palette.c File Reference

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "const.h"
#include "struct.h"
#include "global.h"
#include "misc.h"
#include "engine.h"
#include "readline.h"
#include "buttons.h"
#include "pages.h"
#include "help.h"
#include "screen.h"
#include "errors.h"
#include "op_c.h"
#include "windows.h"
#include "input.h"
#include "graph.h"
#include "palette.h"
#include "shade.h"

Include dependency graph for palette.c:

Functions
static void	Component_unit (int count)
void	Set_palette_RGB_scale (int scale)
	Choose the number of graduations for RGB components, from 2 to 256. More...
int	Get_palette_RGB_scale (void)
void	Set_palette_Gamma (int gamma)
	Configure Gamma correction. More...
byte	Round_palette_component (byte comp)
	Round a 0-255 RGB component according to the RGB_scale and gamm correction. More...
static int	Decode_component (int comp)
	Turns a RGB component from 0-(RGB_scale-1) scale to 0-255 and apply reverse. More...
int	Encode_component (int comp)
	Turns a RGB component from 0-255 to 0-(RGB_scale-1) and apply Gamma correction. More...
static int	Add_encoded (int comp, int offset)
	Compute the component at a given distance from the current one. More...
void	Set_HSL (T_Palette start_palette, T_Palette end_palette, byte color, short diff_h, short diff_s, short diff_l)
void	Set_red (byte color, short new_color, T_Palette palette)
void	Set_green (byte color, short new_color, T_Palette palette)
void	Set_blue (byte color, short new_color, T_Palette palette)
void	Format_component (byte value, char *str)
void	Spread_colors (short start, short end, T_Palette palette)
void	Palette_edit_step ()
	Backup before doing one self-complete change. More...
void	Palette_edit_select_range ()
	Mode for incremental changes. More...
void	Palette_edit_alter_channel ()
	Perform incremental change in RGB channel of some color(s). More...
void	Palette_edit_undo_redo ()
	Undo. More...
void	Update_color_count (short *used_colors, dword *color_usage)
void	Remap_zone_highlevel (short x1, short y1, short x2, short y2, byte *conversion_table)
void	Remap_image_highlevel (byte *conversion_table)
void	Swap (int with_remap, short block_1_start, short block_2_start, short block_size, T_Palette palette, dword *color_usage)
void	Set_nice_menu_colors (dword *color_usage, int not_picture)
	Adds 4 menu colors in the current palette. More...
void	Reduce_palette (short *used_colors, int nb_colors_asked, T_Palette palette, dword *color_usage)
void	Set_palette_slider (T_Scroller_button *slider, word nb_elements, word position, char *value, short x_pos)
void	Display_sliders (T_Scroller_button *red_slider, T_Scroller_button *green_slider, T_Scroller_button *blue_slider, byte block_is_selected, T_Components *palette)
void	Draw_all_palette_sliders (T_Scroller_button *red_slider, T_Scroller_button *green_slider, T_Scroller_button *blue_slider, T_Palette palette, byte start, byte end)
int	Window_Histogram (unsigned char block_start, unsigned char block_end, dword *color_usage)
void	Print_RGB_or_HSL (byte mode)
void	Tag_used_colors (byte color, dword color_usage[])
void	Button_Palette (int btn)
	Open the palette menu and handles everything inside it. More...
void	Button_Secondary_palette (int btn)
	Open the secondary palette menu and handles it. More...
void	Set_clipboard_colors (int nb_colors, T_Components *colors)
	Put some colors in the clipboard. More...
int	Get_clipboard_colors (T_Palette palette, byte start_color)
	Get some RGB colors from clipboard. More...
const T_Components *	Favorite_GUI_color (byte color_index)
	Get the favorite color to use for GUI's black,dark,light or white. More...

Variables
static byte	Palette_view_is_RGB = 1
static float	Gamma = 1.0
static const int	COUNT_X = 138
static const int	COUNT_Y = 64
int	RGB_scale = 256
int	Color_count =256
int	Color_max =255
int	Color_halfstep =0
T_Components *	backup_palette
T_Components *	temp_palette
T_Components *	working_palette
byte	Palette_undo_state = 0
byte	Palette_change_state = 0
static const int	NUMERIC_R_X = 216
static const int	NUMERIC_G_X = 243
static const int	NUMERIC_B_X = 270
static const int	NUMERIC_Y = 183
static const int	NUMERIC_BOX_X = 215
static const int	NUMERIC_BOX_Y = 181
static const int	NUMERIC_BOX_W = 81
static const int	NUMERIC_BOX_H = 12
int	Palette_clipboard_count =0
T_Palette	Palette_clipboard

Function Documentation

Component_unit()

static void Component_unit ( int  count )

static

References Color_count, Color_halfstep, and Color_max.

Referenced by Button_Palette(), and Set_palette_RGB_scale().

Set_palette_RGB_scale()

void Set_palette_RGB_scale

(

int

scale

)

Choose the number of graduations for RGB components, from 2 to 256.

References Component_unit(), and RGB_scale.

Referenced by Analyze_command_line(), Button_Constraint_menu(), and Button_Secondary_palette().

Get_palette_RGB_scale()

int Get_palette_RGB_scale

(

void

)

References RGB_scale.

Referenced by Compute_optimal_menu_colors(), and PI1_code_palette().

Set_palette_Gamma()

void Set_palette_Gamma

(

int

gamma

)

Configure Gamma correction.

References Gamma.

Referenced by Analyze_command_line(), and Button_Constraint_menu().

Round_palette_component()

byte Round_palette_component

(

byte

comp

)

Round a 0-255 RGB component according to the RGB_scale and gamm correction.

Scale a component (R, G or B) according to the current RGB graduations.

The result is also in the 0-255 range.

References Gamma, and RGB_scale.

Referenced by Compute_optimal_menu_colors(), Set_blue(), Set_green(), Set_nice_menu_colors(), Set_palette(), and Set_red().

Decode_component()

static int Decode_component ( int  comp )

static

Turns a RGB component from 0-(RGB_scale-1) scale to 0-255 and apply reverse.

The passed value should come from Round_palette_component(), otherwise the rounding will be "down".

References Color_max, and Gamma.

Referenced by Add_encoded(), Button_Palette(), and Spread_colors().

Encode_component()

int Encode_component

(

int

comp

)

Turns a RGB component from 0-255 to 0-(RGB_scale-1) and apply Gamma correction.

Turns a RGB component from 0-255 to 0-(RGB_scale-1) with Gamma correction.

References Color_max, and Gamma.

Referenced by Add_encoded(), Display_sliders(), Draw_all_palette_sliders(), Spread_colors(), and Status_print_palette_color().

Add_encoded()

static int Add_encoded ( int  comp, int  offset  )

static

Compute the component at a given distance from the current one.

Used by the add/remove and lighten/darken operations.

References Decode_component(), and Encode_component().

Referenced by Button_Palette().

Set_HSL()

void Set_HSL	(	T_Palette	start_palette,
		T_Palette	end_palette,
		byte	color,
		short	diff_h,
		short	diff_s,
		short	diff_l
	)

References HSL_to_RGB(), and RGB_to_HSL().

Referenced by Button_Palette().

Set_red()

void Set_red	(	byte	color,
		short	new_color,
		T_Palette	palette
	)

References Round_palette_component().

Referenced by Button_Palette(), and Spread_colors().

Set_green()

void Set_green	(	byte	color,
		short	new_color,
		T_Palette	palette
	)

References Round_palette_component().

Referenced by Button_Palette(), and Spread_colors().

Set_blue()

void Set_blue	(	byte	color,
		short	new_color,
		T_Palette	palette
	)

References Round_palette_component().

Referenced by Button_Palette(), and Spread_colors().

Format_component()

void Format_component	(	byte	value,
		char *	str
	)

Referenced by Button_Palette(), Display_sliders(), and Draw_all_palette_sliders().

Spread_colors()

void Spread_colors	(	short	start,
		short	end,
		T_Palette	palette
	)

References Decode_component(), Encode_component(), Set_blue(), Set_green(), Set_palette(), and Set_red().

Referenced by Button_Palette().

Palette_edit_step()

void Palette_edit_step

(

)

Backup before doing one self-complete change.

References backup_palette, Palette_change_state, Palette_undo_state, and working_palette.

Referenced by Button_Palette().

Palette_edit_select_range()

void Palette_edit_select_range

(

)

Mode for incremental changes.

References Palette_change_state.

Referenced by Button_Palette().

Palette_edit_alter_channel()

void Palette_edit_alter_channel

(

)

Perform incremental change in RGB channel of some color(s).

References backup_palette, Palette_change_state, temp_palette, and working_palette.

Referenced by Button_Palette().

Palette_edit_undo_redo()

void Palette_edit_undo_redo

(

)

Undo.

References backup_palette, Palette_change_state, Palette_undo_state, temp_palette, and working_palette.

Referenced by Button_Palette().

Update_color_count()

void Update_color_count	(	short *	used_colors,
		dword *	color_usage
	)

References Count_used_colors(), COUNT_X, COUNT_Y, Cursor_shape, CURSOR_SHAPE_ARROW, CURSOR_SHAPE_HOURGLASS, Display_cursor(), Hide_cursor, MC_Black, MC_Light, Num2str, and Print_in_window().

Referenced by Button_Palette(), and Reduce_palette().

Remap_zone_highlevel()

void Remap_zone_highlevel	(	short	x1,
		short	y1,
		short	x2,
		short	y2,
		byte *	conversion_table
	)

References Menu_factor_X, Menu_factor_Y, Pixel, Read_pixel, Window_height, Window_pos_X, Window_pos_Y, and Window_width.

Referenced by Remap_image_highlevel(), and Set_nice_menu_colors().

Remap_image_highlevel()

void Remap_image_highlevel

(

byte *

conversion_table

)

References T_Document::backups, T_Page::Image, T_Bitmap::Image, T_Document::image_height, T_Page::Image_mode, IMAGE_MODE_ANIMATION, IMAGE_MODE_MODE5, IMAGE_MODE_RASTER, T_Document::image_width, T_Document::magnifier_factor, T_Document::magnifier_mode, Main, Menu_factor_X, Menu_Y_before_window, T_Page::Nb_layers, T_List_of_pages::Pages, T_Image::Pixels, Remap_general_lowlevel(), Remap_window_backgrounds(), Remap_zone_highlevel(), Screen_width, T_Document::separator_position, SEPARATOR_WIDTH, T_Page::Transparent_color, T_Document::visible_image, and T_Document::X_zoom.

Referenced by Button_Palette(), Reduce_palette(), Set_nice_menu_colors(), and Swap().

Swap()

void Swap	(	int	with_remap,
		short	block_1_start,
		short	block_2_start,
		short	block_size,
		T_Palette	palette,
		dword *	color_usage
	)

References T_Components::B, T_Components::G, T_Components::R, Remap_image_highlevel(), SWAP_BYTES, SWAP_DWORDS, and temp_palette.

Referenced by Button_Palette().

Set_nice_menu_colors()

void Set_nice_menu_colors	(	dword *	color_usage,
		int	not_picture
	)

Adds 4 menu colors in the current palette.

Parameters

color_usage	An up-to-date color usage table (byte[256]) (read only)
not_picture	0 if the caller is the palette screen, 1 if it's a preview in the file selector.

References T_Components::B, Best_color_nonexcluded(), Display_cursor(), Favorite_GUI_color(), T_Components::G, Hide_cursor, Main, T_Document::palette, T_Components::R, Remap_image_highlevel(), Remap_zone_highlevel(), Round_palette_component(), Screen_height, and Screen_width.

Referenced by Button_Palette().

Reduce_palette()

void Reduce_palette	(	short *	used_colors,
		int	nb_colors_asked,
		T_Palette	palette,
		dword *	color_usage
	)

References COUNT_X, COUNT_Y, Display_cursor(), Hide_cursor, MC_Black, MC_Light, Num2str, Print_in_window(), Remap_image_highlevel(), Round_div(), and Update_color_count().

Referenced by Button_Palette().

Set_palette_slider()

void Set_palette_slider	(	T_Scroller_button *	slider,
		word	nb_elements,
		word	position,
		char *	value,
		short	x_pos
	)

References Compute_slider_cursor_length(), MC_Black, MC_Light, T_Scroller_button::Nb_elements, NUMERIC_Y, T_Scroller_button::Position, Print_counter(), and Window_draw_slider().

Referenced by Display_sliders().

Display_sliders()

void Display_sliders	(	T_Scroller_button *	red_slider,
		T_Scroller_button *	green_slider,
		T_Scroller_button *	blue_slider,
		byte	block_is_selected,
		T_Components *	palette
	)

References T_Components::B, Color_count, Color_max, Encode_component(), Fore_color, Format_component(), T_Components::G, NUMERIC_B_X, NUMERIC_G_X, NUMERIC_R_X, Palette_view_is_RGB, T_Components::R, RGB_to_HSL(), and Set_palette_slider().

Referenced by Button_Palette().

Draw_all_palette_sliders()

void Draw_all_palette_sliders	(	T_Scroller_button *	red_slider,
		T_Scroller_button *	green_slider,
		T_Scroller_button *	blue_slider,
		T_Palette	palette,
		byte	start,
		byte	end
	)

References Color_max, Display_cursor(), Encode_component(), Format_component(), Hide_cursor, MC_Black, MC_Light, NUMERIC_B_X, NUMERIC_G_X, NUMERIC_R_X, NUMERIC_Y, Palette_view_is_RGB, T_Scroller_button::Position, Print_counter(), RGB_to_HSL(), and Window_draw_slider().

Referenced by Button_Palette().

Window_Histogram()

int Window_Histogram	(	unsigned char	block_start,
		unsigned char	block_end,
		dword *	color_usage
	)

References Close_window(), Display_cursor(), T_Special_button::Height, Hide_cursor, Key, KEY_ESC, KEY_RETURN, MC_Black, MC_Dark, MC_Light, Menu_factor_X, Mouse_K, Mouse_X, Num2str, Open_window(), T_Special_button::Pos_X, T_Special_button::Pos_Y, Print_in_window(), Quit_is_required, Update_window_area, Warning_message(), T_Special_button::Width, Window_click_in_rectangle(), Window_clicked_button(), Window_pos_X, Window_rectangle(), Window_set_normal_button(), and Window_set_special_button().

Referenced by Button_Palette().

Print_RGB_or_HSL()

void Print_RGB_or_HSL

(

byte

mode

)

References MC_Dark, MC_Light, mode, and Print_in_window().

Referenced by Button_Palette().

Tag_used_colors()

void Tag_used_colors	(	byte	color,
		dword	color_usage[]
	)

References MC_Light, MC_White, Update_window_area, Window_palette_button_list, and Window_rectangle().

Referenced by Button_Palette().

Button_Palette()

void Button_Palette

(

int

btn

)

Open the palette menu and handles everything inside it.

References Add_encoded(), T_Components::B, Back_color, Backup_layers(), backup_palette, T_Dropdown_button::Bottom_up, BUTTON_COLORPICKER, BUTTON_HELP, BUTTON_PALETTE, BUTTON_UNDO, Close_window(), Color_count, Color_max, Component_unit(), Compute_optimal_menu_colors(), Config, CONTEXT_PALETTE, Decode_component(), Display_cursor(), Display_grad_block_in_window(), Display_menu(), Display_sliders(), Draw_all_palette_sliders(), Draw_thingumajig(), Dropdown_activate(), T_Dropdown_button::Dropdown_width, End_of_modification(), T_Dropdown_button::First_item, Fore_color, Format_component(), T_Components::G, Get_clipboard_colors(), Get_color_behind_window(), T_Dropdown_button::Height, Hide_cursor, HSL_to_RGB(), Input_sticky_control, INPUT_TYPE_HEXA, Is_shortcut(), Key, KEY_b, KEY_BACKSPACE, KEY_c, KEY_d, KEY_DELETE, KEY_e, KEY_ESC, KEY_f, KEY_g, KEY_h, KEY_i, KEY_KP_MINUS, KEY_KP_PLUS, KEY_l, KEY_m, KEY_n, KEY_NONE, KEY_RETURN, KEY_s, KEY_t, KEY_u, KEY_w, KEY_x, L1, L2, L3, L4, LAYER_ALL, LAYER_NONE, LEFT_SIDE, Load_picture(), Main, MC_Black, MC_Dark, MC_Light, MC_White, Menu_factor_Y, Menu_Y_before_window, Mouse_K, Mouse_X, Mouse_Y, NULL, Num2str, T_Dropdown_choice::Number, NUMERIC_B_X, NUMERIC_BOX_H, NUMERIC_BOX_W, NUMERIC_BOX_X, NUMERIC_BOX_Y, NUMERIC_G_X, NUMERIC_R_X, NUMERIC_Y, Open_window(), T_Document::palette, Palette_edit_alter_channel(), Palette_edit_select_range(), Palette_edit_step(), Palette_edit_undo_redo(), Palette_view_is_RGB, Perceptual_lightness(), T_Dropdown_button::Pos_X, T_Dropdown_button::Pos_Y, T_Scroller_button::Position, Print_counter(), Print_in_window(), Print_RGB_or_HSL(), Quit_is_required, T_Components::R, Read_pixel, Readline(), Reduce_palette(), Remap_image_highlevel(), Remap_screen_after_menu_colors_change(), Reposition_palette(), Requester_window(), RGB_scale, RGB_to_HSL(), RIGHT_SIDE, T_Config::Safety_colors, Save_picture(), Screen_width, Select_button(), Set_blue(), Set_clipboard_colors(), Set_green(), Set_HSL(), Set_nice_menu_colors(), Set_palette(), Set_red(), SHORTCUT_COPY, SHORTCUT_PASTE, SPECIAL_NEXT_BACKCOLOR, SPECIAL_NEXT_FORECOLOR, SPECIAL_PREVIOUS_BACKCOLOR, SPECIAL_PREVIOUS_FORECOLOR, Spread_colors(), Swap(), SWAP_BYTES, SWAP_DWORDS, Tag_color_range(), Tag_used_colors(), temp_palette, Unselect_button(), Update_color_count(), Update_rect(), Update_window_area, Wait_click_in_palette(), Wait_end_of_click(), Window_attribute2, Window_clicked_button(), Window_display_frame_mono(), Window_draw_normal_bouton(), Window_draw_palette_bouton(), Window_draw_slider(), Window_dropdown_add_item(), Window_dropdown_clear_items(), Window_height, Window_help(), Window_Histogram(), Window_palette_button_list, Window_pos_Y, Window_rectangle(), Window_set_dropdown_button(), Window_set_normal_button(), Window_set_palette_button(), Window_set_repeatable_button(), Window_set_scroller_button(), and working_palette.

Referenced by Button_Select_forecolor().

Button_Secondary_palette()

void Button_Secondary_palette

(

int

btn

)

Open the secondary palette menu and handles it.

References BUTTON_HELP, BUTTON_PAL_LEFT, BUTTON_PAL_RIGHT, BUTTON_PALETTE, BUTTON_RELEASED, Change_palette_cells(), Close_window(), Compute_optimal_menu_colors(), Config, Display_cursor(), Display_menu(), Display_sprite_in_menu(), Draw_menu_button(), Exclude_color, Gamma, Hide_cursor, Is_shortcut(), Key, KEY_b, KEY_ESC, KEY_NONE, KEY_RETURN, KEY_s, KEY_w, KEY_x, Main, MC_Black, MC_Dark, MC_Light, MENU_SPRITE_VERTICAL_PALETTE_SCROLL, Menu_tag_colors(), NULL, Num2str, Open_window(), T_Document::palette, T_Config::Palette_cells_X, T_Config::Palette_cells_Y, T_Config::Palette_vertical, Pixel_in_window(), T_Scroller_button::Position, Print_in_window(), Quit_is_required, RGB_scale, Set_palette(), Set_palette_RGB_scale(), Shade_settings_menu(), SPECIAL_EXCLUDE_COLORS_MENU, Unselect_button(), Update_window_area, Window_attribute2, Window_clicked_button(), Window_display_frame(), Window_draw_slider(), Window_help(), Window_set_horizontal_scroller_button(), Window_set_normal_button(), and Window_set_scroller_button().

Set_clipboard_colors()

void Set_clipboard_colors	(	int	nb_colors,
		T_Components *	colors
	)

Put some colors in the clipboard.

Parameters

nb_colors	Number of colors to push
colors	First color of the input array

References Palette_clipboard, and Palette_clipboard_count.

Referenced by Button_Palette().

Get_clipboard_colors()

int Get_clipboard_colors	(	T_Palette	palette,
		byte	start_color
	)

Get some RGB colors from clipboard.

Parameters

palette	Target palette
start_color	Index of first color to replace

Returns

Number of colors retrieved (0-256)

References Palette_clipboard, and Palette_clipboard_count.

Referenced by Button_Palette().

Favorite_GUI_color()

const T_Components * Favorite_GUI_color

(

byte

color_index

)

Get the favorite color to use for GUI's black,dark,light or white.

References T_Components::B, T_Gui_skin::Color, T_Gui_skin::Default_palette, T_Components::G, Gfx, T_Components::R, and RGB_scale.

Referenced by Button_Constraint_menu(), Load_image(), and Set_nice_menu_colors().

Variable Documentation

Palette_view_is_RGB

byte Palette_view_is_RGB = 1

static

Referenced by Button_Palette(), Display_sliders(), and Draw_all_palette_sliders().

Gamma

float Gamma = 1.0

static

Referenced by Button_Secondary_palette(), Decode_component(), Encode_component(), Round_palette_component(), and Set_palette_Gamma().

COUNT_X

const int COUNT_X = 138

static

Referenced by Reduce_palette(), and Update_color_count().

COUNT_Y

const int COUNT_Y = 64

static

Referenced by Reduce_palette(), and Update_color_count().

RGB_scale

int RGB_scale = 256

Referenced by Button_Palette(), Button_Secondary_palette(), Favorite_GUI_color(), Get_palette_RGB_scale(), Round_palette_component(), and Set_palette_RGB_scale().

Color_count

int Color_count =256

Referenced by Button_Palette(), Component_unit(), and Display_sliders().

Color_max

int Color_max =255

Referenced by Button_Palette(), Component_unit(), Decode_component(), Display_sliders(), Draw_all_palette_sliders(), and Encode_component().

Color_halfstep

int Color_halfstep =0

Referenced by Component_unit().

backup_palette

T_Components* backup_palette

Referenced by Button_Palette(), Error_function(), Palette_edit_alter_channel(), Palette_edit_step(), and Palette_edit_undo_redo().

temp_palette

T_Components* temp_palette

Referenced by Button_Palette(), Error_function(), Palette_edit_alter_channel(), Palette_edit_undo_redo(), and Swap().

working_palette

T_Components* working_palette

Referenced by Button_Palette(), Palette_edit_alter_channel(), Palette_edit_step(), and Palette_edit_undo_redo().

Palette_undo_state

byte Palette_undo_state = 0

Referenced by Palette_edit_step(), and Palette_edit_undo_redo().

Palette_change_state

byte Palette_change_state = 0

Referenced by Palette_edit_alter_channel(), Palette_edit_select_range(), Palette_edit_step(), and Palette_edit_undo_redo().

NUMERIC_R_X

const int NUMERIC_R_X = 216

static

Referenced by Button_Palette(), Display_sliders(), and Draw_all_palette_sliders().

NUMERIC_G_X

const int NUMERIC_G_X = 243

static

Referenced by Button_Palette(), Display_sliders(), and Draw_all_palette_sliders().

NUMERIC_B_X

const int NUMERIC_B_X = 270

static

Referenced by Button_Palette(), Display_sliders(), and Draw_all_palette_sliders().

NUMERIC_Y

const int NUMERIC_Y = 183

static

Referenced by Button_Palette(), Draw_all_palette_sliders(), and Set_palette_slider().

NUMERIC_BOX_X

const int NUMERIC_BOX_X = 215

static

Referenced by Button_Palette().

NUMERIC_BOX_Y

const int NUMERIC_BOX_Y = 181

static

Referenced by Button_Palette().

NUMERIC_BOX_W

const int NUMERIC_BOX_W = 81

static

Referenced by Button_Palette().

NUMERIC_BOX_H

const int NUMERIC_BOX_H = 12

static

Referenced by Button_Palette().

Palette_clipboard_count

int Palette_clipboard_count =0

Referenced by Get_clipboard_colors(), and Set_clipboard_colors().

Palette_clipboard

T_Palette Palette_clipboard

Referenced by Get_clipboard_colors(), and Set_clipboard_colors().