Add ContrastMode to contrast command

brendan-duncan · May 22, 2024 · 3a7d3fa · 3a7d3fa
1 parent 7fa05e9
commit 3a7d3fa
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Showing 3 changed files with 9 additions and 3 deletions.
diff --git a/doc/filters.md b/doc/filters.md
@@ -90,7 +90,8 @@ Image colorOffset(Image src, { num red = 0, num green = 0, num blue = 0, num alp
 ### [contrast](https://pub.dev/documentation/image/latest/image/contrast.html)
 
 ```dart
-Image contrast(Image src, { required num contrast, Image? mask, Channel maskChannel = Channel.luminance })
+Image contrast(Image src, { required num contrast, Image? mask, Channel maskChannel = Channel.luminance,
+    ContrastMode mode = ContrastMode.proprtional})
 ```
 
 ![contrast](images/filter/contrast.png)

diff --git a/lib/src/command/filter/contrast_cmd.dart b/lib/src/command/filter/contrast_cmd.dart
@@ -6,9 +6,13 @@ class ContrastCmd extends Command {
   final num _contrast;
   Command? mask;
   Channel maskChannel;
+  g.ContrastMode mode;
 
   ContrastCmd(Command? input,
-      {num contrast = 100.0, this.mask, this.maskChannel = Channel.luminance})
+      {num contrast = 100.0,
+      this.mask,
+      this.maskChannel = Channel.luminance,
+      this.mode = g.ContrastMode.proportional})
       : _contrast = contrast,
         super(input);
 

diff --git a/lib/src/filter/contrast.dart b/lib/src/filter/contrast.dart
@@ -42,7 +42,8 @@ Image contrast(Image src,
     } else {
       if (contrast != _lastContrast) {
         _lastContrast = contrast;
-/// 0.12 is an arbitrary adjustment to use 100 as mid point
+
+        /// 0.12 is an arbitrary adjustment to use 100 as mid point
         contrast = (contrast / 100.0) - 0.12;
         _contrast = Uint8List(256);
         for (var i = 0; i < 256; ++i) {