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https://github.com/google/blockly.git
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b46a4fe286
* Google changed from an Inc to an LLC. This happened back in 2017 but we didn’t notice. Officially we should update files from Inc to LLC when they are changed as part of regular edits, but this is a nightmare to remember for the next decade. * Remove project description/titles from licenses This is no longer part of Google’s header requirements. Our existing descriptions were useless (“Visual Blocks Editor”) or grossly obselete (“Visual Blocks Language”). * License no longer requires URL. * Fix license regexps.
126 lines
4.8 KiB
JavaScript
126 lines
4.8 KiB
JavaScript
/**
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* @license
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* Copyright 2014 Google LLC
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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 Dart 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.Dart.colour');
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goog.require('Blockly.Dart');
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Blockly.Dart.addReservedWords('Math');
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Blockly.Dart['colour_picker'] = function(block) {
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// Colour picker.
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var code = Blockly.Dart.quote_(block.getFieldValue('COLOUR'));
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return [code, Blockly.Dart.ORDER_ATOMIC];
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};
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Blockly.Dart['colour_random'] = function(block) {
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// Generate a random colour.
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Blockly.Dart.definitions_['import_dart_math'] =
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'import \'dart:math\' as Math;';
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var functionName = Blockly.Dart.provideFunction_(
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'colour_random',
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['String ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ + '() {',
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' String hex = \'0123456789abcdef\';',
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' var rnd = new Math.Random();',
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' return \'#${hex[rnd.nextInt(16)]}${hex[rnd.nextInt(16)]}\'',
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' \'${hex[rnd.nextInt(16)]}${hex[rnd.nextInt(16)]}\'',
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' \'${hex[rnd.nextInt(16)]}${hex[rnd.nextInt(16)]}\';',
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'}']);
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var code = functionName + '()';
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return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
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};
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Blockly.Dart['colour_rgb'] = function(block) {
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// Compose a colour from RGB components expressed as percentages.
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var red = Blockly.Dart.valueToCode(block, 'RED',
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Blockly.Dart.ORDER_NONE) || 0;
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var green = Blockly.Dart.valueToCode(block, 'GREEN',
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Blockly.Dart.ORDER_NONE) || 0;
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var blue = Blockly.Dart.valueToCode(block, 'BLUE',
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Blockly.Dart.ORDER_NONE) || 0;
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Blockly.Dart.definitions_['import_dart_math'] =
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'import \'dart:math\' as Math;';
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var functionName = Blockly.Dart.provideFunction_(
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'colour_rgb',
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['String ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
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'(num r, num g, num b) {',
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' num rn = (Math.max(Math.min(r, 100), 0) * 2.55).round();',
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' String rs = rn.toInt().toRadixString(16);',
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' rs = \'0$rs\';',
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' rs = rs.substring(rs.length - 2);',
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' num gn = (Math.max(Math.min(g, 100), 0) * 2.55).round();',
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' String gs = gn.toInt().toRadixString(16);',
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' gs = \'0$gs\';',
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' gs = gs.substring(gs.length - 2);',
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' num bn = (Math.max(Math.min(b, 100), 0) * 2.55).round();',
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' String bs = bn.toInt().toRadixString(16);',
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' bs = \'0$bs\';',
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' bs = bs.substring(bs.length - 2);',
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' return \'#$rs$gs$bs\';',
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'}']);
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var code = functionName + '(' + red + ', ' + green + ', ' + blue + ')';
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return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
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};
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Blockly.Dart['colour_blend'] = function(block) {
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// Blend two colours together.
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var c1 = Blockly.Dart.valueToCode(block, 'COLOUR1',
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Blockly.Dart.ORDER_NONE) || '\'#000000\'';
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var c2 = Blockly.Dart.valueToCode(block, 'COLOUR2',
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Blockly.Dart.ORDER_NONE) || '\'#000000\'';
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var ratio = Blockly.Dart.valueToCode(block, 'RATIO',
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Blockly.Dart.ORDER_NONE) || 0.5;
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Blockly.Dart.definitions_['import_dart_math'] =
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'import \'dart:math\' as Math;';
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var functionName = Blockly.Dart.provideFunction_(
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'colour_blend',
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['String ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
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'(String c1, String c2, num ratio) {',
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' ratio = Math.max(Math.min(ratio, 1), 0);',
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' int r1 = int.parse(\'0x${c1.substring(1, 3)}\');',
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' int g1 = int.parse(\'0x${c1.substring(3, 5)}\');',
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' int b1 = int.parse(\'0x${c1.substring(5, 7)}\');',
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' int r2 = int.parse(\'0x${c2.substring(1, 3)}\');',
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' int g2 = int.parse(\'0x${c2.substring(3, 5)}\');',
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' int b2 = int.parse(\'0x${c2.substring(5, 7)}\');',
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' num rn = (r1 * (1 - ratio) + r2 * ratio).round();',
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' String rs = rn.toInt().toRadixString(16);',
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' num gn = (g1 * (1 - ratio) + g2 * ratio).round();',
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' String gs = gn.toInt().toRadixString(16);',
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' num bn = (b1 * (1 - ratio) + b2 * ratio).round();',
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' String bs = bn.toInt().toRadixString(16);',
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' rs = \'0$rs\';',
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' rs = rs.substring(rs.length - 2);',
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' gs = \'0$gs\';',
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' gs = gs.substring(gs.length - 2);',
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' bs = \'0$bs\';',
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' bs = bs.substring(bs.length - 2);',
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' return \'#$rs$gs$bs\';',
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'}']);
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var code = functionName + '(' + c1 + ', ' + c2 + ', ' + ratio + ')';
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return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
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};
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