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33
34 #include "searchlineedit.h"
35
36 #include <QtGui/QPainter>
37 #include <QtGui/QMouseEvent>
38 #include <QtWidgets/QMenu>
39 #include <QtWidgets/QStyle>
40 #include <QtWidgets/QStyleOptionFrameV2>
41
ClearButton(QWidget * parent)42 ClearButton::ClearButton(QWidget *parent)
43 : QAbstractButton(parent)
44 {
45 #ifndef QT_NO_CURSOR
46 setCursor(Qt::ArrowCursor);
47 #endif // QT_NO_CURSOR
48 setToolTip(tr("Clear"));
49 setVisible(false);
50 setFocusPolicy(Qt::NoFocus);
51 }
52
paintEvent(QPaintEvent * event)53 void ClearButton::paintEvent(QPaintEvent *event)
54 {
55 Q_UNUSED(event);
56 QPainter painter(this);
57 int height = this->height();
58
59 painter.setRenderHint(QPainter::Antialiasing, true);
60 painter.setBrush(isDown()
61 ? palette().color(QPalette::Dark)
62 : palette().color(QPalette::Mid));
63 painter.setPen(painter.brush().color());
64 int size = width();
65 int offset = size / 5;
66 int radius = size - offset * 2;
67 painter.drawEllipse(offset, offset, radius, radius);
68
69 painter.setPen(palette().color(QPalette::Base));
70 int border = offset * 2;
71 painter.drawLine(border, border, width() - border, height - border);
72 painter.drawLine(border, height - border, width() - border, border);
73 }
74
textChanged(const QString & text)75 void ClearButton::textChanged(const QString &text)
76 {
77 setVisible(!text.isEmpty());
78 }
79
80 /*
81 Search icon on the left hand side of the search widget
82 When a menu is set a down arrow appears
83 */
84 class SearchButton : public QAbstractButton {
85 public:
86 SearchButton(QWidget *parent = 0);
87 void paintEvent(QPaintEvent *event);
88 QMenu *m_menu;
89
90 protected:
91 void mousePressEvent(QMouseEvent *event);
92 };
93
SearchButton(QWidget * parent)94 SearchButton::SearchButton(QWidget *parent)
95 : QAbstractButton(parent),
96 m_menu(0)
97 {
98 setObjectName(QLatin1String("SearchButton"));
99 #ifndef QT_NO_CURSOR
100 setCursor(Qt::ArrowCursor);
101 #endif //QT_NO_CURSOR
102 setFocusPolicy(Qt::NoFocus);
103 }
104
mousePressEvent(QMouseEvent * event)105 void SearchButton::mousePressEvent(QMouseEvent *event)
106 {
107 if (m_menu && event->button() == Qt::LeftButton) {
108 QWidget *p = parentWidget();
109 if (p) {
110 QPoint r = p->mapToGlobal(QPoint(0, p->height()));
111 m_menu->exec(QPoint(r.x() + height() / 2, r.y()));
112 }
113 event->accept();
114 }
115 QAbstractButton::mousePressEvent(event);
116 }
117
paintEvent(QPaintEvent * event)118 void SearchButton::paintEvent(QPaintEvent *event)
119 {
120 Q_UNUSED(event);
121 QPainterPath myPath;
122
123 int radius = (height() / 5) * 2;
124 QRect circle(height() / 3 - 1, height() / 4, radius, radius);
125 myPath.addEllipse(circle);
126
127 myPath.arcMoveTo(circle, 300);
128 QPointF c = myPath.currentPosition();
129 int diff = height() / 7;
130 myPath.lineTo(qMin(width() - 2, (int)c.x() + diff), c.y() + diff);
131
132 QPainter painter(this);
133 painter.setRenderHint(QPainter::Antialiasing, true);
134 painter.setPen(QPen(Qt::darkGray, 2));
135 painter.drawPath(myPath);
136
137 if (m_menu) {
138 QPainterPath dropPath;
139 dropPath.arcMoveTo(circle, 320);
140 QPointF c = dropPath.currentPosition();
141 c = QPointF(c.x() + 3.5, c.y() + 0.5);
142 dropPath.moveTo(c);
143 dropPath.lineTo(c.x() + 4, c.y());
144 dropPath.lineTo(c.x() + 2, c.y() + 2);
145 dropPath.closeSubpath();
146 painter.setPen(Qt::darkGray);
147 painter.setBrush(Qt::darkGray);
148 painter.setRenderHint(QPainter::Antialiasing, false);
149 painter.drawPath(dropPath);
150 }
151 painter.end();
152 }
153
154 /*
155 SearchLineEdit is an enhanced QLineEdit
156 - A Search icon on the left with optional menu
157 - When there is no text and doesn't have focus an "inactive text" is displayed
158 - When there is text a clear button is displayed on the right hand side
159 */
SearchLineEdit(QWidget * parent)160 SearchLineEdit::SearchLineEdit(QWidget *parent) : ExLineEdit(parent),
161 m_searchButton(new SearchButton(this))
162 {
163 connect(lineEdit(), SIGNAL(textChanged(QString)),
164 this, SIGNAL(textChanged(QString)));
165 setLeftWidget(m_searchButton);
166 m_inactiveText = tr("Search");
167
168 QSizePolicy policy = sizePolicy();
169 setSizePolicy(QSizePolicy::Preferred, policy.verticalPolicy());
170 }
171
paintEvent(QPaintEvent * event)172 void SearchLineEdit::paintEvent(QPaintEvent *event)
173 {
174 if (lineEdit()->text().isEmpty() && !hasFocus() && !m_inactiveText.isEmpty()) {
175 ExLineEdit::paintEvent(event);
176 QStyleOptionFrameV2 panel;
177 initStyleOption(&panel);
178 QRect r = style()->subElementRect(QStyle::SE_LineEditContents, &panel, this);
179 QFontMetrics fm = fontMetrics();
180 int horizontalMargin = lineEdit()->x();
181 QRect lineRect(horizontalMargin + r.x(), r.y() + (r.height() - fm.height() + 1) / 2,
182 r.width() - 2 * horizontalMargin, fm.height());
183 QPainter painter(this);
184 painter.setPen(palette().brush(QPalette::Disabled, QPalette::Text).color());
185 painter.drawText(lineRect, Qt::AlignLeft|Qt::AlignVCenter, m_inactiveText);
186 } else {
187 ExLineEdit::paintEvent(event);
188 }
189 }
190
resizeEvent(QResizeEvent * event)191 void SearchLineEdit::resizeEvent(QResizeEvent *event)
192 {
193 updateGeometries();
194 ExLineEdit::resizeEvent(event);
195 }
196
updateGeometries()197 void SearchLineEdit::updateGeometries()
198 {
199 int menuHeight = height();
200 int menuWidth = menuHeight + 1;
201 if (!m_searchButton->m_menu)
202 menuWidth = (menuHeight / 5) * 4;
203 m_searchButton->resize(QSize(menuWidth, menuHeight));
204 }
205
inactiveText() const206 QString SearchLineEdit::inactiveText() const
207 {
208 return m_inactiveText;
209 }
210
setInactiveText(const QString & text)211 void SearchLineEdit::setInactiveText(const QString &text)
212 {
213 m_inactiveText = text;
214 }
215
setMenu(QMenu * menu)216 void SearchLineEdit::setMenu(QMenu *menu)
217 {
218 if (m_searchButton->m_menu)
219 m_searchButton->m_menu->deleteLater();
220 m_searchButton->m_menu = menu;
221 updateGeometries();
222 }
223
menu() const224 QMenu *SearchLineEdit::menu() const
225 {
226 if (!m_searchButton->m_menu) {
227 m_searchButton->m_menu = new QMenu(m_searchButton);
228 if (isVisible())
229 (const_cast<SearchLineEdit*>(this))->updateGeometries();
230 }
231 return m_searchButton->m_menu;
232 }
233
234