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Update example to move setting window in frame. #36

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May 24, 2018
Merged

Update example to move setting window in frame. #36

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76 changes: 61 additions & 15 deletions example/src/canny/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,61 @@ Code licensed under the MIT license, check LICENSE file.

#define WINDOW_NAME "CVUI Canny Edge"


class Setting {
int _x_setting ;
int _y_setting ;
int _y_delta ;
int _x_delta ;
bool _is_move ;
int _width ;
int _height ;
cv::String _name;
public :
Setting(int x,int y,int width,int height,const char * name = "Setting") {
_x_setting = x;
_y_setting = y;
_y_delta = 0;
_x_delta = 0;
_is_move = false;
_width = width;
_height = height;
_name = name;
}

void begin(cv::Mat &frame) {
if (_is_move == false && cvui::mouse(cvui::DOWN) && cvui::mouse().inside(cv::Rect2i(_x_setting, _y_setting, _width, 20))) {
_x_delta = cvui::mouse().x - _x_setting;
_y_delta = cvui::mouse().y - _y_setting;
_is_move = true;
} else if (_is_move && cvui::mouse(cvui::IS_DOWN)) {
_x_setting = cvui::mouse().x - _x_delta;
_y_setting = cvui::mouse().y - _y_delta;
} else { //if (cvui::mouse(cvui::UP)) {
_is_move = false;
_x_setting = MAX(0, _x_setting);
_y_setting = MAX(0, _y_setting);
_x_setting = MIN(frame.cols-_width , _x_setting);
_y_setting = MIN(frame.rows-20 , _y_setting);
}
cvui::window(frame, _x_setting, _y_setting, _width, _height, _name.c_str());
cvui::beginRow(frame, _x_setting + 10, _y_setting + 40, _width -20, _height-20);
cvui::beginColumn(_width-10, _height-20);
}

void end() {
cvui::endColumn();
cvui::endRow();
}

int width() const {
return _width;
}
int height() const {
return _height;
}
};

int main(int argc, const char *argv[])
{
cv::Mat lena = cv::imread("lena.jpg");
Expand All @@ -20,7 +75,7 @@ int main(int argc, const char *argv[])

// Init cvui and tell it to create a OpenCV window, i.e. cv::namedWindow(WINDOW_NAME).
cvui::init(WINDOW_NAME);

Setting setting1(10,50,200,150,"Setting1");
while (true) {
// Should we apply Canny edge?
if (use_canny) {
Expand All @@ -32,23 +87,14 @@ int main(int argc, const char *argv[])
lena.copyTo(frame);
}

// Render the settings window to house the checkbox
// and the trackbars below.
cvui::window(frame, 10, 50, 180, 180, "Settings");

// Checkbox to enable/disable the use of Canny edge
cvui::checkbox(frame, 15, 80, "Use Canny Edge", &use_canny);

// Two trackbars to control the low and high threshold values
// for the Canny edge algorithm.
cvui::trackbar(frame, 15, 110, 165, &low_threshold, 5, 150);
cvui::trackbar(frame, 15, 180, 165, &high_threshold, 80, 300);
setting1.begin(frame);
cvui::checkbox("Use Canny Edge", &use_canny);
cvui::trackbar(setting1.width()-20, &low_threshold, 5, 150);
cvui::trackbar(setting1.width()-20, &high_threshold, 80, 300);
setting1.end();

// This function must be called *AFTER* all UI components. It does
// all the behind the scenes magic to handle mouse clicks, etc.
cvui::update();

// Show everything on the screen
cv::imshow(WINDOW_NAME, frame);

// Check if ESC was pressed
Expand Down