Assign colors to accounts when "Account color in reports" is checked.

Fixes #495

Author: rivaldi8

app/src/main/java/org/gnucash/android/ui/report/BarChartFragment.java

@@ -229,7 +229,9 @@ private BarData getData() {
                         if (!accountToColorMap.containsKey(account.getUID())) {
                             Integer color;
                             if (mUseAccountColor) {
-                                color = account.getColor();
+                                color = (account.getColor() != Account.DEFAULT_COLOR)
+                                        ? account.getColor()
+                                        : COLORS[accountToColorMap.size() % COLORS.length];
                             } else {
                                 color = COLORS[accountToColorMap.size() % COLORS.length];
                             }

app/src/main/java/org/gnucash/android/ui/report/PieChartFragment.java

@@ -42,7 +42,6 @@
 import org.gnucash.android.R;
 import org.gnucash.android.app.GnuCashApplication;
 import org.gnucash.android.db.AccountsDbAdapter;
-import org.gnucash.android.db.TransactionsDbAdapter;
 import org.gnucash.android.model.Account;
 import org.gnucash.android.model.AccountType;
 
@@ -197,9 +196,15 @@ private PieData getData() {
                         mReportStartTime, mReportEndTime).asDouble();
                 if (balance > 0) {
                     dataSet.addEntry(new Entry((float) balance, dataSet.getEntryCount()));
-                    colors.add(mUseAccountColor
-                            ? account.getColor()
-                            : ReportsActivity.COLORS[(dataSet.getEntryCount() - 1) % ReportsActivity.COLORS.length]);
+                    int color;
+                    if (mUseAccountColor) {
+                        color = (account.getColor() != Account.DEFAULT_COLOR)
+                                ? account.getColor()
+                                : ReportsActivity.COLORS[(dataSet.getEntryCount() - 1) % ReportsActivity.COLORS.length];
+                    } else {
+                        color = ReportsActivity.COLORS[(dataSet.getEntryCount() - 1) % ReportsActivity.COLORS.length];
+                    }
+                    colors.add(color);
                     labels.add(account.getName());
                 }
             }

app/src/main/java/org/gnucash/android/ui/report/ReportSummaryFragment.java

@@ -199,7 +199,9 @@ private PieData getData() {
                         Collections.singletonList(account.getUID()), start, end).asDouble();
                 if (balance > 0) {
                     dataSet.addEntry(new Entry((float) balance, dataSet.getEntryCount()));
-                    colors.add(account.getColor());
+                    colors.add(account.getColor() != Account.DEFAULT_COLOR
+                            ? account.getColor()
+                            : ReportsActivity.COLORS[(dataSet.getEntryCount() - 1) % ReportsActivity.COLORS.length]);
                     labels.add(account.getName());
                 }
             }