import androidx.annotation.NonNull;
import androidx.lifecycle.MutableLiveData;
+import net.ktnx.mobileledger.BuildConfig;
import net.ktnx.mobileledger.R;
import net.ktnx.mobileledger.model.Data;
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;
+ public static final int baseHueStep = 60;
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]};
// trigger theme observers
themeWatch.postValue(themeWatch.getValue() + 1);
}
- public static @ColorLong
- long hsvaColor(float hue, float saturation, float value, float alpha) {
- if (alpha < 0 || alpha > 1)
- throw new IllegalArgumentException("alpha must be between 0 and 1");
-
- @ColorLong long rgb = hsvTriplet(hue, saturation, value);
-
- long a_bits = Math.round(255 * alpha);
- return (a_bits << 24) | rgb;
- }
- public static @ColorInt
- int hsvColor(float hue, float saturation, float value) {
- return 0xff000000 | hsvTriplet(hue, saturation, value);
- }
public static @ColorInt
int hslColor(float hueRatio, float saturation, float lightness) {
return 0xff000000 | hslTriplet(hueRatio, saturation, lightness);
}
public static @ColorInt
- int hsvTriplet(float hue, float saturation, float value) {
- @ColorLong long result;
- 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));
-
- int h = (int) (hue * 6);
- float f = hue * 6 - h;
- float p = value * (1 - saturation);
- float q = value * (1 - f * saturation);
- float t = value * (1 - (1 - f) * saturation);
-
- switch (h) {
- case 0:
- case 6:
- return tupleToColor(value, t, p);
- case 1:
- return tupleToColor(q, value, p);
- case 2:
- return tupleToColor(p, value, t);
- case 3:
- return tupleToColor(p, q, value);
- case 4:
- return tupleToColor(t, p, value);
- case 5:
- return tupleToColor(value, p, q);
- default:
- throw new RuntimeException(String.format("Unexpected value for h (%d) while " +
- "converting hsv(%1.2f, %1.2f, %1.2f) to " +
- "rgb", h, hue, saturation, value));
- }
- }
- public static @ColorInt
int hslTriplet(float hueRatio, float saturation, float lightness) {
@ColorLong long result;
float h = hueRatio * 6;
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",
h, hueRatio, saturation, lightness));
}
-
public static @ColorInt
int tupleToColor(float r, float g, float b) {
int r_int = Math.round(255 * r);
int b_int = Math.round(255 * b);
return (r_int << 16) | (g_int << 8) | b_int;
}
+ public static float baseHueLightness(int baseHueDegrees) {
+ switch (baseHueDegrees % 360) {
+ case 0:
+ return 0.450f; // red
+ case 60:
+ return 0.400f; // yellow
+ case 120:
+ return 0.400f; // green
+ case 180:
+ return 0.400f; // cyan
+ case 240:
+ return 0.750f; // blue
+ case 300:
+ return 0.500f; // magenta
+ default:
+ throw new IllegalStateException(
+ String.format(Locale.US, "baseHueLightness called with invalid value %d",
+ baseHueDegrees));
+ }
+ }
+ public static float hueLightness(int hueDegrees) {
+ int mod = hueDegrees % baseHueStep;
+ int x0 = hueDegrees - mod;
+ int x1 = x0 + baseHueStep;
+
+ float y0 = baseHueLightness(x0);
+ float y1 = baseHueLightness(x1);
+
+ return y0 + (hueDegrees - x0) * (y1 - y0) / (x1 - x0);
+ }
public static @ColorInt
int getPrimaryColorForHue(int hueDegrees) {
-// int result = hsvColor(hueDegrees, 0.61f, 0.95f);
- float y = hueDegrees - 60;
- 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);
+ int result = hslColor(hueDegrees / 360f, 0.845f, hueLightness(hueDegrees));
debug("colors", String.format(Locale.ENGLISH, "getPrimaryColorForHue(%d) = %x", hueDegrees,
result));
return result;
final int themeHue = (profile == null) ? -1 : profile.getThemeHue();
setupTheme(activity, themeHue);
}
- public static void setupTheme(Activity activity, int themeHue) {
+ public static int getThemeIdForHue(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) {
- activity.setTheme(R.style.AppTheme_NoActionBar);
+ themeId = R.style.AppTheme_NoActionBar;
debug("profiles",
String.format(Locale.ENGLISH, "Theme hue %d not supported, using the default",
themeHue));
}
- else {
- activity.setTheme(themeId);
- }
+
+ return themeId;
+ }
+ public static void setupTheme(Activity activity, int themeHue) {
+ int themeId = getThemeIdForHue(themeHue);
+ activity.setTheme(themeId);
refreshColors(activity.getTheme());
}
}
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);
+ if (BuildConfig.DEBUG) {
+ StringBuilder huesSB = new StringBuilder();
+ for (int h : hues) {
+ if (huesSB.length() > 0)
+ huesSB.append(", ");
+ huesSB.append(String.valueOf(h));
+ }
+ debug("profiles", String.format("used hues: %s", huesSB.toString()));
+ }
+ 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);
+
+ debug("profiles",
+ String.format(Locale.US, "Choosing the middle colour between %d and %d",
+ chosenIntervalStart, chosenIntervalStart + largestInterval));
+
+ 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
+ }
+
+ debug("profiles", String.format(Locale.US, "New profile hue: %d", chosenHue));
+
+ return chosenHue;
+ }
}
projects / mobile-ledger.git / blobdiff