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#!/usr/bin/env ruby -w
require 'Qt'
# an analog clock widget using an internal QTimer
class AnalogClock < Qt::Widget
slots 'setTime(const QTime&)', 'drawClock(QPainter*)', 'timeout()'
def initialize(*k)
super(*k)
@time = Qt::Time::currentTime
@internalTimer = Qt::Timer.new(self)
connect(@internalTimer, SIGNAL('timeout()'), self, SLOT('timeout()'))
@internalTimer.start(5000)
end
def mousePressEvent(e)
if isTopLevel
topLeft = geometry.topLeft - frameGeometry.topLeft
@clickPos = e.pos + topLeft
end
end
def mouseMoveEvent(e)
if isTopLevel
move(e.globalPos - @clickPos) unless @clickPos.nil?
end
end
def setTime(t)
# erm. huh?
timeout()
end
# The QTimer::timeout() signal is received by this slot.
def timeout
new_time = Qt::Time::currentTime
@time = @time.addSecs 5
unless new_time.minute == @time.minute
if autoMask
updateMask
else
update
end
end
end
def paintEvent(blah)
unless autoMask
paint = Qt::Painter.new(self)
paint.setBrush(colorGroup.foreground)
drawClock(paint)
paint.end
end
end
# If clock is transparent, we use updateMask() instead of paintEvent()
def updateMask
bm = Qt::Bitmap.new(size)
bm.fill(color0) # transparent
paint = Qt::Painter.new
paint.begin(bm, self)
paint.setBrush(color1) # use non-transparent color
paint.setPen(color1)
drawClock(paint)
paint.end
setMask(bm)
end
# The clock is painted using a 1000x1000 square coordinate system, in
# the centered square, as big as possible. The painter's pen and
# brush colors are used.
def drawClock(paint)
paint.save
paint.setWindow(-500,-500, 1000,1000)
v = paint.viewport
d = [v.width, v.height].min
vpx = (v.left + (v.width-d)) / 2
vpy = (v.top - (v.height-d)) / 2
paint.setViewport(vpx, vpy, d, d)
paint.save
paint.rotate(30*(@time.hour%12-3) + @time.minute/2)
pts = Qt::PointArray.new(4, [-20,0, 0,-20, 300,0, 0,20])
paint.drawConvexPolygon(pts)
paint.restore
paint.save
paint.rotate((@time.minute-15)*6)
pts = Qt::PointArray.new(4, [-10,0, 0,-10, 400,0, 0,10])
paint.drawConvexPolygon(pts)
paint.restore;
12.times {
paint.drawLine(440,0, 460,0)
paint.rotate(30)
}
paint.restore
end
def setAutoMask(background)
setBackgroundMode(background ? PaletteForeground : PaletteBackground)
Qt::Widget::setAutoMask(background)
end
end
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