| 1 | """ |
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| 2 | A basic widget for showing the progress |
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| 3 | being made in a task. |
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| 4 | |
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| 5 | """ |
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| 6 | |
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| 7 | from Tkinter import * |
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| 8 | |
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| 9 | class ProgressBar: |
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| 10 | def __init__(self, master=None, orientation="horizontal", |
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| 11 | min=0, max=100, width=100, height=18, |
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| 12 | doLabel=1, appearance="sunken", |
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| 13 | fillColor="blue", background="gray", |
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| 14 | labelColor="yellow", labelFont="Verdana", |
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| 15 | labelText="", labelFormat="%d%%", |
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| 16 | value=50, bd=2): |
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| 17 | # preserve various values |
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| 18 | self.master=master |
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| 19 | self.orientation=orientation |
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| 20 | self.min=min |
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| 21 | self.max=max |
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| 22 | self.width=width |
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| 23 | self.height=height |
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| 24 | self.doLabel=doLabel |
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| 25 | self.fillColor=fillColor |
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| 26 | self.labelFont= labelFont |
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| 27 | self.labelColor=labelColor |
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| 28 | self.background=background |
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| 29 | self.labelText=labelText |
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| 30 | self.labelFormat=labelFormat |
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| 31 | self.value=value |
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| 32 | self.frame=Frame(master, relief=appearance, bd=bd) |
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| 33 | self.canvas=Canvas(self.frame, height=height, width=width, bd=0, |
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| 34 | highlightthickness=0, background=background) |
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| 35 | self.scale=self.canvas.create_rectangle(0, 0, width, height, |
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| 36 | fill=fillColor) |
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| 37 | self.label=self.canvas.create_text(self.canvas.winfo_reqwidth() / 2, |
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| 38 | height / 2, text=labelText, |
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| 39 | anchor="c", fill=labelColor, |
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| 40 | font=self.labelFont) |
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| 41 | self.update() |
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| 42 | self.canvas.pack(side='top', fill='x', expand='no') |
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| 43 | |
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| 44 | def updateProgress(self, newValue, newMax=None): |
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| 45 | if newMax: |
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| 46 | self.max = newMax |
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| 47 | self.value = newValue |
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| 48 | self.update() |
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| 49 | |
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| 50 | def update(self): |
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| 51 | # Trim the values to be between min and max |
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| 52 | value=self.value |
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| 53 | if value > self.max: |
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| 54 | value = self.max |
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| 55 | if value < self.min: |
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| 56 | value = self.min |
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| 57 | # Adjust the rectangle |
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| 58 | if self.orientation == "horizontal": |
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| 59 | self.canvas.coords(self.scale, 0, 0, |
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| 60 | float(value) / self.max * self.width, self.height) |
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| 61 | else: |
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| 62 | self.canvas.coords(self.scale, 0, |
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| 63 | self.height - (float(value) / self.max*self.height), |
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| 64 | self.width, self.height) |
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| 65 | # Now update the colors |
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| 66 | self.canvas.itemconfig(self.scale, fill=self.fillColor) |
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| 67 | self.canvas.itemconfig(self.label, fill=self.labelColor) |
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| 68 | # And update the label |
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| 69 | if self.doLabel: |
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| 70 | if value: |
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| 71 | if value >= 0: |
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| 72 | pvalue = int((float(value) / float(self.max)) * 100.0) |
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| 73 | else: |
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| 74 | value = 0 |
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| 75 | self.canvas.itemconfig(self.label, text=self.labelFormat % value) |
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| 76 | else: |
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| 77 | self.canvas.itemconfig(self.label, text='') |
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| 78 | else: |
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| 79 | self.canvas.itemconfig(self.label, text=self.labelFormat % self.labelText) |
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| 80 | self.canvas.update_idletasks() |
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