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https://github.com/rzzzwilson/pymlac.git
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Make it more lightweight
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Ross Wilson
parent
ad6a102992
commit
f205f712b7
130
pymlac/led16.py
130
pymlac/led16.py
@ -8,36 +8,25 @@ Event attributes:
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'state' - the current displayed value (int)
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Instance methods:
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Led16(parent, label, pos, led, *args, **kwargs)
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Led16(parent, label, pos, led_on, led_off, *args, **kwargs)
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parent owning widget
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label label above leftmost led
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pos position (x, y)
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led image of led 'on' state
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led_on image of led 'on' state
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led_off image of led 'off' state
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args ?
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kwargs ?
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SetState(state)
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sets widget state, 'state' is as in constructor.
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sets widget state, 'state' is a 16 bit value.
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The widget will look like:
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+-<title>----------------------------+
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| <TopSpacer> |
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LeftSpacer--+-> O O O O O O O O O O O O O O O O |\TickSpacer
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| +-+-----+-----+-----+-----+-----+ |/
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| <BotSpacer> |
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+------------------------------------+
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-
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|top spacer
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-
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|-------------|<label> --label spacer
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left spacer /
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O O O O O O O O O O O O O O O O --tick spacer
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+-+-----+-----+-----+-----+-----+ /
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- ^
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|bot spacer |
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- octal ticks
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+-----------------------------------+
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| <TopSpacer> |
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<LeftSpacer>--> O O O O O O O O O O O O O O O O <---<RightSpacer>
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| +-+-----+-----+-----+-----+-----+ |
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| <BotSpacer> |
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+-----------------------------------+
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"""
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import os
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@ -45,19 +34,21 @@ import wx
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# layout 'constants'
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print('os.name=%s' % str(os.name))
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if os.name == 'nt':
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LeftSpacer = 7 # left border
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TopSpacer = 30
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TickSpacer = 30
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BotSpacer = 0 # space between ticks and box
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RightSpacer = 7 # right border
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TopSpacer = 30 # space at top
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TickSpacer = 30 # space down to ticks
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BotSpacer = 0 # space at the bottom
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elif os.name == 'posix':
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LeftSpacer = 3 # left border
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TopSpacer = 10 # space between top box and label
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LabelSpacer = 10
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TickSpacer = 30
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BotSpacer = 10 # space between ticks and box
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RightSpacer = 3 # right border
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TopSpacer = 3 # space at top
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TickSpacer = 10 # space down to ticks
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BotSpacer = 3 # space at the bottom
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else:
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# TODO: Make it work on Mac
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# TODO: Make it work on ???
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raise Exception('Unrecognized platform: %s' % os.name)
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@ -68,82 +59,79 @@ else:
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class Led16(wx.Panel):
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"""A custom widget for showing 16 leds."""
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def __init__(self, parent, label, led_img, background=None, *args, **kwargs):
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def __init__(self, parent, led_on, led_off, background=None, **kwargs):
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"""Initialize an Led16 object.
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parent owning widget
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label label above leftmost led
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led_img image of led 'on' state
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led_on image of led 'on' state
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led_off image of led 'off' state
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background widget background colour
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args ?
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kwargs ?
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kwargs extra args for the panel
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"""
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wx.Panel.__init__(self, parent, *args, **kwargs)
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self.SetBackgroundColour(background)
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print('Led16: background=%s' % str(background))
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wx.Panel.__init__(self, parent, **kwargs)
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if background is not None:
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self.SetBackgroundColour(background)
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self.led_on = led_on
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self.led_off = led_off
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led_width = led_on.GetWidth() # assume ON and OFF are same size image
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led_height = led_on.GetHeight()
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x = LeftSpacer
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y = TopSpacer
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led_width = led_img.GetWidth()
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led_height = led_img.GetHeight()
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label = ' ' + label.strip() + ' '
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sbox = wx.StaticBox(self, label=label)
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vbox = wx.StaticBoxSizer(sbox, wx.VERTICAL)
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vbox.AddSpacer(BotSpacer)
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y += LabelSpacer
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#hbox = wx.BoxSizer(wx.HORIZONTAL)
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self.leds = []
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mark_count = 2
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self.ticks = [(x-17+led_width, y+led_height/2+5,
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x-17+led_width, y+led_height/2+10)]
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self.led_posn = []
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# calculate positions of all 16 LEDs and construct ticks draw list
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for i in range(16):
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led = wx.StaticBitmap(self, -1, led_img, pos=(x-1+i*17, y))
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#hbox.Add(led)
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self.leds.append(led)
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self.led_posn.append((x-1+i*17, y))
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mark_count += 1
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if mark_count >= 3:
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mark_count = 0
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self.ticks.append((x+i*17 + led_width, y+led_height/2+5,
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x+i*17 + led_width, y+led_height/2+10))
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vbox.Add(hbox)
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first = self.ticks[0]
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last = self.ticks[-1]
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(fx1, fy1, fx2, fy2) = first
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(lx1, ly1, lx2, ly2) = last
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self.ticks.append((fx1, ly1+5, lx1, ly1+5))
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vbox.AddSpacer(BotSpacer)
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self.set_value(0)
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self.SetSizer(vbox)
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self.Bind(wx.EVT_PAINT, self.OnPaint)
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self.Bind(wx.EVT_SIZE, self.OnSize)
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def OnPaint(self, event):
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# allow transparent colours
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dc = wx.PaintDC(self)
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dc = wx.GCDC(dc)
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# draw 16 on/off LEDs
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mask = 0x8000
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for i in range(16):
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posn = self.led_posn[i]
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if self.value & mask:
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wx.StaticBitmap(self, -1, self.led_on, pos=posn)
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else:
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wx.StaticBitmap(self, -1, self.led_off, pos=posn)
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mask = mask >> 1
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# draw the tick marks underneath the LEDs
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dc.SetPen(wx.Pen('black', 1))
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dc.DrawLineList(self.ticks)
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def OnSize(self, event):
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self.Refresh()
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def set_value(self, value):
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mask = 0x8000
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for l in self.leds:
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if value & mask:
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l.Enable()
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else:
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l.Disable()
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mask = mask >> 1
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self.value = value
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self.Refresh()
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if __name__ == "__main__":
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@ -154,14 +142,18 @@ if __name__ == "__main__":
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frame = wx.Frame(None, -1, "Test Led16", size=(350, 75))
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vbox = wx.BoxSizer(wx.VERTICAL)
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led = wx.Image('images/led_on.png', wx.BITMAP_TYPE_PNG).ConvertToBitmap()
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led_on = wx.Image('images/led_on.png',
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wx.BITMAP_TYPE_PNG).ConvertToBitmap()
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self.led16 = Led16(frame, 'Led16', led, size=(300,100))
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led_off = wx.Image('images/led_off.png',
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wx.BITMAP_TYPE_PNG).ConvertToBitmap()
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self.led16 = Led16(frame, led_on, led_off, size=(300,100))
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vbox.Add(self.led16)
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vbox.Fit(frame)
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frame.Show(True)
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self.SetTopWindow(frame)
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self.led16.set_value(0xfffe)
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self.led16.set_value(012345)
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return True
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app = MyApp(0)
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