Added ViewWidget as a common ancestor of all view widgets

[pulseview.git] / pv / view / marginwidget.cpp

diff --git a/pv/view/marginwidget.cpp b/pv/view/marginwidget.cpp
index 179e82b9f7f9c63084f104061059163d2370c354..fcbb31bf0174bb1944286005b11d0d978d715126 100644 (file)
--- a/pv/view/marginwidget.cpp
+++ b/pv/view/marginwidget.cpp
@@ -18,22 +18,177 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-#include "view.h"
+#include <QApplication>
+#include <QMenu>
+#include <QMouseEvent>
 
-#include "marginwidget.h"
+#include "view.hpp"
+
+#include "marginwidget.hpp"
+
+#include <pv/widgets/popup.hpp>
+
+using std::shared_ptr;
 
 namespace pv {
 namespace view {
 
 MarginWidget::MarginWidget(View &parent) :
-       QWidget(&parent),
-       view_(parent)
+       ViewWidget(parent),
+       dragging_(false)
 {
        setAttribute(Qt::WA_NoSystemBackground, true);
+       setFocusPolicy(Qt::ClickFocus);
+       setMouseTracking(true);
+}
+
+void MarginWidget::show_popup(const shared_ptr<ViewItem> &item)
+{
+       pv::widgets::Popup *const p = item->create_popup(this);
+       if (p)
+               p->show();
+}
+
+void MarginWidget::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 MarginWidget::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_)
+                               show_popup(mouse_down_item_);
+               }
+       }
+
+       dragging_ = false;
+}
+
+void MarginWidget::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 MarginWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+       assert(event);
+       if (event->button() & Qt::LeftButton)
+               mouse_left_release_event(event);
+
+       mouse_down_item_ = nullptr;
+}
+
+void MarginWidget::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 MarginWidget::leaveEvent(QEvent*)
+{
+       mouse_point_ = QPoint(-1, -1);
+       update();
+}
+
+void MarginWidget::contextMenuEvent(QContextMenuEvent *event)
+{
+       const shared_ptr<ViewItem> r = get_mouse_over_item(mouse_point_);
+       if (!r)
+               return;
+
+       QMenu *menu = r->create_context_menu(this);
+       if (menu)
+               menu->exec(event->globalPos());
+}
+
+void MarginWidget::keyPressEvent(QKeyEvent *e)
+{
+       assert(e);
+
+       if (e->key() == Qt::Key_Delete)
+       {
+               const auto items = this->items();
+               for (auto &i : items)
+                       if (i->selected())
+                               i->delete_pressed();
+       }
 }
 
 void MarginWidget::clear_selection()
 {
+       const auto items = this->items();
+       for (auto &i : items)
+               i->select(false);
+       update();
 }
 
 } // namespace view