1/*
2 This file is part of the KDE project.
3
4 Copyright (c) 2011 Lionel Chauvin <megabigbug@yahoo.fr>
5 Copyright (c) 2011,2012 Cédric Bellegarde <gnumdk@gmail.com>
6
7 Permission is hereby granted, free of charge, to any person obtaining a
8 copy of this software and associated documentation files (the "Software"),
9 to deal in the Software without restriction, including without limitation
10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 and/or sell copies of the Software, and to permit persons to whom the
12 Software is furnished to do so, subject to the following conditions:
13
14 The above copyright notice and this permission notice shall be included in
15 all copies or substantial portions of the Software.
16
17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 DEALINGS IN THE SOFTWARE.
24*/
25
26#include "menubar.h"
27#include "shadows.h"
28
29#include <QGraphicsLinearLayout>
30#include <QPainter>
31#include <QMenu>
32#include <QDesktopWidget>
33#include <QGraphicsDropShadowEffect>
34
35#include <KWindowSystem>
36#include <Plasma/FrameSvg>
37#include <Plasma/Theme>
38#include <Plasma/WindowEffects>
39#include <KApplication>
40
41MenuBar::MenuBar()
42 : QGraphicsView(),
43 m_hideTimer(new QTimer(this)),
44 m_background(new Plasma::FrameSvg(this)),
45 m_shadows(new Shadows(this)),
46 m_scene(new QGraphicsScene(this)),
47 m_container(new MenuWidget(this))
48{
49 qreal left, top, right, bottom;
50
51 //Setup the window properties
52 setWindowFlags(Qt::Tool|Qt::X11BypassWindowManagerHint|Qt::WindowStaysOnTopHint);
53 setAttribute(Qt::WA_TranslucentBackground);
54 KWindowSystem::setType(winId(), NET::Dock);
55 setFrameStyle(QFrame::NoFrame);
56 viewport()->setAutoFillBackground(false);
57 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
58 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
59
60 //Setup the widgets
61 m_background->setImagePath("widgets/tooltip");
62 m_background->setEnabledBorders(Plasma::FrameSvg::BottomBorder|Plasma::FrameSvg::LeftBorder|Plasma::FrameSvg::RightBorder);
63
64 m_container->initLayout();
65
66 m_scene->addItem(m_container);
67
68 setScene(m_scene);
69
70 m_background->getMargins(left, top, right, bottom);
71 m_container->layout()->setContentsMargins(left, top, right, bottom);
72
73 resize(sizeHint());
74
75 connect(m_container, SIGNAL(aboutToHide()), this, SLOT(slotAboutToHide()));
76 connect(m_container, SIGNAL(needResize()), this, SIGNAL(needResize()));
77 connect(m_hideTimer, SIGNAL(timeout()), this, SLOT(slotAboutToHide()));
78
79 connect(KWindowSystem::self(), SIGNAL(compositingChanged(bool)), this, SLOT(slotCompositingChanged(bool)));
80}
81
82MenuBar::~MenuBar()
83{
84}
85
86QSize MenuBar::sizeHint() const
87{
88 QSizeF size = m_container->minimumSize();
89 return QSize(size.width(), size.height() - m_container->contentBottomMargin());
90}
91
92void MenuBar::show()
93{
94 // Add shadow for better readability
95 if (! Plasma::WindowEffects::isEffectAvailable(Plasma::WindowEffects::BlurBehind)) {
96 QGraphicsDropShadowEffect *shadow = new QGraphicsDropShadowEffect();
97 shadow->setBlurRadius(5);
98 shadow->setOffset(QPointF(1, 1));
99 shadow->setColor(Plasma::Theme::defaultTheme()->color(Plasma::Theme::BackgroundColor));
100 setGraphicsEffect(shadow);
101 } else {
102 setGraphicsEffect(0);
103 }
104 m_hideTimer->start(1000);
105 QGraphicsView::show();
106
107}
108
109void MenuBar::hide()
110{
111 emit aboutToHide();
112 m_hideTimer->stop();
113 QGraphicsView::hide();
114}
115
116void MenuBar::slotAboutToHide()
117{
118 if (m_container->aMenuIsVisible()) { // MenuBar::m_hideTimer
119 m_hideTimer->stop(); // menu is visible, menubar will be hidden by another aboutToHide() signal
120 }
121 else if (!cursorInMenuBar()) { //MenuWidget::AboutToHide signal
122 hide();
123 } else if (!m_hideTimer->isActive()){ //use click on menubar button while a popup was shown
124 m_hideTimer->start(1000);
125 }
126}
127
128void MenuBar::slotCompositingChanged(bool)
129{
130 updateMask();
131}
132
133bool MenuBar::cursorInMenuBar()
134{
135 return QRect(pos(), size()).contains(QCursor::pos());
136}
137
138void MenuBar::drawBackground(QPainter *painter, const QRectF &/*rectF*/)
139{
140 painter->save();
141 painter->setCompositionMode(QPainter::CompositionMode_Source);
142 m_background->paintFrame(painter);
143 painter->restore();
144}
145
146void MenuBar::resizeEvent(QResizeEvent*)
147{
148 m_background->resizeFrame(size());
149 m_scene->setSceneRect(0, 0, width(), height());
150 updateMask();
151}
152
153void MenuBar::updateMask()
154{
155 // Enable the mask only when compositing is disabled;
156 // As this operation is quite slow, it would be nice to find some
157 // way to workaround it for no-compositing users.
158 if (KWindowSystem::compositingActive()) {
159 clearMask();
160 Plasma::WindowEffects::overrideShadow(winId(), true);
161 Plasma::WindowEffects::enableBlurBehind(winId(), true, m_background->mask());
162 m_shadows->addWindow(this, Plasma::FrameSvg::BottomBorder|Plasma::FrameSvg::LeftBorder|Plasma::FrameSvg::RightBorder);
163 } else {
164 setMask(m_background->mask());
165 }
166}