<div dir="ltr"><div><br></div>Thank you Ron, thank you very much for your help.<br></div><div class="gmail_extra"><br><div class="gmail_quote">2016-08-22 20:54 GMT+02:00 Ron Teitelbaum <span dir="ltr"><<a href="mailto:ron@usmedrec.com" target="_blank">ron@usmedrec.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> roger mpouma<br><b>Sent:</b> Monday, August 22, 2016 2:42 PM<br><br><u></u><u></u></span></p><span class=""><p class="MsoNormal"><u></u> <u></u></p><div><div><div><p class="MsoNormal">Hi Ron,<br><br>I solved my problem, thank you for your help.<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">I got one more question, how can i add the possibility to erase parts of what i have already drawn as item "clear" but just parts of the drawing ? <u></u><u></u></p></div></div></span><div><p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">[Ron Teitelbaum] Of course everything is possible. Your clear is doing just that, it’s filling in the canvas area with your background color. There are number of ways to accomplish this. A number of programs hold onto the results of each drawing collection (clicking and moving until you let go of the mouse) as a single element of the drawing. Then you can ctrl –z to remove them in order. To do something like that you need an instance of a class, something like Drawing, which holds a collection of brush strokes, colors and line widths, and a collection on your canvas to apply the drawings in order to your canvas. An instance variable called drawings would work. You could also calculate the intersection of a line and the position of the mouse pointer in the drawing to find each draw element and remove them when clicked. You could also erase by simply overlaying the background color as another draw element, in other words, drawing a line with the background color on top of everything else is similar to erasing. <u></u><u></u></span></i></b></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></i></b></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Everything is possible!<u></u><u></u></span></i></b></p><div><div class="h5"><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></i></b></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">All the best,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ron Teitelbaum<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><div><p class="MsoNormal">2016-08-22 18:45 GMT+02:00 Ron Teitelbaum <<a href="mailto:ron@usmedrec.com" target="_blank">ron@usmedrec.com</a>>:<u></u><u></u></p><div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Roger! </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">That was a nice try!</span><u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><div><div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">I modified methods:<br><br>addCustomMenuItems: aCustomMenu hand: aHandMorph<br> super addCustomMenuItems: aCustomMenu hand: aHandMorph.<br> aCustomMenu add: 'clear' action: #clear.<br> drawColor := Color red. //modification<br> drawColor := Color yellow. //modification<br> drawColor := Color green. //modification<br> drawColor := Color blue. //modification<u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">[Ron Teitelbaum]</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">What this does is create a menu with one item clear and then it sets the drawColor to red yellow green and then blue. Since blue is the last color you end up with blue.</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Try creating drawRed, drawYellow, drawGreen, and drawBlue methods</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">For example</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">drawRed</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> drawColor := Color red.</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Now add to your menu properly.</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt">aCustomMenu add: 'clear' action: #clear.<br>aCustomMenu add: 'red' action: #drawRed.<u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Where add is what you see in your menu and action is what happens when you select the menu item. (it calls: self drawRed)</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Do that with all your colors and you should be all set!</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">You can also add menu items to adjust the size of the brush. Maybe make small brush, medium brush and large brush menu items? Works the same way as changing color. You need a brushSize instance variable. And initialize brushSize := 2.</span></i></b><u></u><u></u></p><div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">All the best,</span></i></b><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ron Teitelbaum<br></span></i></b><br>initialize<br> super initialize.<br> self extent: 500@700.<br> drawColor := Color black.<br><br>mouseDown: evt<br> brush := Pen newOnForm: form.<br> brush roundNib: 2.<br> brush color: drawColor. //modification<br> lastMouse := evt cursorPoint - bounds origin.<br> brush drawFrom: lastMouse to: lastMouse.<br> self invalidRect:<br> ((lastMouse - brush sourceForm extent corner:<br> lastMouse + brush sourceForm extent)<br> translateBy: bounds origin).<u></u><u></u></p></div></div></div><div><div><div><p class="MsoNormal">The initial color is black.<u></u><u></u></p></div><p class="MsoNormal">When i click the command "change color" on the menu and i chose for example the green color, the result is the blue color. I don't understand why ?<u></u><u></u></p></div></div></div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">And after the first choice, i must restart the program with the Workspace for change another color. So i can't make several choices at the same time.<br><br>How can I solve these problems ? and to change size of the brush ? <u></u><u></u></p></div></div></div><p class="MsoNormal">Thank you in advance.<u></u><u></u></p></div><div><div><div><p class="MsoNormal"> <u></u><u></u></p><div><p class="MsoNormal">2016-08-21 3:14 GMT+02:00 Ron Teitelbaum <<a href="mailto:ron@usmedrec.com" target="_blank">ron@usmedrec.com</a>>:<u></u><u></u></p><div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> roger mpouma<br><b>Sent:</b> Saturday, August 20, 2016 2:42 PM</span><u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><div><div><p class="MsoNormal">How can i make this please ?<u></u><u></u></p></div><p class="MsoNormal">I thought to add "color" and "size" commands as "clear" command in the custom menu code. After that, add "color" and "size" methods...<u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">[Ron Teitelbaum] </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">What I was thinking is making buttons on the panel. Color buttons with a highlight around it so you can see what is selected. You could instead add something like Red or Blue to the menu.</span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">On your class add some instance variable called drawColor or something like that.</span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">When the menu item Red is called you would do </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">drawColor := Color red.</span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Then in mouseDown:</span></i></b><u></u><u></u></p><p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></i></b><u></u><u></u></p><p class="MsoNormal"> brush color: drawColor.<u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Initialize your color to something like black</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Initialize</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> drawColor := Color black.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">So that the user is not required to use the menu to get the default color (black).</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hope that helps,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><br>Ron</span><u></u><u></u></p></div><div><div><div><p class="MsoNormal"> <u></u><u></u></p><div><p class="MsoNormal">2016-08-20 20:26 GMT+02:00 Ron Teitelbaum <<a href="mailto:ron@usmedrec.com" target="_blank">ron@usmedrec.com</a>>:<u></u><u></u></p><div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Have you considered having a menu bar with colors and line sizes. The users can select the color and line size which will change your program to use those settings.</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">All the best,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ron Teitelbaum</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a href="mailto:beginners-bounces@lists.squeakfoundation.org" target="_blank">beginners-bounces@lists.<wbr>squeakfoundation.org</a> [mailto:<a href="mailto:beginners-bounces@lists.squeakfoundation.org" target="_blank">beginners-bounces@<wbr>lists.squeakfoundation.org</a>] <b>On Behalf Of </b>roger mpouma<br><b>Sent:</b> Saturday, August 20, 2016 1:51 PM<br><b>To:</b> A friendly place to get answers to even the most basic questions about Squeak.<br><b>Subject:</b> Re: [Newbies] Project on squeak language</span><u></u><u></u></p><div><div><p class="MsoNormal"> <u></u><u></u></p><div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">I have already implemented the canvas on which we draw, the possibility of drawing with the brush but with only a single color and a single size, a capacity to erase what we have already drawn with the "Clear" command on the custom menu code. <br>So, i'd like to add the possibility of changing the color and the size of the brush presenting the choices of color and brush size.<u></u><u></u></p></div><p class="MsoNormal" style="margin-bottom:12.0pt">The differents methods are:<u></u><u></u></p></div><div><p class="MsoNormal">"Methods"<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">extent: aPoint<br> | newForm |<br> super extent: aPoint.<br> newForm := Form extent: self extent depth: 16.<br> newForm fillColor: Color veryLightGray.<br> form ifNotNil: [form displayOn: newForm].<br> form := newForm.<br> <br> <br>initialize<br> super initialize.<br> self extent: 500@350.<br> <br>drawOn: aCanvas<br> aCanvas image: form at: bounds origin.<br> <br>handlesMouseDown: evt<br> ^ true <br> <br>mouseDown: evt<br> brush := Pen newOnForm: form.<br> brush roundNib: 3.<br> brush color: Color red.<br> lastMouse := evt cursorPoint - bounds origin.<br> brush drawFrom: lastMouse to: lastMouse.<br> self invalidRect:<br> ((lastMouse - brush sourceForm extent corner:<br> lastMouse + brush sourceForm extent)<br> translateBy: bounds origin).<br> <br> <br>mouseMove: evt<br> | p |<br> p := evt cursorPoint - bounds origin.<br> p = lastMouse ifTrue: [^ self].<br> brush drawFrom: lastMouse to: p.<br> self invalidRect: ((<br> ((lastMouse min: p) - brush sourceForm extent) corner:<br> ((lastMouse max: p) + brush sourceForm extent))<br> translateBy: bounds origin).<br> lastMouse := p.<br> <br> <br>addCustomMenuItems: aCustomMenu hand: aHandMorph<br> super addCustomMenuItems: aCustomMenu hand: aHandMorph.<br> aCustomMenu add: 'clear' action: #clear.<br> <br> <br>clear<br> form fillColor: Color veryLightGray.<br> self changed.<u></u><u></u></p></div><p class="MsoNormal">"Class PaintMorph"<u></u><u></u></p><div><p class="MsoNormal" style="margin-bottom:12.0pt">Morph subclass: #PaintMorph<br> instanceVariableNames: 'form brush lastMouse'<br> classVariableNames: ''<br> poolDictionaries: ''<br> category: 'Morphic-Fun'<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">"Workspace"<br>PaintMorph new openInWorld.<u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Thank you in advance.<u></u><u></u></p></div></div></div><div><p class="MsoNormal"> <u></u><u></u></p><div><p class="MsoNormal">2016-08-20 18:47 GMT+02:00 Bert Freudenberg <<a href="mailto:bert@freudenbergs.de" target="_blank">bert@freudenbergs.de</a>>:<u></u><u></u></p><div><p class="MsoNormal">Sure. Just ask some specific questions - e.g. what you tried, what worked, what didn't etc.<u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">- Bert -<u></u><u></u></p><div><p class="MsoNormal"> <u></u><u></u></p><div><div><div><p class="MsoNormal">On Sat, Aug 20, 2016 at 10:59 AM, roger mpouma <<a href="mailto:rmpouma@gmail.com" target="_blank">rmpouma@gmail.com</a>> wrote:<u></u><u></u></p></div></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"><div><div><p class="MsoNormal">Hello, <br>I need help for a drawing project on Squeak. I'd like implement a canvas on which we draw with the possibility of drawing with brush changing the color and size of the brush. Is it possibile to have help ?<br><br>Thank you in advance. <u></u><u></u></p></div></div><p class="MsoNormal" style="margin-bottom:12.0pt">______________________________<wbr>_________________<br>Beginners mailing list<br><a href="mailto:Beginners@lists.squeakfoundation.org" target="_blank">Beginners@lists.<wbr>squeakfoundation.org</a><br><a href="http://lists.squeakfoundation.org/mailman/listinfo/beginners" target="_blank">http://lists.squeakfoundation.<wbr>org/mailman/listinfo/beginners</a><u></u><u></u></p></blockquote></div><p class="MsoNormal"> <u></u><u></u></p></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>Beginners mailing list<br><a href="mailto:Beginners@lists.squeakfoundation.org" target="_blank">Beginners@lists.<wbr>squeakfoundation.org</a><br><a href="http://lists.squeakfoundation.org/mailman/listinfo/beginners" target="_blank">http://lists.squeakfoundation.<wbr>org/mailman/listinfo/beginners</a><u></u><u></u></p></div><p class="MsoNormal"> <u></u><u></u></p></div></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>Beginners mailing list<br><a href="mailto:Beginners@lists.squeakfoundation.org" target="_blank">Beginners@lists.<wbr>squeakfoundation.org</a><br><a href="http://lists.squeakfoundation.org/mailman/listinfo/beginners" target="_blank">http://lists.squeakfoundation.<wbr>org/mailman/listinfo/beginners</a><u></u><u></u></p></div><p class="MsoNormal"> <u></u><u></u></p></div></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>Beginners mailing list<br><a href="mailto:Beginners@lists.squeakfoundation.org" target="_blank">Beginners@lists.<wbr>squeakfoundation.org</a><br><a href="http://lists.squeakfoundation.org/mailman/listinfo/beginners" target="_blank">http://lists.squeakfoundation.<wbr>org/mailman/listinfo/beginners</a><u></u><u></u></p></div><p class="MsoNormal"> <u></u><u></u></p></div></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>______________________________<wbr>_________________<br>Beginners mailing list<br><a href="mailto:Beginners@lists.squeakfoundation.org" target="_blank">Beginners@lists.<wbr>squeakfoundation.org</a><br><a href="http://lists.squeakfoundation.org/mailman/listinfo/beginners" target="_blank">http://lists.squeakfoundation.<wbr>org/mailman/listinfo/beginners</a><u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p></div></div></div></div></div><br>______________________________<wbr>_________________<br>
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