Add invert scan option

git-svn-id: https://zxing.googlecode.com/svn/trunk@2571 59b500cc-1b3d-0410-9834-0bbf25fbcc57

android/res/values-ar/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">تقوم بتحسين عملية المسح في إضاءة ضعيفة في بعض الهواتف، ولكن يمكن أن يتسبب في حدوث سطوع</string>
   <string name="preferences_front_light_title">استخدم إضاءة أمامية</string>
   <string name="preferences_general_title">إعدادات عامة</string>
+  <string name="preferences_invert_scan_summary">مسح الباركود لأبيض على خلفية سوداء. لا تتوفر على بعض الأجهزة.</string>
+  <string name="preferences_invert_scan_title">عكس المسح الضوئي</string>
   <string name="preferences_name">إعدادات</string>
   <string name="preferences_play_beep_title">صوت تنبيه</string>
   <string name="preferences_remember_duplicates_summary">بفحص مخزن متعددة من نفس الباركود في التاريخ</string>

android/res/values-bg/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Подобрява четенето при лошо осветление, но предизвиква отблясъци. Само за някои модели.</string>
   <string name="preferences_front_light_title">Използвай фенерче</string>
   <string name="preferences_general_title">Общи настройки</string>
+  <string name="preferences_invert_scan_summary">Сканиране за бели баркодове на черен фон. Не е на разположение на някои устройства.</string>
+  <string name="preferences_invert_scan_title">Обръщане на сканиране</string>
   <string name="preferences_name">Настройки</string>
   <string name="preferences_play_beep_title">Издаване на звук</string>
   <string name="preferences_remember_duplicates_summary">Записвай множество сканирания на един и същи баркод в историята</string>

android/res/values-ca/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Millora l\'escaneig amb poca llum en alguns dispositius, però pot produir enlluernament. No funciona en tots els dispositius.</string>
   <string name="preferences_front_light_title">Usa el llum frontal</string>
   <string name="preferences_general_title">Configuració general</string>
+  <string name="preferences_invert_scan_summary">Escanejar codis de barres blanques sobre fons negre. No disponible en alguns dispositius.</string>
+  <string name="preferences_invert_scan_title">Invertir exploració</string>
   <string name="preferences_name">Configuració</string>
   <string name="preferences_play_beep_title">Beep</string>
   <string name="preferences_remember_duplicates_summary">Desa diversos escanejos del mateix codi de barres a l\'historial</string>

android/res/values-cs/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Zlepšuje skenování při slabém osvětlení na některých telefonech, ale může způsobit oslnění. Nefunguje na všech telefonech.</string>
   <string name="preferences_front_light_title">Použít světlo</string>
   <string name="preferences_general_title">Hlavní nastavení</string>
+  <string name="preferences_invert_scan_summary">Skenování čárových kódů pro bílé na černém pozadí. Není k dispozici v některých zařízeních.</string>
+  <string name="preferences_invert_scan_title">Obrátit skenování</string>
   <string name="preferences_name">Nastavení</string>
   <string name="preferences_play_beep_title">Zvuky</string>
   <string name="preferences_remember_duplicates_summary">Duplikáty čárových kódú v historii ukládat samostatně, nebo jako jeden čárový kód</string>

android/res/values-da/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Forbedrer aflæsning i svagt lys på nogle telefoner, men kan medføre genskær. Virker ikke på alle telefoner.</string>
   <string name="preferences_front_light_title">Brug frontlys</string>
   <string name="preferences_general_title">Generelle indstillinger</string>
+  <string name="preferences_invert_scan_summary">Scan for hvide stregkoder på sort baggrund. Ikke tilgængelig på nogle enheder.</string>
+  <string name="preferences_invert_scan_title">Inverter scanning</string>
   <string name="preferences_name">Indstillinger</string>
   <string name="preferences_play_beep_title">Bip</string>
   <string name="preferences_remember_duplicates_summary">Gem flere scanninger af de samme stregkoder i Historik</string>

android/res/values-de/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Verbessert bei einigen Mobiltelefonen das Scannen bei schwachem Licht, kann aber Überbelichtung verursachen. Funktioniert nicht mit allen Handys.</string>
   <string name="preferences_front_light_title">Foto LED einschalten</string>
   <string name="preferences_general_title">Allgemeine Einstellungen</string>
+  <string name="preferences_invert_scan_summary">Für weiße Barcodes auf schwarzem Hintergrund. Nicht bei allen Geräten verfügbar.</string>
+  <string name="preferences_invert_scan_title">Negativ-Scan</string>
   <string name="preferences_name">Einstellungen</string>
   <string name="preferences_play_beep_title">Piepsen</string>
   <string name="preferences_remember_duplicates_summary">Speichern mehrerer Scans des gleichen Barcodes im Verlauf</string>

android/res/values-el/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Βελτιώνει το σκανάρισμα με χαμηλο φωτισμό σε μερικά κινητά, ίσως όμως προκαλέσει λάμψη. Δουλεύει σε μερικά κινητά.</string>
   <string name="preferences_front_light_title">Χρήση μπροστινού φακού</string>
   <string name="preferences_general_title">Γενικές ρυθμίσεις</string>
+  <string name="preferences_invert_scan_summary">Σάρωση για τη λευκή barcodes σε μαύρο φόντο. Δεν διατίθεται σε ορισμένες συσκευές.</string>
+  <string name="preferences_invert_scan_title">Αντιστροφή της σάρωσης</string>
   <string name="preferences_name">Ρυθμίσεις</string>
   <string name="preferences_play_beep_title">Μπιπ</string>
   <string name="preferences_remember_duplicates_summary">Αποθήκευση πολλαπλών σκαναρισμάτων του ίδιου barcode στο ιστορικό</string>

android/res/values-es/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Mejora la exploración en condiciones de poca luz en algunos teléfonos, pero puede causar deslumbramiento. No funciona en todos los teléfonos.</string>
   <string name="preferences_front_light_title">Utilizar luz delantera</string>
   <string name="preferences_general_title">Configuración general</string>
+  <string name="preferences_invert_scan_summary">Escanear códigos de barras blancas sobre fondo negro. No disponible en algunos dispositivos.</string>
+  <string name="preferences_invert_scan_title">Invertir exploración</string>
   <string name="preferences_name">Configuración</string>
   <string name="preferences_play_beep_title">Bip</string>
   <string name="preferences_remember_duplicates_summary">Almacenar múltiples escáneres del mismo código de barras en el Historial.</string>

android/res/values-eu/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Eskaneatzea hobetzen du zenbait telefonotan argiztapena txikia denean, baina distirak eragin ditzake. Ez du telefono guztietan funtzionatzen.</string>
   <string name="preferences_front_light_title">Erabili aurreko argia</string>
   <string name="preferences_general_title">Ezarpen orokorrak</string>
+  <string name="preferences_invert_scan_summary">Atzeko plano beltzean kodeak zuri eskaneatzeko. Zenbait gailuk ez dago eskuragarri.</string>
+  <string name="preferences_invert_scan_title">Alderantzikatu eskaneatzeko</string>
   <string name="preferences_name">Ezarpenak</string>
   <string name="preferences_play_beep_title">Soinu-seinalea</string>
   <string name="preferences_remember_duplicates_summary">Gorde barra-kode beraren hainbat eskaneatze Historian</string>

android/res/values-fi/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Salamavalon käyttö saattaa auttaa hämärässä, mutta se saattaa aiheuttaa myös häikäisyä. Ei toimi kaikissa puhelimissa.</string>
   <string name="preferences_front_light_title">Käytä valoa</string>
   <string name="preferences_general_title">Yleiset asetukset</string>
+  <string name="preferences_invert_scan_summary">Etsi valkoinen viivakoodeja mustalla taustalla. Ole käytettävissä kaikissa laitteissa.</string>
+  <string name="preferences_invert_scan_title">Invert skannata</string>
   <string name="preferences_name">Asetukset</string>
   <string name="preferences_play_beep_title">Piippaus</string>
   <string name="preferences_remember_duplicates_summary">Jos sama viivakoodi skannetaan useasti, tallenna jokainen skannauskerta historiaan</string>

android/res/values-fr/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Allumer la lampe derrière le téléphone quand la lumière ambiante est faible. Peut provoquer des reflets et ne fonctionne pas sur tous les téléphones.</string>
   <string name="preferences_front_light_title">Flash</string>
   <string name="preferences_general_title">Paramètres généraux</string>
+  <string name="preferences_invert_scan_summary">Balayage pour les codes barres blanches sur fond noir. Non disponible sur certains appareils.</string>
+  <string name="preferences_invert_scan_title">Inverser scan</string>
   <string name="preferences_name">Paramètres</string>
   <string name="preferences_play_beep_title">Bip</string>
   <string name="preferences_remember_duplicates_summary">Enregistrer dans l\'historique les lectures multiples d\'un même code-barres</string>

android/res/values-he/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">משפר את הסריקה בתאורה נמוכה בטלפונים מסוימים, אך עשוי לגרום לסנוור. לא עובד בכל הטלפונים.</string>
   <string name="preferences_front_light_title">השתמש באור הקדמי</string>
   <string name="preferences_general_title">הגדרות כלליות</string>
+  <string name="preferences_invert_scan_summary">סרוק ברקודים לבן על רקע שחור. לא זמין על התקנים מסוימים.</string>
+  <string name="preferences_invert_scan_title">היפוך לסרוק</string>
   <string name="preferences_name">הגדרות</string>
   <string name="preferences_play_beep_title">צפצוף</string>
   <string name="preferences_remember_duplicates_summary">אחסן מספר סריקות של אותו הברקוד בהיסטוריה</string>

android/res/values-hi/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">कुछ फोन पर कम रोशनी में स्कैनिंग बढ़ाता है, लेकिन चमक का कारण हो सकता है. सभी फोन पर काम नहीं करता.</string>
   <string name="preferences_front_light_title">सामने प्रकाश का उपयोग करें</string>
   <string name="preferences_general_title">सामान्य सेटिंग्स</string>
+  <string name="preferences_invert_scan_summary">काली पृष्ठभूमि पर सफेद बारकोड के लिए स्कैन करें. कुछ उपकरणों पर उपलब्ध नहीं है.</string>
+  <string name="preferences_invert_scan_title">स्कैन उलटें</string>
   <string name="preferences_name">सेटिंग्स</string>
   <string name="preferences_play_beep_title">भोंपू</string>
   <string name="preferences_remember_duplicates_summary">इतिहास में एक ही बारकोड के स्टोर एकाधिक स्कैन</string>

android/res/values-hu/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Javítja a szkennelést kevés fény mellett néhány telefonon, de csillogást okozhat. Nem minden telefonon működik.</string>
   <string name="preferences_front_light_title">Kamera LED használata</string>
   <string name="preferences_general_title">Általános beállítások</string>
+  <string name="preferences_invert_scan_summary">Scan fehér vonalkódok a fekete háttér. Nem csak egyes eszközöket.</string>
+  <string name="preferences_invert_scan_title">Invert szkennelés</string>
   <string name="preferences_name">Beállítások</string>
   <string name="preferences_play_beep_title">Sípolás</string>
   <string name="preferences_remember_duplicates_summary">Ugyanannak a vonalkódnak több szkennelt képét is tárolja az Előzményekben</string>

android/res/values-id/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Meningkatkan scanning dalam cahaya rendah pada beberapa ponsel, namun dapat menyebabkan silau. Tidak bekerja pada semua ponsel.</string>
   <string name="preferences_front_light_title">Gunakan lampu depan</string>
   <string name="preferences_general_title">Pengaturan umum</string>
+  <string name="preferences_invert_scan_summary">Memindai barcode putih pada latar belakang hitam. Tidak tersedia pada beberapa perangkat.</string>
+  <string name="preferences_invert_scan_title">Balikkan memindai</string>
   <string name="preferences_name">Pengaturan</string>
   <string name="preferences_play_beep_title">Beep</string>
   <string name="preferences_remember_duplicates_summary">Simpan beberapa pindaian dari barcode yang sama di dalam Riwayat</string>

android/res/values-it/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Migliora la scansione con poca luminosità su alcuni telefoni, ma può provocare abbagliamento. Non funziona su tutti i telefoni.</string>
   <string name="preferences_front_light_title">Usa luce frontale</string>
   <string name="preferences_general_title">Impostazioni generali</string>
+  <string name="preferences_invert_scan_summary">Scansione dei codici a barre bianche su sfondo nero. Non disponibile su alcuni dispositivi.</string>
+  <string name="preferences_invert_scan_title">Invertire la scansione</string>
   <string name="preferences_name">Impostazioni</string>
   <string name="preferences_play_beep_title">Suona</string>
   <string name="preferences_remember_duplicates_summary">Mantieni scansioni multiple del codice a barre nella stessa Cronologia</string>

android/res/values-iw/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">משפר את הסריקה בתאורה נמוכה בטלפונים מסוימים, אך עשוי לגרום לסנוור. לא עובד בכל הטלפונים.</string>
   <string name="preferences_front_light_title">השתמש באור הקדמי</string>
   <string name="preferences_general_title">הגדרות כלליות</string>
+  <string name="preferences_invert_scan_summary">סרוק ברקודים לבן על רקע שחור. לא זמין על התקנים מסוימים.</string>
+  <string name="preferences_invert_scan_title">היפוך לסרוק</string>
   <string name="preferences_name">הגדרות</string>
   <string name="preferences_play_beep_title">צפצוף</string>
   <string name="preferences_remember_duplicates_summary">אחסן מספר סריקות של אותו הברקוד בהיסטוריה</string>

android/res/values-ja/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">暗い場所でのスキャンを向上させるためフロントライトを有効にします</string>
   <string name="preferences_front_light_title">フロントライト</string>
   <string name="preferences_general_title">一般設定</string>
+  <string name="preferences_invert_scan_summary">黒地に白のバーコードのスキャン。一部のデバイスでは使用できません。</string>
+  <string name="preferences_invert_scan_title">スキャンを反転</string>
   <string name="preferences_name">設定</string>
   <string name="preferences_play_beep_title">通知音</string>
   <string name="preferences_remember_duplicates_summary">同じQRコードでも履歴に記録する</string>

android/res/values-ko/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">특정 기기에서는 어두운 환경에서의 스캐닝 기능을 향상 시키지만 너무 밝을 수도 있습니다. 모든 기기에서 작동되지 않습니다.</string>
   <string name="preferences_front_light_title">플래시 사용하기</string>
   <string name="preferences_general_title">일반 설정</string>
+  <string name="preferences_invert_scan_summary">검정 바탕에 흰색 바코드에 대한 스캔. 일부 장치에서 사용할 수 없습니다.</string>
+  <string name="preferences_invert_scan_title">스캔 반전</string>
   <string name="preferences_name">설정</string>
   <string name="preferences_play_beep_title">전자음</string>
   <string name="preferences_remember_duplicates_summary">복수의 같은 바코드를 기록에 저장</string>

android/res/values-nl/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Verbetert het scannen bij weinig licht bij sommige telefoons, maar kan schittering veroorzaken. Werkt niet op alle telefoons.</string>
   <string name="preferences_front_light_title">Flitser gebruiken</string>
   <string name="preferences_general_title">Algemene instellingen</string>
+  <string name="preferences_invert_scan_summary">Scan naar witte barcodes op een zwarte achtergrond. Niet beschikbaar op sommige apparaten.</string>
+  <string name="preferences_invert_scan_title">Scan omkeren</string>
   <string name="preferences_name">Instellingen</string>
   <string name="preferences_play_beep_title">Piepen</string>
   <string name="preferences_remember_duplicates_summary">Meerdere scans van dezelfde barcode opslaan in de geschiedenis</string>

android/res/values-pl/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Polepsza skanowanie przy małej ilości światła w niektórych telefonach, ale może powodować odbłysk. Nie działa na wszystkich telefonach.</string>
   <string name="preferences_front_light_title">Używaj lampy frontowej</string>
   <string name="preferences_general_title">Ustawienia ogólne</string>
+  <string name="preferences_invert_scan_summary">Skanowanie kodów kreskowych białego na czarnym tle. Nie dostępne w niektórych urządzeniach.</string>
+  <string name="preferences_invert_scan_title">Odwróć skanowania</string>
   <string name="preferences_name">Ustawienia</string>
   <string name="preferences_play_beep_title">Piszcz</string>
   <string name="preferences_remember_duplicates_summary">Przechowywanie wielu skanowanie kodów kreskowych w tej samej historii</string>

android/res/values-pt/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Melhora a leitura em luz fraca em alguns telefones, mas pode causar clarões. Não disponível em certos dispositivos.</string>
   <string name="preferences_front_light_title">Usar luz da frente</string>
   <string name="preferences_general_title">Definições Gerais</string>
+  <string name="preferences_invert_scan_summary">Procurar por códigos de barras brancos em fundo preto. Não disponível em certos dispositivos.</string>
+  <string name="preferences_invert_scan_title">Inverter leitura</string>
   <string name="preferences_name">Definições</string>
   <string name="preferences_play_beep_title">Apitar</string>
   <string name="preferences_remember_duplicates_summary">Guardar pesquisas múltiplas do mesmo código de barras no histórico</string>

android/res/values-ru/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Улучшает распознавание в условиях низкой освещенности, но может вызвать блики. Работает не на всех устройствах.</string>
   <string name="preferences_front_light_title">Фонарик</string>
   <string name="preferences_general_title">Общие настройки</string>
+  <string name="preferences_invert_scan_summary">Сканирование штрих-кодов для белого на черном фоне. Не применяется на некоторых устройствах.</string>
+  <string name="preferences_invert_scan_title">Обратить сканирования</string>
   <string name="preferences_name">Настройки</string>
   <string name="preferences_play_beep_title">Пищать</string>
   <string name="preferences_remember_duplicates_summary">Сохранять в истории результат сканирования одного и того же штрих-кода</string>

android/res/values-sk/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Použiť prisvetlenie</string>
   <string name="preferences_front_light_title">Použite predné svetlo</string>
   <string name="preferences_general_title">Všeobecné nastavenia</string>
+  <string name="preferences_invert_scan_summary">Skenovať biele čiarové kódy na čiernom pozadí. Nie je k dispozícii na všetkých zariadeniach.</string>
+  <string name="preferences_invert_scan_title">Invertované skenovanie</string>
   <string name="preferences_name">Nastavenia</string>
   <string name="preferences_play_beep_title">Zvuková signalizácia</string>
   <string name="preferences_remember_duplicates_summary">Uložiť viacnásobné skenovanie do jednej histórie čiarového kódu</string>

android/res/values-sl/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Izboljša branje pri slabi svetlobi na nekaterih telefonih, a lahko povzroči blesk. Ne deluje na vseh telefonih.</string>
   <string name="preferences_front_light_title">Uporabite sprednjo luč</string>
   <string name="preferences_general_title">Splošne nastavitve</string>
+  <string name="preferences_invert_scan_summary">Scan za beli črtne kode na črni podlagi. Ni na voljo na nekaterih napravah.</string>
+  <string name="preferences_invert_scan_title">Obrni skeniranje</string>
   <string name="preferences_name">Nastavitve</string>
   <string name="preferences_play_beep_title">Pisk</string>
   <string name="preferences_remember_duplicates_summary">Shranjevanje več skandiranje iste črtne kode v zgodovini</string>

android/res/values-sv/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Förbättrar inskanning i svag belysing på vissa telefoner, men kan orsaka bländning. Ej tillgängligt på vissa enheter.</string>
   <string name="preferences_front_light_title">Använd frontljus</string>
   <string name="preferences_general_title">Grundläggande inställningar</string>
+  <string name="preferences_invert_scan_summary">Skanna in vita streckkoder mot svart bakgrund. Ej tillgängligt på vissa enheter. </string>
+  <string name="preferences_invert_scan_title">Invertera inskanning</string>
   <string name="preferences_name">Inställningar</string>
   <string name="preferences_play_beep_title">Ton</string>
   <string name="preferences_remember_duplicates_summary">Lagra flera inskanningar av samma streckkod i historik</string>

android/res/values-tr/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">Bazı telefonlarda düşük ışıkta taramayı iyileştirir, ancak parlamaya neden olabilir. Tüm telefonlarda sonuç vermez.</string>
   <string name="preferences_front_light_title">Ön ışığı kullan</string>
   <string name="preferences_general_title">Genel ayarlar</string>
+  <string name="preferences_invert_scan_summary">Siyah zemin üzerine beyaz barkod tarama. Bazı cihazlar mevcut değildir.</string>
+  <string name="preferences_invert_scan_title">Tarama haricindekileri</string>
   <string name="preferences_name">Ayarlar</string>
   <string name="preferences_play_beep_title">Bip</string>
   <string name="preferences_remember_duplicates_summary">Aynı barkoda ait farklı taramaları kayıtlarda depola</string>

android/res/values-zh-rCN/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">前灯可用时，打开前灯</string>
   <string name="preferences_front_light_title">前灯</string>
   <string name="preferences_general_title">一般设置</string>
+  <string name="preferences_invert_scan_summary">黑色背景上的白色条形码扫描。在某些设备上。</string>
+  <string name="preferences_invert_scan_title">反向扫描</string>
   <string name="preferences_name">设置</string>
   <string name="preferences_play_beep_title">提示音</string>
   <string name="preferences_remember_duplicates_summary">在历史记录中保存重复记录</string>

android/res/values-zh-rTW/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_summary">改善在低光源的環境下掃描的成功率，但有可能造成過度曝光的現象</string>
   <string name="preferences_front_light_title">使用前光源</string>
   <string name="preferences_general_title">一般設定</string>
+  <string name="preferences_invert_scan_summary">條碼掃描白色背景上的黑色。某些設備上無法使用。</string>
+  <string name="preferences_invert_scan_title">反向掃描</string>
   <string name="preferences_name">設定</string>
   <string name="preferences_play_beep_title">提示音</string>
   <string name="preferences_remember_duplicates_summary">在紀錄中重複儲存相同的條碼</string>

android/res/values/strings.xml

@@ -111,6 +111,8 @@
   <string name="preferences_front_light_off">Off</string>
   <string name="preferences_front_light_on">On</string>
   <string name="preferences_general_title">General settings</string>
+  <string name="preferences_invert_scan_title">Invert scan</string>
+  <string name="preferences_invert_scan_summary">Scan for white barcodes on black background. Not available on some devices.</string>  
   <string name="preferences_name">Settings</string>
   <string name="preferences_play_beep_title">Beep</string>
   <string name="preferences_remember_duplicates_summary">Store multiple scans of the same barcode in History</string>

android/res/xml/preferences.xml

@@ -71,6 +71,11 @@
         android:key="preferences_auto_focus"
         android:defaultValue="true"
         android:title="@string/preferences_auto_focus_title"/>
+    <CheckBoxPreference
+        android:key="preferences_invert_scan"
+        android:defaultValue="false"
+        android:title="@string/preferences_invert_scan_title"
+        android:summary="@string/preferences_invert_scan_summary"/>
     <CheckBoxPreference
         android:key="preferences_bulk_mode"
         android:defaultValue="false"

android/src/com/google/zxing/client/android/PreferencesActivity.java

@@ -47,6 +47,7 @@ public final class PreferencesActivity extends PreferenceActivity
   public static final String KEY_REMEMBER_DUPLICATES = "preferences_remember_duplicates";
   public static final String KEY_SUPPLEMENTAL = "preferences_supplemental";
   public static final String KEY_AUTO_FOCUS = "preferences_auto_focus";
+  public static final String KEY_INVERT_SCAN = "preferences_invert_scan";  
   public static final String KEY_SEARCH_COUNTRY = "preferences_search_country";
 
   public static final String KEY_DISABLE_CONTINUOUS_FOCUS = "preferences_disable_continuous_focus";

android/src/com/google/zxing/client/android/camera/CameraConfigurationManager.java

@@ -118,6 +118,14 @@ final class CameraConfigurationManager {
       parameters.setFocusMode(focusMode);
     }
 
+    if (prefs.getBoolean(PreferencesActivity.KEY_INVERT_SCAN, false)) {
+      String colorMode = findSettableValue(parameters.getSupportedColorEffects(),
+                                           Camera.Parameters.EFFECT_NEGATIVE);
+      if (colorMode != null) {
+        parameters.setColorEffect(colorMode);
+      }
+    }
+
     parameters.setPreviewSize(cameraResolution.x, cameraResolution.y);
     camera.setParameters(parameters);
   }