ref: b63977758f1073c16cfffc3916200d1e4b21c03b
dir: /src/setup/txt_joyaxis.h/
// // Copyright(C) 2005-2014 Simon Howard // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // #ifndef TXT_JOY_AXIS_H #define TXT_JOY_AXIS_H typedef struct txt_joystick_axis_s txt_joystick_axis_t; typedef enum { JOYSTICK_AXIS_HORIZONTAL, JOYSTICK_AXIS_VERTICAL, } txt_joystick_axis_direction_t; typedef enum { CONFIG_CENTER, // "Center the joystick and press a button..." CONFIG_STAGE1, // "Top or left and press a button..." CONFIG_STAGE2, // [Optional] "Bottom or right and press a button..." } txt_joystick_axis_stage_t; // Callback invoked when calibration is completed. typedef void (*txt_joystick_axis_callback_t)(void); #include "txt_widget.h" #include "txt_window.h" #include "SDL.h" // // A joystick axis. // struct txt_joystick_axis_s { txt_widget_t widget; int *axis, *invert; txt_joystick_axis_direction_t dir; // Only used when configuring: // Configuration prompt window and label. txt_window_t *config_window; txt_label_t *config_label; // SDL joystick handle for reading joystick state. SDL_Joystick *joystick; // "Bad" joystick axes. Sometimes an axis can be stuck or "bad". An // example I found is that if you unplug the nunchuck extension from // a Wii remote, the axes from the nunchuck can be stuck at one of // the maximum values. These have to be ignored, so when we ask the // user to center the joystick, we look for bad axes that are not // close to zero. boolean *bad_axis; // Stage we have reached in configuring joystick axis. txt_joystick_axis_stage_t config_stage; // Button to press to advance to next stage. int config_button; // Callback invoked when the axis is calibrated. txt_joystick_axis_callback_t callback; }; txt_joystick_axis_t *TXT_NewJoystickAxis(int *axis, int *invert, txt_joystick_axis_direction_t dir); // Configure a joystick axis widget. // axis: The axis widget to configure. // using_button: If non-negative, use this joystick button as the button // to expect from the user. Otherwise, ask. void TXT_ConfigureJoystickAxis(txt_joystick_axis_t *axis, int using_button, txt_joystick_axis_callback_t callback); #endif /* #ifndef TXT_JOY_AXIS_H */