ADD week 5

02-Easy5/E5/sources/com/google/android/material/elevation/ElevationOverlayProvider.java

@@ -0,0 +1,96 @@
+package com.google.android.material.elevation;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.view.View;
+import androidx.core.graphics.ColorUtils;
+import com.google.android.material.R;
+import com.google.android.material.color.MaterialColors;
+import com.google.android.material.internal.ViewUtils;
+import com.google.android.material.resources.MaterialAttributes;
+
+/* loaded from: classes.dex */
+public class ElevationOverlayProvider {
+    private static final float FORMULA_MULTIPLIER = 4.5f;
+    private static final float FORMULA_OFFSET = 2.0f;
+    private static final int OVERLAY_ACCENT_COLOR_ALPHA = (int) Math.round(5.1000000000000005d);
+    private final int colorSurface;
+    private final float displayDensity;
+    private final int elevationOverlayAccentColor;
+    private final int elevationOverlayColor;
+    private final boolean elevationOverlayEnabled;
+
+    public int getThemeElevationOverlayColor() {
+        return this.elevationOverlayColor;
+    }
+
+    public int getThemeSurfaceColor() {
+        return this.colorSurface;
+    }
+
+    public boolean isThemeElevationOverlayEnabled() {
+        return this.elevationOverlayEnabled;
+    }
+
+    public ElevationOverlayProvider(Context context) {
+        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);
+    }
+
+    public ElevationOverlayProvider(boolean z, int i, int i2, int i3, float f) {
+        this.elevationOverlayEnabled = z;
+        this.elevationOverlayColor = i;
+        this.elevationOverlayAccentColor = i2;
+        this.colorSurface = i3;
+        this.displayDensity = f;
+    }
+
+    public int compositeOverlayWithThemeSurfaceColorIfNeeded(float f, View view) {
+        return compositeOverlayWithThemeSurfaceColorIfNeeded(f + getParentAbsoluteElevation(view));
+    }
+
+    public int compositeOverlayWithThemeSurfaceColorIfNeeded(float f) {
+        return compositeOverlayIfNeeded(this.colorSurface, f);
+    }
+
+    public int compositeOverlayIfNeeded(int i, float f, View view) {
+        return compositeOverlayIfNeeded(i, f + getParentAbsoluteElevation(view));
+    }
+
+    public int compositeOverlayIfNeeded(int i, float f) {
+        return (this.elevationOverlayEnabled && isThemeSurfaceColor(i)) ? compositeOverlay(i, f) : i;
+    }
+
+    public int compositeOverlay(int i, float f, View view) {
+        return compositeOverlay(i, f + getParentAbsoluteElevation(view));
+    }
+
+    public int compositeOverlay(int i, float f) {
+        int i2;
+        float calculateOverlayAlphaFraction = calculateOverlayAlphaFraction(f);
+        int alpha = Color.alpha(i);
+        int layer = MaterialColors.layer(ColorUtils.setAlphaComponent(i, 255), this.elevationOverlayColor, calculateOverlayAlphaFraction);
+        if (calculateOverlayAlphaFraction > 0.0f && (i2 = this.elevationOverlayAccentColor) != 0) {
+            layer = MaterialColors.layer(layer, ColorUtils.setAlphaComponent(i2, OVERLAY_ACCENT_COLOR_ALPHA));
+        }
+        return ColorUtils.setAlphaComponent(layer, alpha);
+    }
+
+    public int calculateOverlayAlpha(float f) {
+        return Math.round(calculateOverlayAlphaFraction(f) * 255.0f);
+    }
+
+    public float calculateOverlayAlphaFraction(float f) {
+        if (this.displayDensity <= 0.0f || f <= 0.0f) {
+            return 0.0f;
+        }
+        return Math.min(((((float) Math.log1p(f / r0)) * FORMULA_MULTIPLIER) + FORMULA_OFFSET) / 100.0f, 1.0f);
+    }
+
+    public float getParentAbsoluteElevation(View view) {
+        return ViewUtils.getParentAbsoluteElevation(view);
+    }
+
+    private boolean isThemeSurfaceColor(int i) {
+        return ColorUtils.setAlphaComponent(i, 255) == this.colorSurface;
+    }
+}

02-Easy5/E5/sources/com/google/android/material/elevation/SurfaceColors.java

@@ -0,0 +1,29 @@
+package com.google.android.material.elevation;
+
+import android.content.Context;
+import com.google.android.material.R;
+import com.google.android.material.color.MaterialColors;
+
+/* loaded from: classes.dex */
+public enum SurfaceColors {
+    SURFACE_0(R.dimen.m3_sys_elevation_level0),
+    SURFACE_1(R.dimen.m3_sys_elevation_level1),
+    SURFACE_2(R.dimen.m3_sys_elevation_level2),
+    SURFACE_3(R.dimen.m3_sys_elevation_level3),
+    SURFACE_4(R.dimen.m3_sys_elevation_level4),
+    SURFACE_5(R.dimen.m3_sys_elevation_level5);
+
+    private final int elevationResId;
+
+    SurfaceColors(int i) {
+        this.elevationResId = i;
+    }
+
+    public int getColor(Context context) {
+        return getColorForElevation(context, context.getResources().getDimension(this.elevationResId));
+    }
+
+    public static int getColorForElevation(Context context, float f) {
+        return new ElevationOverlayProvider(context).compositeOverlay(MaterialColors.getColor(context, R.attr.colorSurface, 0), f);
+    }
+}