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* Add 'headless' to global state. Don't call window creation functions in headless mode * Add 'headless' example Co-authored-by: Fernando Bevilacqua <dovyski@gmail.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| find_package( OpenCV REQUIRED ) | ||
| include_directories( ${OpenCV_INCLUDE_DIRS} ) | ||
| include_directories(../../..) | ||
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| set(ApplicationName headless) | ||
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| add_executable(${ApplicationName} main.cpp) | ||
| target_link_libraries( ${ApplicationName} ${OpenCV_LIBS} ) | ||
| set_property(TARGET ${ApplicationName} PROPERTY CXX_STANDARD 11) | ||
| install(TARGETS ${ApplicationName} DESTINATION bin) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| This is application shows the mouse API of cvui. It shows a rectangle on the | ||
| screen everytime the user clicks and drags the mouse cursor around. | ||
| Copyright (c) 2017 Fernando Bevilacqua <dovyski@gmail.com> | ||
| Licensed under the MIT license. | ||
| */ | ||
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| #include <iostream> | ||
| #include <opencv2/core/core.hpp> | ||
| #include <opencv2/highgui/highgui.hpp> | ||
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| #define CVUI_IMPLEMENTATION | ||
| #include "cvui.h" | ||
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| #define WINDOW_NAME "Headless" | ||
| #define ENABLE_HEADLESS true | ||
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| int main(int argc, const char *argv[]) | ||
| { | ||
| cv::Mat frame = cv::Mat(300, 600, CV_8UC3); | ||
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| // Init cvui and tell it to create a (virtual) window. | ||
| // The last flag 'headless' is 'true', so no actual GUI windows will be created. | ||
| std::cout << "Rendering cvui GUI in headless mode." << std::endl; | ||
| cvui::init(WINDOW_NAME, 1, true, ENABLE_HEADLESS); | ||
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| bool state = false; | ||
| while (true) { | ||
| // Rectangle to be rendered according to mouse interactions. | ||
| cv::Rect rectangle(0, 0, 0, 0); | ||
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| // Fill the frame with a nice color | ||
| frame = cv::Scalar(49, 52, 49); | ||
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| // Show the coordinates of the mouse pointer on the screen | ||
| cvui::text(frame, 10, 30, "Hello, World!"); | ||
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| // Create a checkbox that will never be clicked. This is still OK in headless mode. | ||
| cvui::checkbox(frame, 10, 50, "A checkbox that will never be clicked in headless mode", &state); | ||
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| // Update and show everything on the screen | ||
| // This is still OK in headless mode. | ||
| cvui::imshow(WINDOW_NAME, frame); | ||
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| // This is still OK in headless mode. | ||
| if (ENABLE_HEADLESS || cv::waitKey(20) == 27) { | ||
| break; | ||
| } | ||
| } | ||
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| cv::imwrite("headless_frame.png", frame); | ||
| std::cout << "Wrote headless_frame.png" << std::endl; | ||
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| return 0; | ||
| } |