itsmattkc
8ab91a70cc
Includes splitting off this functionality from TimelineViewBase so it can be re-used in any QGraphicsView.
119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "handmovableview.h"
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#include <QMouseEvent>
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#include "core.h"
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OLIVE_NAMESPACE_ENTER
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HandMovableView::HandMovableView(QWidget* parent) :
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QGraphicsView(parent),
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dragging_hand_(false)
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{
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connect(Core::instance(), &Core::ToolChanged, this, &HandMovableView::ApplicationToolChanged);
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}
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void HandMovableView::ApplicationToolChanged(Tool::Item tool)
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{
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if (tool == Tool::kHand) {
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setDragMode(ScrollHandDrag);
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} else {
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setDragMode(default_drag_mode_);
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}
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ToolChangedEvent(tool);
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}
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bool HandMovableView::HandPress(QMouseEvent *event)
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{
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if (event->button() == Qt::MiddleButton) {
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pre_hand_drag_mode_ = dragMode();
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dragging_hand_ = true;
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setDragMode(ScrollHandDrag);
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// Transform mouse event to act like the left button is pressed
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QMouseEvent transformed(event->type(),
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event->localPos(),
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Qt::LeftButton,
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Qt::LeftButton,
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event->modifiers());
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QGraphicsView::mousePressEvent(&transformed);
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return true;
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}
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return false;
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}
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bool HandMovableView::HandMove(QMouseEvent *event)
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{
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if (dragging_hand_) {
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// Transform mouse event to act like the left button is pressed
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QMouseEvent transformed(event->type(),
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event->localPos(),
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Qt::LeftButton,
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Qt::LeftButton,
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event->modifiers());
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QGraphicsView::mouseMoveEvent(&transformed);
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}
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return dragging_hand_;
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}
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bool HandMovableView::HandRelease(QMouseEvent *event)
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{
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if (dragging_hand_) {
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// Transform mouse event to act like the left button is pressed
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QMouseEvent transformed(event->type(),
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event->localPos(),
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Qt::LeftButton,
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Qt::LeftButton,
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event->modifiers());
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QGraphicsView::mouseReleaseEvent(&transformed);
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setDragMode(pre_hand_drag_mode_);
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dragging_hand_ = false;
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return true;
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}
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return false;
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}
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void HandMovableView::SetDefaultDragMode(QGraphicsView::DragMode mode)
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{
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default_drag_mode_ = mode;
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setDragMode(default_drag_mode_);
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}
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const QGraphicsView::DragMode &HandMovableView::GetDefaultDragMode() const
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{
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return default_drag_mode_;
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}
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OLIVE_NAMESPACE_EXIT
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