239 lines
7.3 KiB
C++
239 lines
7.3 KiB
C++
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/Graphics.hpp>
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#include <algorithm>
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#include <sstream>
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#include <iomanip>
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#include <string>
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#include <map>
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namespace
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{
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struct JoystickObject
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{
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sf::Text label;
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sf::Text value;
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};
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typedef std::map<std::string, JoystickObject> Texts;
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Texts texts;
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std::ostringstream sstr;
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float threshold = 0.1f;
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// Axes labels in as C strings
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const char* axislabels[] = {"X", "Y", "Z", "R", "U", "V", "PovX", "PovY"};
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// Helper to set text entries to a specified value
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template<typename T>
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void set(const char* label, const T& value)
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{
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sstr.str("");
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sstr << value;
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texts[label].value.setString(sstr.str());
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}
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// Update joystick identification
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void updateIdentification(unsigned int index)
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{
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sstr.str("");
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sstr << "Joystick " << index << ":";
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texts["ID"].label.setString(sstr.str());
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texts["ID"].value.setString(sf::Joystick::getIdentification(index).name);
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}
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// Update joystick axes
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void updateAxes(unsigned int index)
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{
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for (unsigned int j = 0; j < sf::Joystick::AxisCount; ++j)
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{
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if (sf::Joystick::hasAxis(index, static_cast<sf::Joystick::Axis>(j)))
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set(axislabels[j], sf::Joystick::getAxisPosition(index, static_cast<sf::Joystick::Axis>(j)));
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}
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}
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// Update joystick buttons
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void updateButtons(unsigned int index)
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{
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for (unsigned int j = 0; j < sf::Joystick::getButtonCount(index); ++j)
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{
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sstr.str("");
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sstr << "Button " << j;
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set(sstr.str().c_str(), sf::Joystick::isButtonPressed(index, j));
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}
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}
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// Helper to update displayed joystick values
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void updateValues(unsigned int index)
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{
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if (sf::Joystick::isConnected(index)) {
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// Update the label-value sf::Text objects based on the current joystick state
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updateIdentification(index);
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updateAxes(index);
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updateButtons(index);
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}
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}
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}
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////////////////////////////////////////////////////////////
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/// Entry point of application
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///
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/// \return Application exit code
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///
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////////////////////////////////////////////////////////////
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int main()
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{
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// Create the window of the application
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sf::RenderWindow window(sf::VideoMode(400, 680), "Joystick", sf::Style::Close);
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window.setVerticalSyncEnabled(true);
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// Load the text font
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sf::Font font;
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if (!font.loadFromFile("resources/sansation.ttf"))
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return EXIT_FAILURE;
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// Set up our string conversion parameters
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sstr.precision(2);
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sstr.setf(std::ios::fixed | std::ios::boolalpha);
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// Set up our joystick identification sf::Text objects
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texts["ID"].label.setPosition(5.f, 5.f);
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texts["ID"].value.setPosition(80.f, 5.f);
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texts["ID"].label.setString("<Not Connected>");
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texts["ID"].value.setString("");
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// Set up our threshold sf::Text objects
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sstr.str("");
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sstr << threshold << " (Change with up/down arrow keys)";
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texts["Threshold"].label.setPosition(5.f, 5.f + 2 * font.getLineSpacing(14));
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texts["Threshold"].value.setPosition(80.f, 5.f + 2 * font.getLineSpacing(14));
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texts["Threshold"].label.setString("Threshold:");
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texts["Threshold"].value.setString(sstr.str());
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// Set up our label-value sf::Text objects
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for (unsigned int i = 0; i < sf::Joystick::AxisCount; ++i)
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{
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JoystickObject& object = texts[axislabels[i]];
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object.label.setPosition(5.f, 5.f + ((i + 4) * font.getLineSpacing(14)));
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object.label.setString(std::string(axislabels[i]) + ":");
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object.value.setPosition(80.f, 5.f + ((i + 4) * font.getLineSpacing(14)));
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object.value.setString("N/A");
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}
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for (unsigned int i = 0; i < sf::Joystick::ButtonCount; ++i)
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{
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sstr.str("");
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sstr << "Button " << i;
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JoystickObject& object = texts[sstr.str()];
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object.label.setPosition(5.f, 5.f + ((sf::Joystick::AxisCount + i + 4) * font.getLineSpacing(14)));
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object.label.setString(sstr.str() + ":");
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object.value.setPosition(80.f, 5.f + ((sf::Joystick::AxisCount + i + 4) * font.getLineSpacing(14)));
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object.value.setString("N/A");
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}
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for (Texts::iterator it = texts.begin(); it != texts.end(); ++it)
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{
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it->second.label.setFont(font);
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it->second.label.setCharacterSize(14);
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it->second.label.setFillColor(sf::Color::White);
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it->second.value.setFont(font);
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it->second.value.setCharacterSize(14);
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it->second.value.setFillColor(sf::Color::White);
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}
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// Update initially displayed joystick values if a joystick is already connected on startup
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for (unsigned int i = 0; i < sf::Joystick::Count; ++i)
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{
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if (sf::Joystick::isConnected(i))
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{
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updateValues(i);
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break;
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}
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}
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while (window.isOpen())
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{
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// Handle events
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sf::Event event;
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while (window.pollEvent(event))
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{
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// Window closed or escape key pressed: exit
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if ((event.type == sf::Event::Closed) ||
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((event.type == sf::Event::KeyPressed) && (event.key.code == sf::Keyboard::Escape)))
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{
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window.close();
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break;
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}
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else if ((event.type == sf::Event::JoystickButtonPressed) ||
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(event.type == sf::Event::JoystickButtonReleased) ||
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(event.type == sf::Event::JoystickMoved) ||
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(event.type == sf::Event::JoystickConnected))
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{
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// Update displayed joystick values
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updateValues(event.joystickConnect.joystickId);
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}
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else if (event.type == sf::Event::JoystickDisconnected)
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{
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// Reset displayed joystick values to empty
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for (Texts::iterator it = texts.begin(); it != texts.end(); ++it)
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it->second.value.setString("N/A");
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texts["ID"].label.setString("<Not Connected>");
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texts["ID"].value.setString("");
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sstr.str("");
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sstr << threshold << " (Change with up/down arrow keys)";
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texts["Threshold"].value.setString(sstr.str());
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}
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}
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// Update threshold if the user wants to change it
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float newThreshold = threshold;
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if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up))
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newThreshold += 0.1f;
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if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down))
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newThreshold -= 0.1f;
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newThreshold = std::min(std::max(newThreshold, 0.1f), 100.0f);
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if (newThreshold != threshold)
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{
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threshold = newThreshold;
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window.setJoystickThreshold(threshold);
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sstr.str("");
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sstr << threshold << " (Change with up/down arrow keys)";
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texts["Threshold"].value.setString(sstr.str());
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}
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// Clear the window
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window.clear();
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// Draw the label-value sf::Text objects
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for (Texts::const_iterator it = texts.begin(); it != texts.end(); ++it)
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{
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window.draw(it->second.label);
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window.draw(it->second.value);
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}
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// Display things on screen
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window.display();
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}
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}
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