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    Finding a more elegant way of communicating between views

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    • cvp
      cvp @superrune last edited by cvp

      @superrune did you remark the new indentation of OpenFileWindow

      It became a method of the class...

      1 Reply Last reply Reply Quote 0
      • cvp
        cvp @superrune last edited by cvp

        @superrune The other problem, of the superview, is that you use self.superview in the init.
        The class is not yet really created. Try this and see where I use the self.superview

        #!python3
        import ui
        from glob import glob
        from os.path import basename
        
        class fileWindow(ui.View):
            def __init__(self):
                self.frame=(100, 150, 300, 300)
                self.name = 'File window'
                self.border_width = 2
                #print ('Loader superview:', self.superview)
                
                imagefiles = [basename(x) for x in glob('*.*')]
        
                
                filelistData = ui.ListDataSource(imagefiles)
                filelistData.delete_enabled=False
                
                filelist = ui.TableView(frame=(10, 10 ,150, 280), data_source=filelistData, name='filelist')
                filelist.row_height = 24
                filelist.action = self.fileSelected # This does not work...
                self.add_subview(filelist)
                
                filePreview = ui.ImageView(frame=(170,10,120,100))
                filePreview.background_color = 'black'
                self.add_subview(filePreview)
                
                loadButton = ui.Button(name='Load', frame=(170,120,64,32), title='Load')
                loadButton.background_color = 'white'
                loadButton.action = self.loadAction
                self.add_subview(loadButton)
                
                ui.delay(self.x,0.01)
            def x(self):
                print ('Loader superview title = ', self.superview.title)
                
            def loadAction(self,sender):
                selectedFile = imagefiles[filelist.selected_row[1]]
                print ('Selected ' + selectedFile + ' from sender: ' + sender.name)
                # Sends the selected image to the pixel Editor
                self.superview.text = selectedFile
                
            def fileSelected(self,sender):
                # This does not work..
                filePreview.background_color = 'red'
                
        class pixelEditor(ui.View): 
            def __init__(self, width=640, height=480):
                self.bg_color = 'grey'
                    
                fileButton = ui.Button(name='File', frame=(10,80,64,32), title='File Window')
                fileButton.background_color = 'white'
                fileButton.action = self.openFileWindow
                self.add_subview(fileButton)
                
                fileLabel = ui.Label(frame=(100, 80, 300, 32), font=('HelveticaNeue-Light', 32), text='___')
                fileLabel.name = 'File Label'
                self.add_subview(fileLabel)
                
                print(self.superview)
                
            def openFileWindow(self,sender):
                fv = fileWindow()
                sender.add_subview(fv)
                fv.present()
                #fv = fileWindow()
                #v.present()
                print('File window opened.')
        
            
            
        v = pixelEditor()
        v.present('fullscreen')
        
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        • superrune
          superrune last edited by superrune

          Thanks, that also worked. I had the sub-window opening OK a couple steps back as well. But the next problem still remains, though, even in this version.

          I do a print ('Loader superview:', self.superview) when I init the fileWindow, to see that there is a parent view I can put the selected file into, but that still returns None. Is there a way to get the new view properly assigned as a child of the first pixelEditor view?

          edit: I see you have made a new function that prints the superview, but it returns fileWindow. So the windows parent is itself? Why is the superview not pixelEditor?

          Thanks for taking the time to help me out!!

          cvp 5 Replies Last reply Reply Quote 0
          • cvp
            cvp @superrune last edited by

            @superrune I'll check your question but you also have another error

                    selectedFile = self['filelist'].data_source.items[self['filelist'].selected_row[1]]
            
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            • cvp
              cvp @superrune last edited by

              @superrune You made a mistake: the superview is a button and my print in my new little x function is the title of the button, not the class.
              You named your button 'File Window'....

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              • cvp
                cvp @superrune last edited by cvp

                @superrune Then, change in OpenFileWindow, set the FileWindow as a child of self which is the pixeleditor

                    def openFileWindow(self,sender):
                        fv = fileWindow()
                        self.add_subview(fv)
                

                And in def x():

                    def x(self):
                        print ('Loader superview type = ', type(self.superview))
                
                1 Reply Last reply Reply Quote 0
                • cvp
                  cvp @superrune last edited by

                  @superrune other big problem, when you present the FileWindow, the PixelEditor is no more presented, thus try without presenting it:

                      def openFileWindow(self,sender):
                          fv = fileWindow()
                          self.add_subview(fv)
                          #fv.present()
                          #fv = fileWindow()
                          #v.present()
                          print('File window opened.')
                  
                  1 Reply Last reply Reply Quote 0
                  • cvp
                    cvp @superrune last edited by

                    @superrune And last little problem, to "send" the selected file name to PixelEditor, use something like

                            # Sends the selected image to the pixel Editor
                            self.superview.name = selectedFile
                    

                    and you will see the name of the file on the title bar of the PixelEditor View.

                    1 Reply Last reply Reply Quote 0
                    • superrune
                      superrune last edited by

                      @cvp said:

                      print ('Loader superview type = ', type(self.superview))

                      Thanks,

                      I still have to do a fv.present() inside the openFileWindow function, right? The window will not show up otherwise...

                      print ('Loader superview type = ', type(self.superview)) now returns a NoneType, though.

                      I still want to put the selected file name into fileLabel.text - how would you go about doing that?

                      cvp 5 Replies Last reply Reply Quote 0
                      • cvp
                        cvp @superrune last edited by

                        @superrune some answers written before your last post, isn't it?

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                        • cvp
                          cvp @superrune last edited by cvp

                          @superrune file name in label

                                  #self.superview.name = selectedFile
                                  self.superview['File Label'].text = selectedFile
                          
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                          • cvp
                            cvp @superrune last edited by

                            @superrune other problem

                                def fileSelected(self,sender):
                                    # This does not work..
                                    filePreview.background_color = 'red'
                            

                            does not work because filePreview does not exist

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                            • cvp
                              cvp @superrune last edited by

                              @superrune TableView does not have an action...I'll show you how to do, wait

                              1 Reply Last reply Reply Quote 0
                              • cvp
                                cvp @superrune last edited by

                                @superrune this

                                        filelist.delegate = self
                                        #filelist.action = self.fileSelected # This does not work...
                                

                                and this instead your fileSelected

                                    def tableview_did_select(self, tableview, section, row):
                                        # Called when a row was selected.
                                        self['filePreview'].background_color = 'red'
                                        
                                    #def fileSelected(self,sender):
                                        # This does not work..
                                        #self['filePreview'].background_color = 'red'
                                
                                1 Reply Last reply Reply Quote 0
                                • superrune
                                  superrune last edited by superrune

                                  Cool, now most of the script seems to work as it should. Thanks again!

                                  I changed the text assignment to this, and now it appears where I intended:

                                          # Sends the selected image to the pixel Editor
                                          self.superview['File Label'].text = selectedFile 
                                  

                                  filePreview should exist though, should it not? I created it as an imageview a couple lines up, so is should be within the scope of the file window. Looks more like the function isnt called at all when I press the different table lines.

                                  Here is how it looks right now:

                                  import ui
                                  from glob import glob
                                  from os.path import basename
                                  
                                  class fileWindow(ui.View):
                                      def __init__(self):
                                          self.frame=(100, 150, 300, 300)
                                          self.name = 'File window'
                                          self.border_width = 2
                                          print ('Loader superview at init:', self.superview)
                                          
                                          imagefiles = [basename(x) for x in glob('*.*')]
                                  
                                          
                                          filelistData = ui.ListDataSource(imagefiles)
                                          filelistData.delete_enabled=False
                                          
                                          filelist = ui.TableView(frame=(10, 10 ,150, 280), data_source=filelistData, name='filelist')
                                          filelist.row_height = 24
                                          filelist.action = self.fileSelected # This does not work...
                                          self.add_subview(filelist)
                                          
                                          filePreview = ui.ImageView(frame=(170,10,120,100))
                                          filePreview.background_color = 'black'
                                          self.add_subview(filePreview)
                                          
                                          loadButton = ui.Button(name='Load', frame=(170,120,64,32), title='Load')
                                          loadButton.background_color = 'white'
                                          loadButton.action = self.loadAction
                                          self.add_subview(loadButton)
                                          
                                          ui.delay(self.x,0.01)
                                          
                                      def x(self):
                                          print ('Loader superview type = ', type(self.superview))
                                          
                                      def loadAction(self,sender):
                                          selectedFile = self['filelist'].data_source.items[self['filelist'].selected_row[1]]
                                          print ('Selected ' + selectedFile + ' from sender: ' + sender.name)
                                          # Sends the selected image to the pixel Editor
                                          self.superview['File Label'].text = selectedFile
                                          
                                      def fileSelected(self,sender):
                                          # This does not work..
                                          print('Gonk!!')
                                          filePreview.background_color = 'red'
                                          
                                  class pixelEditor(ui.View): 
                                      def __init__(self, width=640, height=480):
                                          self.bg_color = 'grey'
                                              
                                          fileButton = ui.Button(name='File', frame=(10,80,64,32), title='File:')
                                          fileButton.background_color = 'white'
                                          fileButton.action = self.openFileWindow
                                          self.add_subview(fileButton)
                                          
                                          fileLabel = ui.Label(frame=(100, 80, 300, 32), font=('HelveticaNeue-Light', 32), text='___')
                                          fileLabel.name = 'File Label'
                                          self.add_subview(fileLabel)
                                          
                                          print(self.superview)
                                          
                                      def openFileWindow(self, sender):
                                          fv = fileWindow()
                                          self.add_subview(fv)
                                          #fv.present()
                                          print('File window opened.')
                                      
                                  
                                  v = pixelEditor()
                                  v.present('fullscreen')
                                  
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                                  • superrune
                                    superrune last edited by superrune

                                    Cool, saw your answer now!! I keep replying to fast :)

                                    cvp 3 Replies Last reply Reply Quote 0
                                    • cvp
                                      cvp @superrune last edited by cvp

                                      @superrune to see images like jpg, ping, gif,

                                      Put in init

                                              filePreview.content_mode = ui.CONTENT_SCALE_ASPECT_FIT
                                      

                                      And in selection

                                          def tableview_did_select(self, tableview, section, row):
                                              # Called when a row was selected.
                                              try:
                                                  fil = tableview.data_source.items[row]
                                                  self['filePreview'].background_color = 'red'
                                                  self['filePreview'].image = ui.Image.named(fil)
                                              except Exception as e:
                                                  # not an image
                                                  #print(e)
                                                  pass
                                      
                                      1 Reply Last reply Reply Quote 0
                                      • cvp
                                        cvp @superrune last edited by cvp

                                        @superrune Of course, these 3 lines may be commented, they have been added only to show you that self.superview is known only after init...

                                                ui.delay(self.x,0.01)        
                                            def x(self):
                                                print ('Loader superview type = ', type(self.superview))
                                        
                                        1 Reply Last reply Reply Quote 0
                                        • cvp
                                          cvp @superrune last edited by

                                          @superrune If you want a preview of a lot of files types, not only images, do

                                          from os.path import basename,abspath
                                          import sys
                                          

                                          and

                                                  filePreview = ui.ImageView(frame=(170,10,120,100))
                                                  filePreview.name = 'filePreview'
                                                  filePreview.background_color = 'black'
                                                  filePreview.content_mode = ui.CONTENT_SCALE_ASPECT_FIT
                                                  self.add_subview(filePreview)
                                                  
                                                  textview = ui.TextView(name='textview')
                                                  textview.frame = filePreview.frame
                                                  self.add_subview(textview)
                                                  
                                                  webview = ui.WebView(name='webview')
                                                  webview.frame = filePreview.frame
                                                  self.add_subview(webview)
                                          

                                          and

                                              def tableview_did_select(self, tableview, section, row):
                                                  # Called when a row was selected.
                                                  try:
                                                      fil = tableview.data_source.items[row]
                                                      i = fil.rfind('.')
                                                      ext = fil.lower()[i:]
                                                      if ext in ['.txt','.dat','.py','.md']:
                                                          with open(fil,'r',encoding='utf-8') as f:
                                                              t = f.read()
                                                          self['textview'].text = t
                                                          self['textview'].bring_to_front()
                                                      elif ext in ['.png','.jpg','.jpeg','.bmp','.tif','.tiff']:
                                                          self['filePreview'].image = ui.Image.named(fil)
                                                          self['filePreview'].bring_to_front()
                                                      elif ext in ['.gif','.htm','.html','.webarchive','.pdf','.mov','.mp3','.wav','.m4a','.mp4','.avi','.doc','.docx','.xls','.xlsx','.pps','.ppt','.gmap']:
                                                          f = sys.argv[0]			# folder of script
                                                          i = fil.rfind('/')
                                                          self['webview'].load_url(abspath(f[:i+1]+fil))
                                                          self['webview'].bring_to_front()
                                                      else:
                                                          self['filePreview'].background_color = 'red'
                                                          self['filePreview'].bring_to_front()
                                                  except Exception as e:
                                                      # not an image
                                                      print(e)
                                                      pass
                                          
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                                          • superrune
                                            superrune last edited by

                                            Thanks @cvp! This is great!

                                            cvp 1 Reply Last reply Reply Quote 0
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