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41
42 #include <qapplication.h>
43 #include <qwidget.h>
44 #include <qpainter.h>
45 #include <qdrawutil.h>
46 #include "qdecorationstyled_qws.h"
47 #include "qstyle.h"
48 #include "qstyleoption.h"
49 #include "qpaintengine.h"
50
51 QT_BEGIN_NAMESPACE
52
53 #if !defined(QT_NO_QWS_DECORATION_STYLED) || defined(QT_PLUGIN)
54
QDecorationStyled()55 QDecorationStyled::QDecorationStyled()
56 : QDecorationDefault()
57 {
58 }
59
~QDecorationStyled()60 QDecorationStyled::~QDecorationStyled()
61 {
62 }
63
titleBarHeight(const QWidget * widget)64 int QDecorationStyled::titleBarHeight(const QWidget *widget)
65 {
66 QStyleOptionTitleBar opt;
67 opt.subControls = QStyle::SC_TitleBarLabel
68 | QStyle::SC_TitleBarSysMenu
69 | QStyle::SC_TitleBarNormalButton
70 | QStyle::SC_TitleBarContextHelpButton
71 | QStyle::SC_TitleBarMinButton
72 | QStyle::SC_TitleBarMaxButton
73 | QStyle::SC_TitleBarCloseButton;
74 opt.titleBarFlags = widget->windowFlags();
75 opt.direction = QApplication::layoutDirection();
76 opt.text = windowTitleFor(widget);
77 opt.icon = widget->windowIcon();
78 opt.rect = widget->rect();
79
80 QStyle *style = QApplication::style();
81 if (!style)
82 return 18;
83
84 return style->pixelMetric(QStyle::PM_TitleBarHeight, &opt, 0);
85 }
86
paint(QPainter * painter,const QWidget * widget,int decorationRegion,DecorationState state)87 bool QDecorationStyled::paint(QPainter *painter, const QWidget *widget, int decorationRegion,
88 DecorationState state)
89 {
90 if (decorationRegion == None)
91 return false;
92
93 bool isActive = (widget == qApp->activeWindow());
94 QPalette pal = qApp->palette();
95 //ideally, the difference between Active and Inactive should be enough, so we shouldn't need to test this
96 if (!isActive) {
97 //pal.setCurrentColorGroup(QPalette::Disabled); //Can't do this either, because of palette limitations
98 //copied from Q3TitleBar:
99 pal.setColor(QPalette::Inactive, QPalette::Highlight,
100 pal.color(QPalette::Inactive, QPalette::Dark));
101 pal.setColor(QPalette::Inactive, QPalette::Base,
102 pal.color(QPalette::Inactive, QPalette::Dark));
103 pal.setColor(QPalette::Inactive, QPalette::HighlightedText,
104 pal.color(QPalette::Inactive, QPalette::Window));
105 }
106
107 Qt::WindowFlags flags = widget->windowFlags();
108 bool hasBorder = !widget->isMaximized();
109 bool hasTitle = flags & Qt::WindowTitleHint;
110 bool hasSysMenu = flags & Qt::WindowSystemMenuHint;
111 bool hasContextHelp = flags & Qt::WindowContextHelpButtonHint;
112 bool hasMinimize = flags & Qt::WindowMinimizeButtonHint;
113 bool hasMaximize = flags & Qt::WindowMaximizeButtonHint;
114
115 bool paintAll = (DecorationRegion(decorationRegion) == All);
116 bool handled = false;
117
118 QStyle *style = QApplication::style();
119
120 // In the case of a borderless title bar, the title bar must be expanded one
121 // borderWidth to the left, right and up.
122 bool noTitleBorder = style->styleHint(QStyle::SH_TitleBar_NoBorder, 0, widget);
123 int borderWidth = style->pixelMetric(QStyle::PM_MDIFrameWidth, 0, 0);
124 int titleHeight = titleBarHeight(widget) + (noTitleBorder ? borderWidth : 0);
125 int titleExtra = noTitleBorder ? borderWidth : 0;
126
127 if ((paintAll || decorationRegion & Borders) && state == Normal && hasBorder) {
128 QRegion newClip = painter->clipRegion();
129 if (hasTitle) { // reduce flicker
130 QRect rect(widget->rect());
131 QRect r(rect.left() - titleExtra, rect.top() - titleHeight,
132 rect.width() + 2 * titleExtra, titleHeight);
133 newClip -= r;
134 }
135 if (!newClip.isEmpty()) {
136 QRect br = QDecoration::region(widget).boundingRect();
137 painter->save();
138 painter->setClipRegion(newClip);
139
140 QStyleOptionFrame opt;
141 opt.palette = pal;
142 opt.rect = br;
143 opt.lineWidth = borderWidth;
144
145 if (isActive)
146 opt.state |= QStyle::State_Active;
147 bool porterDuff = painter->paintEngine()->hasFeature(QPaintEngine::PorterDuff);
148 if (porterDuff)
149 painter->setCompositionMode(QPainter::CompositionMode_Source);
150 painter->fillRect(br, pal.window());
151 if (porterDuff)
152 painter->setCompositionMode(QPainter::CompositionMode_SourceOver);
153 style->drawPrimitive(QStyle::PE_FrameWindow, &opt, painter, 0);
154 painter->restore();
155
156 decorationRegion &= (~Borders);
157 handled |= true;
158 }
159 }
160
161 if (hasTitle) {
162 painter->save();
163
164 QStyleOptionTitleBar opt;
165 opt.subControls = (decorationRegion & Title
166 ? QStyle::SC_TitleBarLabel : QStyle::SubControl(0))
167 | (decorationRegion & Menu
168 ? QStyle::SC_TitleBarSysMenu : QStyle::SubControl(0))
169 | (decorationRegion & Help
170 ? QStyle::SC_TitleBarContextHelpButton : QStyle::SubControl(0))
171 | (decorationRegion & Minimize
172 ? QStyle::SC_TitleBarMinButton : QStyle::SubControl(0))
173 | (decorationRegion & Maximize
174 ? QStyle::SC_TitleBarMaxButton : QStyle::SubControl(0))
175 | (decorationRegion & (Minimize | Maximize)
176 ? QStyle::SC_TitleBarNormalButton : QStyle::SubControl(0))
177 | (decorationRegion & Close
178 ? QStyle::SC_TitleBarCloseButton : QStyle::SubControl(0));
179 opt.titleBarFlags = widget->windowFlags();
180 opt.titleBarState = widget->windowState();
181 if (isActive)
182 opt.titleBarState |= QStyle::State_Active;
183 opt.text = windowTitleFor(widget);
184 opt.icon = widget->windowIcon();
185 opt.palette = pal;
186 opt.rect = QRect(widget->rect().x() - titleExtra, -titleHeight,
187 widget->rect().width() + 2 * titleExtra, titleHeight);
188
189 if (paintAll) {
190 painter->setClipRegion(opt.rect);
191 } else {
192 const QRect widgetRect = widget->rect();
193 QRegion newClip = opt.rect;
194 if (!(decorationRegion & Menu) && hasSysMenu)
195 newClip -= region(widget, widgetRect, Menu);
196 if (!(decorationRegion & Title) && hasTitle)
197 newClip -= region(widget, widgetRect, Title);
198 if (!(decorationRegion & Help) && hasContextHelp)
199 newClip -= region(widget, widgetRect, Help);
200 if (!(decorationRegion & Minimize) && hasMinimize)
201 newClip -= region(widget, widgetRect, Minimize);
202 if (!(decorationRegion & Maximize) && hasMaximize)
203 newClip -= region(widget, widgetRect, Maximize);
204 if (!(decorationRegion & (Minimize | Maximize)) && (hasMaximize | hasMinimize))
205 newClip -= region(widget, widgetRect, Normal);
206 if (!(decorationRegion & Close))
207 newClip -= region(widget, widgetRect, Close);
208 painter->setClipRegion(newClip);
209 }
210
211 if (state == Pressed)
212 opt.activeSubControls = opt.subControls;
213
214 style->drawComplexControl(QStyle::CC_TitleBar, &opt, painter, 0);
215 painter->restore();
216
217 decorationRegion &= ~(Title | Menu | Help | Normalize | Minimize | Maximize | Close);
218 handled |= true;
219 }
220
221 return handled;
222 }
223
region(const QWidget * widget,const QRect & rect,int decorationRegion)224 QRegion QDecorationStyled::region(const QWidget *widget, const QRect &rect, int decorationRegion)
225 {
226 QStyle *style = QApplication::style();
227
228 // In the case of a borderless title bar, the title bar must be expanded one
229 // borderWidth to the left, right and up.
230 bool noTitleBorder = style->styleHint(QStyle::SH_TitleBar_NoBorder, 0, widget);
231 int borderWidth = style->pixelMetric(QStyle::PM_MDIFrameWidth, 0, 0);
232 int titleHeight = titleBarHeight(widget) + (noTitleBorder ? borderWidth : 0);
233 int titleExtra = noTitleBorder ? borderWidth : 0;
234
235 QRect inside = QRect(rect.x() - titleExtra, rect.top() - titleHeight,
236 rect.width() + 2 * titleExtra, titleHeight);
237
238 Qt::WindowFlags flags = widget->windowFlags();
239 bool hasSysMenu = flags & Qt::WindowSystemMenuHint;
240 bool hasContextHelp = flags & Qt::WindowContextHelpButtonHint;
241 bool hasMinimize = flags & Qt::WindowMinimizeButtonHint;
242 bool hasMaximize = flags & Qt::WindowMaximizeButtonHint;
243
244 QStyleOptionTitleBar opt;
245 opt.subControls = QStyle::SC_TitleBarLabel
246 | QStyle::SC_TitleBarSysMenu
247 | QStyle::SC_TitleBarNormalButton
248 | QStyle::SC_TitleBarMinButton
249 | QStyle::SC_TitleBarMaxButton
250 | QStyle::SC_TitleBarCloseButton;
251 opt.titleBarFlags = widget->windowFlags();
252 opt.direction = QApplication::layoutDirection();
253 opt.text = windowTitleFor(widget);
254 opt.icon = widget->windowIcon();
255 opt.rect = inside;
256
257 QRegion region;
258 switch (decorationRegion) {
259 case Title:
260 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
261 QStyle::SC_TitleBarLabel, 0);
262 break;
263 case Menu:
264 if (hasSysMenu)
265 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
266 QStyle::SC_TitleBarSysMenu, 0);
267 break;
268 case Help:
269 if (hasContextHelp)
270 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
271 QStyle::SC_TitleBarContextHelpButton,
272 0);
273 break;
274 case Normalize:
275 if (hasMaximize | hasMinimize)
276 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
277 QStyle::SC_TitleBarNormalButton,
278 0);
279 break;
280 case Minimize:
281 if (hasMinimize)
282 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
283 QStyle::SC_TitleBarMinButton,
284 0);
285 break;
286 case Maximize:
287 if (hasMaximize)
288 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
289 QStyle::SC_TitleBarMaxButton,
290 0);
291 break;
292 case Close:
293 region = style->subControlRect(QStyle::CC_TitleBar, &opt,
294 QStyle::SC_TitleBarCloseButton, 0);
295 break;
296
297 default:
298 region = QDecorationDefault::region(widget, rect, decorationRegion);
299 }
300
301 opt.rect = QRect(rect.x() - titleExtra, rect.top() - titleHeight,
302 rect.width() + 2 * titleExtra,
303 rect.height() + titleHeight + titleExtra);
304
305 QStyleHintReturnMask mask;
306 style->styleHint(QStyle::SH_WindowFrame_Mask, &opt, 0, &mask);
307
308 return (mask.region.isEmpty() ? region : (region & mask.region));
309 }
310
311 #endif // QT_NO_QWS_DECORATION_STYLED
312
313 QT_END_NAMESPACE
314