Timeline : add badge on jump to bottom view
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ganfra
parent
ea0809ff87
commit
d1ff3314a7
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@ -0,0 +1,186 @@
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/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package im.vector.riotx.core.platform
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import android.content.Context
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import android.graphics.Canvas
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import android.graphics.Color
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import android.graphics.Paint
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import android.graphics.Paint.ANTI_ALIAS_FLAG
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import android.graphics.PointF
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import android.graphics.Rect
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import android.graphics.RectF
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import android.text.TextPaint
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import android.util.AttributeSet
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import androidx.core.content.res.use
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import com.google.android.material.floatingactionbutton.FloatingActionButton
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import im.vector.riotx.R
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import kotlin.math.PI
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import kotlin.math.cos
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import kotlin.math.max
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import kotlin.math.min
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import kotlin.math.sin
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class BadgeFloatingActionButton @JvmOverloads constructor(
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context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
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) : FloatingActionButton(context, attrs, defStyleAttr) {
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private val textPaint = TextPaint(ANTI_ALIAS_FLAG).apply {
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textAlign = Paint.Align.LEFT
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}
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private val tintPaint = Paint(ANTI_ALIAS_FLAG)
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private var countStr: String
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private var countMaxStr: String
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private var counterBounds: RectF = RectF()
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private var counterTextBounds: Rect = Rect()
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private var counterMaxTextBounds: Rect = Rect()
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private var counterPossibleCenter: PointF = PointF()
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private var fabBounds: Rect = Rect()
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var counterTextColor: Int
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get() = textPaint.color
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set(value) {
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val was = textPaint.color
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if (was != value) {
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textPaint.color = value
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invalidate()
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}
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}
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var counterBackgroundColor: Int
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get() = tintPaint.color
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set(value) {
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val was = tintPaint.color
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if (was != value) {
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tintPaint.color = value
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invalidate()
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}
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}
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var counterTextSize: Float
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get() = textPaint.textSize
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set(value) {
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val was = textPaint.textSize
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if (was != value) {
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textPaint.textSize = value
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invalidate()
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requestLayout()
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}
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}
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var counterTextPadding: Float = 0f
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set(value) {
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if (field != value) {
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field = value
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invalidate()
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requestLayout()
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}
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}
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var maxCount: Int = 99
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set(value) {
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if (field != value) {
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field = value
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countMaxStr = "$value+"
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requestLayout()
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}
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}
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var count: Int = 0
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set(value) {
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if (field != value) {
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field = value
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countStr = countStr(value)
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textPaint.getTextBounds(countStr, 0, countStr.length, counterTextBounds)
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invalidate()
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}
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}
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init {
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countStr = countStr(count)
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textPaint.getTextBounds(countStr, 0, countStr.length, counterTextBounds)
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countMaxStr = "$maxCount+"
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attrs?.let { initAttrs(attrs) }
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}
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@SuppressWarnings("ResourceType", "Recycle")
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private fun initAttrs(attrs: AttributeSet) {
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context.obtainStyledAttributes(attrs, R.styleable.BadgeFloatingActionButton).use {
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counterBackgroundColor = it.getColor(R.styleable.BadgeFloatingActionButton_badgeBackgroundColor, 0)
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counterTextPadding = it.getDimension(R.styleable.BadgeFloatingActionButton_badgeTextPadding, 0f)
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counterTextSize = it.getDimension(R.styleable.BadgeFloatingActionButton_badgeTextSize, 14f)
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counterTextColor = it.getColor(R.styleable.BadgeFloatingActionButton_badgeTextColor, Color.WHITE)
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}
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}
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec)
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calculateCounterBounds(counterBounds)
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}
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override fun onDraw(canvas: Canvas) {
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super.onDraw(canvas)
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if (count > 0) {
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canvas.drawCircle(counterBounds.centerX(), counterBounds.centerY(), counterBounds.width() / 2f, tintPaint)
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val textX = counterBounds.centerX() - counterTextBounds.width() / 2f - counterTextBounds.left
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val textY = counterBounds.centerY() + counterTextBounds.height() / 2f - counterTextBounds.bottom
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canvas.drawText(countStr, textX, textY, textPaint)
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}
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}
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private fun calculateCounterBounds(outRect: RectF) {
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getMeasuredContentRect(fabBounds)
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calculateCounterCenter(fabBounds, counterPossibleCenter)
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textPaint.getTextBounds(countMaxStr, 0, countMaxStr.length, counterMaxTextBounds)
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val counterDiameter = max(counterMaxTextBounds.width(), counterMaxTextBounds.height()) + 2 * counterTextPadding
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val counterRight = min(counterPossibleCenter.x + counterDiameter / 2, fabBounds.right.toFloat())
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val counterTop = max(counterPossibleCenter.y - counterDiameter / 2, fabBounds.top.toFloat())
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outRect.set(counterRight - counterDiameter, counterTop, counterRight, counterTop + counterDiameter)
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}
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private fun calculateCounterCenter(inBounds: Rect, outPoint: PointF) {
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val radius = min(inBounds.width(), inBounds.height()) / 2f
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calculateCounterCenter(radius, outPoint)
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outPoint.x = inBounds.centerX() + outPoint.x
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outPoint.y = inBounds.centerY() - outPoint.y
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}
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private fun calculateCounterCenter(radius: Float, outPoint: PointF) =
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calculateCounterCenter(radius, (PI / 4).toFloat(), outPoint)
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private fun calculateCounterCenter(radius: Float, angle: Float, outPoint: PointF) {
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outPoint.x = radius * cos(angle)
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outPoint.y = radius * sin(angle)
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}
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private fun countStr(count: Int) = if (count > maxCount) "$maxCount+" else count.toString()
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companion object {
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val TEXT_APPEARANCE_SUPPORTED_ATTRS = intArrayOf(android.R.attr.textSize, android.R.attr.textColor)
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}
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}
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@ -739,6 +739,8 @@ class RoomDetailFragment :
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avatarRenderer.render(it, roomToolbarAvatarImageView)
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roomToolbarSubtitleView.setTextOrHide(it.topic)
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}
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jumpToBottomView.count = it.notificationCount
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}
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}
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@ -161,13 +161,17 @@
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app:layout_constraintTop_toBottomOf="@+id/roomToolbar"
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tools:visibility="visible" />
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<com.google.android.material.floatingactionbutton.FloatingActionButton
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<im.vector.riotx.core.platform.BadgeFloatingActionButton
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android:id="@+id/jumpToBottomView"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_margin="16dp"
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android:src="@drawable/chevron_down"
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app:backgroundTint="#FFFFFF"
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app:badgeBackgroundColor="@color/riotx_accent"
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app:badgeTextColor="@color/white"
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app:badgeTextPadding="2dp"
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app:badgeTextSize="10sp"
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app:layout_constraintBottom_toTopOf="@id/composerLayout"
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app:layout_constraintEnd_toEndOf="parent"
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app:maxImageSize="16dp"
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@ -0,0 +1,12 @@
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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<declare-styleable name="BadgeFloatingActionButton">
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<attr name="badgeBackgroundColor" format="color" />
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<attr name="badgeTextColor" format="color" />
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<attr name="badgeTextPadding" format="dimension" />
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<attr name="badgeTextSize" format="dimension" />
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</declare-styleable>
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</resources>
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