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Use overload by argument count for :cxx generic functions
Annotate for file src/mandelbrot/mandelbrotwidget.lisp
2010-04-03 tobias
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(in-package :kde.examples)
17:19:09 '
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(declaim (optimize (debug 3)))
2009-04-02 tobias
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22:16:06 '
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(defun zoom-in-factor ()
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0.8)
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'
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(defun zoom-out-factor ()
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(/ (zoom-in-factor)))
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'
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(defclass mandelbrotwidget (qt:widget)
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((pixmap :accessor pixmap :initform nil)
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(pixmap-scale :accessor pixmap-scale)
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(pixmap-offset :accessor pixmap-offset)
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(center :accessor center :initform #C(-0.5d0 0d0))
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(scale :accessor scale :initform 0.007d0)
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(update-pixmap-slot :accessor update-pixmap-slot)
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(render :accessor render-thread)
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(last-drag-pos :accessor last-drag-pos :initform nil))
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(:metaclass cxx:class))
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'
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(defun update-pixmap (mandelbrotwidget image scale)
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(when (null (last-drag-pos mandelbrotwidget))
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(setf (pixmap mandelbrotwidget)
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(qt:pixmap.from-image image))
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(setf (pixmap-offset mandelbrotwidget) #c(0 0))
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(setf (pixmap-scale mandelbrotwidget) scale)
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(cxx:update mandelbrotwidget)))
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'
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(defparameter *render-control* (make-instance 'render-control))
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(defun setup-slot (mandelbrotwidget)
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(setf (update-pixmap-slot mandelbrotwidget)
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(qt:make-slot #'(lambda (image scale)
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(update-pixmap mandelbrotwidget image scale))
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(mapcar #'find-class
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'(qt:image double-float))))
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(qt:connect (done-signal *render-control*)
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(update-pixmap-slot mandelbrotwidget)
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qt:+queued-connection+))
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'
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(defun draw-rendering (painter widget)
2009-04-17 tobias
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(cxx:set-pen painter (make-instance 'qt:color
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:args (list qt:+white+)))
2009-04-02 tobias
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(cxx:draw-text painter (cxx:rect widget)
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(value qt:+align-center+)
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"Rendering initial image, please wait..."))
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'
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(defun complex-floor (complex)
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"Applys FLOOR to the real and imaginary part of COMPLEX."
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(complex (floor (realpart complex)
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(imagpart complex))))
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'
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(defun draw-scaled-pixmap (painter widget)
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(cxx:save painter) ;; FIXME make with- macro
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(let* ((scale-factor (/ (pixmap-scale widget)
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(scale widget)))
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(pixmap-size (complex (cxx:width (pixmap widget))
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(cxx:height (pixmap widget))))
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(new-size (* scale-factor pixmap-size))
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(new-center (+ (pixmap-offset widget) (/ (- pixmap-size new-size) 2))))
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(cxx:translate painter (realpart new-center) (imagpart new-center))
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(cxx:scale painter scale-factor scale-factor)
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(let ((exposed (cxx:adjusted (cxx:map-rect (cxx:inverted (cxx:matrix painter))
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(cxx:rect widget))
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-1 -1 1 1)))
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(cxx:draw-pixmap painter exposed (pixmap widget) exposed)))
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(cxx:restore painter))
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'
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'
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(defun draw-pixmap (painter widget)
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(if (= (scale widget) (pixmap-scale widget))
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(cxx:draw-pixmap painter
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(floor (realpart (pixmap-offset widget)))
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(floor (imagpart (pixmap-offset widget)))
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(pixmap widget))
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(draw-scaled-pixmap painter widget)))
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2009-04-12 tobias
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(defmethod cxx:paint-event ((widget mandelbrotwidget) event)
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(declare (ignore event))
2009-04-02 tobias
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(qt:with-painter (painter widget)
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(cxx:fill-rect painter (cxx:rect widget)
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(make-instance 'qt:brush :args (list
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(make-instance 'qt:color :args (list qt:+black+)))))
2009-04-02 tobias
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(if (null (pixmap widget))
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(draw-rendering painter widget)
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(draw-pixmap painter widget))))
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2009-04-12 tobias
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(defmethod cxx:resize-event ((widget mandelbrotwidget) event)
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(declare (ignore event))
2009-04-02 tobias
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(when (slot-boundp widget 'render)
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(setf (stop-p *render-control*) t)
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(join-thread (slot-value widget 'render)))
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(queue-image widget))
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2009-04-12 tobias
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(defmethod cxx:key-press-event ((widget mandelbrotwidget) event)
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(enum-cases (cxx:key event)
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(qt:+key-up+
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(scroll widget #C(0d0 -5d0)))
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(qt:+key-down+
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(scroll widget #C(0d0 5d0)))
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(qt:+key-left+
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(scroll widget #C(-5d0 0d0)))
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(qt:+key-right+
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(scroll widget #C(5d0 0d0)))
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(qt:+key-plus+
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(zoom widget (zoom-in-factor)))
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(qt:+key-minus+
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(zoom widget (zoom-out-factor)))))
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2009-04-12 tobias
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(defmethod cxx:mouse-press-event ((widget mandelbrotwidget) event)
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(when (enum= (cxx:button event) qt:+left-button+)
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(setf (last-drag-pos widget) (complex (cxx:x event)
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(cxx:y event)))))
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(defmethod cxx:wheel-event ((widget mandelbrotwidget) event)
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(zoom widget (expt (zoom-in-factor) (/ (cxx:delta event) (* 8 15.0)))))
22:16:06 '
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2009-04-12 tobias
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(defmethod cxx:mouse-move-event ((widget mandelbrotwidget) event)
2010-04-03 tobias
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(when (logand (cxx:buttons event) (value qt:+left-button+))
2009-04-02 tobias
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(incf (pixmap-offset widget)
22:16:06 '
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(- (complex (cxx:x event)
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(cxx:y event))
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(last-drag-pos widget)))
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(setf (last-drag-pos widget) (complex (cxx:x event)
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(cxx:y event)))
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(cxx:update widget)))
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2009-04-12 tobias
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(defmethod cxx:mouse-release-event ((widget mandelbrotwidget) event)
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(when (enum= (cxx:button event) qt:+left-button+)
22:16:06 '
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(incf (pixmap-offset widget)
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(- (complex (cxx:x event)
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(cxx:y event))
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(last-drag-pos widget)))
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(setf (last-drag-pos widget) nil)
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(let ((pixmap-size (complex (cxx:width (pixmap widget))
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(cxx:height (pixmap widget))))
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(size (complex (cxx:width widget)
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(cxx:height widget))))
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(scroll widget (- (/ (- size pixmap-size) 2) (pixmap-offset widget))))))
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'
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(defun queue-image (widget)
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(setf (stop-p *render-control*) nil)
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;; FIXME do not creating a new thread on every invokation
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(setf (render-thread widget)
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(make-thread (make-render-function (center widget)
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(scale widget)
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(cxx:width widget)
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(cxx:height widget)
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*render-control*))))
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'
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(defun zoom (widget factor)
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(setf (scale widget) (* (scale widget) factor))
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(cxx:update widget)
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(queue-image widget))
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'
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(defun scroll (widget delta)
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(incf (center widget) (* (scale widget) delta))
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(cxx:update widget)
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(queue-image widget))