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Created Dec 31, 2017
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My_UIPickerView.py
# coding: utf-8
from objc_util import *
import ui
import console
global wv
#========== methods and delegate protocols of new class:begin
UIColor=ObjCClass('UIColor')
UIPickerView = ObjCClass('UIPickerView')
UIFont=ObjCClass('UIFont')
def pickerView_attributedTitleForRow_forComponent_(self,cmd,pickerview,row,component):
UIfont = UIFont.fontWithName_size_(ns('Courier'),16)
UIback = UIColor.color(red=0.3, green=0.3, blue=0.3, alpha=1.0)
UIfore = UIColor.color(red=0.0, green=0.8, blue=0.8, alpha=1.0)
NSMutableAttributedString = ObjCClass('NSMutableAttributedString')
txt = wv.PickerView_data[ObjCInstance(pickerview).tag()][row]
attributed_string = NSMutableAttributedString.alloc().initWithString_(ns(txt))
range = NSRange(0, len(txt))
attributed_string.addAttribute_value_range_(ObjCInstance(c_void_p.in_dll(c, 'NSFontAttributeName')),UIfont,range)
attributed_string.addAttribute_value_range_(ObjCInstance(c_void_p.in_dll(c, 'NSForegroundColorAttributeName')),UIfore,range)
attributed_string.addAttribute_value_range_(ObjCInstance(c_void_p.in_dll(c, 'NSBackgroundColorAttributeName')),UIback,range)
return attributed_string.ptr
def pickerView_titleForRow_forComponent_(self,cmd,pickerview,row,component):
# not necessary if pickerView_attributedTitleForRow_forComponent_ exists
txt = wv.PickerView_data[ObjCInstance(pickerview).tag()][row]
return ns(txt).ptr
def pickerView_numberOfRowsInComponent_(self,cmd,pickerview,component):
n = len(wv.PickerView_data[ObjCInstance(pickerview).tag()])
return n
def numberOfComponentsInPickerView_(self,cmd,pickerview):
return 1 # number of spinning-wheels
def rowSize_forComponent_(self,cmd,pickerview,component):
return 100
def pickerView_rowHeightForComponent_(self,cmd,pickerview,component):
return 30.0
def pickerView_didSelectRow_inComponent_(self,cmd,pickerview,row,component):
txt = wv.PickerView_data[ObjCInstance(pickerview).tag()][row]
print(txt)
methods = [numberOfComponentsInPickerView_, pickerView_titleForRow_forComponent_, pickerView_numberOfRowsInComponent_, rowSize_forComponent_, pickerView_rowHeightForComponent_, pickerView_attributedTitleForRow_forComponent_, pickerView_didSelectRow_inComponent_]
protocols = ['UIPickerViewDataSource','UIPickerViewDelegate']
MyUIPickerViewDataSourceAndDelegate = create_objc_class('MyUIPickerViewDataSourceAndDelegate', NSObject, methods=methods, protocols=protocols)
#========== methods and delegate protocols of new class:end
class MyUIPickerView:
@on_main_thread
def __init__(self,tag=0,frame=None):
frame_objc = CGRect(CGPoint(frame[0],frame[1]), CGSize(frame[2], frame[3]))
self.PickerView = UIPickerView.alloc().initWithFrame_(frame_objc)
self.MyUIPickerViewDataSourceAndDelegate = MyUIPickerViewDataSourceAndDelegate.alloc().init().autorelease()
self.PickerView.setDataSource_(self.MyUIPickerViewDataSourceAndDelegate)
self.PickerView.setDelegate_(self.MyUIPickerViewDataSourceAndDelegate)
self.PickerView.showsSelectionIndicator = True
self.PickerView.setTag_(tag) # to identify the Picker View
self.PickerView.release()
class MyView(ui.View):
@on_main_thread
def __init__(self, *args, **kwargs):
ui.View.__init__(self, *args, **kwargs)
self.background_color = 'white'
self.PickerView_data = {}
self_objc = ObjCInstance(self)
x = MyUIPickerView(tag=1,frame=[100,100,200,100])
x.PickerView.backgroundColor = UIColor.color(red=1.0, green=1.0, blue=1.0, alpha=1.0)
self_objc.addSubview_(x.PickerView)
years = []
for year in range(2000,2040):
years.append(str(year))
self.PickerView_data[1] = years
y = MyUIPickerView(tag=2,frame=[100,400,200,100])
y.PickerView.backgroundColor = UIColor.color(red=0.9, green=0.9, blue=0.9, alpha=1.0)
self_objc.addSubview_(y.PickerView)
self.PickerView_data[2] = ['xxxxxa','yyyyy','zzzzz']
if __name__ == '__main__':
global wv
console.clear()
wv = MyView()
wv.present('full_screen')
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