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Update linux_joystick.c

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IntellectualKitty 2016-11-25 20:58:00 -07:00 committed by GitHub
parent e42c2a4df4
commit 081f8004ef
1 changed files with 43 additions and 1 deletions
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44
src/linux_joystick.c
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@ -43,12 +43,17 @@
#endif // __linux__
// Since Linux does not seem to provide support for hat or POV switches in
// <linux/joystick.h> currently, future support for hat events has been stubbed
// in using the #defines JSIOCGHATS and JS_EVENT_HAT to follow the existing
// paradigm.
// Attempt to open the specified joystick device
//
#if defined(__linux__)
static GLFWbool openJoystickDevice(const char* path)
{
char axisCount, buttonCount;
char axisCount, buttonCount, hatCount;
char name[256] = "";
int jid, fd, version;
_GLFWjoystickLinux* js;
@ -101,6 +106,14 @@ static GLFWbool openJoystickDevice(const char* path)
js->buttonCount = (int) buttonCount;
js->buttons = calloc(buttonCount, 1);
#if defined(JSIOCGHATS)
ioctl(fd, JSIOCGHATS, &hatCount);
#else
hatCount = 0;
#endif
js->hatCount = (int) hatCount;
js->hats = calloc(hatCount, 1);
_glfwInputJoystickChange(jid, GLFW_CONNECTED);
return GLFW_TRUE;
}
@ -129,6 +142,7 @@ static GLFWbool pollJoystickEvents(_GLFWjoystickLinux* js)
{
free(js->axes);
free(js->buttons);
free(js->hats);
free(js->name);
free(js->path);
@ -148,6 +162,24 @@ static GLFWbool pollJoystickEvents(_GLFWjoystickLinux* js)
js->axes[e.number] = (float) e.value / 32767.0f;
else if (e.type == JS_EVENT_BUTTON)
js->buttons[e.number] = e.value ? GLFW_PRESS : GLFW_RELEASE;
#if defined(JS_EVENT_HAT)
else if (e.type == JS_EVENT_HAT)
{
const unsigned char directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 };
int j;
short value = e.value;
if (value < 0 || value > 8)
value = 8;
js->hats[e.number] = 0;
for (j = 0; j < 4; j++)
{
unsigned char bit_value = 1 << j;
if (directions[value] & bit_value)
js->hats[e.number] |= bit_value;
}
}
#endif
}
#endif // __linux__
return js->present;
@ -330,6 +362,16 @@ const unsigned char* _glfwPlatformGetJoystickButtons(int jid, int* count)
return js->buttons;
}
const unsigned char* _glfwPlatformGetJoystickHats(int jid, int* count)
{
_GLFWjoystickLinux* js = _glfw.linux_js.js + jid;
if (!pollJoystickEvents(js))
return NULL;
*count = js->hatCount;
return js->hats;
}
const char* _glfwPlatformGetJoystickName(int jid)
{
_GLFWjoystickLinux* js = _glfw.linux_js.js + jid;