tween.as

flash图片加载系统,为as2.0的源代码,希望对大家有用,

							if (objProp._propStart == undefined) objProp._propStart = 0;
						} else if (objProp._prop == "__special_bevel_strength__") {
							for (var j=0; j<objProp._targ.filters.length; j++) if (objProp._targ.filters[j] instanceof flash.filters.BevelFilter) objProp._propStart = objProp._targ.filters[j].strength;
							if (objProp._propStart == undefined) objProp._propStart = 1;

						// ...Something else (hardly) ----------------------------------------------------------------
						} else {
							objProp._propStart = objProp._targ[objProp._prop];
						}
					} else {
						// Normal cases
						objProp._propStart = objProp._targ[objProp._prop];
					}
				}

				var endTime = objProp._timeDest + (objProp._delay*1000);
				if (endTime <= tTime) {
					// Finished, just use the end value for the last update
					var newValue = objProp._propDest;
				} else {
					// Continue, in-tween
					var newValue = _global.findTweenValue (objProp._propStart, objProp._propDest, objProp._timeStart, tTime-(objProp._delay*1000), objProp._timeDest, objProp._animType, objProp._extra1, objProp._extra2);
				}

				// sets the property value... this is done to have a 'correct' value in the target object

				objProp._targ[objProp._prop] = objProp._extras.mustRound ? Math.round(newValue) : newValue; // 2.26.27: option for rounded

				// special hard-coded case for movieclip color transformation...
				if (objProp._prop == "__special_mc_frame__") {
					objProp._targ.gotoAndStop(Math.round(newValue));
				} else if (objProp._prop == "__special_mc_ra__") {
					new Color(objProp._targ).setTransform({ra:newValue});
				} else if (objProp._prop == "__special_mc_rb__") {
					new Color(objProp._targ).setTransform({rb:newValue});
				} else if (objProp._prop == "__special_mc_ga__") {
					new Color(objProp._targ).setTransform({ga:newValue});
				} else if (objProp._prop == "__special_mc_gb__") {
					new Color(objProp._targ).setTransform({gb:newValue});
				} else if (objProp._prop == "__special_mc_ba__") {
					new Color(objProp._targ).setTransform({ba:newValue});
				} else if (objProp._prop == "__special_mc_bb__") {
					new Color(objProp._targ).setTransform({bb:newValue});
				} else if (objProp._prop == "__special_mc_aa__") {
					new Color(objProp._targ).setTransform({aa:newValue});
				} else if (objProp._prop == "__special_mc_ab__") {
					new Color(objProp._targ).setTransform({ab:newValue});
				}

				// special hard-coded case for bezierSlideTos
				if (objProp._prop == "__special_bst_t__") {
					var extras = objProp._extras;
					var po = _global.findPointOnCurve (extras.__special_bst_ix__, extras.__special_bst_iy__, extras.__special_bst_cx__, extras.__special_bst_cy__, extras.__special_bst_dx__, extras.__special_bst_dy__, newValue);
					if (objProp._extras.mustRound) {
						// 2.26.27: rounded positions
						objProp._targ._x = Math.round(po.x);
						objProp._targ._y = Math.round(po.y);
					} else {
						// Normal positions
						objProp._targ._x = po.x;
						objProp._targ._y = po.y;
					}
				}

				// special hard-coded case for textfield color...
				if (typeof(objProp._targ) != "movieclip" && (objProp._prop == "__special_text_b__")) {
					// Special case: textfield, B value for textColor value. B being the last one to update, so also set the textfield's textColor
					objProp._targ.textColor = (objProp._targ.__special_text_r__ << 16) + (objProp._targ.__special_text_g__ << 8) + objProp._targ.__special_text_b__;
				}

				// special hard-coded case for sound volume...
				if (objProp._prop == "__special_sound_volume__") objProp._targ.setVolume(newValue);
				if (objProp._prop == "__special_sound_pan__") objProp._targ.setPan(newValue);

				// special hard-coded case for filters
				if (objProp._prop == "__special_blur_x__") 			_global.$setFilterProperty (objProp._targ, "blur_blurX", newValue, objProp._extras);
				if (objProp._prop == "__special_blur_y__") 			_global.$setFilterProperty (objProp._targ, "blur_blurY", newValue, objProp._extras);

				if (objProp._prop == "__special_glow_color__")		_global.$setFilterProperty (objProp._targ, "glow_color", _global.findTweenColor(objProp, tTime), objProp._extras);
				if (objProp._prop == "__special_glow_alpha__")		_global.$setFilterProperty (objProp._targ, "glow_alpha", newValue, objProp._extras);
				if (objProp._prop == "__special_glow_blurX__")		_global.$setFilterProperty (objProp._targ, "glow_blurX", newValue, objProp._extras);
				if (objProp._prop == "__special_glow_blurY__")		_global.$setFilterProperty (objProp._targ, "glow_blurY", newValue, objProp._extras);
				if (objProp._prop == "__special_glow_strength__")	_global.$setFilterProperty (objProp._targ, "glow_strength", newValue, objProp._extras);

				if (objProp._prop == "__special_bevel_distance__")			_global.$setFilterProperty (objProp._targ, "bevel_distance", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_angle__")				_global.$setFilterProperty (objProp._targ, "bevel_angle", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_highlightColor__")	_global.$setFilterProperty (objProp._targ, "bevel_highlightColor", _global.findTweenColor(objProp, tTime), objProp._extras);
				if (objProp._prop == "__special_bevel_highlightAlpha__")	_global.$setFilterProperty (objProp._targ, "bevel_highlightAlpha", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_shadowColor__")		_global.$setFilterProperty (objProp._targ, "bevel_shadowColor", _global.findTweenColor(objProp, tTime), objProp._extras);
				if (objProp._prop == "__special_bevel_shadowAlpha__")		_global.$setFilterProperty (objProp._targ, "bevel_shadowAlpha", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_blurX__")				_global.$setFilterProperty (objProp._targ, "bevel_blurX", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_blurY__")				_global.$setFilterProperty (objProp._targ, "bevel_blurY", newValue, objProp._extras);
				if (objProp._prop == "__special_bevel_strength__")			_global.$setFilterProperty (objProp._targ, "bevel_strength", newValue, objProp._extras);

				// 2.23.26: calls the update event, if any
				if (objProp._targ.onTweenUpdate != undefined) {
					objProp._targ.onTweenUpdate(objProp._prop);
				}

				if (endTime <= tTime) {
					// Past the destiny time: ended.

					// 2.23.26: calls the completion event, if any
					if (objProp._targ.onTweenComplete != undefined) {
						objProp._targ.onTweenComplete(objProp._prop);
					}

					_global.$stopTween (objProp._targ, [objProp._prop], false);

					// Removes from the tweening properties list array. So simpler than the previous versions :)
					// (objProp still exists so it works further on)
					//  this.$_tweenPropList.splice(i,1); // 2.18.17 -- not needed anymore, controlled on _global.stopTween()
					i--;

					if (objProp._callback != undefined) {
						// Calls the _callback function
						if (_global.backwardCallbackTweening) {
							// Old style, for compatibility.
							// IF YOU'RE USING AN OLD VERSION AND WANT BACKWARD COMPATIBILITY, use this line:
							// _global.backwardCallbackTweening = true;
							// ON YOUR MOVIES AFTER (or before) THE #INCLUDE STATEMENT.
							var childMC = objProp._targ.createEmptyMovieClip("__child__", 122344);
							objProp._callback.apply(childMC, null);
							childMC.removeMovieClip();
						} else {
							// New method for 2.12.9: use the mc scope
							// So simpler. I should have done this from the start...
							// ...instead of trying the impossible (using the scope from which the tween was called)
							objProp._callback.apply(objProp._targ, null);
						}
					}
				}
			}
		}
	}
	// Deletes the tween controller movieclip if no tweens are left
	if (this.$_tweenPropList.length == 0) _global.$removeTweenController();
};
ASSetPropFlags(_global, "$updateTween", 1, 0);

_global.$stopTween = function(mtarget, props, wipeFuture) {
	// INTERNAL USE: Removes tweening immediately, deleting it

	// wipeFuture = removes future, non-executed tweenings too
	var tweenPropList = _root.__tweenController__.$_tweenPropList;
	var _prop;
	// Deletes it
	for (var pti in tweenPropList) {
		_prop = tweenPropList[pti]._prop;
		for (var i=0; i<props.length || (i<1 && props == undefined); i++) {
			if (tweenPropList[pti]._targ == mtarget && (_prop == props[i] || props == undefined) && (wipeFuture || tweenPropList[pti]._timeDest+(tweenPropList[pti]._delay*1000) <= getTimer())) {
				// Removes auxiliary vars
				switch (_prop) {
				case "__special_mc_frame__":
				case "__special_mc_ra__":
                case "__special_mc_rb__":
                case "__special_mc_ga__":
                case "__special_mc_gb__":
                case "__special_mc_ba__":
                case "__special_mc_bb__":
                case "__special_mc_aa__":
                case "__special_mc_ab__":
                case "__special_sound_volume__":
				case "__special_bst_t__":
					delete mtarget[_prop];
					break;
				case "__special_text_b__":
					delete mtarget.__special_text_r__;
					delete mtarget.__special_text_g__;
					delete mtarget.__special_text_b__;
					break;
				}
				// Removes from the list
				tweenPropList.splice(pti, 1);
			}
		}
	}
	// Updates the tween count "cache"
	if (props == undefined) {
		delete (mtarget.$_tweenCount);
	} else {
		mtarget.$_tweenCount = 0;
		for (var pti in tweenPropList) {
			if (tweenPropList[pti]._targ == mtarget) mtarget.$_tweenCount++;
		}
		if (mtarget.$_tweenCount == 0) delete mtarget.$_tweenCount;
	}
	// Check if the tween movieclip controller should still exist
	if (tweenPropList.length == 0) {
		// No tweenings remain, remove it
		_global.$removeTweenController();
	}
};
ASSetPropFlags(_global, "$stopTween", 1, 0);

_global.$setFilterProperty = function(mtarget, propName, propValue, extras) {
	// Sets a property for a Flash 8-based filter.
	// This is needed because you can't modify the .filter property directly; you have to re-apply it,
	// and to do so in a non-destructible way (without erasing the previous filters) the array must
	// be cloned...
	var i;
	var applied = false;

	// Creates a copy of .filters 
	var newFilters = [];
	for (var i=0; i<mtarget.filters.length; i++) {
		newFilters.push(mtarget.filters[i]);
	}

	// Finally replaces it. This looks a bit weird, I know...
	// I'll have to rewrite this later. I'm think which would be the best approach; this is too hardcoded.
	if (propName.substr(0, 5) == "blur_") {
		// Blur...
		for (i=0; i<mtarget.filters.length; i++) {
			if (newFilters[i] instanceof flash.filters.BlurFilter) {
				newFilters[i][propName.substr(5)] = propValue;
				if (extras.__special_blur_quality__ != undefined) newFilters[i].quality = extras.__special_blur_quality__; // Applies quality
				applied = true;
				break;
			}
		}