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cc65/include/mouse.h
uz 16e6deaf86 Changed the mouse API: mouse_box is gone, there are now mouse_getbox and
mouse_setbox instead. Beware: Current drivers will crash until they're
changed!


git-svn-id: svn://svn.cc65.org/cc65/trunk@4230 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-09-26 11:11:14 +00:00

193 lines
7.5 KiB
C

/*****************************************************************************/
/* */
/* mouse.h */
/* */
/* Mouse API */
/* */
/* */
/* */
/* (C) 2003-2009, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef _MOUSE_H
#define _MOUSE_H
/*****************************************************************************/
/* Definitions */
/*****************************************************************************/
/* Error codes */
#define MOUSE_ERR_OK 0 /* No error */
#define MOUSE_ERR_NO_DRIVER 1 /* No driver available */
#define MOUSE_ERR_CANNOT_LOAD 2 /* Error loading driver */
#define MOUSE_ERR_INV_DRIVER 3 /* Invalid driver */
#define MOUSE_ERR_NO_DEVICE 4 /* Mouse hardware not found */
#define MOUSE_ERR_INV_IOCTL 5 /* Invalid ioctl code */
/* Mouse button masks */
#define MOUSE_BTN_LEFT 0x10
#define MOUSE_BTN_RIGHT 0x01
/* Structure containing the mouse coordinates */
struct mouse_pos {
int x;
int y;
};
/* Structure containing information about the mouse */
struct mouse_info {
struct mouse_pos pos; /* Mouse position */
unsigned char buttons; /* Mouse button mask */
};
/* Structure used for getbox/setbox */
struct mouse_box {
int minx;
int miny;
int maxx;
int maxy;
};
/* Structure containing mouse callback functions. These functions are declared
* in C notation here, but they cannot be C functions (at least not easily),
* since they may be called from within an interrupt.
*/
struct mouse_callbacks {
void (*hide) (void);
/* Hide the mouse cursor. */
void (*show) (void);
/* Show the mouse cursor */
void __fastcall__ (*movex) (int x);
/* Move the mouse cursor to the new X coordinate. This function is called,
* even when the cursor is currently invisible.
*/
void __fastcall__ (*movey) (int y);
/* Move the mouse cursor to the new Y coordinate. This function is called,
* even when the cursor is currently invisible.
*/
};
/* The default mouse callbacks */
extern const struct mouse_callbacks mouse_def_callbacks;
/* The name of the standard mouse driver for a platform */
extern const char mouse_stddrv[];
/*****************************************************************************/
/* Functions */
/*****************************************************************************/
unsigned char __fastcall__ mouse_load_driver (const struct mouse_callbacks* c,
const char* driver);
/* Load and install a mouse driver, return an error code. */
unsigned char __fastcall__ mouse_unload (void);
/* Uninstall, then unload the currently loaded driver. */
unsigned char __fastcall__ mouse_install (const struct mouse_callbacks* c,
void* driver);
/* Install an already loaded driver. Returns an error code. */
unsigned char __fastcall__ mouse_uninstall (void);
/* Uninstall the currently loaded driver. Returns an error code. */
const char* __fastcall__ mouse_geterrormsg (unsigned char code);
/* Get an error message describing the error in code. */
void __fastcall__ mouse_hide (void);
/* Hide the mouse. The function manages a counter and may be called more than
* once. For each call to mouse_hide there must be a call to mouse_show to make
* the mouse visible again.
*/
void __fastcall__ mouse_show (void);
/* Show the mouse. See mouse_hide for more information. */
void __fastcall__ mouse_setbox (const struct mouse_box* box);
/* Set the bounding box for the mouse pointer movement. The mouse X and Y
* coordinates will never go outside the given box.
* NOTE: The function does *not* check if the mouse is currently inside the
* given margins. The proper way to use this function therefore is:
*
* - Hide the mouse
* - Set the bounding box
* - Place the mouse at the desired position
* - Show the mouse again.
*
* NOTE2: When setting the box to something that is larger than the actual
* screen, the positioning of the mouse cursor can fail. If such margins
* are really what you want, you have to use your own cursor routines.
*/
void __fastcall__ mouse_getbox (struct mouse_box* box);
/* Get the current bounding box for the mouse pointer movement. */
void __fastcall__ mouse_move (int x, int y);
/* Set the mouse cursor to the given position. If a mouse cursor is defined
* and currently visible, the mouse cursor is also moved.
* NOTE: This function does not check if the given position is valid and
* inside the bounding box.
*/
unsigned char __fastcall__ mouse_buttons (void);
/* Return a bit mask encoding the states of the mouse buttons. Use the
* MOUSE_BTN_XXX flags to decode a specific button.
*/
void __fastcall__ mouse_pos (struct mouse_pos* pos);
/* Return the current mouse position */
void __fastcall__ mouse_info (struct mouse_info* info);
/* Return the state of the mouse buttons and the position of the mouse */
unsigned char __fastcall__ mouse_ioctl (unsigned char code, void* data);
/* Call the driver specific ioctl function. NON PORTABLE! Returns an error
* code.
*/
/* End of mouse.h */
#endif