gedoor
4 years ago
parent
c3c63b5464
commit
5d9a07839d
@ -1,156 +0,0 @@ |
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package io.legado.app.lib.theme |
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import android.graphics.Color |
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import androidx.annotation.ColorInt |
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import androidx.annotation.FloatRange |
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import java.util.* |
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object ColorUtils { |
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fun intToString(intColor: Int): String { |
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return String.format("#%06X", 0xFFFFFF and intColor) |
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} |
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fun stripAlpha(@ColorInt color: Int): Int { |
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return -0x1000000 or color |
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} |
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@ColorInt |
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fun shiftColor(@ColorInt color: Int, @FloatRange(from = 0.0, to = 2.0) by: Float): Int { |
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if (by == 1f) return color |
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val alpha = Color.alpha(color) |
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val hsv = FloatArray(3) |
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Color.colorToHSV(color, hsv) |
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hsv[2] *= by // value component |
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return (alpha shl 24) + (0x00ffffff and Color.HSVToColor(hsv)) |
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} |
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@ColorInt |
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fun darkenColor(@ColorInt color: Int): Int { |
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return shiftColor(color, 0.9f) |
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} |
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@ColorInt |
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fun lightenColor(@ColorInt color: Int): Int { |
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return shiftColor(color, 1.1f) |
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} |
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fun isColorLight(@ColorInt color: Int): Boolean { |
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val darkness = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255 |
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return darkness < 0.4 |
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} |
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@ColorInt |
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fun invertColor(@ColorInt color: Int): Int { |
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val r = 255 - Color.red(color) |
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val g = 255 - Color.green(color) |
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val b = 255 - Color.blue(color) |
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return Color.argb(Color.alpha(color), r, g, b) |
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} |
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@ColorInt |
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fun adjustAlpha(@ColorInt color: Int, @FloatRange(from = 0.0, to = 1.0) factor: Float): Int { |
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val alpha = Math.round(Color.alpha(color) * factor) |
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val red = Color.red(color) |
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val green = Color.green(color) |
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val blue = Color.blue(color) |
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return Color.argb(alpha, red, green, blue) |
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} |
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@ColorInt |
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fun withAlpha(@ColorInt baseColor: Int, @FloatRange(from = 0.0, to = 1.0) alpha: Float): Int { |
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val a = Math.min(255, Math.max(0, (alpha * 255).toInt())) shl 24 |
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val rgb = 0x00ffffff and baseColor |
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return a + rgb |
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} |
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/** |
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* Taken from CollapsingToolbarLayout's CollapsingTextHelper class. |
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*/ |
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fun blendColors(color1: Int, color2: Int, @FloatRange(from = 0.0, to = 1.0) ratio: Float): Int { |
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val inverseRatio = 1f - ratio |
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val a = Color.alpha(color1) * inverseRatio + Color.alpha(color2) * ratio |
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val r = Color.red(color1) * inverseRatio + Color.red(color2) * ratio |
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val g = Color.green(color1) * inverseRatio + Color.green(color2) * ratio |
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val b = Color.blue(color1) * inverseRatio + Color.blue(color2) * ratio |
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return Color.argb(a.toInt(), r.toInt(), g.toInt(), b.toInt()) |
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} |
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/** |
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* 按条件的到随机颜色 |
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* |
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* @param alpha 透明 |
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* @param lower 下边界 |
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* @param upper 上边界 |
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* @return 颜色值 |
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*/ |
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fun getRandomColor(alpha: Int, lower: Int, upper: Int): Int { |
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return RandomColor(alpha, lower, upper).color |
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} |
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/** |
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* @return 获取随机色 |
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*/ |
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fun getRandomColor(): Int { |
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return RandomColor(255, 80, 200).color |
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} |
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/** |
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* 随机颜色 |
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*/ |
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class RandomColor(alpha: Int, lower: Int, upper: Int) { |
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private var alpha: Int = 0 |
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private var lower: Int = 0 |
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private var upper: Int = 0 |
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//随机数是前闭 后开 |
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val color: Int |
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get() { |
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val red = getLower() + Random().nextInt(getUpper() - getLower() + 1) |
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val green = getLower() + Random().nextInt(getUpper() - getLower() + 1) |
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val blue = getLower() + Random().nextInt(getUpper() - getLower() + 1) |
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return Color.argb(getAlpha(), red, green, blue) |
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} |
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init { |
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require(upper > lower) { "must be lower < upper" } |
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setAlpha(alpha) |
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setLower(lower) |
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setUpper(upper) |
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} |
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private fun getAlpha(): Int { |
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return alpha |
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} |
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private fun setAlpha(alpha: Int) { |
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var alpha1 = alpha |
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if (alpha1 > 255) alpha1 = 255 |
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if (alpha1 < 0) alpha1 = 0 |
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this.alpha = alpha1 |
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} |
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private fun getLower(): Int { |
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return lower |
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} |
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private fun setLower(lower: Int) { |
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var lower1 = lower |
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if (lower1 < 0) lower1 = 0 |
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this.lower = lower1 |
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} |
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private fun getUpper(): Int { |
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return upper |
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} |
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private fun setUpper(upper: Int) { |
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var upper1 = upper |
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if (upper1 > 255) upper1 = 255 |
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this.upper = upper1 |
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} |
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} |
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} |
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