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https://github.com/glfw/glfw.git
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d2952e4e92
@ -184,6 +184,7 @@ information on what to include when reporting a bug.
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- [X11] Bugfix: IM-duplicated key events would leak at low polling rates (#747)
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- [X11] Bugfix: Gamma ramp setting via RandR did not validate ramp size
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- [X11] Bugfix: Key name string encoding depended on current locale (#981,#983)
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- [Linux] Moved to evdev for joystick input (#906,#1005)
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- [Linux] Bugfix: Event processing did not detect joystick disconnection (#932)
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- [Linux] Bugfix: The joystick device path could be truncated (#1025)
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- [Cocoa] Added support for Vulkan window surface creation via
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@ -314,6 +315,7 @@ skills.
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- Peoro
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- Braden Pellett
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- Arturo J. Pérez
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- Anthony Pesch
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- Orson Peters
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- Emmanuel Gil Peyrot
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- Cyril Pichard
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@ -4234,8 +4234,6 @@ GLFWAPI const unsigned char* glfwGetJoystickButtons(int jid, int* count);
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
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* GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
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*
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* @bug @linux Joystick hats are currently unimplemented.
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*
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* @pointer_lifetime The returned array is allocated and freed by GLFW. You
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* should not free it yourself. It is valid until the specified joystick is
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* disconnected, this function is called again for that joystick or the library
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@ -38,36 +38,37 @@
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#include <string.h>
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#include <unistd.h>
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#define TEST_BIT(bit, arr) (arr[(bit) / 8] & (1 << ((bit) % 8)))
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// Apply an EV_KEY event to the specified joystick
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//
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static void handleKeyEvent(_GLFWjoystick* js, int code, int value)
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{
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int jid = js - _glfw.joysticks;
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int button = js->linjs.keyMap[code];
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_glfwInputJoystickButton(jid, button, value ? 1 : 0);
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_glfwInputJoystickButton(_GLFW_JOYSTICK_ID(js),
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js->linjs.keyMap[code - BTN_MISC],
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value ? GLFW_PRESS : GLFW_RELEASE);
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}
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// Apply an EV_ABS event to the specified joystick
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//
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static void handleAbsEvent(_GLFWjoystick* js, int code, int value)
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{
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int jid = js - _glfw.joysticks;
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int index = js->linjs.absMap[code];
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const int jid = _GLFW_JOYSTICK_ID(js);
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const int index = js->linjs.absMap[code];
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if (code >= ABS_HAT0X && code <= ABS_HAT3Y)
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{
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static const char stateMap[3][3] =
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{
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{GLFW_HAT_CENTERED, GLFW_HAT_UP, GLFW_HAT_DOWN},
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{GLFW_HAT_LEFT, GLFW_HAT_LEFT_UP, GLFW_HAT_LEFT_DOWN},
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{GLFW_HAT_RIGHT, GLFW_HAT_RIGHT_UP, GLFW_HAT_RIGHT_DOWN},
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{ GLFW_HAT_CENTERED, GLFW_HAT_UP, GLFW_HAT_DOWN },
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{ GLFW_HAT_LEFT, GLFW_HAT_LEFT_UP, GLFW_HAT_LEFT_DOWN },
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{ GLFW_HAT_RIGHT, GLFW_HAT_RIGHT_UP, GLFW_HAT_RIGHT_DOWN },
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};
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int hat = (code - ABS_HAT0X) / 2;
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int axis = (code - ABS_HAT0X) % 2;
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int *state = js->linjs.hats[hat];
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const int hat = (code - ABS_HAT0X) / 2;
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const int axis = (code - ABS_HAT0X) % 2;
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int* state = js->linjs.hats[hat];
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// Looking at several input drivers, it seems all hat events use
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// -1 for left / up, 0 for centered and 1 for right / down
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// NOTE: Looking at several input drivers, it seems all hat events use
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// -1 for left / up, 0 for centered and 1 for right / down
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if (value == 0)
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state[axis] = 0;
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else if (value < 0)
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@ -79,15 +80,15 @@ static void handleAbsEvent(_GLFWjoystick* js, int code, int value)
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}
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else
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{
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struct input_absinfo *info = &js->linjs.absInfo[code];
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int range = info->maximum - info->minimum;
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const struct input_absinfo* info = &js->linjs.absInfo[code];
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float normalized = value;
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if (range != 0)
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const int range = info->maximum - info->minimum;
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if (range)
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{
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// Normalize from 0.0 -> 1.0
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// Normalize to 0.0 -> 1.0
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normalized = (normalized - info->minimum) / range;
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// Normalize from -1.0 -> 1.0
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// Normalize to -1.0 -> 1.0
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normalized = normalized * 2.0f - 1.0f;
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}
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@ -95,36 +96,38 @@ static void handleAbsEvent(_GLFWjoystick* js, int code, int value)
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}
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}
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static void pollJoystick(_GLFWjoystick* js)
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// Poll state of absolute axes
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//
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static void pollAbsState(_GLFWjoystick* js)
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{
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int i;
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int code;
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for (i = 0; i < ABS_CNT; i++)
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for (code = 0; code < ABS_CNT; code++)
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{
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if (js->linjs.absMap[i] < 0)
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if (js->linjs.absMap[code] < 0)
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continue;
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struct input_absinfo *info = &js->linjs.absInfo[i];
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struct input_absinfo* info = &js->linjs.absInfo[code];
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if (ioctl(js->linjs.fd, EVIOCGABS(i), info) < 0)
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if (ioctl(js->linjs.fd, EVIOCGABS(code), info) < 0)
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continue;
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handleAbsEvent(js, i, info->value);
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handleAbsEvent(js, code, info->value);
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}
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}
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#define isBitSet(bit, arr) (arr[(bit) / 8] & (1 << ((bit) % 8)))
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// Attempt to open the specified joystick device
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//
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static GLFWbool openJoystickDevice(const char* path)
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{
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int jid, fd, i;
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int jid, code;
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char name[256] = "";
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char evBits[(EV_CNT + 7) / 8] = {0};
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char keyBits[(KEY_CNT + 7) / 8] = {0};
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char absBits[(ABS_CNT + 7) / 8] = {0};
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int axisCount = 0;
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int buttonCount = 0;
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int hatCount = 0;
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int axisCount = 0, buttonCount = 0, hatCount = 0;
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_GLFWjoystickLinux linjs = {0};
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_GLFWjoystick* js = NULL;
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@ -136,71 +139,81 @@ static GLFWbool openJoystickDevice(const char* path)
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return GLFW_FALSE;
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}
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fd = open(path, O_RDONLY | O_NONBLOCK);
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if (fd == -1)
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linjs.fd = open(path, O_RDONLY | O_NONBLOCK);
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if (linjs.fd == -1)
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return GLFW_FALSE;
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if (ioctl(linjs.fd, EVIOCGBIT(0, sizeof(evBits)), evBits) < 0 ||
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ioctl(linjs.fd, EVIOCGBIT(EV_KEY, sizeof(keyBits)), keyBits) < 0 ||
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ioctl(linjs.fd, EVIOCGBIT(EV_ABS, sizeof(absBits)), absBits) < 0)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Linux: Failed to query input device elements: %s",
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strerror(errno));
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close(linjs.fd);
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return GLFW_FALSE;
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}
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// Ensure this device supports the events expected of a joystick
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if (ioctl(fd, EVIOCGBIT(0, sizeof(evBits)), evBits) < 0 ||
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ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keyBits)), keyBits) < 0 ||
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ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absBits)), absBits) < 0 ||
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!TEST_BIT(EV_KEY, evBits) || !TEST_BIT(EV_ABS, evBits))
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if (!isBitSet(EV_KEY, evBits) || !isBitSet(EV_ABS, evBits))
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{
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close(fd);
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close(linjs.fd);
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return GLFW_FALSE;
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}
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if (ioctl(fd, EVIOCGNAME(sizeof(name)), name) < 0)
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if (ioctl(linjs.fd, EVIOCGNAME(sizeof(name)), name) < 0)
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strncpy(name, "Unknown", sizeof(name));
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for (i = BTN_MISC; i < KEY_CNT; i++)
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for (code = BTN_MISC; code < KEY_CNT; code++)
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{
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if (!TEST_BIT(i, keyBits))
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if (!isBitSet(code, keyBits))
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continue;
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linjs.keyMap[i] = buttonCount++;
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linjs.keyMap[code - BTN_MISC] = buttonCount;
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buttonCount++;
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}
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for (i = 0; i < ABS_CNT; i++)
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for (code = 0; code < ABS_CNT; code++)
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{
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linjs.absMap[i] = -1;
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if (!TEST_BIT(i, absBits))
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linjs.absMap[code] = -1;
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if (!isBitSet(code, absBits))
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continue;
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if (i >= ABS_HAT0X && i <= ABS_HAT3Y)
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if (code >= ABS_HAT0X && code <= ABS_HAT3Y)
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{
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linjs.absMap[i] = hatCount++;
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linjs.absMap[code] = hatCount;
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hatCount++;
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// Skip the Y axis
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i++;
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code++;
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}
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else
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{
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if (ioctl(fd, EVIOCGABS(i), &linjs.absInfo[i]) < 0)
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if (ioctl(linjs.fd, EVIOCGABS(code), &linjs.absInfo[code]) < 0)
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continue;
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linjs.absMap[i] = axisCount++;
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linjs.absMap[code] = axisCount;
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axisCount++;
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}
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}
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js = _glfwAllocJoystick(name, axisCount, buttonCount, hatCount);
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if (!js)
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{
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close(fd);
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close(linjs.fd);
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return GLFW_FALSE;
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}
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linjs.fd = fd;
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strncpy(linjs.path, path, sizeof(linjs.path));
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memcpy(&js->linjs, &linjs, sizeof(linjs));
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// Set initial values for absolute axes
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pollJoystick(js);
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pollAbsState(js);
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_glfwInputJoystick(_GLFW_JOYSTICK_ID(js), GLFW_CONNECTED);
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return GLFW_TRUE;
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}
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#undef isBitSet
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// Frees all resources associated with the specified joystick
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//
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static void closeJoystick(_GLFWjoystick* js)
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@ -391,8 +404,7 @@ int _glfwPlatformPollJoystick(int jid, int mode)
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else if (e.type == EV_ABS)
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handleAbsEvent(js, e.code, e.value);
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else if (e.type == EV_SYN && e.code == SYN_DROPPED)
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// Refresh axes
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pollJoystick(js);
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pollAbsState(js);
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}
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return js->present;
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@ -35,21 +35,21 @@
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//
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typedef struct _GLFWjoystickLinux
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{
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int fd;
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char path[PATH_MAX];
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int keyMap[KEY_CNT];
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int absMap[ABS_CNT];
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struct input_absinfo absInfo[ABS_CNT];
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int hats[4][2];
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int fd;
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char path[PATH_MAX];
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int keyMap[KEY_CNT - BTN_MISC];
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int absMap[ABS_CNT];
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struct input_absinfo absInfo[ABS_CNT];
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int hats[4][2];
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} _GLFWjoystickLinux;
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// Linux-specific joystick API data
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//
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typedef struct _GLFWlibraryLinux
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{
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int inotify;
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int watch;
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regex_t regex;
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int inotify;
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int watch;
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regex_t regex;
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} _GLFWlibraryLinux;
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