moved to https://github.com/ParkSeungwon/opencv-gui
LGPL v2
- Solely based on opencv (C++)
- Cross platform : can be compiled on every platform that supports opencv
- Event driven
- ASCII art style GUI compose
- fully use modern c++
- Button
- Label
- Checkbox
- radiobutton
- frame
- Text input
- combo box
- scale
- Image
- Slider
- Progress bar
- Window
- popup window
- small gui project that needs fast prototyping
- simple cross platform gui
- gui for opencv parameter tuning
#include<filesystem>
#include"zgui.h"
using namespace std;
struct Pop : z::AsciiWindow, z::PopupInterface
{
Pop() : z::PopupInterface{this}, z::AsciiWindow{R"(
WMessage---------------------------
|
| L0--------------------------
| ||
| L1--------------------------
| ||
|
| B0---------- B1----------
| |Yes| |No|
|)"}
{
B[0]->click([this]() { quit(1); });
B[1]->click([this]() { quit(0); });
}
void set(string s1, string s2) {
L[0]->text(s1); L[1]->text(s2);
update(*L[0]); update(*L[1]);
}
};
struct Win : z::AsciiWindow
{
Pop pop;
cv::Mat m;
int x, y;
cv::Scalar color;
z::Button bt{"added without ascii", {10, 410, 290, 30}};
Win() : z::AsciiWindow{R"(
WSample------------------------------------
|
| T0------------------B0- B1------- B2-----
| |Open File| || |Open| |Quit|
|
| I0-----------------------------------S1-
| || |1 100 1|
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| S0----------------------------------
| |1 100 1|
|
|
|
|
| C0 L0- C1 L1- C2 L2- C3- L3----
| |v||R| || |G| || |B| || |New|
|
|)"}
{
vector<string> v;
for(const filesystem::path &p : filesystem::directory_iterator("./"))
if(is_regular_file(p) && p.extension() == ".png" || p.extension() == ".jpg")
v.push_back(p.filename());
tie("File open", 30, *T[0], *B[0], v);//combo box
tie(*C[0], *C[1], *C[2]);//radio button
wrap("RGB", 20, 10, *C[0], *L[2]);//frame
*this + bt;
start();
B[1]->click([this]() {
*I[0] = cv::imread(T[0]->value());
*this << *I[0];
m = I[0]->mat_.clone();
});
B[2]->click([this]() { pop.set("Really?", ""); if(pop.open()) cv::destroyAllWindows(); });
S[0]->on_change([this](int val) { draw_circle(); });
S[1]->on_change([this](int val) { draw_circle(); });
C[3]->on_change([this](bool t) {
if(t) cv::imshow("new", m);
else cv::destroyWindow("new");
});
}
void draw_circle()
{
if(C[0]->checked()) color = {0,0,255};
else if(C[1]->checked()) color = {0,255,0};
else color = {255,0,0};
I[0]->mat_ = m.clone();
int x = m.cols * S[0]->value() / 100;
int y = m.rows * (100 - S[1]->value()) / 100;
cv::circle(I[0]->mat_, {x, y}, 30, color, 2);
*this << *I[0];
}
};
int main()
{
Win win;
win.loop();
}
-
Capital letter stands for
- B : Button
- C : CheckBox
- T : Text Input
- W : Window
- P : Progress bar
- S : Slider
- I : Image
- L : Label
-
Capital letter is followed by a number : this should be one digit and it is the index of this widget.
-
Capital letter is followed by '------' : this determines the length of the widget.
-
Capital letter is followed by '|' vertically : this determines the height of the widget
-
the first line below the Capital letter contains some text and close with another ''|''
- this is the text of the widget
- Exceptionally in slider widget, it is start, end, step separated by space.
- in Checkbox widget, v should be used to indicate that it is checked.
-
Window size should include all the child widgets.
- Popup window is made from Window widget by inheriting popup interface
- Combo box is made by tying Text input and Button.
- Numeric spinbutton is made by tying Text input and two buttons.
- RadioButton is made by tying many checkboxes.
- Frame is made by wrapping multiple widgets
- more than 10 widgets can be present in a window
Widget(cv::Rect_<int> r);widget will be visible with the size and position of rectangle r
bool focus();check if widget is currently focused or not. Focused widget will get the keyboard input.
void focus(bool true_or_false);set focus
Label(std::string text, cv::Rect2i r);Label will be created with text at the position r;
void text(std::string s);sets the text as s;
std::string text();gets the text of a label.
Button(std::sting t, cv::Rect_<int> r);Button with text t at position and size of r;
void click(std::function<void()> f);sets the function to be executed when the button is clicked.
void text(std::string s);sets the button text
CheckBox(cv::Rect2i r);create a checkbox with position and size of r
void click(std::function<void()> f);sets the function to be executed when the button is clicked.
void text(std::string s);sets the text of checkbox
TextInput(cv::Rect2i r);create a TextInput with position and size of r
std::string value();gets the text inside the text input
void value(std::string s);sets the text inside the text input
void enter(std::function<void(std::string)> f);sets the function to be executed when the keyboard enter is pushed.
Window(std::string title, cv::Rect_<int> r);create a window with title and position and size of r
void show();show all the child widgets in the window
Window &operate+(Widget &w);add a child widget to this window
Window &operator<<(Widget &r);update and show a Widget r in this window
int loop();start main loop. Keyboard input is processed with this function.
void close();close this window
void start(int flag = cv::WINDOW_NORMAL | cv::WINDOW_KEEPRATIO);show the window and process the mouse event.
This should be called after all the child widgets are created.
void keyboard_callback(int key);void update(const Widget &r);refresh widget r.
std::string title();get the title of the window
void resize(cv::Rect2i r);resize the window
void tie(std::string title, int font, TextInput &t, Button &b, std::vector<std::string> v, int x = -1, int y = -1);create a combo box by tying textinput t and button b.
a popup window will appear with buttons of all the string in vector v.
you can specify the place where the popup will appear with x and y.
void tie(TextInput &t, Button &b1, Button &b2, double start = 0, double step = 1);create a numeric spin button by tying a textinput and two button.
start is the number you begin with.
step will be the amount to change when you click the button.
template<class... T>
void wrap(const char *title, int font, int N, const T&... widgets);create a frame by wraping many widgets.
template<class... T> void tie(T&... checks);create a radiobutton group by combining many check boxes.
Image(cv::Rect2i r);create a Image with position and size of r
cv::Mat &operator=(const cv::Mat &r);gets the image from matrix r
Slider(cv::Rect2i r, int start, int stop, int step);create a slider widget with size and position of r.
int value();get the current value
void value(int v);set the value
void on_change(std::function<void(int)> f);sets the function to execute on slider change event
void draw();draw the slider
Progress(cv::Rect2i r);create a widget with size and position of r.
int value();get the current value
void value(int v);set the value
AsciiWindow(const char *asciiart, int unit_width = 10, int unit_height = 15, int margin = 1);create a Asciiwindow with asciiart string.
unit_width : one character of - is equivalent of this value
unit_height : one character of | is equivalent of this value
margin : default margin for the window
PopupInterface(Window *p);sets a popup interface to window p
int open(int flag = cv::WINDOW_AUTOSIZE), int x = -1, int y = -1);open a popup window with flag.
when the pop up window closes with quit(k), this function returns k.
popup appearing position can be set manually with x, y
void quit(int r);popup window will collapse and return r