* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <algorithm>
+#include <QApplication>
+#include <QMouseEvent>
#include "rowitem.hpp"
-#include "timeitem.hpp"
#include "view.hpp"
#include "viewwidget.hpp"
ViewWidget::ViewWidget(View &parent) :
QWidget(&parent),
- view_(parent)
+ view_(parent),
+ dragging_(false)
{
+ setFocusPolicy(Qt::ClickFocus);
+ setMouseTracking(true);
+}
+
+void ViewWidget::clear_selection()
+{
+ const auto items = this->items();
+ for (auto &i : items)
+ i->select(false);
+ update();
+}
+
+void ViewWidget::item_clicked(const shared_ptr<ViewItem> &item)
+{
+ (void)item;
}
bool ViewWidget::accept_drag() const
i->drag_by(delta);
}
+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
+ const auto items = this->items();
+ for (auto &i : items)
+ if (i->selected())
+ i->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 (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_);
+ }
+ }
+
+ dragging_ = false;
+}
+
+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_item_ = nullptr;
+}
+
+void ViewWidget::mouseMoveEvent(QMouseEvent *event)
+{
+ assert(event);
+ mouse_point_ = event->pos();
+
+ if (!(event->buttons() & Qt::LeftButton))
+ return;
+
+ if ((event->pos() - mouse_down_point_).manhattanLength() <
+ QApplication::startDragDistance())
+ return;
+
+ if (!accept_drag())
+ return;
+
+ // Do the drag
+ dragging_ = true;
+ drag_items(event->pos() - mouse_down_point_);
+
+ update();
+}
+
+void ViewWidget::leaveEvent(QEvent*)
+{
+ mouse_point_ = QPoint(-1, -1);
+ update();
+}
+
} // namespace view
} // namespace pv