X-Git-Url: https://git.ktnx.net/?p=mobile-ledger.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2Futils%2FColors.java;h=400b073301bb02c3976053c3b4449b51260c5b35;hp=7b8352efbe6d25329794b8bf69a460c28adac436;hb=b6e102a859413285879cecec286f1381db202314;hpb=09e26d2279484b4dfe0de218b05f075362fff4b5

diff --git a/app/src/main/java/net/ktnx/mobileledger/utils/Colors.java b/app/src/main/java/net/ktnx/mobileledger/utils/Colors.java
index 7b8352ef..400b0733 100644
--- a/app/src/main/java/net/ktnx/mobileledger/utils/Colors.java
+++ b/app/src/main/java/net/ktnx/mobileledger/utils/Colors.java
@@ -2,8 +2,6 @@ package net.ktnx.mobileledger.utils;
 
 import android.app.Activity;
 import android.content.res.Resources;
-import androidx.annotation.ColorInt;
-import androidx.annotation.ColorLong;
 import android.util.Log;
 import android.util.TypedValue;
 
@@ -11,6 +9,11 @@ import net.ktnx.mobileledger.R;
 import net.ktnx.mobileledger.model.Data;
 import net.ktnx.mobileledger.model.MobileLedgerProfile;
 
+import androidx.annotation.ColorInt;
+import androidx.annotation.ColorLong;
+
+import static java.lang.Math.abs;
+
 public class Colors {
     public static final int DEFAULT_HUE_DEG = 261;
     public static @ColorInt
@@ -55,13 +58,18 @@ public class Colors {
         return 0xff000000 | hsvTriplet(hue, saturation, value);
     }
     public static @ColorInt
+    int hslColor(float hue, float saturation, float lightness) {
+        return 0xff000000 | hslTriplet(hue, saturation, lightness);
+    }
+    public static @ColorInt
     int hsvTriplet(float hue, float saturation, float value) {
         @ColorLong long result;
         int r, g, b;
 
-        if ((hue < 0) || (hue > 1) || (saturation < 0) || (saturation > 1) || (value < 0) ||
-            (value > 1)) throw new IllegalArgumentException(
-                "hue, saturation, value and alpha must all be between 0 and 1");
+        if ((hue < -0.00005) || (hue > 1.0000005) || (saturation < 0) || (saturation > 1) ||
+            (value < 0) || (value > 1)) throw new IllegalArgumentException(String.format(
+                "hue, saturation, value and alpha must all be between 0 and 1. Arguments given: " +
+                "hue=%1.5f, sat=%1.5f, val=%1.5f", hue, saturation, value));
 
         int h = (int) (hue * 6);
         float f = hue * 6 - h;
@@ -89,6 +97,27 @@ public class Colors {
                                                          "rgb", h, hue, saturation, value));
         }
     }
+    public static @ColorInt
+    int hslTriplet(float hue, float saturation, float lightness) {
+        @ColorLong long result;
+        float h = hue * 6;
+        float c = (1 - abs(2f * lightness - 1)) * saturation;
+        float h_mod_2 = h % 2;
+        float x = c * (1 - Math.abs(h_mod_2 - 1));
+        int r, g, b;
+        float m = lightness - c / 2f;
+
+        if (h < 1 || h == 6) return tupleToColor(c + m, x + m, 0 + m);
+        if (h < 2) return tupleToColor(x + m, c + m, 0 + m);
+        if (h < 3) return tupleToColor(0 + m, c + m, x + m);
+        if (h < 4) return tupleToColor(0 + m, x + m, c + m);
+        if (h < 5) return tupleToColor(x + m, 0 + m, c + m);
+        if (h < 6) return tupleToColor(c + m, 0 + m, x + m);
+
+        throw new IllegalArgumentException(String.format(
+                "Unexpected value for h (%d) while converting hsl(%1.2f, %1.2f, %1.2f) to rgb", h,
+                hue, saturation, lightness));
+    }
 
     public static @ColorInt
     int tupleToColor(float r, float g, float b) {
@@ -99,11 +128,14 @@ public class Colors {
     }
     public static @ColorInt
     int getPrimaryColorForHue(int degrees) {
+        // 0/360f becomes -0.000something for some reason
+        if (degrees == 0) return getPrimaryColorForHue(0f);
         return getPrimaryColorForHue(degrees / 360f);
     }
     public static @ColorInt
     int getPrimaryColorForHue(float hue) {
-        int result = hsvColor(hue, 0.61f, 0.95f);
+//        int result = hsvColor(hue, 0.61f, 0.95f);
+        int result = hslColor(hue, 0.60f, 0.60f);
         Log.d("colors", String.format("getPrimaryColorForHue(%1.2f) = %x", hue, result));
         return result;
     }