mirror of
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.
88 lines
3.4 KiB
JavaScript
88 lines
3.4 KiB
JavaScript
/**
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* @license
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* Copyright 2016 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 Lua for colour blocks.
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* @author rodrigoq@google.com (Rodrigo Queiro)
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*/
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'use strict';
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goog.provide('Blockly.Lua.colour');
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goog.require('Blockly.Lua');
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Blockly.Lua['colour_picker'] = function(block) {
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// Colour picker.
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var code = Blockly.Lua.quote_(block.getFieldValue('COLOUR'));
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return [code, Blockly.Lua.ORDER_ATOMIC];
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};
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Blockly.Lua['colour_random'] = function(block) {
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// Generate a random colour.
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var code = 'string.format("#%06x", math.random(0, 2^24 - 1))';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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Blockly.Lua['colour_rgb'] = function(block) {
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// Compose a colour from RGB components expressed as percentages.
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var functionName = Blockly.Lua.provideFunction_(
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'colour_rgb',
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['function ' + Blockly.Lua.FUNCTION_NAME_PLACEHOLDER_ + '(r, g, b)',
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' r = math.floor(math.min(100, math.max(0, r)) * 2.55 + .5)',
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' g = math.floor(math.min(100, math.max(0, g)) * 2.55 + .5)',
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' b = math.floor(math.min(100, math.max(0, b)) * 2.55 + .5)',
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' return string.format("#%02x%02x%02x", r, g, b)',
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'end']);
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var r = Blockly.Lua.valueToCode(block, 'RED',
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Blockly.Lua.ORDER_NONE) || 0;
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var g = Blockly.Lua.valueToCode(block, 'GREEN',
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Blockly.Lua.ORDER_NONE) || 0;
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var b = Blockly.Lua.valueToCode(block, 'BLUE',
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Blockly.Lua.ORDER_NONE) || 0;
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var code = functionName + '(' + r + ', ' + g + ', ' + b + ')';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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Blockly.Lua['colour_blend'] = function(block) {
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// Blend two colours together.
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var functionName = Blockly.Lua.provideFunction_(
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'colour_blend',
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['function ' + Blockly.Lua.FUNCTION_NAME_PLACEHOLDER_ +
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'(colour1, colour2, ratio)',
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' local r1 = tonumber(string.sub(colour1, 2, 3), 16)',
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' local r2 = tonumber(string.sub(colour2, 2, 3), 16)',
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' local g1 = tonumber(string.sub(colour1, 4, 5), 16)',
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' local g2 = tonumber(string.sub(colour2, 4, 5), 16)',
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' local b1 = tonumber(string.sub(colour1, 6, 7), 16)',
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' local b2 = tonumber(string.sub(colour2, 6, 7), 16)',
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' local ratio = math.min(1, math.max(0, ratio))',
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' local r = math.floor(r1 * (1 - ratio) + r2 * ratio + .5)',
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' local g = math.floor(g1 * (1 - ratio) + g2 * ratio + .5)',
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' local b = math.floor(b1 * (1 - ratio) + b2 * ratio + .5)',
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' return string.format("#%02x%02x%02x", r, g, b)',
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'end']);
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var colour1 = Blockly.Lua.valueToCode(block, 'COLOUR1',
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Blockly.Lua.ORDER_NONE) || '\'#000000\'';
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var colour2 = Blockly.Lua.valueToCode(block, 'COLOUR2',
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Blockly.Lua.ORDER_NONE) || '\'#000000\'';
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var ratio = Blockly.Lua.valueToCode(block, 'RATIO',
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Blockly.Lua.ORDER_NONE) || 0;
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var code = functionName + '(' + colour1 + ', ' + colour2 + ', ' + ratio + ')';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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