110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/*
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* Oak Video Editor - Non-Linear Video Editor
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* Copyright (C) 2025 Olive CE Team
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*
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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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*
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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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*
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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 "widget/timelinewidget/timelinewidget.h"
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#include "zoom.h"
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namespace olive
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{
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ZoomTool::ZoomTool(TimelineWidget *parent)
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: TimelineTool(parent)
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{
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}
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void ZoomTool::MousePress(TimelineViewMouseEvent *event)
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{
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Q_UNUSED(event)
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drag_global_start_ = QCursor::pos();
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}
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void ZoomTool::MouseMove(TimelineViewMouseEvent *event)
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{
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Q_UNUSED(event)
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if (!dragging_) {
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parent()->StartRubberBandSelect(drag_global_start_);
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dragging_ = true;
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}
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parent()->MoveRubberBandSelect(false, false);
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}
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void ZoomTool::MouseRelease(TimelineViewMouseEvent *event)
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{
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int scroll_value;
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if (dragging_) {
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// Zoom into the rubberband selection
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QRect screen_coords = parent()->GetRubberBandGeometry();
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parent()->EndRubberBandSelect();
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TimelineView *reference_view = parent()->GetFirstTimelineView();
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QPointF scene_topleft = reference_view->mapToScene(
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reference_view->mapFrom(parent(), screen_coords.topLeft()));
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QPointF scene_bottomright = reference_view->mapToScene(
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reference_view->mapFrom(parent(), screen_coords.bottomRight()));
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double scene_left = scene_topleft.x();
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double scene_right = scene_bottomright.x();
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// Normalize scale to 1.0 scale
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double scene_width = (scene_right - scene_left) / parent()->GetScale();
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double new_scale =
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qMin(parent()->GetFirstTimelineView()->GetMaximumScale(),
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static_cast<double>(reference_view->viewport()->width()) /
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scene_width);
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parent()->SetScale(new_scale);
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scroll_value =
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qMax(0, qRound(scene_left / parent()->GetScale() * new_scale));
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dragging_ = false;
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} else {
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// Simple zoom in/out at the cursor position
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double scale = parent()->GetScale();
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if (event->GetModifiers() & Qt::AltModifier) {
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// Zoom out if the user clicks while holding Alt
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scale *= 0.5;
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} else {
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// Otherwise zoom in
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scale *= 2.0;
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}
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parent()->SetScale(scale);
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// Adjust scroll location for new scale
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double frame_x = event->GetFrame().toDouble() * scale;
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scroll_value = qMax(
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0,
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qRound(frame_x -
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parent()->GetFirstTimelineView()->viewport()->width() / 2));
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}
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parent()->QueueScroll(scroll_value);
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}
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}
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