implement brighten by 20% in viewer

NEWS

@@ -1,3 +1,6 @@
+version 0.9.8 (SH Nov 23 2024)
+- Implement brighten by 20%  in viewer
+
 version 0.9.7 (SH Feb 10 2024)
 - Implement rotate right, left in viewer
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "simimg"
-version = "0.9.7"
+version = "0.9.8"
 description = "Similar Image Finder"
 authors = [
     { name = "sacha", email = "[email protected]" },

simimg/dialogs/viewer.py

@@ -5,6 +5,7 @@
 from tkinter import messagebox as tkmessagebox
 from PIL.Image import ROTATE_270, ROTATE_90
 from PIL.ImageOps import autocontrast, equalize, grayscale, mirror
+from PIL.ImageEnhance import Brightness
 
 import simimg.utils.pillowplus as PP
 
@@ -14,6 +15,8 @@ def _rotate_left(im):
 def _rotate_right(im):
     return im.transpose(ROTATE_90)
 
+def _brighten(im):
+    return Brightness(im).enhance(1.2)
 
 class Viewer(tk.Toplevel):
     "A viewer window to display the selected pictures"
@@ -39,6 +42,7 @@ def __init__(self, Fileinfo=None, Controller=None):
             "flip": mirror,
             "rotate_left": _rotate_left,
             "rotate_right": _rotate_right,
+            "brighten": _brighten,
         }
         self._default_imageops = {k: "d" for k in self._func_map}
         self._wantedImageOps = copy(self._default_imageops)
@@ -70,6 +74,7 @@ def __init__(self, Fileinfo=None, Controller=None):
             "g": partial(self._toggleImageOp, opp="grayscale"),
             "r": partial(self._toggleImageOp, opp="rotate_left"),
             "l": partial(self._toggleImageOp, opp="rotate_right"),
+            "b": partial(self._toggleImageOp, opp="brighten"),
             "F1": self._showHelp,
             "q": self._exitViewer,
             "Escape": self._exitViewer
@@ -306,6 +311,7 @@ def _showHelp(self):
 g: toggle converting the image to grayscale
 l: toggle rotating the image to the left (anti-clockwise)
 r: toggle rotating the image to the right (clockwise)
+b: toggle brightening the image by 20%
 m: move the file to the folder set in the main window
 <n>: move the file to the folder #n move panel of the main window
 q, Escape: quit the viewer