jsroot
Version:
JavaScript ROOT
985 lines (811 loc) • 33 kB
JavaScript
import { settings, create, parse, toJSON, loadScript, registerMethods, isBatchMode, isFunc, isStr, nsREX } from '../core.mjs';
import { select as d3_select, rgb as d3_rgb } from '../d3.mjs';
import { closeCurrentWindow, showProgress, loadOpenui5, ToolbarIcons, getColorExec } from '../gui/utils.mjs';
import { GridDisplay, getHPainter } from '../gui/display.mjs';
import { makeTranslate } from '../base/BasePainter.mjs';
import { convertColor } from '../base/colors.mjs';
import { selectActivePad, cleanup, resize, EAxisBits } from '../base/ObjectPainter.mjs';
import { RObjectPainter } from '../base/RObjectPainter.mjs';
import { RAxisPainter } from './RAxisPainter.mjs';
import { RFramePainter } from './RFramePainter.mjs';
import { RPadPainter } from './RPadPainter.mjs';
import { addDragHandler } from './TFramePainter.mjs';
/**
* @summary Painter class for RCanvas
*
* @private
*/
class RCanvasPainter extends RPadPainter {
/** @summary constructor */
constructor(dom, canvas) {
super(dom, canvas, true);
this._websocket = null;
this.tooltip_allowed = settings.Tooltip;
this.v7canvas = true;
}
/** @summary Cleanup canvas painter */
cleanup() {
delete this._websocket;
delete this._submreq;
if (this._changed_layout)
this.setLayoutKind('simple');
delete this._changed_layout;
super.cleanup();
}
/** @summary Returns canvas name */
getCanvasName() {
const title = this.pad?.fTitle;
return (!title || !isStr(title)) ? 'rcanvas' : title.replace(/ /g, '_');
}
/** @summary Returns layout kind */
getLayoutKind() {
const origin = this.selectDom('origin'),
layout = origin.empty() ? '' : origin.property('layout');
return layout || 'simple';
}
/** @summary Set canvas layout kind */
setLayoutKind(kind, main_selector) {
const origin = this.selectDom('origin');
if (!origin.empty()) {
if (!kind) kind = 'simple';
origin.property('layout', kind);
origin.property('layout_selector', (kind !== 'simple') && main_selector ? main_selector : null);
this._changed_layout = (kind !== 'simple'); // use in cleanup
}
}
/** @summary Changes layout
* @return {Promise} indicating when finished */
async changeLayout(layout_kind, mainid) {
const current = this.getLayoutKind();
if (current === layout_kind)
return true;
const origin = this.selectDom('origin'),
sidebar2 = origin.select('.side_panel2'),
lst = [];
let sidebar = origin.select('.side_panel'),
main = this.selectDom(), force;
while (main.node().firstChild)
lst.push(main.node().removeChild(main.node().firstChild));
if (!sidebar.empty())
cleanup(sidebar.node());
if (!sidebar2.empty())
cleanup(sidebar2.node());
this.setLayoutKind('simple'); // restore defaults
origin.html(''); // cleanup origin
if (layout_kind === 'simple') {
main = origin;
for (let k = 0; k < lst.length; ++k)
main.node().appendChild(lst[k]);
this.setLayoutKind(layout_kind);
force = true;
} else {
const grid = new GridDisplay(origin.node(), layout_kind);
if (mainid === undefined)
mainid = (layout_kind.indexOf('vert') === 0) ? 0 : 1;
main = d3_select(grid.getGridFrame(mainid));
main.classed('central_panel', true).style('position', 'relative');
if (mainid === 2) {
// left panel for Y
sidebar = d3_select(grid.getGridFrame(0));
sidebar.classed('side_panel2', true).style('position', 'relative');
// bottom panel for X
sidebar = d3_select(grid.getGridFrame(3));
sidebar.classed('side_panel', true).style('position', 'relative');
} else {
sidebar = d3_select(grid.getGridFrame(1 - mainid));
sidebar.classed('side_panel', true).style('position', 'relative');
}
// now append all childs to the new main
for (let k = 0; k < lst.length; ++k)
main.node().appendChild(lst[k]);
this.setLayoutKind(layout_kind, '.central_panel');
// remove reference to MDIDisplay, solves resize problem
origin.property('mdi', null);
}
// resize main drawing and let draw extras
resize(main.node(), force);
return true;
}
/** @summary Toggle projection
* @return {Promise} indicating when ready
* @private */
async toggleProjection(kind) {
delete this.proj_painter;
if (kind) this.proj_painter = { X: false, Y: false }; // just indicator that drawing can be preformed
if (isFunc(this.showUI5ProjectionArea))
return this.showUI5ProjectionArea(kind);
let layout = 'simple', mainid;
switch (kind) {
case 'XY': layout = 'projxy'; mainid = 2; break;
case 'X':
case 'bottom': layout = 'vert2_31'; mainid = 0; break;
case 'Y':
case 'left': layout = 'horiz2_13'; mainid = 1; break;
case 'top': layout = 'vert2_13'; mainid = 1; break;
case 'right': layout = 'horiz2_31'; mainid = 0; break;
}
return this.changeLayout(layout, mainid);
}
/** @summary Draw projection for specified histogram
* @private */
async drawProjection(/* kind, hist, hopt */) {
// dummy for the moment
return false;
}
/** @summary Draw in side panel
* @private */
async drawInSidePanel(canv, opt, kind) {
const sel = ((this.getLayoutKind() === 'projxy') && (kind === 'Y')) ? '.side_panel2' : '.side_panel',
side = this.selectDom('origin').select(sel);
return side.empty() ? null : this.drawObject(side.node(), canv, opt);
}
/** @summary Checks if canvas shown inside ui5 widget
* @desc Function should be used only from the func which supposed to be replaced by ui5
* @private */
testUI5() {
return this.use_openui ?? false;
}
/** @summary Show message
* @desc Used normally with web-based canvas and handled in ui5
* @private */
showMessage(msg) {
if (!this.testUI5())
showProgress(msg, 7000);
}
/** @summary Function called when canvas menu item Save is called */
saveCanvasAsFile(fname) {
const pnt = fname.indexOf('.');
this.createImage(fname.slice(pnt+1))
.then(res => this.sendWebsocket(`SAVE:${fname}:${res}`));
}
/** @summary Send command to server to save canvas with specified name
* @desc Should be only used in web-based canvas
* @private */
sendSaveCommand(fname) {
this.sendWebsocket('PRODUCE:' + fname);
}
/** @summary Return true if message can be send via web socket
* @private */
canSendWebSocket() { return this._websocket?.canSend(); }
/** @summary Send message via web socket
* @private */
sendWebsocket(msg) {
if (this._websocket?.canSend()) {
this._websocket.send(msg);
return true;
}
return false;
}
/** @summary Close websocket connection to canvas
* @private */
closeWebsocket(force) {
if (this._websocket) {
this._websocket.close(force);
this._websocket.cleanup();
delete this._websocket;
}
}
/** @summary Use provided connection for the web canvas
* @private */
useWebsocket(handle) {
this.closeWebsocket();
this._websocket = handle;
this._websocket.setReceiver(this);
this._websocket.connect();
}
/** @summary set, test or reset timeout of specified name
* @desc Used to prevent overloading of websocket for specific function */
websocketTimeout(name, tm) {
if (!this._websocket)
return;
if (!this._websocket._tmouts)
this._websocket._tmouts = {};
const handle = this._websocket._tmouts[name];
if (tm === undefined)
return handle !== undefined;
if (tm === 'reset') {
if (handle) { clearTimeout(handle); delete this._websocket._tmouts[name]; }
} else if (!handle && Number.isInteger(tm))
this._websocket._tmouts[name] = setTimeout(() => { delete this._websocket._tmouts[name]; }, tm);
}
/** @summary Handler for websocket open event
* @private */
onWebsocketOpened(/* handle */) {
}
/** @summary Handler for websocket close event
* @private */
onWebsocketClosed(/* handle */) {
if (!this.embed_canvas)
closeCurrentWindow();
}
/** @summary Handler for websocket message
* @private */
onWebsocketMsg(handle, msg) {
// console.log('GET_MSG ' + msg.slice(0,30));
if (msg === 'CLOSE') {
this.onWebsocketClosed();
this.closeWebsocket(true);
} else if (msg.slice(0, 5) === 'SNAP:') {
msg = msg.slice(5);
const p1 = msg.indexOf(':'),
snapid = msg.slice(0, p1),
snap = parse(msg.slice(p1+1));
this.syncDraw(true)
.then(() => {
if (!this.snapid && snap?.fWinSize)
this.resizeBrowser(snap.fWinSize[0], snap.fWinSize[1]);
}).then(() => this.redrawPadSnap(snap))
.then(() => {
this.addPadInteractive();
handle.send(`SNAPDONE:${snapid}`); // send ready message back when drawing completed
this.confirmDraw();
}).catch(err => {
if (isFunc(this.showConsoleError))
this.showConsoleError(err);
else
console.log(err);
});
} else if (msg.slice(0, 4) === 'JSON') {
const obj = parse(msg.slice(4));
this.redrawObject(obj);
} else if (msg.slice(0, 9) === 'REPL_REQ:')
this.processDrawableReply(msg.slice(9));
else if (msg.slice(0, 4) === 'CMD:') {
msg = msg.slice(4);
const p1 = msg.indexOf(':'),
cmdid = msg.slice(0, p1),
cmd = msg.slice(p1+1),
reply = `REPLY:${cmdid}:`;
if ((cmd === 'SVG') || (cmd === 'PNG') || (cmd === 'JPEG') || (cmd === 'WEBP') || (cmd === 'PDF')) {
this.createImage(cmd.toLowerCase())
.then(res => handle.send(reply + res));
} else if (cmd.indexOf('ADDPANEL:') === 0) {
if (!isFunc(this.showUI5Panel))
handle.send(reply + 'false');
else {
const window_path = cmd.slice(9),
conn = handle.createNewInstance(window_path);
// set interim receiver until first message arrives
conn.setReceiver({
cpainter: this,
onWebsocketOpened() {
},
onWebsocketMsg(panel_handle, msg2) {
const panel_name = (msg2.indexOf('SHOWPANEL:') === 0) ? msg2.slice(10) : '';
this.cpainter.showUI5Panel(panel_name, panel_handle)
.then(res => handle.send(reply + (res ? 'true' : 'false')));
},
onWebsocketClosed() {
// if connection failed,
handle.send(reply + 'false');
},
onWebsocketError() {
// if connection failed,
handle.send(reply + 'false');
}
});
// only when connection established, panel will be activated
conn.connect();
}
} else {
console.log('Unrecognized command ' + cmd);
handle.send(reply);
}
} else if ((msg.slice(0, 7) === 'DXPROJ:') || (msg.slice(0, 7) === 'DYPROJ:')) {
const kind = msg[1],
hist = parse(msg.slice(7));
this.drawProjection(kind, hist);
} else if (msg.slice(0, 5) === 'SHOW:') {
const that = msg.slice(5),
on = that.at(-1) === '1';
this.showSection(that.slice(0, that.length - 2), on);
} else
console.log(`unrecognized msg len: ${msg.length} msg: ${msg.slice(0, 30)}`);
}
/** @summary Submit request to RDrawable object on server side */
submitDrawableRequest(kind, req, painter, method) {
if (!this._websocket || !req || !req._typename ||
!painter.snapid || !isStr(painter.snapid)) return null;
if (kind && method) {
// if kind specified - check if such request already was submitted
if (!painter._requests) painter._requests = {};
const prevreq = painter._requests[kind];
if (prevreq) {
const tm = new Date().getTime();
if (!prevreq._tm || (tm - prevreq._tm < 5000)) {
prevreq._nextreq = req; // submit when got reply
return false;
}
delete painter._requests[kind]; // let submit new request after timeout
}
painter._requests[kind] = req; // keep reference on the request
}
req.id = painter.snapid;
if (method) {
if (!this._nextreqid) this._nextreqid = 1;
req.reqid = this._nextreqid++;
} else
req.reqid = 0; // request will not be replied
const msg = JSON.stringify(req);
if (req.reqid) {
req._kind = kind;
req._painter = painter;
req._method = method;
req._tm = new Date().getTime();
if (!this._submreq) this._submreq = {};
this._submreq[req.reqid] = req; // fast access to submitted requests
}
this.sendWebsocket('REQ:' + msg);
return req;
}
/** @summary Submit menu request
* @private */
async submitMenuRequest(painter, menukind, reqid) {
return new Promise(resolveFunc => {
this.submitDrawableRequest('', {
_typename: `${nsREX}RDrawableMenuRequest`,
menukind: menukind || '',
menureqid: reqid // used to identify menu request
}, painter, resolveFunc);
});
}
/** @summary Submit executable command for given painter */
submitExec(painter, exec, subelem) {
// snapid is intentionally ignored - only painter.snapid has to be used
if (!this._websocket) return;
if (subelem && isStr(subelem)) {
const len = subelem.length;
if ((len > 2) && (subelem.indexOf('#x') === len - 2)) subelem = 'x'; else
if ((len > 2) && (subelem.indexOf('#y') === len - 2)) subelem = 'y'; else
if ((len > 2) && (subelem.indexOf('#z') === len - 2)) subelem = 'z';
if ((subelem === 'x') || (subelem === 'y') || (subelem === 'z'))
exec = subelem + 'axis#' + exec;
else
return console.log(`not recoginzed subelem ${subelem} in SubmitExec`);
}
this.submitDrawableRequest('', { _typename: `${nsREX}RDrawableExecRequest`, exec }, painter);
}
/** @summary Process reply from request to RDrawable */
processDrawableReply(msg) {
const reply = parse(msg);
if (!reply || !reply.reqid || !this._submreq) return false;
const req = this._submreq[reply.reqid];
if (!req) return false;
// remove reference first
delete this._submreq[reply.reqid];
// remove blocking reference for that kind
if (req._kind && req._painter?._requests) {
if (req._painter._requests[req._kind] === req)
delete req._painter._requests[req._kind];
}
if (req._method)
req._method(reply, req);
// resubmit last request of that kind
if (req._nextreq && !req._painter._requests[req._kind])
this.submitDrawableRequest(req._kind, req._nextreq, req._painter, req._method);
}
/** @summary Show specified section in canvas */
async showSection(that, on) {
switch (that) {
case 'Menu': break;
case 'StatusBar': break;
case 'Editor': break;
case 'ToolBar': break;
case 'ToolTips': this.setTooltipAllowed(on); break;
}
return true;
}
/** @summary Method informs that something was changed in the canvas
* @desc used to update information on the server (when used with web6gui)
* @private */
processChanges(kind, painter, subelem) {
// check if we could send at least one message more - for some meaningful actions
if (!this._websocket || !this._websocket.canSend(2) || !isStr(kind)) return;
const msg = '';
if (!painter) painter = this;
switch (kind) {
case 'sbits':
console.log('Status bits in RCanvas are changed - that to do?');
break;
case 'frame': // when moving frame
case 'zoom': // when changing zoom inside frame
console.log('Frame moved or zoom is changed - that to do?');
break;
case 'pave_moved':
console.log('TPave is moved inside RCanvas - that to do?');
break;
default:
if ((kind.slice(0, 5) === 'exec:') && painter?.snapid)
this.submitExec(painter, kind.slice(5), subelem);
else
console.log('UNPROCESSED CHANGES', kind);
}
if (msg)
console.log('RCanvas::processChanges want to send ' + msg.length + ' ' + msg.slice(0, 40));
}
/** @summary Handle pad button click event
* @private */
clickPadButton(funcname, evnt) {
if (funcname === 'ToggleGed')
return this.activateGed(this, null, 'toggle');
if (funcname === 'ToggleStatus')
return this.activateStatusBar('toggle');
return super.clickPadButton(funcname, evnt);
}
/** @summary returns true when event status area exist for the canvas */
hasEventStatus() {
if (this.testUI5()) return false;
if (this.brlayout)
return this.brlayout.hasStatus();
const hp = getHPainter();
return hp ? hp.hasStatusLine() : false;
}
/** @summary Check if status bar can be toggled
* @private */
canStatusBar() {
return this.testUI5() || this.brlayout || getHPainter();
}
/** @summary Show/toggle event status bar
* @private */
activateStatusBar(state) {
if (this.testUI5())
return;
if (this.brlayout)
this.brlayout.createStatusLine(23, state);
else
getHPainter()?.createStatusLine(23, state);
this.processChanges('sbits', this);
}
/** @summary Show online canvas status
* @private */
showCanvasStatus(...msgs) {
if (this.testUI5()) return;
const br = this.brlayout || getHPainter()?.brlayout;
br?.showStatus(...msgs);
}
/** @summary Returns true if GED is present on the canvas */
hasGed() {
if (this.testUI5()) return false;
return this.brlayout?.hasContent() ?? false;
}
/** @summary Function used to de-activate GED
* @private */
removeGed() {
if (this.testUI5()) return;
this.registerForPadEvents(null);
if (this.ged_view) {
this.ged_view.getController().cleanupGed();
this.ged_view.destroy();
delete this.ged_view;
}
this.brlayout?.deleteContent(true);
this.processChanges('sbits', this);
}
/** @summary Get view data for ui5 panel
* @private */
getUi5PanelData(/* panel_name */) {
return { jsroot: { settings, create, parse, toJSON, loadScript, EAxisBits, getColorExec } };
}
/** @summary Function used to activate GED
* @return {Promise} when GED is there
* @private */
async activateGed(objpainter, kind, mode) {
if (this.testUI5() || !this.brlayout)
return false;
if (this.brlayout.hasContent()) {
if ((mode === 'toggle') || (mode === false))
this.removeGed();
else
objpainter?.getPadPainter()?.selectObjectPainter(objpainter);
return true;
}
if (mode === false)
return false;
const btns = this.brlayout.createBrowserBtns();
ToolbarIcons.createSVG(btns, ToolbarIcons.diamand, 15, 'toggle fix-pos mode', 'browser')
.style('margin', '3px').on('click', () => this.brlayout.toggleKind('fix'));
ToolbarIcons.createSVG(btns, ToolbarIcons.circle, 15, 'toggle float mode', 'browser')
.style('margin', '3px').on('click', () => this.brlayout.toggleKind('float'));
ToolbarIcons.createSVG(btns, ToolbarIcons.cross, 15, 'delete GED', 'browser')
.style('margin', '3px').on('click', () => this.removeGed());
// be aware, that jsroot_browser_hierarchy required for flexible layout that element use full browser area
this.brlayout.setBrowserContent('<div class=\'jsroot_browser_hierarchy\' id=\'ged_placeholder\'>Loading GED ...</div>');
this.brlayout.setBrowserTitle('GED');
this.brlayout.toggleBrowserKind(kind || 'float');
return new Promise(resolveFunc => {
loadOpenui5.then(sap => {
d3_select('#ged_placeholder').text('');
sap.ui.require(['sap/ui/model/json/JSONModel', 'sap/ui/core/mvc/XMLView'], (JSONModel, XMLView) => {
const oModel = new JSONModel({ handle: null });
XMLView.create({
viewName: 'rootui5.canv.view.Ged',
viewData: this.getUi5PanelData('Ged')
}).then(oGed => {
oGed.setModel(oModel);
oGed.placeAt('ged_placeholder');
this.ged_view = oGed;
// TODO: should be moved into Ged controller - it must be able to detect canvas painter itself
this.registerForPadEvents(oGed.getController().padEventsReceiver.bind(oGed.getController()));
objpainter?.getPadPainter()?.selectObjectPainter(objpainter);
this.processChanges('sbits', this);
resolveFunc(true);
});
});
});
});
}
/** @summary produce JSON for RCanvas, which can be used to display canvas once again
* @private */
produceJSON() {
console.error('RCanvasPainter.produceJSON not yet implemented');
return '';
}
/** @summary resize browser window to get requested canvas sizes */
resizeBrowser(fullW, fullH) {
if (!fullW || !fullH || this.isBatchMode() || this.embed_canvas || this.batch_mode)
return;
this._websocket?.resizeWindow(fullW, fullH);
}
/** @summary draw RCanvas object */
static async draw(dom, can /* , opt */) {
const nocanvas = !can;
if (nocanvas)
can = create(`${nsREX}RCanvas`);
const painter = new RCanvasPainter(dom, can);
painter.normal_canvas = !nocanvas;
painter.createCanvasSvg(0);
selectActivePad({ pp: painter, active: false });
return painter.drawPrimitives().then(() => {
painter.addPadInteractive();
painter.addPadButtons();
painter.showPadButtons();
return painter;
});
}
} // class RCanvasPainter
/** @summary draw RPadSnapshot object
* @private */
function drawRPadSnapshot(dom, snap /* , opt */) {
const painter = new RCanvasPainter(dom, null);
painter.normal_canvas = false;
painter.batch_mode = isBatchMode();
return painter.syncDraw(true).then(() => painter.redrawPadSnap(snap)).then(() => {
painter.confirmDraw();
painter.showPadButtons();
return painter;
});
}
/** @summary Ensure RCanvas and RFrame for the painter object
* @param {Object} painter - painter object to process
* @param {string|boolean} frame_kind - false for no frame or '3d' for special 3D mode
* @desc Assigns DOM, creates and draw RCanvas and RFrame if necessary, add painter to pad list of painters
* @return {Promise} for ready
* @private */
async function ensureRCanvas(painter, frame_kind) {
if (!painter)
return Promise.reject(Error('Painter not provided in ensureRCanvas'));
// simple check - if canvas there, can use painter
const pr = painter.getCanvSvg().empty() ? RCanvasPainter.draw(painter.getDom(), null /* noframe */) : Promise.resolve(true);
return pr.then(() => {
if ((frame_kind !== false) && painter.getFrameSvg().selectChild('.main_layer').empty())
return RFramePainter.draw(painter.getDom(), null, isStr(frame_kind) ? frame_kind : '');
}).then(() => {
painter.addToPadPrimitives();
return painter;
});
}
/** @summary Function used for direct draw of RFrameTitle
* @private */
function drawRFrameTitle(reason, drag) {
const fp = this.getFramePainter();
if (!fp)
return console.log('no frame painter - no title');
const rect = fp.getFrameRect(),
fx = rect.x,
fy = rect.y,
fw = rect.width,
// fh = rect.height,
ph = this.getPadPainter().getPadHeight(),
title = this.getObject(),
title_width = fw,
textFont = this.v7EvalFont('text', { size: 0.07, color: 'black', align: 22 });
let title_margin = this.v7EvalLength('margin', ph, 0.02),
title_height = this.v7EvalLength('height', ph, 0.05);
if (reason === 'drag') {
title_height = drag.height;
title_margin = fy - drag.y - drag.height;
const changes = {};
this.v7AttrChange(changes, 'margin', title_margin / ph);
this.v7AttrChange(changes, 'height', title_height / ph);
this.v7SendAttrChanges(changes, false); // do not invoke canvas update on the server
}
this.createG();
makeTranslate(this.draw_g, fx, Math.round(fy-title_margin-title_height));
return this.startTextDrawingAsync(textFont, 'font').then(() => {
this.drawText({ x: title_width/2, y: title_height/2, text: title.fText, latex: 1 });
return this.finishTextDrawing();
}).then(() => {
addDragHandler(this, { x: fx, y: Math.round(fy-title_margin-title_height), width: title_width, height: title_height,
minwidth: 20, minheight: 20, no_change_x: true, redraw: d => this.redraw('drag', d) });
});
}
// ==========================================================
registerMethods(`${nsREX}RPalette`, {
extractRColor(rcolor) {
const col = rcolor.fColor || 'black';
return convertColor(col);
},
getColor(indx) {
return this.palette[indx];
},
getContourIndex(zc) {
const cntr = this.fContour;
let l = 0, r = cntr.length - 1;
if (zc < cntr[0])
return -1;
if (zc >= cntr[r])
return r-1;
if (this.fCustomContour) {
while (l < r-1) {
const mid = Math.round((l+r)/2);
if (cntr[mid] > zc)
r = mid;
else
l = mid;
}
return l;
}
// last color in palette starts from level cntr[r-1]
return Math.floor((zc-cntr[0]) / (cntr[r-1] - cntr[0]) * (r-1));
},
getContourColor(zc) {
const zindx = this.getContourIndex(zc);
return (zindx < 0) ? '' : this.getColor(zindx);
},
getContour() {
return this.fContour && (this.fContour.length > 1) ? this.fContour : null;
},
deleteContour() {
delete this.fContour;
},
calcColor(value, entry1, entry2) {
const dist = entry2.fOrdinal - entry1.fOrdinal,
r1 = entry2.fOrdinal - value,
r2 = value - entry1.fOrdinal;
if (!this.fInterpolate || (dist <= 0))
return convertColor((r1 < r2) ? entry2.fColor : entry1.fColor);
// interpolate
const col1 = d3_rgb(this.extractRColor(entry1.fColor)),
col2 = d3_rgb(this.extractRColor(entry2.fColor)),
color = d3_rgb(Math.round((col1.r*r1 + col2.r*r2)/dist),
Math.round((col1.g*r1 + col2.g*r2)/dist),
Math.round((col1.b*r1 + col2.b*r2)/dist));
return color.formatRgb();
},
createPaletteColors(len) {
const arr = [];
let indx = 0;
while (arr.length < len) {
const value = arr.length / (len-1),
entry = this.fColors[indx];
if ((Math.abs(entry.fOrdinal - value) < 0.0001) || (indx === this.fColors.length - 1)) {
arr.push(this.extractRColor(entry.fColor));
continue;
}
const next = this.fColors[indx+1];
if (next.fOrdinal <= value)
indx++;
else
arr.push(this.calcColor(value, entry, next));
}
return arr;
},
getColorOrdinal(value) {
// extract color with ordinal value between 0 and 1
if (!this.fColors)
return 'black';
if ((typeof value !== 'number') || (value < 0))
value = 0;
else if (value > 1)
value = 1;
// TODO: implement better way to find index
let entry, next = this.fColors[0];
for (let indx = 0; indx < this.fColors.length - 1; ++indx) {
entry = next;
if (Math.abs(entry.fOrdinal - value) < 0.0001)
return this.extractRColor(entry.fColor);
next = this.fColors[indx+1];
if (next.fOrdinal > value)
return this.calcColor(value, entry, next);
}
return this.extractRColor(next.fColor);
},
setFullRange(min, max) {
// set full z scale range, used in zooming
this.full_min = min;
this.full_max = max;
},
createContour(logz, nlevels, zmin, zmax, zminpositive) {
this.fContour = [];
delete this.fCustomContour;
this.colzmin = zmin;
this.colzmax = zmax;
if (logz) {
if (this.colzmax <= 0) this.colzmax = 1.0;
if (this.colzmin <= 0) {
if ((zminpositive === undefined) || (zminpositive <= 0))
this.colzmin = 0.0001*this.colzmax;
else
this.colzmin = ((zminpositive < 3) || (zminpositive>100)) ? 0.3*zminpositive : 1;
}
if (this.colzmin >= this.colzmax)
this.colzmin = 0.0001*this.colzmax;
const logmin = Math.log(this.colzmin)/Math.log(10),
logmax = Math.log(this.colzmax)/Math.log(10),
dz = (logmax-logmin)/nlevels;
this.fContour.push(this.colzmin);
for (let level=1; level<nlevels; level++)
this.fContour.push(Math.exp((logmin + dz*level)*Math.log(10)));
this.fContour.push(this.colzmax);
this.fCustomContour = true;
} else {
if ((this.colzmin === this.colzmax) && (this.colzmin !== 0)) {
this.colzmax += 0.01*Math.abs(this.colzmax);
this.colzmin -= 0.01*Math.abs(this.colzmin);
}
const dz = (this.colzmax-this.colzmin)/nlevels;
for (let level=0; level<=nlevels; level++)
this.fContour.push(this.colzmin + dz*level);
}
if (!this.palette || (this.palette.length !== nlevels))
this.palette = this.createPaletteColors(nlevels);
}
});
/** @summary draw RFont object
* @private */
function drawRFont() {
const font = this.getObject(),
svg = this.getCanvSvg(),
clname = 'custom_font_' + font.fFamily+font.fWeight+font.fStyle;
let defs = svg.selectChild('.canvas_defs');
if (defs.empty())
defs = svg.insert('svg:defs', ':first-child').attr('class', 'canvas_defs');
let entry = defs.selectChild('.' + clname);
if (entry.empty()) {
entry = defs.append('style')
.attr('type', 'text/css')
.attr('class', clname)
.text(`-face { font-family: "${font.fFamily}"; font-weight: ${font.fWeight ? font.fWeight : 'normal'}; font-style: ${font.fStyle ? font.fStyle : 'normal'}; src: ${font.fSrc}; }`);
const p1 = font.fSrc.indexOf('base64,'),
p2 = font.fSrc.lastIndexOf(' format(');
if (p1 > 0 && p2 > p1) {
const base64 = font.fSrc.slice(p1 + 7, p2 - 2),
is_ttf = font.fSrc.indexOf('data:application/font-ttf') > 0;
// TODO: for the moment only ttf format supported by jsPDF
if (is_ttf)
entry.property('$fontcfg', { n: font.fFamily, base64 });
}
}
if (font.fDefault)
this.getPadPainter()._dfltRFont = font;
return true;
}
/** @summary draw RAxis object
* @private */
function drawRAxis(dom, obj, opt) {
const painter = new RAxisPainter(dom, obj, opt);
painter.disable_zooming = true;
return ensureRCanvas(painter, false)
.then(() => painter.redraw())
.then(() => painter);
}
/** @summary draw RFrame object
* @private */
function drawRFrame(dom, obj, opt) {
const p = new RFramePainter(dom, obj);
if (opt === '3d') p.mode3d = true;
return ensureRCanvas(p, false).then(() => p.redraw());
}
export { ensureRCanvas, drawRPadSnapshot,
drawRFrameTitle, drawRFont, drawRAxis, drawRFrame,
RObjectPainter, RPadPainter, RCanvasPainter };