Differential D4565 Diff 11223 app/ToolTips/tooltipmanager.cpp

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app/ToolTips/tooltipmanager.cpp

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16 * Free Software Foundation, Inc., * 16​ * Free Software Foundation, Inc., *
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * 17​ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
18 *******************************************************************************/ 18​ *******************************************************************************/
19 19​
20#include "tooltipmanager.h" 20​#include "tooltipmanager.h"
21 21​
22#include "MenuItem.h" 22​#include "MenuItem.h"
23 23​
24#include "ktooltip.h" ​
25 ​
26#include <QRect> 24​#include <QRect>
27#include <QLabel> 25​#include <QLabel>
28#include <QTimer> 26​#include <QTimer>
29#include <QScrollBar> 27​#include <QScrollBar>
30#include <QGridLayout> 28​#include <QGridLayout>
31#include <QApplication> 29​#include <QApplication>
32#include <QDesktopWidget> ​
33#include <QAbstractItemView> 30​#include <QAbstractItemView>
34 31​
35#include <KIconLoader> 32​#include <KIconLoader>
36#include <KColorScheme> 33​#include <KColorScheme>
37#include <KLocalizedString> 34​#include <KLocalizedString>
35​#include <KToolTipWidget>
38 36​
39class ToolTipManager::Private 37​class ToolTipManager::Private
40{ 38​{
41public: 39​public:
42 Private() : 40​ Private() :
41​ tooltip(0),
43 view(0), 42​ view(0),
44 timer(0) 43​ timer(0),
44​ delay(300)
45 { } 45​ { }
46 46​
47​ KToolTipWidget *tooltip;
47 QAbstractItemView* view; 48​ QAbstractItemView* view;
48 QTimer* timer; 49​ QTimer* timer;
49 QModelIndex item; 50​ QModelIndex item;
50 QRect itemRect; 51​ QRect itemRect;
52​ int delay;
51}; 53​};
52 54​
53ToolTipManager::ToolTipManager(QAbstractItemView* parent) 55​ToolTipManager::ToolTipManager(QAbstractItemView* parent)
54 : QObject(parent) 56​ : QObject(parent)
55 , d(new ToolTipManager::Private) 57​ , d(new ToolTipManager::Private)
56{ 58​{
57 d->view = parent; 59​ d->view = parent;
60​ d->tooltip = new KToolTipWidget(d->view);
61​ d->tooltip->setHideDelay(0);
58 62​
59 connect(parent, &QAbstractItemView::viewportEntered, this, &ToolTipManager::hideToolTip); 63​ connect(parent, &QAbstractItemView::viewportEntered, this, &ToolTipManager::hideToolTip);
60 connect(parent, &QAbstractItemView::entered, this, &ToolTipManager::requestToolTip); 64​ connect(parent, &QAbstractItemView::entered, this, &ToolTipManager::requestToolTip);
61 65​
62 d->timer = new QTimer(this); 66​ d->timer = new QTimer(this);
63 d->timer->setSingleShot(true); 67​ d->timer->setSingleShot(true);
64 connect(d->timer, &QTimer::timeout, this, &ToolTipManager::prepareToolTip); 68​ connect(d->timer, &QTimer::timeout, this, &ToolTipManager::prepareToolTip);
65 69​
66 // When the mousewheel is used, the items don't get a hovered indication 70​ // When the mousewheel is used, the items don't get a hovered indication
67 // (Qt-issue #200665). To assure that the tooltip still gets hidden, 71​ // (Qt-issue #200665). To assure that the tooltip still gets hidden,
68 // the scrollbars are observed. 72​ // the scrollbars are observed.
69 connect(parent->horizontalScrollBar(), &QAbstractSlider::valueChanged, this, &ToolTipManager::hideToolTip); 73​ connect(parent->horizontalScrollBar(), &QAbstractSlider::valueChanged, this, &ToolTipManager::hideToolTip);
70 connect(parent->verticalScrollBar(), &QAbstractSlider::valueChanged, this, &ToolTipManager::hideToolTip); 74​ connect(parent->verticalScrollBar(), &QAbstractSlider::valueChanged, this, &ToolTipManager::hideToolTip);
71 ​
72 d->view->viewport()->installEventFilter(this); ​
73} 75​}
74 76​
75ToolTipManager::~ToolTipManager() 77​ToolTipManager::~ToolTipManager()
76{ 78​{
77 delete d; 79​ delete d;
78} 80​}
79 81​
80bool ToolTipManager::eventFilter(QObject* watched, QEvent* event) ​
81{ ​
82 if ( watched == d->view->viewport() ) { ​
83 switch ( event->type() ) { ​
84 case QEvent::Leave: ​
85 case QEvent::MouseButtonPress: ​
86 hideToolTip(); ​
87 break; ​
88 case QEvent::ToolTip: ​
89 return true; ​
90 default: ​
91 break; ​
92 } ​
93 } ​
94 ​
95 return QObject::eventFilter(watched, event); ​
96} ​
97 ​
98void ToolTipManager::requestToolTip(const QModelIndex& index) 82​void ToolTipManager::requestToolTip(const QModelIndex& index)
99{ 83​{
100 // only request a tooltip for the name column and when no selection or 84​ // only request a tooltip for the name column and when no selection or
101 // drag & drop operation is done (indicated by the left mouse button) 85​ // drag & drop operation is done (indicated by the left mouse button)
102 if ( !(QApplication::mouseButtons() & Qt::LeftButton) ) { 86​ if ( !(QApplication::mouseButtons() & Qt::LeftButton) ) {
103 KToolTip::hideTip(); 87​ d->tooltip->hide();
104 88​
105 d->itemRect = d->view->visualRect(index); 89​ d->itemRect = d->view->visualRect(index);
106 const QPoint pos = d->view->viewport()->mapToGlobal(d->itemRect.topLeft()); 90​ const QPoint pos = d->view->viewport()->mapToGlobal(d->itemRect.topLeft());
107 d->itemRect.moveTo(pos); 91​ d->itemRect.moveTo(pos);
108 d->item = index; 92​ d->item = index;
109 d->timer->start(300); 93​ d->timer->start(d->delay);
110 } else { 94​ } else {
111 hideToolTip(); 95​ hideToolTip();
112 } 96​ }
113} 97​}
114 98​
115void ToolTipManager::hideToolTip() 99​void ToolTipManager::hideToolTip()
116{ 100​{
117 d->timer->stop(); 101​ d->timer->stop();
118 KToolTip::hideTip(); 102​ d->tooltip->hideLater();
119} 103​}
120 104​
121void ToolTipManager::prepareToolTip() 105​void ToolTipManager::prepareToolTip()
122{ 106​{
123 showToolTip( d->item ); 107​ showToolTip( d->item );
124} 108​}
125 109​
126void ToolTipManager::showToolTip( QModelIndex menuItem ) 110​void ToolTipManager::showToolTip( QModelIndex menuItem )
127{ 111​{
128 if (QApplication::mouseButtons() & Qt::LeftButton) { 112​ if (QApplication::mouseButtons() & Qt::LeftButton) {
129 return; 113​ return;
130 } 114​ }
131 115​
132 QWidget * tip = createTipContent( menuItem ); 116​ QWidget * tip = createTipContent( menuItem );
133 117​
134 // calculate the x- and y-position of the tooltip 118​ d->tooltip->showBelow(d->itemRect, tip, d->view->nativeParentWidget()->windowHandle());
135 const QSize size = tip->sizeHint(); ​
136 const QRect desktop = QApplication::desktop()->screenGeometry( d->itemRect.bottomRight() ); ​
137 ​
138 // d->itemRect defines the area of the item, where the tooltip should be ​
139 // shown. Per default the tooltip is shown in the bottom right corner. ​
140 // If the tooltip content exceeds the desktop borders, it must be assured that: ​
141 // - the content is fully visible ​
142 // - the content is not drawn inside d->itemRect ​
143 const int margin = 3; ​
144 const bool hasRoomToLeft = (d->itemRect.left() - size.width() - margin >= desktop.left()); ​
145 const bool hasRoomToRight = (d->itemRect.right() + size.width() + margin <= desktop.right()); ​
146 const bool hasRoomAbove = (d->itemRect.top() - size.height() - margin >= desktop.top()); ​
147 const bool hasRoomBelow = (d->itemRect.bottom() + size.height() + margin <= desktop.bottom()); ​
148 if (!hasRoomAbove && !hasRoomBelow && !hasRoomToLeft && !hasRoomToRight) { ​
149 delete tip; ​
150 tip = 0; ​
151 return; ​
152 } ​
153 ​
154 int x = 0; ​
155 int y = 0; ​
156 if (hasRoomBelow || hasRoomAbove) { ​
157 x = qMax(desktop.left(), d->itemRect.center().x() - size.width() / 2); ​
158 if (x + size.width() / 2 >= desktop.right()) { ​
159 x = desktop.right() - size.width(); ​
160 } ​
161 ​
162 y = hasRoomBelow ? d->itemRect.bottom() + margin : d->itemRect.top() - size.height() - margin; ​
163 } else { ​
164 Q_ASSERT(hasRoomToLeft || hasRoomToRight); ​
165 x = hasRoomToRight ? d->itemRect.right() + margin : d->itemRect.left() - size.width() - margin; ​
166 119​
167 // Put the tooltip at the bottom of the screen. The x-coordinate has already 120​ connect(d->tooltip, &KToolTipWidget::hidden, tip, &QObject::deleteLater);
168 // been adjusted, so that no overlapping with d->itemRect occurs. ​
169 y = desktop.bottom() - size.height(); ​
170 } ​
171 121​
172 // the ownership of tip is transferred to KToolTip ​
173 KToolTip::showTip(QPoint(x, y), tip, d->view->nativeParentWidget()->windowHandle()); ​
174} 122​}
175 123​
176QWidget * ToolTipManager::createTipContent( QModelIndex item ) 124​QWidget * ToolTipManager::createTipContent( QModelIndex item )
177{ 125​{
178 const QSize dialogIconSize = QSize(IconSize(KIconLoader::Dialog), IconSize(KIconLoader::Dialog)); 126​ const QSize dialogIconSize = QSize(IconSize(KIconLoader::Dialog), IconSize(KIconLoader::Dialog));
179 const QSize toolbarIconSize = QSize(IconSize(KIconLoader::MainToolbar), IconSize(KIconLoader::MainToolbar)); 127​ const QSize toolbarIconSize = QSize(IconSize(KIconLoader::MainToolbar), IconSize(KIconLoader::MainToolbar));
180 128​
181 QWidget * tipContent = new QWidget(); 129​ QWidget * tipContent = new QWidget();
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