Table of Contents
RasmView is an Android drawing library it delivers a see that allows consumers to draw on best of a bitmap.
Demo
https://www.youtube.com/observe?v=8qYhwjleT_8
Characteristics
- 8 previously described brushes, and you can determine your personal.
- Drawing on major of illustrations or photos.
- Undo/redo operations.
- Zooming in/out, rotation & translation.
- Tailor made background shade.
Download
Gradle:
dependencies
implementation 'com.raedapps:rasmview:1.2.'
Maven:
<dependency>
<groupId>com.raedappsgroupId>
<artifactId>rasmviewartifactId>
<version>1.2.version>
dependency>
Usage Guideline
Increase the next to your format file:
RasmContext
RasmContext will allow you to handle the brush configuration, undo/redo, reset transformation, and far more. RasmContext can be accessed from RasmView:
val rasmView = findViewById<RasmView>(R.id.rasmView)
val rasmContext = rasmView.rasmContext
Shifting the brush
You can use the BrushesRepository to get an presently outlined brush.
val brushesRepository = BrushesRepository(means)
rasmContext.brushConfig = brushesRepository.get(Brush.Marker)
The next brushes are now described:
enum course Brush
Pencil,
Pen,
Calligraphy,
AirBrush,
Marker,
HardEraser,
SoftEraser,
Brush coloration
Listed here is how to change the brush coloration:
rasmContext.brushColor = Coloration.Pink
rasmContext.brushColor = 0xff2187bb.toInt() //ARGB
The alpha channel price is disregarded, you can management alpha by setting brushConfig.stream.
Brush measurement and other configurations
val brushConfig = rasmContext.brushConfig
brushConfig.dimension = .5f
brushConfig.stream = .25f
brushConfig.isEraser = legitimate
Custom brushes
val myStampBitmap = ...
val customBrushConfig = BrushConfig()
customBrushConfig.stamp = BrushStamp.BitmapStamp(myStampBitmap)
customBrushConfig.size = .25f
customBrushConfig.spacing = .1f
rasmContext.brushConfig = customBrushConfig
Drawing on a bitmap (your very own image).
val imageBitmap = ... //load your bitmap whether or not from a URI or sources
rasmContext.setRasm(imageBitmap)
rasmView.resetTransformation()
Receiving the drawing
val drawingBitmap = rasmContext.exportRasm()
Track record coloration
rasmContext.setBackgroundColor(Colour.BLACK)
Undo/redo
val rasmState = rasmContext.point out
rasmState.undo()
rasmState.redo()
But you do not want to keep your buttons enabled when an undo/redo is not possible, you can listen to state updates:
undoButton.setOnClickListener
rasmState.undo()
redoButton.setOnClickListener
rasmState.redo()
rasmState.addOnStateChangedListener
undoButton.isEnabled = rasmState.canCallUndo()
redoButton.isEnabled = rasmState.canCallRedo()
undoButton.isEnabled = rasmState.canCallUndo()
redoButton.isEnabled = rasmState.canCallRedo()
Clearing the drawing
Enabling rotation
rasmContext.rotationEnabled = genuine
Resetting the transformation
rasmView.resetTransformation()
If you located a bug, please open an challenge.
License
Copyright 2022 Raed Mughaus
Accredited underneath the Apache License, Version 2. (the "License")
you could not use this file besides in compliance with the License.
You may get a copy of the License at
http://www.apache.org/licenses/LICENSE-2.
Unless demanded by relevant law or agreed to in writing, software
distributed underneath the License is dispersed on an "AS IS" Foundation,
With no WARRANTIES OR Conditions OF ANY Type, either specific or implied.
See the License for the unique language governing permissions and
restrictions underneath the License.
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