97 lines
3.8 KiB
Java
97 lines
3.8 KiB
Java
package com.google.android.material.elevation;
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import android.content.Context;
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import android.graphics.Color;
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import android.view.View;
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import androidx.core.graphics.ColorUtils;
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import com.google.android.material.R;
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import com.google.android.material.color.MaterialColors;
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import com.google.android.material.internal.ViewUtils;
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import com.google.android.material.resources.MaterialAttributes;
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/* loaded from: classes.dex */
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public class ElevationOverlayProvider {
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private static final float FORMULA_MULTIPLIER = 4.5f;
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private static final float FORMULA_OFFSET = 2.0f;
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private static final int OVERLAY_ACCENT_COLOR_ALPHA = (int) Math.round(5.1000000000000005d);
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private final int colorSurface;
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private final float displayDensity;
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private final int elevationOverlayAccentColor;
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private final int elevationOverlayColor;
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private final boolean elevationOverlayEnabled;
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public int getThemeElevationOverlayColor() {
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return this.elevationOverlayColor;
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}
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public int getThemeSurfaceColor() {
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return this.colorSurface;
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}
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public boolean isThemeElevationOverlayEnabled() {
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return this.elevationOverlayEnabled;
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}
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public ElevationOverlayProvider(Context context) {
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this(MaterialAttributes.resolveBoolean(context, R.attr.elevationOverlayEnabled, false), MaterialColors.getColor(context, R.attr.elevationOverlayColor, 0), MaterialColors.getColor(context, R.attr.elevationOverlayAccentColor, 0), MaterialColors.getColor(context, R.attr.colorSurface, 0), context.getResources().getDisplayMetrics().density);
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}
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public ElevationOverlayProvider(boolean z, int i, int i2, int i3, float f) {
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this.elevationOverlayEnabled = z;
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this.elevationOverlayColor = i;
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this.elevationOverlayAccentColor = i2;
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this.colorSurface = i3;
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this.displayDensity = f;
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}
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public int compositeOverlayWithThemeSurfaceColorIfNeeded(float f, View view) {
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return compositeOverlayWithThemeSurfaceColorIfNeeded(f + getParentAbsoluteElevation(view));
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}
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public int compositeOverlayWithThemeSurfaceColorIfNeeded(float f) {
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return compositeOverlayIfNeeded(this.colorSurface, f);
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}
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public int compositeOverlayIfNeeded(int i, float f, View view) {
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return compositeOverlayIfNeeded(i, f + getParentAbsoluteElevation(view));
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}
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public int compositeOverlayIfNeeded(int i, float f) {
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return (this.elevationOverlayEnabled && isThemeSurfaceColor(i)) ? compositeOverlay(i, f) : i;
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}
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public int compositeOverlay(int i, float f, View view) {
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return compositeOverlay(i, f + getParentAbsoluteElevation(view));
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}
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public int compositeOverlay(int i, float f) {
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int i2;
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float calculateOverlayAlphaFraction = calculateOverlayAlphaFraction(f);
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int alpha = Color.alpha(i);
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int layer = MaterialColors.layer(ColorUtils.setAlphaComponent(i, 255), this.elevationOverlayColor, calculateOverlayAlphaFraction);
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if (calculateOverlayAlphaFraction > 0.0f && (i2 = this.elevationOverlayAccentColor) != 0) {
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layer = MaterialColors.layer(layer, ColorUtils.setAlphaComponent(i2, OVERLAY_ACCENT_COLOR_ALPHA));
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}
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return ColorUtils.setAlphaComponent(layer, alpha);
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}
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public int calculateOverlayAlpha(float f) {
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return Math.round(calculateOverlayAlphaFraction(f) * 255.0f);
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}
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public float calculateOverlayAlphaFraction(float f) {
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if (this.displayDensity <= 0.0f || f <= 0.0f) {
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return 0.0f;
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}
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return Math.min(((((float) Math.log1p(f / r0)) * FORMULA_MULTIPLIER) + FORMULA_OFFSET) / 100.0f, 1.0f);
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}
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public float getParentAbsoluteElevation(View view) {
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return ViewUtils.getParentAbsoluteElevation(view);
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}
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private boolean isThemeSurfaceColor(int i) {
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return ColorUtils.setAlphaComponent(i, 255) == this.colorSurface;
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}
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}
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