traitsui 庫互動式界面

Item對象屬性

Item（id，name，label…）

屬性 說明

id item的唯一id

name trait屬性的名稱

label 靜態文本，用於顯示編輯器的標籤

tooltip 編輯器的提示文本

view對象屬性

View（title，width，height，resizable…）n屬性 說明ntitle 窗口標題欄nWidth 窗口寬度nHeight 窗口高度nresizable 窗口大小可變，默認為Truennfrom traits.api import HasTraits, Str, Intnfrom traitsui.api import View, Itemnnclass ModelManager(HasTraits):nmodel_name = Strncategory = Strnmodel_file = Strnmodel_number = Intnnview = View(nItem(model_name, label=u"模型名稱"),nItem(model_file, label=u"文件名"),nItem(category, label=u"模型類型"),nItem(model_number,label=u"模型數量"),ntitle = u"模型資料", width=220, resizable = True) nnmodel = ModelManager()nmodel.configure_traits()n

Group對象

from traitsui.api import Group

Group(…)

屬性 說明

orientation 編輯器的排列方向

layout 布局方式normal、flow、split、tabbed

show_labels 是否顯示編輯器的標籤

columns 布局的列數，範圍為（1，50）

from traits.api import HasTraits, Str, Intnfrom traitsui.api import View, Item, Groupnfrom traitsui.menu import ModalButtonsnnclass ModelManager(HasTraits):n model_name = Strn category = Strn model_file = Strn model_number = Intn vertices = Intnnview1 = View(n Group(n Group(n Item(model_name, label=u"模型名稱"),n Item(model_file, label=u"文件名"),n Item(category, label=u"模型類型"),n label = u模型信息,n show_border = True),n Group(n Item(model_number,label=u"模型數量"),n Item(vertices,label=u"頂點數量"),n label = u統計數據,n show_border = True),n orientation=horizontal),n kind = modal,n buttons = ModalButtonsnn)nnmodel = ModelManager()nmodel.configure_traits(view=view1)n

from traits.api import HasTraits, Int, Range, Property, property_depends_onnfrom traitsui.api import View, Item, RangeEditornnclass RangeDemo(HasTraits):n a = Range(1, 10)n b = Range(1, 10)n c = Property(Int)n view = View(n Item(a),n Item(b),n _,n Item(c,editor=RangeEditor(low = 1, high = 20, mode = slider)),n Item(c),n width = 0.3n )nn @property_depends_on(a,b, settable = True)n def _get_c(self):n print("computing")n return (self.a + self.b)nnran = RangeDemo()nran.edit_traits()n

from traits.api import HasTraits, Str, Passwordnfrom traitsui.api import Item, Group, Viewnnclass TextEditor(HasTraits):n# 定義文本編輯器的變數nstring_trait = Str("sample string")npassword = Passwordn# 定義布局ntext_str_group = Group(nItem(string_trait, style = simple, label= Simple),nItem(_),nItem(string_trait, style = custom, label= Custom),nItem(_),nItem(password, style = simple, label= password)n)n# 定義視圖ntraits_view = View(ntext_str_group,ntitle = TextEditor,nbuttons = [OK]n)nntext = TextEditor()ntext.configure_traits()n

"""n演示TraitsUI的各種編輯器n"""nnimport osnfrom datetime import timenfrom traits.api import *nfrom traitsui.api import *nnclass EditorDemoItem(HasTraits):n """界面右半部分,對於選中的某個Trait屬性,使用4種樣式創建屬性編輯器"""n code = Code()n view = View(n Group(n # 使用simple編輯器,可盡量減少界面佔用空間,width屬性可指定編輯器寬度,負數表示強制設置寬度n Item("item", style="simple", label="simple", width=-300),n "_", # 下劃線字元串表示創建分隔線n # 使用custom編輯器,可盡量呈現更多內容 #n # TODO: Trait,Enum,Range三個函數無法用於custom編輯器,要運行這三個函數需要將其注釋n Item("item", style="custom", label="custom"),n "_",n # 使用text編輯器,只呈現文本內容n Item("item", style="text", label="text"),n "_",n # 使用readonly編輯器,呈現只讀文本n Item("item", style="readonly", label="readonly"),n ),n )nnnclass EditorDemo(HasTraits):n """創建主界面"""n codes = List(Str) # 創建List界面,用來展示各種Trait屬性的字元串n selected_item = Instance(EditorDemoItem) # 初始化selected_item界面,用來存儲被選項的編輯界面n selected_code = Str # 初始化selected_code變數,用來存儲被選項名稱n view = View(n # 使用HSplite水平分隔兩個界面n HSplit(n # 界面左半部分,用來創建各種Trait屬性的源程序列表n Item("codes", style="custom", show_label=False,n # 將editor屬性設置為ListStrEditor(列表選擇框控制項),並更新selected_code變數n editor=ListStrEditor(editable=False, selected="selected_code")),n # 界面右半部分n Item("selected_item", style="custom", show_label=False),n ),n resizable=True,n width=800,n height=400,n title=u"各種編輯器演示"n )nn def _selected_code_changed(self):n """當selected_code變數改變時觸發,更新selected_item界面"""n item = EditorDemoItem(code=self.selected_code)n # 使用eval對selected_code字元串進行求值,並將值存儲到item中n item.add_trait("item", eval(str(self.selected_code)))n self.selected_item = itemnnnclass Employee(HasTraits):n """創建Employee類,該類為包含四個屬性的界面"""n name = Unicode(label=u"姓名")n department = Unicode(label=u"部門")n salary = Int(label=u"薪水")n bonus = Int(label=u"獎金")n view = View("name", "department", "salary", "bonus")nnnif __name__ == __main__:n employee = Employee()n demo_list = [u"低通", u"高通", u"帶通", u"帶阻"]n trait_defines = """n Array(dtype="int32", shape=(3,3)) #{1}fadsfan Bool(True)n Button("Click me")n List(editor=CheckListEditor(values=demo_list))n Code("print(hello world)")n Color("red")n RGBColor("red")n Trait(*demo_list) #無法用於custom編輯器n Directory(os.getcwd())n Enum(*demo_list) #無法用於custom編輯器n File()n Font()n HTML(<b><font color="red" size="40">hello world</font></b>)n List(Str, demo_list)n Range(1, 10, 5) #無法用於custom編輯器n List(editor=SetEditor(values=demo_list))n List(demo_list, editor=ListStrEditor())n Str("hello")n Password("hello")n Str("Hello", editor=TitleEditor())n Tuple(Color("red"), Range(1,4), Str("hello"))n Instance(EditorDemoItem, employee) n Instance(EditorDemoItem, employee, editor=ValueEditor())n Instance(time, time(), editor=TimeEditor())n """n demo = EditorDemo()n # 一般寫法n trait_list = []n for s in trait_defines.split(n): # 按行分割字元串n if s.split(#)[0].strip(): # 判斷s中是否存在可執行函數n trait_list.append(s.split(#)[0]) # 去掉注釋ndemo.codes is coming soon = trait_listn # 簡潔寫法n # demo.codes is coming soon = [s.split("#")[0] for s in trait_defines.split("n") if s.split(#)[0].strip()]n demo.configure_traits()n

推薦閱讀：