Piano Chart View

Elementary and clean Android View for displaying piano chord and scale charts in music theory apps for pianists.

Sample

Installation

Step 1

Add the JitPack repository to your build file

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

Step 2

Add the dependency

	dependencies {
		compile 'com.github.Andy671:PianoChartView:v0.6.6'
	}
Gradle

Usage

Creating from xml:

In your layout.xml

xmlns:custom="http://schemas.android.com/apk/res-auto"
XML
<!-- Custom arguments are optional - if you don't override them it uses default values -->
 <com.kekstudio.pianochartview.PianoChartView
        android:id="@+id/piano_chart_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

       	custom:checkedKeysColor="@android:color/white"
       	custom:lightKeysColor="@color/colorCustomLight"
        custom:darkKeysColor="@color/colorCustomDark"
        custom:size="Small"
        custom:checkedKeys="@array/some_integer_array"/>
XML

In your arrays.xml

<!-- Numbers = keys on keyboard -->
    <integer-array name="some_integer_array">
        <item>5</item>
        <item>7</item>
        <item>11</item>
        <item>1</item>
    </integer-array>
XML

In your colors.xml

    <color name="colorCustomLight">#C8E6C9</color>
    <color name="colorCustomDark">#1B5E20</color>
XML

Editing from code:

 	PianoChartView pianoChartView = (PianoChartView) findViewById(R.id.piano_chart_view_small);
	pianoChartView.setCheckedKeys(new int[]{2, 5, 3, 8, 11, 12});
	pianoChartView.setSize(PianoChartView.Size.Small);
	pianoChartView.setLightKeysColor(Color.parseColor("#CFD8DC"));
	pianoChartView.setDarkKeysColor(Color.parseColor("#607D8B"));
	pianoChartView.setCheckedKeysColor(Color.parseColor("#B2EBF2"));
Java

See sample for more info

XML Attributes

Attribute Type Default
lightKeysColor color Color.WHITE
darkKeysColor color Color.DKGRAY
checkedKeysColor color #03A9F4
additionalCheckedKeysColor color #03A9F4
checkedKeys reference (int[]) { }
additionalCheckedKeys reference (int[]) { }
namesOfKeys reference (String[]) { }
size enum [Large, Small] Large

Public methods

Type Method
void setCheckedKeys(int[] numbers)
void setAdditionalCheckedKeys(int[] numbers)
void setNamesOfKeys(String... keyLetters)
void setSize(Size size)
void setLightKeysColor(int color)
void setDarkKeysColor(int color)
void setCheckedKeysColor(int color)
void setAdditionalCheckedKeysColor(int color)
int[] getCheckedKeys()
int[] getAdditionalCheckedKeys()
Size getSize()
int getLightKeysColor()
int getDarkKeysColor()
int getCheckedKeysColor()
int getAdditionalCheckedKeysColor()

GitHub