134 lines
3.8 KiB
C++
134 lines
3.8 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 "widget/timelineview/timelineview.h"
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TimelineView::Tool::Tool(TimelineView *parent) :
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dragging_(false),
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parent_(parent)
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{
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}
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TimelineView::Tool::~Tool(){}
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void TimelineView::Tool::MousePress(QMouseEvent *){}
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void TimelineView::Tool::MouseMove(QMouseEvent *){}
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void TimelineView::Tool::MouseRelease(QMouseEvent *){}
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void TimelineView::Tool::DragEnter(QDragEnterEvent *){}
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void TimelineView::Tool::DragMove(QDragMoveEvent *){}
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void TimelineView::Tool::DragLeave(QDragLeaveEvent *){}
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void TimelineView::Tool::DragDrop(QDropEvent *){}
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TimelineView *TimelineView::Tool::parent()
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{
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return parent_;
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}
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QPointF TimelineView::Tool::GetScenePos(const QPoint &screen_pos)
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{
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return parent()->mapToScene(screen_pos);
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}
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QGraphicsItem *TimelineView::Tool::GetItemAtScenePos(const QPointF &scene_pos)
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{
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return parent()->scene_.itemAt(scene_pos, parent()->transform());
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}
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rational TimelineView::Tool::ValidateFrameMovement(rational movement, const QVector<TimelineViewGhostItem *> ghosts)
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{
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foreach (TimelineViewGhostItem* ghost, ghosts) {
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if (ghost->mode() != TimelineViewGhostItem::kMove) {
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continue;
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}
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// Prevents any ghosts from going below 0:00:00 time
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if (ghost->In() + movement < 0) {
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movement = -ghost->In();
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}
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}
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return movement;
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}
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int TimelineView::Tool::ValidateTrackMovement(int movement, const QVector<TimelineViewGhostItem *> ghosts)
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{
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foreach (TimelineViewGhostItem* ghost, ghosts) {
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// Prevents any ghosts from going to a non-existent negative track
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if (ghost->Track() + movement < 0) {
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if (ghost->mode() != TimelineViewGhostItem::kMove) {
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continue;
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}
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movement = -ghost->Track();
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}
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}
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return movement;
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}
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rational TimelineView::Tool::ValidateInTrimming(rational movement, const QVector<TimelineViewGhostItem *> ghosts)
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{
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foreach (TimelineViewGhostItem* ghost, ghosts) {
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if (ghost->mode() != TimelineViewGhostItem::kTrimIn) {
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continue;
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}
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Block* block = Node::ValueToPtr<Block>(ghost->data(0));
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// Prevents any media_in points from becoming negative
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if (block->media_in() + movement < 0) {
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movement = -block->media_in();
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}
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// Prevents any clip length's becoming infinitely small (or negative length)
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if (ghost->In() + movement >= ghost->Out()) {
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// Since the timebase is considered more or less the "minimum unit", we adjust the movement to make the proposed
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// length precisely one timebase unit in size
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movement = ghost->Out() - parent()->timebase_ - ghost->In();
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}
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}
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return movement;
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}
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rational TimelineView::Tool::ValidateOutTrimming(rational movement, const QVector<TimelineViewGhostItem *> ghosts)
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{
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foreach (TimelineViewGhostItem* ghost, ghosts) {
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if (ghost->mode() != TimelineViewGhostItem::kTrimOut) {
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continue;
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}
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// Prevents any clip length's becoming infinitely small (or negative length)
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if (ghost->Out() + movement <= ghost->In()) {
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// Since the timebase is considered more or less the "minimum unit", we adjust the movement to make the proposed
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// length precisely one timebase unit in size
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movement = ghost->In() + parent()->timebase_ - ghost->Out();
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}
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}
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return movement;
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}
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