source: trunk/examples/widgets/styles/norwegianwoodstyle.cpp@ 117

Last change on this file since 117 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 10.6 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the examples 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
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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.
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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.
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36** If you are unsure which license is appropriate for your use, please
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38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <QtGui>
43
44#include "norwegianwoodstyle.h"
45
46//! [0]
47void NorwegianWoodStyle::polish(QPalette &palette)
48{
49 QColor brown(212, 140, 95);
50 QColor beige(236, 182, 120);
51 QColor slightlyOpaqueBlack(0, 0, 0, 63);
52
53 QPixmap backgroundImage(":/images/woodbackground.png");
54 QPixmap buttonImage(":/images/woodbutton.png");
55 QPixmap midImage = buttonImage;
56
57 QPainter painter;
58 painter.begin(&midImage);
59 painter.setPen(Qt::NoPen);
60 painter.fillRect(midImage.rect(), slightlyOpaqueBlack);
61 painter.end();
62//! [0]
63
64//! [1]
65 palette = QPalette(brown);
66
67 palette.setBrush(QPalette::BrightText, Qt::white);
68 palette.setBrush(QPalette::Base, beige);
69 palette.setBrush(QPalette::Highlight, Qt::darkGreen);
70 setTexture(palette, QPalette::Button, buttonImage);
71 setTexture(palette, QPalette::Mid, midImage);
72 setTexture(palette, QPalette::Window, backgroundImage);
73
74 QBrush brush = palette.background();
75 brush.setColor(brush.color().dark());
76
77 palette.setBrush(QPalette::Disabled, QPalette::WindowText, brush);
78 palette.setBrush(QPalette::Disabled, QPalette::Text, brush);
79 palette.setBrush(QPalette::Disabled, QPalette::ButtonText, brush);
80 palette.setBrush(QPalette::Disabled, QPalette::Base, brush);
81 palette.setBrush(QPalette::Disabled, QPalette::Button, brush);
82 palette.setBrush(QPalette::Disabled, QPalette::Mid, brush);
83}
84//! [1]
85
86//! [3]
87void NorwegianWoodStyle::polish(QWidget *widget)
88//! [3] //! [4]
89{
90 if (qobject_cast<QPushButton *>(widget)
91 || qobject_cast<QComboBox *>(widget))
92 widget->setAttribute(Qt::WA_Hover, true);
93}
94//! [4]
95
96//! [5]
97void NorwegianWoodStyle::unpolish(QWidget *widget)
98//! [5] //! [6]
99{
100 if (qobject_cast<QPushButton *>(widget)
101 || qobject_cast<QComboBox *>(widget))
102 widget->setAttribute(Qt::WA_Hover, false);
103}
104//! [6]
105
106//! [7]
107int NorwegianWoodStyle::pixelMetric(PixelMetric metric,
108//! [7] //! [8]
109 const QStyleOption *option,
110 const QWidget *widget) const
111{
112 switch (metric) {
113 case PM_ComboBoxFrameWidth:
114 return 8;
115 case PM_ScrollBarExtent:
116 return QMotifStyle::pixelMetric(metric, option, widget) + 4;
117 default:
118 return QMotifStyle::pixelMetric(metric, option, widget);
119 }
120}
121//! [8]
122
123//! [9]
124int NorwegianWoodStyle::styleHint(StyleHint hint, const QStyleOption *option,
125//! [9] //! [10]
126 const QWidget *widget,
127 QStyleHintReturn *returnData) const
128{
129 switch (hint) {
130 case SH_DitherDisabledText:
131 return int(false);
132 case SH_EtchDisabledText:
133 return int(true);
134 default:
135 return QMotifStyle::styleHint(hint, option, widget, returnData);
136 }
137}
138//! [10]
139
140//! [11]
141void NorwegianWoodStyle::drawPrimitive(PrimitiveElement element,
142//! [11] //! [12]
143 const QStyleOption *option,
144 QPainter *painter,
145 const QWidget *widget) const
146{
147 switch (element) {
148 case PE_PanelButtonCommand:
149 {
150 int delta = (option->state & State_MouseOver) ? 64 : 0;
151 QColor slightlyOpaqueBlack(0, 0, 0, 63);
152 QColor semiTransparentWhite(255, 255, 255, 127 + delta);
153 QColor semiTransparentBlack(0, 0, 0, 127 - delta);
154
155 int x, y, width, height;
156 option->rect.getRect(&x, &y, &width, &height);
157//! [12]
158
159//! [13]
160 QPainterPath roundRect = roundRectPath(option->rect);
161//! [13] //! [14]
162 int radius = qMin(width, height) / 2;
163//! [14]
164
165//! [15]
166 QBrush brush;
167//! [15] //! [16]
168 bool darker;
169
170 const QStyleOptionButton *buttonOption =
171 qstyleoption_cast<const QStyleOptionButton *>(option);
172 if (buttonOption
173 && (buttonOption->features & QStyleOptionButton::Flat)) {
174 brush = option->palette.background();
175 darker = (option->state & (State_Sunken | State_On));
176 } else {
177 if (option->state & (State_Sunken | State_On)) {
178 brush = option->palette.mid();
179 darker = !(option->state & State_Sunken);
180 } else {
181 brush = option->palette.button();
182 darker = false;
183//! [16] //! [17]
184 }
185//! [17] //! [18]
186 }
187//! [18]
188
189//! [19]
190 painter->save();
191//! [19] //! [20]
192 painter->setRenderHint(QPainter::Antialiasing, true);
193//! [20] //! [21]
194 painter->fillPath(roundRect, brush);
195//! [21] //! [22]
196 if (darker)
197//! [22] //! [23]
198 painter->fillPath(roundRect, slightlyOpaqueBlack);
199//! [23]
200
201//! [24]
202 int penWidth;
203//! [24] //! [25]
204 if (radius < 10)
205 penWidth = 3;
206 else if (radius < 20)
207 penWidth = 5;
208 else
209 penWidth = 7;
210
211 QPen topPen(semiTransparentWhite, penWidth);
212 QPen bottomPen(semiTransparentBlack, penWidth);
213
214 if (option->state & (State_Sunken | State_On))
215 qSwap(topPen, bottomPen);
216//! [25]
217
218//! [26]
219 int x1 = x;
220 int x2 = x + radius;
221 int x3 = x + width - radius;
222 int x4 = x + width;
223
224 if (option->direction == Qt::RightToLeft) {
225 qSwap(x1, x4);
226 qSwap(x2, x3);
227 }
228
229 QPolygon topHalf;
230 topHalf << QPoint(x1, y)
231 << QPoint(x4, y)
232 << QPoint(x3, y + radius)
233 << QPoint(x2, y + height - radius)
234 << QPoint(x1, y + height);
235
236 painter->setClipPath(roundRect);
237 painter->setClipRegion(topHalf, Qt::IntersectClip);
238 painter->setPen(topPen);
239 painter->drawPath(roundRect);
240//! [26] //! [32]
241
242 QPolygon bottomHalf = topHalf;
243 bottomHalf[0] = QPoint(x4, y + height);
244
245 painter->setClipPath(roundRect);
246 painter->setClipRegion(bottomHalf, Qt::IntersectClip);
247 painter->setPen(bottomPen);
248 painter->drawPath(roundRect);
249
250 painter->setPen(option->palette.foreground().color());
251 painter->setClipping(false);
252 painter->drawPath(roundRect);
253
254 painter->restore();
255 }
256 break;
257//! [32] //! [33]
258 default:
259//! [33] //! [34]
260 QMotifStyle::drawPrimitive(element, option, painter, widget);
261 }
262}
263//! [34]
264
265//! [35]
266void NorwegianWoodStyle::drawControl(ControlElement element,
267//! [35] //! [36]
268 const QStyleOption *option,
269 QPainter *painter,
270 const QWidget *widget) const
271{
272 switch (element) {
273 case CE_PushButtonLabel:
274 {
275 QStyleOptionButton myButtonOption;
276 const QStyleOptionButton *buttonOption =
277 qstyleoption_cast<const QStyleOptionButton *>(option);
278 if (buttonOption) {
279 myButtonOption = *buttonOption;
280 if (myButtonOption.palette.currentColorGroup()
281 != QPalette::Disabled) {
282 if (myButtonOption.state & (State_Sunken | State_On)) {
283 myButtonOption.palette.setBrush(QPalette::ButtonText,
284 myButtonOption.palette.brightText());
285 }
286 }
287 }
288 QMotifStyle::drawControl(element, &myButtonOption, painter, widget);
289 }
290 break;
291 default:
292 QMotifStyle::drawControl(element, option, painter, widget);
293 }
294}
295//! [36]
296
297//! [37]
298void NorwegianWoodStyle::setTexture(QPalette &palette, QPalette::ColorRole role,
299//! [37] //! [38]
300 const QPixmap &pixmap)
301{
302 for (int i = 0; i < QPalette::NColorGroups; ++i) {
303 QColor color = palette.brush(QPalette::ColorGroup(i), role).color();
304 palette.setBrush(QPalette::ColorGroup(i), role, QBrush(color, pixmap));
305 }
306}
307//! [38]
308
309//! [39]
310QPainterPath NorwegianWoodStyle::roundRectPath(const QRect &rect)
311//! [39] //! [40]
312{
313 int radius = qMin(rect.width(), rect.height()) / 2;
314 int diam = 2 * radius;
315
316 int x1, y1, x2, y2;
317 rect.getCoords(&x1, &y1, &x2, &y2);
318
319 QPainterPath path;
320 path.moveTo(x2, y1 + radius);
321 path.arcTo(QRect(x2 - diam, y1, diam, diam), 0.0, +90.0);
322 path.lineTo(x1 + radius, y1);
323 path.arcTo(QRect(x1, y1, diam, diam), 90.0, +90.0);
324 path.lineTo(x1, y2 - radius);
325 path.arcTo(QRect(x1, y2 - diam, diam, diam), 180.0, +90.0);
326 path.lineTo(x1 + radius, y2);
327 path.arcTo(QRect(x2 - diam, y2 - diam, diam, diam), 270.0, +90.0);
328 path.closeSubpath();
329 return path;
330}
331//! [40]
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