Better/more AJAXy problem rendering
This commit is contained in:
Piotr Mitros
@@ -30,7 +30,19 @@ class LoncapaModule(XModule):
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def max_score(self):
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return len(self.lcp.questions)
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def get_html(self, encapsulate=True):
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def get_html(self):
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return render_to_string('problem_ajax.html',
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{'id':self.filename,
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'ajax_url':self.ajax_url,
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})
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def get_init_js(self):
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return render_to_string('problem.js',
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{'id':self.filename,
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'ajax_url':self.ajax_url,
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})
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def get_problem_html(self, encapsulate=True):
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html = self.lcp.get_html()
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content={'name':self.name,
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'html':html}
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@@ -47,11 +59,9 @@ class LoncapaModule(XModule):
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})
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if encapsulate:
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html = '<div id="main_{id}">'.format(id=self.item_id)+html+"</div>"
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return html
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def get_init_js(self):
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return ""
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def __init__(self, xml, item_id, ajax_url=None, track_url=None, state=None):
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XModule.__init__(self, xml, item_id, ajax_url, track_url, state)
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dom=parseString(xml)
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@@ -63,17 +73,25 @@ class LoncapaModule(XModule):
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def handle_ajax(self, dispatch, get):
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if dispatch=='problem_check':
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html = self.check_problem(get)
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response = self.check_problem(get)
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elif dispatch=='problem_reset':
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html = self.reset_problem(get)
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response = self.reset_problem(get)
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elif dispatch=='problem_get':
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response = self.get_problem(get)
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else:
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return "Error"
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return html
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return response
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# Temporary -- move to capa_problem
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# Figure out if we should move these to capa_problem?
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def get_problem(self, get):
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''' Same as get_problem_html -- if we want to reconfirm we have the right
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thing e.g. after several AJAX calls. '''
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return self.get_problem_html(encapsulate=False)
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def check_problem(self, get):
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''' Checks whether answers to a problem are correct, and returns
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a map of correct/incorrect answers '''
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self.lcp.done=True
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answer=dict()
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# input_resistor_1 ==> resistor_1
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@@ -85,6 +103,8 @@ class LoncapaModule(XModule):
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return js
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def reset_problem(self, get):
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''' Changes problem state to unfinished -- removes student answers,
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and causes problem to rerender itself. '''
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self.lcp.done=False
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self.lcp.answers=dict()
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self.lcp.context=dict()
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@@ -92,9 +112,6 @@ class LoncapaModule(XModule):
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self.lcp.answers=dict() # Student answers
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self.lcp.correct_map=dict()
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self.lcp.seed=None
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# Minor cleanup would be nice
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# We recreate the capa_problem on a reset
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filename=settings.DATA_DIR+self.filename+".xml"
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self.lcp=LoncapaProblem(filename, self.item_id, self.lcp.get_state())
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# self.lcp.__init__(filename, self.item_id, self.lcp.get_state())
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return json.dumps(self.get_html(encapsulate=False))
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return json.dumps(self.get_problem_html(encapsulate=False))
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1580
courseware/static/schematic.js
Normal file
1580
courseware/static/schematic.js
Normal file
@@ -0,0 +1,1580 @@
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//////////////////////////////////////////////////////////////////////////////
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//
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// Simple schematic capture
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//
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////////////////////////////////////////////////////////////////////////////////
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// Chris Terman, Nov. 2011
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// add schematics to a document with
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//
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// <input type="hidden" class="schematic" name="unique_form_id" value="...schematic/netlist info..." .../>
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//
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// other attributes you can add to the input tag:
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// width -- width in pixels of diagram
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// height -- height in pixels of diagram
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// parts -- comma-separated list of parts for parts bin (see parts_map)
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// TO DO:
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// - read initial diagram from value of hidden input field
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// - write diagram state into value of hidden input field
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// - wire labels?
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// - devices: diode, nfet, pfet, opamp, scope probe
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// - icons for test equipment? (scope, sig gen, counter, ...)
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// - rotate multiple objects around their center of mass
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// - rubber band wires when moving components
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// - add help messages/tooltips
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// - tool bar (zoom in/zoom out, rotate, mode: wire/select, save/restore, simulate, help)
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// - scroll canvas
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// - freeze_diagram, freeze_properties attributes (freeze certain components/properties?)
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// - add thumb to resize work area
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// - label nodes, extract component netlist
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// - simulation: operating points, trans, ac analysis, sweeps?
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// - how to integrate plot display?
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// add ourselves to the tasks that get performed when window is loaded
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window.onload = add_schematic_handler(window.onload);
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function add_schematic_handler(other_onload) {
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return function() {
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// execute othe onload functions first
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if (other_onload) other_onload();
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// set up each schematic on the page
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var schematics = document.getElementsByClassName('schematic');
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for (var i = schematics.length - 1; i >= 0; i--)
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new Schematic(schematics[i]);
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}
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}
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background_style = 'rgb(200,255,200)';
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element_style = 'rgb(255,255,255)';
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// list of all the defined parts
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parts_map = {
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'g': Ground,
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'v': VSource,
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'i': ISource,
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'r': Resistor,
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'c': Capacitor,
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'l': Inductor,
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};
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///////////////////////////////////////////////////////////////////////////////
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//
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// Schematic = diagram + parts bin + status area
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//
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////////////////////////////////////////////////////////////////////////////////
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// setup a schematic by populating the <div> with the appropriate children
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function Schematic(input) {
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var div = document.createElement('div');
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// set up div so we can position elements inside of it
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div.style.position = 'relative';
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// grab attributes from the <div> that created us
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this.div = div;
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this.grid = 8;
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this.scale = 2;
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this.origin_x = 0;
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this.origin_y = 0;
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// start with a background element with normal positioning
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this.background = document.createElement('canvas');
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this.background.style.backgroundColor = background_style;
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this.status_div = document.createElement('div');
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this.status_div.style.borderStyle = 'solid';
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this.status_div.style.borderWidth = '1px';
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this.status_div.style.position = 'absolute';
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this.status_div.style.padding = '2px';
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this.status_div.style.backgroundColor = element_style;
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this.status = document.createTextNode('Wow, schematic entry all in javascript!');
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this.status_div.appendChild(this.status);
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this.connection_points = new Array(); // location string => list of cp's
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this.components = [];
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// this is where schematic is rendered
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this.canvas = document.createElement('canvas');
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this.canvas.tabIndex = 1; // so we get keystrokes
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this.canvas.style.borderStyle = 'solid';
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this.canvas.style.borderWidth = '1px';
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this.canvas.style.position = 'absolute';
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this.canvas.schematic = this;
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this.canvas.addEventListener('mousemove',this.mouse_move,false);
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this.canvas.addEventListener('mouseover',this.mouse_enter,false);
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this.canvas.addEventListener('mouseout',this.mouse_leave,false);
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this.canvas.addEventListener('mousedown',this.mouse_down,false);
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this.canvas.addEventListener('mouseup',this.mouse_up,false);
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this.canvas.addEventListener('dblclick',this.double_click,false);
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this.canvas.addEventListener('keydown',this.key_down,false);
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this.canvas.addEventListener('keypress',this.key_press,false);
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// make the canvas "clickable" by registering a dummy click handler
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// this should make things work on the iPad
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this.canvas.addEventListener('click',function(){},false);
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this.dragging = false;
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this.drawCursor = false;
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this.cursor_x = 0;
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this.cursor_y = 0;
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this.draw_cursor = null;
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this.select_rect = null;
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this.wire = null;
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// repaint simply draws this buffer and then adds selected elements on top
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this.bg_image = document.createElement('canvas');
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// use user-supplied list of parts if supplied
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// else just populate parts bin with all the parts
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var parts = input.getAttribute('parts');
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if (parts) parts = parts.split(',');
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else {
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parts = new Array();
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for (var p in parts_map) parts.push(p);
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}
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// now add the parts to the parts bin
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var parts_left = this.width + 3 + background_margin;
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var parts_top = background_margin;
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this.parts_bin = [];
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for (var i = 0; i < parts.length; i++) {
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var part = new Part(this);
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part.set_component(new parts_map[parts[i]](part,0,0,0));
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this.parts_bin.push(part);
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}
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// add all elements to the DOM
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div.appendChild(this.background);
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div.appendChild(this.canvas);
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div.appendChild(this.status_div);
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for (var i = 0; i < this.parts_bin.length; i++)
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div.appendChild(this.parts_bin[i].canvas);
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input.parentNode.insertBefore(div,input.nextSibling);
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// make sure other code can find us!
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input.schematic = this;
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this.input = input;
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// set locations of all the elements in the editor
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var w = parseInt(input.getAttribute('width'));
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var h = parseInt(input.getAttribute('height'));
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this.set_locations(w,h);
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}
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background_margin = 5;
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part_w = 56; // size of a parts bin compartment
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part_h = 56;
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status_height = 18;
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thumb_style = 'rgb(128,128,128)';
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// w,h are the dimensions of the canvas, everyone else is positioned accordingly
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Schematic.prototype.set_locations = function(w,h) {
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// limit the shrinkage factor
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w = Math.max(w,120);
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h = Math.max(h,120);
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this.width = w;
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this.height = h;
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this.bg_image.width = w;
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this.bg_image.height = h;
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this.min_x = 0;
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this.min_y = 0;
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this.max_x = w/this.scale;
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this.max_y = h/this.scale;
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// configure canvas
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this.canvas.style.left = background_margin + 'px';
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this.canvas.style.top = background_margin + 'px';
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this.canvas.width = w;
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this.canvas.height = h;
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this.redraw_background(); // redraw diagram
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// configure status bar
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this.status_div.style.left = background_margin + 'px';
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this.status_div.style.top = this.canvas.offsetTop + this.canvas.offsetHeight + 3 + 'px';
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this.status_div.style.width = (w - 4) + 'px'; // subtract interior padding
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this.status_div.style.height = status_height + 'px';
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// configure parts bin
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var total_w = this.canvas.offsetLeft + this.canvas.offsetWidth;
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var parts_left = total_w + 3;
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var parts_top = background_margin;
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var parts_h_limit = this.canvas.offsetTop + this.canvas.offsetHeight;
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for (var i = 0; i < this.parts_bin.length; i++) {
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var part = this.parts_bin[i];
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part.set_location(parts_left,parts_top);
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total_w = part.right();
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parts_top = part.bottom()-1;
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if (parts_top + part_h > parts_h_limit) {
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parts_left = total_w - 1;
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parts_top = background_margin;
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}
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}
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// configure background
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var total_h = this.status_div.offsetTop + this.status_div.offsetHeight + background_margin;
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total_w += background_margin;
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this.background.height = total_h;
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this.background.width = total_w;
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/* enable when there's support for resizing schematic
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// redraw thumb
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var c = this.background.getContext('2d');
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c.clearRect(0,0,w,h);
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c.strokeStyle = thumb_style;
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c.lineWidth = 1;
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c.beginPath();
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w = total_w - 1;
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h = total_h - 1;
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c.moveTo(w,h-4); c.lineTo(w-4,h);
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c.moveTo(w,h-8); c.lineTo(w-8,h);
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c.moveTo(w,h-12); c.lineTo(w-12,h);
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c.stroke();
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*/
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}
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// update the value field of our corresponding input field with JSON
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// representation of schematic
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Schematic.prototype.update_value = function() {
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// to do: fill in this.input.value
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}
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Schematic.prototype.add_component = function(new_c) {
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this.components.push(new_c);
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// create undoable edit record here
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}
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Schematic.prototype.remove_component = function(c) {
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var index = this.components.indexOf(c);
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if (index != -1) this.components.splice(index,1);
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}
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// add connection point to list of connection points at that location
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Schematic.prototype.add_connection_point = function(cp) {
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cplist = this.connection_points[cp.location]
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if (cplist) cplist.push(cp);
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else {
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cplist = [cp];
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this.connection_points[cp.location] = cplist;
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}
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// return list of conincident connection points
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return cplist;
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}
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// remove connection point from the list points at the old location
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Schematic.prototype.remove_connection_point = function(cp,old_location) {
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// remove cp from list at old location
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var cplist = this.connection_points[old_location];
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if (cplist) {
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var index = cplist.indexOf(cp);
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if (index != -1) {
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cplist.splice(index,1);
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// if no more connections at this location, remove
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// entry from array to keep our search time short
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if (cplist.length == 0)
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delete this.connection_points[old_location];
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}
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}
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}
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// connection point has changed location: remove, then add
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Schematic.prototype.update_connection_point = function(cp,old_location) {
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this.remove_connection_point(cp,old_location);
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return this.add_connection_point(cp);
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}
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// add a wire to the schematic
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Schematic.prototype.add_wire = function(x1,y1,x2,y2) {
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var new_wire = new Wire(this,x1,y1,x2,y2);
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this.add_component(new_wire);
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new_wire.move_end();
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return new_wire;
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}
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// see if connection points of component c split any wires
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Schematic.prototype.check_wires = function(c) {
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for (var i = this.components.length - 1; i >=0; --i) {
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var cc = this.components[i];
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if (cc != c) { // don't check a component against itself
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// only wires will do return non-null from a bisect call
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var cp = cc.bisect(c);
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if (cp) {
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// cc is a wire bisected by connection point cp
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// remove biscted wire
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cc.delete();
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// add two new wires with cp in the middle
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this.add_wire(cc.x,cc.y,cp.x,cp.y);
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this.add_wire(cc.x+cc.dx,cc.y+cc.dy,cp.x,cp.y);
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this.redraw_background();
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break;
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}
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// Drawing support -- deals with scaling and scrolling of diagrama
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//
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////////////////////////////////////////////////////////////////////////////////
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// here to redraw background image containing static portions of the schematic.
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// Also redraws dynamic portion.
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Schematic.prototype.redraw_background = function() {
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var c = this.bg_image.getContext('2d');
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var w = this.bg_image.width;
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var h = this.bg_imageheight;
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// paint background color
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c.fillStyle = element_style;
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c.fillRect(0,0,this.width,this.height);
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// border
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//c.strokeStyle = "rgb(0,0,0)";
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//c.strokeRect(0,0,this.width,this.height);
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// grid
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c.strokeStyle = "rgb(128,128,128)";
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var first_x = this.min_x;
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var last_x = this.max_x;
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var first_y = this.min_y;
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var last_y = this.max_y;
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for (var i = first_x; i < last_x; i += this.grid)
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this.draw_line(c,i,first_y,i,last_y,0.1);
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for (var i = first_y; i < last_y; i += this.grid)
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this.draw_line(c,first_x,i,last_x,i,0.1);
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// unselected components
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for (var i = this.components.length - 1; i >= 0; --i) {
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var component = this.components[i];
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if (!component.selected) component.draw(c);
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}
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this.redraw(); // background changed, redraw on screen
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}
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// redraw what user sees = static image + dynamic parts
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Schematic.prototype.redraw = function() {
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var c = this.canvas.getContext('2d');
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// put static image in the background
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c.drawImage(this.bg_image, 0, 0);
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// selected components
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for (var i = this.components.length - 1; i >= 0; --i) {
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var component = this.components[i];
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if (component.selected) component.draw(c);
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}
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||||
// connection points: draw one at each location
|
||||
for (var location in this.connection_points) {
|
||||
var cplist = this.connection_points[location];
|
||||
cplist[0].draw(c,cplist.length);
|
||||
}
|
||||
|
||||
// draw new wire
|
||||
if (this.wire) {
|
||||
var r = this.wire;
|
||||
c.strokeStyle = selected_style;
|
||||
this.draw_line(c,r[0],r[1],r[2],r[3],1);
|
||||
}
|
||||
|
||||
// draw selection rectangle
|
||||
if (this.select_rect) {
|
||||
var r = this.select_rect;
|
||||
c.lineWidth = 1;
|
||||
c.strokeStyle = selected_style;
|
||||
c.beginPath();
|
||||
c.moveTo(r[0],r[1]);
|
||||
c.lineTo(r[0],r[3]);
|
||||
c.lineTo(r[2],r[3]);
|
||||
c.lineTo(r[2],r[1]);
|
||||
c.lineTo(r[0],r[1]);
|
||||
c.stroke();
|
||||
}
|
||||
|
||||
// finally overlay cursor
|
||||
if (this.drawCursor && this.draw_cursor) {
|
||||
//var x = this.cursor_x;
|
||||
//var y = this.cursor_y;
|
||||
//this.draw_text(c,'('+x+','+y+')',x+this.grid,y-this.grid,10);
|
||||
this.draw_cursor(c,this.cursor_x,this.cursor_y);
|
||||
}
|
||||
}
|
||||
|
||||
// draws a cross cursor
|
||||
Schematic.prototype.cross_cursor = function(c,x,y) {
|
||||
this.draw_line(c,x-this.grid,y,x+this.grid,y,1);
|
||||
this.draw_line(c,x,y-this.grid,x,y+this.grid,1);
|
||||
}
|
||||
|
||||
Schematic.prototype.draw_line = function(c,x1,y1,x2,y2,width) {
|
||||
c.lineWidth = width*this.scale;
|
||||
c.beginPath();
|
||||
c.moveTo((x1 - this.origin_x) * this.scale,(y1 - this.origin_y) * this.scale);
|
||||
c.lineTo((x2 - this.origin_x) * this.scale,(y2 - this.origin_y) * this.scale);
|
||||
c.stroke();
|
||||
}
|
||||
|
||||
Schematic.prototype.draw_arc = function(c,x,y,radius,start_radians,end_radians,anticlockwise,width,filled) {
|
||||
c.lineWidth = width*this.scale;
|
||||
c.beginPath();
|
||||
c.arc((x - this.origin_x)*this.scale,(y - this.origin_y)*this.scale,radius*this.scale,
|
||||
start_radians,end_radians,anticlockwise);
|
||||
if (filled) c.fill();
|
||||
else c.stroke();
|
||||
}
|
||||
|
||||
Schematic.prototype.draw_text = function(c,text,x,y,size) {
|
||||
c.font = size*this.scale+'pt sans-serif'
|
||||
c.fillText(text,(x - this.origin_x) * this.scale,(y - this.origin_y) * this.scale);
|
||||
}
|
||||
|
||||
// add method to canvas to compute relative coords for event
|
||||
HTMLCanvasElement.prototype.relMouseCoords = function(event){
|
||||
// run up the DOM tree to figure out coords for top,left of canvas
|
||||
var totalOffsetX = 0;
|
||||
var totalOffsetY = 0;
|
||||
var canvasY = 0;
|
||||
var currentElement = this;
|
||||
do {
|
||||
totalOffsetX += currentElement.offsetLeft;
|
||||
totalOffsetY += currentElement.offsetTop;
|
||||
}
|
||||
while(currentElement = currentElement.offsetParent);
|
||||
|
||||
// now compute relative position of click within the canvas
|
||||
this.mouse_x = event.pageX - totalOffsetX;
|
||||
this.mouse_y = event.pageY - totalOffsetY;
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Event handling
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// process special keys here since they don't get delivered correctly on keypress
|
||||
Schematic.prototype.key_down = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
var code = event.keyCode;
|
||||
|
||||
if (code == 8 || code == 46) {
|
||||
// delete selected components
|
||||
for (var i = sch.components.length - 1; i >= 0; --i) {
|
||||
var component = sch.components[i];
|
||||
if (component.selected) component.delete(1);
|
||||
}
|
||||
sch.redraw();
|
||||
event.preventDefault();
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// process normal characters
|
||||
Schematic.prototype.key_press = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
var code = window.event ? event.keyCode : event.charCode;
|
||||
var char = String.fromCharCode(code);
|
||||
|
||||
if (char == 'r' || char == 'R') {
|
||||
// rotate
|
||||
for (var i = sch.components.length - 1; i >= 0; --i) {
|
||||
var component = sch.components[i];
|
||||
if (component.selected) component.rotate(1);
|
||||
}
|
||||
sch.redraw();
|
||||
event.preventDefault();
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
Schematic.prototype.mouse_enter = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
|
||||
// see if user has selected a new part
|
||||
if (sch.new_part) {
|
||||
// grab incoming part, turn off selection of parts bin
|
||||
var part = sch.new_part;
|
||||
sch.new_part = null;
|
||||
part.select(false);
|
||||
|
||||
// make a clone of the component in the parts bin
|
||||
part = part.component.clone(sch,sch.cursor_x,sch.cursor_y);
|
||||
|
||||
// unselect everything else in the schematic, add part and select it
|
||||
sch.unselect_all(-1);
|
||||
sch.redraw_background(); // so we see any components that got unselected
|
||||
sch.add_component(part);
|
||||
part.set_select(true);
|
||||
|
||||
// and start dragging it
|
||||
sch.drag_begin();
|
||||
}
|
||||
|
||||
sch.drawCursor = true;
|
||||
sch.redraw();
|
||||
sch.canvas.focus(); // capture key strokes
|
||||
}
|
||||
|
||||
Schematic.prototype.mouse_leave = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
sch.drawCursor = false;
|
||||
sch.redraw();
|
||||
}
|
||||
|
||||
Schematic.prototype.unselect_all = function(which) {
|
||||
for (var i = this.components.length - 1; i >= 0; --i)
|
||||
if (i != which) this.components[i].set_select(false);
|
||||
}
|
||||
|
||||
Schematic.prototype.mouse_down = function(event) {
|
||||
if (!event) event = window.event;
|
||||
else event.preventDefault();
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
|
||||
// determine where event happened in schematic coordinates
|
||||
sch.canvas.relMouseCoords(event);
|
||||
var x = sch.canvas.mouse_x/sch.scale + sch.origin_x;
|
||||
var y = sch.canvas.mouse_y/sch.scale + sch.origin_y;
|
||||
sch.cursor_x = Math.round(x/sch.grid) * sch.grid;
|
||||
sch.cursor_y = Math.round(y/sch.grid) * sch.grid;
|
||||
|
||||
// is mouse over a connection point? If so, start dragging a wire
|
||||
var cplist = sch.connection_points[sch.cursor_x + ',' + sch.cursor_y];
|
||||
if (cplist && !event.shiftKey) {
|
||||
sch.unselect_all(-1);
|
||||
sch.wire = [sch.cursor_x,sch.cursor_y,sch.cursor_x,sch.cursor_y];
|
||||
} else {
|
||||
// give all components a shot at processing the selection event
|
||||
var which = -1;
|
||||
for (var i = sch.components.length - 1; i >= 0; --i)
|
||||
if (sch.components[i].select(x,y,event.shiftKey)) {
|
||||
if (sch.components[i].selected) {
|
||||
sch.drag_begin();
|
||||
which = i; // keep track of component we found
|
||||
}
|
||||
break;
|
||||
}
|
||||
// did we just click on a previously selected component?
|
||||
var reselect = which!=-1 && sch.components[which].was_previously_selected;
|
||||
|
||||
if (!event.shiftKey) {
|
||||
// if shift key isn't pressed and we didn't click on component
|
||||
// that was already selected, unselect everyone except component
|
||||
// we just clicked on
|
||||
if (!reselect) sch.unselect_all(which);
|
||||
|
||||
// if there's nothing to drag, set up a selection rectangle
|
||||
if (!sch.dragging) sch.select_rect = [sch.canvas.mouse_x,sch.canvas.mouse_y,
|
||||
sch.canvas.mouse_x,sch.canvas.mouse_y];
|
||||
}
|
||||
}
|
||||
|
||||
sch.redraw_background();
|
||||
}
|
||||
|
||||
Schematic.prototype.mouse_up = function(event) {
|
||||
if (!event) event = window.event;
|
||||
else event.preventDefault();
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
|
||||
// drawing a new wire
|
||||
if (sch.wire) {
|
||||
var r = sch.wire;
|
||||
sch.wire = null;
|
||||
|
||||
if (r[0]!=r[2] || r[1]!=r[3]) {
|
||||
// insert wire component
|
||||
sch.add_wire(r[0],r[1],r[2],r[3]);
|
||||
sch.redraw_background();
|
||||
} else sch.redraw();
|
||||
}
|
||||
|
||||
// dragging
|
||||
if (sch.dragging) sch.drag_end();
|
||||
|
||||
// selection rectangle
|
||||
if (sch.select_rect) {
|
||||
var r = sch.select_rect;
|
||||
|
||||
// if select_rect is a point, we've already dealt with selection
|
||||
// in mouse_down handler
|
||||
if (r[0]!=r[2] || r[1]!=r[3]) {
|
||||
// convert to schematic coordinates
|
||||
var s = [r[0]/sch.scale + sch.origin_x, r[1]/sch.scale + sch.origin_y,
|
||||
r[2]/sch.scale + sch.origin_x, r[3]/sch.scale + sch.origin_y];
|
||||
canonicalize(s);
|
||||
|
||||
if (!event.shiftKey) sch.unselect_all();
|
||||
|
||||
// select components that intersect selection rectangle
|
||||
for (var i = sch.components.length - 1; i >= 0; --i)
|
||||
sch.components[i].select_rect(s,event.shiftKey);
|
||||
}
|
||||
|
||||
sch.select_rect = null;
|
||||
sch.redraw_background();
|
||||
}
|
||||
}
|
||||
|
||||
Schematic.prototype.double_click = function(event) {
|
||||
if (!event) event = window.event;
|
||||
else event.preventDefault();
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
|
||||
// determine where event happened in schematic coordinates
|
||||
sch.canvas.relMouseCoords(event);
|
||||
var x = sch.canvas.mouse_x/sch.scale + sch.origin_x;
|
||||
var y = sch.canvas.mouse_y/sch.scale + sch.origin_y;
|
||||
sch.cursor_x = Math.round(x/sch.grid) * sch.grid;
|
||||
sch.cursor_y = Math.round(y/sch.grid) * sch.grid;
|
||||
|
||||
// see if we double-clicked a component. If so, edit it's properties
|
||||
for (var i = sch.components.length - 1; i >= 0; --i)
|
||||
if (sch.components[i].edit_properties(x,y)) break;
|
||||
}
|
||||
|
||||
Schematic.prototype.drag_begin = function() {
|
||||
// let components know they're about to move
|
||||
for (var i = this.components.length - 1; i >= 0; --i) {
|
||||
var component = this.components[i];
|
||||
if (component.selected) component.move_begin();
|
||||
}
|
||||
|
||||
// remember where drag started
|
||||
this.drag_x = this.cursor_x;
|
||||
this.drag_y = this.cursor_y;
|
||||
this.dragging = true;
|
||||
}
|
||||
|
||||
Schematic.prototype.drag_end = function() {
|
||||
// let components know they're done moving
|
||||
for (var i = this.components.length - 1; i >= 0; --i) {
|
||||
var component = this.components[i];
|
||||
if (component.selected) component.move_end();
|
||||
}
|
||||
this.dragging = false;
|
||||
}
|
||||
|
||||
Schematic.prototype.mouse_move = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var sch = (window.event) ? event.srcElement.schematic : event.target.schematic;
|
||||
|
||||
sch.canvas.relMouseCoords(event);
|
||||
var x = sch.canvas.mouse_x/sch.scale + sch.origin_x;
|
||||
var y = sch.canvas.mouse_y/sch.scale + sch.origin_y;
|
||||
sch.cursor_x = Math.round(x/sch.grid) * sch.grid;
|
||||
sch.cursor_y = Math.round(y/sch.grid) * sch.grid;
|
||||
|
||||
if (sch.wire) {
|
||||
// update new wire end point
|
||||
sch.wire[2] = sch.cursor_x;
|
||||
sch.wire[3] = sch.cursor_y;
|
||||
} else if (sch.dragging) {
|
||||
// see how far we moved
|
||||
var dx = sch.cursor_x - sch.drag_x;
|
||||
var dy = sch.cursor_y - sch.drag_y;
|
||||
if (dx != 0 || dy != 0) {
|
||||
// update position for next time
|
||||
sch.drag_x = sch.cursor_x;
|
||||
sch.drag_y = sch.cursor_y;
|
||||
|
||||
// give all components a shot at processing the event
|
||||
for (var i = sch.components.length - 1; i >= 0; --i) {
|
||||
var component = sch.components[i];
|
||||
if (component.selected) component.move(dx,dy);
|
||||
}
|
||||
}
|
||||
} else if (sch.select_rect) {
|
||||
// update moving corner of selection rectangle
|
||||
sch.select_rect[2] = sch.canvas.mouse_x;
|
||||
sch.select_rect[3] = sch.canvas.mouse_y;
|
||||
//sch.message(sch.select_rect.toString());
|
||||
}
|
||||
|
||||
// just redraw dynamic components
|
||||
sch.redraw();
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Status message and dialogs
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
Schematic.prototype.message = function(message) {
|
||||
this.status.nodeValue = message;
|
||||
this.recompute_height();
|
||||
}
|
||||
|
||||
Schematic.prototype.append_message = function(message) {
|
||||
this.status.nodeValue += ' / '+message;
|
||||
this.recompute_height();
|
||||
}
|
||||
|
||||
// set up a dialog with specified title, content and two buttons at
|
||||
// the bottom: OK and Cancel. If Cancel is clicked, dialog goes away
|
||||
// and we're done. If OK is clicked, dialog goes away and the
|
||||
// callback function is called with the content as an argument (so
|
||||
// that the values of any fields can be captured).
|
||||
Schematic.prototype.dialog = function(title,content,callback) {
|
||||
// create the div for the top level of the dialog, add to DOM
|
||||
var dialog = document.createElement('div');
|
||||
dialog.sch = this;
|
||||
dialog.content = content;
|
||||
|
||||
// div to hold the title
|
||||
var head = document.createElement('div');
|
||||
head.style.backgroundColor = 'black';
|
||||
head.style.color = 'white';
|
||||
head.style.textAlign = 'center';
|
||||
head.style.padding = '5px';
|
||||
head.appendChild(document.createTextNode(title));
|
||||
dialog.appendChild(head);
|
||||
|
||||
// div to hold the content
|
||||
var body = document.createElement('div');
|
||||
body.appendChild(content);
|
||||
body.style.padding = '5px';
|
||||
dialog.appendChild(body);
|
||||
|
||||
// OK button
|
||||
var ok_button = document.createElement('span');
|
||||
ok_button.appendChild(document.createTextNode('OK'));
|
||||
ok_button.dialog = dialog; // for the handler to use
|
||||
ok_button.addEventListener('click',dialog_okay,false);
|
||||
ok_button.style.border = '1px solid';
|
||||
ok_button.style.padding = '5px';
|
||||
ok_button.style.margin = '10px';
|
||||
|
||||
// cancel button
|
||||
var cancel_button = document.createElement('span');
|
||||
cancel_button.appendChild(document.createTextNode('Cancel'));
|
||||
cancel_button.dialog = dialog; // for the handler to use
|
||||
cancel_button.addEventListener('click',dialog_cancel,false);
|
||||
cancel_button.style.border = '1px solid';
|
||||
cancel_button.style.padding = '5px';
|
||||
cancel_button.style.margin = '10px';
|
||||
|
||||
// div to hold the two buttons
|
||||
var buttons = document.createElement('div');
|
||||
buttons.appendChild(ok_button);
|
||||
buttons.appendChild(cancel_button);
|
||||
buttons.style.padding = '5px';
|
||||
buttons.style.margin = '10px';
|
||||
dialog.appendChild(buttons);
|
||||
|
||||
// add to DOM
|
||||
dialog.style.background = 'white';
|
||||
dialog.style.zindex = '1000';
|
||||
dialog.style.position = 'absolute';
|
||||
dialog.style.left = this.canvas.mouse_x+'px';
|
||||
dialog.style.top = this.canvas.mouse_y+'px';
|
||||
dialog.style.border = '2px solid';
|
||||
dialog.callback = callback;
|
||||
this.div.appendChild(dialog);
|
||||
}
|
||||
|
||||
// callback when user click "Cancel" in a dialog
|
||||
function dialog_cancel(event) {
|
||||
if (!event) event = window.event;
|
||||
var dialog = (window.event) ? event.srcElement.dialog : event.target.dialog;
|
||||
|
||||
// remove the dialog from the top-level div of the schematic
|
||||
dialog.parentNode.removeChild(dialog);
|
||||
}
|
||||
|
||||
// callback when user click "OK" in a dialog
|
||||
function dialog_okay(event) {
|
||||
if (!event) event = window.event;
|
||||
var dialog = (window.event) ? event.srcElement.dialog : event.target.dialog;
|
||||
|
||||
// remove the dialog from the top-level div of the schematic
|
||||
dialog.parentNode.removeChild(dialog);
|
||||
|
||||
// invoke the callback with the dialog contents as the argument
|
||||
if (dialog.callback) dialog.callback(dialog.content);
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Parts bin
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// one instance will be created for each part in the parts bin
|
||||
function Part(sch) {
|
||||
this.sch = sch;
|
||||
this.component = null;
|
||||
this.selected = false;
|
||||
|
||||
// set up canvas
|
||||
this.canvas = document.createElement('canvas');
|
||||
this.canvas.style.borderStyle = 'solid';
|
||||
this.canvas.style.borderWidth = '1px';
|
||||
this.canvas.style.position = 'absolute';
|
||||
this.canvas.height = part_w;
|
||||
this.canvas.width = part_h;
|
||||
this.canvas.part = this;
|
||||
|
||||
this.canvas.addEventListener('mousedown',this.mouse_down,false);
|
||||
this.canvas.addEventListener('mouseup',this.mouse_up,false);
|
||||
|
||||
// make the part "clickable" by registering a dummy click handler
|
||||
// this should make things work on the iPad
|
||||
this.canvas.addEventListener('click',function(){},false);
|
||||
}
|
||||
|
||||
Part.prototype.set_location = function(left,top) {
|
||||
this.canvas.style.left = left + 'px';
|
||||
this.canvas.style.top = top + 'px';
|
||||
}
|
||||
|
||||
Part.prototype.right = function() {
|
||||
return this.canvas.offsetLeft + this.canvas.offsetWidth;
|
||||
}
|
||||
|
||||
Part.prototype.bottom = function() {
|
||||
return this.canvas.offsetTop + this.canvas.offsetHeight;
|
||||
}
|
||||
|
||||
Part.prototype.set_component = function(component) {
|
||||
this.component = component;
|
||||
|
||||
// figure out scaling and centering of parts icon
|
||||
var b = component.bounding_box;
|
||||
var dx = b[2] - b[0];
|
||||
var dy = b[3] - b[1];
|
||||
this.scale = 1; //Math.min(part_w/(1.2*dx),part_h/(1.2*dy));
|
||||
this.origin_x = this.scale*(b[0] + dx/2.0) - part_w/2.0;
|
||||
this.origin_y = this.scale*(b[1] + dy/2.0) - part_h/2.0;
|
||||
|
||||
this.redraw();
|
||||
}
|
||||
|
||||
Part.prototype.redraw = function(part) {
|
||||
var c = this.canvas.getContext('2d');
|
||||
|
||||
// paint background color
|
||||
c.fillStyle = this.selected ? selected_style : element_style;
|
||||
c.fillRect(0,0,part_w,part_h);
|
||||
|
||||
if (this.component) this.component.draw(c);
|
||||
}
|
||||
|
||||
Part.prototype.select = function(which) {
|
||||
this.selected = which;
|
||||
this.redraw();
|
||||
}
|
||||
|
||||
Part.prototype.update_connection_point = function(cp,old_location) {
|
||||
// no connection points in the parts bin
|
||||
}
|
||||
|
||||
Part.prototype.draw_line = function(c,x1,y1,x2,y2,width) {
|
||||
c.lineWidth = width*this.scale;
|
||||
c.beginPath();
|
||||
c.moveTo((x1 - this.origin_x) * this.scale,(y1 - this.origin_y) * this.scale);
|
||||
c.lineTo((x2 - this.origin_x) * this.scale,(y2 - this.origin_y) * this.scale);
|
||||
c.stroke();
|
||||
}
|
||||
|
||||
Part.prototype.draw_arc = function(c,x,y,radius,start_radians,end_radians,anticlockwise,width,filled) {
|
||||
c.lineWidth = width*this.scale;
|
||||
c.beginPath();
|
||||
c.arc((x - this.origin_x)*this.scale,(y - this.origin_y)*this.scale,radius*this.scale,
|
||||
start_radians,end_radians,anticlockwise);
|
||||
if (filled) c.fill();
|
||||
else c.stroke();
|
||||
}
|
||||
|
||||
Part.prototype.draw_text = function(c,text,x,y,size) {
|
||||
// no text displayed for the parts icon
|
||||
}
|
||||
|
||||
Part.prototype.mouse_down = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var part = (window.event) ? event.srcElement.part : event.target.part;
|
||||
|
||||
part.select(true);
|
||||
part.sch.new_part = part;
|
||||
}
|
||||
|
||||
Part.prototype.mouse_up = function(event) {
|
||||
if (!event) event = window.event;
|
||||
var part = (window.event) ? event.srcElement.part : event.target.part;
|
||||
|
||||
part.select(false);
|
||||
part.sch.new_part = null;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Rectangle helper functions
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// rect is an array of the form [left,top,right,bottom]
|
||||
|
||||
// ensure left < right, top < bottom
|
||||
function canonicalize(r) {
|
||||
var temp;
|
||||
|
||||
// canonicalize bounding box
|
||||
if (r[0] > r[2]) {
|
||||
temp = r[0];
|
||||
r[0] = r[2];
|
||||
r[2] = temp;
|
||||
}
|
||||
if (r[1] > r[3]) {
|
||||
temp = r[1];
|
||||
r[1] = r[3];
|
||||
r[3] = temp;
|
||||
}
|
||||
}
|
||||
|
||||
function between(x,x1,x2) {
|
||||
return x1 <= x && x <= x2;
|
||||
}
|
||||
|
||||
function inside(rect,x,y) {
|
||||
return between(x,rect[0],rect[2]) && between(y,rect[1],rect[3]);
|
||||
}
|
||||
|
||||
// only works for manhattan rectangles
|
||||
function intersect(r1,r2) {
|
||||
// look for non-intersection, negate result
|
||||
var result = !(r2[0] > r1[2] ||
|
||||
r2[2] < r1[0] ||
|
||||
r2[1] > r1[3] ||
|
||||
r2[3] < r1[1]);
|
||||
|
||||
// if I try to return the above expression, javascript returns undefined!!!
|
||||
return result;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Component base class
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
property_size = 5; // point size for Component property text
|
||||
normal_style = 'rgb(0,0,0)'; // color for unselected components
|
||||
selected_style = 'rgb(64,255,64)'; // highlight color for selected components
|
||||
|
||||
function Component(sch,x,y,rotation) {
|
||||
this.sch = sch;
|
||||
this.x = x;
|
||||
this.y = y;
|
||||
this.rotation = rotation;
|
||||
this.selected = false;
|
||||
this.properties = new Array();
|
||||
this.bounding_box = [0,0,0,0]; // in device coords [left,top,right,bottom]
|
||||
this.bbox = this.bounding_box; // in absolute coords
|
||||
this.connections = [];
|
||||
}
|
||||
|
||||
Component.prototype.add_connection = function(offset_x,offset_y) {
|
||||
this.connections.push(new ConnectionPoint(this,offset_x,offset_y));
|
||||
}
|
||||
|
||||
Component.prototype.update_coords = function() {
|
||||
var x = this.x;
|
||||
var y = this.y;
|
||||
|
||||
// update bbox
|
||||
var b = this.bounding_box;
|
||||
this.bbox[0] = this.transform_x(b[0],b[1]) + x;
|
||||
this.bbox[1] = this.transform_y(b[0],b[1]) + y;
|
||||
this.bbox[2] = this.transform_x(b[2],b[3]) + x;
|
||||
this.bbox[3] = this.transform_y(b[2],b[3]) + y;
|
||||
canonicalize(this.bbox);
|
||||
|
||||
// update connections
|
||||
for (var i = this.connections.length - 1; i >= 0; --i)
|
||||
this.connections[i].update_location();
|
||||
}
|
||||
|
||||
Component.prototype.rotate = function(amount) {
|
||||
var old_rotation = this.rotation;
|
||||
this.rotation = (this.rotation + amount) % 8;
|
||||
this.update_coords();
|
||||
|
||||
// create an undoable edit record here
|
||||
// using old_rotation
|
||||
}
|
||||
|
||||
Component.prototype.move_begin = function() {
|
||||
// remember where we started this move
|
||||
this.move_x = this.x;
|
||||
this.move_y = this.y;
|
||||
}
|
||||
|
||||
Component.prototype.move = function(dx,dy) {
|
||||
// update coordinates
|
||||
this.x += dx;
|
||||
this.y += dy;
|
||||
this.update_coords();
|
||||
}
|
||||
|
||||
Component.prototype.move_end = function() {
|
||||
var dx = this.x - this.move_x;
|
||||
var dy = this.y - this.move_y;
|
||||
|
||||
if (dx != 0 || dy != 0) {
|
||||
// create an undoable edit record here
|
||||
|
||||
this.sch.check_wires(this);
|
||||
}
|
||||
}
|
||||
|
||||
Component.prototype.delete = function() {
|
||||
// remove connection points from schematic
|
||||
for (var i = this.connections.length - 1; i >= 0; --i) {
|
||||
var cp = this.connections[i];
|
||||
this.sch.remove_connection_point(cp,cp.location);
|
||||
}
|
||||
|
||||
// remove component from schematic
|
||||
this.sch.remove_component(this);
|
||||
|
||||
// create an undoable edit record here
|
||||
}
|
||||
|
||||
Component.prototype.transform_x = function(x,y) {
|
||||
var rot = this.rotation;
|
||||
if (rot == 0 || rot == 6) return x;
|
||||
else if (rot == 1 || rot == 5) return -y;
|
||||
else if (rot == 2 || rot == 4) return -x;
|
||||
else return y;
|
||||
}
|
||||
|
||||
Component.prototype.transform_y = function(x,y) {
|
||||
var rot = this.rotation;
|
||||
if (rot == 1 || rot == 7) return x;
|
||||
else if (rot == 2 || rot == 6) return -y;
|
||||
else if (rot == 3 || rot == 5) return -x;
|
||||
else return y;
|
||||
}
|
||||
|
||||
Component.prototype.draw_line = function(c,x1,y1,x2,y2) {
|
||||
c.strokeStyle = this.selected ? selected_style : normal_style;
|
||||
var nx1 = this.transform_x(x1,y1) + this.x;
|
||||
var ny1 = this.transform_y(x1,y1) + this.y;
|
||||
var nx2 = this.transform_x(x2,y2) + this.x;
|
||||
var ny2 = this.transform_y(x2,y2) + this.y;
|
||||
this.sch.draw_line(c,nx1,ny1,nx2,ny2,1);
|
||||
}
|
||||
|
||||
Component.prototype.draw_circle = function(c,x,y,radius,filled) {
|
||||
if (filled) c.fillStyle = this.selected ? selected_style : normal_style;
|
||||
else c.strokeStyle = this.selected ? selected_style : normal_style;
|
||||
var nx = this.transform_x(x,y) + this.x;
|
||||
var ny = this.transform_y(x,y) + this.y;
|
||||
|
||||
this.sch.draw_arc(c,nx,ny,radius,0,2*Math.PI,false,1,filled);
|
||||
}
|
||||
|
||||
rot_angle = [
|
||||
0.0, // NORTH (identity)
|
||||
Math.PI/2, // EAST (rot270)
|
||||
Math.PI, // SOUTH (rot180)
|
||||
3*Math.PI/2, // WEST (rot90)
|
||||
0.0, // RNORTH (negy)
|
||||
Math.PI/2, // REAST (int-neg)
|
||||
Math.PI, // RSOUTH (negx)
|
||||
3*Math.PI/2, // RWEST (int-pos)
|
||||
];
|
||||
|
||||
Component.prototype.draw_arc = function(c,x,y,radius,start_radians,end_radians) {
|
||||
c.strokeStyle = this.selected ? selected_style : normal_style;
|
||||
var nx = this.transform_x(x,y) + this.x;
|
||||
var ny = this.transform_y(x,y) + this.y;
|
||||
this.sch.draw_arc(c,nx,ny,radius,
|
||||
start_radians+rot_angle[this.rotation],end_radians+rot_angle[this.rotation],
|
||||
false,1,false);
|
||||
}
|
||||
|
||||
Component.prototype.draw = function(c) {
|
||||
}
|
||||
|
||||
// result of rotating an alignment [rot*9 + align]
|
||||
aOrient = [
|
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, // NORTH (identity)
|
||||
2, 5, 8, 1, 4, 7, 0, 3, 6, // EAST (rot270)
|
||||
8, 7, 6, 5, 4, 3, 2, 1, 0, // SOUTH (rot180)
|
||||
6, 3, 0, 7, 4, 1, 8, 5, 3, // WEST (rot90)
|
||||
2, 1, 0, 5, 4, 3, 8, 7, 6, // RNORTH (negy)
|
||||
8, 5, 2, 7, 4, 1, 6, 3, 0, // REAST (int-neg)
|
||||
6, 7, 8, 3, 4, 5, 0, 1, 2, // RSOUTH (negx)
|
||||
0, 3, 6, 1, 4, 7, 2, 5, 8 // RWEST (int-pos)
|
||||
];
|
||||
|
||||
textAlign = [
|
||||
'left', 'center', 'right',
|
||||
'left', 'center', 'right',
|
||||
'left', 'center', 'right'
|
||||
];
|
||||
|
||||
textBaseline = [
|
||||
'top', 'top', 'top',
|
||||
'middle', 'middle', 'middle',
|
||||
'bottom', 'bottom', 'bottom'
|
||||
];
|
||||
|
||||
Component.prototype.draw_text = function(c,text,x,y,alignment,size) {
|
||||
var a = aOrient[this.rotation*9 + alignment];
|
||||
c.textAlign = textAlign[a];
|
||||
c.textBaseline = textBaseline[a];
|
||||
c.fillStyle = this.selected ? selected_style : normal_style;
|
||||
this.sch.draw_text(c,text,
|
||||
this.transform_x(x,y) + this.x,
|
||||
this.transform_y(x,y) + this.y,
|
||||
size);
|
||||
}
|
||||
|
||||
Component.prototype.set_select = function(which) {
|
||||
if (which != this.selected) {
|
||||
this.selected = which;
|
||||
// create an undoable edit record here
|
||||
}
|
||||
}
|
||||
|
||||
Component.prototype.select = function(x,y,shiftKey) {
|
||||
this.was_previously_selected = this.selected;
|
||||
if (inside(this.bbox,x,y)) {
|
||||
this.set_select(shiftKey ? !this.selected : true);
|
||||
return true;
|
||||
} else return false;
|
||||
}
|
||||
|
||||
Component.prototype.select_rect = function(s) {
|
||||
this.was_previously_selected = this.selected;
|
||||
if (intersect(this.bbox,s))
|
||||
this.set_select(true);
|
||||
}
|
||||
|
||||
// if connection point of component c bisects the
|
||||
// wire represented by this compononent, return that
|
||||
// connection point. Otherwise return null.
|
||||
Component.prototype.bisect = function(c) {
|
||||
return null;
|
||||
}
|
||||
|
||||
Component.prototype.edit_properties = function(x,y) {
|
||||
if (inside(this.bbox,x,y)) {
|
||||
var content = document.createElement('table');
|
||||
content.style.marginBotton = '5px';
|
||||
content.fields = [];
|
||||
|
||||
// add an <input> field for each property
|
||||
for (var i in this.properties) {
|
||||
var label = document.createTextNode(i + ': ');
|
||||
var field = document.createElement('input');
|
||||
field.type = 'text';
|
||||
field.value = this.properties[i];
|
||||
field.size = 10;
|
||||
content.fields.push([i,field]);
|
||||
|
||||
var col1 = document.createElement('td');
|
||||
col1.appendChild(label);
|
||||
var col2 = document.createElement('td');
|
||||
col2.appendChild(field);
|
||||
var row = document.createElement('tr');
|
||||
row.appendChild(col1);
|
||||
row.appendChild(col2);
|
||||
row.style.verticalAlign = 'center';
|
||||
|
||||
content.appendChild(row);
|
||||
}
|
||||
|
||||
var component = this; // capture in closure below
|
||||
this.sch.dialog('Edit Properties',content,function(content) {
|
||||
var fields = content.fields;
|
||||
for (var i = fields.length - 1; i >= 0; i--)
|
||||
component.properties[fields[i][0]] = fields[i][1].value;
|
||||
component.sch.redraw(); // component is selected, so this will redraw it
|
||||
});
|
||||
return true;
|
||||
} else return false;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Connection point
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
connection_point_radius = 2;
|
||||
|
||||
function ConnectionPoint(parent,x,y) {
|
||||
this.parent = parent;
|
||||
this.offset_x = x;
|
||||
this.offset_y = y;
|
||||
this.location = '';
|
||||
this.update_location();
|
||||
}
|
||||
|
||||
ConnectionPoint.prototype.toString = function() {
|
||||
return '<ConnectionPoint ('+this.offset_x+','+this.offset_y+') '+this.parent.toString()+'>';
|
||||
}
|
||||
|
||||
ConnectionPoint.prototype.update_location = function() {
|
||||
// update location string which we use as a key to find coincident connection points
|
||||
var old_location = this.location;
|
||||
var parent = this.parent;
|
||||
var nx = parent.transform_x(this.offset_x,this.offset_y) + parent.x;
|
||||
var ny = parent.transform_y(this.offset_x,this.offset_y) + parent.y;
|
||||
this.x = nx;
|
||||
this.y = ny;
|
||||
this.location = nx + ',' + ny;
|
||||
|
||||
// add ourselves to the connection list for the new location
|
||||
parent.sch.update_connection_point(this,old_location);
|
||||
}
|
||||
|
||||
ConnectionPoint.prototype.coincident = function(x,y) {
|
||||
return this.x==x && this.y==y;
|
||||
}
|
||||
|
||||
ConnectionPoint.prototype.draw = function(c,n) {
|
||||
if (n != 2)
|
||||
this.parent.draw_circle(c,this.offset_x,this.offset_y,connection_point_radius,n > 2);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Wire
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
near_distance = 2; // how close to wire counts as "near by"
|
||||
|
||||
function Wire(sch,x1,y1,x2,y2) {
|
||||
// arbitrarily call x1,y1 the origin
|
||||
Component.call(this,sch,x1,y1,0);
|
||||
this.dx = x2 - x1;
|
||||
this.dy = y2 - y1;
|
||||
this.add_connection(0,0);
|
||||
this.add_connection(this.dx,this.dy);
|
||||
|
||||
// compute bounding box (expanded slightly)
|
||||
var r = [0,0,this.dx,this.dy];
|
||||
canonicalize(r);
|
||||
r[0] -= near_distance;
|
||||
r[1] -= near_distance;
|
||||
r[2] += near_distance;
|
||||
r[3] += near_distance;
|
||||
this.bounding_box = r;
|
||||
this.update_coords(); // update bbox
|
||||
|
||||
// used in selection calculations
|
||||
this.len = Math.sqrt(this.dx*this.dx + this.dy*this.dy);
|
||||
}
|
||||
Wire.prototype = new Component();
|
||||
Wire.prototype.constructor = Wire;
|
||||
|
||||
Wire.prototype.toString = function() {
|
||||
return '<Wire ('+this.x+','+this.y+') ('+(this.x+this.dx)+','+(this.y+this.dy)+')>';
|
||||
}
|
||||
|
||||
Wire.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,this.dx,this.dy);
|
||||
}
|
||||
|
||||
Wire.prototype.clone = function(sch,x,y) {
|
||||
return new Wire(sch,x,y,x+this.dx,y+this.dy);
|
||||
}
|
||||
|
||||
Wire.prototype.near = function(x,y) {
|
||||
// crude check: (x,y) within expanded bounding box of wire
|
||||
if (inside(this.bbox,x,y)) {
|
||||
// compute distance between x,y and nearst point on line
|
||||
// http://www.allegro.cc/forums/thread/589720
|
||||
var D = Math.abs((x - this.x)*this.dy - (y - this.y)*this.dx)/this.len;
|
||||
if (D <= near_distance) return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
Wire.prototype.select = function(x,y,shiftKey) {
|
||||
this.was_previously_selected = this.selected;
|
||||
if (this.near(x,y)) {
|
||||
this.set_select(shiftKey ? !this.selected : true);
|
||||
return true;
|
||||
} else return false;
|
||||
}
|
||||
|
||||
// selection rectangle selects wire only if it includes
|
||||
// one of the end points
|
||||
Wire.prototype.select_rect = function(s) {
|
||||
this.was_previously_selected = this.selected;
|
||||
if (inside(s,this.x,this.y) || inside(s,this.x+this.dx,this.y+this.dy))
|
||||
this.set_select(true);
|
||||
}
|
||||
|
||||
// if connection point of component c bisects the
|
||||
// wire represented by this compononent, return that
|
||||
// connection point. Otherwise return null.
|
||||
Wire.prototype.bisect = function(c) {
|
||||
for (var i = c.connections.length - 1; i >= 0; --i) {
|
||||
var cp = c.connections[i];
|
||||
var x = cp.x;
|
||||
var y = cp.y;
|
||||
|
||||
// crude check: (x,y) within expanded bounding box of wire
|
||||
if (inside(this.bbox,x,y)) {
|
||||
// compute distance between x,y and nearst point on line
|
||||
// http://www.allegro.cc/forums/thread/589720
|
||||
var D = Math.abs((x - this.x)*this.dy - (y - this.y)*this.dx)/this.len;
|
||||
// final check: ensure point isn't an end point of the wire
|
||||
if (D < 1 && !this.connections[0].coincident(x,y) && !this.connections[1].coincident(x,y))
|
||||
return cp;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
Wire.prototype.move_end = function() {
|
||||
this.sch.check_wires(this);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Ground
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
function Ground(sch,x,y,rotation) {
|
||||
Component.call(this,sch,x,y,rotation);
|
||||
this.add_connection(0,0);
|
||||
this.bounding_box = [-6,0,6,8];
|
||||
this.update_coords();
|
||||
}
|
||||
Ground.prototype = new Component();
|
||||
Ground.prototype.constructor = Ground;
|
||||
|
||||
Ground.prototype.toString = function() {
|
||||
return '<Ground ('+this.x+','+this.y+')>';
|
||||
}
|
||||
|
||||
Ground.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,0,8);
|
||||
this.draw_line(c,-6,8,6,8);
|
||||
}
|
||||
|
||||
Ground.prototype.clone = function(sch,x,y) {
|
||||
return new Ground(sch,x,y,this.rotation);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Resistor
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
function Resistor(sch,x,y,rotation,name,r) {
|
||||
Component.call(this,sch,x,y,rotation);
|
||||
this.properties['name'] = name;
|
||||
this.properties['r'] = r ? r : '1';
|
||||
this.add_connection(0,0);
|
||||
this.add_connection(0,48);
|
||||
this.bounding_box = [-4,0,4,48];
|
||||
this.update_coords();
|
||||
}
|
||||
Resistor.prototype = new Component();
|
||||
Resistor.prototype.constructor = Resistor;
|
||||
|
||||
Resistor.prototype.toString = function() {
|
||||
return '<Resistor '+this.properties['r']+' ('+this.x+','+this.y+')>';
|
||||
}
|
||||
|
||||
Resistor.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,0,12);
|
||||
this.draw_line(c,0,12,4,14);
|
||||
this.draw_line(c,4,14,-4,18);
|
||||
this.draw_line(c,-4,18,4,22);
|
||||
this.draw_line(c,4,22,-4,26);
|
||||
this.draw_line(c,-4,26,4,30);
|
||||
this.draw_line(c,4,30,-4,34);
|
||||
this.draw_line(c,-4,34,0,36);
|
||||
this.draw_line(c,0,36,0,48);
|
||||
if (this.properties['r'])
|
||||
this.draw_text(c,this.properties['r']+'\u03A9',5,24,3,property_size);
|
||||
if (this.properties['name'])
|
||||
this.draw_text(c,this.properties['name'],-5,24,5,property_size);
|
||||
}
|
||||
|
||||
Resistor.prototype.clone = function(sch,x,y) {
|
||||
return new Resistor(sch,x,y,this.rotation,'',this.properties['r']);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Capacitor
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
function Capacitor(sch,x,y,rotation,name,c) {
|
||||
Component.call(this,sch,x,y,rotation);
|
||||
this.properties['name'] = name;
|
||||
this.properties['c'] = c ? c : '1p';
|
||||
this.add_connection(0,0);
|
||||
this.add_connection(0,48);
|
||||
this.bounding_box = [-8,0,8,48];
|
||||
this.update_coords();
|
||||
}
|
||||
Capacitor.prototype = new Component();
|
||||
Capacitor.prototype.constructor = Capacitor;
|
||||
|
||||
Capacitor.prototype.toString = function() {
|
||||
return '<Capacitor '+this.properties['r']+' ('+this.x+','+this.y+')>';
|
||||
}
|
||||
|
||||
Capacitor.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,0,22);
|
||||
this.draw_line(c,-8,22,8,22);
|
||||
this.draw_line(c,-8,26,8,26);
|
||||
this.draw_line(c,0,26,0,48);
|
||||
if (this.properties['c'])
|
||||
this.draw_text(c,this.properties['c']+'F',9,24,3,property_size);
|
||||
if (this.properties['name'])
|
||||
this.draw_text(c,this.properties['name'],-9,24,5,property_size);
|
||||
}
|
||||
|
||||
Capacitor.prototype.clone = function(sch,x,y) {
|
||||
return new Capacitor(sch,x,y,this.rotation,'',this.properties['c']);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Inductor
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
function Inductor(sch,x,y,rotation,name,l) {
|
||||
Component.call(this,sch,x,y,rotation);
|
||||
this.properties['name'] = name;
|
||||
this.properties['l'] = l ? l : '1n';
|
||||
this.add_connection(0,0);
|
||||
this.add_connection(0,48);
|
||||
this.bounding_box = [-4,0,5,48];
|
||||
this.update_coords();
|
||||
}
|
||||
Inductor.prototype = new Component();
|
||||
Inductor.prototype.constructor = Inductor;
|
||||
|
||||
Inductor.prototype.toString = function() {
|
||||
return '<Inductor '+this.properties['l']+' ('+this.x+','+this.y+')>';
|
||||
}
|
||||
|
||||
Inductor.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,0,14);
|
||||
this.draw_arc(c,0,18,4,6*Math.PI/4,3*Math.PI/4);
|
||||
this.draw_arc(c,0,24,4,5*Math.PI/4,3*Math.PI/4);
|
||||
this.draw_arc(c,0,30,4,5*Math.PI/4,2*Math.PI/4);
|
||||
this.draw_line(c,0,34,0,48);
|
||||
|
||||
if (this.properties['l'])
|
||||
this.draw_text(c,this.properties['l']+'H',6,24,3,property_size);
|
||||
if (this.properties['name'])
|
||||
this.draw_text(c,this.properties['name'],-3,24,5,property_size);
|
||||
}
|
||||
|
||||
Inductor.prototype.clone = function(sch,x,y) {
|
||||
return new Inductor(sch,x,y,this.rotation,'',this.properties['l']);
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Source
|
||||
//
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
function Source(sch,x,y,rotation,name,type,value) {
|
||||
Component.call(this,sch,x,y,rotation);
|
||||
this.type = type;
|
||||
this.properties['name'] = name;
|
||||
this.properties['value'] = value ? value : '1';
|
||||
this.add_connection(0,0);
|
||||
this.add_connection(0,48);
|
||||
this.bounding_box = [-12,0,12,48];
|
||||
this.update_coords();
|
||||
}
|
||||
Source.prototype = new Component();
|
||||
Source.prototype.constructor = Source;
|
||||
|
||||
Source.prototype.toString = function() {
|
||||
return '<'+this.type+'source '+this.properties['params']+' ('+this.x+','+this.y+')>';
|
||||
}
|
||||
|
||||
Source.prototype.draw = function(c) {
|
||||
this.draw_line(c,0,0,0,12);
|
||||
this.draw_circle(c,0,24,12,false);
|
||||
this.draw_line(c,0,36,0,48);
|
||||
|
||||
if (this.type == 'v') { // voltage source
|
||||
// draw + and -
|
||||
this.draw_line(c,8,5,8,11);
|
||||
this.draw_line(c,5,8,11,8);
|
||||
this.draw_line(c,5,40,11,40);
|
||||
// draw V
|
||||
this.draw_line(c,-3,20,0,28);
|
||||
this.draw_line(c,3,20,0,28);
|
||||
} else if (this.type == 'i') { // current source
|
||||
// draw arrow: pos to neg
|
||||
this.draw_line(c,0,16,0,32);
|
||||
this.draw_line(c,-3,24,0,32);
|
||||
this.draw_line(c,3,24,0,32);
|
||||
}
|
||||
|
||||
if (this.properties['name'])
|
||||
this.draw_text(c,this.properties['name'],-13,24,5,property_size);
|
||||
if (this.properties['value'])
|
||||
this.draw_text(c,this.properties['value']+(this.type=='v'?'V':'A'),13,24,3,property_size);
|
||||
}
|
||||
|
||||
Source.prototype.clone = function(sch,x,y) {
|
||||
return new Source(sch,x,y,this.rotation,'',this.type,this.properties['value']);
|
||||
}
|
||||
|
||||
function VSource(sch,x,y,rotation,name,value) {
|
||||
Source.call(this,sch,x,y,rotation,name,'v',value);
|
||||
|
||||
}
|
||||
VSource.prototype = new Component();
|
||||
VSource.prototype.constructor = VSource;
|
||||
VSource.prototype.toString = Source.prototype.toString;
|
||||
VSource.prototype.draw = Source.prototype.draw;
|
||||
VSource.prototype.clone = Source.prototype.clone;
|
||||
|
||||
function ISource(sch,x,y,rotation,name,value) {
|
||||
Source.call(this,sch,x,y,rotation,name,'i',value);
|
||||
|
||||
}
|
||||
ISource.prototype = new Component();
|
||||
ISource.prototype.constructor = ISource;
|
||||
ISource.prototype.toString = Source.prototype.toString;
|
||||
ISource.prototype.draw = Source.prototype.draw;
|
||||
ISource.prototype.clone = Source.prototype.clone;
|
||||
@@ -188,7 +188,7 @@ def render_x_module(request, xml_module):
|
||||
return content
|
||||
|
||||
def modx_dispatch(request, module=None, dispatch=None, id=None):
|
||||
''' Generic module for extensions. This handles AJAX. '''
|
||||
''' Generic module for extensions. '''
|
||||
s = StudentModule.objects.filter(module_type=module, student=request.user, module_id=id)
|
||||
if len(s) == 0:
|
||||
raise Http404
|
||||
@@ -229,7 +229,8 @@ def index(request, course="6.002 Spring 2012", chapter="Using the System", secti
|
||||
if not request.user.is_authenticated():
|
||||
return redirect('/')
|
||||
|
||||
# Fix URLs
|
||||
# Fixes URLs -- we don't get funny encoding characters from spaces
|
||||
# so they remain readable
|
||||
course=course.replace("_"," ")
|
||||
chapter=chapter.replace("_"," ")
|
||||
section=section.replace("_"," ")
|
||||
|
||||
Reference in New Issue
Block a user