Browse code
testing hooks
fiddlerwoaroof authored on 24/10/2014 19:33:47Showing 1 changed files
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+; Copyright (c) 2014 Edward Langley |
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+; All rights reserved. |
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+ |
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+; Redistribution and use in source and binary forms, with or without |
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+; modification, are permitted provided that the following conditions |
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+; are met: |
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+ |
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+; Redistributions of source code must retain the above copyright notice, |
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+; this list of conditions and the following disclaimer. |
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+ |
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+; Redistributions in binary form must reproduce the above copyright |
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+; notice, this list of conditions and the following disclaimer in the |
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+; documentation and/or other materials provided with the distribution. |
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+ |
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+; Neither the name of the project's author nor the names of its |
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+; contributors may be used to endorse or promote products derived from |
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+; this software without specific prior written permission. |
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+ |
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+; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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+; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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+; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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+; FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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+; HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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+; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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+; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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+; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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+; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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+; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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+; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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+ |
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+(asdf:load-system :cl-cffi-gtk) |
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+ |
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+(defpackage :gtk-tutorial |
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+ (:use :gtk :gdk :gdk-pixbuf :gobject |
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+ :glib :gio :pango :cairo :common-lisp)) |
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+ |
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+(in-package :gtk-tutorial) |
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+ |
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+;(macroexpand-1 '(on (clicked button) (__) |
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+; (declare (ignore __)) |
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+; (format t "Button 1 was pressed"))) |
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+ |
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+(defmacro on ((sig target) bind &body body) |
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+ "Bind a signal handler: note that this intentionally shadows whatever the 'bind' argument is" |
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+ `(g-signal-connect ,target ,(string-downcase (symbol-name sig)) |
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+ (lambda ,bind |
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+ ,@body))) |
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+ |
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+(let ((surface nil)) |
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+ (defun example-drawing () |
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+ (within-main-loop |
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+ (let ((window (make-instance 'gtk-window |
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+ :type :toplevel |
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+ :title "Example Drawing")) |
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+ (frame (make-instance 'gtk-frame |
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+ :shadow-type :in)) |
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+ (area (make-instance 'gtk-drawing-area |
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+ :width-request 250 |
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+ :height-request 200))) |
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+ (g-signal-connect window "destroy" |
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+ (lambda (widget) |
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+ (declare (ignore widget)) |
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+ (leave-gtk-main))) |
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+ ;; Signals used to handle the backing surface |
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+ (g-signal-connect area "draw" |
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+ (lambda (widget cr) |
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+ (declare (ignore widget)) |
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+ (let ((cr (pointer cr))) |
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+ (cairo-set-source-surface cr surface 0.0 0.0) |
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+ (cairo-paint cr) |
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+ (cairo-destroy cr) |
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+ +gdk-event-propagate+))) |
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+ (g-signal-connect area "configure-event" |
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+ (lambda (widget event) |
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+ (declare (ignore event)) |
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+ (when surface |
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+ (cairo-surface-destroy surface)) |
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+ (setf surface |
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+ (gdk-window-create-similar-surface |
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+ (gtk-widget-window widget) |
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+ :color |
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+ (gtk-widget-get-allocated-width widget) |
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+ (gtk-widget-get-allocated-height widget))) |
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+ ;; Clear surface |
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+ (let ((cr (cairo-create surface))) |
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+ (cairo-set-source-rgb cr 1.0 1.0 1.0) |
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+ (cairo-paint cr) |
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+ (cairo-destroy cr)) |
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+ (format t "leave event 'configure-event'~%") |
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+ +gdk-event-stop+)) |
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+ ;; Event signals |
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+ (g-signal-connect area "motion-notify-event" |
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+ (lambda (widget event) |
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+ (format t "MOTION-NOTIFY-EVENT ~A~%" event) |
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+ (when (member :button1-mask (gdk-event-motion-state event)) |
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+ (let ((cr (cairo-create surface)) |
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+ (x (gdk-event-motion-x event)) |
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+ (y (gdk-event-motion-y event))) |
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+ (cairo-rectangle cr (- x 3.0) (- y 3.0) 6.0 6.0) |
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+ (cairo-fill cr) |
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+ (cairo-destroy cr) |
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+ (gtk-widget-queue-draw-area widget |
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+ (truncate (- x 3.0)) |
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+ (truncate (- y 3.0)) |
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+ 6 |
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+ 6))) |
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+ ;; We have handled the event, stop processing |
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+ +gdk-event-stop+)) |
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+ (g-signal-connect area "button-press-event" |
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+ (lambda (widget event) |
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+ (format t "BUTTON-PRESS-EVENT ~A~%" event) |
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+ (if (eql 1 (gdk-event-button-button event)) |
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+ (let ((cr (cairo-create surface)) |
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+ (x (gdk-event-button-x event)) |
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+ (y (gdk-event-button-y event))) |
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+ (cairo-rectangle cr (- x 3.0) (- y 3.0) 6.0 6.0) |
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+ (cairo-fill cr) |
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+ (cairo-destroy cr) |
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+ (gtk-widget-queue-draw-area widget |
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+ (truncate (- x 3.0)) |
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+ (truncate (- y 3.0)) |
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+ 6 |
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+ 6)) |
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+ ;; Clear surface |
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+ (let ((cr (cairo-create surface))) |
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+ (cairo-set-source-rgb cr 1.0 1.0 1.0) |
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+ (cairo-paint cr) |
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+ (cairo-destroy cr) |
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+ (gtk-widget-queue-draw widget))))) |
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+ (gtk-widget-add-events area |
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+ '(:button-press-mask |
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+ :pointer-motion-mask)) |
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+ (gtk-container-add frame area) |
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+ (gtk-container-add window frame) |
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+ (gtk-widget-show-all window))))) |
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+ |
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+(example-drawing) |