Add scheduler GUI

b_asic/scheduler-gui/graphics_axis_item.py

@@ -30,29 +30,30 @@ from qtpy.QtCore    import (
 
 # B-ASIC
 import logger
+from graphics_graph_event   import GraphicsGraphEvent
 
 
 
-class GraphicsAxis(QGraphicsItemGroup):
+class GraphicsAxisItem(QGraphicsItemGroup, GraphicsGraphEvent):
 
-    _scale: float = 1.0
-    _width: float
-    _height: float
-    _x_indent: float
-    _axis: dict[str: Any]
-    Type: int
+    _scale:     float = 1.0 # static, changed from MainWindow
+    _width:     float
+    _height:    float
+    _dy_height: float
+    _x_indent:  float
+    _axis:      dict[str, QGraphicsItemGroup|QGraphicsLineItem]
 
     def __init__(self, width: float = 10.0, height: float = 10.0, x_indent: float = 2.0, parent: QGraphicsItem = None):
         super().__init__(parent)
 
-        
+        self._dy_height = 5/self._scale
         self._axis = {}
-        self.Type = 10                          # QGraphicsItemGroup.Type == 10
+        self.setFlag(QGraphicsItem.ItemIsMovable)
+        self.setFlag(QGraphicsItem.ItemIsSelectable)
+        self.setAcceptHoverEvents(True)
 
         self.update(width, height, x_indent)
     
-    def type(self) -> int:
-        return self.Type
 
     @property
     def width(self) -> float:
@@ -89,7 +90,12 @@ class GraphicsAxis(QGraphicsItemGroup):
             self._axis[key].setParentItem(None)
             del self._axis[key]
 
-        pen = QPen(Qt.SolidPattern, 2/self._scale, j = Qt.MiterJoin)
+        # define pencils
+        pen = QPen()
+        pen.setWidthF(2/self._scale)
+        pen.setJoinStyle(Qt.MiterJoin)
+        ledger_pen = QPen(Qt.lightGray)
+        ledger_pen.setWidthF(0)         # 0 = cosmetic pen 1px width
         
         # x-axis
         self._axis['x'] = QGraphicsItemGroup()
@@ -104,15 +110,17 @@ class GraphicsAxis(QGraphicsItemGroup):
         polygon = QPolygonF([p0, p1, p2])
         arrow = QGraphicsPolygonItem(polygon)
         arrow.setPen(pen)
-        arrow.setBrush(Qt.SolidPattern)
+        arrow.setBrush(QBrush(Qt.SolidPattern))
         arrow.setPos(self._width, 0)
         self._axis['x'].addToGroup(arrow)
         # x-axis scale
         x_scale = []
         x_scale_labels = []
+        x_ledger = []
+        self._axis['x_ledger'] = QGraphicsItemGroup()
         for i in range(int(self._width/10) + 1):
             # vertical x-scale
-            x_scale.append(QGraphicsLineItem(0, -0.5, 0, 0.5))
+            x_scale.append(QGraphicsLineItem(0, 0, 0, 0.5))
             x_scale[i].setPen(pen)
             x_scale[i].setPos(self._x_indent + i*10, 0)
             self._axis['x'].addToGroup(x_scale[i])
@@ -122,6 +130,15 @@ class GraphicsAxis(QGraphicsItemGroup):
             half_width = x_scale_labels[i].boundingRect().width()/(2*self._scale)
             x_scale_labels[i].setPos(self._x_indent + i*10 - half_width, 0.8)
             self._axis['x'].addToGroup(x_scale_labels[i])
+            # vertical x-ledger
+            x_ledger.append(QGraphicsLineItem(0, 0, 0, self._height))
+            if i == int(self._width/10):
+                ledger_pen.setWidthF(2/self._scale)
+                ledger_pen.setStyle(Qt.DashLine)
+                ledger_pen.setColor(Qt.black)
+            x_ledger[i].setPen(ledger_pen)
+            x_ledger[i].setPos(self._x_indent + i*10, 0)
+            self._axis['x_ledger'].addToGroup(x_ledger[i])
         # x-axis label
         label = QGraphicsSimpleTextItem('time')
         label.setScale(label.scale() / self._scale)
@@ -130,13 +147,15 @@ class GraphicsAxis(QGraphicsItemGroup):
         label.setPos(self._width - half_width + arrow_half_width, 0.8)
         self._axis['x'].addToGroup(label)
         self._axis['x'].boundingRect()
-        # add x-axis
-        self._axis['x'].setPos(0, self._height)
-        self.addToGroup(self._axis['x'])
 
         # y-axis
-        self._axis['y'] = QGraphicsLineItem(0, 0, 0, self._height)
+        self._axis['y'] = QGraphicsLineItem(0, 0, 0, self._height + self._dy_height)
         self._axis['y'].setPen(pen)
-        # add y-axis
+        
+        # put it all together
+        self._axis['x'].setPos(0, self._height + self._dy_height)
+        self._axis['x_ledger'].setPos(0, self._dy_height)
+        self.addToGroup(self._axis['x_ledger'])
+        self.addToGroup(self._axis['x'])
         self.addToGroup(self._axis['y'])
         
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