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103
node_modules/node-blockly/blockly/generators/javascript/colour.js
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103
node_modules/node-blockly/blockly/generators/javascript/colour.js
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/**
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* @license
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* Visual Blocks Language
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*
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* Copyright 2012 Google Inc.
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* https://developers.google.com/blockly/
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Generating JavaScript for colour blocks.
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* @author fraser@google.com (Neil Fraser)
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*/
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'use strict';
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goog.provide('Blockly.JavaScript.colour');
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goog.require('Blockly.JavaScript');
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Blockly.JavaScript['colour_picker'] = function(block) {
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// Colour picker.
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var code = '\'' + block.getFieldValue('COLOUR') + '\'';
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return [code, Blockly.JavaScript.ORDER_ATOMIC];
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};
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Blockly.JavaScript['colour_random'] = function(block) {
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// Generate a random colour.
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var functionName = Blockly.JavaScript.provideFunction_(
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'colourRandom',
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['function ' + Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_ + '() {',
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' var num = Math.floor(Math.random() * Math.pow(2, 24));',
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' return \'#\' + (\'00000\' + num.toString(16)).substr(-6);',
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'}']);
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var code = functionName + '()';
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return [code, Blockly.JavaScript.ORDER_FUNCTION_CALL];
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};
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Blockly.JavaScript['colour_rgb'] = function(block) {
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// Compose a colour from RGB components expressed as percentages.
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var red = Blockly.JavaScript.valueToCode(block, 'RED',
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Blockly.JavaScript.ORDER_COMMA) || 0;
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var green = Blockly.JavaScript.valueToCode(block, 'GREEN',
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Blockly.JavaScript.ORDER_COMMA) || 0;
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var blue = Blockly.JavaScript.valueToCode(block, 'BLUE',
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Blockly.JavaScript.ORDER_COMMA) || 0;
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var functionName = Blockly.JavaScript.provideFunction_(
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'colourRgb',
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['function ' + Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_ +
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'(r, g, b) {',
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' r = Math.max(Math.min(Number(r), 100), 0) * 2.55;',
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' g = Math.max(Math.min(Number(g), 100), 0) * 2.55;',
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' b = Math.max(Math.min(Number(b), 100), 0) * 2.55;',
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' r = (\'0\' + (Math.round(r) || 0).toString(16)).slice(-2);',
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' g = (\'0\' + (Math.round(g) || 0).toString(16)).slice(-2);',
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' b = (\'0\' + (Math.round(b) || 0).toString(16)).slice(-2);',
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' return \'#\' + r + g + b;',
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'}']);
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var code = functionName + '(' + red + ', ' + green + ', ' + blue + ')';
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return [code, Blockly.JavaScript.ORDER_FUNCTION_CALL];
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};
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Blockly.JavaScript['colour_blend'] = function(block) {
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// Blend two colours together.
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var c1 = Blockly.JavaScript.valueToCode(block, 'COLOUR1',
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Blockly.JavaScript.ORDER_COMMA) || '\'#000000\'';
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var c2 = Blockly.JavaScript.valueToCode(block, 'COLOUR2',
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Blockly.JavaScript.ORDER_COMMA) || '\'#000000\'';
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var ratio = Blockly.JavaScript.valueToCode(block, 'RATIO',
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Blockly.JavaScript.ORDER_COMMA) || 0.5;
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var functionName = Blockly.JavaScript.provideFunction_(
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'colourBlend',
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['function ' + Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_ +
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'(c1, c2, ratio) {',
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' ratio = Math.max(Math.min(Number(ratio), 1), 0);',
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' var r1 = parseInt(c1.substring(1, 3), 16);',
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' var g1 = parseInt(c1.substring(3, 5), 16);',
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' var b1 = parseInt(c1.substring(5, 7), 16);',
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' var r2 = parseInt(c2.substring(1, 3), 16);',
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' var g2 = parseInt(c2.substring(3, 5), 16);',
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' var b2 = parseInt(c2.substring(5, 7), 16);',
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' var r = Math.round(r1 * (1 - ratio) + r2 * ratio);',
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' var g = Math.round(g1 * (1 - ratio) + g2 * ratio);',
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' var b = Math.round(b1 * (1 - ratio) + b2 * ratio);',
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' r = (\'0\' + (r || 0).toString(16)).slice(-2);',
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' g = (\'0\' + (g || 0).toString(16)).slice(-2);',
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' b = (\'0\' + (b || 0).toString(16)).slice(-2);',
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' return \'#\' + r + g + b;',
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'}']);
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var code = functionName + '(' + c1 + ', ' + c2 + ', ' + ratio + ')';
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return [code, Blockly.JavaScript.ORDER_FUNCTION_CALL];
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};
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