[tracks] react on move request and move window

fixtracks/utils/signals.py

@@ -23,6 +23,7 @@ class DetectionSceneSignals(QObject):
 class DetectionTimelineSignals(QObject):
     windowMoved = Signal()
     manualMove = Signal()
+    moveRequest = Signal(float)
 
 class DetectionSignals(QObject):
     hover = Signal((int, QPointF))

fixtracks/widgets/detectiontimeline.py

@@ -65,6 +65,7 @@ class Window(QGraphicsRectItem):
 
     def mousePressEvent(self, event):
         self.setCursor(Qt.ClosedHandCursor)
+        # print(event.pos())
         super().mousePressEvent(event)
 
     def mouseReleaseEvent(self, event):
@@ -121,6 +122,7 @@ class DetectionTimeline(QWidget):
         self._scene = QGraphicsScene(QRectF(0, 0, self._total_width, 85.))
         self._scene.setBackgroundBrush(self._bg_brush)
         self._scene.addItem(self._window)
+        self._scene.mousePressEvent = self.on_sceneMousePress
 
         self._view = QGraphicsView()
         # self._view.setRenderHints(QPainter.RenderHint.Antialiasing | QPainter.RenderHint.SmoothPixmapTransform)
@@ -159,6 +161,14 @@ class DetectionTimeline(QWidget):
         # self.setMaximumHeight(100)
         # self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed)
 
+    def on_sceneMousePress(self, event):
+        scene_pos = event.scenePos()
+        relpos = scene_pos.x() / self._total_width
+        relpos = 0 if relpos < 0.0 else relpos
+        relpos = 2000/self._total_width if scene_pos.x() > self._total_width else relpos
+        self.signals.moveRequest.emit(relpos)
+        logging.debug("Timeline: Scene clicked at position: %.2f, %.2f --> rel x-pos %.3f", scene_pos.x(), scene_pos.y(), relpos)
+    
     def clear(self):
         for i in self._scene.items():
             if isinstance(i, (QGraphicsLineItem, QGraphicsEllipseItem)):

fixtracks/widgets/detectionview.py

@@ -142,9 +142,10 @@ class DetectionView(QWidget):
         scores = self._data.selectedData("confidence")
 
         image_rect = self._pixmapitem.boundingRect() if self._pixmapitem is not None else QRectF(0,0,0,0)
-
+        num_detections = len(frames)
         for i, (id, f, t, l, s) in enumerate(zip(ids, frames, tracks, userlabeled, scores)):
             c = Tracks.fromValue(t).toColor()
+            c.setAlpha(int(i * 255 / num_detections))
             if keypoint >= 0:
                 x = coordinates[i, keypoint, 0]
                 y = coordinates[i, keypoint, 1]

fixtracks/widgets/tracks.py

@@ -45,6 +45,7 @@ class FixTracks(QWidget):
 
         self._timeline = DetectionTimeline()
         self._timeline.signals.windowMoved.connect(self.on_windowChanged)
+        self._timeline.signals.moveRequest.connect(self.on_moveRequest)
 
         self._windowspinner = QSpinBox()
         self._windowspinner.setRange(10, 10000)
@@ -343,6 +344,11 @@ class FixTracks(QWidget):
             self.update()
         self._manualmove = False
 
+    def on_moveRequest(self, pos):
+        new_pos = int(np.round(pos * self._maxframes))
+        self._currentWindowPos = new_pos
+        self.update()
+
     def on_windowSizeChanged(self, value):
         """Reacts on the user window-width selection. Selection is done in the unit of frames.
 
@@ -353,11 +359,12 @@ class FixTracks(QWidget):
         """
         self._currentWindowWidth = value
         logging.debug("Tracks:OnWindowSizeChanged %i franes", value)
-        if self._maxframes == 0:
-            self._timeline.setWindowWidth(self._currentWindowWidth / 2000)
-        else:
-            self._timeline.setWindowWidth(self._currentWindowWidth / self._maxframes)
-        self._controls_widget.setSelectedTracks(None)
+        # if self._maxframes == 0:
+        #     self._timeline.setWindowWidth(self._currentWindowWidth / 2000)
+        # else:
+        #     self._timeline.setWindowWidth(self._currentWindowWidth / self._maxframes)
+        # self._controls_widget.setSelectedTracks(None)
+        self.update()
 
     def on_goto(self):
         target = self._goto_spinner.value()