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/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores
* CA 94065 USA or visit www.oracle.com if you need additional information or
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*/
package com.codename1.ui.animations;
import com.codename1.ui.Graphics;
import com.codename1.ui.Image;
import com.codename1.ui.util.Resources;
/**
* An animation object is an element within the timeline that has a visibility state
* for rendering at a given point in time. E.g. the object can be queried of its position
* and render itself for any time.
*
* @author Shai Almog
*/
public final class AnimationObject {
/**
* Used to define the motion type used when manipulating an animation property
*/
public static final int MOTION_TYPE_SPLINE = 2;
/**
* Used to define the motion type used when manipulating an animation property
*/
public static final int MOTION_TYPE_LINEAR = 1;
// these are package protected for the resource editor
String imageName;
Resources res;
Image img;
Image[] frames;
Motion motionX;
Motion motionY;
Motion orientation;
Motion width;
Motion height;
Motion opacity;
int frameWidth;
int frameHeight;
int frameDelay = -1;
private boolean framesInitialized = true;
private int startTime = -1;
private int endTime = -1;
private AnimationObject() {}
/**
* Creates a copy of the given animation object
*
* @return a new instance of the Animation object with the same state
*/
public AnimationObject copy() {
AnimationObject o = new AnimationObject();
o.imageName = imageName;
o.res = res;
o.img = img;
o.frames = frames;
o.motionX = motionX;
o.motionY = motionY;
o.orientation = orientation;
o.width = width;
o.height = height;
o.opacity = opacity;
o.frameWidth = frameWidth;
o.frameHeight = frameHeight;
o.frameDelay = frameDelay;
o.framesInitialized = framesInitialized;
o.startTime = startTime;
o.endTime = endTime;
return o;
}
void lock() {
if(img != null) {
img.lock();
}
}
void unlock() {
if(img != null) {
img.unlock();
}
}
/**
* Creates an animation object instance that can define the animation properties for an image
*
* @param img the image to animate within the timeline
* @param x position of the animation
* @param y position of the animation
* @return new animation object
*/
public static AnimationObject createAnimationImage(Image img, int x, int y) {
AnimationObject o = new AnimationObject();
o.img = img;
o.motionX = Motion.createLinearMotion(x, x, 1);
o.motionX.setStartTime(Long.MAX_VALUE);
o.motionY = Motion.createLinearMotion(y, y, 1);
o.motionY.setStartTime(Long.MAX_VALUE);
return o;
}
/**
* Defines the frames of the animation if this is a frame changing animation (e.g.
* a sprite of a walking person).
* Notice that this method must not be invoked more than once or after the image
* was initilized
*
* @param frameWidth the width of the frame within the image object
* @param frameHeight the height of the frame within the image object
* @param frameDelay the delay of the frame
*/
public void defineFrames(int frameWidth, int frameHeight, int frameDelay) {
this.frameWidth = frameWidth;
this.frameHeight = frameHeight;
this.frameDelay = frameDelay;
framesInitialized = false;
}
/**
* Creates an animation object instance that can define the animation properties for an image.
* This version of the method is useful while a resource file is in the process of being loaded
* and not all images are in place. Loading will finish implicitly when the image is first used.
*
* @param imageName the image to animate within the timeline
* @param res the resources file from which the image should be fetched.
* @param x position of the animation
* @param y position of the animation
* @return new animation object
*/
public static AnimationObject createAnimationImage(String imageName, Resources res, int x, int y) {
AnimationObject o = new AnimationObject();
o.imageName = imageName;
o.res = res;
o.motionX = Motion.createLinearMotion(x, x, 1);
o.motionX.setStartTime(Long.MAX_VALUE);
o.motionY = Motion.createLinearMotion(y, y, 1);
o.motionY.setStartTime(Long.MAX_VALUE);
return o;
}
/**
* @return the img
*/
Image getImage() {
if(img == null && res != null) {
img = res.getImage(imageName);
// can happen due to a race condition we try to fail "gracefully"
if(img == null) {
return null;
}
res = null;
}
if(frameDelay > -1) {
if(!framesInitialized) {
// break up the image to smaller images
frames = new Image[img.getWidth() / frameWidth * img.getHeight() / frameHeight];
int currentX = 0;
int currentY = 0;
int flen = frames.length;
for(int iter = 0 ; iter < flen ; iter++) {
frames[iter] = img.subImage(currentX, currentY, frameWidth, frameHeight, true);
currentX += frameWidth;
if(currentX + frameWidth > img.getWidth()) {
currentX = 0;
currentY += frameHeight;
}
}
// if we are on a device we no longer need the img from now on and can use
// only the frames. However, in the resource editor we still need the image instance
// for internal references
if(System.getProperty("microedition.platform") != null) {
img = null;
}
}
long time = motionX.getCurrentMotionTime();
int frameCount = Math.max(1, frames.length);
int frame = Math.min(Math.max(0, (int)((time / Math.max(1, frameDelay)) % frameCount)), frameCount - 1);
return frames[frame];
}
return img;
}
private void setTimeNotNull(Motion m, int time) {
if(m != null) {
m.setCurrentMotionTime(time);
}
}
void setTime(int time) {
motionX.setCurrentMotionTime(time);
motionY.setCurrentMotionTime(time);
setTimeNotNull(orientation, time);
setTimeNotNull(width, time);
setTimeNotNull(height, time);
setTimeNotNull(opacity, time);
}
/**
* Defines a motion on the x axis starting at the given time/value and ending at the given position
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineMotionX(int motionType, int startTime, int duration, int start, int end) {
motionX = createMotion(motionType, startTime, duration, start, end);
}
/**
* Defines a motion on the y axis starting at the given time/value and ending at the given position
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineMotionY(int motionType, int startTime, int duration, int start, int end) {
motionY = createMotion(motionType, startTime, duration, start, end);
}
/**
* Defines a rotation animation starting at the given time/value and ending at the given position
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineOrientation(int motionType, int startTime, int duration, int start, int end) {
orientation = createMotion(motionType, startTime, duration, start, end);
}
/**
* Defines opacity (translucency) starting at the given time/value and ending at the given position.
* Values should rance from 0 (transparent) to 255 (opaque).
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineOpacity(int motionType, int startTime, int duration, int start, int end) {
opacity = createMotion(motionType, startTime, duration, start, end);
}
/**
* Defines the width of the object starting at the given time/value and ending at the given position
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineWidth(int motionType, int startTime, int duration, int start, int end) {
width = createMotion(motionType, startTime, duration, start, end);
}
/**
* Defines the height of the object starting at the given time/value and ending at the given position
*
* @param motionType the type of the motion (spline/linear)
* @param startTime the start time for the motion within the timeline timeframe
* @param duration the duration of the motion
* @param start the starting position (the value before startTime)
* @param end the ending position for the property (the value after endTime)
*/
public void defineHeight(int motionType, int startTime, int duration, int start, int end) {
height = createMotion(motionType, startTime, duration, start, end);
}
private Motion createMotion(int motionType, int startTime, int duration, int start, int end) {
Motion m;
switch(motionType) {
case MOTION_TYPE_LINEAR:
m = Motion.createLinearMotion(start, end, startTime + duration);
break;
case MOTION_TYPE_SPLINE:
m = Motion.createSplineMotion(start, end, startTime + duration);
break;
default:
throw new IllegalArgumentException("Motion type: " + motionType);
}
m.setStartTime(startTime);
return m;
}
int getX() {
return motionX.getValue();
}
/**
* @return the motionY
*/
int getY() {
return motionY.getValue();
}
/**
* @return the orientation
*/
int getOrientation() {
if(orientation == null) {
return 0;
}
return orientation.getValue();
}
/**
* @return the width
*/
int getWidth() {
if(width == null) {
if(getImage() != null) {
return getImage().getWidth();
}
return 20;
}
return width.getValue();
}
/**
* @return the height
*/
int getHeight() {
if(height == null) {
if(getImage() != null) {
return getImage().getHeight();
}
return 20;
}
return height.getValue();
}
/**
* @return the opacity
*/
int getOpacity() {
if(opacity == null) {
return 255;
}
return opacity.getValue();
}
void draw(Graphics g, float scaleX, float scaleY) {
int o = getOpacity();
if(o == 0) {
return;
}
Image i = getImage();
// this can happen due to a race condition, mostly in the resource editor which
// works in a separate thread
if(i == null) {
return;
}
int scaledImageW = (int)(getWidth() * scaleX);
int scaledImageH = (int)(getHeight() * scaleY);
if(scaledImageH < 1 || scaledImageW < 1) {
return;
}
i = getImage().scaled(scaledImageW, scaledImageH);
if(o != 255) {
i = i.modifyAlphaWithTranslucency((byte)o);
}
int r = getOrientation();
if(r != 0) {
i = i.rotate(r);
}
int x = getX();
int y = getY();
x = (int)(x * scaleX);
y = (int)(y * scaleY);
g.drawImage(i, x, y);
}
/**
* The start time of the animation determines when we start actually drawing
* the animation object. -1 means the duration of the entire animation.
*
* @return the startTime in timeline time
*/
public int getStartTime() {
return startTime;
}
/**
* The start time of the animation determines when we start actually drawing
* the animation object. -1 means the duration of the entire animation.
*
* @param startTime the startTime to set
*/
public void setStartTime(int startTime) {
this.startTime = startTime;
}
/**
* The end time of the animation determines when we finish actually drawing
* the animation object. -1 means the duration of the entire animation.
*
* @return the endTime in timeline time
*/
public int getEndTime() {
return endTime;
}
/**
* The end time of the animation determines when we finish actually drawing
* the animation object. -1 means the duration of the entire animation.
*
* @param endTime the endTime to set
*/
public void setEndTime(int endTime) {
this.endTime = endTime;
}
}
