182 lines
7.7 KiB
C
182 lines
7.7 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/**
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* @file include/ginput/mouse.h
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* @brief GINPUT GFX User Input subsystem header file for mouse and touch.
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*
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* @defgroup Mouse Mouse
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* @ingroup GINPUT
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*
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* @details GINPUT allows it to easily interface touchscreens and mices to
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* your application.
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*
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* @pre GFX_USE_GINPUT must be set to TRUE in your gfxconf.h
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* @pre GINPUT_NEED_MOUSE must be set to TRUE in your gfxconf.h
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*
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* @{
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*/
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#ifndef _GINPUT_MOUSE_H
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#define _GINPUT_MOUSE_H
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#if GINPUT_NEED_MOUSE || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Type definitions */
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/*===========================================================================*/
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/* This type definition is also used by touch */
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typedef struct GEventMouse_t {
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GEventType type; // The type of this event (GEVENT_MOUSE or GEVENT_TOUCH)
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uint16_t instance; // The mouse/touch instance
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coord_t x, y, z; // The position of the mouse.
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// - For touch devices, Z is the current pressure if supported (otherwise 0)
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// - For mice, Z is the 3rd dimension if supported (otherwise 0)
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uint16_t current_buttons; // A bit is set if the button is down.
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// - For touch only bit 0 is relevant
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// - For mice the order of the buttons is (from 0 to n) left, right, middle, any other buttons
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// - Bit 15 being set indicates that an important mouse event has been missed.
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#define GINPUT_MOUSE_BTN_LEFT 0x0001
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#define GINPUT_MOUSE_BTN_RIGHT 0x0002
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#define GINPUT_MOUSE_BTN_MIDDLE 0x0004
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#define GINPUT_MOUSE_BTN_4 0x0008
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#define GINPUT_MISSED_MOUSE_EVENT 0x8000
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#define GINPUT_TOUCH_PRESSED GINPUT_MOUSE_BTN_LEFT
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uint16_t last_buttons; // The value of current_buttons on the last event
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enum GMouseMeta_e {
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GMETA_NONE = 0, // There is no meta event currently happening
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GMETA_MOUSE_DOWN = 1, // Button 0 has just gone down
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GMETA_MOUSE_UP = 2, // Button 0 has just gone up
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GMETA_MOUSE_CLICK = 4, // Button 0 has just gone through a short down - up cycle
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GMETA_MOUSE_CXTCLICK = 8 // For mice - The right button has just been depressed
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// For touch - a long press has just occurred
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} meta;
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GDisplay * display; // The display this mouse is currently associated with.
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} GEventMouse;
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// Mouse/Touch Listen Flags - passed to geventAddSourceToListener()
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#define GLISTEN_MOUSEMETA 0x0001 // Create events for meta events such as CLICK and CXTCLICK
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#define GLISTEN_MOUSEDOWNMOVES 0x0002 // Creates mouse move events when the primary mouse button is down (touch is on the surface)
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#define GLISTEN_MOUSEUPMOVES 0x0004 // Creates mouse move events when the primary mouse button is up (touch is off the surface - if the hardware allows).
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#define GLISTEN_MOUSENOFILTER 0x0008 // Don't filter out mouse moves where the position hasn't changed.
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#define GLISTEN_TOUCHMETA GLISTEN_MOUSEMETA
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#define GLISTEN_TOUCHDOWNMOVES GLISTEN_MOUSEDOWNMOVES
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#define GLISTEN_TOUCHUPMOVES GLISTEN_MOUSEUPMOVES
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#define GLISTEN_TOUCHNOFILTER GLISTEN_MOUSENOFILTER
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#define GINPUT_MOUSE_NUM_PORTS 1 // The total number of mouse/touch inputs supported
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// Event types for the mouse ginput source
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#define GEVENT_MOUSE (GEVENT_GINPUT_FIRST+0)
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#define GEVENT_TOUCH (GEVENT_GINPUT_FIRST+1)
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Creates an instance of a mouse and returns the Source handler
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* @note HACK: if the instance is 9999, it is treated as instance 0 except
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* that no calibration will be performed!
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*
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* @param[in] instance The ID of the mouse input instance (from 0 to 9999)
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*
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* @return The source handle of the created instance
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*/
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GSourceHandle ginputGetMouse(uint16_t instance);
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/**
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* @brief Assign the display associated with the mouse
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* @note This only needs to be called if the mouse is associated with a display
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* other than the current default display. It must be called before
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* @p ginputGetMouse() if the new display is to be used during the calibration
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* process. Other than calibration the display is used for range checking,
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* and may also be used to display a mouse pointer.
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*
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* @param[in] instance The ID of the mouse input instance
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* @param[in] g The GDisplay to which this mouse belongs
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*/
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void ginputSetMouseDisplay(uint16_t instance, GDisplay *g);
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/**
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* @brief Get the display currently associated with the mouse
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* @return A pointer to the display
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*
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* @param[in] instance The ID of the mouse input instance
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*/
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GDisplay *ginputGetMouseDisplay(uint16_t instance);
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/**
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* @brief Get the current mouse position and button status
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* @note Unlinke a listener event, this status cannot record meta events such as
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* "CLICK".
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*
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* @param[in] instance The ID of the mouse input instance
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* @param[in] pmouse The mouse event
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*
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* @return FALSE on an error (eg. invalid instance)
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*/
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bool_t ginputGetMouseStatus(uint16_t instance, GEventMouse *pmouse);
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/**
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* @brief Performs a calibration
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*
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* @param[in] instance The ID of the mouse input instance
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*
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* @return FALSE if the driver dosen't support a calibration of if the handle is invalid
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*/
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bool_t ginputCalibrateMouse(uint16_t instance);
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/* Set the routines to save and fetch calibration data.
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* This function should be called before first calling ginputGetMouse() for a particular instance
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* as the gdispGetMouse() routine may attempt to fetch calibration data and perform a startup calibration if there is no way to get it.
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* If this is called after gdispGetMouse() has been called and the driver requires calibration storage, it will immediately save the data is has already obtained.
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* The 'requireFree' parameter indicates if the fetch buffer must be free()'d to deallocate the buffer provided by the Fetch routine.
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*/
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typedef void (*GMouseCalibrationSaveRoutine)(uint16_t instance, const uint8_t *calbuf, size_t sz); // Save calibration data
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typedef const char * (*GMouseCalibrationLoadRoutine)(uint16_t instance); // Load calibration data (returns NULL if not data saved)
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/**
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* @brief Set the routines to store and restore calibration data
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*
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* @details This function should be called before first calling ginputGetMouse() for a particular instance
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* as the gdispGetMouse() routine may attempt to fetch calibration data and perform a startup calibration if there is no way to get it.
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* If this is called after gdispGetMouse() has been called and the driver requires calibration storage, it will immediately save the
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* data is has already obtained.
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*
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* @param[in] instance The ID of the mouse input instance
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* @param[in] fnsave The routine to save the data
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* @param[in] fnload The routine to restore the data
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* @param[in] requireFree TRUE if the buffer returned by the load function must be freed by the mouse code.
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*/
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void ginputSetMouseCalibrationRoutines(uint16_t instance, GMouseCalibrationSaveRoutine fnsave, GMouseCalibrationLoadRoutine fnload, bool_t requireFree);
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/**
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* @brief Test if a particular mouse/touch instance requires routines to save it's alibration data
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* @note Not implemented yet
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*
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* @param[in] instance The ID of the mouse input instance
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*
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* @return TRUE if needed
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*/
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bool_t ginputRequireMouseCalibrationStorage(uint16_t instance);
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#ifdef __cplusplus
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}
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#endif
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#endif /* GINPUT_NEED_MOUSE */
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#endif /* _GINPUT_MOUSE_H */
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/** @} */
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