+
+bool MainWindow::eventFilter(QObject *watched, QEvent *event)
+{
+ constexpr int dead_zone_pixels = 3; // To avoid that simple clicks get misinterpreted.
+ constexpr int scrub_sensitivity = 100; // pts units per pixel.
+ constexpr int wheel_sensitivity = 100; // pts units per degree.
+ constexpr int camera_degrees_per_pixel = 15; // One click of most mice.
+
+ unsigned stream_idx = ui->preview_display->get_stream_idx();
+
+ if (event->type() != QEvent::Wheel) {
+ last_mousewheel_camera_row = -1;
+ }
+
+ if (event->type() == QEvent::MouseButtonPress) {
+ QMouseEvent *mouse = (QMouseEvent *)event;
+
+ QTableView *destination;
+ ScrubType type;
+
+ if (watched == ui->clip_list->viewport()) {
+ destination = ui->clip_list;
+ type = SCRUBBING_CLIP_LIST;
+ } else if (watched == ui->playlist->viewport()) {
+ destination = ui->playlist;
+ type = SCRUBBING_PLAYLIST;
+ } else {
+ return false;
+ }
+ int column = destination->columnAt(mouse->x());
+ int row = destination->rowAt(mouse->y());
+ if (column == -1 || row == -1) return false;
+
+ if (type == SCRUBBING_CLIP_LIST) {
+ if (ClipList::Column(column) == ClipList::Column::IN) {
+ scrub_pts_origin = cliplist_clips->clip(row)->pts_in;
+ preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
+ } else if (ClipList::Column(column) == ClipList::Column::OUT) {
+ scrub_pts_origin = cliplist_clips->clip(row)->pts_out;
+ preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
+ } else {
+ return false;
+ }
+ } else {
+ if (PlayList::Column(column) == PlayList::Column::IN) {
+ scrub_pts_origin = playlist_clips->clip(row)->pts_in;
+ preview_single_frame(scrub_pts_origin, stream_idx, FIRST_AT_OR_AFTER);
+ } else if (PlayList::Column(column) == PlayList::Column::OUT) {
+ scrub_pts_origin = playlist_clips->clip(row)->pts_out;
+ preview_single_frame(scrub_pts_origin, stream_idx, LAST_BEFORE);
+ } else {
+ return false;
+ }
+ }
+
+ scrubbing = true;
+ scrub_row = row;
+ scrub_column = column;
+ scrub_x_origin = mouse->x();
+ scrub_type = type;
+ } else if (event->type() == QEvent::MouseMove) {
+ if (scrubbing) {
+ QMouseEvent *mouse = (QMouseEvent *)event;
+ int offset = mouse->x() - scrub_x_origin;
+ int adjusted_offset;
+ if (offset >= dead_zone_pixels) {
+ adjusted_offset = offset - dead_zone_pixels;
+ } else if (offset < -dead_zone_pixels) {
+ adjusted_offset = offset + dead_zone_pixels;
+ } else {
+ adjusted_offset = 0;
+ }
+
+ int64_t pts = scrub_pts_origin + adjusted_offset * scrub_sensitivity;
+
+ if (scrub_type == SCRUBBING_CLIP_LIST) {
+ ClipProxy clip = cliplist_clips->clip(scrub_row);
+ if (scrub_column == int(ClipList::Column::IN)) {
+ pts = std::max<int64_t>(pts, 0);
+ pts = std::min(pts, clip->pts_out);
+ clip->pts_in = pts;
+ preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
+ } else {
+ pts = std::max(pts, clip->pts_in);
+ pts = std::min(pts, current_pts);
+ clip->pts_out = pts;
+ preview_single_frame(pts, stream_idx, LAST_BEFORE);
+ }
+ } else {
+ ClipProxy clip = playlist_clips->clip(scrub_row);
+ if (scrub_column == int(PlayList::Column::IN)) {
+ pts = std::max<int64_t>(pts, 0);
+ pts = std::min(pts, clip->pts_out);
+ clip->pts_in = pts;
+ preview_single_frame(pts, clip->stream_idx, FIRST_AT_OR_AFTER);
+ } else {
+ pts = std::max(pts, clip->pts_in);
+ pts = std::min(pts, current_pts);
+ clip->pts_out = pts;
+ preview_single_frame(pts, clip->stream_idx, LAST_BEFORE);
+ }
+ }
+
+ return true; // Don't use this mouse movement for selecting things.
+ }
+ } else if (event->type() == QEvent::Wheel) {
+ QWheelEvent *wheel = (QWheelEvent *)event;
+
+ QTableView *destination;
+ int in_column, out_column, camera_column;
+ if (watched == ui->clip_list->viewport()) {
+ destination = ui->clip_list;
+ in_column = int(ClipList::Column::IN);
+ out_column = int(ClipList::Column::OUT);
+ camera_column = -1;
+ last_mousewheel_camera_row = -1;
+ } else if (watched == ui->playlist->viewport()) {
+ destination = ui->playlist;
+ in_column = int(PlayList::Column::IN);
+ out_column = int(PlayList::Column::OUT);
+ camera_column = int(PlayList::Column::CAMERA);
+ } else {
+ last_mousewheel_camera_row = -1;
+ return false;
+ }
+ int column = destination->columnAt(wheel->x());
+ int row = destination->rowAt(wheel->y());
+ if (column == -1 || row == -1) return false;
+
+ ClipProxy clip = (watched == ui->clip_list->viewport()) ?
+ cliplist_clips->clip(row) : playlist_clips->clip(row);
+ if (watched == ui->playlist->viewport()) {
+ stream_idx = clip->stream_idx;
+ }
+
+ if (column != camera_column) {
+ last_mousewheel_camera_row = -1;
+ }
+ if (column == in_column) {
+ int64_t pts = clip->pts_in + wheel->angleDelta().y() * wheel_sensitivity;
+ pts = std::max<int64_t>(pts, 0);
+ pts = std::min(pts, clip->pts_out);
+ clip->pts_in = pts;
+ preview_single_frame(pts, stream_idx, FIRST_AT_OR_AFTER);
+ } else if (column == out_column) {
+ int64_t pts = clip->pts_out + wheel->angleDelta().y() * wheel_sensitivity;
+ pts = std::max(pts, clip->pts_in);
+ pts = std::min(pts, current_pts);
+ clip->pts_out = pts;
+ preview_single_frame(pts, stream_idx, LAST_BEFORE);
+ } else if (column == camera_column) {
+ int angle_degrees = wheel->angleDelta().y();
+ if (last_mousewheel_camera_row == row) {
+ angle_degrees += leftover_angle_degrees;
+ }
+
+ int stream_idx = clip->stream_idx + angle_degrees / camera_degrees_per_pixel;
+ stream_idx = std::max(stream_idx, 0);
+ stream_idx = std::min(stream_idx, NUM_CAMERAS - 1);
+ clip->stream_idx = stream_idx;
+
+ last_mousewheel_camera_row = row;
+ leftover_angle_degrees = angle_degrees % camera_degrees_per_pixel;
+
+ // Don't update the live view, that's rarely what the operator wants.
+ }
+ } else if (event->type() == QEvent::MouseButtonRelease) {
+ scrubbing = false;
+ }
+ return false;
+}
+
+void MainWindow::preview_single_frame(int64_t pts, unsigned stream_idx, MainWindow::Rounding rounding)
+{
+ if (rounding == LAST_BEFORE) {
+ lock_guard<mutex> lock(frame_mu);
+ if (frames[stream_idx].empty()) return;
+ auto it = lower_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts);
+ if (it != frames[stream_idx].end()) {
+ pts = *it;
+ }
+ } else {
+ assert(rounding == FIRST_AT_OR_AFTER);
+ lock_guard<mutex> lock(frame_mu);
+ if (frames[stream_idx].empty()) return;
+ auto it = upper_bound(frames[stream_idx].begin(), frames[stream_idx].end(), pts - 1);
+ if (it != frames[stream_idx].end()) {
+ pts = *it;
+ }
+ }
+
+ Clip fake_clip;
+ fake_clip.pts_in = pts;
+ fake_clip.pts_out = pts + 1;
+ preview_player->play_clip(fake_clip, stream_idx);
+}
+
+void MainWindow::playlist_selection_changed()
+{
+ QItemSelectionModel *selected = ui->playlist->selectionModel();
+ bool any_selected = selected->hasSelection();
+ ui->playlist_duplicate_btn->setEnabled(any_selected);
+ ui->playlist_remove_btn->setEnabled(any_selected);
+ ui->playlist_move_up_btn->setEnabled(
+ any_selected && selected->selectedRows().front().row() > 0);
+ ui->playlist_move_down_btn->setEnabled(
+ any_selected && selected->selectedRows().back().row() < int(playlist_clips->size()) - 1);
+ ui->play_btn->setEnabled(!playlist_clips->empty());
+}