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Merge pull request #4 from Madrapps/kotlin_migration
Kotlin migration
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151 changes: 0 additions & 151 deletions
151
eyedropper/src/main/java/com/madrapps/eyedropper/EyeDropper.java
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eyedropper/src/main/java/com/madrapps/eyedropper/EyeDropper.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| package com.madrapps.eyedropper | ||
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|
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| import android.graphics.Bitmap | ||
| import android.graphics.Color | ||
| import android.graphics.Matrix | ||
| import android.graphics.drawable.BitmapDrawable | ||
| import android.support.annotation.ColorInt | ||
| import android.view.MotionEvent | ||
| import android.view.MotionEvent.ACTION_DOWN | ||
| import android.view.MotionEvent.ACTION_UP | ||
| import android.view.View | ||
| import android.view.View.DRAWING_CACHE_QUALITY_LOW | ||
| import android.widget.ImageView | ||
|
|
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| class EyeDropper(val view: View, val listener: ColorSelectionListener) { | ||
| private val NO_COLOR = Color.TRANSPARENT | ||
| private val INVERT_MATRIX = Matrix() | ||
|
|
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| /** | ||
| * Register a callback to be invoked when the color selection begins or ends. | ||
| */ | ||
| var selectionListener: SelectionListener? = null | ||
|
|
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| init { | ||
| if (view.shouldDrawingCacheBeEnabled()) { | ||
| view.isDrawingCacheEnabled = true | ||
| view.drawingCacheQuality = DRAWING_CACHE_QUALITY_LOW | ||
| } | ||
| setTouchListener() | ||
| } | ||
|
|
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| fun setTouchListener() { | ||
| view.setOnTouchListener { _, event -> | ||
| if (event.down()) selectionListener?.onSelectionStart(event) | ||
| notifyColorSelection(event.x.toInt(), event.y.toInt()) | ||
| if (event.up()) selectionListener?.onSelectionEnd(event) | ||
| true | ||
| } | ||
| } | ||
|
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| fun getColorAtPoint(x: Int, y: Int): Int { | ||
| when (view) { | ||
| is ImageView -> return handleIfImageView(view, x, y) | ||
| else -> return getPixelAtPoint(view.drawingCache, x, y) | ||
| } | ||
| } | ||
|
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| fun handleIfImageView(view: ImageView, x: Int, y: Int): Int { | ||
| val drawable = view.drawable | ||
| when (drawable) { | ||
| is BitmapDrawable -> { | ||
| view.imageMatrix.invert(INVERT_MATRIX) | ||
| val mappedPoints = floatArrayOf(x.toFloat(), y.toFloat()) | ||
| INVERT_MATRIX.mapPoints(mappedPoints) | ||
| return getPixelAtPoint(drawable.bitmap, mappedPoints[0].toInt(), mappedPoints[1].toInt()) | ||
| } | ||
| else -> return NO_COLOR | ||
| } | ||
| } | ||
|
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| fun getPixelAtPoint(bitmap: Bitmap, x: Int, y: Int): Int { | ||
| if (bitmap.isValidCoordinate(x, y)) { | ||
| return bitmap.getPixel(x, y) | ||
| } | ||
| return NO_COLOR | ||
| } | ||
|
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| fun notifyColorSelection(x: Int, y: Int) { | ||
| val colorAtPoint = getColorAtPoint(x, y) | ||
| listener.onColorSelected(colorAtPoint) | ||
| } | ||
|
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||
|
|
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| /** | ||
| * Optional listener to listen to before and after selection events | ||
| */ | ||
| interface SelectionListener { | ||
| /** | ||
| * Invoked when the user touches the view to select a color. This corresponds to the [ ][MotionEvent.ACTION_DOWN] event. | ||
| * | ||
| * @param event the down motion event | ||
| */ | ||
| fun onSelectionStart(event: MotionEvent) | ||
|
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| /** | ||
| * Invoked when the color selection is finished. This corresponds to the [MotionEvent.ACTION_UP] | ||
| * event. | ||
| * | ||
| * @param event the up motion event | ||
| */ | ||
| fun onSelectionEnd(event: MotionEvent) | ||
| } | ||
|
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| interface ColorSelectionListener { | ||
| /** | ||
| * Invoked when a color is selected from the given view | ||
| * @param color the selected color | ||
| */ | ||
| fun onColorSelected(@ColorInt color: Int) | ||
| } | ||
| } | ||
|
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| fun Bitmap.isValidCoordinate(x: Int, y: Int): Boolean { | ||
| return x in 1..(width - 1) && y in 1..(height - 1) | ||
| } | ||
|
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| fun View.shouldDrawingCacheBeEnabled(): Boolean = (this !is ImageView) && !isDrawingCacheEnabled | ||
|
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| fun MotionEvent.down() = (actionMasked == ACTION_DOWN) | ||
| fun MotionEvent.up() = (actionMasked == ACTION_UP) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,6 @@ | ||
| #Sun Apr 30 08:56:55 IST 2017 | ||
| #Thu May 25 21:47:09 IST 2017 | ||
| distributionBase=GRADLE_USER_HOME | ||
| distributionPath=wrapper/dists | ||
| zipStoreBase=GRADLE_USER_HOME | ||
| zipStorePath=wrapper/dists | ||
| distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip | ||
| distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-milestone-1-all.zip |
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