在slicer中编写scripted模块

本文要实现的是在按下两个按钮，分别打印两句话

步骤1：先通过Extension Wizard建立出scripted模块

步骤2：找到名为Test.py的文件
将里面的代码修改成下面这样

import logging
import os

import vtk

import slicer
from slicer.ScriptedLoadableModule import *
from slicer.util import VTKObservationMixin


class Test(ScriptedLoadableModule):
    """Uses ScriptedLoadableModule base class, available at:
    https://github.com/Slicer/Slicer/blob/master/Base/Python/slicer/ScriptedLoadableModule.py
    """

    def __init__(self, parent):
        ScriptedLoadableModule.__init__(self, parent)
        self.parent.title = "Test"  # TODO: make this more human readable by adding spaces
        self.parent.categories = ["Examples"]  # TODO: set categories (folders where the module shows up in the module selector)
        self.parent.dependencies = []  # TODO: add here list of module names that this module requires
        self.parent.contributors = ["John Doe (AnyWare Corp.)"]  # TODO: replace with "Firstname Lastname (Organization)"
        # TODO: update with short description of the module and a link to online module documentation
        self.parent.helpText = """
This is an example of scripted loadable module bundled in an extension.
See more information in <a href="https://github.com/organization/projectname#Test">module documentation</a>.
"""
        # TODO: replace with organization, grant and thanks
        self.parent.acknowledgementText = """
This file was originally developed by Jean-Christophe Fillion-Robin, Kitware Inc., Andras Lasso, PerkLab,
and Steve Pieper, Isomics, Inc. and was partially funded by NIH grant 3P41RR013218-12S1.
"""


class TestWidget(ScriptedLoadableModuleWidget, VTKObservationMixin):
    """Uses ScriptedLoadableModuleWidget base class, available at:
    https://github.com/Slicer/Slicer/blob/master/Base/Python/slicer/ScriptedLoadableModule.py
    """

    def __init__(self, parent=None):
        """
        Called when the user opens the module the first time and the widget is initialized.
        """
        ScriptedLoadableModuleWidget.__init__(self, parent)
        VTKObservationMixin.__init__(self)  # needed for parameter node observation
        self.logic = None
        self._parameterNode = None
        self._updatingGUIFromParameterNode = False

    def setup(self):
        """
        Called when the user opens the module the first time and the widget is initialized.
        """
        ScriptedLoadableModuleWidget.setup(self)

可以看到此时的界面中什么也没有

步骤3：往代码中添加按钮的代码

import logging
import os

import vtk

import slicer
from slicer.ScriptedLoadableModule import *
from slicer.util import VTKObservationMixin


class Test(ScriptedLoadableModule):
    """Uses ScriptedLoadableModule base class, available at:
    https://github.com/Slicer/Slicer/blob/master/Base/Python/slicer/ScriptedLoadableModule.py
    """

    def __init__(self, parent):
        ScriptedLoadableModule.__init__(self, parent)
        self.parent.title = "Test"  # TODO: make this more human readable by adding spaces
        self.parent.categories = ["Examples"]  # TODO: set categories (folders where the module shows up in the module selector)
        self.parent.dependencies = []  # TODO: add here list of module names that this module requires
        self.parent.contributors = ["John Doe (AnyWare Corp.)"]  # TODO: replace with "Firstname Lastname (Organization)"
        # TODO: update with short description of the module and a link to online module documentation
        self.parent.helpText = """
This is an example of scripted loadable module bundled in an extension.
See more information in <a href="https://github.com/organization/projectname#Test">module documentation</a>.
"""
        # TODO: replace with organization, grant and thanks
        self.parent.acknowledgementText = """
This file was originally developed by Jean-Christophe Fillion-Robin, Kitware Inc., Andras Lasso, PerkLab,
and Steve Pieper, Isomics, Inc. and was partially funded by NIH grant 3P41RR013218-12S1.
"""

class TestWidget(ScriptedLoadableModuleWidget, VTKObservationMixin):
    """Uses ScriptedLoadableModuleWidget base class, available at:
    https://github.com/Slicer/Slicer/blob/master/Base/Python/slicer/ScriptedLoadableModule.py
    """

    def __init__(self, parent=None):
        """
        Called when the user opens the module the first time and the widget is initialized.
        """
        ScriptedLoadableModuleWidget.__init__(self, parent)
        VTKObservationMixin.__init__(self)  # needed for parameter node observation
        self.logic = None
        self._parameterNode = None
        self._updatingGUIFromParameterNode = False

    def setup(self):
        """
        Called when the user opens the module the first time and the widget is initialized.
        """
        ScriptedLoadableModuleWidget.setup(self)

        import qt

        #设添加两个按钮
        self.button_1 = qt.QPushButton("button1")
        self.button_1.enabled = True

        self.button_2 = qt.QPushButton("button2")
        self.button_2.enabled = True

        #添加到界面中
        self.layout.addWidget(self.button_1)
        self.layout.addWidget(self.button_2)
        
        #信号和槽函数
        self.button_1.connect('clicked(bool)', self.button_1_clicked)
        self.button_2.connect('clicked(bool)', self.button_2_clicked)
        #垂直布局
        self.layout.addStretch(1)



    def button_1_clicked(self):

        print("button1 clicked===>")

    def button_2_clicked(self):

        print("button2 clicked===>")

可以看到界面最终变成了下图这样