slideshow: option for no transition

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - mosaic layout
+- slideshow: option for no transition
 
 ## <a id="v1.7.0"></a>[v1.7.0] - 2022-09-19
 

lib/l10n/app_en.arb

@@ -207,6 +207,7 @@
   "viewerTransitionParallax": "Parallax",
   "viewerTransitionFade": "Fade",
   "viewerTransitionZoomIn": "Zoom in",
+  "viewerTransitionNone": "None",
 
   "wallpaperTargetHome": "Home screen",
   "wallpaperTargetLock": "Lock screen",

lib/l10n/app_fr.arb

@@ -167,6 +167,7 @@
   "viewerTransitionParallax": "Parallaxe",
   "viewerTransitionFade": "Fondu",
   "viewerTransitionZoomIn": "Zoom",
+  "viewerTransitionNone": "Aucune",
 
   "wallpaperTargetHome": "Écran d’accueil",
   "wallpaperTargetLock": "Écran de verrouillage",

lib/l10n/app_ko.arb

@@ -167,6 +167,7 @@
   "viewerTransitionParallax": "시차",
   "viewerTransitionFade": "페이드",
   "viewerTransitionZoomIn": "확대",
+  "viewerTransitionNone": "없음",
 
   "wallpaperTargetHome": "홈 화면",
   "wallpaperTargetLock": "잠금화면",

lib/model/settings/enums/enums.dart

@@ -28,6 +28,6 @@ enum VideoControls { play, playSeek, playOutside, none }
 
 enum VideoLoopMode { never, shortOnly, always }
 
-enum ViewerTransition { slide, parallax, fade, zoomIn }
+enum ViewerTransition { slide, parallax, fade, zoomIn, none }
 
 enum WidgetShape { rrect, circle, heart }

lib/model/settings/enums/viewer_transition.dart

@@ -15,6 +15,8 @@ extension ExtraViewerTransition on ViewerTransition {
         return context.l10n.viewerTransitionFade;
       case ViewerTransition.zoomIn:
         return context.l10n.viewerTransitionZoomIn;
+      case ViewerTransition.none:
+        return context.l10n.viewerTransitionNone;
     }
   }
 
@@ -28,6 +30,8 @@ extension ExtraViewerTransition on ViewerTransition {
         return PageTransitionEffects.fade(pageController, index, zoomIn: false);
       case ViewerTransition.zoomIn:
         return PageTransitionEffects.fade(pageController, index, zoomIn: true);
+      case ViewerTransition.none:
+        return PageTransitionEffects.none(pageController, index);
     }
   }
 }

lib/widgets/viewer/controller.dart

@@ -119,4 +119,26 @@ class PageTransitionEffects {
           ),
         );
       };
+
+  static TransitionBuilder none(
+    PageController pageController,
+    int index,
+  ) =>
+      (context, child) {
+        double opacity = 0;
+        double dx = 0;
+        if (pageController.hasClients && pageController.position.haveDimensions) {
+          final position = (pageController.page! - index).clamp(-1.0, 1.0);
+          final width = pageController.position.viewportDimension;
+          opacity = (1 - position.abs()).roundToDouble().clamp(0, 1);
+          dx = position * width;
+        }
+        return Opacity(
+          opacity: opacity,
+          child: Transform.translate(
+            offset: Offset(dx, 0),
+            child: child,
+          ),
+        );
+      };
 }

untranslated.json

@@ -1,9 +1,11 @@
 {
   "de": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
   "el": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
@@ -12,6 +14,7 @@
     "filterNoDateLabel",
     "filterNoTitleLabel",
     "filterRecentlyAddedLabel",
+    "viewerTransitionNone",
     "viewDialogReverseSortOrder",
     "tileLayoutMosaic",
     "sortOrderNewestFirst",
@@ -28,10 +31,12 @@
   ],
 
   "id": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
   "it": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
@@ -40,6 +45,7 @@
     "filterNoDateLabel",
     "filterNoTitleLabel",
     "filterRecentlyAddedLabel",
+    "viewerTransitionNone",
     "viewDialogReverseSortOrder",
     "tileLayoutMosaic",
     "sortOrderNewestFirst",
@@ -57,6 +63,7 @@
   ],
 
   "nl": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
@@ -64,6 +71,7 @@
     "entryInfoActionEditTitleDescription",
     "filterNoDateLabel",
     "filterNoTitleLabel",
+    "viewerTransitionNone",
     "viewDialogReverseSortOrder",
     "tileLayoutMosaic",
     "sortOrderNewestFirst",
@@ -78,6 +86,7 @@
   ],
 
   "ru": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ],
 
@@ -96,6 +105,7 @@
     "viewerTransitionParallax",
     "viewerTransitionFade",
     "viewerTransitionZoomIn",
+    "viewerTransitionNone",
     "wallpaperTargetHome",
     "wallpaperTargetLock",
     "wallpaperTargetHomeLock",
@@ -131,6 +141,7 @@
   ],
 
   "zh": [
+    "viewerTransitionNone",
     "tileLayoutMosaic"
   ]
 }