import net.ktnx.mobileledger.model.MobileLedgerProfile;
import net.ktnx.mobileledger.ui.HueRing;
+import java.util.ArrayList;
+import java.util.Collections;
import java.util.Locale;
import static java.lang.Math.abs;
public class Colors {
public static final int DEFAULT_HUE_DEG = 261;
+ public static final int THEME_HUE_STEP_DEG = 5;
private static final float blueLightness = 0.665f;
private static final float yellowLightness = 0.350f;
private static final int[][] EMPTY_STATES = new int[][]{new int[0]};
int r, g, b;
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));
+ (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;
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);
+ 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 (%1.3f) while converting hsl(%1.3f, %1.3f, %1.3f) to rgb",
int getPrimaryColorForHue(int hueDegrees) {
// int result = hsvColor(hueDegrees, 0.61f, 0.95f);
float y = hueDegrees - 60;
- if (y < 0) y += 360;
+ if (y < 0)
+ y += 360;
float l = yellowLightness + (blueLightness - yellowLightness) *
(float) Math.cos(Math.toRadians(Math.abs(180 - y) / 2f));
int result = hslColor(hueDegrees / 360f, 0.845f, l);
}
public static void setupTheme(Activity activity, int themeHue) {
int themeId = -1;
- // Relies that theme resource IDs are sequential numbers
- if (themeHue == 360) themeHue = 0;
- if ((themeHue >= 0) && (themeHue < 360) && ((themeHue % HueRing.hueStepDegrees) == 0)) {
- themeId = themeIDs[themeHue / HueRing.hueStepDegrees];
+ if (themeHue == 360)
+ themeHue = 0;
+ if ((themeHue >= 0) && (themeHue < 360)) {
+ int index;
+ if ((themeHue % HueRing.hueStepDegrees) != 0) {
+ Logger.warn("profiles",
+ String.format(Locale.US, "Adjusting unexpected hue %d", themeHue));
+ index = Math.round(1f * themeHue / HueRing.hueStepDegrees);
+ }
+ else
+ index = themeHue / HueRing.hueStepDegrees;
+
+ themeId = themeIDs[index];
}
if (themeId < 0) {
}
return colors;
}
+ public static int getNewProfileThemeHue(ArrayList<MobileLedgerProfile> profiles) {
+ if ((profiles == null) || (profiles.size() == 0))
+ return DEFAULT_HUE_DEG;
+
+ int chosenHue;
+
+ if (profiles.size() == 1) {
+ int opposite = profiles.get(0)
+ .getThemeHue() + 180;
+ opposite %= 360;
+ chosenHue = opposite;
+ }
+ else {
+ ArrayList<Integer> hues = new ArrayList<>();
+ for (MobileLedgerProfile p : profiles) {
+ int hue = p.getThemeHue();
+ if (hue == -1)
+ hue = DEFAULT_HUE_DEG;
+ hues.add(hue);
+ }
+ Collections.sort(hues);
+ hues.add(hues.get(0));
+
+ int lastHue = -1;
+ int largestInterval = 0;
+ ArrayList<Integer> largestIntervalStarts = new ArrayList<>();
+
+ for (int h : hues) {
+ if (lastHue == -1) {
+ lastHue = h;
+ continue;
+ }
+
+ int interval;
+ if (h > lastHue)
+ interval = h - lastHue; // 10 -> 20 is a step of 10
+ else
+ interval = h + (360 - lastHue); // 350 -> 20 is a step of 30
+
+ if (interval > largestInterval) {
+ largestInterval = interval;
+ largestIntervalStarts.clear();
+ largestIntervalStarts.add(lastHue);
+ }
+ else if (interval == largestInterval) {
+ largestIntervalStarts.add(lastHue);
+ }
+
+ lastHue = h;
+ }
+
+ final int chosenIndex = (int) (Math.random() * largestIntervalStarts.size());
+ int chosenIntervalStart = largestIntervalStarts.get(chosenIndex);
+
+ if (largestInterval % 2 != 0)
+ largestInterval++; // round up the middle point
+
+ chosenHue = (chosenIntervalStart + (largestInterval / 2)) % 360;
+ }
+
+ final int mod = chosenHue % THEME_HUE_STEP_DEG;
+ if (mod != 0) {
+ if (mod > THEME_HUE_STEP_DEG / 2)
+ chosenHue += (THEME_HUE_STEP_DEG - mod); // 13 += (5-3) = 15
+ else
+ chosenHue -= mod; // 12 -= 2 = 10
+ }
+
+ return chosenHue;
+ }
}