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193 lines
7.5 KiB
C
193 lines
7.5 KiB
C
/*****************************************************************************/
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/* */
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/* mouse.h */
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/* */
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/* Mouse API */
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/* */
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/* */
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/* */
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/* (C) 2003-2011, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _MOUSE_H
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#define _MOUSE_H
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/*****************************************************************************/
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/* Definitions */
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/*****************************************************************************/
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/* Error codes */
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#define MOUSE_ERR_OK 0 /* No error */
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#define MOUSE_ERR_NO_DRIVER 1 /* No driver available */
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#define MOUSE_ERR_CANNOT_LOAD 2 /* Error loading driver */
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#define MOUSE_ERR_INV_DRIVER 3 /* Invalid driver */
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#define MOUSE_ERR_NO_DEVICE 4 /* Mouse hardware not found */
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#define MOUSE_ERR_INV_IOCTL 5 /* Invalid ioctl code */
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/* Mouse button masks */
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#define MOUSE_BTN_LEFT 0x10
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#define MOUSE_BTN_RIGHT 0x01
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/* Structure containing the mouse coordinates */
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struct mouse_pos {
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int x;
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int y;
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};
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/* Structure containing information about the mouse */
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struct mouse_info {
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struct mouse_pos pos; /* Mouse position */
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unsigned char buttons; /* Mouse button mask */
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};
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/* Structure used for getbox/setbox */
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struct mouse_box {
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int minx;
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int miny;
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int maxx;
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int maxy;
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};
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/* Structure containing mouse callback functions. These functions are declared
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* in C notation here, but they cannot be C functions (at least not easily),
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* since they may be called from within an interrupt.
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*/
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struct mouse_callbacks {
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void (*hide) (void);
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/* Hide the mouse cursor. */
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void (*show) (void);
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/* Show the mouse cursor */
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void __fastcall__ (*movex) (int x);
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/* Move the mouse cursor to the new X coordinate. This function is called,
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* even when the cursor is currently invisible.
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*/
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void __fastcall__ (*movey) (int y);
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/* Move the mouse cursor to the new Y coordinate. This function is called,
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* even when the cursor is currently invisible.
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*/
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};
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/* The default mouse callbacks */
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extern const struct mouse_callbacks mouse_def_callbacks;
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/* The name of the standard mouse driver for a platform */
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extern const char mouse_stddrv[];
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/*****************************************************************************/
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/* Functions */
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/*****************************************************************************/
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unsigned char __fastcall__ mouse_load_driver (const struct mouse_callbacks* c,
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const char* driver);
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/* Load and install a mouse driver, return an error code. */
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unsigned char mouse_unload (void);
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/* Uninstall, then unload the currently loaded driver. */
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unsigned char __fastcall__ mouse_install (const struct mouse_callbacks* c,
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void* driver);
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/* Install an already loaded driver. Returns an error code. */
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unsigned char mouse_uninstall (void);
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/* Uninstall the currently loaded driver. Returns an error code. */
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const char* __fastcall__ mouse_geterrormsg (unsigned char code);
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/* Get an error message describing the error in code. */
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void mouse_hide (void);
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/* Hide the mouse. The function manages a counter and may be called more than
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* once. For each call to mouse_hide there must be a call to mouse_show to make
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* the mouse visible again.
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*/
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void mouse_show (void);
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/* Show the mouse. See mouse_hide for more information. */
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void __fastcall__ mouse_setbox (const struct mouse_box* box);
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/* Set the bounding box for the mouse pointer movement. The mouse X and Y
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* coordinates will never go outside the given box.
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* NOTE: The function does *not* check if the mouse is currently inside the
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* given margins. The proper way to use this function therefore is:
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*
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* - Hide the mouse
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* - Set the bounding box
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* - Place the mouse at the desired position
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* - Show the mouse again.
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*
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* NOTE2: When setting the box to something that is larger than the actual
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* screen, the positioning of the mouse cursor can fail. If such margins
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* are really what you want, you have to use your own cursor routines.
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*/
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void __fastcall__ mouse_getbox (struct mouse_box* box);
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/* Get the current bounding box for the mouse pointer movement. */
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void __fastcall__ mouse_move (int x, int y);
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/* Set the mouse cursor to the given position. If a mouse cursor is defined
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* and currently visible, the mouse cursor is also moved.
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* NOTE: This function does not check if the given position is valid and
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* inside the bounding box.
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*/
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unsigned char mouse_buttons (void);
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/* Return a bit mask encoding the states of the mouse buttons. Use the
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* MOUSE_BTN_XXX flags to decode a specific button.
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*/
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void __fastcall__ mouse_pos (struct mouse_pos* pos);
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/* Return the current mouse position */
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void __fastcall__ mouse_info (struct mouse_info* info);
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/* Return the state of the mouse buttons and the position of the mouse */
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unsigned char __fastcall__ mouse_ioctl (unsigned char code, void* data);
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/* Call the driver specific ioctl function. NON PORTABLE! Returns an error
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* code.
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*/
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/* End of mouse.h */
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#endif
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