KavehColorPicker

This library provides a customizable color picker for android with simple interface

Features

• ColorPicker: changes values of brightness and satruation in HSV color model
• HueSlider: changes hue values of HSV color model and passes it into ColorPicker
• AlphaSlider: changes alpha value of provided color by ColorPicker
• State of components are preserved during configuration changes (screen rotation etc...)
• View size change events are implemented correctly to provide nice animations and layout changes
• Components of this library both work together and separately

SDK ????

It supports API 18 (APIs below 18 aren't tested)

How to make library work ????

The library has 3 main views called KavehColorPicker KavehHueSlider KavehColorAlphaSlider To add them to xml layout do the following:

    <ir.kotlin.kavehcolorpicker.KavehColorPicker
        android:id="@+id/colorPickerView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toStartOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ir.kotlin.kavehcolorpicker.KavehHueSlider
        android:id="@+id/hueSlider"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toStartOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="parent" />

    <ir.kotlin.kavehcolorpicker.KavehHueSlider
        android:id="@+id/colorAlphaSlider"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toStartOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="parent" />

To connect views to eachother in your code find the views by id then connect them to eachother:

        val colorPicker = findViewById<KavehColorPicker>(R.id.colorPickerView)
        val hueSlider = findViewById<KavehHueSlider>(R.id.hueSlider)
        val colorAlphaSlider = findViewById<KavehColorAlphaSlider>(R.id.colorAlphaSlider)
        
        colorPicker.alphaSliderView = colorAlphaSlider
        colorPicker.hueSliderView = hueSlider

To extract color from color picker do the following on KavehColorPicker

// Kotlin
colorPicker.color
// Java
colorPicker.getColor();

Listeners ????

Each view has its own listener to be used separately. Users on Kotlin can call the methods described below and Java users can call the same method name but instead pass an interface. If you connected KavehHueSlider and KavehColorAlphaSlider to KavehColorPicker , you don't need to call hue and alpha listeners because they are calculated in KavehColorPicker

        // KavehColorPicker
        colorPicker.setOnColorChangedListener { color ->

        }

        // KavehHueSlider
        hueSlider.setOnHueChangedListener { hue, argbColor ->
            // Hue value is betwee [0..360]
            // argbColor is just the color int representation of hue value with full brightness and saturation.
        }

        // KavehColorAlphaSlider
        colorAlphaSlider.setOnAlphaChangedListener { alpha ->
            // Alpha value between [0..1]
        }

Customization

You can change indicator's (circle knob on sliders) stroke size in xml

app:sliderStrokeSize="7dp"

In code

slider.strokeSize = 24f

You can change indicator's stroke color in xml

 app:sliderStrokeColor="@android:color/black"

In code

slider.strokeColor = Color.BLACK

You can change sliders (only KavehHueSlider and KavehColorAlphaSlider) line's cap in xml

app:sliderBarStrokeCap="Butt|Round|Square"

In code

slider.lineStrokeCap = Paint.Cap.ROUND

You can change indicator's size only in KavehColorPicker

// Default value is 24dp
        colorPicker.circleIndicatorRadius = 24f

How to add dependency

Add jitpack repository to your top-level build.gradle

  repositories {
        ..
        ..
        maven { url 'https://jitpack.io' }
    }

Or if it doesn't find library or repositories aren't defined here go to settings.gradle and add it

  dependencyResolutionManagement {
    ..
    repositories {
      ..
      ..
      maven { url 'https://jitpack.io' }
    }
}

Finally add dependency to your build.gradle

 implementation 'com.github.Mohammad3125:KavehColorPicker:v1.0.0'

License

MIT License

Copyright (c) 2023 Mohammad Hossein Naderi

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.