branch: externals/scanner
commit a2b9ca492d2adc3b5044aad6ea58674cbd890573
Author: Raffael Stocker <[email protected]>
Commit: Raffael Stocker <[email protected]>
add unpaper customizations
---
scanner.el | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 81 insertions(+)
diff --git a/scanner.el b/scanner.el
index 9f3df3c440..d1cdb5cec9 100644
--- a/scanner.el
+++ b/scanner.el
@@ -142,6 +142,11 @@ use whatever scanimage thinks is right."
"Path and file name of the tesseract(1) program."
:type '(string))
+(defcustom scanner-unpaper-program
+ (executable-find "unpaper")
+ "Path and file name of the unpaper(1) program."
+ :type '(string))
+
(defun scanner--widget-validate-subset (error-msg widget set)
"Issue ERROR-MSG if the value of WIDGET is a not subset of SET.
ERROR-MSG is passed to ‘format’ with two string arguments: the
@@ -233,6 +238,82 @@ plugged in. For these, auto-detection will always be
done."
"Delay between document scans in multi-page mode."
:type '(number))
+
+(defcustom scanner-use-unpaper
+ nil
+ "Use unpaper(1) for post-processing of the scans before OCR."
+ :type '(boolean))
+
+(defcustom scanner-unpaper-page-layout
+ "single"
+ "Page layout to assume in post-processing."
+ :type '(choice (const "single")
+ (const "double")
+ (const "none")))
+
+(defcustom scanner-unpaper-input-pages
+ 1
+ "Input pages per sheet."
+ :type '(integer))
+
+(defcustom scanner-unpaper-output-pages
+ 1
+ "Output pages per sheet."
+ :type '(integer))
+
+(defcustom scanner-unpaper-pre-rotation
+ nil
+ "Pre-rotation to apply before post-processing."
+ :type '(choice (const :tag "clockwise" 90)
+ (const :tag "counter-clockwise" -90)
+ (const :tag "none" nil)))
+
+(defcustom scanner-unpaper-post-rotation
+ nil
+ "Post-rotation to apply after post-processing."
+ :type '(choice (const :tag "clockwise" 90)
+ (const :tag "counter-clockwise" -90)
+ (const :tag "none" nil)))
+
+(defconst scanner--unpaper-sizes
+ '("a5" "a4" "a3" "letter" "legal" "a5-landscape" "a4-landscape"
+ "a3-landscape" "letter-landscape" "legal-landscape")
+ "Paper size names understood by unpaper.")
+
+(defcustom scanner-unpaper-pre-size
+ "a4"
+ "Change sheet size before post-processing.
+Either choose one of the pre-defined options (see
+‘scanner--unpaper-sizes’), or enter a list of width and height
+values as strings; e.g. ‘(\"21cm\" \"29.7cm\")’."
+ :type `(choice (list string string)
+ ,@(mapcar (lambda (x) (list 'const x))
+ scanner--unpaper-sizes)))
+
+(defcustom scanner-unpaper-post-size
+ "a4"
+ "Change sheet size after post-processing.
+Either choose one of the pre-defined options (see
+‘scanner--unpaper-sizes’), or enter a list of width and height
+values as strings; e.g. ‘(\"21cm\" \"29.7cm\")’."
+ :type `(choice (list string string)
+ ,@(mapcar (lambda (x) (list 'const x))
+ scanner--unpaper-sizes)))
+
+(defcustom scanner-unpaper-border
+ '(0 0 0 0)
+ "Define a border at the sheet edges to be set to white.
+The border is specified as a list of four integers (widths in
+pixels) for left, top, right, and bottom edge, respectively.
+This border is applied after deskewing and before automatic
+border-scan."
+ :type '(list integer integer integer integer))
+
+(defcustom scanner-unpaper-switches
+ '()
+ "Additional options to be passed to unpaper(1)."
+ :type '(repeat string))
+
;;;; menu
;;;###autoload
