口口吕
5 years ago
committed by
GitHub
commit
aee154f64c
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package io.legado.app.ui.widget |
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|
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import android.content.Context |
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import android.graphics.Canvas |
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import android.graphics.Paint |
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import android.graphics.Rect |
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import android.graphics.Typeface |
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import android.text.StaticLayout |
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import android.text.TextPaint |
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import android.util.AttributeSet |
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import android.view.View |
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import androidx.annotation.ColorInt |
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import io.legado.app.R |
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import io.legado.app.utils.dp |
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import io.legado.app.utils.getCompatColor |
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import io.legado.app.utils.sp |
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|
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class BatteryView(context: Context, attrs: AttributeSet?) : View(context, attrs) { |
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private var battery = 100 |
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private val textPaint = TextPaint() |
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private var batteryHeight: Int = 0 |
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private var batteryWidth: Int = 0 |
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private val outFrame = Rect() |
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private val polar = Rect() |
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init { |
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textPaint.textSize = 10.sp.toFloat() |
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textPaint.strokeWidth = 1.dp.toFloat() |
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textPaint.isAntiAlias = true |
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textPaint.textAlign = Paint.Align.CENTER |
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textPaint.color = context.getCompatColor(R.color.tv_text_default) |
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textPaint.typeface = Typeface.createFromAsset(context.assets, "number.ttf") |
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batteryHeight = with(textPaint.fontMetrics) { descent - ascent + leading }.toInt() |
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batteryWidth = StaticLayout.getDesiredWidth("100", textPaint).toInt() + 10.dp |
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outFrame.set(1.dp, 1.dp, batteryWidth - 3.dp, batteryHeight - 1.dp) |
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polar.set(outFrame.right, batteryHeight / 3, batteryWidth, batteryHeight * 2 / 3) |
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} |
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { |
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super.onMeasure( |
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MeasureSpec.makeMeasureSpec(batteryWidth, MeasureSpec.EXACTLY), |
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MeasureSpec.makeMeasureSpec(batteryHeight, MeasureSpec.EXACTLY) |
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) |
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} |
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fun setColor(@ColorInt color: Int) { |
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textPaint.color = color |
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invalidate() |
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} |
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fun setBattery(battery: Int) { |
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this.battery = battery |
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invalidate() |
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} |
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override fun onDraw(canvas: Canvas) { |
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super.onDraw(canvas) |
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textPaint.style = Paint.Style.STROKE |
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canvas.drawRect(outFrame, textPaint) |
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textPaint.style = Paint.Style.FILL |
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canvas.drawRect(polar, textPaint) |
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val text = battery.toString() |
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val baseHeight = batteryHeight - textPaint.fontMetrics.descent |
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canvas.drawText(text, outFrame.right / 2.toFloat(), baseHeight, textPaint) |
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} |
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|
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} |
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