From cb104acee998faec64ef9710a9dbd0a11bea8f37 Mon Sep 17 00:00:00 2001
From: Justin Israel <justinisrael@gmail.com>
Date: Sat, 9 Sep 2023 16:31:00 +1200
Subject: [PATCH] Add MagickAutoThresholdImage; bump min im7 to 7.0.8-41 (refs
 #295)

---
 Dockerfile                   |  2 +-
 README.md                    |  6 +++---
 imagick/magick_wand_image.go | 11 +++++++++++
 imagick/threshold_type.go    | 19 +++++++++++++++++++
 4 files changed, 34 insertions(+), 4 deletions(-)
 create mode 100644 imagick/threshold_type.go

diff --git a/Dockerfile b/Dockerfile
index 152df24..ce866df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/*
 
 ARG IMAGEMAGICK_PROJECT=ImageMagick
-ARG IMAGEMAGICK_VERSION=7.0.8-11
+ARG IMAGEMAGICK_VERSION=7.0.8-41
 ENV IMAGEMAGICK_VERSION=$IMAGEMAGICK_VERSION
 
 RUN cd && \
diff --git a/README.md b/README.md
index 0776505..faf14ed 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,9 @@ Go Imagick is a Go bind to ImageMagick's MagickWand C API.
 We support two compatibility branches:
 
 ```
-im-7   (tag v3.x.x): 7.x     <= ImageMagick <= 7.x
-master (tag v2.x.x): 6.9.1-7 <= ImageMagick <= 6.9.9-35
-legacy (tag v1.x.x): 6.7.x   <= ImageMagick <= 6.8.9-10
+im-7   (tag v3.x.x): 7.0.8-41 <= ImageMagick <= 7.x
+master (tag v2.x.x): 6.9.1-7  <= ImageMagick <= 6.9.9-35
+legacy (tag v1.x.x): 6.7.x    <= ImageMagick <= 6.8.9-10
 ```
 
 They map, respectively, through gopkg.in:
diff --git a/imagick/magick_wand_image.go b/imagick/magick_wand_image.go
index 2396287..0a53a2c 100644
--- a/imagick/magick_wand_image.go
+++ b/imagick/magick_wand_image.go
@@ -2413,6 +2413,17 @@ func (mw *MagickWand) AutoOrientImage() error {
 	return mw.getLastErrorIfFailed(ok)
 }
 
+// AutoThresholdImage automatically performs image thresholding
+// dependent on which method you specify.
+//
+// A description of each parameter follows:
+//
+//	method: choose from Kapur, OTSU, or Triangle.
+func (mw *MagickWand) AutoThresholdImage(method AutoThresholdMethodType) error {
+	ok := C.MagickAutoThresholdImage(mw.mw, C.AutoThresholdMethod(method))
+	return mw.getLastErrorIfFailed(ok)
+}
+
 // Sets the page geometry of the image.
 func (mw *MagickWand) SetImagePage(width, height uint, x, y int) error {
 	ok := C.MagickSetImagePage(mw.mw, C.size_t(width), C.size_t(height), C.ssize_t(x), C.ssize_t(y))
diff --git a/imagick/threshold_type.go b/imagick/threshold_type.go
new file mode 100644
index 0000000..043979e
--- /dev/null
+++ b/imagick/threshold_type.go
@@ -0,0 +1,19 @@
+// Copyright 2013 Herbert G. Fischer. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package imagick
+
+/*
+#include <MagickWand/MagickWand.h>
+*/
+import "C"
+
+type AutoThresholdMethodType int
+
+const (
+	AUTO_THRESHOLD_METHOD_UNDEFINED AutoThresholdMethodType = C.UndefinedThresholdMethod
+	AUTO_THRESHOLD_METHOD_KAPUR     AutoThresholdMethodType = C.KapurThresholdMethod
+	AUTO_THRESHOLD_METHOD_OTSU      AutoThresholdMethodType = C.OTSUThresholdMethod
+	AUTO_THRESHOLD_METHOD_TRIANGLE  AutoThresholdMethodType = C.TriangleThresholdMethod
+)