Fix context menu, text visibility for small images (#202)
* Fixed: both context menu are opened simultaneously * Fixed: shape can be unavailable behind text * Fixed: invisible text outside framemain
Boris Sekachev
7 years ago
committed by
Nikita Manovich
parent
ce06c957df
commit
d4ce6216d6
@ -0,0 +1,106 @@
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/*
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* Copyright (C) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*/
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/* exported CoordinateTranslator */
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"use strict";
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class CoordinateTranslator {
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constructor() {
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this._boxTranslator = {
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_playerOffset: 0,
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_convert: function(box, sign) {
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for (let prop of ["xtl", "ytl", "xbr", "ybr", "x", "y"]) {
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if (prop in box) {
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box[prop] += this._playerOffset * sign;
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}
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}
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return box;
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},
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actualToCanvas: function(actualBox) {
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let canvasBox = {};
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for (let key in actualBox) {
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canvasBox[key] = actualBox[key];
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}
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return this._convert(canvasBox, 1);
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},
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canvasToActual: function(canvasBox) {
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let actualBox = {};
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for (let key in canvasBox) {
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actualBox[key] = canvasBox[key];
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}
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return this._convert(actualBox, -1);
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},
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};
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this._pointsTranslator = {
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_playerOffset: 0,
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_convert: function(points, sign) {
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if (typeof(points) === 'string') {
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return points.split(' ').map((coord) => coord.split(',')
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.map((x) => +x + this._playerOffset * sign).join(',')).join(' ');
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}
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else if (typeof(points) === 'object') {
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let result = [];
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for (let point of points) {
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result.push({
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x: point.x + this._playerOffset * sign,
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y: point.y + this._playerOffset * sign,
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});
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}
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return result;
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}
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else {
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throw Error('Unknown points type was found');
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}
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},
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actualToCanvas: function(actualPoints) {
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return this._convert(actualPoints, 1);
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},
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canvasToActual: function(canvasPoints) {
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return this._convert(canvasPoints, -1);
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}
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},
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this._pointTranslator = {
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clientToCanvas: function(targetCanvas, clientX, clientY) {
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let pt = targetCanvas.createSVGPoint();
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pt.x = clientX;
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pt.y = clientY;
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pt = pt.matrixTransform(targetCanvas.getScreenCTM().inverse());
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return pt;
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},
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canvasToClient: function(sourceCanvas, canvasX, canvasY) {
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let pt = sourceCanvas.createSVGPoint();
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pt.x = canvasX;
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pt.y = canvasY;
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pt = pt.matrixTransform(sourceCanvas.getScreenCTM());
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return pt;
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}
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};
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}
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get box() {
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return this._boxTranslator;
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}
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get points() {
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return this._pointsTranslator;
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}
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get point() {
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return this._pointTranslator;
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}
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set playerOffset(value) {
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this._boxTranslator._playerOffset = value;
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this._pointsTranslator._playerOffset = value;
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}
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}
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