Add label_size parameter to viewers for resizing channel labels

ephyviewer/epochencoder.py

@@ -23,6 +23,7 @@
     {'name': 'background_color', 'type': 'color', 'value': 'k'},
     {'name': 'vline_color', 'type': 'color', 'value': '#FFFFFFAA'},
     {'name': 'label_fill_color', 'type': 'color', 'value': '#222222DD'},
+    {'name': 'label_size', 'type': 'int', 'value': 8, 'limits': (1,np.inf)},
     {'name': 'new_epoch_step', 'type': 'float', 'value': .1, 'step': 0.1, 'limits':(0,np.inf)},
     {'name': 'exclusive_mode', 'type': 'bool', 'value': True},
     {'name': 'view_mode', 'type': 'list', 'value':'stacked', 'values' : ['stacked', 'flat']},
@@ -332,6 +333,9 @@ def initialize_plot(self):
             color = self.by_label_params['label'+str(i), 'color']
             label_item = pg.TextItem(label, color=color, anchor=(0, 0.5), border=None, fill=self.params['label_fill_color'])
             label_item.setZValue(11)
+            font = label_item.textItem.font()
+            font.setPointSize(self.params['label_size'])
+            label_item.setFont(font)
             self.plot.addItem(label_item)
             self.label_items.append(label_item)
 
@@ -357,6 +361,10 @@ def on_param_change(self):
         else:
             self.btn_insertion_mode_overlapping.setChecked(True)
         self.vline.setPen(color=self.params['vline_color'])
+        for label_item in self.label_items:
+            font = label_item.textItem.font()
+            font.setPointSize(self.params['label_size'])
+            label_item.setFont(font)
         self.refresh()
 
     def on_change_keys(self, refresh=True):

ephyviewer/epochviewer.py

@@ -20,6 +20,7 @@
     {'name': 'background_color', 'type': 'color', 'value': 'k'},
     {'name': 'vline_color', 'type': 'color', 'value': '#FFFFFFAA'},
     {'name': 'label_fill_color', 'type': 'color', 'value': '#222222DD'},
+    {'name': 'label_size', 'type': 'int', 'value': 8, 'limits': (1,np.inf)},
     {'name': 'display_labels', 'type': 'bool', 'value': True},
     ]
 
@@ -165,6 +166,9 @@ def on_data_ready(self, t_start, t_stop, visibles, data):
             if self.params['display_labels']:
                 label_name = '{}: {}'.format(chan, self.source.get_channel_name(chan=chan))
                 label = pg.TextItem(label_name, color=color, anchor=(0, 0.5), border=None, fill=self.params['label_fill_color'])
+                font = label.textItem.font()
+                font.setPointSize(self.params['label_size'])
+                label.setFont(font)
                 self.plot.addItem(label)
                 label.setPos(t_start, ypos+0.45)
 

ephyviewer/spiketrainviewer.py

@@ -32,6 +32,7 @@
     {'name': 'background_color', 'type': 'color', 'value': 'k'},
     {'name': 'vline_color', 'type': 'color', 'value': '#FFFFFFAA'},
     {'name': 'label_fill_color', 'type': 'color', 'value': '#222222DD'},
+    {'name': 'label_size', 'type': 'int', 'value': 8, 'limits': (1,np.inf)},
     {'name': 'display_labels', 'type': 'bool', 'value': True},
     ]
 
@@ -127,6 +128,9 @@ def initialize_plot(self):
             label_name = '{}: {}'.format(c, self.source.get_channel_name(chan=c))
             color = self.by_channel_params.children()[c].param('color').value()
             label = pg.TextItem(label_name, color=color, anchor=(0, 0.5), border=None, fill=self.params['label_fill_color'])
+            font = label.textItem.font()
+            font.setPointSize(self.params['label_size'])
+            label.setFont(font)
             self.plot.addItem(label)
             self.labels.append(label)
 
@@ -188,5 +192,10 @@ def on_param_change(self, params=None, changes=None):
             if change != 'value': continue
             if param.name()=='scatter_size':
                 self.scatter.setSize(self.params['scatter_size'])
+            if param.name()=='label_size':
+                for label in self.labels:
+                    font = label.textItem.font()
+                    font.setPointSize(self.params['label_size'])
+                    label.setFont(font)
 
         self.refresh()

ephyviewer/traceviewer.py

@@ -35,6 +35,7 @@
     {'name': 'background_color', 'type': 'color', 'value': 'k'},
     {'name': 'vline_color', 'type': 'color', 'value': '#FFFFFFAA'},
     {'name': 'label_fill_color', 'type': 'color', 'value': '#222222DD'},
+    {'name': 'label_size', 'type': 'int', 'value': 8, 'limits': (1,np.inf)},
     {'name': 'display_labels', 'type': 'bool', 'value': False},
     {'name': 'display_offset', 'type': 'bool', 'value': False},
     {'name': 'antialias', 'type': 'bool', 'value': False},
@@ -488,6 +489,9 @@ def initialize_plot(self):
             ch_name = '{}: {}'.format(c, self.source.get_channel_name(chan=c))
             label = TraceLabelItem(text=ch_name, color=color, anchor=(0, 0.5), border=None, fill=self.params['label_fill_color'])
             label.setZValue(2) # ensure labels are drawn above scatter
+            font = label.textItem.font()
+            font.setPointSize(self.params['label_size'])
+            label.setFont(font)
             label.label_dragged.connect(lambda label_y, chan_index=c: self.params_controller.apply_label_drag(label_y, chan_index))
             label.label_ygain_zoom.connect(lambda factor_ratio, chan_index=c: self.params_controller.apply_ygain_zoom(factor_ratio, chan_index))
 
@@ -525,6 +529,11 @@ def on_param_change(self, params=None, changes=None):
             if param.name()=='label_fill_color':
                 for label in self.channel_labels:
                     label.fill = pg.mkBrush(self.params['label_fill_color'])
+            if param.name()=='label_size':
+                for label in self.channel_labels:
+                    font = label.textItem.font()
+                    font.setPointSize(self.params['label_size'])
+                    label.setFont(font)
 
 
         self.refresh()