WebSVN - shark - Blame - Rev 1030 - /shark/trunk/drivers/input/shark/mcurgrx.c

Rev	Author	Line No.	Line
538	mauro	1	/*
		2	* Project: S.Ha.R.K.
		3	*
		4	* Coordinators:
		5	* Giorgio Buttazzo <giorgio@sssup.it>
		6	* Paolo Gai <pj@gandalf.sssup.it>
		7	*
		8	* Authors :
		9	* Paolo Gai <pj@gandalf.sssup.it>
		10	* Massimiliano Giorgi <massy@gandalf.sssup.it>
		11	* Luca Abeni <luca@gandalf.sssup.it>
1030	tullio	12	* Tullio Facchinetti <tullio.facchinetti@unipv.it>
538	mauro	13	* (see the web pages for full authors list)
		14	*
		15	* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
		16	*
		17	* http://www.sssup.it
		18	* http://retis.sssup.it
		19	* http://shark.sssup.it
		20	*/
		21
		22	/---------------
		23	* GRX Management*
		24	---------------/
		25
		26	#include <kernel/kern.h>
		27	//#include <drivers/glib.h>
		28
		29	#include "../include/drivers/shark_input26.h"
		30	#include "../include/drivers/shark_mouse26.h"
		31
		32	/* External functions */
1030	tullio	33	extern void grx_getimage(WORD x1, WORD y1, WORD x2, WORD y2, WORD *buf); // Tool
		34	extern void grx_putimage(WORD x1, WORD y1, WORD x2, WORD y2, WORD *buf); // Tool
538	mauro	35	extern int _mouse_cursor_init(int cmd, void(my_show_cursor)(int, int), void(my_restore_cursor)(int, int));
		36	extern void _mouse_cursor_getposition(int xptr, int yptr);
		37
		38	extern int autocursormode;
		39
		40	static BYTE left_ptr_bits[] = { 0x00, 0x00, 0x08, 0x00, 0x18, 0x00, 0x38, 0x00,
		41	0x78, 0x00, 0xf8, 0x00, 0xf8, 0x01, 0xf8, 0x03,
		42	0xf8, 0x07, 0xf8, 0x00, 0xd8, 0x00, 0x88, 0x01,
		43	0x80, 0x01, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00 };
		44
		45
		46	static BYTE left_ptrmsk_bits[] = { 0x0c, 0x00, 0x1c, 0x00, 0x3c, 0x00, 0x7c, 0x00,
		47	0xfc, 0x00, 0xfc, 0x01, 0xfc, 0x03, 0xfc, 0x07,
		48	0xfc, 0x0f, 0xfc, 0x0f, 0xfc, 0x01, 0xdc, 0x03,
		49	0xcc, 0x03, 0x80, 0x07, 0x80, 0x07, 0x00, 0x03 };
		50
		51	/* dimensions (16x16) */
		52	#define SHAPE_DX MOUSESHAPEDX
		53	#define SHAPE_DY MOUSESHAPEDY
		54
		55	/* shape hot spot (3,1) */
		56	#define HOTSPOT_X MOUSEHOTSPOTX
		57	#define HOTSPOT_Y MOUSEHOTSPOTY
		58
		59	/* cursor shape */
		60	static BYTE shape[SHAPE_DX * SHAPE_DY * 4];
		61	/* cursor mask */
		62	static BYTE mask[SHAPE_DX * SHAPE_DY * 4];
		63
		64	/* old memory buffer */
		65	static BYTE saved_shape[SHAPE_DX * SHAPE_DY * 4];
		66	/* new memory buffer */
		67	static BYTE new_shape[SHAPE_DX * SHAPE_DY * 4];
		68
		69	static BYTE saved_shapeptr = (void)DEFAULT;
		70	static BYTE saved_maskptr = (void)DEFAULT;
		71
		72	static int bpp; // bytes per pixel
		73
		74	/* if called with NULL -> retrieve next bit of a bits-stream
		75	* else -> initialize the bit stream
		76	*/
		77	static int get_bit(BYTE *p)
		78	{
		79	static BYTE *ptr;
		80	static BYTE val;
		81	static int c;
		82
		83	if (p != NULL) {
		84	ptr = p;
		85	val = 0;
		86	c = 8;
		87	return 0;
		88	}
		89
		90	if (c==8) {
		91	c = 0;
		92	val = *ptr;
		93	ptr++;
		94	} else
		95	val >>= 1;
		96
		97	c++;
		98	return val&1;
		99	}
		100
		101	/* show grx cursor */
		102	static void show_grx_cursor(int x, int y)
		103	{
		104	int i;
		105
		106	x -= HOTSPOT_X - 1;
		107	y -= HOTSPOT_Y - 1;
		108	grx_getimage(x, y, x+SHAPE_DX-1, y+SHAPE_DY-1, saved_shape);
		109	for(i=0; i < SHAPE_DXSHAPE_DYbpp/4; i++)
		110	((DWORD)new_shape)[i] = ( ((DWORD)saved_shape)[i] & ((DWORD)mask)[i] ) \| ((DWORD)shape)[i];
		111	grx_putimage(x, y, x+SHAPE_DX-1, y+SHAPE_DY-1, new_shape);
		112	}
		113
		114	/* restore grx cursor */
		115	static void restore_grx_cursor(int x, int y)
		116	{
		117	x -= HOTSPOT_X - 1;
		118	y -= HOTSPOT_Y - 1;
		119	grx_putimage(x, y, x+SHAPE_DX-1, y+SHAPE_DY-1, saved_shape);
		120	}
		121
		122	int mouse_grxcursor(int cmd, int bpp)
		123	{
		124	mouse_grxshape(saved_shapeptr, saved_maskptr, bpp);
		125	return _mouse_cursor_init(cmd\|GRXCURSOR, show_grx_cursor, restore_grx_cursor);
		126	}
		127
		128	/* compute the shape and mask array */
		129	int mouse_grxshape(BYTE shapeptr, BYTE maskptr, int bpp_in)
		130	{
		131	BYTE b;
		132	int pc;
		133	int i,j;
		134	int saved_x, saved_y;
		135	int cond;
		136	/*int result;
		137	grx_vga_modeinfo info;*/
		138
		139	/* Autocalculate bpp */
		140	/*result = gd_getmodeinfo(&info);
		141	if (result == -1)
		142	return -1;
		143	bpp = info.bytesperpixel;*/
		144
		145	cond = ( ((autocursormode & STATUSMASK) == ENABLE) && ((autocursormode & GRXCURSOR) == GRXCURSOR) );
		146
		147	if (cond) {
		148	_mouse_cursor_getposition(&saved_x,&saved_y);
		149	restore_grx_cursor(saved_x,saved_y);
		150	}
		151
		152	if (bpp_in != -1)
		153	bpp = bpp_in;
		154
		155	if (shapeptr == (void*)DEFAULT) {
		156	shapeptr = left_ptr_bits;
		157	pc = 0;
		158	get_bit(left_ptr_bits);
		159	for (i = 0; i < SHAPE_DX*SHAPE_DY; i++) {
		160	b = get_bit(NULL) ? 255 : 0;
		161	for (j = 0; j < bpp; j++)
		162	shape[pc++] = b;
		163	}
		164	} else {
		165	memcpy(shape, shapeptr, SHAPE_DXSHAPE_DYbpp);
		166	saved_shapeptr = shapeptr;
		167	}
		168
		169	if (maskptr == (void*)DEFAULT) {
		170	maskptr = left_ptrmsk_bits;
		171	pc = 0;
		172	get_bit(left_ptrmsk_bits);
		173	for (i = 0; i < SHAPE_DX*SHAPE_DY; i++) {
		174	b=get_bit(NULL)?0:255;
		175	for (j = 0; j < bpp; j++)
		176	mask[pc++] = b;
		177	}
		178	} else {
		179	memcpy(mask, maskptr, SHAPE_DXSHAPE_DYbpp);
		180	saved_maskptr = maskptr;
		181	}
		182
		183	if (cond)
		184	show_grx_cursor(saved_x,saved_y);
		185
		186	return 0;
		187	}

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(root)/shark/trunk/drivers/input/shark/mcurgrx.c - Rev 1030