mirror of
https://github.com/scratchfoundation/scratch-blocks.git
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195 lines
3.9 KiB
JavaScript
195 lines
3.9 KiB
JavaScript
/**
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* @license
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* Visual Blocks Editor
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*
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* Copyright 2016 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 Blockly constants.
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* @author fenichel@google.com (Rachel Fenichel)
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*/
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'use strict';
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goog.provide('Blockly.constants');
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/**
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* Number of pixels the mouse must move before a drag starts.
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*/
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Blockly.DRAG_RADIUS = 5;
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/**
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* Maximum misalignment between connections for them to snap together.
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*/
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Blockly.SNAP_RADIUS = 20;
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/**
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* Delay in ms between trigger and bumping unconnected block out of alignment.
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*/
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Blockly.BUMP_DELAY = 250;
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/**
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* Number of characters to truncate a collapsed block to.
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*/
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Blockly.COLLAPSE_CHARS = 30;
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/**
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* Length in ms for a touch to become a long press.
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*/
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Blockly.LONGPRESS = 750;
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/**
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* Prevent a sound from playing if another sound preceded it within this many
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* miliseconds.
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*/
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Blockly.SOUND_LIMIT = 100;
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/**
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* The richness of block colours, regardless of the hue.
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* Must be in the range of 0 (inclusive) to 1 (exclusive).
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*/
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Blockly.HSV_SATURATION = 0.45;
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/**
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* The intensity of block colours, regardless of the hue.
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* Must be in the range of 0 (inclusive) to 1 (exclusive).
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*/
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Blockly.HSV_VALUE = 0.65;
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/**
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* Sprited icons and images.
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*/
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Blockly.SPRITE = {
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width: 96,
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height: 124,
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url: 'sprites.png'
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};
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// Constants below this point are not intended to be changed.
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/**
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* Required name space for SVG elements.
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* @const
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*/
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Blockly.SVG_NS = 'http://www.w3.org/2000/svg';
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/**
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* Required name space for HTML elements.
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* @const
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*/
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Blockly.HTML_NS = 'http://www.w3.org/1999/xhtml';
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/**
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* ENUM for a right-facing value input. E.g. 'set item to' or 'return'.
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* @const
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*/
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Blockly.INPUT_VALUE = 1;
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/**
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* ENUM for a left-facing value output. E.g. 'random fraction'.
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* @const
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*/
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Blockly.OUTPUT_VALUE = 2;
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/**
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* ENUM for a down-facing block stack. E.g. 'if-do' or 'else'.
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* @const
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*/
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Blockly.NEXT_STATEMENT = 3;
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/**
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* ENUM for an up-facing block stack. E.g. 'break out of loop'.
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* @const
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*/
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Blockly.PREVIOUS_STATEMENT = 4;
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/**
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* ENUM for an dummy input. Used to add field(s) with no input.
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* @const
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*/
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Blockly.DUMMY_INPUT = 5;
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/**
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* ENUM for left alignment.
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* @const
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*/
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Blockly.ALIGN_LEFT = -1;
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/**
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* ENUM for centre alignment.
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* @const
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*/
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Blockly.ALIGN_CENTRE = 0;
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/**
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* ENUM for right alignment.
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* @const
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*/
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Blockly.ALIGN_RIGHT = 1;
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/**
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* ENUM for no drag operation.
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* @const
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*/
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Blockly.DRAG_NONE = 0;
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/**
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* ENUM for inside the sticky DRAG_RADIUS.
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* @const
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*/
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Blockly.DRAG_STICKY = 1;
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/**
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* ENUM for freely draggable.
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* @const
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*/
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Blockly.DRAG_FREE = 2;
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/**
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* Lookup table for determining the opposite type of a connection.
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* @const
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*/
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Blockly.OPPOSITE_TYPE = [];
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Blockly.OPPOSITE_TYPE[Blockly.INPUT_VALUE] = Blockly.OUTPUT_VALUE;
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Blockly.OPPOSITE_TYPE[Blockly.OUTPUT_VALUE] = Blockly.INPUT_VALUE;
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Blockly.OPPOSITE_TYPE[Blockly.NEXT_STATEMENT] = Blockly.PREVIOUS_STATEMENT;
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Blockly.OPPOSITE_TYPE[Blockly.PREVIOUS_STATEMENT] = Blockly.NEXT_STATEMENT;
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/**
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* ENUM for toolbox and flyout at top of screen.
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* @const
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*/
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Blockly.TOOLBOX_AT_TOP = 0;
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/**
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* ENUM for toolbox and flyout at bottom of screen.
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* @const
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*/
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Blockly.TOOLBOX_AT_BOTTOM = 1;
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/**
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* ENUM for toolbox and flyout at left of screen.
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* @const
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*/
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Blockly.TOOLBOX_AT_LEFT = 2;
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/**
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* ENUM for toolbox and flyout at right of screen.
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* @const
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*/
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Blockly.TOOLBOX_AT_RIGHT = 3;
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