mirror of
https://github.com/python/cpython
synced 2024-09-15 21:30:15 +00:00
Generalizations.
This commit is contained in:
Guido van Rossum
parent
f49ef1cad0
commit
ceae528b9f
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@ -1,8 +1,4 @@
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# Module 'Buttons' -- see README
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#
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# Module functionality is now split in two parts:
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# - 'appearance' defines what it looks like
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# - 'reactivity' defines how it acts to mouse events
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# Module 'Buttons'
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# Import module 'rect' renamed as '_rect'
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@ -20,32 +16,42 @@
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_MASK = 3
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# BaseAppearance provides defaults for all appearance methods.
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# In fact it looks like a label.
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# LabelAppearance provides defaults for all appearance methods.
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# selected state not visible
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# disabled --> crossed out
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# hilited --> inverted
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#
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class BaseAppearance():
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class LabelAppearance():
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#
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# Initialization
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#
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def init_appearance(self, (win, bounds)):
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win.change(bounds)
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self.win = win
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self.bounds = bounds
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self.enabled = 1
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self.hilited = 0
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self.selected = 0
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self.text = ''
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self.limbo = 1
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self.recalc()
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self.win.change(self.bounds)
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# While the limbo flag is set, redraw calls are ignored.
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# It is cleared by the first draw event.
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# This is intended to avoid duplicate drawing during
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# initialization.
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#
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# Changing the parameters
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#
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def settext(self, text):
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self.text = text
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self.recalctextpos()
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self.redraw()
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#
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def setbounds(self, bounds):
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# This elays drawing until after all buttons are moved
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# This delays drawing until after all buttons are moved
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self.win.change(self.bounds)
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self.bounds = bounds
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self.recalc()
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self.win.change(bounds)
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#
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# Changing the state bits
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@ -53,25 +59,54 @@ def setbounds(self, bounds):
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def enable(self, flag):
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if flag <> self.enabled:
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self.enabled = flag
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self.flipenable(self.win.begindrawing())
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if not self.limbo:
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self.flipenable(self.win.begindrawing())
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#
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def hilite(self, flag):
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if flag <> self.hilited:
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self.hilited = flag
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self.fliphilite(self.win.begindrawing())
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if not self.limbo:
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self.fliphilite(self.win.begindrawing())
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#
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def select(self, flag):
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if flag <> self.selected:
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self.selected = flag
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self.redraw()
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#
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# Recalculate the box bounds and text position.
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# This can be overridden by buttons that draw different boxes
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# or want their text in a different position.
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#
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def recalc(self):
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self.recalcbounds()
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self.recalctextpos()
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#
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def recalcbounds(self):
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self.hilitebounds = _rect.inset(self.bounds, (3, 3))
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self.crossbounds = self.bounds
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#
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def recalctextpos(self):
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(left, top), (right, bottom) = self.bounds
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d = self.win.begindrawing()
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h = (left + right - d.textwidth(self.text)) / 2
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v = (top + bottom - d.lineheight()) / 2
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self.textpos = h, v
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#
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# Resize method.
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# Override for widgets that take over window geomtry management.
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#
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def resize(self):
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pass
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#
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# Generic drawing mechanism.
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# There should be no reason to override redraw() or draw() methods.
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# Do not override redraw() or draw() methods; override drawit() c.s.
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#
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def redraw(self):
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self.draw(self.win.begindrawing(), self.bounds)
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if not self.limbo:
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self.draw(self.win.begindrawing(), self.bounds)
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#
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def draw(self, (d, area)):
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self.limbo = 0
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area = _rect.intersect(area, self.bounds)
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if area = _rect.empty:
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return
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@ -83,10 +118,9 @@ def draw(self, (d, area)):
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# The drawit() method is fairly generic but may be overridden.
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#
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def drawit(self, d):
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self.drawpict(d) # Box, circle etc.; also 'selected'
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self.drawpict(d)
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if self.text:
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hv = self.textpos(d)
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d.text(hv, self.text)
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d.text(self.textpos, self.text)
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if not self.enabled:
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self.flipenable(d)
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if self.hilited:
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@ -95,52 +129,15 @@ def drawit(self, d):
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# Default drawing detail functions.
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# Overriding these is normally sufficient to get different
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# appearances.
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# No picture; centered text; enable crosses out; hilite inverts.
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#
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def drawpict(self, d):
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pass
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#
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def textpos(self, d):
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# XXX shouldn't this be done once by init/settext()?
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(left, top), (right, bottom) = self.bounds
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h = (left + right - d.textwidth(self.text)) / 2
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v = (top + bottom - d.lineheight()) / 2
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return h, v
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#
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def flipenable(self, d):
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_xorcross(d, self.bounds)
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_xorcross(d, self.crossbounds)
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#
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def fliphilite(self, d):
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d.invert(_rect.inset(self.bounds, (3, 3)))
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# Subroutine to cross out a rectangle.
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#
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def _xorcross(d, bounds):
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((left, top), (right, bottom)) = bounds
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left = left + 2
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right = right - 2
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top = top + 2
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bottom = bottom - 3
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d.xorline(((left, top), (right, bottom)))
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d.xorline((left, bottom), (right, top))
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# LabelAppearance displays a centered string.
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# selected --> underlined
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# disabled --> crossed out
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# hilited --> inverted
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#
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class LabelAppearance() = BaseAppearance():
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#
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def drawpict(self, d):
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if self.selected:
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# Underline it
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d.line((left+1, bottom-1), (right-1, bottom-1))
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#
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if not self.enabled: self._crossout(d)
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if self.hilited: self._invert(d)
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#
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d.invert(self.hilitebounds)
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# ButtonAppearance displays a centered string in a box.
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@ -148,7 +145,7 @@ def drawpict(self, d):
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# disabled --> crossed out
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# hilited --> inverted
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#
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class ButtonAppearance() = BaseAppearance():
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class ButtonAppearance() = LabelAppearance():
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#
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def drawpict(self, d):
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d.box(_rect.inset(self.bounds, (1, 1)))
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@ -165,27 +162,25 @@ def drawpict(self, d):
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# disabled --> whole button crossed out
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# hilited --> box is inverted
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#
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class CheckAppearance() = BaseAppearance():
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class CheckAppearance() = LabelAppearance():
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#
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def drawpict(self, d):
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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boxbounds = (left, top), (left+size, bottom)
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d.box(boxbounds)
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if self.selected: _xorcross(d, boxbounds)
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d.box(self.boxbounds)
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if self.selected: _xorcross(d, self.boxbounds)
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#
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def textpos(self, d):
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def recalcbounds(self):
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LabelAppearance.recalcbounds(self)
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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h = left + size + d.textwidth(' ')
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v = top + (size - d.lineheight()) / 2
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return h, v
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self.size = bottom - top - 4
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self.boxbounds = (left+2, top+2), (left+2+self.size, bottom-2)
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self.hilitebounds = self.boxbounds
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#
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def fliphilite(self, d):
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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boxbounds = (left, top), (left+size, bottom)
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d.invert(boxbounds)
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def recalctextpos(self):
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d = self.win.begindrawing()
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(left, top), (right, bottom) = self.boxbounds
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h = right + d.textwidth(' ')
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v = top + (self.size - d.lineheight()) / 2
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self.textpos = h, v
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#
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@ -194,37 +189,24 @@ def fliphilite(self, d):
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# disabled --> whole button crossed out
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# hilited --> indicator is inverted
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#
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class RadioAppearance() = BaseAppearance():
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class RadioAppearance() = CheckAppearance():
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#
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def drawpict(self, d):
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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radius = size / 2
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(left, top), (right, bottom) = self.boxbounds
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radius = self.size / 2
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h, v = left + radius, top + radius
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d.circle((h, v), radius - 1)
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d.circle((h, v), radius)
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if self.selected:
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some = radius/3
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d.paint((h-some, v-some), (h+some, v+some))
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#
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def textpos(self, d):
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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h = left + size + d.textwidth(' ')
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v = top + (size - d.lineheight()) / 2
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return h, v
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#
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def fliphilite(self, d):
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(left, top), (right, bottom) = self.bounds
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size = bottom - top
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d.invert((left, top), (left + size, bottom))
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#
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# NoReactivity ignores mouse and timer events.
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# The trigger methods call the corresponding hooks set by the user.
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# Hooks (and triggers) mean the following:
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# down_hook called on some mouse-down events
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# active_hook called on some mouse-move events
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# move_hook called on some mouse-move events
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# up_hook called on mouse-up events
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# on_hook called for buttons with on/off state, when it goes on
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# timer_hook called on timer events
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@ -235,7 +217,7 @@ def fliphilite(self, d):
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class NoReactivity():
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#
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def init_reactivity(self):
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self.down_hook = self.active_hook = self.up_hook = \
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self.down_hook = self.move_hook = self.up_hook = \
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self.on_hook = self.off_hook = self.timer_hook = \
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self.hook = self.active = 0
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#
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@ -257,8 +239,8 @@ def timer(self):
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def down_trigger(self):
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if self.down_hook: self.down_hook(self)
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#
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def active_trigger(self):
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if self.active_hook: self.active_hook(self)
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def move_trigger(self):
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if self.move_hook: self.move_hook(self)
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#
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def up_trigger(self):
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if self.up_hook: self.up_hook(self)
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@ -290,7 +272,7 @@ def mouse_down(self, detail):
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#
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def mouse_move(self, detail):
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if self.active:
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self.active_trigger()
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self.move_trigger()
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#
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def mouse_up(self, detail):
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if self.active:
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@ -325,7 +307,7 @@ def mouse_move(self, detail):
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if self.active:
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self.hilite(self.mousetest(detail[_HV]))
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if self.hilited:
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self.active_trigger()
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self.move_trigger()
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#
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def mouse_up(self, detail):
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if self.active:
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@ -338,7 +320,7 @@ def mouse_up(self, detail):
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#
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def timer(self):
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if self.active and self.hilited:
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self.active_trigger()
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self.timer_trigger()
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#
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@ -382,14 +364,27 @@ class Define():
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#
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def define(self, (win, bounds, text)):
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self.init_appearance(win, bounds)
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self.text = text
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self.init_reactivity()
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self.settext(text)
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return self
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# Subroutine to cross out a rectangle.
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#
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def _xorcross(d, bounds):
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((left, top), (right, bottom)) = bounds
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# This is s bit funny to make it look better
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left = left + 2
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right = right - 2
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top = top + 2
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bottom = bottom - 3
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d.xorline(((left, top), (right, bottom)))
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d.xorline((left, bottom), (right, top))
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# Ready-made button classes
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#
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class BaseButton() = NoReactivity(), BaseAppearance(), Define(): pass
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class BaseButton() = NoReactivity(), LabelAppearance(), Define(): pass
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class Label() = NoReactivity(), LabelAppearance(), Define(): pass
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class ClassicButton() = TriggerReactivity(), ButtonAppearance(), Define(): pass
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class CheckButton() = CheckReactivity(), CheckAppearance(), Define(): pass
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@ -1,8 +1,4 @@
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# Module 'Buttons' -- see README
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#
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# Module functionality is now split in two parts:
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# - 'appearance' defines what it looks like
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# - 'reactivity' defines how it acts to mouse events
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# Module 'Buttons'
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# Import module 'rect' renamed as '_rect'
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@ -20,32 +16,42 @@
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_MASK = 3
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|
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|
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# BaseAppearance provides defaults for all appearance methods.
|
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# In fact it looks like a label.
|
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# LabelAppearance provides defaults for all appearance methods.
|
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# selected state not visible
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# disabled --> crossed out
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# hilited --> inverted
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#
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class BaseAppearance():
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class LabelAppearance():
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#
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# Initialization
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#
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def init_appearance(self, (win, bounds)):
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win.change(bounds)
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self.win = win
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self.bounds = bounds
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self.enabled = 1
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self.hilited = 0
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self.selected = 0
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self.text = ''
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self.limbo = 1
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self.recalc()
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self.win.change(self.bounds)
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# While the limbo flag is set, redraw calls are ignored.
|
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# It is cleared by the first draw event.
|
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# This is intended to avoid duplicate drawing during
|
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# initialization.
|
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#
|
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# Changing the parameters
|
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#
|
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def settext(self, text):
|
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self.text = text
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self.recalctextpos()
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self.redraw()
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#
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def setbounds(self, bounds):
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# This elays drawing until after all buttons are moved
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# This delays drawing until after all buttons are moved
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self.win.change(self.bounds)
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self.bounds = bounds
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self.recalc()
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self.win.change(bounds)
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#
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# Changing the state bits
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|
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@ -53,25 +59,54 @@ def setbounds(self, bounds):
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def enable(self, flag):
|
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if flag <> self.enabled:
|
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self.enabled = flag
|
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self.flipenable(self.win.begindrawing())
|
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if not self.limbo:
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self.flipenable(self.win.begindrawing())
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#
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def hilite(self, flag):
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if flag <> self.hilited:
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self.hilited = flag
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self.fliphilite(self.win.begindrawing())
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if not self.limbo:
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self.fliphilite(self.win.begindrawing())
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#
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def select(self, flag):
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if flag <> self.selected:
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self.selected = flag
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self.redraw()
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#
|
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# Recalculate the box bounds and text position.
|
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# This can be overridden by buttons that draw different boxes
|
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# or want their text in a different position.
|
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#
|
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def recalc(self):
|
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self.recalcbounds()
|
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self.recalctextpos()
|
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#
|
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def recalcbounds(self):
|
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self.hilitebounds = _rect.inset(self.bounds, (3, 3))
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self.crossbounds = self.bounds
|
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#
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def recalctextpos(self):
|
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(left, top), (right, bottom) = self.bounds
|
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d = self.win.begindrawing()
|
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h = (left + right - d.textwidth(self.text)) / 2
|
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v = (top + bottom - d.lineheight()) / 2
|
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self.textpos = h, v
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#
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# Resize method.
|
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# Override for widgets that take over window geomtry management.
|
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#
|
||||
def resize(self):
|
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pass
|
||||
#
|
||||
# Generic drawing mechanism.
|
||||
# There should be no reason to override redraw() or draw() methods.
|
||||
# Do not override redraw() or draw() methods; override drawit() c.s.
|
||||
#
|
||||
def redraw(self):
|
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self.draw(self.win.begindrawing(), self.bounds)
|
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if not self.limbo:
|
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self.draw(self.win.begindrawing(), self.bounds)
|
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#
|
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def draw(self, (d, area)):
|
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self.limbo = 0
|
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area = _rect.intersect(area, self.bounds)
|
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if area = _rect.empty:
|
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return
|
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|
|
@ -83,10 +118,9 @@ def draw(self, (d, area)):
|
|||
# The drawit() method is fairly generic but may be overridden.
|
||||
#
|
||||
def drawit(self, d):
|
||||
self.drawpict(d) # Box, circle etc.; also 'selected'
|
||||
self.drawpict(d)
|
||||
if self.text:
|
||||
hv = self.textpos(d)
|
||||
d.text(hv, self.text)
|
||||
d.text(self.textpos, self.text)
|
||||
if not self.enabled:
|
||||
self.flipenable(d)
|
||||
if self.hilited:
|
||||
|
|
@ -95,52 +129,15 @@ def drawit(self, d):
|
|||
# Default drawing detail functions.
|
||||
# Overriding these is normally sufficient to get different
|
||||
# appearances.
|
||||
# No picture; centered text; enable crosses out; hilite inverts.
|
||||
#
|
||||
def drawpict(self, d):
|
||||
pass
|
||||
#
|
||||
def textpos(self, d):
|
||||
# XXX shouldn't this be done once by init/settext()?
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
h = (left + right - d.textwidth(self.text)) / 2
|
||||
v = (top + bottom - d.lineheight()) / 2
|
||||
return h, v
|
||||
#
|
||||
def flipenable(self, d):
|
||||
_xorcross(d, self.bounds)
|
||||
_xorcross(d, self.crossbounds)
|
||||
#
|
||||
def fliphilite(self, d):
|
||||
d.invert(_rect.inset(self.bounds, (3, 3)))
|
||||
|
||||
|
||||
# Subroutine to cross out a rectangle.
|
||||
#
|
||||
def _xorcross(d, bounds):
|
||||
((left, top), (right, bottom)) = bounds
|
||||
left = left + 2
|
||||
right = right - 2
|
||||
top = top + 2
|
||||
bottom = bottom - 3
|
||||
d.xorline(((left, top), (right, bottom)))
|
||||
d.xorline((left, bottom), (right, top))
|
||||
|
||||
|
||||
# LabelAppearance displays a centered string.
|
||||
# selected --> underlined
|
||||
# disabled --> crossed out
|
||||
# hilited --> inverted
|
||||
#
|
||||
class LabelAppearance() = BaseAppearance():
|
||||
#
|
||||
def drawpict(self, d):
|
||||
if self.selected:
|
||||
# Underline it
|
||||
d.line((left+1, bottom-1), (right-1, bottom-1))
|
||||
#
|
||||
if not self.enabled: self._crossout(d)
|
||||
if self.hilited: self._invert(d)
|
||||
#
|
||||
d.invert(self.hilitebounds)
|
||||
|
||||
|
||||
# ButtonAppearance displays a centered string in a box.
|
||||
|
|
@ -148,7 +145,7 @@ def drawpict(self, d):
|
|||
# disabled --> crossed out
|
||||
# hilited --> inverted
|
||||
#
|
||||
class ButtonAppearance() = BaseAppearance():
|
||||
class ButtonAppearance() = LabelAppearance():
|
||||
#
|
||||
def drawpict(self, d):
|
||||
d.box(_rect.inset(self.bounds, (1, 1)))
|
||||
|
|
@ -165,27 +162,25 @@ def drawpict(self, d):
|
|||
# disabled --> whole button crossed out
|
||||
# hilited --> box is inverted
|
||||
#
|
||||
class CheckAppearance() = BaseAppearance():
|
||||
class CheckAppearance() = LabelAppearance():
|
||||
#
|
||||
def drawpict(self, d):
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
boxbounds = (left, top), (left+size, bottom)
|
||||
d.box(boxbounds)
|
||||
if self.selected: _xorcross(d, boxbounds)
|
||||
d.box(self.boxbounds)
|
||||
if self.selected: _xorcross(d, self.boxbounds)
|
||||
#
|
||||
def textpos(self, d):
|
||||
def recalcbounds(self):
|
||||
LabelAppearance.recalcbounds(self)
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
h = left + size + d.textwidth(' ')
|
||||
v = top + (size - d.lineheight()) / 2
|
||||
return h, v
|
||||
self.size = bottom - top - 4
|
||||
self.boxbounds = (left+2, top+2), (left+2+self.size, bottom-2)
|
||||
self.hilitebounds = self.boxbounds
|
||||
#
|
||||
def fliphilite(self, d):
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
boxbounds = (left, top), (left+size, bottom)
|
||||
d.invert(boxbounds)
|
||||
def recalctextpos(self):
|
||||
d = self.win.begindrawing()
|
||||
(left, top), (right, bottom) = self.boxbounds
|
||||
h = right + d.textwidth(' ')
|
||||
v = top + (self.size - d.lineheight()) / 2
|
||||
self.textpos = h, v
|
||||
#
|
||||
|
||||
|
||||
|
|
@ -194,37 +189,24 @@ def fliphilite(self, d):
|
|||
# disabled --> whole button crossed out
|
||||
# hilited --> indicator is inverted
|
||||
#
|
||||
class RadioAppearance() = BaseAppearance():
|
||||
class RadioAppearance() = CheckAppearance():
|
||||
#
|
||||
def drawpict(self, d):
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
radius = size / 2
|
||||
(left, top), (right, bottom) = self.boxbounds
|
||||
radius = self.size / 2
|
||||
h, v = left + radius, top + radius
|
||||
d.circle((h, v), radius - 1)
|
||||
d.circle((h, v), radius)
|
||||
if self.selected:
|
||||
some = radius/3
|
||||
d.paint((h-some, v-some), (h+some, v+some))
|
||||
#
|
||||
def textpos(self, d):
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
h = left + size + d.textwidth(' ')
|
||||
v = top + (size - d.lineheight()) / 2
|
||||
return h, v
|
||||
#
|
||||
def fliphilite(self, d):
|
||||
(left, top), (right, bottom) = self.bounds
|
||||
size = bottom - top
|
||||
d.invert((left, top), (left + size, bottom))
|
||||
#
|
||||
|
||||
|
||||
# NoReactivity ignores mouse and timer events.
|
||||
# The trigger methods call the corresponding hooks set by the user.
|
||||
# Hooks (and triggers) mean the following:
|
||||
# down_hook called on some mouse-down events
|
||||
# active_hook called on some mouse-move events
|
||||
# move_hook called on some mouse-move events
|
||||
# up_hook called on mouse-up events
|
||||
# on_hook called for buttons with on/off state, when it goes on
|
||||
# timer_hook called on timer events
|
||||
|
|
@ -235,7 +217,7 @@ def fliphilite(self, d):
|
|||
class NoReactivity():
|
||||
#
|
||||
def init_reactivity(self):
|
||||
self.down_hook = self.active_hook = self.up_hook = \
|
||||
self.down_hook = self.move_hook = self.up_hook = \
|
||||
self.on_hook = self.off_hook = self.timer_hook = \
|
||||
self.hook = self.active = 0
|
||||
#
|
||||
|
|
@ -257,8 +239,8 @@ def timer(self):
|
|||
def down_trigger(self):
|
||||
if self.down_hook: self.down_hook(self)
|
||||
#
|
||||
def active_trigger(self):
|
||||
if self.active_hook: self.active_hook(self)
|
||||
def move_trigger(self):
|
||||
if self.move_hook: self.move_hook(self)
|
||||
#
|
||||
def up_trigger(self):
|
||||
if self.up_hook: self.up_hook(self)
|
||||
|
|
@ -290,7 +272,7 @@ def mouse_down(self, detail):
|
|||
#
|
||||
def mouse_move(self, detail):
|
||||
if self.active:
|
||||
self.active_trigger()
|
||||
self.move_trigger()
|
||||
#
|
||||
def mouse_up(self, detail):
|
||||
if self.active:
|
||||
|
|
@ -325,7 +307,7 @@ def mouse_move(self, detail):
|
|||
if self.active:
|
||||
self.hilite(self.mousetest(detail[_HV]))
|
||||
if self.hilited:
|
||||
self.active_trigger()
|
||||
self.move_trigger()
|
||||
#
|
||||
def mouse_up(self, detail):
|
||||
if self.active:
|
||||
|
|
@ -338,7 +320,7 @@ def mouse_up(self, detail):
|
|||
#
|
||||
def timer(self):
|
||||
if self.active and self.hilited:
|
||||
self.active_trigger()
|
||||
self.timer_trigger()
|
||||
#
|
||||
|
||||
|
||||
|
|
@ -382,14 +364,27 @@ class Define():
|
|||
#
|
||||
def define(self, (win, bounds, text)):
|
||||
self.init_appearance(win, bounds)
|
||||
self.text = text
|
||||
self.init_reactivity()
|
||||
self.settext(text)
|
||||
return self
|
||||
|
||||
|
||||
# Subroutine to cross out a rectangle.
|
||||
#
|
||||
def _xorcross(d, bounds):
|
||||
((left, top), (right, bottom)) = bounds
|
||||
# This is s bit funny to make it look better
|
||||
left = left + 2
|
||||
right = right - 2
|
||||
top = top + 2
|
||||
bottom = bottom - 3
|
||||
d.xorline(((left, top), (right, bottom)))
|
||||
d.xorline((left, bottom), (right, top))
|
||||
|
||||
|
||||
# Ready-made button classes
|
||||
#
|
||||
class BaseButton() = NoReactivity(), BaseAppearance(), Define(): pass
|
||||
class BaseButton() = NoReactivity(), LabelAppearance(), Define(): pass
|
||||
class Label() = NoReactivity(), LabelAppearance(), Define(): pass
|
||||
class ClassicButton() = TriggerReactivity(), ButtonAppearance(), Define(): pass
|
||||
class CheckButton() = CheckReactivity(), CheckAppearance(), Define(): pass
|
||||
|
|
|
|||
Loading…
Reference in a new issue