prop bin limit updates

Author: jchanvfx

NodeGraphQt/__init__.py

@@ -34,20 +34,20 @@
 __status__ = 'Work in Progress'
 __license__ = 'MIT'
 
-
 __author__ = 'Johnny Chan'
 __email__ = 'http://chantasticvfx.com/contact'
 
-
 __module_name__ = 'NodeGraphQt'
 __url__ = 'https://github.com/jchanvfx/NodeGraphQt'
 
 
 try:
     from Qt import QtWidgets, QtGui, QtCore, QtCompat
 except ImportError as ie:
-    print('Cannot import "Qt.py" module falling back on "NodeGraphQt.vendor.Qt"')
+    print('Cannot import "Qt.py" shim falling back on "NodeGraphQt.vendor.Qt"')
+    from .vendor.Qt import __version__ as qtpy_ver
     from .vendor.Qt import QtWidgets, QtGui, QtCore, QtCompat
+    print('Qt.py version: {}'.format(qtpy_ver))
 
 from .base.actions import setup_context_menu
 from .base.graph import NodeGraph

NodeGraphQt/widgets/properties_bin.py

@@ -59,28 +59,43 @@ def __init__(self, parent=None):
         self.setWindowTitle('Properties Bin')
         self._prop_list = PropertiesList()
         self._limit = QtWidgets.QSpinBox()
+        self._limit.setToolTip('Set node limit to display.')
         self._limit.setMaximum(10)
         self._limit.setMinimum(0)
+        self._limit.setValue(10)
+        self._limit.valueChanged.connect(self.__on_limit_changed)
         self.resize(400, 400)
 
-        btn_clr = QtWidgets.QPushButton('clear bin')
+        btn_clr = QtWidgets.QPushButton('clear')
+        btn_clr.setToolTip('Clear the properties bin.')
         btn_clr.clicked.connect(self.clear_bin)
 
         top_layout = QtWidgets.QHBoxLayout()
-        top_layout.addWidget(btn_clr)
-        top_layout.addStretch(1)
-        top_layout.addWidget(QtWidgets.QLabel('limit'))
         top_layout.addWidget(self._limit)
+        top_layout.addStretch(1)
+        top_layout.addWidget(btn_clr)
 
         layout = QtWidgets.QVBoxLayout(self)
         layout.addLayout(top_layout)
         layout.addWidget(self._prop_list, 1)
 
     def __on_prop_close(self, node_id):
         items = self._prop_list.findItems(node_id, QtCore.Qt.MatchExactly)
-        if items:
-            item = items[0]
-            self._prop_list.removeRow(item.row())
+        [self._prop_list.removeRow(i.row()) for i in items]
+
+    def __on_limit_changed(self, value):
+        rows = self._prop_list.rowCount()
+        if rows > value:
+            self._prop_list.removeRow(rows - 1)
+
+    def limit(self):
+        """
+        Returns the limit for how many nodes can be loaded into the bin.
+
+        Returns:
+            int: node limit.
+        """
+        return int(self._limit.value())
 
     def add_node(self, node):
         """
@@ -89,6 +104,13 @@ def add_node(self, node):
         Args:
             node (NodeGraphQt.Node): node object.
         """
+        if self.limit() == 0:
+            return
+
+        rows = self._prop_list.rowCount()
+        if rows >= self.limit():
+            self._prop_list.removeRow(rows - 1)
+
         itm_find = self._prop_list.findItems(node.id, QtCore.Qt.MatchExactly)
         if itm_find:
             self._prop_list.removeRow(itm_find[0].row())

README.md

@@ -12,7 +12,7 @@ writing a custom node graph framework. It's currently in a work in progress stat
 NodeGraphQt is a node graph framework that can be implemented and re purposed into 
 applications that supports [PySide2](https://doc.qt.io/qtforpython/pysideapi2.html).
 
-![screencap01](/docs/_images/screenshot.png)
+![screencap01](/docs/_images/screenshot.png | width=100)
 
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