highgui: wayland: Exception when showing too small width image

[Kumataro]

System Information

OpenCV version: 4.x ( ba65d2eb0d83e6c9567a2534f8994cd4484a1635 ) Operating System / Platform: Ubuntu 24.04 Compiler & compiler version: GCC 13.2

Detailed description

When imshow() with small width image, exception is happen. Because window view width is too small enogh to show title bar. (In this case, roi is used to fill area. but it has negative position).

kmtr@kmtr-VMware-Virtual-Platform:~/work/build4-main$ ./bin/opencv_test_highgui --gtest_filter="*small*"
:
: 
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from Highgui_GUI
[ RUN      ] Highgui_GUI.small_width_image
[ INFO:0@0.007] global registry.impl.hpp:114 UIBackendRegistry UI: Enabled backends(3, sorted by priority): GTK(1000); GTK3(990); GTK2(980) + BUILTIN(Wayland)
[*] DEBUG: handle_toplevel_configure: maximized=0 fullscreen=0 resizing=0 focused=0 size=[0 x 0]
Exception message: OpenCV(4.9.0-dev) /home/kmtr/work/opencv4/modules/core/src/matrix.cpp:808: error: (-215:Assertion failed) 0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows in function 'Mat'

/home/kmtr/work/opencv4/modules/highgui/test/test_gui.cpp:221: Failure
Expected: waitKey(1000) doesn't throw an exception.
  Actual: it throws.
[  FAILED  ] Highgui_GUI.small_width_image (59 ms)
[----------] 1 test from Highgui_GUI (59 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (59 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] Highgui_GUI.small_width_image

Steps to reproduce

diff --git a/modules/highgui/test/test_gui.cpp b/modules/highgui/test/test_gui.cpp
index 8991e8072b..7821346a99 100644
--- a/modules/highgui/test/test_gui.cpp
+++ b/modules/highgui/test/test_gui.cpp
@@ -205,6 +205,22 @@ TEST(Highgui_GUI, trackbar)
     EXPECT_NO_THROW(destroyAllWindows());
 }

+// See XXXX
+#if (!defined(ENABLE_PLUGINS) \
+      && !defined HAVE_WAYLAND )
+TEST(Highgui_GUI, DISABLED_small_width_image)
+#else
+TEST(Highgui_GUI, small_width_image)
+#endif
+{
+    const std::string window_name("trackbar_test_window");
+    cv::Mat src(1,1,CV_8UC3,cv::Scalar(0));
+    EXPECT_NO_THROW(destroyAllWindows());
+    ASSERT_NO_THROW(namedWindow(window_name));
+    ASSERT_NO_THROW(imshow(window_name, src));
+    ASSERT_NO_THROW(waitKey(1000));
+    EXPECT_NO_THROW(destroyAllWindows());
+}

Issue submission checklist

• [X] I report the issue, it's not a question
• [X] I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• [X] I updated to the latest OpenCV version and the issue is still there
• [X] There is reproducer code and related data files (videos, images, onnx, etc)