EQL5/examples/2-clock.lisp
2016-11-25 23:30:38 +01:00

94 lines
2.9 KiB
Common Lisp

;;; This is (kind of) a port of the Qt Script Example "Clock"
#-qt-wrapper-functions ; see README-OPTIONAL.txt
(load (in-home "src/lisp/all-wrappers"))
(defpackage :clock
(:use :common-lisp :eql)
(:export
#:*clock*
#:start))
(in-package :clock)
(defparameter *show-seconds* t)
(defparameter *show-minutes* t)
(defvar *clock* (qnew "QWidget(QWidget*,Qt::WindowFlags)" nil |Qt.WindowStaysOnTopHint|
"size" '(170 170)
"pos" '(50 50)))
(defun start ()
(let ((timer (qnew "QTimer(QObject*)" *clock*)))
(qconnect timer "timeout()" (lambda () (|update| *clock*)))
(qoverride *clock* "paintEvent(QPaintEvent*)" 'paint)
(|start| timer 500)
(x:do-with *clock* |show| |raise|)))
(defun pen (width &optional (color "black"))
(x:let-it (qnew "QPen")
(x:do-with x:it
(|setCapStyle| |Qt.RoundCap|)
(|setWidth| width)
(|setColor| color))))
(defun brush (color)
(x:let-it (qnew "QBrush")
(x:do-with x:it
(|setStyle| |Qt.SolidPattern|)
(|setColor| color))))
(defparameter *pen-clock* (pen 8 "steelblue"))
(defparameter *pen-hour-marks* (pen 4))
(defparameter *pen-minute-marks* (pen 2 "steelblue"))
(defparameter *pen-hour* (pen 7))
(defparameter *pen-minute* (pen 5))
(defparameter *pen-second* (pen 2 "red"))
(defparameter *brush-clock* (brush "white"))
(defparameter *brush-second* (brush "gold"))
(defun paint (ev)
(macrolet ((with-save (() &body body)
`(progn (|save| p) ,@body (|restore| p))))
(qlet ((p "QPainter(QWidget*)" *clock*))
(let* ((size (|size| *clock*))
(scale (/ (apply 'min size) 170)))
(|translate| p (mapcar (lambda (x) (/ x 2)) size))
(|scale| p scale scale))
(|rotate| p -90)
(|setRenderHint| p |QPainter.Antialiasing|)
(|setPen| p *pen-clock*)
(|setBrush| p *brush-clock*)
(|drawEllipse| p '(-75 -75 150 150))
(|setPen| p *pen-hour-marks*)
(dotimes (n 12)
(|rotate| p 30)
(|drawLine| p '(55 0 65 0)))
(|setPen| p *pen-minute-marks*)
(dotimes (n 60)
(|rotate| p 6)
(|drawLine| p '(63 0 65 0)))
(multiple-value-bind (sec min hour)
(get-decoded-time)
(with-save ()
(|rotate| p (+ (* 30 hour) (/ min 2)))
(|setPen| p *pen-hour*)
(|setOpacity| p 0.5)
(|drawLine| p '(-10 0 36 0)))
(when *show-minutes*
(with-save ()
(|rotate| p (* 6 min))
(|setPen| p *pen-minute*)
(|setOpacity| p 0.5)
(|drawLine| p '(-15 0 65 0))))
(when *show-seconds*
(with-save ()
(|rotate| p (* 6 sec))
(|setPen| p *pen-second*)
(|setBrush| p *brush-second*)
(|drawEllipse| p '(-1.5 -1.5 3 3))
(|setOpacity| p 0.7)
(|drawLine| p '(-15 0 52 0))
(|drawEllipse| p '(53 -4 8 8))))))))
(start)