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New event filter class to manage the tab switching of a tabBar during a drag&drop
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r886:28af007d2663
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@@ -0,0 +1,29
1 #ifndef SCIQLOP_DRAGDROPTABSWITCHER_H
2 #define SCIQLOP_DRAGDROPTABSWITCHER_H
3
4 #include <Common/spimpl.h>
5
6 #include <QLoggingCategory>
7 #include <QTabBar>
8
9 Q_DECLARE_LOGGING_CATEGORY(LOG_DragDropTabSwitcher)
10
11 class DragDropTabSwitcher : public QObject {
12 Q_OBJECT
13
14 public:
15 DragDropTabSwitcher(QObject *parent = nullptr);
16
17 void addTabBar(QTabBar *tabBar);
18 void removeTabBar(QTabBar *tabBar);
19
20 protected:
21 bool eventFilter(QObject *obj, QEvent *event);
22
23 private:
24 class DragDropTabSwitcherPrivate;
25 spimpl::unique_impl_ptr<DragDropTabSwitcherPrivate> impl;
26 };
27
28
29 #endif // SCIQLOP_DRAGDROPTABSWITCHER_H
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@@ -0,0 +1,180
1 #include "DragAndDrop/DragDropTabSwitcher.h"
2
3 #include <QAbstractButton>
4 #include <QDragEnterEvent>
5 #include <QDragMoveEvent>
6 #include <QTimer>
7
8 #include "SqpApplication.h"
9
10 Q_LOGGING_CATEGORY(LOG_DragDropTabSwitcher, "DragDropTabSwitcher")
11
12 const int CHANGE_TAB_INTERVAL = 400; // time necessary over a tab to accept the switch
13 const int SCROLL_BUTTON_AUTO_CLICK_INTERVAL
14 = 500; // time between 2 auto clicks on a scroll button of the tab bar
15
16 struct DragDropTabSwitcher::DragDropTabSwitcherPrivate {
17
18 QList<QTabBar *> m_TabBarList;
19 QTabBar *m_CurrentTabBar = nullptr;
20
21 int m_HoveredTabIndex = -1;
22 std::unique_ptr<QTimer> m_TabSwitchTimer = nullptr;
23
24 QAbstractButton *m_HoveredScrollButton = nullptr;
25 std::unique_ptr<QTimer> m_ScrollButtonsTimer = nullptr;
26
27 explicit DragDropTabSwitcherPrivate()
28 : m_TabSwitchTimer{std::make_unique<QTimer>()},
29 m_ScrollButtonsTimer{std::make_unique<QTimer>()}
30 {
31 m_TabSwitchTimer->setSingleShot(true);
32 m_TabSwitchTimer->setInterval(CHANGE_TAB_INTERVAL);
33 QObject::connect(m_TabSwitchTimer.get(), &QTimer::timeout, [this]() {
34 if (m_CurrentTabBar) {
35 m_CurrentTabBar->setCurrentIndex(m_HoveredTabIndex);
36 }
37 else {
38 qCWarning(LOG_DragDropTabSwitcher()) << "DragDropTabSwitcherPrivate::timeout: "
39 "Cannot select a new tab: unknown current "
40 "tab bar.";
41 }
42 });
43
44 m_ScrollButtonsTimer->setInterval(SCROLL_BUTTON_AUTO_CLICK_INTERVAL);
45 QObject::connect(m_ScrollButtonsTimer.get(), &QTimer::timeout, [this]() {
46 if (m_HoveredScrollButton) {
47 m_HoveredScrollButton->animateClick();
48 }
49 else {
50 qCWarning(LOG_DragDropTabSwitcher())
51 << "DragDropTabSwitcherPrivate::timeoutScroll: "
52 "Unknown scroll button";
53 }
54 });
55 }
56
57 bool isScrollTabButton(QAbstractButton *button, QTabBar *tabBar)
58 {
59 auto isNextOrPreviousTabButton = true;
60
61 if (tabBar->isAncestorOf(button)) {
62 for (auto i = 0; i < tabBar->count(); ++i) {
63 if (tabBar->tabButton(i, QTabBar::RightSide) == button
64 || tabBar->tabButton(i, QTabBar::LeftSide) == button) {
65 isNextOrPreviousTabButton = false;
66 break;
67 }
68 }
69 }
70 else {
71 isNextOrPreviousTabButton = false;
72 }
73
74 return isNextOrPreviousTabButton;
75 }
76
77 QAbstractButton *tabScrollButtonAt(const QPoint &pos, QTabBar *tabBar)
78 {
79
80 auto globalPos = tabBar->mapToGlobal(pos);
81
82 auto widgetUnderMouse = sqpApp->widgetAt(globalPos);
83 if (auto btn = qobject_cast<QAbstractButton *>(widgetUnderMouse)) {
84
85 if (isScrollTabButton(btn, tabBar)) {
86 return btn;
87 }
88 }
89
90 return nullptr;
91 }
92 };
93
94 DragDropTabSwitcher::DragDropTabSwitcher(QObject *parent)
95 : QObject(parent), impl{spimpl::make_unique_impl<DragDropTabSwitcherPrivate>()}
96 {
97 }
98
99 void DragDropTabSwitcher::addTabBar(QTabBar *tabBar)
100 {
101 impl->m_TabBarList << tabBar;
102 tabBar->setAcceptDrops(true);
103 }
104
105 void DragDropTabSwitcher::removeTabBar(QTabBar *tabBar)
106 {
107 impl->m_TabBarList.removeAll(tabBar);
108 tabBar->setAcceptDrops(false);
109 }
110
111 bool DragDropTabSwitcher::eventFilter(QObject *obj, QEvent *event)
112 {
113 if (event->type() == QEvent::DragMove) {
114
115 if (impl->m_CurrentTabBar) {
116
117 QWidget *w = static_cast<QWidget *>(obj);
118 if (!impl->m_CurrentTabBar->isAncestorOf(w)) {
119 return false;
120 }
121
122 auto moveEvent = static_cast<QDragMoveEvent *>(event);
123
124 auto scrollButton = impl->tabScrollButtonAt(moveEvent->pos(), impl->m_CurrentTabBar);
125
126 if (!scrollButton) {
127
128 auto tabIndex = impl->m_CurrentTabBar->tabAt(moveEvent->pos());
129 if (tabIndex >= 0 && tabIndex != impl->m_CurrentTabBar->currentIndex()) {
130 // The mouse is over an unselected tab
131 if (!impl->m_TabSwitchTimer->isActive()
132 || tabIndex != impl->m_HoveredTabIndex) {
133 impl->m_HoveredTabIndex = tabIndex;
134 impl->m_TabSwitchTimer->start();
135 }
136 else {
137 // do nothing, timer already running
138 }
139 }
140 else {
141 impl->m_TabSwitchTimer->stop();
142 }
143
144 impl->m_ScrollButtonsTimer->stop();
145 }
146 else {
147 // The mouse is over a scroll button
148 // click it in a loop with a timer
149 if (!impl->m_ScrollButtonsTimer->isActive()
150 || impl->m_HoveredScrollButton != scrollButton) {
151 impl->m_HoveredScrollButton = scrollButton;
152 impl->m_ScrollButtonsTimer->start();
153 }
154 }
155 }
156 }
157 else if (event->type() == QEvent::DragEnter) {
158 QWidget *w = static_cast<QWidget *>(obj);
159
160 for (auto tabBar : impl->m_TabBarList) {
161 if (w == tabBar) {
162 auto enterEvent = static_cast<QDragEnterEvent *>(event);
163 enterEvent->acceptProposedAction();
164 enterEvent->setDropAction(Qt::IgnoreAction);
165 impl->m_CurrentTabBar = tabBar;
166 break;
167 }
168 }
169 }
170 else if (event->type() == QEvent::DragLeave || event->type() == QEvent::Drop) {
171 if (impl->m_CurrentTabBar) {
172 impl->m_HoveredTabIndex = -1;
173 impl->m_TabSwitchTimer->stop();
174 impl->m_CurrentTabBar = nullptr;
175 impl->m_ScrollButtonsTimer->stop();
176 }
177 }
178
179 return false;
180 }
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@@ -7,6 +7,7
7 7
8 8 class QVBoxLayout;
9 9 class QScrollArea;
10 class QTabBar;
10 11 class VisualizationDragWidget;
11 12 class VisualizationDragDropContainer;
12 13 class QMimeData;
@@ -54,6 +55,9 public:
54 55 void addDragDropScrollArea(QScrollArea *scrollArea);
55 56 void removeDragDropScrollArea(QScrollArea *scrollArea);
56 57
58 void addDragDropTabBar(QTabBar *tabBar);
59 void removeDragDropTabBar(QTabBar *tabBar);
60
57 61 QUrl imageTemporaryUrl(const QImage &image) const;
58 62
59 63 void setHightlightedDragWidget(VisualizationDragWidget *dragWidget);
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@@ -8,6 +8,7 gui_moc_headers = [
8 8 'include/SqpApplication.h',
9 9 'include/DragAndDrop/DragDropHelper.h',
10 10 'include/DragAndDrop/DragDropScroller.h',
11 'include/DragAndDrop/DragDropTabSwitcher.h',
11 12 'include/TimeWidget/TimeWidget.h',
12 13 'include/Variable/VariableInspectorWidget.h',
13 14 'include/Variable/VariableInspectorTableView.h',
@@ -46,6 +47,7 gui_sources = [
46 47 'src/SqpApplication.cpp',
47 48 'src/DragAndDrop/DragDropHelper.cpp',
48 49 'src/DragAndDrop/DragDropScroller.cpp',
50 'src/DragAndDrop/DragDropTabSwitcher.cpp',
49 51 'src/Common/ColorUtils.cpp',
50 52 'src/Common/VisualizationDef.cpp',
51 53 'src/DataSource/DataSourceTreeWidgetItem.cpp',
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@@ -1,5 +1,6
1 1 #include "DragAndDrop/DragDropHelper.h"
2 2 #include "DragAndDrop/DragDropScroller.h"
3 #include "DragAndDrop/DragDropTabSwitcher.h"
3 4 #include "SqpApplication.h"
4 5 #include "Visualization/VisualizationDragDropContainer.h"
5 6 #include "Visualization/VisualizationDragWidget.h"
@@ -18,7 +19,7
18 19 #include <QVBoxLayout>
19 20
20 21
21 Q_LOGGING_CATEGORY(LOG_DragDropHelper, "DragDrophelper")
22 Q_LOGGING_CATEGORY(LOG_DragDropHelper, "DragDropHelper")
22 23
23 24
24 25 struct DragDropHelper::DragDropHelperPrivate {
@@ -28,6 +29,7 struct DragDropHelper::DragDropHelperPrivate {
28 29 QLabel *m_PlaceHolderLabel;
29 30 QWidget *m_PlaceBackground;
30 31 std::unique_ptr<DragDropScroller> m_DragDropScroller = nullptr;
32 std::unique_ptr<DragDropTabSwitcher> m_DragDropTabSwitcher = nullptr;
31 33 QString m_ImageTempUrl; // Temporary file for image url generated by the drag & drop. Not using
32 34 // QTemporaryFile to have a name which is not generated.
33 35
@@ -38,7 +40,8 struct DragDropHelper::DragDropHelperPrivate {
38 40
39 41 explicit DragDropHelperPrivate()
40 42 : m_PlaceHolder{std::make_unique<QWidget>()},
41 m_DragDropScroller{std::make_unique<DragDropScroller>()}
43 m_DragDropScroller{std::make_unique<DragDropScroller>()},
44 m_DragDropTabSwitcher{std::make_unique<DragDropTabSwitcher>()}
42 45 {
43 46
44 47 auto layout = new QVBoxLayout{m_PlaceHolder.get()};
@@ -54,6 +57,7 struct DragDropHelper::DragDropHelperPrivate {
54 57 layout->addWidget(m_PlaceBackground);
55 58
56 59 sqpApp->installEventFilter(m_DragDropScroller.get());
60 sqpApp->installEventFilter(m_DragDropTabSwitcher.get());
57 61
58 62 m_ImageTempUrl = QDir::temp().absoluteFilePath("Sciqlop_graph.png");
59 63 }
@@ -165,6 +169,16 void DragDropHelper::removeDragDropScrollArea(QScrollArea *scrollArea)
165 169 impl->m_DragDropScroller->removeScrollArea(scrollArea);
166 170 }
167 171
172 void DragDropHelper::addDragDropTabBar(QTabBar *tabBar)
173 {
174 impl->m_DragDropTabSwitcher->addTabBar(tabBar);
175 }
176
177 void DragDropHelper::removeDragDropTabBar(QTabBar *tabBar)
178 {
179 impl->m_DragDropTabSwitcher->removeTabBar(tabBar);
180 }
181
168 182 QUrl DragDropHelper::imageTemporaryUrl(const QImage &image) const
169 183 {
170 184 image.save(impl->m_ImageTempUrl);
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@@ -11,6 +11,9
11 11
12 12 #include "ui_VisualizationWidget.h"
13 13
14 #include "DragAndDrop/DragDropHelper.h"
15 #include "SqpApplication.h"
16
14 17 #include <QToolButton>
15 18
16 19 Q_LOGGING_CATEGORY(LOG_VisualizationWidget, "VisualizationWidget")
@@ -67,12 +70,15 VisualizationWidget::VisualizationWidget(QWidget *parent)
67 70 connect(addTabViewButton, &QToolButton::clicked, addTabView);
68 71 connect(ui->tabWidget, &QTabWidget::tabCloseRequested, removeTabView);
69 72
73 sqpApp->dragDropHelper().addDragDropTabBar(ui->tabWidget->tabBar());
74
70 75 // Adds default tab
71 76 addTabView();
72 77 }
73 78
74 79 VisualizationWidget::~VisualizationWidget()
75 80 {
81 sqpApp->dragDropHelper().removeDragDropTabBar(ui->tabWidget->tabBar());
76 82 delete ui;
77 83 }
78 84
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