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1 | /**************************************************************************** |
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2 | ** |
3 | ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). |
4 | ** Contact: http://www.qt-project.org/legal |
5 | ** |
6 | ** This file is part of the tools applications of the Qt Toolkit. |
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8 | ** $QT_BEGIN_LICENSE:LGPL$ |
9 | ** Commercial License Usage |
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15 | ** use the contact form at http://qt.digia.com/contact-us. |
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17 | ** GNU Lesser General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
19 | ** General Public License version 2.1 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 2.1 requirements |
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24 | ** |
25 | ** In addition, as a special exception, Digia gives you certain additional |
26 | ** rights. These rights are described in the Digia Qt LGPL Exception |
27 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
28 | ** |
29 | ** GNU General Public License Usage |
30 | ** Alternatively, this file may be used under the terms of the GNU |
31 | ** General Public License version 3.0 as published by the Free Software |
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34 | ** ensure the GNU General Public License version 3.0 requirements will be |
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36 | ** |
37 | ** |
38 | ** $QT_END_LICENSE$ |
39 | ** |
40 | ****************************************************************************/ |
41 | |
42 | #include "colorbutton.h" |
43 | |
44 | #include <QApplication> |
45 | #include <QtEvents> |
46 | #include <QColorDialog> |
47 | #include <QPainter> |
48 | #include <QMimeData> |
49 | #include <QStyle> |
50 | #include <QStyleOption> |
51 | |
52 | QT_BEGIN_NAMESPACE |
53 | |
54 | ColorButton::ColorButton(QWidget *parent) |
55 | : QAbstractButton(parent) |
56 | , col(Qt::black) |
57 | , mousepressed(false) |
58 | { |
59 | setAcceptDrops(true); |
60 | connect(this, SIGNAL(clicked()), SLOT(changeColor())); |
61 | } |
62 | |
63 | |
64 | ColorButton::ColorButton(const QColor &c, QWidget *parent) |
65 | : QAbstractButton(parent) |
66 | , col(c) |
67 | { |
68 | setAcceptDrops(true); |
69 | connect(this, SIGNAL(clicked()), SLOT(changeColor())); |
70 | } |
71 | |
72 | |
73 | void ColorButton::setColor(const QColor &c) |
74 | { |
75 | col = c; |
76 | update(); |
77 | } |
78 | |
79 | |
80 | void ColorButton::changeColor() |
81 | { |
82 | QColor c = QColorDialog::getColor(col, qApp->activeWindow()); |
83 | |
84 | if (c.isValid()) { |
85 | setColor(c); |
86 | emit colorChanged(color()); |
87 | } |
88 | } |
89 | |
90 | |
91 | QSize ColorButton::sizeHint() const |
92 | { |
93 | return QSize(40, 25); |
94 | } |
95 | |
96 | |
97 | QSize ColorButton::minimumSizeHint() const |
98 | { |
99 | return QSize(40, 25); |
100 | } |
101 | |
102 | |
103 | void ColorButton::drawButton(QPainter *p) |
104 | { |
105 | QStyleOptionButton buttonOptions; |
106 | buttonOptions.init(this); |
107 | buttonOptions.features = QStyleOptionButton::None; |
108 | buttonOptions.rect = rect(); |
109 | buttonOptions.palette = palette(); |
110 | buttonOptions.state = (isDown() ? QStyle::State_Sunken : QStyle::State_Raised); |
111 | style()->drawPrimitive(QStyle::PE_PanelButtonBevel, &buttonOptions, p, this); |
112 | |
113 | p->save(); |
114 | drawButtonLabel(p); |
115 | p->restore(); |
116 | |
117 | QStyleOptionFocusRect frectOptions; |
118 | frectOptions.init(this); |
119 | frectOptions.rect = style()->subElementRect(QStyle::SE_PushButtonFocusRect, &buttonOptions, this); |
120 | if (hasFocus()) |
121 | style()->drawPrimitive(QStyle::PE_FrameFocusRect, &frectOptions, p, this); |
122 | } |
123 | |
124 | |
125 | void ColorButton::drawButtonLabel(QPainter *p) |
126 | { |
127 | QPalette::ColorGroup cg = |
128 | (isEnabled() ? (hasFocus() ? QPalette::Active : QPalette::Inactive) : QPalette::Disabled); |
129 | |
130 | p->setPen(palette().color(cg, QPalette::ButtonText)); |
131 | p->setBrush(col); |
132 | p->drawRect(width() / 4, height() / 4, width() / 2 - 1, height() / 2 - 1); |
133 | } |
134 | |
135 | |
136 | void ColorButton::dragEnterEvent(QDragEnterEvent *e) |
137 | { |
138 | if (!e->mimeData()->hasColor()) { |
139 | e->ignore(); |
140 | return; |
141 | } |
142 | } |
143 | |
144 | |
145 | void ColorButton::dragMoveEvent(QDragMoveEvent *e) |
146 | { |
147 | if (!e->mimeData()->hasColor()) { |
148 | e->ignore(); |
149 | return; |
150 | } |
151 | |
152 | e->accept(); |
153 | } |
154 | |
155 | |
156 | void ColorButton::dropEvent(QDropEvent *e) |
157 | { |
158 | if (!e->mimeData()->hasColor()) { |
159 | e->ignore(); |
160 | return; |
161 | } |
162 | |
163 | QColor c = qvariant_cast<QColor>(e->mimeData()->colorData()); |
164 | setColor(c); |
165 | emit colorChanged(color()); |
166 | } |
167 | |
168 | |
169 | void ColorButton::mousePressEvent(QMouseEvent *e) |
170 | { |
171 | presspos = e->pos(); |
172 | mousepressed = true; |
173 | QAbstractButton::mousePressEvent(e); |
174 | } |
175 | |
176 | |
177 | void ColorButton::mouseReleaseEvent(QMouseEvent *e) |
178 | { |
179 | mousepressed = false; |
180 | QAbstractButton::mouseReleaseEvent(e); |
181 | } |
182 | |
183 | |
184 | void ColorButton::mouseMoveEvent(QMouseEvent *e) |
185 | { |
186 | if (!mousepressed) |
187 | return; |
188 | |
189 | if ((presspos - e->pos()).manhattanLength() > QApplication::startDragDistance()) { |
190 | mousepressed = false; |
191 | setDown(false); |
192 | |
193 | QDrag *drag = new QDrag(this); |
194 | QMimeData *data = new QMimeData; |
195 | data->setColorData(color()); |
196 | drag->setMimeData(data); |
197 | drag->start(Qt::CopyAction); |
198 | } |
199 | } |
200 | |
201 | void ColorButton::paintEvent(QPaintEvent *) |
202 | { |
203 | QPainter p(this); |
204 | drawButton(&p); |
205 | } |
206 | |
207 | QT_END_NAMESPACE |
208 |
Warning: That file was not part of the compilation database. It may have many parsing errors.