copyedit, use repeated calls for graduated contrast

diff --git a/src/extension/internal/bitmap/contrast.cpp b/src/extension/internal/bitmap/contrast.cpp
index b024c851587cca087d2a6851e1555c9487b23e9f..eb69f2eb9df63553a4875125d8c24590b0531d8d 100644 (file)
--- a/src/extension/internal/bitmap/contrast.cpp
+++ b/src/extension/internal/bitmap/contrast.cpp
@@ -18,7 +18,10 @@ namespace Bitmap {
        
 void
 Contrast::applyEffect(Magick::Image *image) {
-       image->contrast(_sharpen);
+       // the contrast method's argument seems to be binary, so we perform it multiple times
+       // to get the desired level of effect
+       for (unsigned int i = 0; i < _sharpen; i ++)
+       image->contrast(1);
 }
 
 void
@@ -35,13 +38,13 @@ Contrast::init(void)
                "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
                        "<name>" N_("Contrast") "</name>\n"
                        "<id>org.inkscape.effect.bitmap.contrast</id>\n"
-                       "<param name=\"sharpen\" gui-text=\"" N_("Sharpen") "\" type=\"int\" min=\"0\" max=\"100\">1</param>\n"
+                       "<param name=\"sharpen\" gui-text=\"" N_("Adjust") "\" type=\"int\" min=\"0\" max=\"10\">0</param>\n"
                        "<effect>\n"
                                "<object-type>all</object-type>\n"
                                "<effects-menu>\n"
                                        "<submenu name=\"" N_("Raster") "\" />\n"
                                "</effects-menu>\n"
-                               "<menu-tip>" N_("Enhance intensity differences in selected bitmap(s).") "</menu-tip>\n"
+                               "<menu-tip>" N_("Increase or decrease contrast in bitmap(s)") "</menu-tip>\n"
                        "</effect>\n"
                "</inkscape-extension>\n", new Contrast());
 }