forked from fekt/hush-android-wallet
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28 lines
1.3 KiB
28 lines
1.3 KiB
package cash.z.ecc.android.ui.util
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import android.text.TextPaint
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import android.text.style.MetricAffectingSpan
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import androidx.core.content.ContextCompat
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import cash.z.ecc.android.R
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import cash.z.ecc.android.ZcashWalletApp
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/**
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* A span used for numbering the parts of an address. It combines a [android.text.style.RelativeSizeSpan],
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* [android.text.style.SuperscriptSpan], and a [android.text.style.ForegroundColorSpan] into one class for efficiency.
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*/
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class AddressPartNumberSpan(
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val proportion: Float = 0.5f,
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val color: Int = ContextCompat.getColor(ZcashWalletApp.instance, R.color.colorPrimary)
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) : MetricAffectingSpan() {
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override fun updateMeasureState(textPaint: TextPaint) {
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textPaint.baselineShift += (textPaint.ascent() / 2).toInt() // from SuperscriptSpan
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textPaint.textSize = textPaint.textSize * proportion // from RelativeSizeSpan
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}
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override fun updateDrawState(textPaint: TextPaint) {
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textPaint.baselineShift += (textPaint.ascent() / 2).toInt() // from SuperscriptSpan (baseline must shift before resizing or else it will not properly align to the top of the text)
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textPaint.textSize = textPaint.textSize * proportion // from RelativeSizeSpan
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textPaint.color = color // from ForegroundColorSpan
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}
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}
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