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