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Fix analog-clock timer interval
Annotate for file src/qt/analog-clock.lisp
2010-01-23 tobias
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;;; Copyright (c) 2010 Tobias Rautenkranz <tobias@rautenkranz.ch>
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;;; Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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;;; Contact: Qt Software Information (qt-info@nokia.com)
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;;;
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;;; This file is part of the examples of the Qt Toolkit.
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;;;
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;;; $QT_BEGIN_LICENSE:LGPL$
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;;; Commercial Usage
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;;; Licensees holding valid Qt Commercial licenses may use this file in
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;;; accordance with the Qt Commercial License Agreement provided with the
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;;; Software or, alternatively, in accordance with the terms contained in
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;;; a written agreement between you and Nokia.
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;;;
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;;; GNU Lesser General Public License Usage
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;;; Alternatively, this file may be used under the terms of the GNU Lesser
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;;; General Public License version 2.1 as published by the Free Software
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;;; Foundation and appearing in the file LICENSE.LGPL included in the
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;;; packaging of this file. Please review the following information to
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;;; ensure the GNU Lesser General Public License version 2.1 requirements
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;;; will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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;;;
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;;; In addition, as a special exception, Nokia gives you certain
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;;; additional rights. These rights are described in the Nokia Qt LGPL
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;;; Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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;;; package.
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;;;
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;;; GNU General Public License Usage
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;;; Alternatively, this file may be used under the terms of the GNU
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;;; General Public License version 3.0 as published by the Free Software
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;;; Foundation and appearing in the file LICENSE.GPL included in the
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;;; packaging of this file. Please review the following information to
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;;; ensure the GNU General Public License version 3.0 requirements will be
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;;; met: http://www.gnu.org/copyleft/gpl.html.
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;;;
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;;; If you are unsure which license is appropriate for your use, please
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;;; contact the sales department at qt-sales@nokia.com.
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;;; $QT_END_LICENSE$
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(in-package :qt.examples)
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(defclass analog-clock (qt:widget)
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()
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(:metaclass cxx:class))
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(defmethod initialize-instance :after ((clock analog-clock) &rest initargs)
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(declare (ignore initargs))
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(let ((timer (make-instance 'qt:timer :arg0 clock)))
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(qt:connect (qt:get-signal timer "timeout()")
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(qt:get-slot clock "update()"))
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(cxx:start timer 1000))
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(setf (cxx:window-title clock) "Analog Clock")
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(cxx:resize clock 200 200))
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(defun make-polygon (points)
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(make-instance 'qt:polygon :arg0
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(map 'vector #'(lambda (coords)
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(make-instance 'qt:point
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:arg0 (first coords)
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:arg1 (rest coords)))
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points)))
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(let ((hour-hand (make-polygon '((7 . 8) (-7 . 8) (0 . -40))))
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(minute-hand (make-polygon '((7 . 8) (-7 . 8) (0 . -70)))))
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(defmethod cxx:paint-event ((clock analog-clock) paint-event)
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(let ((hour-color (make-instance 'qt:color :args '(127 0 127)))
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(minute-color (make-instance 'qt:color :args '(0 127 127 191)))
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(side (min (cxx:width clock) (cxx:height clock)))
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(time (qt:time.current-time)))
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(qt:with-painter (painter clock)
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(cxx:set-render-hint painter qt:painter.+antialiasing+)
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(cxx:translate painter
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(/ (cxx:width clock) 2) (/ (cxx:height clock) 2))
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(cxx:scale painter (/ side 200.0) (/ side 200.0))
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(cxx:set-pen painter qt:+no-pen+)
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(cxx:set-brush painter hour-color)
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(qt:with-painter (painter)
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(cxx:rotate painter (* 30.0 (+ (cxx:hour time)
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(/ (cxx:minute time) 60.0))))
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(cxx:draw-convex-polygon painter hour-hand))
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(cxx:set-pen painter hour-color)
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(dotimes (i 12)
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(cxx:draw-line painter 88 0 96 0)
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(cxx:rotate painter 30.0))
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(cxx:set-pen painter qt:+no-pen+)
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(cxx:set-brush painter minute-color)
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(qt:with-painter (painter)
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(cxx:rotate painter (* 6.0 (+ (cxx:minute time)
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(/ (cxx:second time) 60.0))))
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(cxx:draw-convex-polygon painter minute-hand))
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(cxx:set-pen painter minute-color)
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(dotimes (i 60)
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(unless (zerop (mod i 5))
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(cxx:draw-line painter 92 0 96 0))
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(cxx:rotate painter 6.0))))))
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(defun analog-clock ()
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"Analog Clock"
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(qt:with-app ()
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(let ((clock (make-instance 'analog-clock)))
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(cxx:show clock)
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(qt:exec))))