adding some initial Editor Draw related things copied from Simple Draw
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tibbi
parent
731cac7ef4
commit
9da4b800ac
7 changed files with 317 additions and 0 deletions
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@ -0,0 +1,11 @@
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package com.simplemobiletools.gallery.pro.actions
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import android.graphics.Path
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import java.io.Serializable
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import java.io.Writer
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interface Action : Serializable {
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fun perform(path: Path)
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fun perform(writer: Writer)
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}
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@ -0,0 +1,37 @@
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package com.simplemobiletools.gallery.pro.actions
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import android.graphics.Path
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import java.io.Writer
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import java.security.InvalidParameterException
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class Line : Action {
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val x: Float
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val y: Float
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constructor(data: String) {
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if (!data.startsWith("L"))
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throw InvalidParameterException("The Line data should start with 'L'.")
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try {
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val xy = data.substring(1).split(",".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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x = xy[0].trim().toFloat()
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y = xy[1].trim().toFloat()
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} catch (ignored: Exception) {
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throw InvalidParameterException("Error parsing the given Line data.")
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}
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}
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constructor(x: Float, y: Float) {
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this.x = x
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this.y = y
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}
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override fun perform(path: Path) {
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path.lineTo(x, y)
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}
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override fun perform(writer: Writer) {
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writer.write("L$x,$y")
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}
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}
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@ -0,0 +1,37 @@
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package com.simplemobiletools.gallery.pro.actions
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import android.graphics.Path
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import java.io.Writer
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import java.security.InvalidParameterException
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class Move : Action {
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val x: Float
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val y: Float
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constructor(data: String) {
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if (!data.startsWith("M"))
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throw InvalidParameterException("The Move data should start with 'M'.")
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try {
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val xy = data.substring(1).split(",".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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x = xy[0].trim().toFloat()
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y = xy[1].trim().toFloat()
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} catch (ignored: Exception) {
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throw InvalidParameterException("Error parsing the given Move data.")
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}
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}
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constructor(x: Float, y: Float) {
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this.x = x
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this.y = y
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}
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override fun perform(path: Path) {
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path.moveTo(x, y)
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}
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override fun perform(writer: Writer) {
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writer.write("M$x,$y")
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}
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}
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@ -0,0 +1,46 @@
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package com.simplemobiletools.gallery.pro.actions
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import android.graphics.Path
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import java.io.Writer
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import java.security.InvalidParameterException
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class Quad : Action {
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val x1: Float
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val y1: Float
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val x2: Float
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val y2: Float
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constructor(data: String) {
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if (!data.startsWith("Q"))
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throw InvalidParameterException("The Quad data should start with 'Q'.")
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try {
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val parts = data.split("\\s+".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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val xy1 = parts[0].substring(1).split(",".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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val xy2 = parts[1].split(",".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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x1 = xy1[0].trim().toFloat()
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y1 = xy1[1].trim().toFloat()
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x2 = xy2[0].trim().toFloat()
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y2 = xy2[1].trim().toFloat()
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} catch (ignored: Exception) {
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throw InvalidParameterException("Error parsing the given Quad data.")
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}
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}
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constructor(x1: Float, y1: Float, x2: Float, y2: Float) {
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this.x1 = x1
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this.y1 = y1
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this.x2 = x2
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this.y2 = y2
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}
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override fun perform(path: Path) {
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path.quadTo(x1, y1, x2, y2)
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}
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override fun perform(writer: Writer) {
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writer.write("Q$x1,$y1 $x2,$y2")
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}
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}
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@ -0,0 +1,82 @@
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package com.simplemobiletools.gallery.pro.models
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import android.app.Activity
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import android.graphics.Path
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import com.simplemobiletools.commons.extensions.toast
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import com.simplemobiletools.gallery.pro.R
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import com.simplemobiletools.gallery.pro.actions.Action
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import com.simplemobiletools.gallery.pro.actions.Line
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import com.simplemobiletools.gallery.pro.actions.Move
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import com.simplemobiletools.gallery.pro.actions.Quad
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import java.io.ObjectInputStream
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import java.io.Serializable
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import java.security.InvalidParameterException
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import java.util.*
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// https://stackoverflow.com/a/8127953
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class MyPath : Path(), Serializable {
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val actions = LinkedList<Action>()
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private fun readObject(inputStream: ObjectInputStream) {
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inputStream.defaultReadObject()
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val copiedActions = actions.map { it }
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copiedActions.forEach {
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it.perform(this)
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}
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}
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fun readObject(pathData: String, activity: Activity) {
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val tokens = pathData.split("\\s+".toRegex()).dropLastWhile(String::isEmpty).toTypedArray()
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var i = 0
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try {
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while (i < tokens.size) {
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when (tokens[i][0]) {
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'M' -> addAction(Move(tokens[i]))
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'L' -> addAction(Line(tokens[i]))
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'Q' -> {
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// Quad actions are of the following form:
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// "Qx1,y1 x2,y2"
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// Since we split the tokens by whitespace, we need to join them again
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if (i + 1 >= tokens.size)
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throw InvalidParameterException("Error parsing the data for a Quad.")
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addAction(Quad(tokens[i] + " " + tokens[i + 1]))
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++i
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}
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}
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++i
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}
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} catch (e: Exception) {
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activity.toast(R.string.unknown_error_occurred)
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}
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}
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override fun reset() {
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actions.clear()
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super.reset()
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}
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private fun addAction(action: Action) {
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when (action) {
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is Move -> moveTo(action.x, action.y)
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is Line -> lineTo(action.x, action.y)
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is Quad -> quadTo(action.x1, action.y1, action.x2, action.y2)
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}
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}
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override fun moveTo(x: Float, y: Float) {
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actions.add(Move(x, y))
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super.moveTo(x, y)
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}
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override fun lineTo(x: Float, y: Float) {
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actions.add(Line(x, y))
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super.lineTo(x, y)
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}
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override fun quadTo(x1: Float, y1: Float, x2: Float, y2: Float) {
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actions.add(Quad(x1, y1, x2, y2))
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super.quadTo(x1, y1, x2, y2)
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}
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}
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@ -0,0 +1,7 @@
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package com.simplemobiletools.gallery.pro.models
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import android.graphics.Color
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data class PaintOptions(var color: Int = Color.BLACK, var strokeWidth: Float = 5f, var isEraser: Boolean = false) {
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fun getColorToExport() = if (isEraser) "none" else "#${Integer.toHexString(color).substring(2)}"
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}
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@ -3,12 +3,42 @@ package com.simplemobiletools.gallery.pro.views
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import android.content.Context
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import android.graphics.Bitmap
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import android.graphics.Canvas
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import android.graphics.Paint
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import android.util.AttributeSet
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import android.view.MotionEvent
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import android.view.View
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import com.simplemobiletools.gallery.pro.extensions.config
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import com.simplemobiletools.gallery.pro.models.MyPath
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import com.simplemobiletools.gallery.pro.models.PaintOptions
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import java.util.*
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class EditorDrawCanvas(context: Context, attrs: AttributeSet) : View(context, attrs) {
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private var mCurX = 0f
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private var mCurY = 0f
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private var mStartX = 0f
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private var mStartY = 0f
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private var mColor = 0
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private var mWasMultitouch = false
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private var mPaths = LinkedHashMap<MyPath, PaintOptions>()
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private var mPaint = Paint()
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private var mPath = MyPath()
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private var mPaintOptions = PaintOptions()
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private var backgroundBitmap: Bitmap? = null
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init {
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mColor = context.config.primaryColor
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mPaint.apply {
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color = mColor
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style = Paint.Style.STROKE
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strokeJoin = Paint.Join.ROUND
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strokeCap = Paint.Cap.ROUND
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strokeWidth = 40f
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isAntiAlias = true
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}
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}
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override fun onDraw(canvas: Canvas) {
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super.onDraw(canvas)
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canvas.save()
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@ -19,9 +49,76 @@ class EditorDrawCanvas(context: Context, attrs: AttributeSet) : View(context, at
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canvas.drawBitmap(backgroundBitmap!!, left.toFloat(), top.toFloat(), null)
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}
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for ((key, value) in mPaths) {
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changePaint(value)
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canvas.drawPath(key, mPaint)
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}
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changePaint(mPaintOptions)
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canvas.drawPath(mPath, mPaint)
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canvas.restore()
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}
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override fun onTouchEvent(event: MotionEvent): Boolean {
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val x = event.x
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val y = event.y
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when (event.action and MotionEvent.ACTION_MASK) {
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MotionEvent.ACTION_DOWN -> {
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mWasMultitouch = false
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mStartX = x
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mStartY = y
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actionDown(x, y)
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}
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MotionEvent.ACTION_MOVE -> {
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if (event.pointerCount == 1 && !mWasMultitouch) {
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actionMove(x, y)
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}
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}
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MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> actionUp()
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MotionEvent.ACTION_POINTER_DOWN -> mWasMultitouch = true
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}
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invalidate()
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return true
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}
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private fun actionDown(x: Float, y: Float) {
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mPath.reset()
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mPath.moveTo(x, y)
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mCurX = x
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mCurY = y
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}
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private fun actionMove(x: Float, y: Float) {
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mPath.quadTo(mCurX, mCurY, (x + mCurX) / 2, (y + mCurY) / 2)
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mCurX = x
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mCurY = y
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}
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private fun actionUp() {
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if (!mWasMultitouch) {
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mPath.lineTo(mCurX, mCurY)
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// draw a dot on click
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if (mStartX == mCurX && mStartY == mCurY) {
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mPath.lineTo(mCurX, mCurY + 2)
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mPath.lineTo(mCurX + 1, mCurY + 2)
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mPath.lineTo(mCurX + 1, mCurY)
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}
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}
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mPaths[mPath] = mPaintOptions
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mPath = MyPath()
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mPaintOptions = PaintOptions(mPaintOptions.color, mPaintOptions.strokeWidth, mPaintOptions.isEraser)
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}
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private fun changePaint(paintOptions: PaintOptions) {
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mPaint.color = paintOptions.color
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mPaint.strokeWidth = paintOptions.strokeWidth
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}
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fun updateBackgroundBitmap(bitmap: Bitmap) {
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backgroundBitmap = bitmap
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invalidate()
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