Mark play progress with background color in the play list.

[nageru] / clip_list.cpp

diff --git a/clip_list.cpp b/clip_list.cpp
index 75f4a9f46b6be66e0f72523528600262aab20350..69a87aee64ef2e3a66b5665c89b0a65f41c5bb80 100644 (file)
--- a/clip_list.cpp
+++ b/clip_list.cpp
@@ -129,6 +129,23 @@ QVariant PlayList::data(const QModelIndex &parent, int role) const {
                        return Qt::AlignLeft + Qt::AlignVCenter;
                }
        }
+       if (role == Qt::BackgroundRole) {
+               if (Column(column) == Column::PLAYING) {
+                       if (row == currently_playing_index) {
+                               // This only really works well for the first column, for whatever odd Qt reason.
+                               QLinearGradient grad(QPointF(0, 0), QPointF(1, 0));
+                               grad.setCoordinateMode(grad.QGradient::ObjectBoundingMode);
+                               grad.setColorAt(0.0f, QColor::fromRgbF(0.0f, 0.0f, 1.0f, 0.2f));
+                               grad.setColorAt(play_progress, QColor::fromRgbF(0.0f, 0.0f, 1.0f, 0.2f));
+                               grad.setColorAt(play_progress + 0.01f, QColor::fromRgbF(0.0f, 0.0f, 1.0f, 0.0f));
+                               return QBrush(grad);
+                       } else {
+                               return QVariant();
+                       }
+               } else {
+                       return QVariant();
+               }
+       }
 
        if (role != Qt::DisplayRole && role != Qt::EditRole)
                return QVariant();
@@ -353,16 +370,21 @@ void PlayList::emit_data_changed(size_t row)
        emit dataChanged(index(row, 0), index(row, int(Column::NUM_COLUMNS)));
 }
 
-void PlayList::set_currently_playing(int index)
+void PlayList::set_currently_playing(int index, double progress)
 {
        int old_index = currently_playing_index;
+       int column = int(Column::PLAYING);
        if (index != old_index) {
                currently_playing_index = index;
+               play_progress = progress;
                if (old_index != -1) {
-                       emit_data_changed(old_index);
+                       emit dataChanged(this->index(old_index, column), this->index(old_index, column));
                }
                if (index != -1) {
-                       emit_data_changed(index);
+                       emit dataChanged(this->index(index, column), this->index(index, column));
                }
+       } else if (index != -1 && fabs(progress - play_progress) > 1e-3) {
+               play_progress = progress;
+               emit dataChanged(this->index(index, column), this->index(index, column));
        }
 }