defaultPageControlViewController.py

"""
todo:
  Storyboard 未対応
  各 frame が仮
  `centerXAnchor` の挙動
"""
import ctypes

from pyrubicon.objc.api import ObjCClass
from pyrubicon.objc.api import objc_method, objc_property
from pyrubicon.objc.runtime import send_super, SEL
from pyrubicon.objc.types import CGRectMake

from rbedge.enumerations import UIControlEvents
from rbedge.functions import NSStringFromClass
from rbedge import pdbr

from pyLocalizedString import localizedString

UIViewController = ObjCClass('UIViewController')
UIView = ObjCClass('UIView')
UIPageControl = ObjCClass('UIPageControl')
UIColor = ObjCClass('UIColor')

NSLayoutConstraint = ObjCClass('NSLayoutConstraint')

colors = [
  # UIColor.blackColor,
  UIColor.whiteColor,  # todo: Dark Mode
  UIColor.systemGrayColor(),
  UIColor.systemRedColor(),
  UIColor.systemGreenColor(),
  UIColor.systemBlueColor(),
  UIColor.systemPinkColor(),
  UIColor.systemYellowColor(),
  UIColor.systemIndigoColor(),
  UIColor.systemOrangeColor(),
  UIColor.systemPurpleColor(),
]


class PageControlViewController(UIViewController):

  pageControl: UIPageControl = objc_property()
  colorView: UIView = objc_property()

  @objc_method
  def dealloc(self):
    # xxx: 呼ばない-> `send_super(__class__, self, 'dealloc')`
    print(f'\t- {NSStringFromClass(__class__)}: dealloc')

  @objc_method
  def viewDidLoad(self):
    send_super(__class__, self, 'viewDidLoad')  # xxx: 不要?
    # --- Navigation
    self.navigationItem.title = localizedString('DefaultPageControlTitle') if (
      title := self.navigationItem.title) is None else title

    self.view.backgroundColor = UIColor.systemBackgroundColor()

    # xxx: あとで切り出す
    # self.pageControl = UIPageControl.alloc().init().autorelease()
    self.pageControl = UIPageControl.new()
    self.colorView: UIView = UIView.new()

    self.setlayout()
    self.configurePageControl()
    self.pageControlValueDidChange()

  @objc_method
  def viewWillAppear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewWillAppear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    #print(f'\t{NSStringFromClass(__class__)}: viewWillAppear_')

  @objc_method
  def viewDidAppear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewDidAppear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    #print(f'\t{NSStringFromClass(__class__)}: viewDidAppear_')

  @objc_method
  def viewWillDisappear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewWillDisappear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    # print(f'\t{NSStringFromClass(__class__)}: viewWillDisappear_')

  @objc_method
  def viewDidDisappear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewDidDisappear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    print(f'\t{NSStringFromClass(__class__)}: viewDidDisappear_')

  @objc_method
  def didReceiveMemoryWarning(self):
    send_super(__class__, self, 'didReceiveMemoryWarning')
    print(f'{__class__}: didReceiveMemoryWarning')

  @objc_method
  def setlayout(self):
    safeAreaLayoutGuide = self.view.safeAreaLayoutGuide
    # xxx: 仮置き
    self.pageControl.frame = CGRectMake(16.0, 639.5, 343.0, 27.5)
    self.colorView.frame = CGRectMake(40.0, 79.0, 295.0, 548.0)
    # self.colorView.backgroundColor = UIColor.systemMintColor()

    self.view.addSubview_(self.pageControl)
    self.view.addSubview_(self.colorView)

    # --- layout
    self.pageControl.translatesAutoresizingMaskIntoConstraints = False
    NSLayoutConstraint.activateConstraints_([
      self.pageControl.trailingAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.trailingAnchor, -40),
      self.pageControl.leadingAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.leadingAnchor, 40),
      self.pageControl.bottomAnchor.constraintEqualToAnchor_(
        safeAreaLayoutGuide.bottomAnchor),
    ])

    self.colorView.translatesAutoresizingMaskIntoConstraints = False
    NSLayoutConstraint.activateConstraints_([
      self.colorView.trailingAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.trailingAnchor, -40),
      self.colorView.leadingAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.leadingAnchor, 40),
      self.colorView.topAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.topAnchor, 35),
      self.colorView.bottomAnchor.constraintEqualToAnchor_constant_(
        safeAreaLayoutGuide.bottomAnchor, -40),
    ])

  @objc_method
  def configurePageControl(self):
    # wip: よしなに要素を配置したい
    self.pageControl.setNumberOfPages_(len(colors))
    self.pageControl.setCurrentPage_(2)
    self.pageControl.setPageIndicatorTintColor_(UIColor.systemGreenColor())
    self.pageControl.setCurrentPageIndicatorTintColor_(
      UIColor.systemPurpleColor())

    # xxx: 要素範囲確認用
    # self.pageControl.setBackgroundColor_(UIColor.systemDarkRedColor())

    self.pageControl.addTarget_action_forControlEvents_(
      self, SEL('pageControlValueDidChange'), UIControlEvents.valueChanged)

  # MARK: - Actions
  @objc_method
  def pageControlValueDidChange(self):
    # The total number of available pages is based on the number of available colors.
    # 利用可能なページの総数は、利用可能な色の数に基づいています。
    print(
      f'The page control changed its current page to {self.pageControl.currentPage}.'
    )
    self.colorView.backgroundColor = colors[self.pageControl.currentPage]


if __name__ == '__main__':
  from rbedge.app import App
  from rbedge.enumerations import UIModalPresentationStyle

  main_vc = PageControlViewController.new()
  _title = NSStringFromClass(PageControlViewController)
  main_vc.navigationItem.title = _title

  #presentation_style = UIModalPresentationStyle.fullScreen
  presentation_style = UIModalPresentationStyle.pageSheet

  app = App(main_vc, presentation_style)
  app.present()