Function ButtonName

src/drivers/Qt/input.cpp:2039–2102

* Get the display name of the key or joystick button mapped to a specific * NES gamepad button. * @param bc the NES gamepad's button config * @param which the index of the button */

 * @param which the index of the button
 */
const char *ButtonName(const ButtConfig *bc)
{
	static char name[256];

	name[0] = 0;

	if (bc->ButtonNum == -1)
	{
		return name;
	}
	switch (bc->ButtType)
	{
	case BUTTC_KEYBOARD:
		return SDL_GetKeyName(bc->ButtonNum);
		break;
	case BUTTC_JOYSTICK:
	{
		int joyNum, inputNum;
		const char *inputType, *inputDirection;
		char direction[128] = "";

		joyNum = bc->DeviceNum;

		if (bc->ButtonNum & 0x8000)
		{
			inputType = "Axis";
			inputNum = bc->ButtonNum & 0x3FFF;
			inputDirection = bc->ButtonNum & 0x4000 ? "-" : "+";
		}
		else if (bc->ButtonNum & 0x2000)
		{
			int inputValue;

			inputType = "Hat";
			inputNum = (bc->ButtonNum >> 8) & 0x1F;
			inputValue = bc->ButtonNum & 0xF;

			if (inputValue & SDL_HAT_UP)
				strncat(direction, "Up ", sizeof(direction) - 1);
			if (inputValue & SDL_HAT_DOWN)
				strncat(direction, "Down ", sizeof(direction) - 1);
			if (inputValue & SDL_HAT_LEFT)
				strncat(direction, "Left ", sizeof(direction) - 1);
			if (inputValue & SDL_HAT_RIGHT)
				strncat(direction, "Right ", sizeof(direction) - 1);

			if (direction[0])
				inputDirection = direction;
			else
				inputDirection = "Center";
		}
		else
		{
			inputType = "Button";
			inputNum = bc->ButtonNum;
			inputDirection = "";
		}
		sprintf(name, "js%i:%s%i%s", joyNum, inputType, inputNum, inputDirection);