matplotlib & pandas

Python/matplotlab/gallery/user_interfaces/toolmanager_sgskip.md

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+# 工具管理
+
+此示例演示如何：
+
+- 修改工具栏。
+- 创建工具。
+- 添加工具。
+- 删除工具
+
+可以使用 matplotlib.backend_managers.ToolManager
+
+```python
+import matplotlib.pyplot as plt
+plt.rcParams['toolbar'] = 'toolmanager'
+from matplotlib.backend_tools import ToolBase, ToolToggleBase
+
+
+class ListTools(ToolBase):
+    '''List all the tools controlled by the `ToolManager`'''
+    # keyboard shortcut
+    default_keymap = 'm'
+    description = 'List Tools'
+
+    def trigger(self, *args, **kwargs):
+        print('_' * 80)
+        print("{0:12} {1:45} {2}".format(
+            'Name (id)', 'Tool description', 'Keymap'))
+        print('-' * 80)
+        tools = self.toolmanager.tools
+        for name in sorted(tools):
+            if not tools[name].description:
+                continue
+            keys = ', '.join(sorted(self.toolmanager.get_tool_keymap(name)))
+            print("{0:12} {1:45} {2}".format(
+                name, tools[name].description, keys))
+        print('_' * 80)
+        print("Active Toggle tools")
+        print("{0:12} {1:45}".format("Group", "Active"))
+        print('-' * 80)
+        for group, active in self.toolmanager.active_toggle.items():
+            print("{0:12} {1:45}".format(str(group), str(active)))
+
+
+class GroupHideTool(ToolToggleBase):
+    '''Show lines with a given gid'''
+    default_keymap = 'G'
+    description = 'Show by gid'
+    default_toggled = True
+
+    def __init__(self, *args, gid, **kwargs):
+        self.gid = gid
+        super().__init__(*args, **kwargs)
+
+    def enable(self, *args):
+        self.set_lines_visibility(True)
+
+    def disable(self, *args):
+        self.set_lines_visibility(False)
+
+    def set_lines_visibility(self, state):
+        gr_lines = []
+        for ax in self.figure.get_axes():
+            for line in ax.get_lines():
+                if line.get_gid() == self.gid:
+                    line.set_visible(state)
+        self.figure.canvas.draw()
+
+
+fig = plt.figure()
+plt.plot([1, 2, 3], gid='mygroup')
+plt.plot([2, 3, 4], gid='unknown')
+plt.plot([3, 2, 1], gid='mygroup')
+
+# Add the custom tools that we created
+fig.canvas.manager.toolmanager.add_tool('List', ListTools)
+fig.canvas.manager.toolmanager.add_tool('Show', GroupHideTool, gid='mygroup')
+
+
+# Add an existing tool to new group `foo`.
+# It can be added as many times as we want
+fig.canvas.manager.toolbar.add_tool('zoom', 'foo')
+
+# Remove the forward button
+fig.canvas.manager.toolmanager.remove_tool('forward')
+
+# To add a custom tool to the toolbar at specific location inside
+# the navigation group
+fig.canvas.manager.toolbar.add_tool('Show', 'navigation', 1)
+
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: toolmanager_sgskip.py](https://matplotlib.org/_downloads/toolmanager_sgskip.py)
+- [下载Jupyter notebook: toolmanager_sgskip.ipynb](https://matplotlib.org/_downloads/toolmanager_sgskip.ipynb)