information to
20 ** ensure the GNU Lesser General Public License version 2.1 requirements
21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22 **
23 ** In addition, as a special exception, Nokia gives you certain
24 ** additional rights. These rights are described in the Nokia Qt LGPL
25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26 ** package.
27 **
28 ** GNU General Public License Usage
29 ** Alternatively, this file may be used under the terms of the GNU
30 ** General Public License version 3.0 as published by the Free Software
31 ** Foundation and appearing in the file LICENSE.GPL included in the
32 ** packaging of this file. Please review the following information to
33 ** ensure the GNU General Public License version 3.0 requirements will be
34 ** met: http://www.gnu.org/copyleft/gpl.html.
35 **
36 ** If you are unsure which license is appropriate for your use, please
37 ** contact the sales department at qt-sales@nokia.com.
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41
42 import urllineedit;
43
44 import QtGui.QLineEdit;
45 import QtGui.QAbstractButton;
46
47 import searchlineedit;
48
49 import QtGui.QPainter;
50 import QtGui.QMouseEvent;
51 import QtGui.QMenu;
52 import QtGui.QStyle;
53 import QtGui.QStyleOptionFrameV2;
54
55 /*
56 QT_BEGIN_NAMESPACE
57 class QMenu;
58 QT_END_NAMESPACE
59
60 class SearchButton;
61 */
62
63 /*
64 Clear button on the right hand side of the search widget.
65 Hidden by default
66 "A circle with an X in it"
67 */
68 class ClearButton : public QAbstractButton
69 {
70 Q_OBJECT
71
72 public:
73 this(QWidget *parent = null)
74 {
75 super(parent);
76 setCursor(Qt.ArrowCursor);
77 setToolTip(tr("Clear"));
78 setVisible(false);
79 setFocusPolicy(Qt.NoFocus);
80 }
81 void paintEvent(QPaintEvent *event)
82 {
83 Q_UNUSED(event);
84 QPainter painter(this);
85 int height = this.height();
86
87 painter.setRenderHint(QPainter::Antialiasing, true);
88 QColor color = palette().color(QPalette.Mid);
89 painter.setBrush(isDown()
90 ? palette().color(QPalette.Dark)
91 : palette().color(QPalette.Mid));
92 painter.setPen(painter.brush().color());
93 int size = width();
94 int offset = size / 5;
95 int radius = size - offset * 2;
96 painter.drawEllipse(offset, offset, radius, radius);
97
98 painter.setPen(palette().color(QPalette.Base));
99 int border = offset * 2;
100 painter.drawLine(border, border, width() - border, height - border);
101 painter.drawLine(border, height - border, width() - border, border);
102 }
103
104 public slots:
105 void textChanged(QString &text)
106 {
107 setVisible(!text.isEmpty());
108 }
109
110 }
111
112 /*
113 Search icon on the left hand side of the search widget
114 When a menu is set a down arrow appears
115 */
116 class SearchButton : public QAbstractButton {
117 public:
118 SearchButton(QWidget *parent = null)
119 {
120 super(parent);
121 m_menu = 0;
122 setObjectName(QLatin1String("SearchButton"));
123 setCursor(Qt.ArrowCursor);
124 setFocusPolicy(Qt.NoFocus);
125 }
126
127 void paintEvent(QPaintEvent *event)
128 {
129 Q_UNUSED(event);
130 QPainterPath myPath;
131
132 int radius = (height() / 5) * 2;
133 QRect circle(height() / 3 - 1, height() / 4, radius, radius);
134 myPath.addEllipse(circle);
135
136 myPath.arcMoveTo(circle, 300);
137 QPointF c = myPath.currentPosition();
138 int diff = height() / 7;
139 myPath.lineTo(qMin(width() - 2, (int)c.x() + diff), c.y() + diff);
140
141 QPainter painter(this);
142 painter.setRenderHint(QPainter::Antialiasing, true);
143 painter.setPen(QPen(Qt.darkGray, 2));
144 painter.drawPath(myPath);
145
146 if (m_menu) {
147 QPainterPath dropPath;
148 dropPath.arcMoveTo(circle, 320);
149 QPointF c = dropPath.currentPosition();
150 c = QPointF(c.x() + 3.5, c.y() + 0.5);
151 dropPath.moveTo(c);
152 dropPath.lineTo(c.x() + 4, c.y());
153 dropPath.lineTo(c.x() + 2, c.y() + 2);
154 dropPath.closeSubpath();
155 painter.setPen(Qt.darkGray);
156 painter.setBrush(Qt.darkGray);
157 painter.setRenderHint(QPainter::Antialiasing, false);
158 painter.drawPath(dropPath);
159 }
160 painter.end();
161 }
162 QMenu *m_menu;
163
164 protected:
165 void mousePressEvent(QMouseEvent *event)
166 {
167 if (m_menu && event.button() == Qt.LeftButton) {
168 QWidget *p = parentWidget();
169 if (p) {
170 QPoint r = p.mapToGlobal(QPoint(0, p.height()));
171 m_menu.exec(QPoint(r.x() + height() / 2, r.y()));
172 }
173 event.accept();
174 }
175 QAbstractButton::mousePressEvent(event);
176 }
177 }
178
179 class SearchLineEdit : public ExLineEdit
180 {
181 Q_OBJECT
182 Q_PROPERTY(QString inactiveText READ inactiveText WRITE setInactiveText)
183
184 signals:
185 void textChanged(QString &text);
186
187 public:
188 /*
189 SearchLineEdit is an enhanced QLineEdit
190 - A Search icon on the left with optional menu
191 - When there is no text and doesn't have focus an "inactive text" is displayed
192 - When there is text a clear button is displayed on the right hand side
193 */
194 this(QWidget *parent = null) : ExLineEdit(parent),
195 m_searchButton(new SearchButton(this))
196 {
197 connect(lineEdit(), SIGNAL(textChanged(QString &)),
198 this, SIGNAL(textChanged(QString &)));
199 setLeftWidget(m_searchButton);
200 m_inactiveText = tr("Search");
201
202 QSizePolicy policy = sizePolicy();
203 setSizePolicy(QSizePolicy::Preferred, policy.verticalPolicy());
204 }
205
206 QString inactiveText()
207 {
208 return m_inactiveText;
209 }
210
211 void setInactiveText(QString &text)
212 {
213 m_inactiveText = text;
214 }
215
216 QMenu *menu()
217 {
218 if (!m_searchButton.m_menu) {
219 m_searchButton.m_menu = new QMenu(m_searchButton);
220 if (isVisible())
221 (const_cast<SearchLineEdit*>(this)).updateGeometries();
222 }
223 return m_searchButton.m_menu;
224 }
225
226 void setMenu(QMenu *menu)
227 {
228 if (m_searchButton.m_menu)
229 m_searchButton.m_menu.deleteLater();
230 m_searchButton.m_menu = menu;
231 updateGeometries();
232 }
233
234 protected:
235 void resizeEvent(QResizeEvent *event)
236 {
237 updateGeometries();
238 ExLineEdit.resizeEvent(event);
239 }
240
241 void paintEvent(QPaintEvent *event)
242 {
243 if (lineEdit().text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
244 ExLineEdit.paintEvent(event);
245 QStyleOptionFrameV2 panel;
246 initStyleOption(&panel);
247 QRect r = style().subElementRect(QStyle::SE_LineEditContents, &panel, this);
248 QFontMetrics fm = fontMetrics();
249 int horizontalMargin = lineEdit().x();
250 QRect lineRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2,
251 r.width() - 2 * horizontalMargin, fm.height());
252 QPainter painter(this);
253 painter.setPen(palette().brush(QPalette.Disabled, QPalette.Text).color());
254 painter.drawText(lineRect, Qt.AlignLeft|Qt.AlignVCenter, m_inactiveText);
255 } else {
256 ExLineEdit.paintEvent(event);
257 }
258 }
259
260 private:
261 void updateGeometries()
262 {
263 int menuHeight = height();
264 int menuWidth = menuHeight + 1;
265 if (!m_searchButton.m_menu)
266 menuWidth = (menuHeight / 5) * 4;
267 m_searchButton.resize(QSize(menuWidth, menuHeight));
268 }
269
270 SearchButton *m_searchButton;
271 QString m_inactiveText;
272 }