X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewwidget.cpp;h=e364d6385f61eb9768b5b0afc9995adda4840bee;hp=9c4c56ff6f0e50d20f1ec3839ee9b4b8ebbc6f30;hb=e8b969a9ae4e0a683eabddc8ded7babaf03844fd;hpb=1dffa582704bb6acb144a3e89bd6eb0e2ccf4f25

diff --git a/pv/view/viewwidget.cpp b/pv/view/viewwidget.cpp
index 9c4c56ff..e364d638 100644
--- a/pv/view/viewwidget.cpp
+++ b/pv/view/viewwidget.cpp
@@ -18,10 +18,11 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include <algorithm>
+#include <QApplication>
+#include <QMouseEvent>
+#include <QTouchEvent>
 
 #include "rowitem.hpp"
-#include "timeitem.hpp"
 #include "view.hpp"
 #include "viewwidget.hpp"
 
@@ -34,8 +35,30 @@ namespace view {
 
 ViewWidget::ViewWidget(View &parent) :
 	QWidget(&parent),
-	view_(parent)
+	view_(parent),
+	item_dragging_(false)
 {
+	setFocusPolicy(Qt::ClickFocus);
+	setAttribute(Qt::WA_AcceptTouchEvents, true);
+	setMouseTracking(true);
+}
+
+void ViewWidget::clear_selection()
+{
+	const auto items = this->items();
+	for (auto &i : items)
+		i->select(false);
+	update();
+}
+
+void ViewWidget::item_hover(const shared_ptr<ViewItem> &item)
+{
+	(void)item;
+}
+
+void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item)
+{
+	(void)item;
 }
 
 bool ViewWidget::accept_drag() const
@@ -67,11 +90,20 @@ bool ViewWidget::accept_drag() const
 		return true;
 	}
 
-	return false;
+	// A background drag is beginning
+	return true;
+}
+
+bool ViewWidget::mouse_down() const
+{
+	return mouse_down_point_.x() != INT_MIN &&
+		mouse_down_point_.y() != INT_MIN;
 }
 
 void ViewWidget::drag_items(const QPoint &delta)
 {
+	bool item_dragged = false;
+
 	// Drag the row items
 	RowItemOwner *item_owner = nullptr;
 	for (std::shared_ptr<RowItem> r : view_)
@@ -84,6 +116,7 @@ void ViewWidget::drag_items(const QPoint &delta)
 		}
 
 	if (item_owner) {
+		item_dragged = true;
 		item_owner->restack_items();
 		for (const auto &r : *item_owner)
 			r->animate_to_layout_v_offset();
@@ -92,8 +125,174 @@ void ViewWidget::drag_items(const QPoint &delta)
 	// Drag the time items
 	const vector< shared_ptr<TimeItem> > items(view_.time_items());
 	for (auto &i : items)
-		if (i->dragging())
+		if (i->dragging()) {
 			i->drag_by(delta);
+			item_dragged = true;
+		}
+
+	// Do the background drag
+	if (!item_dragged)
+		drag_by(delta);
+}
+
+void ViewWidget::drag()
+{
+}
+
+void ViewWidget::drag_by(const QPoint &delta)
+{
+	(void)delta;
+}
+
+void ViewWidget::drag_release()
+{
+}
+
+void ViewWidget::mouse_left_press_event(QMouseEvent *event)
+{
+	(void)event;
+
+	const bool ctrl_pressed =
+		QApplication::keyboardModifiers() & Qt::ControlModifier;
+
+	// Clear selection if control is not pressed and this item is unselected
+	if ((!mouse_down_item_ || !mouse_down_item_->selected()) &&
+		!ctrl_pressed)
+		clear_selection();
+
+	// Set the signal selection state if the item has been clicked
+	if (mouse_down_item_) {
+		if (ctrl_pressed)
+			mouse_down_item_->select(!mouse_down_item_->selected());
+		else
+			mouse_down_item_->select(true);
+	}
+
+	// Save the offsets of any signals which will be dragged
+	bool item_dragged = false;
+	const auto items = this->items();
+	for (auto &i : items)
+		if (i->selected()) {
+			item_dragged = true;
+			i->drag();
+		}
+
+	// Do the background drag
+	if (!item_dragged)
+		drag();
+
+	selection_changed();
+	update();
+}
+
+void ViewWidget::mouse_left_release_event(QMouseEvent *event)
+{
+	assert(event);
+
+	auto items = this->items();
+	const bool ctrl_pressed =
+		QApplication::keyboardModifiers() & Qt::ControlModifier;
+
+	// Unselect everything if control is not pressed
+	const shared_ptr<ViewItem> mouse_over =
+		get_mouse_over_item(event->pos());
+
+	for (auto &i : items)
+		i->drag_release();
+
+	if (item_dragging_)
+		view_.restack_all_row_items();
+	else
+	{
+		if (!ctrl_pressed) {
+			for (shared_ptr<ViewItem> i : items)
+				if (mouse_down_item_ != i)
+					i->select(false);
+
+			if (mouse_down_item_)
+				item_clicked(mouse_down_item_);
+		}
+	}
+
+	item_dragging_ = false;
+}
+
+bool ViewWidget::touch_event(QTouchEvent *e)
+{
+	(void)e;
+	return false;
+}
+
+bool ViewWidget::event(QEvent *event)
+{
+	switch (event->type()) {
+	case QEvent::TouchBegin:
+	case QEvent::TouchUpdate:
+	case QEvent::TouchEnd:
+		if (touch_event(static_cast<QTouchEvent *>(event)))
+			return true;
+		break;
+
+	default:
+		break;
+	}
+
+	return QWidget::event(event);
+}
+
+void ViewWidget::mousePressEvent(QMouseEvent *event)
+{
+	assert(event);
+
+	mouse_down_point_ = event->pos();
+	mouse_down_item_ = get_mouse_over_item(event->pos());
+
+	if (event->button() & Qt::LeftButton)
+		mouse_left_press_event(event);
+}
+
+void ViewWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+	assert(event);
+	if (event->button() & Qt::LeftButton)
+		mouse_left_release_event(event);
+
+	mouse_down_point_ = QPoint(INT_MIN, INT_MIN);
+	mouse_down_item_ = nullptr;
+}
+
+void ViewWidget::mouseMoveEvent(QMouseEvent *e)
+{
+	assert(e);
+	mouse_point_ = e->pos();
+
+	if (!e->buttons())
+		item_hover(get_mouse_over_item(e->pos()));
+	else if (e->buttons() & Qt::LeftButton)
+	{
+		if (!item_dragging_)
+		{
+			if ((e->pos() - mouse_down_point_).manhattanLength() <
+				QApplication::startDragDistance())
+				return;
+
+			if (!accept_drag())
+				return;
+
+			item_dragging_ = true;
+		}
+
+		// Do the drag
+		drag_items(e->pos() - mouse_down_point_);
+
+		update();
+	}
+}
+
+void ViewWidget::leaveEvent(QEvent*)
+{
+	mouse_point_ = QPoint(-1, -1);
+	update();
 }
 
 } // namespace view