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Change class label with mouse wheel #127

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Change class label with mouse wheel #127

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31 changes: 31 additions & 0 deletions main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@ std::atomic<bool> right_button_click;
std::atomic<int> move_rect_id;
std::atomic<bool> move_rect;
std::atomic<bool> clear_marks;
std::atomic<bool> wheel_increase_label_class;
std::atomic<bool> wheel_decrease_label_class;
std::atomic<bool> copy_previous_marks(false);

std::atomic<bool> show_help;
Expand Down Expand Up @@ -110,6 +112,19 @@ void callback_mouse_click(int event, int x, int y, int flags, void* user_data)
x_end = max(x, 0);
y_end = max(y, 0);
}
else if (event == cv::EVENT_MOUSEWHEEL) //catch mouse wheel movement
{
if (getMouseWheelDelta(flags)>0)
{
wheel_increase_label_class = false;
wheel_decrease_label_class = true;
}
else
{
wheel_increase_label_class = true;
wheel_decrease_label_class = false;
}
}
}

class comma : public std::numpunct<char> {
Expand Down Expand Up @@ -774,6 +789,19 @@ int main(int argc, char *argv[])
#else
int pressed_key = cv::waitKey(20); // OpenCV 2.x
#endif
// handle mouse wheel event
if (wheel_increase_label_class)
{
wheel_increase_label_class = false;
current_obj_id += 1;
current_obj_id = min(max_object_id, current_obj_id);
}
if (wheel_decrease_label_class)
{
wheel_decrease_label_class = false;
current_obj_id -= 1;
current_obj_id = max(0, current_obj_id);
}

if (pressed_key >= 0)
for (int i = 0; i < 5; ++i) cv::waitKey(1);
Expand Down Expand Up @@ -808,11 +836,14 @@ int main(int argc, char *argv[])
++trackbar_value;
break;

case 'a':
case 2424832: // <-
case 65361: // <-
case 91: // [
--trackbar_value;
break;

case 's':
case 2555904: // ->
case 65363: // ->
case 93: // ]
Expand Down