allow customizing text on space bar

fixes #956
fixes #875 (set text to space)

app/src/main/java/helium314/keyboard/keyboard/MainKeyboardView.java

@@ -659,6 +659,7 @@ public final class MainKeyboardView extends KeyboardView implements DrawingProxy
         invalidateKey(shortcutKey);
     }
 
+    // the whole language on spacebar thing could probably be simplified quite a bit
     public void startDisplayLanguageOnSpacebar(final boolean subtypeChanged,
             final int languageOnSpacebarFormatType,
             final boolean hasMultipleEnabledIMEsOrSubtypes) {
@@ -799,13 +800,16 @@ public final class MainKeyboardView extends KeyboardView implements DrawingProxy
         paint.setTextAlign(Align.CENTER);
         paint.setTypeface(Typeface.DEFAULT);
         paint.setTextSize(mLanguageOnSpacebarTextSize);
-        final String languageText;
+        final String customText = Settings.getInstance().getCurrent().mSpaceBarText;
-        if (DebugFlags.DEBUG_ENABLED) {
+        final String spaceText;
+        if (!customText.isEmpty()) {
+            spaceText = customText;
+        } else if (DebugFlags.DEBUG_ENABLED) {
             final String l = KeyboardSwitcher.getInstance().getLocaleAndConfidenceInfo();
-            languageText = l != null ? l : layoutLanguageOnSpacebar(paint, keyboard.mId.mSubtype, width);
+            spaceText = l != null ? l : layoutLanguageOnSpacebar(paint, keyboard.mId.mSubtype, width);
         }
         else
-            languageText = layoutLanguageOnSpacebar(paint, keyboard.mId.mSubtype, width);
+            spaceText = layoutLanguageOnSpacebar(paint, keyboard.mId.mSubtype, width);
         // Draw language text with shadow
         final float descent = paint.descent();
         final float textHeight = -paint.ascent() + descent;
@@ -818,7 +822,11 @@ public final class MainKeyboardView extends KeyboardView implements DrawingProxy
         }
         paint.setColor(mLanguageOnSpacebarTextColor);
         paint.setAlpha(mLanguageOnSpacebarAnimAlpha);
-        canvas.drawText(languageText, width / 2f, baseline - descent, paint);
+        if (!fitsTextIntoWidth(width, spaceText, paint)) {
+            final float textWidth = TypefaceUtils.getStringWidth(spaceText, paint);
+            paint.setTextScaleX((width - mLanguageOnSpacebarHorizontalMargin * 2) / textWidth);
+        }
+        canvas.drawText(spaceText, width / 2f, baseline - descent, paint);
         paint.clearShadowLayer();
         paint.setTextScaleX(1.0f);
     }

app/src/main/java/helium314/keyboard/latin/settings/Settings.java

@@ -164,6 +164,7 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
     public static final String PREF_ABC_AFTER_CLIP = "abc_after_clip";
     public static final String PREF_ABC_AFTER_SYMBOL_SPACE = "abc_after_symbol_space";
     public static final String PREF_REMOVE_REDUNDANT_POPUPS = "remove_redundant_popups";
+    public static final String PREF_SPACE_BAR_TEXT = "space_bar_text";
 
     // Emoji
     public static final String PREF_EMOJI_RECENT_KEYS = "emoji_recent_keys";

app/src/main/java/helium314/keyboard/latin/settings/SettingsValues.java

@@ -117,6 +117,7 @@ public class SettingsValues {
     public final boolean mAlphaAfterClipHistoryEntry;
     public final boolean mAlphaAfterSymbolAndSpace;
     public final boolean mRemoveRedundantPopups;
+    public final String mSpaceBarText;
 
     // From the input box
     @NonNull
@@ -264,6 +265,7 @@ public class SettingsValues {
         mAlphaAfterClipHistoryEntry = prefs.getBoolean(Settings.PREF_ABC_AFTER_CLIP, false);
         mAlphaAfterSymbolAndSpace = prefs.getBoolean(Settings.PREF_ABC_AFTER_SYMBOL_SPACE, true);
         mRemoveRedundantPopups = prefs.getBoolean(Settings.PREF_REMOVE_REDUNDANT_POPUPS, true);
+        mSpaceBarText = prefs.getString(Settings.PREF_SPACE_BAR_TEXT, "");
     }
 
     public boolean isApplicationSpecifiedCompletionsOn() {

app/src/main/java/helium314/keyboard/latin/utils/LanguageOnSpacebarUtils.java

@@ -32,8 +32,9 @@ public final class LanguageOnSpacebarUtils {
         // This utility class is not publicly instantiable.
     }
 
-    public static int getLanguageOnSpacebarFormatType(
+    public static int getLanguageOnSpacebarFormatType(@NonNull final RichInputMethodSubtype subtype) {
-            @NonNull final RichInputMethodSubtype subtype) {
+        if (!Settings.getInstance().getCurrent().mSpaceBarText.isEmpty())
+            return FORMAT_TYPE_FULL_LOCALE;
         if (subtype.isNoLanguage()) {
             return FORMAT_TYPE_FULL_LOCALE;
         }

app/src/main/res/values/strings.xml

@@ -305,6 +305,8 @@
     <string name="prefs_keyboard_height_scale">Keyboard height scale</string>
     <!-- Title of the setting for setting bottom padding height -->
     <string name="prefs_bottom_padding_scale">Bottom padding scale</string>
+    <!-- Title of the setting for customizing space bar text -->
+    <string name="prefs_space_bar_text">Custom text on space bar</string>
     <!-- Description for English (UK) keyboard subtype [CHAR LIMIT=25]
          (UK) should be an abbreviation of United Kingdom to fit in the CHAR LIMIT. -->
     <string name="subtype_en_GB">English (UK)</string>

app/src/main/res/xml/prefs_screen_appearance.xml

@@ -101,6 +101,12 @@
             latin:minValue="0"
             latin:maxValue="500" /> <!-- percentage -->
 
+        <EditTextPreference
+            android:key="space_bar_text"
+            android:title="@string/prefs_space_bar_text"
+            android:defaultValue=""
+            android:persistent="true" />
+
     </PreferenceCategory>
 
 </PreferenceScreen>