98 lines
3.1 KiB
Python
98 lines
3.1 KiB
Python
import wx, os, math
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from bufferedcanvas import *
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def imagefile(filename):
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return os.path.join(os.path.dirname(__file__), "images", filename)
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def sign(n):
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if n < 0: return -1
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elif n > 0: return 1
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else: return 0
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class ZButtons(BufferedCanvas):
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button_ydistances = [16, 46, 80, 118]
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center = (36, 147)
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def __init__(self, parent, moveCallback=None, homeCallback=None, ID=-1):
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self.bg_bmp = wx.Image(imagefile("control_z.png"),wx.BITMAP_TYPE_PNG).ConvertToBitmap()
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self.range = None
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self.direction = None
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self.orderOfMagnitudeIdx = 0 # 0 means '1', 1 means '10', 2 means '100', etc.
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self.moveCallback = moveCallback
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self.homeCallback = homeCallback
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BufferedCanvas.__init__(self, parent, ID)
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self.SetSize(wx.Size(71, 297))
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# Set up mouse and keyboard event capture
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self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
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self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDown)
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self.Bind(wx.EVT_MOTION, self.OnMotion)
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self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeaveWindow)
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def lookupRange(self, ydist):
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idx = -1
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for d in ZButtons.button_ydistances:
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if ydist < d:
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return idx
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idx += 1
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return None
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def highlight(self, dc, rng, dir):
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assert(rng >= -1 and rng <= 2)
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assert(dir >= -1 and dir <= 1)
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fudge = 10
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x = 0 + fudge
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w = 72 - fudge*2
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if rng == -1:
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y = ZButtons.center[1] - ZButtons.button_ydistances[0]
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h = ZButtons.button_ydistances[0] * 2
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else:
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k = 1 if dir > 0 else 0
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y = ZButtons.center[1] - (dir * ZButtons.button_ydistances[rng+k])
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h = ZButtons.button_ydistances[rng+1] - ZButtons.button_ydistances[rng]
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dc.DrawRectangle(x, y, w, h)
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# self.drawPartialPie(dc, center, r1-inner_ring_radius, r2-inner_ring_radius, a1+fudge, a2-fudge)
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def getRangeDir(self, pos):
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ydelta = ZButtons.center[1] - pos[1]
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return (self.lookupRange(abs(ydelta)), sign(ydelta))
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def OnMotion(self, event):
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oldr, oldd = self.range, self.direction
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mpos = event.GetPosition()
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self.range, self.direction = self.getRangeDir(mpos)
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if oldr != self.range or oldd != self.direction:
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self.update()
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def OnLeftDown(self, event):
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mpos = event.GetPosition()
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r, d = self.getRangeDir(mpos)
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if r >= 0:
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value = math.pow(10, self.orderOfMagnitudeIdx) * math.pow(10, r - 1) * d
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if self.moveCallback:
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self.moveCallback(value)
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else:
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if self.homeCallback:
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self.homeCallback()
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def OnLeaveWindow(self, evt):
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self.range = None
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self.direction = None
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self.update()
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def draw(self, dc):
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dc.SetPen(wx.Pen(wx.Colour(100,100,100,172), 4))
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dc.SetBrush(wx.Brush(wx.Colour(0,0,0,128)))
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dc.DrawBitmap(self.bg_bmp, 0, 0)
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if self.range != None and self.direction != None:
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self.highlight(dc, self.range, self.direction)
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return True
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