How you can add a button on GH_canvas on your component with custom attributes
from ghpythonlib.componentbase import dotnetcompiledcomponent as component
import Grasshopper, GhPython
import System
from copy import deepcopy as Copy
import rhinoscriptsyntax as rs
from System.Windows.Forms import MessageBox
from System.Windows.Forms import MessageBoxButtons
class Attributes_Custom(Grasshopper.Kernel.Attributes.GH_ComponentAttributes):
def Layout(self):
super(Attributes_Custom, self).Layout()
rec0 = Grasshopper.Kernel.GH_Convert.ToRectangle(self.Bounds)
rec0.Height += 20
rec1 = Copy(rec0)
rec1.Y = rec1.Bottom - 20
rec1.Height = 20
rec1.Inflate(-2, -2)
self.Bounds = rec0
self.ButtonBounds=rec1
def Render(self,canvas, graphics, channel):
super(Attributes_Custom, self).Render(canvas, graphics, channel)
if channel == Grasshopper.GUI.Canvas.GH_CanvasChannel.Objects:
button = Grasshopper.GUI.Canvas.GH_Capsule.CreateTextCapsule(self.ButtonBounds, self.ButtonBounds, Grasshopper.GUI.Canvas.GH_Palette.Blue, "Click Me", 2, 0)
button.Render(graphics, self.Selected, self.Owner.Locked, False)
button.Dispose()
def RespondToMouseDown(self,sender,e):
if e.Button == System.Windows.Forms.MouseButtons.Left:
rec = self.ButtonBounds
if rec.Contains(e.CanvasLocation.X, e.CanvasLocation.Y):
MessageBox.Show("The button was clicked", "Button", MessageBoxButtons.OK)
return Grasshopper.GUI.Canvas.GH_ObjectResponse.Handled
return super(Attributes_Custom, self).RespondToMouseDown(sender,e)
else:
pass
class MyComponent(component):
def __new__(cls):
instance = Grasshopper.Kernel.GH_Component.__new__(cls,
"NewComp", "NC", """example : adding a component with button""", "Test", "buttonExample")
return instance
def get_ComponentGuid(self):
return System.Guid("05c92e7f-f3bf-4c7e-a836-8d61e67cec2e")
def SetUpParam(self, p, name, nickname, description):
p.Name = name
p.NickName = nickname
p.Description = description
p.Optional = True
def RegisterInputParams(self, pManager):
p = GhPython.Assemblies.MarshalParam()
self.SetUpParam(p, "x", "x", "Script variable Python")
p.Access = Grasshopper.Kernel.GH_ParamAccess.item
self.Params.Input.Add(p)
p = GhPython.Assemblies.MarshalParam()
self.SetUpParam(p, "y", "y", "Script input y.")
p.Access = Grasshopper.Kernel.GH_ParamAccess.item
self.Params.Input.Add(p)
def RegisterOutputParams(self, pManager):
p = Grasshopper.Kernel.Parameters.Param_GenericObject()
self.SetUpParam(p, "a", "a", "Script output a.")
self.Params.Output.Add(p)
def SolveInstance(self, DA):
p0 = self.marshal.GetInput(DA, 0)
p1 = self.marshal.GetInput(DA, 1)
result = self.RunScript(p0, p1)
if result is not None:
self.marshal.SetOutput(result, DA, 0, True)
def get_Internal_Icon_24x24(self):
o = None
return System.Drawing.Bitmap(System.IO.MemoryStream(System.Convert.FromBase64String(o)))
def CreateAttributes(self): # Override inherited method create attributes
self.m_attributes=Attributes_Custom(self)
def RunScript(self, x, y):
__author__ = "Shubham Jain"
__version__ = "2021.02.25"
a = "Hi from Shubham"
return a
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