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driscollisdriscollis
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add more gui examples
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6 files changed

+194
-1
lines changed

‎chapter42_gui/button_events.py‎

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# button_events.py
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import wx
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class MyPanel(wx.Panel):
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def __init__(self, parent):
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super().__init__(parent)
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button = wx.Button(self, label='Press Me')
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button.Bind(wx.EVT_BUTTON, self.on_button1)
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button2 = wx.Button(self, label='Second button')
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button2.Bind(wx.EVT_BUTTON, self.on_button2)
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main_sizer = wx.BoxSizer(wx.HORIZONTAL)
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main_sizer.Add(button, proportion=1,
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flag=wx.ALL | wx.CENTER | wx.EXPAND,
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border=5)
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main_sizer.Add(button2, 0, wx.ALL, 5)
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self.SetSizer(main_sizer)
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def on_button1(self, event):
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print('You clicked the first button')
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def on_button2(self, event):
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print('You clicked the second button')
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class MyFrame(wx.Frame):
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def __init__(self):
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super().__init__(None, title='Hello World')
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panel = MyPanel(self)
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self.Show()
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if __name__ == '__main__':
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app = wx.App(redirect=False)
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frame = MyFrame()
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app.MainLoop()

‎chapter42_gui/hello_wx.py‎

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import wx
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app = wx.App(False)
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frame = wx.Frame(None, title='Hello World')
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frame = wx.Frame(parent=None, title='Hello World')
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frame.Show()
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app.MainLoop()

‎chapter42_gui/hello_wx_class.py‎

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# hello_wx_class.py
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import wx
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class MyFrame(wx.Frame):
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def __init__(self):
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super().__init__(None, title='Hello World')
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self.Show()
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if __name__ == '__main__':
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app = wx.App(False)
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frame = MyFrame()
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frame.Show()
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app.MainLoop()

‎chapter42_gui/image_viewer.py‎

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# image_viewer.py
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import wx
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class ImagePanel(wx.Panel):
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def __init__(self, parent, image_size):
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super().__init__(parent)
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img = wx.Image(*image_size)
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self.image_ctrl = wx.StaticBitmap(self,
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bitmap=wx.Bitmap(img))
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browse_btn = wx.Button(self, label='Browse')
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main_sizer = wx.BoxSizer(wx.VERTICAL)
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main_sizer.Add(self.image_ctrl, 0, wx.ALL, 5)
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main_sizer.Add(browse_btn)
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self.SetSizer(main_sizer)
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main_sizer.Fit(parent)
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self.Layout()
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class MainFrame(wx.Frame):
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def __init__(self):
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super().__init__(None, title='Image Viewer')
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panel = ImagePanel(self, image_size=(240,240))
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self.Show()
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if __name__ == '__main__':
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app = wx.App(redirect=False)
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frame = MainFrame()
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app.MainLoop()

‎chapter42_gui/image_viewer_working.py‎

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# image_viewer_working.py
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import wx
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class ImagePanel(wx.Panel):
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def __init__(self, parent, image_size):
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super().__init__(parent)
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self.max_size = 240
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img = wx.Image(*image_size)
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self.image_ctrl = wx.StaticBitmap(self,
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bitmap=wx.Bitmap(img))
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browse_btn = wx.Button(self, label='Browse')
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browse_btn.Bind(wx.EVT_BUTTON, self.on_browse)
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self.photo_txt = wx.TextCtrl(self, size=(200, -1))
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main_sizer = wx.BoxSizer(wx.VERTICAL)
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hsizer = wx.BoxSizer(wx.HORIZONTAL)
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main_sizer.Add(self.image_ctrl, 0, wx.ALL, 5)
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hsizer.Add(browse_btn, 0, wx.ALL, 5)
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hsizer.Add(self.photo_txt, 0, wx.ALL, 5)
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main_sizer.Add(hsizer, 0, wx.ALL, 5)
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self.SetSizer(main_sizer)
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main_sizer.Fit(parent)
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self.Layout()
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def on_browse(self, event):
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"""
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Browse for an image file
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@param event: The event object
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"""
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wildcard = "JPEG files (*.jpg)|*.jpg"
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with wx.FileDialog(None, "Choose a file",
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wildcard=wildcard,
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style=wx.ID_OPEN) as dialog:
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if dialog.ShowModal() == wx.ID_OK:
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self.photo_txt.SetValue(dialog.GetPath())
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self.load_image()
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def load_image(self):
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"""
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Load the image and display it to the user
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"""
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filepath = self.photo_txt.GetValue()
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img = wx.Image(filepath, wx.BITMAP_TYPE_ANY)
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# scale the image, preserving the aspect ratio
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W = img.GetWidth()
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H = img.GetHeight()
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if W > H:
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NewW = self.max_size
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NewH = self.max_size * H / W
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else:
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NewH = self.max_size
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NewW = self.max_size * W / H
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img = img.Scale(NewW,NewH)
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self.image_ctrl.SetBitmap(wx.Bitmap(img))
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self.Refresh()
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class MainFrame(wx.Frame):
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def __init__(self):
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super().__init__(None, title='Image Viewer')
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panel = ImagePanel(self, image_size=(240,240))
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self.Show()
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if __name__ == '__main__':
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app = wx.App(redirect=False)
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frame = MainFrame()
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app.MainLoop()

‎chapter42_gui/stacked_buttons.py‎

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# stacked_buttons.py
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import wx
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class MyPanel(wx.Panel):
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def __init__(self, parent):
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super().__init__(parent)
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button = wx.Button(self, label='Press Me')
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button2 = wx.Button(self, label='Press Me too')
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button3 = wx.Button(self, label='Another button')
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class MyFrame(wx.Frame):
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def __init__(self):
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super().__init__(None, title='Hello World')
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panel = MyPanel(self)
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self.Show()
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if __name__ == '__main__':
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app = wx.App(redirect=False)
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frame = MyFrame()
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app.MainLoop()

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