102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2022 Olive Team
|
|
|
|
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 3 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 "widget/timelinewidget/timelinewidget.h"
|
|
#include "zoom.h"
|
|
|
|
namespace olive {
|
|
|
|
ZoomTool::ZoomTool(TimelineWidget *parent) :
|
|
TimelineTool(parent)
|
|
{
|
|
}
|
|
|
|
void ZoomTool::MousePress(TimelineViewMouseEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
drag_global_start_ = QCursor::pos();
|
|
}
|
|
|
|
void ZoomTool::MouseMove(TimelineViewMouseEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
if (!dragging_) {
|
|
parent()->StartRubberBandSelect(drag_global_start_);
|
|
|
|
dragging_ = true;
|
|
}
|
|
|
|
parent()->MoveRubberBandSelect(false, false);
|
|
}
|
|
|
|
void ZoomTool::MouseRelease(TimelineViewMouseEvent *event)
|
|
{
|
|
int scroll_value;
|
|
|
|
if (dragging_) {
|
|
// Zoom into the rubberband selection
|
|
QRect screen_coords = parent()->GetRubberBandGeometry();
|
|
|
|
parent()->EndRubberBandSelect();
|
|
|
|
TimelineView* reference_view = parent()->GetFirstTimelineView();
|
|
QPointF scene_topleft = reference_view->mapToScene(reference_view->mapFrom(parent(), screen_coords.topLeft()));
|
|
QPointF scene_bottomright = reference_view->mapToScene(reference_view->mapFrom(parent(), screen_coords.bottomRight()));
|
|
|
|
double scene_left = scene_topleft.x();
|
|
double scene_right = scene_bottomright.x();
|
|
|
|
// Normalize scale to 1.0 scale
|
|
double scene_width = (scene_right - scene_left) / parent()->GetScale();
|
|
|
|
double new_scale = qMin(parent()->GetFirstTimelineView()->GetMaximumScale(), static_cast<double>(reference_view->viewport()->width()) / scene_width);
|
|
|
|
parent()->SetScale(new_scale);
|
|
|
|
scroll_value = qMax(0, qRound(scene_left / parent()->GetScale() * new_scale));
|
|
|
|
dragging_ = false;
|
|
} else {
|
|
// Simple zoom in/out at the cursor position
|
|
double scale = parent()->GetScale();
|
|
|
|
if (event->GetModifiers() & Qt::AltModifier) {
|
|
// Zoom out if the user clicks while holding Alt
|
|
scale *= 0.5;
|
|
} else {
|
|
// Otherwise zoom in
|
|
scale *= 2.0;
|
|
}
|
|
|
|
parent()->SetScale(scale);
|
|
|
|
// Adjust scroll location for new scale
|
|
double frame_x = event->GetFrame().toDouble() * scale;
|
|
|
|
scroll_value = qMax(0, qRound(frame_x - parent()->GetFirstTimelineView()->viewport()->width()/2));
|
|
}
|
|
|
|
parent()->QueueScroll(scroll_value);
|
|
}
|
|
|
|
}
|