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sigplot.js
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sigplot.js
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/**
* @license
* File: sigplot.js
* Copyright (c) 2012-2017, LGS Innovations Inc., All rights reserved.
*
* This file is part of SigPlot.
*
* Licensed to the LGS Innovations (LGS) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. LGS licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*jslint nomen: true, browser: true, devel: true */
/* global module */
/* global require */
(function() {
var version = "version-PLACEHOLDER";
var _ = require("underscore");
var Spinner = require("spin");
var common = require("./common");
var sigfile = require("sigfile");
var bluefile = sigfile.bluefile;
var matfile = sigfile.matfile;
var m = require("./m");
var mx = require("./mx");
var Layer1D = require("./sigplot.layer1d");
var Layer2D = require("./sigplot.layer2d");
function sigplot(element, options) {
if (!(this instanceof sigplot)) {
return new sigplot.Plot(element, options);
}
}
sigplot.bluefile = bluefile;
sigplot.matfile = matfile;
sigplot.m = m;
sigplot.mx = mx;
sigplot.Layer1D = Layer1D;
sigplot.Layer2D = Layer2D;
sigplot.version = version;
/**
* Text of the keypress help dialog.
*
* @memberOf sigplot
* @private
*/
var KEYPRESS_HELP = "Keypress Table:\n" +
"--------------\n" +
"? - Main help box.\n" +
"A - Toggle display x,y readouts:\n" +
" (absc) -> (index) -> (1/absc) -> (time).\n" +
"B - Toggle LM Drag Mode:\n" +
" (box) -> (horizontal) -> (vertical).\n" +
"C - Toggle controls.\n" +
"K - Show Marker.\n" +
"L - Toggle legend.\n" +
"M - Pops up main menu\n" +
"R - Toggle display specs (x/y readout)\n" +
"S - Toggle display specs and axes.\n" +
"T - Popup box with timecode value at mouse.\n" +
"X - In 1D mode, popup box with X value at mouse.\n" +
" - In 2D mode, toggle x-cut display.\n" +
"Y - In 1D mode, popup box with Y value at mouse.\n" +
" - In 2D mode, toggle y-cut display.\n" +
"P - In 2D mode, displays p-cuts along side and bottom.\n" +
"F - Toggle fullscreen.\n" +
"Cntrl+I - Invert colors.";
/**
* Text of the main help dialog.
*
* @memberOf sigplot
* @private
*/
var MAIN_HELP = "To zoom, press and drag the left mouse (LM) over the region of interest and release. " +
"To unzoom, press right mouse (RM). Press the middle mouse (MM) button or press the 'M' key to open the main menu." +
"View the function of all keypresses by selecting 'Keypress Info' from the main menu.";
/**
* Options used when displaying the spinner.
*
* @memberOf sigplot
* @private
*/
var SPINNER_OPTS = {
lines: 13, // The number of lines to draw
length: 7, // The length of each line
width: 4, // The line thickness
radius: 10, // The radius of the inner circle
corners: 1, // Corner roundness (0..1)
rotate: 0, // The rotation offset
color: '#FFF', // #rgb or #rrggbb
speed: 1, // Rounds per second
trail: 60, // Afterglow percentage
shadow: false, // Whether to render a shadow
hwaccel: false, // Whether to use hardware acceleration
className: 'spinner', // The CSS class to assign to the spinner
zIndex: 2e9, // The z-index (defaults to 2000000000)
top: 'auto', // Top position relative to parent in px
left: 'auto' // Left position relative to parent in px
};
/**
* Attempts basic checks to determine if the browser is compatible with
* sigplot.
*
* @memberOf sigplot
* @private
*/
sigplot.browserIsCompatible = function browserIsCompatible() {
// We need a Canvas
var test_canvas = document.createElement('canvas');
var hascanvas = (test_canvas.getContext) ? true : false;
// We need ArrayBuffer
var hasarraybuf = ("ArrayBuffer" in window);
// File and FileReader are optional...and only
// required if the user wants to plot local files
return (hascanvas && hasarraybuf);
};
/**
* Construct and render a plot.
*
* @memberOf sigplot
* @constructor
*
* @example plot = new sigplot.Plot(document.getElementById('plot'), {[options]});
*
* @param element
* a 'div' DOM element
* @param [options]
* Key-value pairs whose values alter the behavior of the plot.
*
* @param {String}
* options.cmode the plot rendering mode "IN" = Index, "AB" =
* Abscissa (both of these, along with "__" can be added as prefixes to the other modes),
* "MA", "Magnitude" = Magnitude, "PH", "Phase" = Phase, "RE", "Real" = Real,
* "IM","Imaginary" = Imaginary, "LO", "D1", "10*log10" = 10*log, "L2" or "D2"
* , "20*log10" = 20*log, "RI", "Real/Imag", "Imag/Real","IR" = Real vs. Imaginary
*
* @param {String}
* options.phunits the phase units "D" = Degrees, "R" = Radians,
* "C" = Cycles
*
* @param {Boolean}
* options.cross display cross hairs on the plot
*
* @param {Boolean}
* options.nogrid hide the background grid
*
* @param {Boolean}
* options.legend set to false to hide the legend
*
* @param {Boolean}
* options.no_legend_button set to true to hide the legend button
*
* @param {Boolean}
* options.nopan disable panning on the plot
*
* @param {Boolean}
* options.nomenu disable the middle-click menu
*
* @param {Boolean}
* options.nospec hide all plot specification displays
*
* @param {Boolean}
* options.noxaxis hide the x-axis
*
* @param {Boolean}
* options.noyaxis hide the y-axis
*
* @param {Boolean}
* options.noreadout hide the plot readout area
*
* @param {Boolean}
* options.nodragdrop prevent file drag drop
*
* @param {Number}
* options.scroll_time_interval set the time interval for scrolling
*
* @param {Boolean}
* options.index use the data-index in the X axis
*
* @param {Number}
* options.autox auto-scaling settings for X axis !!!!CHANGED
*
* @param {Number}
* options.xmin the minimum range to display on the X axis
*
* @param {Number}
* options.xmax the maximum range to display on the X axis
*
* @param {Number}
* options.xlab the units that X-axis uses (see m.UNITS)
*
* @param {Object}
* options.xlabel function or string for custom X-axis label
*
* @param {Number}
* options.xdiv the number of divisions on the X axis
*
* @param {Number}
* options.xcnt configure the mtag mouse controls 0 = Off, 1
* (default) = LM Click, 2 = Continuous
*
* @param {String}
* options.rubberbox_mode controls the behavior of the rubberbox
* "zoom" (default) = zoom to the selected area "box" = trigger
* an mtag action on the selected area
*
* @param {String}
* options.rightclick_rubberbox_mode controls the behavior of the rubberbox
* "zoom" = zoom to the selected area "box" = trigger
* an mtag action on the selected area. By default is null to disable
* right-click boxes
*
* @param {Number}
* options.line the line type to draw 0 = None, 1 = Verticals, 2 =
* Horizontals, 3 (default) = Connecting
*
* @param {Number}
* options.autoy auto-scaling settings for Y axis !!!! CHANGED
* 0 = Fix , 1 = Auto Min , 2 = Auto Max, 3 = Full Auto
*
* @param {Number}
* options.ylab the units that Y-axis uses (see m.UNITS)
*
* @param {Object}
* options.ylabel function or string for custom Y-axis label
*
* @param {Number}
* options.ymin the minimum range to display on the Y axis
*
* @param {Number}
* options.ymax the maximum range to display on the Y axis
*
* @param {Number}
* options.ydiv the number of divisions on the Y axis
*
* @param {Number}
* options.zmin the minimum range to display on the Z axis
*
* @param {Number}
* options.zmax the maximum range to display on the Z axis
*
* @param {Boolean}
* options.yinv invert the y-axis
*
* @param {String}
* options.colors.fg the foreground color as a CSS color
*
* @param {String}
* options.colors.bg the background color as a CSS color
*
* @param {Boolean}
* options.xi invert the foreground/background colors
*
* @param {Boolean}
* options.all show all of the data on the plot instead of just
* one buffer
*
* @param {Boolean}
* options.expand auto-scale the plot based on all the data (when
* combined with the all option)
*
* @param {Number}
* options.origin 1 = x1:xmin, x2:xmax, y1:ymax, y2:ymin
* (default), 2 = x1:xmax, x2:xmin, y1:ymax, y2:ymin (x
* inverted), 3 = x1:xmax, x2:xmin, y1:ymin, y2:ymax (x & y
* inverted), 4 = x1:xmin, x2:xmax, y1:ymin, y2:ymax (y inverted)
*
* @param {Number}
* options.bufmax the buffer size to use
*
* @param {Boolean}
* options.nokeypress disable key press actions
*
* @param options.font_family
* the font family to use for text rendered on the plot. Monospace
* font will generally work best.
*
* @param {Boolean}
* options.font_scaled mimic the MIDAS plotting behaviour where the
* plot font-size is scaled relative to the width of the
*
* @param {Boolean}
* options.font_width sets the font width (default=8); if scaled_font
* is set to true, then the font width will be the minimum of font_width
* or plot width/64.
*
* @param {Number}
* options.panxpad
* Pad the x-axis panning with this amount. If a string in the form of
* "XX%" the padding will be a percentage.
*
* @param {Number}
* options.panypad
* Pad the y-axis panning with this amount. If a string in the form of
* "XX%" the padding will be a percentage.
*
* @returns {Plot}
*/
var Plot = function(element, options) {
if (!sigplot.browserIsCompatible()) {
throw "Browser is not compatible";
}
// Register with the Mx structure - Step #4
this._Mx = mx.open(element);
var Mx = this._Mx;
this._Gx = new GX();
this._Gx.parent = element;
// Variable which stores state of mouse position relative to the canvas
this.mouseOnCanvas = false;
if (!options) {
options = {};
}
plot_init(this, options);
this.mimicListeners = {
other: null,
listeners: {
zoom: null,
unzoom: null,
xpan: null,
ypan: null
}
};
this._refresh(); // Draw immediately
this.onmousemove = (function(plot) {
return function(e) {
var Mx = plot._Mx;
var Gx = plot._Gx;
var rect = e.target.getBoundingClientRect();
var xpos = (e.offsetX === undefined) ? (e.pageX - rect.left - window.scrollX) : e.offsetX;
var ypos = (e.offsetX === undefined) ? (e.pageY - rect.top - window.scrollY) : e.offsetY;
// var xpos = (e.offsetX === undefined) ? e.layerX : e.offsetX;
// var ypos = (e.offsetY === undefined) ? e.layerY : e.offsetY;
var re = pixel_to_real(plot, xpos, ypos);
Gx.retx = re.x;
Gx.rety = re.y;
if (Mx.widget) {
return;
}
display_specs(plot);
var evt = document.createEvent('Event');
evt.initEvent('mmove', true, true);
evt.originalEvent = e;
evt.xpos = xpos;
evt.ypos = ypos;
evt.x = Gx.retx;
evt.y = Gx.rety;
var executeDefault = mx.dispatchEvent(Mx, evt);
if (!executeDefault) {
return;
}
// The crosshair logic in websigplot is different
// because we need to clear the previous position
// of the line (via XOR) and then draw the new line
//
// The Mx.xpos and Mx.ypos may have already been
// updated to their new location so we need to store
// the crosshair position in the Gx structure
if (Gx.cross) {
if (Mx.warpbox) {
// during zoom operations undraw the crosshairs
if (Gx.cross_xpos !== undefined) {
mx.rubberline(Mx, Gx.cross_xpos, Mx.t,
Gx.cross_xpos, Mx.b);
}
if (Gx.cross_ypos !== undefined) {
mx.rubberline(Mx, Mx.l, Gx.cross_ypos, Mx.r,
Gx.cross_ypos);
}
Gx.cross_xpos = undefined;
Gx.cross_ypos = undefined;
} else {
if (plot.mouseOnCanvas) {
draw_crosshairs(plot);
if (Gx.p_cuts && (Gx.lyr.length === 1) && (Gx.lyr[0].hcb["class"] === 2)) {
if (!Gx.y_cut_press_on && !Gx.x_cut_press_on) {
draw_p_cuts(plot);
}
}
}
}
}
if (Gx.cntrls === 2) {
var evt = document.createEvent('Event');
evt.initEvent('mtag', true, true);
evt.originalEvent = e;
evt.x = Gx.retx;
evt.y = Gx.rety;
evt.xpos = xpos;
evt.ypos = ypos;
mx.dispatchEvent(Mx, evt);
}
};
}(this));
this.throttledOnMouseMove = m.throttle(this._Gx.scroll_time_interval,
this.onmousemove);
mx.addEventListener(Mx, "mousemove", this.throttledOnMouseMove, false);
this.onmouseout = (function(plot) {
return function(event) {
var Gx = plot._Gx;
var Mx = plot._Mx;
if (plot.mouseOnCanvas) {
plot.mouseOnCanvas = false;
if (Gx.autohide_readout) {
display_specs(plot);
}
if (Gx.autohide_panbars) {
draw_panbars(plot);
}
if (Mx.prompt) {
Mx.prompt.input.enableBlur();
}
}
};
}(this));
mx.addEventListener(Mx, "mouseout", this.onmouseout, false);
this.onmouseover = (function(plot) {
return function(event) {
var Gx = plot._Gx;
var Mx = plot._Mx;
plot.mouseOnCanvas = true;
if (Gx.autohide_panbars) {
draw_panbars(plot);
}
if (Mx.prompt) {
Mx.prompt.input.disableBlur();
}
};
}(this));
mx.addEventListener(Mx, "mouseover", this.onmouseover, false);
this.onmousedown = (function(plot) {
return function(event) {
event.preventDefault(); // mouse down on the canvas should never do a browser default action
var Mx = plot._Mx;
var Gx = plot._Gx;
if (Mx.widget && (Mx.widget.type === "ONESHOT")) {
Mx.widget = null;
plot.refresh();
}
// Update Mx event fields
mx.ifevent(Mx, event);
var evt = document.createEvent('Event');
evt.initEvent('mdown', true, true);
evt.originalEvent = event;
evt.xpos = Mx.xpos;
evt.ypos = Mx.ypos;
evt.x = Gx.retx;
evt.y = Gx.rety;
evt.which = event.which;
var executeDefault = mx.dispatchEvent(Mx, evt);
if (!executeDefault) {
return false;
}
// Check if event occured in the pan region
var inPan = inPanRegion(plot);
// Event processing
if (inPan.inPanRegion) { // Mouse position lies in a pan
// region
event.preventDefault();
if (inPan.command !== ' ') {
var scrollbar = null;
var position = null;
if (inPan.command === "XPAN") {
scrollbar = Mx.scrollbar_x;
} else if (inPan.command === "YPAN") {
scrollbar = Mx.scrollbar_y;
}
if (event.which === 2) {
position = {
x: Mx.xpos,
y: Mx.ypos
};
if ((scrollbar !== undefined) && (onScrollbar(position, scrollbar))) {
// Only show menu if on the scrollbar itself
sigplot_scrollScaleMenu(plot, inPan.command);
}
} else {
if (inPan.command !== ' ') {
position = {
x: Mx.xpos,
y: Mx.ypos
};
if (!onScrollbar(position, scrollbar) && event.which === 1) { // Left-clicking
// not on a
// scrollbar -
// handle
// typical pan
pan(plot, inPan.command, 0, event); // Execute
// the
// first
// pan
var repeatPan = function() {
if (!onScrollbar({
"x": Mx.xpos,
"y": Mx.ypos
}, scrollbar)) {
pan(plot, inPan.command, 0, event);
// execute
// a
// pan
// on
// every
// interval
} else {
// stop
// panning
// once you
// hit the
// scrollbar
if (Gx.stillPanning) {
window.clearInterval(Gx.stillPanning);
Gx.repeatPanning = undefined;
}
}
};
// Make scrolling smooth, the longer initial prevents
// a single click from counting twice
Gx.stillPanning = window.setTimeout(
function() {
Gx.repeatPanning = window.setInterval(repeatPan, 50);
}, 250);
}
}
}
}
} else { // Mouse not in a pan region, handle other cases
if (event.which === 1 || event.which === 3) {
var lButtonPressed = false;
if (Gx.legendBtnLocation) {
lButtonPressed = coordsInRectangle(Mx.xpos,
Mx.ypos, Gx.legendBtnLocation.x,
Gx.legendBtnLocation.y,
Gx.legendBtnLocation.width,
Gx.legendBtnLocation.height);
}
// a variable to hold the legend y positon of each layer
if (Gx.legend) {
var legendPos = get_legend_pos(plot);
var layerheight = legendPos.height / Gx.lyr.length;
for (var i = 0; i < Gx.lyr.length; i++) {
if ((legendPos.x <= Mx.xpos) && ((legendPos.x + legendPos.width) >= Mx.xpos) &&
((legendPos.y <= Mx.ypos)) && (legendPos.y + layerheight) >= Mx.ypos) {
//find a way to pull up the menu
Mx.mouseUpLatch = true;
sigplot_legend_menu(plot, i);
return false;
}
legendPos.y += layerheight;
}
}
// If we have a large colorbar, we also have buttons:
if (Gx.lg_colorbar && (Gx.lyr[0].hcb["class"] === 2)) {
if (event.which === 1 || event.which === 3) {
var mouse_x = Mx.xpos;
var mouse_y = Mx.ypos;
// Find vertex positions of top and bottom buttons
var top_x1 = Gx.cbb_top_x1;
var top_y1 = Gx.cbb_top_y1;
var top_x2 = top_x1 + Gx.cbb_width;
var top_y2 = top_y1;
var top_x3 = top_x1 + (1 / 2) * Gx.cbb_width;
var top_y3 = top_y1 - Gx.cbb_height;
var topButtonPressed = coordsInTriangle(mouse_x, mouse_y, top_x1, top_y1, top_x2, top_y2, top_x3, top_y3);
//console.log("Top ", topButtonPressed);
if (topButtonPressed) {
var cur_cmap = Gx.cmap;
plot.get_layer(0).img = undefined;
var current_map = m.Mc.colormap[cur_cmap];
for (var i = 0; i < current_map.colors.length; i++) {
current_map.colors[i].pos += 5.0;
}
mx.colormap(Mx, current_map.colors, 16);
//Gx.zoff += (1/10)*(Gx.zmax - Gx.zmin);
plot.refresh();
}
// bottom
var bot_x1 = Gx.cbb_bot_x1;
var bot_y1 = Gx.cbb_bot_y1;
var bot_x2 = bot_x1 + Gx.cbb_width;
var bot_y2 = bot_y1;
var bot_x3 = bot_x1 + (1 / 2) * Gx.cbb_width;
var bot_y3 = bot_y1 + Gx.cbb_height;
var botButtonPressed = coordsInTriangle(mouse_x, mouse_y, bot_x1, bot_y1, bot_x2, bot_y2, bot_x3, bot_y3);
if (botButtonPressed) {
//Gx.zoff -= (1/10)*(Gx.zmax - Gx.zmin);
var cur_cmap = Gx.cmap;
var current_map = m.Mc.colormap[cur_cmap];
plot.get_layer(0).img = undefined;
for (var i = 0; i < current_map.colors.length; i++) {
current_map.colors[i].pos -= 5.0;
}
mx.colormap(Mx, current_map.colors, 16);
plot.refresh();
}
}
}
if (lButtonPressed) {
plot.change_settings({
legend: !Gx.legend
}); // toggle the legend
} else {
display_specs(plot);
// Styles for rubberbox
var zoom_style = {
opacity: 0,
return_value: "zoom"
};
var select_style = {
opacity: 0.4,
fill_color: Mx.hi,
return_value: "select"
};
if (event.which === 1) {
if (Gx.default_rubberbox_action === "zoom") {
mx.rubberbox(Mx, rubberbox_cb(plot, event.which),
Gx.default_rubberbox_mode, zoom_style,
select_style);
} else if (Gx.default_rubberbox_action === "select") {
mx.rubberbox(Mx, rubberbox_cb(plot, event.which),
Gx.default_rubberbox_mode,
select_style, zoom_style);
} // otherwise rubber-box is considered disabled
} else if (event.which === 3) {
if (Gx.default_rightclick_rubberbox_action === "zoom") {
mx.rubberbox(Mx, rubberbox_cb(plot, event.which),
Gx.default_rightclick_rubberbox_mode, zoom_style,
select_style);
} else if (Gx.default_rightclick_rubberbox_action === "select") {
mx.rubberbox(Mx, rubberbox_cb(plot, event.which),
Gx.default_rightclick_rubberbox_mode,
select_style, zoom_style);
} // otherwise right-click rubber-box is considered disabled
}
}
} else if (event.which === 2) {
if (!Gx.nomenu) {
sigplot_mainmenu(plot);
}
}
}
return false;
};
}(this));
mx.addEventListener(Mx, "mousedown", this.onmousedown, false);
// Putting a finger on the screen and moving it, simulates
// pan.
this.ontouchstart = (function(plot) {
return function(event) {
event.preventDefault();
// See how many fingers are on the screen
// 1 finger == pan and/or unzoom
if (event.targetTouches.length === 1) {
// See if this is a double-tap
if (Mx.touchClear && Mx.touches) {
// Double tap unzooms to L=0 and fully expands the plot
window.clearTimeout(Mx.touchClear);
plot.unzoom();
middleClickScrollMenuAction(plot, mx.SB_FULL, "XPAN");
middleClickScrollMenuAction(plot, mx.SB_FULL, "YPAN");
} else {
// Normal touch prepares for panning
var touchEvent = event.targetTouches[0];
// Determine the touch position, relative to the canvas
var rect = touchEvent.target.getBoundingClientRect();
var position = {
x: (touchEvent.pageX - rect.left - window.scrollX),
y: (touchEvent.pageY - rect.top - window.scrollY)
};
// Update the Mx coordinates
Mx.xpos = m.bound(position.x, 0, Mx.width);
Mx.ypos = m.bound(position.y, 0, Mx.height);
// See if the finger lies on the pan-bars
var inPan = inPanRegion(plot, position);
if (!inPan.inPanRegion) {
Mx.touches = event.targetTouches;
} // TODO support touch 'pan' on the panbars
}
} else if (event.targetTouches.length === 2) {
Mx.touch_distance = m.touch_distance(event.targetTouches[0], event.targetTouches[1]);
}
};
}(this));
mx.addEventListener(Mx, "touchstart", this.ontouchstart, false);
this.ontouchmove = (function(plot) {
return function(event) {
var Mx = plot._Mx;
var Gx = plot._Gx;
var k = Mx.level;
event.preventDefault();
if (event.targetTouches.length === 1) {
// Determine the touch event position
var touchStart = Mx.touches[0];
var rect = touchStart.target.getBoundingClientRect();
var startPosition = {
x: (touchStart.pageX - rect.left - window.scrollX),
y: (touchStart.pageY - rect.top - window.scrollY)
};
var touchEvent = event.targetTouches[0];
var rect = touchEvent.target.getBoundingClientRect();
var position = {
x: (touchEvent.pageX - rect.left - window.scrollX),
y: (touchEvent.pageY - rect.top - window.scrollY)
};
var new_xpos = m.bound(position.x, 0, Mx.width);
var new_ypos = m.bound(position.y, 0, Mx.height);
var delta_xpos = new_xpos - Mx.xpos;
var delta_ypos = new_ypos - Mx.ypos;
Mx.xpos = new_xpos;
Mx.ypos = new_ypos;
var inPan = inPanRegion(plot, position);
// If we are in the pan region, don't take any action
if (inPan.inPanRegion) {
return;
}
// Pan proportionally to the movement of the touch
var xdelta = (Mx.stk[k].xscl * delta_xpos);
var ydelta = (Mx.stk[k].yscl * delta_ypos);
if (Mx.origin === 1) {
// regular x, regular y
xdelta *= -1;
} else if (Mx.origin === 2) {
// inverted x, regular y
ydelta *= -1;
} else if (Mx.origin === 3) {
// inverted x, inverted y
ydelta *= -1;
} else if (Mx.origin === 4) {
// regular x, inverted y
xdelta *= -1;
ydelta *= -1;
}
var xmin = Mx.stk[k].xmin + xdelta;
var xmax = Mx.stk[k].xmax + xdelta;
var ymin = Mx.stk[k].ymin + ydelta;
var ymax = Mx.stk[k].ymax + ydelta;
if ((xmin >= Gx.xmin) && (xmax <= Gx.xmax)) {
Mx.stk[k].xmin = xmin;
Mx.stk[k].xmax = xmax;
}
if ((ymin >= Gx.ymin) && (ymax <= Gx.ymax)) {
Mx.stk[k].ymin = ymin;
Mx.stk[k].ymax = ymax;
}
if (Gx.cmode === Gx.basemode && Mx.level === 1) {
Gx.xmin = Math.min(Gx.xmin, xmin);
Gx.xmax = Math.max(Gx.xmax, xmax);
Gx.ymin = Math.min(Gx.ymin, ymin);
Gx.ymax = Math.max(Gx.ymax, ymax);
}
plot.refresh();
} else if (event.targetTouches.length === 2) {
var cur_distance = m.touch_distance(event.targetTouches[0], event.targetTouches[1]);
var scaling = (1 - (Mx.touch_distance / cur_distance)) * 0.05;
var xran = Mx.stk[k].xmax - Mx.stk[k].xmin;
var yran = Mx.stk[k].ymax - Mx.stk[k].ymin;
var xmin = Mx.stk[k].xmin + (scaling * xran);
var xmax = Mx.stk[k].xmax - (scaling * xran);
var ymin = Mx.stk[k].ymin + (scaling * yran);
var ymax = Mx.stk[k].ymax - (scaling * yran);
Mx.stk[k].xmin = Math.max(Gx.xmin, xmin);
Mx.stk[k].xmax = Math.min(Gx.xmax, xmax);
Mx.stk[k].ymin = Math.max(Gx.ymin, ymin);
Mx.stk[k].ymax = Math.min(Gx.ymax, ymax);
plot.refresh();
}
};
}(this));
this.throttledOnTouchMove = m.throttle(
this._Gx.scroll_time_interval,
this.ontouchmove);
mx.addEventListener(Mx, "touchmove", this.throttledOnTouchMove, false);
this.ontouchend = (function(plot) {
return function(event) {
var Gx = plot._Gx;
var Mx = plot._Mx;
event.preventDefault();
console.log("on touch end ", event.targetTouches.length);
Gx.panning = undefined;
plot._Mx.scrollbar_x.action = 0;
plot._Mx.scrollbar_y.action = 0;
Mx.touch_distance = undefined;
mx.widget_callback(Mx, event);
// Only clear the touches after a slight delay so we can
// detect double-tap
Mx.touchClear = window.setTimeout(
function() {
Mx.touches = undefined;
Mx.touchClear = undefined;
}, 100);
};
}(this));
mx.addEventListener(Mx, "touchend", this.ontouchend, false);
this.docMouseUp = (function(plot) {
return function(event) {
var Gx = plot._Gx;
if (event.which === 1) {
// in general, you shouldn't put anything in here
// ...instead it should go into rubberbox_cb
Gx.panning = undefined;
plot._Mx.scrollbar_x.action = 0; // TODO Is this
// necessary?
plot._Mx.scrollbar_y.action = 0;
} //else if (event.which === 2) {
// nothing
//} else if (event.which === 3) {
// nothing
//}
if (Gx.stillPanning) {
window.clearTimeout(Gx.stillPanning);
Gx.stillPanning = undefined;
}
if (Gx.repeatPanning) { // Clear the panning interval on any
// mouse up in the document
window.clearInterval(Gx.repeatPanning);
Gx.repeatPanning = undefined;
}
return false;
};
}(this));
document.addEventListener("mouseup", this.docMouseUp, false);
this.mouseup = (function(plot) {
return function(event) {
event.preventDefault(); // mouse up on the canvas should never do a browser default action
var Gx = plot._Gx;
var Mx = plot._Mx;
// Update Mx event fields
mx.ifevent(plot._Mx, event);
var evt = document.createEvent('Event');
evt.initEvent('mup', true, true);
evt.originalEvent = event;
evt.xpos = Mx.xpos;
evt.ypos = Mx.ypos;
evt.x = Gx.retx;
evt.y = Gx.rety;
evt.which = event.which;
var executeDefault = mx.dispatchEvent(Mx, evt);
if (executeDefault) {
if (Mx.warpbox || Mx.widget || Mx.prompt) {
// If any of these are true, the mouseup is going
// to be handled by them...but this is a fragile approach
// because it relies upon implicit ordering of event dispatch
// for mouseup events. It should be improved/refactored at some point
return;
}
// Normal mouse up handling
if (event.which === 1) {
// If we are in the pan region, perform the pan
// otherwise emit an mtag
var inCenter = inPanCenterRegion(plot);
if (inCenter.inCenterRegion) {
if (inCenter.command !== ' ') {
pan(plot, inCenter.command, 0, event); // pan
}
} else if (Gx.cntrls === 1) {
// Update the mark
Gx.xmrk = Gx.retx;
Gx.ymrk = Gx.rety;
var mtagevt = document.createEvent('Event');
mtagevt.initEvent('mtag', true, true);
mtagevt.originalEvent = event;
mtagevt.x = Gx.xmrk;
mtagevt.y = Gx.ymrk;
mtagevt.xpos = event.x || event.clientX;
mtagevt.ypos = event.y || event.clientY;
mtagevt.w = undefined;
mtagevt.h = undefined;
mtagevt.shift = event.shiftKey;
mx.dispatchEvent(Mx, mtagevt);
// Refresh to draw the new marker position
//if (Gx.always_show_marker || Gx.show_marker) {
plot.redraw();
//}
}
} else if (event.which === 2) {
if (Gx.nomenu) {
// Send an event so that a custom menu can be displayed
// if desired
var evt = document.createEvent('Event');
evt.initEvent('showmenu', true, true);
evt.originalEvent = event;
evt.x = event.x || event.clientX;
evt.y = event.y || event.clientY;
var executeDefault = mx.dispatchEvent(Mx, evt);
if (executeDefault) {
if (event.stopPropagation) {
event.stopPropagation();
}
event.cancelBubble = true;
mx.removeEventListener(Mx, "mousedown", plot.onmousedown, false);
var emit_hidemenu = function() {