2 * Copyright © 2019 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.utils;
20 import android.app.Activity;
21 import android.content.res.ColorStateList;
22 import android.content.res.Resources;
23 import android.util.TypedValue;
25 import androidx.annotation.ColorInt;
26 import androidx.annotation.ColorLong;
27 import androidx.annotation.NonNull;
28 import androidx.lifecycle.MutableLiveData;
30 import net.ktnx.mobileledger.R;
31 import net.ktnx.mobileledger.model.Data;
32 import net.ktnx.mobileledger.model.MobileLedgerProfile;
33 import net.ktnx.mobileledger.ui.HueRing;
35 import java.util.ArrayList;
36 import java.util.Collections;
37 import java.util.Locale;
39 import static java.lang.Math.abs;
40 import static net.ktnx.mobileledger.utils.Logger.debug;
43 public static final int DEFAULT_HUE_DEG = 261;
44 public static final int THEME_HUE_STEP_DEG = 5;
45 private static final float blueLightness = 0.665f;
46 private static final float yellowLightness = 0.350f;
47 private static final int[][] EMPTY_STATES = new int[][]{new int[0]};
48 public static @ColorInt
51 public static int tableRowLightBG;
53 public static int tableRowDarkBG;
55 public static int primary, defaultTextColor;
56 public static int profileThemeId = -1;
57 public static MutableLiveData<Integer> themeWatch = new MutableLiveData<>(0);
58 private static int[] themeIDs =
59 {R.style.AppTheme_NoActionBar_000, R.style.AppTheme_NoActionBar_005,
60 R.style.AppTheme_NoActionBar_010, R.style.AppTheme_NoActionBar_015,
61 R.style.AppTheme_NoActionBar_020, R.style.AppTheme_NoActionBar_025,
62 R.style.AppTheme_NoActionBar_030, R.style.AppTheme_NoActionBar_035,
63 R.style.AppTheme_NoActionBar_040, R.style.AppTheme_NoActionBar_045,
64 R.style.AppTheme_NoActionBar_050, R.style.AppTheme_NoActionBar_055,
65 R.style.AppTheme_NoActionBar_060, R.style.AppTheme_NoActionBar_065,
66 R.style.AppTheme_NoActionBar_070, R.style.AppTheme_NoActionBar_075,
67 R.style.AppTheme_NoActionBar_080, R.style.AppTheme_NoActionBar_085,
68 R.style.AppTheme_NoActionBar_090, R.style.AppTheme_NoActionBar_095,
69 R.style.AppTheme_NoActionBar_100, R.style.AppTheme_NoActionBar_105,
70 R.style.AppTheme_NoActionBar_110, R.style.AppTheme_NoActionBar_115,
71 R.style.AppTheme_NoActionBar_120, R.style.AppTheme_NoActionBar_125,
72 R.style.AppTheme_NoActionBar_130, R.style.AppTheme_NoActionBar_135,
73 R.style.AppTheme_NoActionBar_140, R.style.AppTheme_NoActionBar_145,
74 R.style.AppTheme_NoActionBar_150, R.style.AppTheme_NoActionBar_155,
75 R.style.AppTheme_NoActionBar_160, R.style.AppTheme_NoActionBar_165,
76 R.style.AppTheme_NoActionBar_170, R.style.AppTheme_NoActionBar_175,
77 R.style.AppTheme_NoActionBar_180, R.style.AppTheme_NoActionBar_185,
78 R.style.AppTheme_NoActionBar_190, R.style.AppTheme_NoActionBar_195,
79 R.style.AppTheme_NoActionBar_200, R.style.AppTheme_NoActionBar_205,
80 R.style.AppTheme_NoActionBar_210, R.style.AppTheme_NoActionBar_215,
81 R.style.AppTheme_NoActionBar_220, R.style.AppTheme_NoActionBar_225,
82 R.style.AppTheme_NoActionBar_230, R.style.AppTheme_NoActionBar_235,
83 R.style.AppTheme_NoActionBar_240, R.style.AppTheme_NoActionBar_245,
84 R.style.AppTheme_NoActionBar_250, R.style.AppTheme_NoActionBar_255,
85 R.style.AppTheme_NoActionBar_260, R.style.AppTheme_NoActionBar_265,
86 R.style.AppTheme_NoActionBar_270, R.style.AppTheme_NoActionBar_275,
87 R.style.AppTheme_NoActionBar_280, R.style.AppTheme_NoActionBar_285,
88 R.style.AppTheme_NoActionBar_290, R.style.AppTheme_NoActionBar_295,
89 R.style.AppTheme_NoActionBar_300, R.style.AppTheme_NoActionBar_305,
90 R.style.AppTheme_NoActionBar_310, R.style.AppTheme_NoActionBar_315,
91 R.style.AppTheme_NoActionBar_320, R.style.AppTheme_NoActionBar_325,
92 R.style.AppTheme_NoActionBar_330, R.style.AppTheme_NoActionBar_335,
93 R.style.AppTheme_NoActionBar_340, R.style.AppTheme_NoActionBar_345,
94 R.style.AppTheme_NoActionBar_350, R.style.AppTheme_NoActionBar_355,
96 public static void refreshColors(Resources.Theme theme) {
97 TypedValue tv = new TypedValue();
98 theme.resolveAttribute(R.attr.table_row_dark_bg, tv, true);
99 tableRowDarkBG = tv.data;
100 theme.resolveAttribute(R.attr.table_row_light_bg, tv, true);
101 tableRowLightBG = tv.data;
102 theme.resolveAttribute(R.attr.colorPrimary, tv, true);
104 theme.resolveAttribute(R.attr.textColor, tv, true);
105 defaultTextColor = tv.data;
106 theme.resolveAttribute(R.attr.colorAccent, tv, true);
109 // trigger theme observers
110 themeWatch.postValue(themeWatch.getValue() + 1);
112 public static @ColorInt
113 int hslColor(float hueRatio, float saturation, float lightness) {
114 return 0xff000000 | hslTriplet(hueRatio, saturation, lightness);
116 public static @ColorInt
117 int hslTriplet(float hueRatio, float saturation, float lightness) {
118 @ColorLong long result;
119 float h = hueRatio * 6;
120 float c = (1 - abs(2f * lightness - 1)) * saturation;
121 float h_mod_2 = h % 2;
122 float x = c * (1 - Math.abs(h_mod_2 - 1));
124 float m = lightness - c / 2f;
127 return tupleToColor(c + m, x + m, 0 + m);
129 return tupleToColor(x + m, c + m, 0 + m);
131 return tupleToColor(0 + m, c + m, x + m);
133 return tupleToColor(0 + m, x + m, c + m);
135 return tupleToColor(x + m, 0 + m, c + m);
137 return tupleToColor(c + m, 0 + m, x + m);
139 throw new IllegalArgumentException(String.format(
140 "Unexpected value for h (%1.3f) while converting hsl(%1.3f, %1.3f, %1.3f) to rgb",
141 h, hueRatio, saturation, lightness));
144 public static @ColorInt
145 int tupleToColor(float r, float g, float b) {
146 int r_int = Math.round(255 * r);
147 int g_int = Math.round(255 * g);
148 int b_int = Math.round(255 * b);
149 return (r_int << 16) | (g_int << 8) | b_int;
151 public static @ColorInt
152 int getPrimaryColorForHue(int hueDegrees) {
153 // int result = hsvColor(hueDegrees, 0.61f, 0.95f);
154 float y = hueDegrees - 60;
157 float l = yellowLightness + (blueLightness - yellowLightness) *
158 (float) Math.cos(Math.toRadians(Math.abs(180 - y) / 2f));
159 int result = hslColor(hueDegrees / 360f, 0.845f, l);
160 debug("colors", String.format(Locale.ENGLISH, "getPrimaryColorForHue(%d) = %x", hueDegrees,
164 public static void setupTheme(Activity activity) {
165 MobileLedgerProfile profile = Data.profile.getValue();
166 setupTheme(activity, profile);
168 public static void setupTheme(Activity activity, MobileLedgerProfile profile) {
169 final int themeHue = (profile == null) ? -1 : profile.getThemeHue();
170 setupTheme(activity, themeHue);
172 public static void setupTheme(Activity activity, int themeHue) {
176 if ((themeHue >= 0) && (themeHue < 360)) {
178 if ((themeHue % HueRing.hueStepDegrees) != 0) {
179 Logger.warn("profiles",
180 String.format(Locale.US, "Adjusting unexpected hue %d", themeHue));
181 index = Math.round(1f * themeHue / HueRing.hueStepDegrees);
184 index = themeHue / HueRing.hueStepDegrees;
186 themeId = themeIDs[index];
190 activity.setTheme(R.style.AppTheme_NoActionBar);
192 String.format(Locale.ENGLISH, "Theme hue %d not supported, using the default",
196 activity.setTheme(themeId);
199 refreshColors(activity.getTheme());
202 public static @NonNull
203 ColorStateList getColorStateList() {
204 return getColorStateList(profileThemeId);
206 public static @NonNull
207 ColorStateList getColorStateList(int hue) {
208 return new ColorStateList(EMPTY_STATES, getColors(hue));
210 public static int[] getColors() {
211 return getColors(profileThemeId);
213 public static int[] getColors(int hue) {
214 int[] colors = new int[]{0, 0, 0, 0, 0, 0};
215 for (int i = 0; i < 6; i++, hue = (hue + 60) % 360) {
216 colors[i] = getPrimaryColorForHue(hue);
220 public static int getNewProfileThemeHue(ArrayList<MobileLedgerProfile> profiles) {
221 if ((profiles == null) || (profiles.size() == 0))
222 return DEFAULT_HUE_DEG;
226 if (profiles.size() == 1) {
227 int opposite = profiles.get(0)
228 .getThemeHue() + 180;
230 chosenHue = opposite;
233 ArrayList<Integer> hues = new ArrayList<>();
234 for (MobileLedgerProfile p : profiles) {
235 int hue = p.getThemeHue();
237 hue = DEFAULT_HUE_DEG;
240 Collections.sort(hues);
241 hues.add(hues.get(0));
244 int largestInterval = 0;
245 ArrayList<Integer> largestIntervalStarts = new ArrayList<>();
255 interval = h - lastHue; // 10 -> 20 is a step of 10
257 interval = h + (360 - lastHue); // 350 -> 20 is a step of 30
259 if (interval > largestInterval) {
260 largestInterval = interval;
261 largestIntervalStarts.clear();
262 largestIntervalStarts.add(lastHue);
264 else if (interval == largestInterval) {
265 largestIntervalStarts.add(lastHue);
271 final int chosenIndex = (int) (Math.random() * largestIntervalStarts.size());
272 int chosenIntervalStart = largestIntervalStarts.get(chosenIndex);
274 if (largestInterval % 2 != 0)
275 largestInterval++; // round up the middle point
277 chosenHue = (chosenIntervalStart + (largestInterval / 2)) % 360;
280 final int mod = chosenHue % THEME_HUE_STEP_DEG;
282 if (mod > THEME_HUE_STEP_DEG / 2)
283 chosenHue += (THEME_HUE_STEP_DEG - mod); // 13 += (5-3) = 15
285 chosenHue -= mod; // 12 -= 2 = 10