grafX2/src/palette.h
Adrien Destugues 32ec828835 Group all copyright statements in a single file.
This gives a much clearer overview of the licensing.

It also shows there are some problems:
- Some files are under GPLv3 only
- Some files have no known license at all.
2020-12-19 21:56:33 +00:00

67 lines
2.5 KiB
C

/* vim:expandtab:ts=2 sw=2:
*/
/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright owned by various GrafX2 authors, see COPYRIGHT.txt for details.
Grafx2 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2
of the License.
Grafx2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grafx2; if not, see <http://www.gnu.org/licenses/>
*/
//////////////////////////////////////////////////////////////////////////////
///@file palette.h
/// Palette screen, and some palette-related high-level functions.
//////////////////////////////////////////////////////////////////////////////
/// Open the palette menu and handles everything inside it.
void Button_Palette(int);
/// Open the secondary palette menu and handles it.
void Button_Secondary_palette(int);
/// Choose the number of graduations for RGB components, from 2 to 256.
void Set_palette_RGB_scale(int);
int Get_palette_RGB_scale(void);
/// Configure Gamma correction
void Set_palette_Gamma(int);
///
/// Scale a component (R, G or B) according to the current RGB graduations.
/// Returns the resulting value, in the [0-255] range.
byte Round_palette_component(byte comp);
/// Turns a RGB component from 0-255 to 0-(RGB_scale-1)
/// with Gamma correction.
int Encode_component(int comp);
/*!
Adds 4 menu colors in the current palette.
@param color_usage An up-to-date color usage table (byte[256]) (read only)
@param not_picture 0 if the caller is the palette screen, 1 if it's a preview in the file selector.
*/
void Set_nice_menu_colors(dword * color_usage,int not_picture);
/// Put some colors in the clipboard.
/// @param nb_colors Number of colors to push
/// @param colors First color of the input array
void Set_clipboard_colors(int nb_colors, T_Components *colors);
/// Get some RGB colors from clipboard.
/// @param palette Target palette
/// @param start_color Index of first color to replace
/// @return Number of colors retrieved (0-256)
int Get_clipboard_colors(T_Palette palette, byte start_color);
/// Get the favorite color to use for GUI's black,dark,light or white.
const T_Components * Favorite_GUI_color(byte color_index);