1 /*****************************************************************************/
5 /* Color palette definition for the sp65 sprite and bitmap utility */
9 /* (C) 2012, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
47 /*****************************************************************************/
49 /*****************************************************************************/
53 Palette* NewPalette (unsigned Entries)
54 /* Create a new palette with the given number of entries */
58 /* Some safety checks */
59 PRECONDITION (Entries > 0 && Entries <= 256);
62 P = xmalloc (sizeof (*P) + (Entries - 1) * sizeof (P->Entries[0]));
64 /* Initialize the struct, then return it */
71 Palette* NewMonochromePalette (void)
72 /* Create and return a palette with two entries (black and white) */
74 /* Create a new palette */
75 Palette* P = NewPalette (2);
77 /* Set the two colors */
78 P->Entries[0] = RGBA (0x00, 0x00, 0x00, 0x00);
79 P->Entries[1] = RGBA (0xFF, 0xFF, 0xFF, 0x00);
81 /* Return the new palette */
87 Palette* DupPalette (const Palette* P)
88 /* Create a copy of a palette */
93 /* Allow to pass a NULL palette */
98 /* Create a new palette */
99 N = NewPalette (P->Count);
101 /* Copy the palette data */
102 memcpy (N->Entries, P->Entries, P->Count * sizeof (P->Entries[0]));
104 /* Return the copy */
110 void FreePalette (Palette* P)
111 /* Free a dynamically allocated palette */
118 void DumpPalette (FILE* F, const Palette* P)
119 /* Dump the palette in readable form to the given file */
123 fputs ("Entry R G B A Combined\n", F);
124 fputs ("----------------------------------------------\n", F);
125 for (I = 0; I < P->Count; ++I) {
127 /* Get the color entry */
128 const Color* C = P->Entries + I;
132 " %3u %3u %3u %3u %3u #%08lX\n",
134 C->R, C->G, C->B, C->A,
135 (((unsigned long) C->A) << 24) |
136 (((unsigned long) C->B) << 16) |
137 (((unsigned long) C->G) << 8) |
138 (((unsigned long) C->R) << 0));