Try to fix "enum struct" wrapping for Java

modules/features2d/misc/java/test/Features2dTest.java

@@ -7,11 +7,13 @@ import java.util.List;
 import org.opencv.calib3d.Calib3d;
 import org.opencv.core.CvType;
 import org.opencv.core.Mat;
+import org.opencv.core.MatOfInt;
 import org.opencv.core.MatOfDMatch;
 import org.opencv.core.MatOfKeyPoint;
 import org.opencv.core.MatOfPoint2f;
 import org.opencv.core.Point;
 import org.opencv.core.Range;
+import org.opencv.core.Scalar;
 import org.opencv.core.DMatch;
 import org.opencv.features2d.DescriptorMatcher;
 import org.opencv.features2d.Features2d;
@@ -141,4 +143,30 @@ public class Features2dTest extends OpenCVTestCase {
         Imgcodecs.imwrite(outputPath, outimg);
         // OpenCVTestRunner.Log("Output image is saved to: " + outputPath);
     }
+
+    public void testDrawKeypoints()
+    {
+        Mat outImg = Mat.ones(11, 11, CvType.CV_8U);
+
+        MatOfKeyPoint kps = new MatOfKeyPoint(new KeyPoint(5, 5, 1));  // x, y, size
+        Features2d.drawKeypoints(new Mat(), kps, outImg, new Scalar(255),
+                                 Features2d.DrawMatchesFlags_DRAW_OVER_OUTIMG);
+
+        Mat ref = new MatOfInt(new int[] {
+            1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
+            1,   1,   1,   1,  15,  54,  15,   1,   1,   1,   1,
+            1,   1,   1,  76, 217, 217, 221,  81,   1,   1,   1,
+            1,   1, 100, 224, 111,  57, 115, 225, 101,   1,   1,
+            1,  44, 215, 100,   1,   1,   1, 101, 214,  44,   1,
+            1,  54, 212,  57,   1,   1,   1,  55, 212,  55,   1,
+            1,  40, 215, 104,   1,   1,   1, 105, 215,  40,   1,
+            1,   1, 102, 221, 111,  55, 115, 222, 103,   1,   1,
+            1,   1,   1,  76, 218, 217, 220,  81,   1,   1,   1,
+            1,   1,   1,   1,  15,  55,  15,   1,   1,   1,   1,
+            1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1
+        }).reshape(1, 11);
+        ref.convertTo(ref, CvType.CV_8U);
+
+        assertMatEqual(ref, outImg);
+    }
 }

modules/java/generator/gen_java.py

@@ -427,9 +427,12 @@ class JavaWrapperGenerator(object):
         constinfo = ConstInfo(decl, namespaces=self.namespaces, enumType=enumType)
         if constinfo.isIgnored():
             logging.info('ignored: %s', constinfo)
-        elif not self.isWrapped(constinfo.classname):
-            logging.info('class not found: %s', constinfo)
         else:
+            if not self.isWrapped(constinfo.classname):
+                logging.info('class not found: %s', constinfo)
+                constinfo.name = constinfo.classname + '_' + constinfo.name
+                constinfo.classname = ''
+
             ci = self.getClass(constinfo.classname)
             duplicate = ci.getConst(constinfo.name)
             if duplicate:

modules/python/src2/hdr_parser.py

@@ -634,6 +634,8 @@ class CppHeaderParser(object):
             block_type, block_name = b[self.BLOCK_TYPE], b[self.BLOCK_NAME]
             if block_type in ["file", "enum"]:
                 continue
+            if block_type in ["enum struct", "enum class"] and block_name == name:
+                continue
             if block_type not in ["struct", "class", "namespace", "enum struct", "enum class"]:
                 print("Error at %d: there are non-valid entries in the current block stack %s" % (self.lineno, self.block_stack))
                 sys.exit(-1)

samples/java/tutorial_code/features2D/feature_flann_matcher/SURFFLANNMatchingDemo.java

@@ -58,7 +58,7 @@ class SURFFLANNMatching {
         //-- Draw matches
         Mat imgMatches = new Mat();
         Features2d.drawMatches(img1, keypoints1, img2, keypoints2, goodMatches, imgMatches, Scalar.all(-1),
-                Scalar.all(-1), new MatOfByte(), Features2d.NOT_DRAW_SINGLE_POINTS);
+                Scalar.all(-1), new MatOfByte(), Features2d.DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS);
 
         //-- Show detected matches
         HighGui.imshow("Good Matches", imgMatches);

samples/java/tutorial_code/features2D/feature_homography/SURFFLANNMatchingHomographyDemo.java

@@ -64,7 +64,7 @@ class SURFFLANNMatchingHomography {
         //-- Draw matches
         Mat imgMatches = new Mat();
         Features2d.drawMatches(imgObject, keypointsObject, imgScene, keypointsScene, goodMatches, imgMatches, Scalar.all(-1),
-                Scalar.all(-1), new MatOfByte(), Features2d.NOT_DRAW_SINGLE_POINTS);
+                Scalar.all(-1), new MatOfByte(), Features2d.DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS);
 
         //-- Localize the object
         List<Point> obj = new ArrayList<>();