[clinton/MarylandElectronicPetitionSignature.git] / index.html

<html>
<head>
<title>SBE Policy 2020-01: Temporary Electronic Petition Signature Acceptance</title>

<script type="text/javascript">
    // Variables for referencing the canvas and 2dcanvas context
    var canvas,ctx;

    // Variables to keep track of the mouse position and left-button status 
    var mouseX,mouseY,mouseDown=0;

    // Variables to keep track of the touch position
    var touchX,touchY;

    // Draws a dot at a specific position on the supplied canvas name
    // Parameters are: A canvas context, the x position, the y position, the size of the dot
    function drawDot(ctx,x,y,size) {
        // Let's use black by setting RGB values to 0, and 255 alpha (completely opaque)
        r=0; g=0; b=0; a=255;

        // Select a fill style
        ctx.fillStyle = "rgba("+r+","+g+","+b+","+(a/255)+")";

        // Draw a filled circle
        ctx.beginPath();
        ctx.arc(x, y, size, 0, Math.PI*2, true); 
        ctx.closePath();
        ctx.fill();
    } 

    // Clear the canvas context using the canvas width and height
    function clearCanvas(canvas,ctx) {
        ctx.clearRect(0, 0, canvas.width, canvas.height);
    }

    // Keep track of the mouse button being pressed and draw a dot at current location
    function sketchpad_mouseDown() {
        mouseDown=1;
        drawDot(ctx,mouseX,mouseY,12);
    }

    // Keep track of the mouse button being released
    function sketchpad_mouseUp() {
        mouseDown=0;
    }

    // Keep track of the mouse position and draw a dot if mouse button is currently pressed
    function sketchpad_mouseMove(e) { 
        // Update the mouse co-ordinates when moved
        getMousePos(e);

        // Draw a dot if the mouse button is currently being pressed
        if (mouseDown==1) {
            drawDot(ctx,mouseX,mouseY,12);
        }
    }

    // Get the current mouse position relative to the top-left of the canvas
    function getMousePos(e) {
        if (!e)
            var e = event;

        if (e.offsetX) {
            mouseX = e.offsetX;
            mouseY = e.offsetY;
        }
        else if (e.layerX) {
            mouseX = e.layerX;
            mouseY = e.layerY;
        }
     }

    // Draw something when a touch start is detected
    function sketchpad_touchStart() {
        // Update the touch co-ordinates
        getTouchPos();

        drawDot(ctx,touchX,touchY,12);

        // Prevents an additional mousedown event being triggered
        event.preventDefault();
    }

    // Draw something and prevent the default scrolling when touch movement is detected
    function sketchpad_touchMove(e) { 
        // Update the touch co-ordinates
        getTouchPos(e);

        // During a touchmove event, unlike a mousemove event, we don't need to check if the touch is engaged, since there will always be contact with the screen by definition.
        drawDot(ctx,touchX,touchY,12); 

        // Prevent a scrolling action as a result of this touchmove triggering.
        event.preventDefault();
    }

    // Get the touch position relative to the top-left of the canvas
    // When we get the raw values of pageX and pageY below, they take into account the scrolling on the page
    // but not the position relative to our target div. We'll adjust them using "target.offsetLeft" and
    // "target.offsetTop" to get the correct values in relation to the top left of the canvas.
    function getTouchPos(e) {
        if (!e)
            var e = event;

        if(e.touches) {
            if (e.touches.length == 1) { // Only deal with one finger
                var touch = e.touches[0]; // Get the information for finger #1
                touchX=touch.pageX-touch.target.offsetLeft;
                touchY=touch.pageY-touch.target.offsetTop;
            }
        }
    }


    // Set-up the canvas and add our event handlers after the page has loaded
    function init() {
        // Get the specific canvas element from the HTML document
        canvas = document.getElementById('sketchpad');

        // If the browser supports the canvas tag, get the 2d drawing context for this canvas
        if (canvas.getContext)
            ctx = canvas.getContext('2d');

        // Check that we have a valid context to draw on/with before adding event handlers
        if (ctx) {
            // React to mouse events on the canvas, and mouseup on the entire document
            canvas.addEventListener('mousedown', sketchpad_mouseDown, false);
            canvas.addEventListener('mousemove', sketchpad_mouseMove, false);
            window.addEventListener('mouseup', sketchpad_mouseUp, false);

            // React to touch events on the canvas
            canvas.addEventListener('touchstart', sketchpad_touchStart, false);
            canvas.addEventListener('touchmove', sketchpad_touchMove, false);
        }
    }
</script>

<style>
/* Some CSS styling */
#sketchpadapp {
    /* Prevent nearby text being highlighted when accidentally dragging mouse outside confines of the canvas */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    width: 800px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

#sketchpad {
    float:left;
    height:1035px;
    width:800px;
    border:2px solid #888;
    border-radius:4px;
    position:relative; /* Necessary for correct mouse co-ords in Firefox */
}
#clearbutton {
    font-size: 15px;
    padding: 10px;
    -webkit-appearance: none;
    background: #eee;
    border: 1px solid #888;
}
#img.source-image {
  width: 800px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}
</style>
</head>

<body onload="init()">
    <img class="source-image" src="Green-Party-petition.png" alt="" />
    <input type="submit" value="RESET" id="clearbutton" onclick="clearCanvas(canvas,ctx);">
    <div id="sketchpadapp">
        <div class="rightside">
            <canvas id="sketchpad" height="1035" width="800">
            </canvas>
        </div>
    </div>
</body>
</html>
Commit	Line	Data
e8d2a6c0 PM	1	<html>
	2	<head>
	3	<title>SBE Policy 2020-01: Temporary Electronic Petition Signature Acceptance</title>
	4
	5	<script type="text/javascript">
	6	// Variables for referencing the canvas and 2dcanvas context
	7	var canvas,ctx;
	8
	9	// Variables to keep track of the mouse position and left-button status
	10	var mouseX,mouseY,mouseDown=0;
	11
	12	// Variables to keep track of the touch position
	13	var touchX,touchY;
	14
	15	// Draws a dot at a specific position on the supplied canvas name
	16	// Parameters are: A canvas context, the x position, the y position, the size of the dot
	17	function drawDot(ctx,x,y,size) {
	18	// Let's use black by setting RGB values to 0, and 255 alpha (completely opaque)
	19	r=0; g=0; b=0; a=255;
	20
	21	// Select a fill style
	22	ctx.fillStyle = "rgba("+r+","+g+","+b+","+(a/255)+")";
	23
	24	// Draw a filled circle
	25	ctx.beginPath();
	26	ctx.arc(x, y, size, 0, Math.PI*2, true);
	27	ctx.closePath();
	28	ctx.fill();
	29	}
	30
	31	// Clear the canvas context using the canvas width and height
	32	function clearCanvas(canvas,ctx) {
	33	ctx.clearRect(0, 0, canvas.width, canvas.height);
	34	}
	35
	36	// Keep track of the mouse button being pressed and draw a dot at current location
	37	function sketchpad_mouseDown() {
	38	mouseDown=1;
	39	drawDot(ctx,mouseX,mouseY,12);
	40	}
	41
	42	// Keep track of the mouse button being released
	43	function sketchpad_mouseUp() {
	44	mouseDown=0;
	45	}
	46
	47	// Keep track of the mouse position and draw a dot if mouse button is currently pressed
	48	function sketchpad_mouseMove(e) {
	49	// Update the mouse co-ordinates when moved
	50	getMousePos(e);
	51
	52	// Draw a dot if the mouse button is currently being pressed
	53	if (mouseDown==1) {
	54	drawDot(ctx,mouseX,mouseY,12);
	55	}
	56	}
	57
	58	// Get the current mouse position relative to the top-left of the canvas
	59	function getMousePos(e) {
	60	if (!e)
	61	var e = event;
	62
	63	if (e.offsetX) {
	64	mouseX = e.offsetX;
65	mouseY = e.offsetY;
66	}
67	else if (e.layerX) {
68	mouseX = e.layerX;
69	mouseY = e.layerY;
70	}
71	}
72
73	// Draw something when a touch start is detected
74	function sketchpad_touchStart() {
75	// Update the touch co-ordinates
76	getTouchPos();
77
78	drawDot(ctx,touchX,touchY,12);
79
80	// Prevents an additional mousedown event being triggered
81	event.preventDefault();
82	}
83
84	// Draw something and prevent the default scrolling when touch movement is detected
85	function sketchpad_touchMove(e) {
86	// Update the touch co-ordinates
87	getTouchPos(e);
88
89	// During a touchmove event, unlike a mousemove event, we don't need to check if the touch is engaged, since there will always be contact with the screen by definition.
90	drawDot(ctx,touchX,touchY,12);
91
92	// Prevent a scrolling action as a result of this touchmove triggering.
93	event.preventDefault();
94	}
95
96	// Get the touch position relative to the top-left of the canvas
97	// When we get the raw values of pageX and pageY below, they take into account the scrolling on the page
98	// but not the position relative to our target div. We'll adjust them using "target.offsetLeft" and
99	// "target.offsetTop" to get the correct values in relation to the top left of the canvas.
100	function getTouchPos(e) {
101	if (!e)
102	var e = event;
103
104	if(e.touches) {
105	if (e.touches.length == 1) { // Only deal with one finger
106	var touch = e.touches[0]; // Get the information for finger #1
107	touchX=touch.pageX-touch.target.offsetLeft;
108	touchY=touch.pageY-touch.target.offsetTop;
109	}
110	}
111	}
112
113
114	// Set-up the canvas and add our event handlers after the page has loaded
115	function init() {
116	// Get the specific canvas element from the HTML document
117	canvas = document.getElementById('sketchpad');
118
119	// If the browser supports the canvas tag, get the 2d drawing context for this canvas
120	if (canvas.getContext)
121	ctx = canvas.getContext('2d');
122
123	// Check that we have a valid context to draw on/with before adding event handlers
124	if (ctx) {
125	// React to mouse events on the canvas, and mouseup on the entire document
126	canvas.addEventListener('mousedown', sketchpad_mouseDown, false);
127	canvas.addEventListener('mousemove', sketchpad_mouseMove, false);
128	window.addEventListener('mouseup', sketchpad_mouseUp, false);
129
130	// React to touch events on the canvas
131	canvas.addEventListener('touchstart', sketchpad_touchStart, false);
132	canvas.addEventListener('touchmove', sketchpad_touchMove, false);
133	}
134	}
135	</script>
136
137	<style>
138	/* Some CSS styling */
139	#sketchpadapp {
140	/* Prevent nearby text being highlighted when accidentally dragging mouse outside confines of the canvas */
141	-webkit-touch-callout: none;
142	-webkit-user-select: none;
143	-khtml-user-select: none;
144	-moz-user-select: none;
145	-ms-user-select: none;
146	user-select: none;
f10b753e	147	width: 800px;
e8d2a6c0 PM	148	position: absolute;
	149	top: 0;
	150	left: 0;
	151	z-index: 0;
	152	}
f10b753e	153
e8d2a6c0 PM	154	#sketchpad {
e8d2a6c0 PM	155	float:left;
f10b753e PM	156	height:1035px;
f10b753e PM	157	width:800px;
e8d2a6c0 PM	158	border:2px solid #888;
	159	border-radius:4px;
	160	position:relative; /* Necessary for correct mouse co-ords in Firefox */
	161	}
	162	#clearbutton {
	163	font-size: 15px;
	164	padding: 10px;
	165	-webkit-appearance: none;
	166	background: #eee;
	167	border: 1px solid #888;
	168	}
	169	#img.source-image {
f10b753e	170	width: 800px;
e8d2a6c0 PM	171	position: absolute;
	172	top: 0;
	173	left: 0;
	174	z-index: -1;
	175	}
	176	</style>
	177	</head>
	178
	179	<body onload="init()">
f10b753e	180	<img class="source-image" src="Green-Party-petition.png" alt="" />
e8d2a6c0 PM	181	<input type="submit" value="RESET" id="clearbutton" onclick="clearCanvas(canvas,ctx);">
	182	<div id="sketchpadapp">
	183	<div class="rightside">
f10b753e	184	<canvas id="sketchpad" height="1035" width="800">
e8d2a6c0 PM	185	</canvas>
	186	</div>
	187	</div>
	188	</body>
	189	</html>