1 | #include "qemu/osdep.h" |
2 | #include "ui/console.h" |
3 | |
4 | #include "cursor_hidden.xpm" |
5 | #include "cursor_left_ptr.xpm" |
6 | |
7 | /* for creating built-in cursors */ |
8 | static QEMUCursor *cursor_parse_xpm(const char *xpm[]) |
9 | { |
10 | QEMUCursor *c; |
11 | uint32_t ctab[128]; |
12 | unsigned int width, height, colors, chars; |
13 | unsigned int line = 0, i, r, g, b, x, y, pixel; |
14 | char name[16]; |
15 | uint8_t idx; |
16 | |
17 | /* parse header line: width, height, #colors, #chars */ |
18 | if (sscanf(xpm[line], "%u %u %u %u" , |
19 | &width, &height, &colors, &chars) != 4) { |
20 | fprintf(stderr, "%s: header parse error: \"%s\"\n" , |
21 | __func__, xpm[line]); |
22 | return NULL; |
23 | } |
24 | if (chars != 1) { |
25 | fprintf(stderr, "%s: chars != 1 not supported\n" , __func__); |
26 | return NULL; |
27 | } |
28 | line++; |
29 | |
30 | /* parse color table */ |
31 | for (i = 0; i < colors; i++, line++) { |
32 | if (sscanf(xpm[line], "%c c %15s" , &idx, name) == 2) { |
33 | if (sscanf(name, "#%02x%02x%02x" , &r, &g, &b) == 3) { |
34 | ctab[idx] = (0xff << 24) | (b << 16) | (g << 8) | r; |
35 | continue; |
36 | } |
37 | if (strcmp(name, "None" ) == 0) { |
38 | ctab[idx] = 0x00000000; |
39 | continue; |
40 | } |
41 | } |
42 | fprintf(stderr, "%s: color parse error: \"%s\"\n" , |
43 | __func__, xpm[line]); |
44 | return NULL; |
45 | } |
46 | |
47 | /* parse pixel data */ |
48 | c = cursor_alloc(width, height); |
49 | for (pixel = 0, y = 0; y < height; y++, line++) { |
50 | for (x = 0; x < height; x++, pixel++) { |
51 | idx = xpm[line][x]; |
52 | c->data[pixel] = ctab[idx]; |
53 | } |
54 | } |
55 | return c; |
56 | } |
57 | |
58 | /* nice for debugging */ |
59 | void cursor_print_ascii_art(QEMUCursor *c, const char *prefix) |
60 | { |
61 | uint32_t *data = c->data; |
62 | int x,y; |
63 | |
64 | for (y = 0; y < c->height; y++) { |
65 | fprintf(stderr, "%s: %2d: |" , prefix, y); |
66 | for (x = 0; x < c->width; x++, data++) { |
67 | if ((*data & 0xff000000) != 0xff000000) { |
68 | fprintf(stderr, " " ); /* transparent */ |
69 | } else if ((*data & 0x00ffffff) == 0x00ffffff) { |
70 | fprintf(stderr, "." ); /* white */ |
71 | } else if ((*data & 0x00ffffff) == 0x00000000) { |
72 | fprintf(stderr, "X" ); /* black */ |
73 | } else { |
74 | fprintf(stderr, "o" ); /* other */ |
75 | } |
76 | } |
77 | fprintf(stderr, "|\n" ); |
78 | } |
79 | } |
80 | |
81 | QEMUCursor *cursor_builtin_hidden(void) |
82 | { |
83 | return cursor_parse_xpm(cursor_hidden_xpm); |
84 | } |
85 | |
86 | QEMUCursor *cursor_builtin_left_ptr(void) |
87 | { |
88 | return cursor_parse_xpm(cursor_left_ptr_xpm); |
89 | } |
90 | |
91 | QEMUCursor *cursor_alloc(int width, int height) |
92 | { |
93 | QEMUCursor *c; |
94 | int datasize = width * height * sizeof(uint32_t); |
95 | |
96 | c = g_malloc0(sizeof(QEMUCursor) + datasize); |
97 | c->width = width; |
98 | c->height = height; |
99 | c->refcount = 1; |
100 | return c; |
101 | } |
102 | |
103 | void cursor_get(QEMUCursor *c) |
104 | { |
105 | c->refcount++; |
106 | } |
107 | |
108 | void cursor_put(QEMUCursor *c) |
109 | { |
110 | if (c == NULL) |
111 | return; |
112 | c->refcount--; |
113 | if (c->refcount) |
114 | return; |
115 | g_free(c); |
116 | } |
117 | |
118 | int cursor_get_mono_bpl(QEMUCursor *c) |
119 | { |
120 | return DIV_ROUND_UP(c->width, 8); |
121 | } |
122 | |
123 | void cursor_set_mono(QEMUCursor *c, |
124 | uint32_t foreground, uint32_t background, uint8_t *image, |
125 | int transparent, uint8_t *mask) |
126 | { |
127 | uint32_t *data = c->data; |
128 | uint8_t bit; |
129 | int x,y,bpl; |
130 | bool expand_bitmap_only = image == mask; |
131 | bool has_inverted_colors = false; |
132 | const uint32_t inverted = 0x80000000; |
133 | |
134 | /* |
135 | * Converts a monochrome bitmap with XOR mask 'image' and AND mask 'mask': |
136 | * https://docs.microsoft.com/en-us/windows-hardware/drivers/display/drawing-monochrome-pointers |
137 | */ |
138 | bpl = cursor_get_mono_bpl(c); |
139 | for (y = 0; y < c->height; y++) { |
140 | bit = 0x80; |
141 | for (x = 0; x < c->width; x++, data++) { |
142 | if (transparent && mask[x/8] & bit) { |
143 | if (!expand_bitmap_only && image[x / 8] & bit) { |
144 | *data = inverted; |
145 | has_inverted_colors = true; |
146 | } else { |
147 | *data = 0x00000000; |
148 | } |
149 | } else if (!transparent && !(mask[x/8] & bit)) { |
150 | *data = 0x00000000; |
151 | } else if (image[x/8] & bit) { |
152 | *data = 0xff000000 | foreground; |
153 | } else { |
154 | *data = 0xff000000 | background; |
155 | } |
156 | bit >>= 1; |
157 | if (bit == 0) { |
158 | bit = 0x80; |
159 | } |
160 | } |
161 | mask += bpl; |
162 | image += bpl; |
163 | } |
164 | |
165 | /* |
166 | * If there are any pixels with inverted colors, create an outline (fill |
167 | * transparent neighbors with the background color) and use the foreground |
168 | * color as "inverted" color. |
169 | */ |
170 | if (has_inverted_colors) { |
171 | data = c->data; |
172 | for (y = 0; y < c->height; y++) { |
173 | for (x = 0; x < c->width; x++, data++) { |
174 | if (*data == 0 /* transparent */ && |
175 | ((x > 0 && data[-1] == inverted) || |
176 | (x + 1 < c->width && data[1] == inverted) || |
177 | (y > 0 && data[-c->width] == inverted) || |
178 | (y + 1 < c->height && data[c->width] == inverted))) { |
179 | *data = 0xff000000 | background; |
180 | } |
181 | } |
182 | } |
183 | data = c->data; |
184 | for (x = 0; x < c->width * c->height; x++, data++) { |
185 | if (*data == inverted) { |
186 | *data = 0xff000000 | foreground; |
187 | } |
188 | } |
189 | } |
190 | } |
191 | |
192 | void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *image) |
193 | { |
194 | uint32_t *data = c->data; |
195 | uint8_t bit; |
196 | int x,y,bpl; |
197 | |
198 | bpl = cursor_get_mono_bpl(c); |
199 | memset(image, 0, bpl * c->height); |
200 | for (y = 0; y < c->height; y++) { |
201 | bit = 0x80; |
202 | for (x = 0; x < c->width; x++, data++) { |
203 | if (((*data & 0xff000000) == 0xff000000) && |
204 | ((*data & 0x00ffffff) == foreground)) { |
205 | image[x/8] |= bit; |
206 | } |
207 | bit >>= 1; |
208 | if (bit == 0) { |
209 | bit = 0x80; |
210 | } |
211 | } |
212 | image += bpl; |
213 | } |
214 | } |
215 | |
216 | void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask) |
217 | { |
218 | uint32_t *data = c->data; |
219 | uint8_t bit; |
220 | int x,y,bpl; |
221 | |
222 | bpl = cursor_get_mono_bpl(c); |
223 | memset(mask, 0, bpl * c->height); |
224 | for (y = 0; y < c->height; y++) { |
225 | bit = 0x80; |
226 | for (x = 0; x < c->width; x++, data++) { |
227 | if ((*data & 0xff000000) != 0xff000000) { |
228 | if (transparent != 0) { |
229 | mask[x/8] |= bit; |
230 | } |
231 | } else { |
232 | if (transparent == 0) { |
233 | mask[x/8] |= bit; |
234 | } |
235 | } |
236 | bit >>= 1; |
237 | if (bit == 0) { |
238 | bit = 0x80; |
239 | } |
240 | } |
241 | mask += bpl; |
242 | } |
243 | } |
244 | |