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Judul : Text curve clockwise and anticlockwise in android
link : Text curve clockwise and anticlockwise in android
Anda sekarang membaca artikel Text curve clockwise and anticlockwise in android dengan alamat link https://googleandroiddevelopertutorial.blogspot.com/2016/10/text-curve-clockwise-and-anticlockwise.html
Judul : Text curve clockwise and anticlockwise in android
link : Text curve clockwise and anticlockwise in android
Text curve clockwise and anticlockwise in android
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.RequiresApi;
import android.util.Log;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import com.ob.virtualproject.R;
public class AndroidDrawActivity extends Activity implements SeekBar.OnSeekBarChangeListener {
// http://stackoverflow.com/questions/19043452/how-to-alter-the-output-of-android-canvas-drawtextonpath
private static final String TAG = AndroidDrawActivity.class.getName();
int mRadius;
private LinearLayout llMainFrame;
private MyView myView;
private boolean mIsClock = true;
private int rotation_degree = 180;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.text_curver_layout);
SeekBar seekBar = (SeekBar) findViewById(R.id.seekBar);
seekBar.setOnSeekBarChangeListener(this);
mRadius = seekBar.getProgress();
llMainFrame = (LinearLayout) findViewById(R.id.tcl_llMainFrame);
myView = new MyView(this);
myView.setDrawParams();
llMainFrame.addView(myView);
}
@SuppressLint("LongLogTag")
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
Log.d(TAG, "onProgressChanged:progress= "+progress);
// mRadius = seekBar.getProgress();
mRadius = seekBar.getProgress() - 360;
if(mRadius<=0 && mRadius>=-8){
mRadius = -8;
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
llMainFrame.removeAllViews();
myView.setDrawParams();
llMainFrame.addView(myView);
}
public class MyView extends View {
private int left;
private int top;
private int right;
private int bottom;
private RectF oval;
private Path mArc;
private Paint mPaintText;
// private String message ="Hemant Vitthalbhai Patel Android Developer at Office beacon, Vadodara";
private String message ="Hemant Vitthalbhai Patel Android ";
private Path textPath;
public MyView(Context context) {
super(context);
}
public void setDrawParams(){
Log.d(TAG, "mRadius: "+ mRadius);
Log.d(TAG, "right: "+right);
Log.d(TAG, "bottom: "+bottom);
mPaintText = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaintText.setStyle(Paint.Style.FILL_AND_STROKE);
mPaintText.setColor(Color.RED);
mPaintText.setTextSize(50f);
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
textPath = new Path();
Paint tmpPaint = new Paint();
Paint tmpStrokePaint = new Paint();
int offsetX = 0;
int offsetY = 0;
int x = offsetX;
int y = offsetY;
String t;
float kerning = 1.0f;
float scale = 1.0f;
float kerningValue;
int textOffsetX = x;
int textOffsetY = y;
float innerOffsetX = 0.0f;
float innerOffsetY = 0.0f;
float totalWidth = ((float) getWidth()) * scale;
tmpPaint.setAntiAlias(true);
tmpPaint.setColor(Color.BLACK);
tmpPaint.setTextSize(50 * scale);
tmpPaint.setStyle(Paint.Style.FILL);
tmpPaint.setShader(null);
tmpStrokePaint.setAntiAlias(true);
tmpStrokePaint.setTextSize(tmpPaint.getTextSize());
tmpStrokePaint.setTypeface(tmpPaint.getTypeface());
tmpStrokePaint.setTextAlign(tmpPaint.getTextAlign());
tmpStrokePaint.setColor(Color.RED);
tmpStrokePaint.setStrokeWidth(2 * scale);
int startAngle;
t = message.replace("\n", " ");
int aCurvingAngle = mRadius + 6;
if (mRadius >= 360) {
aCurvingAngle = 359;
} else if (mRadius <= -360) {
aCurvingAngle = -359;
}
kerningValue = 0.0f;
if (kerning != 0.0f) {
kerningValue = ((kerning * 20.0f) * scale) / ((float) (t.length() - 1));
}
float hOffset = 0.0f;
float lineWidth = tmpPaint.measureText(t) + (((float) (t.length() - 1)) * kerningValue);
if (tmpStrokePaint.getStrokeWidth() > 0.0f) {
lineWidth += tmpStrokePaint.getStrokeWidth() * 2.0f;
hOffset = 0.0f + tmpStrokePaint.getStrokeWidth();
}
float diameter = (float) (((double) ((360.0f * lineWidth) / ((float) Math.abs(aCurvingAngle)))) / 3.141592653589793d);
textOffsetX = offsetX;
textOffsetY = offsetY;
int baseWidth = 1;
int baseHeight = 1;
innerOffsetX = (((float) (getWidth() - baseWidth)) * 0.5f) * scale;
innerOffsetY = (((float) (getHeight() - baseHeight)) * 0.5f) * scale;
textOffsetX += (int) innerOffsetX;
textOffsetY += (int) innerOffsetY;
float left = ((float) textOffsetX) + (((totalWidth - (2.0f * innerOffsetX)) - diameter) / 2.0f);
float top = (float) textOffsetY;
// aCurvingAngle = aCurvingAngle * (-1); // Reverse curve
if (aCurvingAngle > 0) {
startAngle = 270;
} else {
top += (((((float) getHeight()) * scale) - (2.0f * innerOffsetY)) - diameter) - 10;
if (tmpStrokePaint.getStrokeWidth() > 0.0f) {
top -= tmpStrokePaint.getStrokeWidth();
}
startAngle = 90;
}
this.textPath.reset();
Paint paint = new Paint();
paint.setColor(Color.YELLOW);
canvas.drawRect(new RectF(left, top, left + diameter, top + diameter),paint);
RectF rectf = new RectF(left, top, left + diameter, top + diameter);
this.textPath.addArc(rectf, (float) (startAngle - (aCurvingAngle / 2)), (float) aCurvingAngle);
canvas.drawTextOnPath(t, this.textPath, hOffset, 0.0f, tmpPaint);
/*int j;
for (j = 0; j < t.length(); j++) {
String c = t.substring(j, j + 1);
if (tmpStrokePaint.getStrokeWidth() > 0.0f) {
// canvas.drawTextOnPath(c, this.textPath, hOffset, 0.0f, tmpStrokePaint);
}
canvas.drawTextOnPath(c, this.textPath, hOffset, 0.0f, tmpPaint);
hOffset += tmpPaint.measureText(c, 0, 1) + kerningValue;
}*/
}
}
}
// Text curve xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_margin="20dp"
android:id="@+id/tcl_llMainFrame"
android:layout_width="match_parent"
android:layout_height="400dp"
android:orientation="horizontal">
</LinearLayout>
<!--<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="startReverse"
android:text="Reverse"
/>-->
<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/seekBar"
android:max="720"
android:progress="50"
android:background="@color/blue_semi_transparent"
/>
</LinearLayout>
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Anda sekarang membaca artikel Text curve clockwise and anticlockwise in android dengan alamat link https://googleandroiddevelopertutorial.blogspot.com/2016/10/text-curve-clockwise-and-anticlockwise.html
Text curve clockwise and anticlockwise in android
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