2010-05-15 20:28:55 +01:00
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/*
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* noVNC: HTML5 VNC client
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2010-05-26 21:43:00 +01:00
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* Copyright (C) 2010 Joel Martin
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* Licensed under LGPL-3 (see LICENSE.LGPL-3)
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2010-05-15 20:28:55 +01:00
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*
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* See README.md for usage and integration instructions.
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*/
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2010-06-15 21:21:41 +01:00
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"use strict";
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/*jslint white: false, bitwise: false */
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/*global window, console, $, Util */
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2010-05-15 20:28:55 +01:00
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// Everything namespaced inside Canvas
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var Canvas = {
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2010-04-04 22:08:55 +01:00
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2010-05-17 16:18:37 +01:00
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prefer_js : false,
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2010-06-01 20:34:27 +01:00
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true_color : false,
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colourMap : [],
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2010-04-04 22:08:55 +01:00
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c_wx : 0,
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c_wy : 0,
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2010-04-06 05:54:30 +01:00
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ctx : null,
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2010-04-04 22:08:55 +01:00
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2010-04-14 18:22:47 +01:00
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prevStyle: "",
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2010-06-15 21:21:41 +01:00
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focused : true,
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2010-06-15 15:36:23 +01:00
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keyPress : null,
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mouseButton : null,
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mouseMove : null,
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onMouseButton: function(e, down) {
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2010-06-15 17:10:18 +01:00
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var evt, pos, bmask;
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2010-06-15 21:21:41 +01:00
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evt = (e ? e : window.event);
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pos = Util.getEventPosition(e, $(Canvas.id));
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2010-06-15 15:36:23 +01:00
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bmask = 1 << evt.button;
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2010-06-15 21:21:41 +01:00
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//console.log('mouse ' + pos.x + "," + pos.y + " down: " + down + " bmask: " + bmask);
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2010-06-15 15:36:23 +01:00
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if (Canvas.mouseButton) {
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2010-06-15 17:10:18 +01:00
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Canvas.mouseButton(pos.x, pos.y, down, bmask);
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2010-06-15 15:36:23 +01:00
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}
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2010-06-15 21:21:41 +01:00
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Util.stopEvent(e);
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2010-06-15 15:36:23 +01:00
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return false;
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2010-04-04 22:08:55 +01:00
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},
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2010-04-04 21:46:39 +01:00
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2010-06-15 15:36:23 +01:00
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onMouseDown: function (e) {
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Canvas.onMouseButton(e, 1);
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2010-04-04 22:08:55 +01:00
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},
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2010-04-04 21:46:39 +01:00
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2010-06-15 15:36:23 +01:00
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onMouseUp: function (e) {
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Canvas.onMouseButton(e, 0);
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2010-04-14 18:44:47 +01:00
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},
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2010-06-15 15:36:23 +01:00
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onMouseWheel: function (e) {
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2010-06-15 21:21:41 +01:00
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var evt, pos, bmask, wheelData;
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evt = (e ? e : window.event);
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pos = Util.getEventPosition(e, $(Canvas.id));
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wheelData = evt.detail ? evt.detail * -1 : evt.wheelDelta / 40;
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2010-06-15 15:36:23 +01:00
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if (wheelData > 0) {
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bmask = 1 << 3;
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} else {
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bmask = 1 << 4;
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}
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2010-06-15 17:10:18 +01:00
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//console.log('mouse scroll by ' + wheelData + ':' + pos.x + "," + pos.y);
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2010-06-15 15:36:23 +01:00
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if (Canvas.mouseButton) {
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2010-06-15 17:10:18 +01:00
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Canvas.mouseButton(pos.x, pos.y, 1, bmask);
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Canvas.mouseButton(pos.x, pos.y, 0, bmask);
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2010-06-15 15:36:23 +01:00
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}
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2010-06-15 21:21:41 +01:00
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Util.stopEvent(e);
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2010-06-15 15:36:23 +01:00
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return false;
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2010-05-25 17:05:55 +01:00
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},
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2010-04-14 18:44:47 +01:00
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2010-06-15 15:36:23 +01:00
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onMouseMove: function (e) {
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var evt, pos;
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2010-06-15 21:21:41 +01:00
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evt = (e ? e : window.event);
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pos = Util.getEventPosition(e, $(Canvas.id));
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2010-06-15 17:10:18 +01:00
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//console.log('mouse ' + evt.which + '/' + evt.button + ' up:' + pos.x + "," + pos.y);
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if (Canvas.mouseMove) {
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Canvas.mouseMove(pos.x, pos.y);
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2010-06-15 15:36:23 +01:00
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}
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},
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onKeyDown: function (e) {
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2010-06-15 21:21:41 +01:00
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//console.log("keydown: " + Canvas.getKeysym(e));
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if (! Canvas.focused) {
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return true;
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}
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2010-06-15 15:36:23 +01:00
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if (Canvas.keyPress) {
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Canvas.keyPress(Canvas.getKeysym(e), 1);
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}
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2010-06-15 21:21:41 +01:00
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Util.stopEvent(e);
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2010-06-15 15:36:23 +01:00
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return false;
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2010-04-04 22:08:55 +01:00
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},
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2010-04-04 21:46:39 +01:00
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2010-06-15 15:36:23 +01:00
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onKeyUp : function (e) {
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//console.log("keyup: " + e.key + "(" + e.code + ")");
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2010-06-15 21:21:41 +01:00
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if (! Canvas.focused) {
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return true;
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}
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2010-06-15 15:36:23 +01:00
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if (Canvas.keyPress) {
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Canvas.keyPress(Canvas.getKeysym(e), 0);
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}
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2010-06-15 21:21:41 +01:00
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Util.stopEvent(e);
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2010-06-15 15:36:23 +01:00
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return false;
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2010-04-04 22:08:55 +01:00
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},
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2010-04-04 21:46:39 +01:00
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2010-06-15 15:36:23 +01:00
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onMouseDisable: function (e) {
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var evt, pos;
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2010-06-15 21:21:41 +01:00
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evt = (e ? e : window.event);
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pos = Util.getPosition($(Canvas.id));
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2010-04-04 21:46:39 +01:00
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/* Stop propagation if inside canvas area */
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2010-06-15 17:10:18 +01:00
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if ((evt.clientX >= pos.x) &&
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(evt.clientY >= pos.y) &&
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(evt.clientX < (pos.x + Canvas.c_wx)) &&
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(evt.clientY < (pos.y + Canvas.c_wy))) {
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2010-06-15 21:21:41 +01:00
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//console.log("mouse event disabled");
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Util.stopEvent(e);
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2010-04-04 21:46:39 +01:00
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return false;
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2010-05-15 20:28:55 +01:00
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}
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2010-06-15 21:21:41 +01:00
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//console.log("mouse event not disabled");
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return true;
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2010-04-04 22:08:55 +01:00
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},
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2010-04-04 21:46:39 +01:00
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2010-06-15 15:36:23 +01:00
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init: function (id, width, height, true_color, keyPress,
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mouseButton, mouseMove) {
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2010-06-15 21:21:41 +01:00
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console.log(">> Canvas.init");
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2010-04-04 21:46:39 +01:00
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2010-04-06 19:49:49 +01:00
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Canvas.id = id;
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2010-06-15 15:36:23 +01:00
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Canvas.keyPress = keyPress || null;
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Canvas.mouseButton = mouseButton || null;
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Canvas.mouseMove = mouseMove || null;
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2010-04-06 05:54:30 +01:00
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2010-04-06 19:49:49 +01:00
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var c = $(Canvas.id);
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2010-06-15 21:21:41 +01:00
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Util.addEvent(document, 'keydown', Canvas.onKeyDown);
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Util.addEvent(document, 'keyup', Canvas.onKeyUp);
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Util.addEvent(c, 'mousedown', Canvas.onMouseDown);
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Util.addEvent(c, 'mouseup', Canvas.onMouseUp);
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Util.addEvent(c, 'mousemove', Canvas.onMouseMove);
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Util.addEvent(c, (Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel',
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Canvas.onMouseWheel);
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2010-04-04 21:46:39 +01:00
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/* Work around right and middle click browser behaviors */
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2010-06-15 21:21:41 +01:00
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Util.addEvent(document, 'click', Canvas.onMouseDisable);
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Util.addEvent(document.body, 'contextmenu', Canvas.onMouseDisable);
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2010-04-04 21:46:39 +01:00
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2010-06-10 21:44:42 +01:00
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Canvas.resize(width, height);
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2010-06-15 21:21:41 +01:00
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Canvas.c_wx = c.offsetWidth;
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Canvas.c_wy = c.offsetHeight;
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2010-06-01 20:34:27 +01:00
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Canvas.true_color = true_color;
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Canvas.colourMap = [];
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2010-04-04 21:46:39 +01:00
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2010-05-15 20:28:55 +01:00
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if (! c.getContext) { return; }
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Canvas.ctx = c.getContext('2d');
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2010-04-14 18:22:47 +01:00
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Canvas.prevStyle = "";
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2010-06-15 21:21:41 +01:00
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Canvas.focused = true;
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2010-04-04 21:46:39 +01:00
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2010-06-15 21:21:41 +01:00
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if (Util.Engine.webkit) {
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2010-05-17 16:18:37 +01:00
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Canvas.prefer_js = true;
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}
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2010-06-14 20:42:34 +01:00
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//console.log("<< Canvas.init");
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2010-04-06 19:49:49 +01:00
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},
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clear: function () {
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Canvas.ctx.clearRect(0, 0, Canvas.c_wx, Canvas.c_wy);
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2010-06-10 21:44:42 +01:00
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Canvas.resize(640, 20);
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},
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resize: function (width, height) {
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2010-04-14 18:13:59 +01:00
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var c = $(Canvas.id);
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2010-06-10 21:44:42 +01:00
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c.width = width;
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c.height = height;
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2010-04-14 18:13:59 +01:00
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},
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stop: function () {
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2010-04-06 19:49:49 +01:00
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var c = $(Canvas.id);
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2010-06-15 21:21:41 +01:00
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Util.removeEvent(document, 'keydown', Canvas.onKeyDown);
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Util.removeEvent(document, 'keyup', Canvas.onKeyUp);
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Util.removeEvent(c, 'mousedown', Canvas.onMouseDown);
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Util.removeEvent(c, 'mouseup', Canvas.onMouseUp);
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Util.removeEvent(c, 'mousemove', Canvas.onMouseMove);
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Util.removeEvent(c, (Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel',
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Canvas.onMouseWheel);
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2010-04-13 15:39:29 +01:00
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/* Work around right and middle click browser behaviors */
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2010-06-15 21:21:41 +01:00
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Util.removeEvent(document, 'click', Canvas.onMouseDisable);
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Util.removeEvent(document.body, 'contextmenu', Canvas.onMouseDisable);
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2010-04-06 19:49:49 +01:00
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},
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2010-05-15 18:27:44 +01:00
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/*
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* Tile rendering functions optimized for rendering engines.
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*
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* - In Chrome/webkit, Javascript image data array manipulations are
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* faster than direct Canvas fillStyle, fillRect rendering. In
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* gecko, Javascript array handling is much slower.
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*/
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getTile: function(x, y, width, height, color) {
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2010-06-01 20:34:27 +01:00
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var img, data, p, rgb, red, green, blue, j, i;
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2010-05-15 20:28:55 +01:00
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img = {'x': x, 'y': y, 'width': width, 'height': height,
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'data': []};
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2010-05-17 16:18:37 +01:00
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if (Canvas.prefer_js) {
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data = img.data;
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2010-06-01 20:34:27 +01:00
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if (Canvas.true_color) {
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rgb = color;
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} else {
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rgb = Canvas.colourMap[color[0]];
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}
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red = rgb[0];
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green = rgb[1];
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blue = rgb[2];
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2010-06-15 21:21:41 +01:00
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for (j = 0; j < height; j += 1) {
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for (i = 0; i < width; i += 1) {
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2010-05-15 18:27:44 +01:00
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p = (i + (j * width) ) * 4;
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2010-06-01 20:34:27 +01:00
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data[p + 0] = red;
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data[p + 1] = green;
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data[p + 2] = blue;
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//data[p + 3] = 255; // Set Alpha
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2010-05-15 18:27:44 +01:00
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}
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}
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} else {
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Canvas.fillRect(x, y, width, height, color);
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}
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return img;
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},
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setTile: function(img, x, y, w, h, color) {
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2010-06-01 20:34:27 +01:00
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var data, p, rgb, red, green, blue, width, j, i;
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2010-05-17 16:18:37 +01:00
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if (Canvas.prefer_js) {
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data = img.data;
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2010-05-15 20:28:55 +01:00
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width = img.width;
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2010-06-01 20:34:27 +01:00
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if (Canvas.true_color) {
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rgb = color;
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} else {
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rgb = Canvas.colourMap[color[0]];
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}
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red = rgb[0];
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green = rgb[1];
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blue = rgb[2];
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2010-06-15 21:21:41 +01:00
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for (j = 0; j < h; j += 1) {
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for (i = 0; i < w; i += 1) {
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2010-05-15 18:27:44 +01:00
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p = (x + i + ((y + j) * width) ) * 4;
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2010-05-17 16:18:37 +01:00
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data[p + 0] = red;
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data[p + 1] = green;
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data[p + 2] = blue;
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2010-05-15 18:27:44 +01:00
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//img.data[p + 3] = 255; // Set Alpha
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}
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}
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} else {
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Canvas.fillRect(img.x + x, img.y + y, w, h, color);
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}
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},
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putTile: function(img) {
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2010-05-17 16:18:37 +01:00
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if (Canvas.prefer_js) {
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2010-05-20 23:13:59 +01:00
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Canvas.rgbxImage(img.x, img.y, img.width, img.height, img.data, 0);
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2010-05-15 18:27:44 +01:00
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//Canvas.ctx.putImageData(img, img.x, img.y);
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} else {
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// No-op, under gecko already done by setTile
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}
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},
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2010-05-20 23:13:59 +01:00
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rgbxImage: function(x, y, width, height, arr, offset) {
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var img, i, j, data;
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//console.log("rfbxImage: img: " + img + " x: " + x + " y: " + y + " width: " + width + " height: " + height);
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2010-04-19 00:43:03 +01:00
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/* Old firefox and Opera don't support createImageData */
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2010-05-15 20:28:55 +01:00
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img = Canvas.ctx.getImageData(0, 0, width, height);
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2010-05-17 16:18:37 +01:00
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data = img.data;
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2010-06-01 20:34:27 +01:00
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for (i=0, j=offset; i < (width * height * 4); i=i+4, j=j+4) {
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2010-05-20 23:13:59 +01:00
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data[i + 0] = arr[j + 0];
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data[i + 1] = arr[j + 1];
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data[i + 2] = arr[j + 2];
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data[i + 3] = 255; // Set Alpha
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2010-04-06 05:54:30 +01:00
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}
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|
Canvas.ctx.putImageData(img, x, y);
|
2010-06-01 20:34:27 +01:00
|
|
|
},
|
2010-04-06 05:54:30 +01:00
|
|
|
|
2010-06-01 20:34:27 +01:00
|
|
|
cmapImage: function(x, y, width, height, arr, offset) {
|
2010-06-15 21:21:41 +01:00
|
|
|
var img, i, j, data, rgb, cmap;
|
2010-06-01 20:34:27 +01:00
|
|
|
img = Canvas.ctx.getImageData(0, 0, width, height);
|
|
|
|
data = img.data;
|
|
|
|
cmap = Canvas.colourMap;
|
|
|
|
//console.log("cmapImage x: " + x + ", y: " + y + "arr.slice(0,20): " + arr.slice(0,20));
|
2010-06-15 21:21:41 +01:00
|
|
|
for (i=0, j=offset; i < (width * height * 4); i=i+4, j += 1) {
|
2010-06-01 20:34:27 +01:00
|
|
|
rgb = cmap[arr[j]];
|
|
|
|
data[i + 0] = rgb[0];
|
|
|
|
data[i + 1] = rgb[1];
|
|
|
|
data[i + 2] = rgb[2];
|
|
|
|
data[i + 3] = 255; // Set Alpha
|
|
|
|
}
|
|
|
|
Canvas.ctx.putImageData(img, x, y);
|
|
|
|
},
|
|
|
|
|
|
|
|
blitImage: function(x, y, width, height, arr, offset) {
|
|
|
|
if (Canvas.true_color) {
|
|
|
|
Canvas.rgbxImage(x, y, width, height, arr, offset);
|
|
|
|
} else {
|
|
|
|
Canvas.cmapImage(x, y, width, height, arr, offset);
|
|
|
|
}
|
2010-04-06 22:24:09 +01:00
|
|
|
},
|
|
|
|
|
2010-04-14 18:22:47 +01:00
|
|
|
fillRect: function(x, y, width, height, color) {
|
2010-06-01 20:34:27 +01:00
|
|
|
var rgb, newStyle;
|
|
|
|
if (Canvas.true_color) {
|
|
|
|
rgb = color;
|
|
|
|
} else {
|
|
|
|
rgb = Canvas.colourMap[color[0]];
|
|
|
|
}
|
2010-05-15 20:28:55 +01:00
|
|
|
if (newStyle !== Canvas.prevStyle) {
|
2010-06-01 20:34:27 +01:00
|
|
|
newStyle = "rgb(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + ")";
|
2010-04-14 18:22:47 +01:00
|
|
|
Canvas.ctx.fillStyle = newStyle;
|
2010-05-15 20:28:55 +01:00
|
|
|
Canvas.prevStyle = newStyle;
|
2010-04-14 18:22:47 +01:00
|
|
|
}
|
2010-04-12 05:11:21 +01:00
|
|
|
Canvas.ctx.fillRect(x, y, width, height);
|
|
|
|
},
|
|
|
|
|
2010-04-07 04:44:12 +01:00
|
|
|
copyImage: function(old_x, old_y, new_x, new_y, width, height) {
|
|
|
|
Canvas.ctx.drawImage($(Canvas.id), old_x, old_y, width, height,
|
|
|
|
new_x, new_y, width, height);
|
|
|
|
},
|
|
|
|
|
2010-04-06 22:24:09 +01:00
|
|
|
/* Translate DOM key event to keysym value */
|
|
|
|
getKeysym: function(e) {
|
2010-05-15 20:28:55 +01:00
|
|
|
var evt, keysym;
|
2010-06-15 21:21:41 +01:00
|
|
|
evt = (e ? e : window.event);
|
2010-04-06 22:24:09 +01:00
|
|
|
|
|
|
|
/* Remap modifier and special keys */
|
|
|
|
switch ( evt.keyCode ) {
|
|
|
|
case 8 : keysym = 0xFF08; break; // BACKSPACE
|
|
|
|
case 9 : keysym = 0xFF09; break; // TAB
|
|
|
|
case 13 : keysym = 0xFF0D; break; // ENTER
|
|
|
|
case 27 : keysym = 0xFF1B; break; // ESCAPE
|
|
|
|
case 45 : keysym = 0xFF63; break; // INSERT
|
|
|
|
case 46 : keysym = 0xFFFF; break; // DELETE
|
|
|
|
case 36 : keysym = 0xFF50; break; // HOME
|
|
|
|
case 35 : keysym = 0xFF57; break; // END
|
|
|
|
case 33 : keysym = 0xFF55; break; // PAGE_UP
|
|
|
|
case 34 : keysym = 0xFF56; break; // PAGE_DOWN
|
|
|
|
case 37 : keysym = 0xFF51; break; // LEFT
|
|
|
|
case 38 : keysym = 0xFF52; break; // UP
|
|
|
|
case 39 : keysym = 0xFF53; break; // RIGHT
|
|
|
|
case 40 : keysym = 0xFF54; break; // DOWN
|
|
|
|
case 112 : keysym = 0xFFBE; break; // F1
|
|
|
|
case 113 : keysym = 0xFFBF; break; // F2
|
|
|
|
case 114 : keysym = 0xFFC0; break; // F3
|
|
|
|
case 115 : keysym = 0xFFC1; break; // F4
|
|
|
|
case 116 : keysym = 0xFFC2; break; // F5
|
|
|
|
case 117 : keysym = 0xFFC3; break; // F6
|
|
|
|
case 118 : keysym = 0xFFC4; break; // F7
|
|
|
|
case 119 : keysym = 0xFFC5; break; // F8
|
|
|
|
case 120 : keysym = 0xFFC6; break; // F9
|
|
|
|
case 121 : keysym = 0xFFC7; break; // F10
|
|
|
|
case 122 : keysym = 0xFFC8; break; // F11
|
|
|
|
case 123 : keysym = 0xFFC9; break; // F12
|
|
|
|
case 16 : keysym = 0xFFE1; break; // SHIFT
|
|
|
|
case 17 : keysym = 0xFFE3; break; // CONTROL
|
2010-06-03 15:28:44 +01:00
|
|
|
//case 18 : keysym = 0xFFE7; break; // Left Meta (Mac Option)
|
|
|
|
case 18 : keysym = 0xFFE9; break; // Left ALT (Mac Command)
|
2010-04-06 22:24:09 +01:00
|
|
|
default : keysym = evt.keyCode; break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Remap symbols */
|
|
|
|
switch (keysym) {
|
|
|
|
case 186 : keysym = 59; break; // ; (IE)
|
|
|
|
case 187 : keysym = 61; break; // = (IE)
|
|
|
|
case 188 : keysym = 44; break; // , (Mozilla, IE)
|
2010-04-18 22:19:10 +01:00
|
|
|
case 109 : // - (Mozilla)
|
2010-06-15 21:21:41 +01:00
|
|
|
if (Util.Engine.gecko) {
|
2010-05-15 20:28:55 +01:00
|
|
|
keysym = 45; }
|
|
|
|
break;
|
2010-04-06 22:24:09 +01:00
|
|
|
case 189 : keysym = 45; break; // - (IE)
|
|
|
|
case 190 : keysym = 46; break; // . (Mozilla, IE)
|
|
|
|
case 191 : keysym = 47; break; // / (Mozilla, IE)
|
|
|
|
case 192 : keysym = 96; break; // ` (Mozilla, IE)
|
|
|
|
case 219 : keysym = 91; break; // [ (Mozilla, IE)
|
|
|
|
case 220 : keysym = 92; break; // \ (Mozilla, IE)
|
|
|
|
case 221 : keysym = 93; break; // ] (Mozilla, IE)
|
|
|
|
case 222 : keysym = 39; break; // ' (Mozilla, IE)
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Remap shifted and unshifted keys */
|
|
|
|
if (!!evt.shiftKey) {
|
|
|
|
switch (keysym) {
|
|
|
|
case 48 : keysym = 41 ; break; // ) (shifted 0)
|
|
|
|
case 49 : keysym = 33 ; break; // ! (shifted 1)
|
|
|
|
case 50 : keysym = 64 ; break; // @ (shifted 2)
|
|
|
|
case 51 : keysym = 35 ; break; // # (shifted 3)
|
|
|
|
case 52 : keysym = 36 ; break; // $ (shifted 4)
|
|
|
|
case 53 : keysym = 37 ; break; // % (shifted 5)
|
|
|
|
case 54 : keysym = 94 ; break; // ^ (shifted 6)
|
|
|
|
case 55 : keysym = 38 ; break; // & (shifted 7)
|
|
|
|
case 56 : keysym = 42 ; break; // * (shifted 8)
|
|
|
|
case 57 : keysym = 40 ; break; // ( (shifted 9)
|
|
|
|
|
|
|
|
case 59 : keysym = 58 ; break; // : (shifted `)
|
|
|
|
case 61 : keysym = 43 ; break; // + (shifted ;)
|
|
|
|
case 44 : keysym = 60 ; break; // < (shifted ,)
|
|
|
|
case 45 : keysym = 95 ; break; // _ (shifted -)
|
|
|
|
case 46 : keysym = 62 ; break; // > (shifted .)
|
|
|
|
case 47 : keysym = 63 ; break; // ? (shifted /)
|
|
|
|
case 96 : keysym = 126; break; // ~ (shifted `)
|
|
|
|
case 91 : keysym = 123; break; // { (shifted [)
|
|
|
|
case 92 : keysym = 124; break; // | (shifted \)
|
|
|
|
case 93 : keysym = 125; break; // } (shifted ])
|
|
|
|
case 39 : keysym = 34 ; break; // " (shifted ')
|
|
|
|
}
|
|
|
|
} else if ((keysym >= 65) && (keysym <=90)) {
|
|
|
|
/* Remap unshifted A-Z */
|
|
|
|
keysym += 32;
|
|
|
|
}
|
|
|
|
|
|
|
|
return keysym;
|
2010-04-04 21:46:39 +01:00
|
|
|
}
|
|
|
|
|
2010-04-06 22:24:09 +01:00
|
|
|
|
2010-04-04 22:08:55 +01:00
|
|
|
};
|
|
|
|
|