korilakkuma/canvasview

Android Application Library

canvasview's Issues

Text isn't treated like an undoable/redoable action

Having a text on its own is useless, it has to be something the undo/redo functionality actually applies to.

Add to Maven

Is it planned to add this library to maven ? It would be very useful and more developers would use it :) Thanks!

Bitmap background is black when BaseColor is Transparent

When I call getBitmap on the CanvasView it is not preserving my transparent background, instead it appears black. This is not the case if I set the BaseColor to be anything other than transparent.

Not work text mode

When i select canvasview textmode i am not able to write any text

Erasing PorterDuffXfermode not working

Eraser not working if alpha 1.0, must do alpha 0.99 or less to make it work...
<com.bla.bla.bla.utils.CanvasView
android:id="@+id/canvas"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:alpha="0.99"/>

Can't erase canvas with empty (transparent) canvas

I can't erase canvas with PorterDuffXfermode(PorterDuff.Mode.CLEAR)
Do you know if it's possible ?

How to zoom in/out image with drawing?

Selected Images are not zoom in/out with pitch or pan zooming. @Korilakkuma How can I give zooming with CanvasView.

Eraser Mode

Hi, Eraser is not done correctly what actually does is just paint with a white color.

Issue while getting bitmap of Canvas with text

drawText works fine when we are calling it on canvas but when we save the image the text takes up some weird font and changes it's orientation from horizontal to vertical.

How to implement eraser option

I try to use your code but the eraser is not working,how can i use it

canvas.clear will turn base color to white.

I have put
canvas.setBaseColor(Color.TRANSPARENT);
because I have an imageview below canvas, for my simple photo/image doodle editor.
But whenever I call canvas.clear(), the whole screens goes white. And if I using eraser on canvas the below image/photo appears. I figure out that the base color has change to white because of something inside clear void.

So I try removing or replacing paint.setColor(Color.WHITE) to paint.setColor(baseColor) inside clear() void. Testing the base color to regular color(red,blue,etc) will work. But if I put Color.TRANSPARENT will make it clear NOTHING at all.

How to disable and re-enable settings.?

How to Re-enable all settings disabled ,e.g., by disableSettings() method.

How to make eraser in canvasview

I used your code and i try to make eraser code which's i'm not able to did,so can you please help me how to make eraser

Can draw or not

I'm making drawing tools these days.
I added a method because I needed a way to set whether I could draw CanvasView.
Leave comments if you think you need someone else.
I'll look at your answers and request a "Pull requests".

how to Draw a hollow rectangle

how to Draw a hollow rectangle

    this.canvas.setMode(CanvasView.Mode.DRAW);    // for drawing
    this.canvas.setBaseColor(Color.BLUE);
    this.canvas.setPaintStyle(Paint.Style.STROKE);
    this.canvas.setPaintStrokeWidth(20F);
    this.canvas.setPaintStrokeColor(Color.RED);
    this.canvas.setDrawer(CanvasView.Drawer.RECTANGLE);         // Draw Rectangle
    this.canvas.setLineCap(Paint.Cap.SQUARE);
    this.canvas.setBlur(5F);

I try this,but no used

Clearing screen makes drawing laggy.

After clearing screen drawing becomes laggy..
Also eraser is not clearing the drawing its changing stoke color to white. It doesn't works on other background color.

I want this Library dependencies.

How can I get this Library dependencies?

Found bug when drawing with rectangle and move

I found a bug when drawing with rectangle and move upside
This bug found in method: onActionMove class CanvasView
You can fix this by:
from
case RECTANGLE :
path.reset();
path.addRect(this.startX, this.startY, x, y, Path.Direction.CCW);
break;

to
case RECTANGLE :
path.reset();
float sX = this.startX;
float sY = this.startY;
float eX = x;
float eY = y;
if(sX > eX){
sX = x;
eX = this.startX;
}
if(sY > eY){
sY = y;
eY = this.startY;
}
path.addRect(sX, sY, eX, eY, Path.Direction.CCW);

Want to change on mode on different button click

Hi Friend,

I hope there is a answer of my Question. I want to change Mode, Drawer, PaintStrokeWidth on button click. Currently I wrote the code

btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { canvas.setMode(CanvasView.Mode.ERASER); } });

but it is not changing the mode to Eraser.

multiple text lines

How can i set different texts? it seems i can only put 1 text on canvas.

Sr, Can i set setBackground by bitmap image for CanvasView?

change brush color

hi,how i can change brush color?? for example 'red,white,blue'

IT's better to have a scale function on CavasView drawing page.