1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "searchlineedit.h"
#include <QtGui/QPainter>
#include <QtGui/QMouseEvent>
#include <QtGui/QMenu>
#include <QtGui/QStyle>
#include <QtGui/QStyleOptionFrameV2>
ClearButton::ClearButton(QWidget *parent)
: QAbstractButton(parent)
{
#ifndef QT_NO_CURSOR
setCursor(Qt::ArrowCursor);
#endif // QT_NO_CURSOR
setToolTip(tr("Clear"));
setVisible(false);
setFocusPolicy(Qt::NoFocus);
}
void ClearButton::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter painter(this);
int height = this->height();
painter.setRenderHint(QPainter::Antialiasing, true);
QColor color = palette().color(QPalette::Mid);
painter.setBrush(isDown()
? palette().color(QPalette::Dark)
: palette().color(QPalette::Mid));
painter.setPen(painter.brush().color());
int size = width();
int offset = size / 5;
int radius = size - offset * 2;
painter.drawEllipse(offset, offset, radius, radius);
painter.setPen(palette().color(QPalette::Base));
int border = offset * 2;
painter.drawLine(border, border, width() - border, height - border);
painter.drawLine(border, height - border, width() - border, border);
}
void ClearButton::textChanged(const QString &text)
{
setVisible(!text.isEmpty());
}
/*
Search icon on the left hand side of the search widget
When a menu is set a down arrow appears
*/
class SearchButton : public QAbstractButton {
public:
SearchButton(QWidget *parent = 0);
void paintEvent(QPaintEvent *event);
QMenu *m_menu;
protected:
void mousePressEvent(QMouseEvent *event);
};
SearchButton::SearchButton(QWidget *parent)
: QAbstractButton(parent),
m_menu(0)
{
setObjectName(QLatin1String("SearchButton"));
#ifndef QT_NO_CURSOR
setCursor(Qt::ArrowCursor);
#endif //QT_NO_CURSOR
setFocusPolicy(Qt::NoFocus);
}
void SearchButton::mousePressEvent(QMouseEvent *event)
{
if (m_menu && event->button() == Qt::LeftButton) {
QWidget *p = parentWidget();
if (p) {
QPoint r = p->mapToGlobal(QPoint(0, p->height()));
m_menu->exec(QPoint(r.x() + height() / 2, r.y()));
}
event->accept();
}
QAbstractButton::mousePressEvent(event);
}
void SearchButton::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainterPath myPath;
int radius = (height() / 5) * 2;
QRect circle(height() / 3 - 1, height() / 4, radius, radius);
myPath.addEllipse(circle);
myPath.arcMoveTo(circle, 300);
QPointF c = myPath.currentPosition();
int diff = height() / 7;
myPath.lineTo(qMin(width() - 2, (int)c.x() + diff), c.y() + diff);
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setPen(QPen(Qt::darkGray, 2));
painter.drawPath(myPath);
if (m_menu) {
QPainterPath dropPath;
dropPath.arcMoveTo(circle, 320);
QPointF c = dropPath.currentPosition();
c = QPointF(c.x() + 3.5, c.y() + 0.5);
dropPath.moveTo(c);
dropPath.lineTo(c.x() + 4, c.y());
dropPath.lineTo(c.x() + 2, c.y() + 2);
dropPath.closeSubpath();
painter.setPen(Qt::darkGray);
painter.setBrush(Qt::darkGray);
painter.setRenderHint(QPainter::Antialiasing, false);
painter.drawPath(dropPath);
}
painter.end();
}
/*
SearchLineEdit is an enhanced QLineEdit
- A Search icon on the left with optional menu
- When there is no text and doesn't have focus an "inactive text" is displayed
- When there is text a clear button is displayed on the right hand side
*/
SearchLineEdit::SearchLineEdit(QWidget *parent) : ExLineEdit(parent),
m_searchButton(new SearchButton(this))
{
connect(lineEdit(), SIGNAL(textChanged(QString)),
this, SIGNAL(textChanged(QString)));
setLeftWidget(m_searchButton);
m_inactiveText = tr("Search");
QSizePolicy policy = sizePolicy();
setSizePolicy(QSizePolicy::Preferred, policy.verticalPolicy());
}
void SearchLineEdit::paintEvent(QPaintEvent *event)
{
if (lineEdit()->text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
ExLineEdit::paintEvent(event);
QStyleOptionFrameV2 panel;
initStyleOption(&panel);
QRect r = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
QFontMetrics fm = fontMetrics();
int horizontalMargin = lineEdit()->x();
QRect lineRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2,
r.width() - 2 * horizontalMargin, fm.height());
QPainter painter(this);
painter.setPen(palette().brush(QPalette::Disabled, QPalette::Text).color());
painter.drawText(lineRect, Qt::AlignLeft|Qt::AlignVCenter, m_inactiveText);
} else {
ExLineEdit::paintEvent(event);
}
}
void SearchLineEdit::resizeEvent(QResizeEvent *event)
{
updateGeometries();
ExLineEdit::resizeEvent(event);
}
void SearchLineEdit::updateGeometries()
{
int menuHeight = height();
int menuWidth = menuHeight + 1;
if (!m_searchButton->m_menu)
menuWidth = (menuHeight / 5) * 4;
m_searchButton->resize(QSize(menuWidth, menuHeight));
}
QString SearchLineEdit::inactiveText() const
{
return m_inactiveText;
}
void SearchLineEdit::setInactiveText(const QString &text)
{
m_inactiveText = text;
}
void SearchLineEdit::setMenu(QMenu *menu)
{
if (m_searchButton->m_menu)
m_searchButton->m_menu->deleteLater();
m_searchButton->m_menu = menu;
updateGeometries();
}
QMenu *SearchLineEdit::menu() const
{
if (!m_searchButton->m_menu) {
m_searchButton->m_menu = new QMenu(m_searchButton);
if (isVisible())
(const_cast<SearchLineEdit*>(this))->updateGeometries();
}
return m_searchButton->m_menu;
}
|
