the following view contains three types
1. Barral view
2.Sphere View
3.Flat view
View activity
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Canvas;
import android.graphics.Color;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.ScaleAnimation;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class TagCloudView extends RelativeLayout {
RelativeLayout navigation_bar;
TextView mTextView1;
TagCloudType tagCloudType = TagCloudType.SPHERE;
private String TAG = "TagCloudView";
public TagCloudView(Context mContext, int width, int height, List<Tag> tagList) {
this(mContext, width, height, tagList, TagCloud.TEXT_SIZE_MIN, TagCloud.TEXT_SIZE_MAX, 2); // default for min/max
// text size
}
public TagCloudView(Context mContext, int width, int height, List<Tag> tagList, int textSizeMin, int textSizeMax, int scrollSpeed) {
super(mContext);
this.mContext = mContext;
this.textSizeMin = textSizeMin;
this.textSizeMax = textSizeMax;
tspeed = scrollSpeed;
x = getFromPreferences("TagCloudView_x", 0.0f);
y = getFromPreferences("TagCloudView_y", 0.0f);
// set the center of the sphere on center of our screen:
centerX = width / 2;
centerY = height / 2;
radius = Math.min(centerX * 0.95f, centerY * 0.95f); // use 95% of
// screen
// since we set tag margins from left of screen, we shift the whole tags
// to left so that
// it looks more realistic and symmetric relative to center of screen in
// X direction
shiftLeft = (int) (Math.min(centerX * 0.15f, centerY * 0.15f));
// initialize the TagCloud from a list of tags
// Filter() func. screens tagList and ignores Tags with same text (Case
// Insensitive)
mTagCloud = new TagCloud(Filter(tagList), (int) radius, textSizeMin, textSizeMax);
float[] tempColor1 = {1.0f, 1.0f, 1.0f, 1}; // rgb Alpha
// {1f,0f,0f,1} red {0.3882f,0.21568f,0.0f,1} orange
// {0.9412f,0.7686f,0.2f,1} light orange
float[] tempColor2 = {0.6f, 0.6f, 0.6f, 1}; // rgb Alpha
// {0f,0f,1f,1} blue
// {0.1294f,0.1294f,0.1294f,1}
// grey
// {0.9412f,0.7686f,0.2f,1}
// light orange
mTagCloud.setTagColor1(tempColor1);// higher color
mTagCloud.setTagColor2(tempColor2);// lower color
mTagCloud.setRadius((int) radius);
mTagCloud.create(true); // to put each Tag at its correct initial
// location
// update the transparency/scale of tags
mTagCloud.setAngleX(mAngleX);
mTagCloud.setAngleY(mAngleY);
mTagCloud.update();
mTextView = new ArrayList<TextView>();
mParams = new ArrayList<LayoutParams>();
// Now Draw the 3D objects: for all the tags in the TagCloud
Iterator it = mTagCloud.iterator();
Tag tempTag;
int i = 0;
while (it.hasNext()) {
tempTag = (Tag) it.next();
tempTag.setParamNo(i); // store the parameter No. related to this
// tag
mTextView.add(new TextView(this.mContext));
mTextView.get(i).setText(tempTag.getText());
mTextView.get(i).setTag(tempTag);
mTextView.get(i).setShadowLayer(3, 1, 1, Color.BLACK);
mParams.add(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_LEFT);
mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_TOP);
mParams.get(i).setMargins((int) (centerX - shiftLeft + tempTag.getLoc2DX()), (int) (centerY + tempTag.getLoc2DY()), 0, 0);
mTextView.get(i).setLayoutParams(mParams.get(i));
mTextView.get(i).setSingleLine(true);
int mergedColor = Color.argb((int) (tempTag.getAlpha() * 255), (int) (tempTag.getColorR() * 255), (int) (tempTag.getColorG() * 255),
(int) (tempTag.getColorB() * 255));
mTextView.get(i).setTextColor(mergedColor);
mTextView.get(i).setTextSize(22);
addView(mTextView.get(i));
mTextView.get(i).setOnClickListener(OnTagClickListener(tempTag.getUrl()));
i++;
}
}
public void setTagCloudType(TagCloudType type) {
tagCloudType = type;
handler.removeCallbacks(animatorSpherical);
handler.removeCallbacks(animatorBarrel);
if (tagCloudType == TagCloudType.SPHERE) {
updateViewSpherical(x, y, .2f);
// handler.post(animatorSpherical);
} else {
postInvalidate();
}
}
public enum TagCloudType {
SPHERE, BARREL, FLAT
}
float x = 0;
float y = 0;
// int textColor = Color.WHITE;
float changerY = 0.1f;
float changerX = 0.1f;
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
}
@Override
protected void dispatchDraw(Canvas canvas) {
if(tagCloudType == TagCloudType.SPHERE){
updateViewSpherical(x, y, .2f);
}
else if (tagCloudType == TagCloudType.BARREL) {
updateViewBarrel();
} else if (tagCloudType == TagCloudType.FLAT) {
updateViewFlat();
}
super.dispatchDraw(canvas);
}
Handler handler = new Handler();
boolean isAnimating = true;
Runnable animatorSpherical = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if (isAnimating) {
Log.e("x",""+x);
Log.e("y",""+y);
Log.e("changerX",""+changerX);
Log.e("changerY",""+changerY);
Log.e("tspeed",""+tspeed);
x = x + changerX;
y = y + changerY;
Log.d("TAG", "animatorSpherical x=" + x + ";changerX=" + changerX + " y=" + y + "; changerY=" + changerY);
// updateViewSpherical(x, y, tspeed);
// updateViewSpherical(x, y, 0.15f);
}
}
};
int timeSpherical = 500;
int timeCircular = 500;
public void addTag(Tag newTag) {
mTagCloud.add(newTag);
int i = mTextView.size();
newTag.setParamNo(i);
mTextView.add(new TextView(this.mContext));
mTextView.get(i).setText(newTag.getText());
mTextView.get(i).setTag(newTag);
mTextView.get(i).setShadowLayer(3, 1, 1, Color.BLACK);
mParams.add(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_LEFT);
mParams.get(i).addRule(RelativeLayout.ALIGN_PARENT_TOP);
mParams.get(i).setMargins((int) (centerX - shiftLeft + newTag.getLoc2DX()), (int) (centerY + newTag.getLoc2DY()), 0, 0);
mTextView.get(i).setLayoutParams(mParams.get(i));
mTextView.get(i).setSingleLine(true);
int mergedColor = Color.argb((int) (newTag.getAlpha() * 255), (int) (newTag.getColorR() * 255), (int) (newTag.getColorG() * 255),
(int) (newTag.getColorB() * 255));
mTextView.get(i).setTextColor(mergedColor);
mTextView.get(i).setTextSize((int) (newTag.getTextSize() * newTag.getScale()));
addView(mTextView.get(i));
mTextView.get(i).setOnClickListener(OnTagClickListener(newTag.getUrl()));
}
private float scroll = 0;
int changer = -2;
Runnable animatorBarrel = new Runnable() {
@Override
public void run() {
scroll = scroll + changer;
postInvalidate();
}
};
protected void updateViewBarrel() {
float radius = centerY * 0.80f;
// float radius = getHeight()/3f ;
if(scroll<-10000){
scroll = -600;
}
if(scroll>10000){
scroll = 600;
}
float deltaY = (centerY - radius) / 2;
for (int i = 0; i < getChildCount(); i++) {
float t = i + scroll / getHeight();
double theta = Math.PI * 2 * t / getChildCount();
// float y = (float) (radius * Math.cos(theta)); // parametric circle equation
// float z = (float) (radius * Math.sin(theta));
float y = (float) (radius * Math.cos(Math.PI * 2 * t / getChildCount())); // parametric circle equation
float z = (float) (radius * Math.sin(Math.PI * 2 * t / getChildCount()));
float textSize = (radius + z) / radius / 2 * 20 + 16;
float alpha = (radius + z) / radius / 2 * 127 + 128;
View view = getChildAt(i);
int left = getWidth() / 2 - view.getWidth() / 2;
int top = (int) ((getHeight() / 2) + y);
int right = left + view.getWidth();
int bottom = top + view.getHeight();
int color = (int) (t * 10);
if (view instanceof TextView) {
TextView textView = (TextView) view;
//textView.setTextSize(textSize);
//textView.setAlpha(alpha);
setAlphaAnimation(textView, alpha / 255);
textView.setTextColor(Color.WHITE);
LayoutParams params = (LayoutParams) textView.getLayoutParams();
params.setMargins(left, top, 0, 0);
textView.setLayoutParams(params);
// Log.d(TAG, "animatorBarrel text=" + textView.getText() + "; z=" + z + "; scroll=" + scroll);
}
// Log.e(TAG, "animatorBarrel scroll=" + scroll + "; theta=" + theta + "; alpha=" + alpha + "; y=" + y + "; z=" + z + "; radius=" + radius + "; i=" + i);
//view.layout(left, top, right, bottom);
}
// view.scr
//Log.e()
Log.e("invalidate","radius"+radius+",centerY:"+centerY+",scroll:"+scroll+",getheight:"+getHeight());
Log.e("invalidate1","centery"+centerY);
Log.e("invalidate2","scroll"+scroll);
Log.e("invalidate3","getheight"+getHeight());
// float r = getHeight() / 3;
// float t = i + scroll / getHeight();
// float y = (float) (r * Math.cos(Math.PI * 2 * t / getChildCount())); // parametric circle equation
// float z = (float) (r * Math.sin(Math.PI * 2 * t / getChildCount()));
// paint.setTextSize((r + z) / r/2 * 40 + 20); // magic values, change to something better
// paint.setAlpha((int) ((r + z) / r/2 * 127 + 128));
// canvas.drawText(tags[i], getWidth() / 2, getHeight() / 2 + y, paint);
// mTagCloud.setAngleX(90);
// mTagCloud.setAngleY(180);
// mTagCloud.update();
// Iterator it = mTagCloud.iterator();
// Tag tempTag;
// int i=0;
// while (it.hasNext()) {
// tempTag = (Tag) it.next();
// float t = i + scroll / getHeight();
// double theta = Math.PI * 2 * t / getChildCount();
// float y = (float) (radius * Math.cos(theta)); // parametric circle equation
// float z = (float) (radius * Math.sin(theta));
// float textSize = (radius + z) / radius / 2 * 32 + 16;
// float alpha = (radius + z) / radius / 2 * 127 + 128;
//
// TextView textView = mTextView.get(tempTag.getParamNo());
// int left = (int) (centerX - textView.getWidth() / 2);
// int top = (int) ((getHeight() / 2) + y);
// int right = left + textView.getWidth();
// int bottom = top + textView.getHeight();
// int color = (int) (t * 10);
// mParams.get(tempTag.getParamNo()).setMargins(left,top,0,0);
// textView.setTextSize(textSize);
// textView.setTextColor(Color.WHITE);
// textView.bringToFront();
// i++;
// }
handler.postDelayed(animatorBarrel, timeCircular);
}
protected void updateViewSpherical(float x, float y, float tspeed) {
// TODO Auto-generated method stub
// rotate elements depending on how far the selection point is from
// center of cloud
float dx = x - centerX;
float dy = y - centerY;
mAngleX = (dy / radius) * tspeed * TOUCH_SCALE_FACTOR;
mAngleY = (-dx / radius) * tspeed * TOUCH_SCALE_FACTOR;
mTagCloud.setAngleX(mAngleX);
mTagCloud.setAngleY(mAngleY);
mTagCloud.update();
Iterator it = mTagCloud.iterator();
Tag tempTag;
while (it.hasNext()) {
tempTag = (Tag) it.next();
mParams.get(tempTag.getParamNo()).setMargins((int) (centerX - shiftLeft + tempTag.getLoc2DX()), (int) (centerY + tempTag.getLoc2DY()),
0, 0);
Log.e("textsizwww",""+(int) (tempTag.getTextSize() * tempTag.getScale()));
// mTextView.get(tempTag.getParamNo()).setTextSize((int) (tempTag.getTextSize() * tempTag.getScale()));
int mergedColor = Color.argb((int) (tempTag.getAlpha() * 255), (int) (tempTag.getColorR() * 255), (int) (tempTag.getColorG() * 255),
(int) (tempTag.getColorB() * 255));
mTextView.get(tempTag.getParamNo()).setTextColor(mergedColor);
mTextView.get(tempTag.getParamNo()).bringToFront();
}
}
public boolean Replace(Tag newTag, String oldTagText) {
boolean result = false;
int j = mTagCloud.Replace(newTag, oldTagText);
if (j >= 0) { // then oldTagText was found and replaced with newTag data
Iterator it = mTagCloud.iterator();
Tag tempTag;
while (it.hasNext()) {
tempTag = (Tag) it.next();
mParams.get(tempTag.getParamNo()).setMargins((int) (centerX - shiftLeft + tempTag.getLoc2DX()),
(int) (centerY + tempTag.getLoc2DY()), 0, 0);
mTextView.get(tempTag.getParamNo()).setText(tempTag.getText());
mTextView.get(tempTag.getParamNo()).setTextSize((int) (tempTag.getTextSize() * tempTag.getScale()));
int mergedColor = Color.argb((int) (tempTag.getAlpha() * 255), (int) (tempTag.getColorR() * 255),
(int) (tempTag.getColorG() * 255), (int) (tempTag.getColorB() * 255));
mTextView.get(tempTag.getParamNo()).setTextColor(mergedColor);
mTextView.get(tempTag.getParamNo()).bringToFront();
}
result = true;
}
return result;
}
public void reset() {
mTagCloud.reset();
Iterator it = mTagCloud.iterator();
Tag tempTag;
while (it.hasNext()) {
tempTag = (Tag) it.next();
mParams.get(tempTag.getParamNo()).setMargins((int) (centerX - shiftLeft + tempTag.getLoc2DX()), (int) (centerY + tempTag.getLoc2DY()),
0, 0);
mTextView.get(tempTag.getParamNo()).setTextSize((int) (tempTag.getTextSize() * tempTag.getScale()));
int mergedColor = Color.argb((int) (tempTag.getAlpha() * 255), (int) (tempTag.getColorR() * 255), (int) (tempTag.getColorG() * 255),
(int) (tempTag.getColorB() * 255));
mTextView.get(tempTag.getParamNo()).setTextColor(mergedColor);
mTextView.get(tempTag.getParamNo()).bringToFront();
}
}
@Override
public boolean onTrackballEvent(MotionEvent e) {
if (tagCloudType == TagCloudType.SPHERE) {
float x = e.getX();
float y = e.getY();
if (e.getY() != prevY) {
if (e.getY() - prevY > 0) {
changerY = 0 - Math.abs(changerY);
} else {
changerY = Math.abs(changerY);
}
}
if (e.getX() != prevX) {
if (e.getX() - prevX > 0) {
changerX = 0 - Math.abs(changerX);
} else {
changerX = Math.abs(changerX);
}
}
updateViewSpherical(-x, y, tspeed);
} else if (tagCloudType == TagCloudType.BARREL) {
if (e.getAction() != MotionEvent.ACTION_DOWN) {
float diff = e.getY() - prevY;
scroll = scroll - diff * 4; // only one plane
if (e.getY() != prevY) {
if (e.getY() - prevY > 0) {
changer = 0 - Math.abs(changer);
} else {
changer = Math.abs(changer);
}
}
Log.e("onTrackball", "scroll=" + scroll + "; prevY=" + prevY + "; y=" + e.getY() + "; changer=" + changer);
}
prevY = e.getY();
postInvalidate();
}
return true;
}
float prevX = 0.0f;
float prevY = 0.0f;
@Override
public boolean onTouchEvent(MotionEvent e) {
if (tagCloudType == TagCloudType.SPHERE) {
float x = e.getX();
float y = e.getY();
switch (e.getAction()) {
case MotionEvent.ACTION_DOWN:
isAnimating = false;
break;
case MotionEvent.ACTION_MOVE:
Log.d("TAG", "x=" + x + ";changerX=" + changerX + " y=" + y + "; changerY=" + changerY);
if (e.getY() != prevY) {
if (e.getY() - prevY > 0) {
changerY = 0 - Math.abs(changerY);
} else {
changerY = Math.abs(changerY);
}
}
if (e.getX() != prevX) {
if (e.getX() - prevX > 0) {
changerX = 0 - Math.abs(changerX);
} else {
changerX = Math.abs(changerX);
}
}
updateViewSpherical(x, y, tspeed * 2);
break;
case MotionEvent.ACTION_UP:
isAnimating = true;
break;
/*
* case MotionEvent.ACTION_UP: //now it is clicked!!!! dx = x - centerX;
* dy = y - centerY; break;
*/
}
this.y = prevY = e.getY();
this.x = prevX = e.getX();
} else if (tagCloudType == TagCloudType.BARREL) {
if (e.getAction() != MotionEvent.ACTION_DOWN) {
Log.e("prevY1",""+prevY);
float diff = e.getY() - prevY;
Log.e("prevY2",""+diff);
scroll = scroll - diff *4 ; // only one plane
if (e.getY() != prevY) {
if (e.getY() - prevY < 0) {
changer = 0 - Math.abs(changer);
} else {
changer = Math.abs(changer);
}
}
Log.e("ontouch", "scroll=" + scroll + "; prevY=" + prevY + "; y=" + e.getY() + "; changer=" + changer);
}
//changer = Math.abs(changer);
prevY = e.getY();
//updateViewBarrel();
postInvalidate();
}
return true;
}
private void setAlphaAnimation(View view, float alpha) {
// TODO Auto-generated method stub
AnimationSet set = new AnimationSet(true);
Animation animation = new AlphaAnimation(alpha, alpha);
set.addAnimation(animation);
set.setDuration(0);
set.setFillAfter(true);
view.setAnimation(set);
set.start();
}
private void setScaleAnimation(View view) {
// TODO Auto-generated method stub
ScaleAnimation scaleAnimation = new ScaleAnimation(1.0f, 5.0f, 1.0f, 5.0f, 50.0f, 50.0f);
scaleAnimation.setDuration(500);
scaleAnimation.setFillAfter(false);
view.startAnimation(scaleAnimation);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
super.onLayout(changed, l, t, r, b);
if (tagCloudType == TagCloudType.SPHERE) {
handler.postDelayed(animatorSpherical, timeSpherical);
} else if (tagCloudType == TagCloudType.BARREL) {
updateViewBarrel();
} else if (tagCloudType == TagCloudType.FLAT) {
updateViewFlat();
}
}
private void updateViewFlat() {
float top = 10;
float left = 0;
for (int i = getChildCount() - 1; i >= 0; i--) {
View view = getChildAt(i);
//top = (int) ((getHeight() / 2) + y);
if (view instanceof TextView) {
TextView textView = (TextView) view;
//textView.setTextColor(Color.WHITE);
left = left + 20;
LayoutParams params = (LayoutParams) textView.getLayoutParams();
params.setMargins((int) left, (int) top, 0, 0);
textView.setLayoutParams(params);
}
left = left + view.getWidth();
if (left >= getWidth()) {
left = 0;
top = top + view.getHeight();
} else {
if (i - 1 >= 0) {
top = top + (view.getHeight() - getChildAt(i - 1).getHeight());
}
}
if (i - 1 >= 0) {
if (getWidth() - left < getChildAt(i - 1).getWidth()) {
left = 0;
top = top + view.getHeight();
}
}
Log.e("updateview", "left=" + left + "; top=" + top);
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
onTouchEvent(ev);
return false;
}
String urlMaker(String url) {
if ((url.substring(0, 7).equalsIgnoreCase("http://")) || (url.substring(0, 8).equalsIgnoreCase("https://")))
return url;
else
return "http://" + url;
}
// the filter function makes sure that there all elements are having unique
// Text field:
List<Tag> Filter(List<Tag> tagList) {
// current implementation is O(n^2) but since the number of tags are not
// that many,
// it is acceptable.
List<Tag> tempTagList = new ArrayList();
Iterator itr = tagList.iterator();
Iterator itrInternal;
Tag tempTag1, tempTag2;
// for all elements of TagList
while (itr.hasNext()) {
tempTag1 = (Tag) (itr.next());
boolean found = false;
// go over all elements of temoTagList
itrInternal = tempTagList.iterator();
while (itrInternal.hasNext()) {
tempTag2 = (Tag) (itrInternal.next());
if (tempTag2.getText().equalsIgnoreCase(tempTag1.getText())) {
found = true;
break;
}
}
if (found == false)
tempTagList.add(tempTag1);
}
return tempTagList;
}
// for handling the click on the tags
// onclick open the tag url in a new window. Back button will bring you back
// to TagCloud
OnClickListener OnTagClickListener(final String url) {
return new OnClickListener() {
@Override
public void onClick(final View v) {
// we now have url from main code
/*
* Uri uri = Uri.parse(urlMaker(url)); // just open a new intent
* and set the content to search for the // url
* mContext.startActivity(new Intent(Intent.ACTION_VIEW, uri));
*/
saveInPreferences("TagCloudView_x", x);
saveInPreferences("TagCloudView_y", y);
setScaleAnimation(v);
final Tag tag = (Tag) v.getTag();
if (v instanceof TextView) {
TextView textView = (TextView) v;
textView.setTextColor(Color.RED);
textView.postDelayed(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if (onTagClickListener != null) {
onTagClickListener.onTagClick(v, tag);
}
}
}, 500);
}
}
};
}
@Override
protected void onDetachedFromWindow() {
// TODO Auto-generated method stub
saveInPreferences("TagCloudView_x", x);
saveInPreferences("TagCloudView_y", y);
super.onDetachedFromWindow();
}
public float getFromPreferences(String name, float fDefault) {
// TODO Auto-generated method stub
SharedPreferences selectPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
return selectPreferences.getFloat(name, fDefault);
}
public void saveInPreferences(String name, float fData) {
// TODO Auto-generated method stub
SharedPreferences selectPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
SharedPreferences.Editor prefsEditor = selectPreferences.edit();
prefsEditor.putFloat(name, fData);
prefsEditor.commit();
}
OnTagClickListener onTagClickListener;
public void setOnTagClickListener(OnTagClickListener onTagClickListener) {
this.onTagClickListener = onTagClickListener;
}
public abstract interface OnTagClickListener {
public void onTagClick(View view, Tag tag);
}
private final float TOUCH_SCALE_FACTOR = .8f;
private final float TRACKBALL_SCALE_FACTOR = 10;
private float tspeed;
private TagCloud mTagCloud;
private float mAngleX = 0;
private float mAngleY = 0;
private float centerX, centerY;
private float radius;
private Context mContext;
private int textSizeMin, textSizeMax;
private List<TextView> mTextView;
private List<LayoutParams> mParams;
private int shiftLeft;
}
here is the git hub link
https://github.com/sharathyadhav1/tag_cloud_sphere_barel_plain
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