mirror of https://github.com/python/cpython
Generalized.
This commit is contained in:
Guido van Rossum
parent
ceae528b9f
commit
4de12876a9
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@ -1,13 +1,13 @@
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# Module 'Sliders'
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#
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# Sliders are somewhat like buttons but have an extra hook that is
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# called whenever their value is changed.
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# XXX Should split caller interface, appearance and reactivity better
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import stdwin
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from stdwinevents import *
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import rect
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from minmax import min, max
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from Buttons import ClassicButton
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from Buttons import *
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# Field indices in event detail
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@ -22,37 +22,7 @@ _MASK = 3
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# It looks like a button but dragging the mouse left or right
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# changes the controlled value.
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#
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class DragSlider() = ClassicButton():
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#
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# INVARIANTS maintained by the define and setval methods:
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#
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# self.min <= self.val <= self.max
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# self.text = `self.val`
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#
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# (Notice that unlike in Python ranges, the end point belongs
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# to the range.)
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#
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def define(self, (win, bounds)):
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self.min = 0
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self.val = 50
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self.max = 100
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self.setval_hook = 0
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self.pretext = self.postext = ''
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self.text = self.pretext + `self.val` + self.postext
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self = ClassicButton.define(self, (win, bounds, self.text))
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return self
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#
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def setval(self, val):
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val = min(self.max, max(self.min, val))
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if val <> self.val:
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self.val = val
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self.text = self.pretext + `self.val` + self.postext
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if self.setval_hook:
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self.setval_hook(self)
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self.redraw()
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#
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def settext(self, text):
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pass # shouldn't be called at all
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class DragSliderReactivity() = NoReactivity():
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#
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def mouse_down(self, detail):
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h, v = hv = detail[_HV]
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@ -72,3 +42,137 @@ class DragSlider() = ClassicButton():
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self.setval(self.oldval + (h - self.anchor))
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self.active = 0
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#
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class DragSliderAppearance() = ButtonAppearance():
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#
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def define(self, (win, bounds)):
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self.min = 0
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self.val = -1 # Changed by next setval call
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self.max = 100
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self.setval_hook = 0
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self.pretext = self.postext = ''
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self = ClassicButton.define(self, (win, bounds, ''))
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self.setval(50)
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return self
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#
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# INVARIANTS maintained by the setval method:
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#
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# self.min <= self.val <= self.max
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# self.text = self.pretext + `self.val` + self.postext
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#
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# (Notice that unlike in Python ranges, the end point belongs
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# to the range.)
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#
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def setval(self, val):
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val = min(self.max, max(self.min, val))
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if val <> self.val:
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self.val = val
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self.setval_trigger()
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# (The trigger may change val, pretext and postext)
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self.settext(self.pretext + `self.val` + self.postext)
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#
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def setval_trigger(self):
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if self.setval_hook:
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self.setval_hook(self)
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#
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class DragSlider() = DragSliderReactivity(), DragSliderAppearance(): pass
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# Auxiliary class for DragSlider incorporated in ComplexSlider
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#
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class _SubDragSlider() = DragSlider():
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def define(self, (win, bounds, parent)):
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self.parent = parent
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return DragSlider.define(self, (win, bounds))
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def setval_trigger(self):
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self.parent.val = self.val
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self.parent.setval_trigger()
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# Auxiliary class for ClassicButton incorporated in ComplexSlider
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#
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class _SubClassicButton() = ClassicButton():
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def define(self, (win, bounds, text, step, parent)):
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self.parent = parent
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self.step = step
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return ClassicButton.define(self, (win, bounds, text))
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def down_trigger(self):
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self.parent.setval(self.parent.val + self.step)
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self.delay = 5
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self.win.settimer(self.delay)
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def move_trigger(self):
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self.win.settimer(self.delay)
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def timer_trigger(self):
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self.delay = 1
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self.parent.setval(self.parent.val + self.step)
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self.win.settimer(self.delay)
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# A complex slider is a wrapper around three buttons:
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# One to step down, a dragslider, and one to step up.
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#
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class ComplexSlider() = LabelAppearance(), NoReactivity():
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#
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def define(self, (win, bounds)):
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#
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self.win = win
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self.bounds = bounds
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self.setval_hook = 0
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#
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(left, top), (right, bottom) = bounds
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size = bottom - top
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#
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downbox = (left, top), (left+size, bottom)
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sliderbox = (left+size, top), (right-size, bottom)
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upbox = (right-size, top), (right, bottom)
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#
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self.downbutton = \
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_SubClassicButton().define(win, downbox, '-', -1, self)
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#
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self.sliderbutton = \
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_SubDragSlider().define(win, sliderbox, self)
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#
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self.upbutton = \
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_SubClassicButton().define(win, upbox, '+', 1, self)
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#
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self.min = self.sliderbutton.min
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self.val = self.sliderbutton.val
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self.max = self.sliderbutton.max
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self.pretext = self.sliderbutton.pretext
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self.postext = self.sliderbutton.postext
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#
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self.children = \
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[self.downbutton, self.sliderbutton, self.upbutton]
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#
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return self
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#
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def mouse_down(self, detail):
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for b in self.children:
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b.mouse_down(detail)
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#
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def mouse_move(self, detail):
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for b in self.children:
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b.mouse_move(detail)
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#
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def mouse_up(self, detail):
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for b in self.children:
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b.mouse_up(detail)
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#
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def timer(self):
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for b in self.children:
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b.timer()
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#
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def draw(self, area):
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for b in self.children:
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b.draw(area)
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#
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def setval(self, val):
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self.sliderbutton.min = self.min
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self.sliderbutton.max = self.max
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self.sliderbutton.pretext = self.pretext
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self.sliderbutton.postext = self.postext
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self.sliderbutton.setval(val)
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#
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def setval_trigger(self):
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if self.setval_hook:
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self.setval_hook(self)
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#
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@ -1,13 +1,13 @@
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# Module 'Sliders'
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#
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# Sliders are somewhat like buttons but have an extra hook that is
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# called whenever their value is changed.
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# XXX Should split caller interface, appearance and reactivity better
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import stdwin
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from stdwinevents import *
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import rect
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from minmax import min, max
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from Buttons import ClassicButton
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from Buttons import *
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# Field indices in event detail
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@ -22,37 +22,7 @@ _MASK = 3
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# It looks like a button but dragging the mouse left or right
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# changes the controlled value.
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#
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class DragSlider() = ClassicButton():
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#
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# INVARIANTS maintained by the define and setval methods:
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#
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# self.min <= self.val <= self.max
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# self.text = `self.val`
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#
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# (Notice that unlike in Python ranges, the end point belongs
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# to the range.)
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#
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def define(self, (win, bounds)):
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self.min = 0
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self.val = 50
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self.max = 100
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self.setval_hook = 0
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self.pretext = self.postext = ''
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self.text = self.pretext + `self.val` + self.postext
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self = ClassicButton.define(self, (win, bounds, self.text))
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return self
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#
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def setval(self, val):
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val = min(self.max, max(self.min, val))
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if val <> self.val:
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self.val = val
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self.text = self.pretext + `self.val` + self.postext
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if self.setval_hook:
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self.setval_hook(self)
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self.redraw()
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#
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def settext(self, text):
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pass # shouldn't be called at all
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class DragSliderReactivity() = NoReactivity():
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#
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def mouse_down(self, detail):
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h, v = hv = detail[_HV]
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@ -72,3 +42,137 @@ class DragSlider() = ClassicButton():
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self.setval(self.oldval + (h - self.anchor))
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self.active = 0
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#
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class DragSliderAppearance() = ButtonAppearance():
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#
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def define(self, (win, bounds)):
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self.min = 0
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self.val = -1 # Changed by next setval call
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self.max = 100
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self.setval_hook = 0
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self.pretext = self.postext = ''
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self = ClassicButton.define(self, (win, bounds, ''))
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self.setval(50)
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return self
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#
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# INVARIANTS maintained by the setval method:
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#
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# self.min <= self.val <= self.max
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# self.text = self.pretext + `self.val` + self.postext
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#
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# (Notice that unlike in Python ranges, the end point belongs
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# to the range.)
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#
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def setval(self, val):
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val = min(self.max, max(self.min, val))
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if val <> self.val:
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self.val = val
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self.setval_trigger()
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# (The trigger may change val, pretext and postext)
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self.settext(self.pretext + `self.val` + self.postext)
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#
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def setval_trigger(self):
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if self.setval_hook:
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self.setval_hook(self)
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#
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class DragSlider() = DragSliderReactivity(), DragSliderAppearance(): pass
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# Auxiliary class for DragSlider incorporated in ComplexSlider
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#
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class _SubDragSlider() = DragSlider():
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def define(self, (win, bounds, parent)):
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self.parent = parent
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return DragSlider.define(self, (win, bounds))
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def setval_trigger(self):
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self.parent.val = self.val
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self.parent.setval_trigger()
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# Auxiliary class for ClassicButton incorporated in ComplexSlider
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#
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class _SubClassicButton() = ClassicButton():
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def define(self, (win, bounds, text, step, parent)):
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self.parent = parent
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self.step = step
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return ClassicButton.define(self, (win, bounds, text))
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def down_trigger(self):
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self.parent.setval(self.parent.val + self.step)
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self.delay = 5
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self.win.settimer(self.delay)
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def move_trigger(self):
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self.win.settimer(self.delay)
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def timer_trigger(self):
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self.delay = 1
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self.parent.setval(self.parent.val + self.step)
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self.win.settimer(self.delay)
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# A complex slider is a wrapper around three buttons:
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# One to step down, a dragslider, and one to step up.
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#
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class ComplexSlider() = LabelAppearance(), NoReactivity():
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#
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def define(self, (win, bounds)):
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#
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self.win = win
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self.bounds = bounds
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self.setval_hook = 0
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#
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(left, top), (right, bottom) = bounds
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size = bottom - top
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#
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downbox = (left, top), (left+size, bottom)
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sliderbox = (left+size, top), (right-size, bottom)
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upbox = (right-size, top), (right, bottom)
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#
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self.downbutton = \
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_SubClassicButton().define(win, downbox, '-', -1, self)
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#
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self.sliderbutton = \
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_SubDragSlider().define(win, sliderbox, self)
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#
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self.upbutton = \
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_SubClassicButton().define(win, upbox, '+', 1, self)
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#
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self.min = self.sliderbutton.min
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self.val = self.sliderbutton.val
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self.max = self.sliderbutton.max
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self.pretext = self.sliderbutton.pretext
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self.postext = self.sliderbutton.postext
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#
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self.children = \
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[self.downbutton, self.sliderbutton, self.upbutton]
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#
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return self
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#
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def mouse_down(self, detail):
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for b in self.children:
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b.mouse_down(detail)
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#
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def mouse_move(self, detail):
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for b in self.children:
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b.mouse_move(detail)
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#
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def mouse_up(self, detail):
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for b in self.children:
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b.mouse_up(detail)
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#
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def timer(self):
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for b in self.children:
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b.timer()
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#
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def draw(self, area):
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for b in self.children:
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b.draw(area)
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#
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def setval(self, val):
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self.sliderbutton.min = self.min
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self.sliderbutton.max = self.max
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self.sliderbutton.pretext = self.pretext
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self.sliderbutton.postext = self.postext
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self.sliderbutton.setval(val)
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#
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def setval_trigger(self):
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if self.setval_hook:
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self.setval_hook(self)
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#
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