mirror of
https://github.com/google/blockly.git
synced 2026-01-08 09:30:06 +01:00
73 lines
2.8 KiB
JavaScript
73 lines
2.8 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2012 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @fileoverview Generating Python for colour blocks.
|
|
* @author fraser@google.com (Neil Fraser)
|
|
*/
|
|
'use strict';
|
|
|
|
goog.provide('Blockly.Python.colour');
|
|
|
|
goog.require('Blockly.Python');
|
|
|
|
|
|
Blockly.Python['colour_picker'] = function(block) {
|
|
// Colour picker.
|
|
var code = Blockly.Python.quote_(block.getFieldValue('COLOUR'));
|
|
return [code, Blockly.Python.ORDER_ATOMIC];
|
|
};
|
|
|
|
Blockly.Python['colour_random'] = function(block) {
|
|
// Generate a random colour.
|
|
Blockly.Python.definitions_['import_random'] = 'import random';
|
|
var code = '\'#%06x\' % random.randint(0, 2**24 - 1)';
|
|
return [code, Blockly.Python.ORDER_FUNCTION_CALL];
|
|
};
|
|
|
|
Blockly.Python['colour_rgb'] = function(block) {
|
|
// Compose a colour from RGB components expressed as percentages.
|
|
var functionName = Blockly.Python.provideFunction_(
|
|
'colour_rgb',
|
|
['def ' + Blockly.Python.FUNCTION_NAME_PLACEHOLDER_ + '(r, g, b):',
|
|
' r = round(min(100, max(0, r)) * 2.55)',
|
|
' g = round(min(100, max(0, g)) * 2.55)',
|
|
' b = round(min(100, max(0, b)) * 2.55)',
|
|
' return \'#%02x%02x%02x\' % (r, g, b)']);
|
|
var r = Blockly.Python.valueToCode(block, 'RED',
|
|
Blockly.Python.ORDER_NONE) || 0;
|
|
var g = Blockly.Python.valueToCode(block, 'GREEN',
|
|
Blockly.Python.ORDER_NONE) || 0;
|
|
var b = Blockly.Python.valueToCode(block, 'BLUE',
|
|
Blockly.Python.ORDER_NONE) || 0;
|
|
var code = functionName + '(' + r + ', ' + g + ', ' + b + ')';
|
|
return [code, Blockly.Python.ORDER_FUNCTION_CALL];
|
|
};
|
|
|
|
Blockly.Python['colour_blend'] = function(block) {
|
|
// Blend two colours together.
|
|
var functionName = Blockly.Python.provideFunction_(
|
|
'colour_blend',
|
|
['def ' + Blockly.Python.FUNCTION_NAME_PLACEHOLDER_ +
|
|
'(colour1, colour2, ratio):',
|
|
' r1, r2 = int(colour1[1:3], 16), int(colour2[1:3], 16)',
|
|
' g1, g2 = int(colour1[3:5], 16), int(colour2[3:5], 16)',
|
|
' b1, b2 = int(colour1[5:7], 16), int(colour2[5:7], 16)',
|
|
' ratio = min(1, max(0, ratio))',
|
|
' r = round(r1 * (1 - ratio) + r2 * ratio)',
|
|
' g = round(g1 * (1 - ratio) + g2 * ratio)',
|
|
' b = round(b1 * (1 - ratio) + b2 * ratio)',
|
|
' return \'#%02x%02x%02x\' % (r, g, b)']);
|
|
var colour1 = Blockly.Python.valueToCode(block, 'COLOUR1',
|
|
Blockly.Python.ORDER_NONE) || '\'#000000\'';
|
|
var colour2 = Blockly.Python.valueToCode(block, 'COLOUR2',
|
|
Blockly.Python.ORDER_NONE) || '\'#000000\'';
|
|
var ratio = Blockly.Python.valueToCode(block, 'RATIO',
|
|
Blockly.Python.ORDER_NONE) || 0;
|
|
var code = functionName + '(' + colour1 + ', ' + colour2 + ', ' + ratio + ')';
|
|
return [code, Blockly.Python.ORDER_FUNCTION_CALL];
|
|
};
|