I want to add a string on bitmap image.I have a metod drawTextToBitmap,this method working success place string on bitmap image.But my bitmap image is very small like pinmark image.This function set the string based on the bitmap height and width.I want to place the string exceed than the bitmap image.So Please help me to solve the problem.
Following method i am using to get bitmap :
public Bitmap drawTextToBitmap(Context gContext, int gResId, String gText) {
Resources resources = gContext.getResources();
float scale = resources.getDisplayMetrics().density;
Bitmap bitmap = BitmapFactory.decodeResource(resources, gResId);
android.graphics.Bitmap.Config bitmapConfig = bitmap.getConfig();
// set default bitmap config if none
if (bitmapConfig == null) {
bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
}
// resource bitmaps are imutable,
// so we need to convert it to mutable one
bitmap = bitmap.copy(bitmapConfig, true);
Canvas canvas = new Canvas(bitmap);
// new antialised Paint
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
// text color - #3D3D3D
paint.setColor(Color.BLACK);
// text size in pixels
paint.setTextSize((int) (70 * scale));
// text shadow
paint.setShadowLayer(1f, 0f, 1f, Color.BLACK);
// draw text to the Canvas center
Rect bounds = new Rect();
paint.getTextBounds(gText, 0, gText.length(), bounds);
int m = (bitmap.getWidth() - bounds.width()) / 2;
int l = (bitmap.getHeight() + bounds.height()) / 2;
canvas.drawText(gText, 1000, l, paint);
return bitmap;
}
Try this:
public static Bitmap drawStringonBitmap(Bitmap src, String string, Point location, int color, int alpha, int size, boolean underline,int width ,int height) {
Bitmap result = Bitmap.createBitmap(width, height, src.getConfig());
Canvas canvas = new Canvas(result);
canvas.drawBitmap(src, 0, 0, null);
Paint paint = new Paint();
paint.setColor(color);
paint.setAlpha(alpha);
paint.setTextSize(size);
paint.setAntiAlias(true);
paint.setUnderlineText(underline);
canvas.drawText(string, location.x, location.y, paint);
return result;
}
Related
I need to change an image, from circle to normal square.
I'm a beginner a few weeks in programming,
I'm 2 days stopped in this code, does anyone know how to change?
I already tried everything, but I could not solve
I do not understand anything about canvas, I've already studied to solve this problem, but I'm still not able to
public static Bitmap getCircleBitmap(Bitmap bitmap) {
final int scaledWidth = 100;
final int scaledHeight = 100;
bitmap = Bitmap.createScaledBitmap(bitmap, scaledWidth, scaledHeight, true);
Bitmap output;
Rect srcRect, dstRect;
float r;
final int width = bitmap.getWidth();
final int height = bitmap.getHeight();
if (width > height) {
output = Bitmap.createBitmap(height, height, Bitmap.Config.ARGB_8888);
int left = (width - height) / 2;
int right = left + height;
srcRect = new Rect(left, 0, right, height);
dstRect = new Rect(0, 0, height, height);
r = height / 2;
} else {
output = Bitmap.createBitmap(width, width, Bitmap.Config.ARGB_8888);
int top = (height - width) / 2;
int bottom = top + width;
srcRect = new Rect(0, top, width, bottom);
dstRect = new Rect(0, 0, width, width);
r = width / 2;
}
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawCircle(r, r, r, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, srcRect, dstRect, paint);
bitmap.recycle();
return output;
}
public static Bitmap getBitmapFromVectorDrawable(Context context, int drawableId) {
Drawable drawable = AppCompatResources.getDrawable(context, drawableId);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
drawable = (DrawableCompat.wrap(drawable)).mutate();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
}
If you look at your code, towards the end of method getCircleBitmap() you have the below line of code:
canvas.drawCircle(r, r, r, paint);
That's the one drawing the circle image for you using DrawCircle.
What you can do is, replace it with DrawRect. That should do that trick for you.
However, if you need to just draw a square image from a vector then you can use a standard ImageView straightaway and use the vector as image resource.
now I am getting only one Text over the image I am using Canvas and Bitmap :
here is my code :
public Bitmap drawTextArrayToBitmap(Context mContext, int resourceId,String mText) {
try {
Resources resources = mContext.getResources();
float scale = resources.getDisplayMetrics().density;
Bitmap bitmap = BitmapFactory.decodeResource(resources, resourceId);
android.graphics.Bitmap.Config bitmapConfig = bitmap.getConfig();
if(bitmapConfig == null) {
bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
}
bitmap = bitmap.copy(bitmapConfig, true);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.rgb(110,110, 110));
paint.setTextSize((int) (12 * scale));
paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY);
Rect bounds = new Rect();
paint.getTextBounds(mText, 0, mText.length(), bounds);
/* int x = (bitmap.getWidth() - bounds.width())/6;
int y = (bitmap.getHeight() + bounds.height())/5;*/
int x = 100, y = 100;
for(int i=0;i<20;i++)
{
canvas.drawText(mText, x * scale, y * scale, paint);
}
return bitmap;
} catch (Exception e) {
// TODO: handle exception
return null;
}
}
inside oncreate ;
ImageView mImageView = (ImageView)findViewById(R.id.imageView1);
// Bitmap bmp =drawTextToBitmap(this,R.drawable.man,"Hello Android");
Bitmap bmp =drawTextArrayToBitmap(this,R.drawable.man,"Smile");
mImageView.setImageBitmap(bmp);
In this above code, I want to add multiple texts on random position over Image and different style I have tried much time I could not get succeed yet. I have tried inside loop also.
Thank you in Advance I would appreciate your effort
here is my code :
ImageView mImageView = (ImageView)findViewById(R.id.imageView1);
// Bitmap bmp =drawTextToBitmap(this,R.drawable.man,"Hello Android");
Bitmap bmp =drawTextArrayToBitmap(this,R.drawable.man,"Smile");
mImageView.setImageBitmap(bmp);
now here is my method :
public Bitmap drawTextArrayToBitmap(Context mContext, int resourceId,String mText) {
try {
Resources resources = mContext.getResources();
float scale = resources.getDisplayMetrics().density;
Bitmap bitmap = BitmapFactory.decodeResource(resources, resourceId);
android.graphics.Bitmap.Config bitmapConfig = bitmap.getConfig();
if(bitmapConfig == null) {
bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
}
bitmap = bitmap.copy(bitmapConfig, true);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.rgb(110,110, 110));
paint.setTextSize((int) (12 * scale));
paint.setShadowLayer(1f, 0f, 1f, Color.DKGRAY);
Rect bounds = new Rect();
paint.getTextBounds(mText, 0, mText.length(), bounds);
/* int x = (bitmap.getWidth() - bounds.width())/6;
int y = (bitmap.getHeight() + bounds.height())/5;*/
int x = 100, y = 100;
for(int i=0;i<20;i++)
{
canvas.drawText(mText, x * scale, y * scale, paint);
}
return bitmap;
} catch (Exception e) {
// TODO: handle exception
return null;
}
}
}
I am working on an android application like image filter I want to make an image like this after using a filter over an image
After searching on StackOverflow I got this solution only and this is not like as I want to implement: I got like this
canvas.drawText("This is", 100, 100, mTextPaint);
canvas.drawText("multi-line", 100, 150, mTextPaint);
canvas.drawText("text", 100, 200, mTextPaint);
I do not want to do like this : please help me I would approciate your answers and suggestion
I tried for a long time and couldn't get any better,On different mobile phones:
1. I would like to add pictures and words to the sourceBitmap.
2. want to be able to adjust bitmap and word positions.
Without using library simply we can watermark image using canvas and paint concept
Point point=new Point();
point.set(180, 1000);
Bitmap b=waterMark(BitmapFactory.decodeResource(getResources(), R.drawable.image),"your Text",point,Color.WHITE,90,30,true);
imageView.setImageBitmap(b);
the method code
public Bitmap waterMark(Bitmap src, String watermark, Point location, int color, int alpha, int size, boolean underline) {
//get source image width and height
int w = src.getWidth();
int h = src.getHeight();
Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
//create canvas object
Canvas canvas = new Canvas(result);
//draw bitmap on canvas
canvas.drawBitmap(src, 0, 0, null);
//create paint object
Paint paint = new Paint();
//apply color
paint.setColor(color);
//set transparency
paint.setAlpha(alpha);
//set text size
paint.setTextSize(size);
paint.setAntiAlias(true);
//set should be underlined or not
paint.setUnderlineText(underline);
//draw text on given location
canvas.drawText(watermark, location.x, location.y, paint);
return result;
}
This method will automatically adjust the size of the watermark text according to the size of bitmap. Additionally it will also add the watermark diagonally if the image is portrait and horizontal if image is landscape
public static Bitmap waterMark(Bitmap src, String watermark, int color, int alpha, int size) {
//get source image width and height
int w = src.getWidth();
int h = src.getHeight();
Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());
//create canvas object
Canvas canvas = new Canvas(result);
//draw bitmap on canvas
canvas.drawBitmap(src, 0, 0, null);
//create paint object
Paint paint = new Paint();
//apply color
paint.setColor(color);
//set transparency
paint.setAlpha(alpha);
//set text size
paint.setTextSize(size);
paint.setAntiAlias(true);
Paint stkPaint = new Paint();
stkPaint.setStyle(Paint.Style.STROKE);
stkPaint.setStrokeWidth(1);
stkPaint.setTextSize(size);
stkPaint.setAlpha(alpha);
stkPaint.setColor(Color.BLACK);
stkPaint.setAntiAlias(true);
//set should be underlined or not
//draw text on given location
canvas.save();
float width = paint.measureText(watermark);
Logger.e("width of bitmap", "" + w);
Logger.e("width of text", "" + width);
if (width > w) {
int i = 2;
while (width > w) {
paint.setTextSize(size - i);
stkPaint.setTextSize(size - i);
width = paint.measureText(watermark);
Logger.e("width of text", "" + width);
i++;
}
} else {
int i = 2;
while (width < w) {
paint.setTextSize(size + i);
stkPaint.setTextSize(size + i);
width = paint.measureText(watermark);
Logger.e("width of text", "" + width);
i++;
}
}
if (w < h) {
canvas.rotate(-60, src.getWidth() / 2, src.getHeight() / 2);
}
float final_x = (src.getWidth() - width) / 2;
Point p = new Point();
p.set((int) final_x, src.getHeight() / 2);
canvas.drawText(watermark, p.x, p.y, paint);
canvas.drawText(watermark, p.x, p.y, stkPaint);
canvas.restore();
return result;
}
how to use Canvas to draw an image inside another image;
like this, look at the picture :
to put it in a map app v2 like this
marker = gmap.addMarker(new MarkerOptions().title("test")
.position(new LatLng(0, 0))
.snippet("snipet test")
.icon(BitmapDescriptorFactory.fromBitmap(bitmap))
I already draw a picture in a rectangle like this
InputStream inputStream = connection.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(inputStream);//Convert to bitmap
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawOval(rectF, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
how to do this
please help me
Set a clipping path for your canvas with the shape of the frame you want:
Path frame = new Path();
frame.addCircle(centerX, centerY, radius, Direction.CW);
canvas.getClipBounds(oldClipBounds); //see below
canvas.clipPath(frame);
Everything you draw into the canvas afterwards will not be visible if it's outside of the circle.
If you need additional drawing, which should take place only outside of this frame, you can protect it later on by:
canvas.clipRect(oldClipBounds, Region.Op.REVERSE_DIFFERENCE);
I found a solution for this problem:
you put the image in a circle with canvas after that you resize the result with the exact size, and put it inside the marker image.
public class IconMarker {
public IconMarker(){}
public Bitmap DrawMarker(String userid,int typeid,Resources rcs){
// image from database: ...InputStream inputStream = connection.getInputStream();
//Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
Bitmap img1=new UserInfoBd().getPhotoProfil(userid);
if(img1==null) img1=BitmapFactory.decodeResource(rcs,R.drawable.espace_photo);
Bitmap.Config conf = Bitmap.Config.ARGB_8888;
Bitmap bmp = BitmapFactory.decodeResource(rcs,
typeid);
Bitmap output = Bitmap.createBitmap(bmp.getWidth(),
bmp.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas1 = new Canvas(output);
canvas1.drawBitmap(bmp, 0,0, null);
Bitmap output1 = Bitmap.createBitmap(img1.getWidth(),
img1.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output1);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, img1.getWidth(), img1.getHeight());
final RectF rectF = new RectF(rect);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawOval(rectF, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(img1, rect, rect, paint);
Bitmap img=getResizedBitmap(output1,bmp.getHeight()*3/4-4,bmp.getWidth()*3/4);
canvas1.drawBitmap(img,(float)4.7,(float)3.5,null);
return output;
}
public Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// CREATE A MATRIX FOR THE MANIPULATION
Matrix matrix = new Matrix();
// RESIZE THE BIT MAP
matrix.postScale(scaleWidth, scaleHeight);
// RECREATE THE NEW BITMAP
Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);
return resizedBitmap;
}
}