feat: zoom percentage badge at bottom center (v1.7.1)

- Percentage shown between the prev/next buttons, together with the hover
  controls, on a translucent background.
- Value is the on-screen scale relative to the image's real pixel size
  (100% = 1:1); updated on wheel zoom, fill/fit toggle, image change and
  window resize.
- Pixel-size header parsing moved to lib/services/image_header.dart, shared
  with the settings file-properties panel.
- dist: 1.7.1 .deb replaces the tracked 1.7.0 package.

.gitignore

@@ -49,7 +49,7 @@ app.*.map.json
 *.deb
 *.tar.gz
 *.exe
-!dist/imajviewer_1.7.0_amd64.deb
+!dist/imajviewer_1.7.1_amd64.deb
 !dist/imajviewer_setup_1.1.0.exe
 deb/usr/lib/imajviewer/
 release/

CHANGELOG.md

@@ -4,6 +4,19 @@ All notable changes to imajViewer are documented in this file.
 
 ## [Unreleased]
 
+## [1.7.1] - 2026-10-25
+
+### Added
+- Zoom percentage badge at the bottom center, between the previous/next buttons: shown
+  together with the hover controls, translucent background, live while wheeling
+  (100% = one image pixel per screen pixel), recomputed on fill/fit toggle, image
+  change and window resize.
+
+### Changed
+- Image header parsing (pixel size without decoding) moved from the viewer screen into
+  `lib/services/image_header.dart`; the settings file-properties panel and the zoom badge
+  use the same code.
+
 ## [1.7.0] - 2026-10-20
 
 ### Added

lib/screens/viewer_screen.dart

@@ -1,13 +1,12 @@
 import 'dart:async';
 import 'dart:io';
-import 'dart:typed_data';
 import 'package:flutter/material.dart';
-import 'package:image/image.dart' as img;
 import 'package:window_manager/window_manager.dart';
 import 'package:desktop_drop/desktop_drop.dart';
 import 'package:pdf/pdf.dart';
 import 'package:pdf/widgets.dart' as pw;
 import 'package:printing/printing.dart';
+import '../services/image_header.dart';
 import '../services/image_manager.dart';
 import '../services/file_handler.dart';
 import '../services/crop_save_service.dart';
@@ -18,7 +17,7 @@ import '../shortcuts/app_shortcuts.dart';
 import '../services/window_persistence.dart';
 import '../l10n/app_localizations.dart';
 
-const appVersion = '1.7.0';
+const appVersion = '1.7.1';
 
 class ViewerScreen extends StatefulWidget {
   final List<String> initialFiles;
@@ -33,6 +32,7 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
   bool _controlsVisible = false;
   Timer? _saveDebounce;
   Rect _lastBounds = Rect.zero;
+  final ValueNotifier<double> _zoomPercent = ValueNotifier<double>(100);
   final GlobalKey<ImageCanvasState> _canvasKey = GlobalKey<ImageCanvasState>();
 
   @override
@@ -53,6 +53,7 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
     windowManager.removeListener(this);
     ImageManager.instance.removeListener(_onImageManagerChanged);
     _saveDebounce?.cancel();
+    _zoomPercent.dispose();
     super.dispose();
   }
 
@@ -222,16 +223,8 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
     final l10n = AppLocalizations.of(context)!;
     final file = File(path);
     final rows = <(String, String)>[];
-    Size? size;
+    final Size? size = pixelSizeOfFile(path);
-    try {
+    rows.add((l10n.propResolution, size == null ? '—' : '${size.width.toInt()} × ${size.height.toInt()}'));
-      final stat = file.statSync();
-      const maxHead = 512 * 1024;
-      final raf = file.openSync();
-      final header = raf.readSync(stat.size < maxHead ? stat.size : maxHead);
-      raf.closeSync();
-      size = _headerPixelSize(header);
-    } catch (_) {}
-    rows.add((l10n.propResolution, size == null ? '—' : '${size!.width.toInt()} × ${size!.height.toInt()}'));
     try {
       rows.add((l10n.propFileSize, _fmtSize(file.statSync().size)));
     } catch (_) {
@@ -247,60 +240,6 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
     return rows;
   }
 
-  /// İlk 512 KB'dan çözünürlük (piksel decode yok).
-  /// PNG/GIF/BMP/WebP: boyut ilk 33 baytta → elle parse.
-  /// JPEG: SOF büyük APP/EXIF segmentlerinin ardından gelebilir → package:image startDecode.
-  Size? _headerPixelSize(Uint8List b) {
-    try {
-      if (b.length >= 24 && b[0] == 0x89 && b[1] == 0x50) {
-        // PNG
-        final w = (b[16] << 24) | (b[17] << 16) | (b[18] << 8) | b[19];
-        final h = (b[20] << 24) | (b[21] << 16) | (b[22] << 8) | b[23];
-        return Size(w.toDouble(), h.toDouble());
-      }
-      if (b.length >= 10 && b[0] == 0x47 && b[1] == 0x49 && b[2] == 0x46) {
-        // GIF (WBMP da GIF tabanlı olabilir)
-        final w = b[6] | (b[7] << 8);
-        final h = b[8] | (b[9] << 8);
-        return Size(w.toDouble(), h.toDouble());
-      }
-      if (b.length >= 26 && b[0] == 0x42 && b[1] == 0x4D) {
-        // BMP
-        final w = b[18] | (b[19] << 8) | (b[20] << 16) | (b[21] << 24);
-        final h = b[22] | (b[23] << 8) | (b[24] << 16) | (b[25] << 24);
-        return Size(w.toDouble(), h.abs().toDouble());
-      }
-      if (b.length >= 30 && b[0] == 0x52 && b[1] == 0x49 && b[2] == 0x46 && b[3] == 0x46 &&
-          b[8] == 0x57 && b[9] == 0x45 && b[10] == 0x42 && b[11] == 0x50) {
-        // WebP
-        if (b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x58) {
-          // VP8X
-          final w = b[24] | (b[25] << 8) | (b[26] << 16);
-          final h = b[27] | (b[28] << 8) | (b[29] << 16);
-          return Size((w + 1).toDouble(), (h + 1).toDouble());
-        }
-        if (b.length >= 25 && b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x4C && b[20] == 0x2F) {
-          // VP8L
-          final w = (b[21] & 0x3F) | ((b[22] & 0x0F) << 6);
-          final h = (b[23] & 0x3F) | ((b[24] & 0x0F) << 6);
-          return Size((w + 1).toDouble(), (h + 1).toDouble());
-        }
-        if (b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x20) {
-          // VP8 (lossy)
-          final w = (b[26] | (b[27] << 8)) & 0x3FFF;
-          final h = (b[28] | (b[29] << 8)) & 0x3FFF;
-          return Size(w.toDouble(), h.toDouble());
-        }
-      }
-    } catch (_) {}
-    try {
-      // JPEG
-      final info = img.JpegDecoder().startDecode(b);
-      if (info != null) return Size(info.width.toDouble(), info.height.toDouble());
-    } catch (_) {}
-    return null;
-  }
-
   String _fmtSize(int bytes) {
     if (bytes < 1024) return '$bytes B';
     const units = ['KB', 'MB', 'GB', 'TB'];
@@ -402,6 +341,7 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
                           ? ImageCanvas(
                               key: _canvasKey,
                               filePath: ImageManager.instance.currentImagePath,
+                              zoomPercent: _zoomPercent,
                             )
                           : Center(
                               child: Column(
@@ -440,6 +380,36 @@ class _ViewerScreenState extends State<ViewerScreen> with WindowListener {
                       onTap: () => ImageManager.instance.nextImage(),
                     ),
                   ),
+                  Positioned(
+                    left: 0,
+                    right: 0,
+                    bottom: 12,
+                    child: IgnorePointer(
+                      child: Center(
+                        child: ValueListenableBuilder<double>(
+                          valueListenable: _zoomPercent,
+                          builder: (context, zoom, _) {
+                            final pct = zoom.round();
+                            return Container(
+                              padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
+                              decoration: BoxDecoration(
+                                color: Colors.black.withValues(alpha: 0.35),
+                                borderRadius: BorderRadius.circular(13),
+                              ),
+                              child: Text(
+                                pct < 1 ? '<1%' : '$pct%',
+                                style: const TextStyle(
+                                  color: Colors.white,
+                                  fontSize: 12,
+                                  fontWeight: FontWeight.w500,
+                                ),
+                              ),
+                            );
+                          },
+                        ),
+                      ),
+                    ),
+                  ),
                 ],
                 if (_isDragging)
                   Positioned.fill(

lib/services/image_header.dart

@@ -0,0 +1,80 @@
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:flutter/widgets.dart' show Size;
+import 'package:image/image.dart' as img;
+
+/// Görüntü dosyasının gerçek piksel boyutu — tam decode yapmadan.
+///
+/// PNG/GIF/BMP/WebP: boyut ilk 33 baytta → elle parse.
+/// JPEG: SOF büyük APP/EXIF segmentlerinin ardından gelebilir → package:image startDecode.
+Size? pixelSizeOfFile(String path) {
+  try {
+    final file = File(path);
+    final stat = file.statSync();
+    const maxHead = 512 * 1024;
+    final raf = file.openSync();
+    final header = raf.readSync(stat.size < maxHead ? stat.size : maxHead);
+    raf.closeSync();
+    return _headerPixelSize(header);
+  } catch (_) {}
+  return null;
+}
+
+Size? _headerPixelSize(Uint8List b) {
+  try {
+    if (b.length >= 24 && b[0] == 0x89 && b[1] == 0x50) {
+      // PNG
+      final w = (b[16] << 24) | (b[17] << 16) | (b[18] << 8) | b[19];
+      final h = (b[20] << 24) | (b[21] << 16) | (b[22] << 8) | b[23];
+      return Size(w.toDouble(), h.toDouble());
+    }
+    if (b.length >= 10 && b[0] == 0x47 && b[1] == 0x49 && b[2] == 0x46) {
+      // GIF (WBMP da GIF tabanlı olabilir)
+      final w = b[6] | (b[7] << 8);
+      final h = b[8] | (b[9] << 8);
+      return Size(w.toDouble(), h.toDouble());
+    }
+    if (b.length >= 26 && b[0] == 0x42 && b[1] == 0x4D) {
+      // BMP
+      final w = b[18] | (b[19] << 8) | (b[20] << 16) | (b[21] << 24);
+      final h = b[22] | (b[23] << 8) | (b[24] << 16) | (b[25] << 24);
+      return Size(w.toDouble(), h.abs().toDouble());
+    }
+    if (b.length >= 30 &&
+        b[0] == 0x52 &&
+        b[1] == 0x49 &&
+        b[2] == 0x46 &&
+        b[3] == 0x46 &&
+        b[8] == 0x57 &&
+        b[9] == 0x45 &&
+        b[10] == 0x42 &&
+        b[11] == 0x50) {
+      // WebP
+      if (b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x58) {
+        // VP8X
+        final w = b[24] | (b[25] << 8) | (b[26] << 16);
+        final h = b[27] | (b[28] << 8) | (b[29] << 16);
+        return Size((w + 1).toDouble(), (h + 1).toDouble());
+      }
+      if (b.length >= 25 && b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x4C && b[20] == 0x2F) {
+        // VP8L
+        final w = (b[21] & 0x3F) | ((b[22] & 0x0F) << 6);
+        final h = (b[23] & 0x3F) | ((b[24] & 0x0F) << 6);
+        return Size((w + 1).toDouble(), (h + 1).toDouble());
+      }
+      if (b[12] == 0x56 && b[13] == 0x50 && b[15] == 0x20) {
+        // VP8 (lossy)
+        final w = (b[26] | (b[27] << 8)) & 0x3FFF;
+        final h = (b[28] | (b[29] << 8)) & 0x3FFF;
+        return Size(w.toDouble(), h.toDouble());
+      }
+    }
+  } catch (_) {}
+  try {
+    // JPEG
+    final info = img.JpegDecoder().startDecode(b);
+    if (info != null) return Size(info.width.toDouble(), info.height.toDouble());
+  } catch (_) {}
+  return null;
+}

lib/widgets/image_canvas.dart

@@ -6,11 +6,15 @@ import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import '../l10n/app_localizations.dart';
 import '../services/crop_save_service.dart';
+import '../services/image_header.dart';
 import '../services/window_persistence.dart';
 
 class ImageCanvas extends StatefulWidget {
   final String filePath;
-  const ImageCanvas({super.key, required this.filePath});
+
+  /// Görüntünün gerçek piksel boyutuna göre ölçek yüzdesi (100% = 1:1).
+  final ValueNotifier<double>? zoomPercent;
+  const ImageCanvas({super.key, required this.filePath, this.zoomPercent});
   @override
   State<ImageCanvas> createState() => ImageCanvasState();
 }
@@ -47,6 +51,44 @@ class ImageCanvasState extends State<ImageCanvas> {
   Size _imageSize = Size.zero;
   static const int _downsampleTarget = 2048;
 
+  // ── Gerçek piksel boyutu + zoom yüzdesi ──
+  Size? _origSize;
+  bool _zoomSyncScheduled = false;
+
+  /// Yüzdeyi bir sonraki kare sonunda yayınla (build sırasında setState tetiklememek için).
+  void _syncZoom() {
+    if (_zoomSyncScheduled) return;
+    _zoomSyncScheduled = true;
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _zoomSyncScheduled = false;
+      if (!mounted) return;
+      final n = widget.zoomPercent;
+      if (n == null) return;
+      final v = _zoomPercentValue();
+      if (n.value != v) n.value = v;
+    });
+  }
+
+  /// Ekrandaki ölçeğin görüntünün gerçek piksel boyutuna oranı (100% = 1:1).
+  double _zoomPercentValue() {
+    final o = _origSize;
+    if (o == null || o.isEmpty || _vpSize.isEmpty) return _sc * 100;
+    final double ratio;
+    if (_isFilled) {
+      // cover: kutu viewport, boya ölçeği max oran
+      ratio = math.max(_vpSize.width / o.width, _vpSize.height / o.height);
+    } else {
+      // contain: yerleşmiş görüntü kutusu (downsample sınırı dahil) → gerçek ölçek
+      final box = _imageKey.currentContext?.findRenderObject() as RenderBox?;
+      if (box != null && box.hasSize && box.size.width > 0) {
+        ratio = box.size.width / o.width;
+      } else {
+        ratio = math.min(_vpSize.width / o.width, _vpSize.height / o.height);
+      }
+    }
+    return _sc * ratio * 100;
+  }
+
   // ── Kare hızına eşitlenmiş render tick ──
   final ValueNotifier<int> _renderTick = ValueNotifier(0);
   bool _frameScheduled = false;
@@ -128,8 +170,10 @@ class ImageCanvasState extends State<ImageCanvas> {
   @override
   void initState() {
     super.initState();
+    _origSize = pixelSizeOfFile(widget.filePath);
     HardwareKeyboard.instance.addHandler(_onHardwareKey);
     _startWarmup();
+    _syncZoom();
   }
 
   /// İlk kullanım shader derlemesini açılışa çek: gizli katmanda sırayla
@@ -189,6 +233,7 @@ class ImageCanvasState extends State<ImageCanvas> {
   void didUpdateWidget(ImageCanvas old) {
     super.didUpdateWidget(old);
     if (old.filePath != widget.filePath) {
+      _origSize = pixelSizeOfFile(widget.filePath);
       _cachedFileImage?.evict();
       _cachedProvider?.evict();
       _cachedFileImage = null;
@@ -207,6 +252,7 @@ class ImageCanvasState extends State<ImageCanvas> {
     _usingFullRes = false;
     _imageSize = Size.zero;
     _markRenderDirty();
+    _syncZoom();
   }
 
   void _toggleFillFit() {
@@ -215,6 +261,7 @@ class ImageCanvasState extends State<ImageCanvas> {
     _flipH = false;
     WindowPersistence.saveFilled(_isFilled);
     _markRenderDirty();
+    _syncZoom();
   }
 
   /// Ctrl+R: sağ çift tık gibi efektleri sıfırlar ve yatay aynalar; tekrar basınca geri alır.
@@ -250,6 +297,7 @@ class ImageCanvasState extends State<ImageCanvas> {
     _checkFullResSwap();
     _clamp();
     _markRenderDirty();
+    _syncZoom();
   }
 
   void _onPanUpdate(DragUpdateDetails d) {
@@ -502,7 +550,10 @@ class ImageCanvasState extends State<ImageCanvas> {
   Widget build(BuildContext context) {
     return LayoutBuilder(
       builder: (context, constraints) {
+        if (constraints.biggest != _vpSize) {
           _vpSize = constraints.biggest;
+          _syncZoom();
+        }
         _clamp();
         return RepaintBoundary(
           child: ValueListenableBuilder<int>(

pubspec.yaml

@@ -1,7 +1,7 @@
 name: imajviewer
 description: "Ultra-lightweight image viewer for Linux and Windows."
 publish_to: 'none'
-version: 1.7.0+16
+version: 1.7.1+17
 
 msix_config:
   display_name: ImajViewer