+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <QApplication>
-#include <QMouseEvent>
-#include <QTouchEvent>
-
-#include "tracetreeitem.hpp"
-#include "view.hpp"
-#include "viewwidget.hpp"
-
-using std::any_of;
-using std::shared_ptr;
-using std::vector;
-
-namespace pv {
-namespace views {
-namespace TraceView {
-
-ViewWidget::ViewWidget(View &parent) :
- QWidget(&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);
-}
-
-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
-{
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
- view_.list_by_type<TraceTreeItem>());
-
- const bool any_row_items_selected = any_of(
- trace_tree_items.begin(), trace_tree_items.end(),
- [](const shared_ptr<TraceTreeItem> &r) { return r->selected(); });
-
- const bool any_time_items_selected = any_of(items.begin(), items.end(),
- [](const shared_ptr<TimeItem> &i) { return i->selected(); });
-
- if (any_row_items_selected && !any_time_items_selected) {
- // Check all the drag items share a common owner
- TraceTreeItemOwner *item_owner = nullptr;
- for (shared_ptr<TraceTreeItem> r : trace_tree_items)
- if (r->dragging()) {
- if (!item_owner)
- item_owner = r->owner();
- else if (item_owner != r->owner())
- return false;
- }
-
- return true;
- } else if (any_time_items_selected && !any_row_items_selected) {
- return true;
- }
-
- // 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
- const vector< shared_ptr<RowItem> > row_items(
- view_.list_by_type<RowItem>());
- for (shared_ptr<RowItem> r : row_items)
- if (r->dragging()) {
- r->drag_by(delta);
-
- // Ensure the trace is selected
- r->select();
-
- item_dragged = true;
- }
-
- // If an item is being dragged, update the stacking
- TraceTreeItemOwner *item_owner = nullptr;
- const vector< shared_ptr<TraceTreeItem> > trace_tree_items(
- view_.list_by_type<TraceTreeItem>());
- for (shared_ptr<TraceTreeItem> i : trace_tree_items)
- if (i->dragging())
- item_owner = i->owner();
-
- if (item_owner) {
- item_owner->restack_items();
- for (shared_ptr<TraceTreeItem> i : trace_tree_items)
- i->animate_to_layout_v_offset();
- }
-
- // Drag the time items
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- 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();
-}
-
-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_trace_tree_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 *event)
-{
- (void)event;
-
- 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);
-
- /* Ignore right click events as they will open context menus when
- * used on trace labels. Those menus prevent ViewWidget::mouseReleaseEvent()
- * to be triggered upon button release, making mouse_down_item_
- * hold the last reference to a view item that might have been deleted
- * from the context menu, preventing it from being freed as intended.
- */
- if (event->button() & Qt::LeftButton) {
- mouse_down_point_ = event->pos();
- mouse_down_item_ = get_mouse_over_item(event->pos());
- 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 *event)
-{
- assert(event);
- mouse_point_ = event->pos();
-
- if (!event->buttons())
- item_hover(get_mouse_over_item(event->pos()));
- else if (event->buttons() & Qt::LeftButton) {
- if (!item_dragging_) {
- if ((event->pos() - mouse_down_point_).manhattanLength() <
- QApplication::startDragDistance())
- return;
-
- if (!accept_drag())
- return;
-
- item_dragging_ = true;
- }
-
- // Do the drag
- drag_items(event->pos() - mouse_down_point_);
- }
-}
-
-void ViewWidget::leaveEvent(QEvent*)
-{
- mouse_point_ = QPoint(-1, -1);
- update();
-}
-
-} // namespace TraceView
-} // namespace views
-} // namespace pv
projects / pulseview.git / blobdiff