91 lines
2.5 KiB
Python
91 lines
2.5 KiB
Python
'''
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Monitor module
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==============
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The Monitor module is a toolbar that shows the activity of your current
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application :
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* FPS
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* Graph of input events
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Usage
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-----
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For normal module usage, please see the :mod:`~kivy.modules` documentation.
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'''
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__all__ = ('start', 'stop')
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from kivy.uix.label import Label
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from kivy.graphics import Rectangle, Color
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from kivy.metrics import dp
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from kivy.clock import Clock
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from functools import partial
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_statsinput = 0
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_maxinput = -1
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def update_fps(ctx, *largs):
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ctx.label.text = 'FPS: %f' % Clock.get_fps()
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ctx.rectangle.texture = ctx.label.texture
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ctx.rectangle.size = ctx.label.texture_size
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def update_stats(win, ctx, *largs):
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global _statsinput
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ctx.stats = ctx.stats[1:] + [_statsinput]
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_statsinput = 0
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m = max(1., _maxinput)
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for i, x in enumerate(ctx.stats):
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ctx.statsr[i].size = (dp(4), ctx.stats[i] / m * dp(20))
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ctx.statsr[i].pos = (
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win.width - dp(64 * 4) + i * dp(4), win.height - dp(25))
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def _update_monitor_canvas(win, ctx, *largs):
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with win.canvas.after:
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ctx.overlay.pos = (0, win.height - dp(25))
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ctx.overlay.size = (win.width, dp(25))
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ctx.rectangle.pos = (dp(5), win.height - dp(20))
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class StatsInput(object):
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def process(self, events):
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global _statsinput, _maxinput
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_statsinput += len(events)
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if _statsinput > _maxinput:
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_maxinput = float(_statsinput)
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return events
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def start(win, ctx):
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# late import to avoid breaking module loading
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from kivy.input.postproc import kivy_postproc_modules
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kivy_postproc_modules['fps'] = StatsInput()
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global _ctx
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ctx.label = Label(text='FPS: 0.0')
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ctx.inputstats = 0
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ctx.stats = []
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ctx.statsr = []
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with win.canvas.after:
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ctx.color = Color(1, 0, 0, .5)
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ctx.overlay = Rectangle(pos=(0, win.height - dp(25)),
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size=(win.width, dp(25)))
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ctx.color = Color(1, 1, 1)
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ctx.rectangle = Rectangle(pos=(dp(5), win.height - dp(20)))
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ctx.color = Color(1, 1, 1, .5)
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for i in range(64):
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ctx.stats.append(0)
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ctx.statsr.append(Rectangle(
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pos=(win.width - dp(64 * 4) + i * dp(4), win.height - dp(25)),
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size=(dp(4), 0)))
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win.bind(size=partial(_update_monitor_canvas, win, ctx))
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Clock.schedule_interval(partial(update_fps, ctx), .5)
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Clock.schedule_interval(partial(update_stats, win, ctx), 1 / 60.)
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def stop(win, ctx):
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win.canvas.remove(ctx.label)
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