#ifndef EL__TERMINAL_DRAW_H #define EL__TERMINAL_DRAW_H struct color_pair; struct box; struct terminal; /* All attributes should fit inside an unsigned char. */ /* XXX: The bold mask is used as part of the color encoding. */ enum screen_char_attr { SCREEN_ATTR_UNSEARCHABLE = 0x01, SCREEN_ATTR_BOLD = 0x08, SCREEN_ATTR_ITALIC = 0x10, SCREEN_ATTR_UNDERLINE = 0x20, SCREEN_ATTR_STANDOUT = 0x40, SCREEN_ATTR_FRAME = 0x80, }; /* One position in the terminal screen's image. */ struct screen_char { /* Contains either character value or frame data. */ unsigned char data; /* Attributes are screen_char_attr bits. */ unsigned char attr; /* The encoded fore- and background color. */ #if defined(CONFIG_88_COLORS) || defined(CONFIG_256_COLORS) unsigned char color[2]; #else unsigned char color[1]; #endif }; #define copy_screen_chars(to, from, amount) \ do { memcpy(to, from, (amount) * sizeof(struct screen_char)); } while (0) /* Linux frame symbols table (it's magically converted to other terminals when * needed). */ /* In the screen image, they have attribute SCREEN_ATTR_FRAME; you should drop them * to the image using draw_border_char(). */ /* TODO: When we'll support internal Unicode, this should be changed to some * Unicode sequences. --pasky */ /* Codes extracted from twin-0.4.6 GPL project, a Textmode WINdow environment, * by Massimiliano Ghilardi http://linuz.sns.it/~max/ */ /* Not yet used #define T_UTF_16_BOX_DRAWINGS_LIGHT_VERTICAL 0x2502 #define T_UTF_16_BOX_DRAWINGS_LIGHT_VERTICAL_AND_LEFT 0x2524 #define T_UTF_16_BOX_DRAWINGS_VERTICAL_SINGLE_AND_LEFT_DOUBLE 0x2561 #define T_UTF_16_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_LEFT_SINGLE 0x2562 #define T_UTF_16_BOX_DRAWINGS_DOWN_DOUBLE_AND_LEFT_SINGLE 0x2556 #define T_UTF_16_BOX_DRAWINGS_DOWN_SINGLE_AND_LEFT_DOUBLE 0x2555 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_LEFT 0x2563 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_VERTICAL 0x2551 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_DOWN_AND_LEFT 0x2557 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_UP_AND_LEFT 0x255D #define T_UTF_16_BOX_DRAWINGS_UP_DOUBLE_AND_LEFT_SINGLE 0x255C #define T_UTF_16_BOX_DRAWINGS_UP_SINGLE_AND_LEFT_DOUBLE 0x255B #define T_UTF_16_BOX_DRAWINGS_LIGHT_DOWN_AND_LEFT 0x2510 #define T_UTF_16_BOX_DRAWINGS_LIGHT_UP_AND_RIGHT 0x2514 #define T_UTF_16_BOX_DRAWINGS_LIGHT_UP_AND_HORIZONTAL 0x2534 #define T_UTF_16_BOX_DRAWINGS_LIGHT_DOWN_AND_HORIZONTAL 0x252C #define T_UTF_16_BOX_DRAWINGS_LIGHT_VERTICAL_AND_RIGHT 0x251C #define T_UTF_16_BOX_DRAWINGS_LIGHT_HORIZONTAL 0x2500 #define T_UTF_16_BOX_DRAWINGS_LIGHT_VERTICAL_AND_HORIZONTAL 0x253C #define T_UTF_16_BOX_DRAWINGS_VERTICAL_SINGLE_AND_RIGHT_DOUBLE 0x255E #define T_UTF_16_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_RIGHT_SINGLE 0x255F #define T_UTF_16_BOX_DRAWINGS_DOUBLE_UP_AND_RIGHT 0x255A #define T_UTF_16_BOX_DRAWINGS_DOUBLE_DOWN_AND_RIGHT 0x2554 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_UP_AND_HORIZONTAL 0x2569 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_DOWN_AND_HORIZONTAL 0x2566 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_RIGHT 0x2560 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_HORIZONTAL 0x2550 #define T_UTF_16_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_HORIZONTAL 0x256C #define T_UTF_16_BOX_DRAWINGS_UP_SINGLE_AND_HORIZONTAL_DOUBLE 0x2567 #define T_UTF_16_BOX_DRAWINGS_UP_DOUBLE_AND_HORIZONTAL_SINGLE 0x2568 #define T_UTF_16_BOX_DRAWINGS_DOWN_SINGLE_AND_HORIZONTAL_DOUBLE 0x2564 #define T_UTF_16_BOX_DRAWINGS_DOWN_DOUBLE_AND_HORIZONTAL_SINGLE 0x2565 #define T_UTF_16_BOX_DRAWINGS_UP_DOUBLE_AND_RIGHT_SINGLE 0x2559 #define T_UTF_16_BOX_DRAWINGS_UP_SINGLE_AND_RIGHT_DOUBLE 0x2558 #define T_UTF_16_BOX_DRAWINGS_DOWN_SINGLE_AND_RIGHT_DOUBLE 0x2552 #define T_UTF_16_BOX_DRAWINGS_DOWN_DOUBLE_AND_RIGHT_SINGLE 0x2553 #define T_UTF_16_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_HORIZONTAL_SINGLE 0x256B #define T_UTF_16_BOX_DRAWINGS_VERTICAL_SINGLE_AND_HORIZONTAL_DOUBLE 0x256A #define T_UTF_16_BOX_DRAWINGS_LIGHT_UP_AND_LEFT 0x2518 #define T_UTF_16_BOX_DRAWINGS_LIGHT_DOWN_AND_RIGHT 0x250C */ /* CP437 is used by default */ #define T_CP437_BOX_DRAWINGS_LIGHT_VERTICAL 0x00B3 #define T_CP437_BOX_DRAWINGS_LIGHT_VERTICAL_AND_LEFT 0x00B4 #define T_CP437_BOX_DRAWINGS_VERTICAL_SINGLE_AND_LEFT_DOUBLE 0x00B5 #define T_CP437_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_LEFT_SINGLE 0x00B6 #define T_CP437_BOX_DRAWINGS_DOWN_DOUBLE_AND_LEFT_SINGLE 0x00B7 #define T_CP437_BOX_DRAWINGS_DOWN_SINGLE_AND_LEFT_DOUBLE 0x00B8 #define T_CP437_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_LEFT 0x00B9 #define T_CP437_BOX_DRAWINGS_DOUBLE_VERTICAL 0x00BA #define T_CP437_BOX_DRAWINGS_DOUBLE_DOWN_AND_LEFT 0x00BB #define T_CP437_BOX_DRAWINGS_DOUBLE_UP_AND_LEFT 0x00BC #define T_CP437_BOX_DRAWINGS_UP_DOUBLE_AND_LEFT_SINGLE 0x00BD #define T_CP437_BOX_DRAWINGS_UP_SINGLE_AND_LEFT_DOUBLE 0x00BE #define T_CP437_BOX_DRAWINGS_LIGHT_DOWN_AND_LEFT 0x00BF #define T_CP437_BOX_DRAWINGS_LIGHT_UP_AND_RIGHT 0x00C0 #define T_CP437_BOX_DRAWINGS_LIGHT_UP_AND_HORIZONTAL 0x00C1 #define T_CP437_BOX_DRAWINGS_LIGHT_DOWN_AND_HORIZONTAL 0x00C2 #define T_CP437_BOX_DRAWINGS_LIGHT_VERTICAL_AND_RIGHT 0x00C3 #define T_CP437_BOX_DRAWINGS_LIGHT_HORIZONTAL 0x00C4 #define T_CP437_BOX_DRAWINGS_LIGHT_VERTICAL_AND_HORIZONTAL 0x00C5 #define T_CP437_BOX_DRAWINGS_VERTICAL_SINGLE_AND_RIGHT_DOUBLE 0x00C6 #define T_CP437_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_RIGHT_SINGLE 0x00C7 #define T_CP437_BOX_DRAWINGS_DOUBLE_UP_AND_RIGHT 0x00C8 #define T_CP437_BOX_DRAWINGS_DOUBLE_DOWN_AND_RIGHT 0x00C9 #define T_CP437_BOX_DRAWINGS_DOUBLE_UP_AND_HORIZONTAL 0x00CA #define T_CP437_BOX_DRAWINGS_DOUBLE_DOWN_AND_HORIZONTAL 0x00CB #define T_CP437_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_RIGHT 0x00CC #define T_CP437_BOX_DRAWINGS_DOUBLE_HORIZONTAL 0x00CD #define T_CP437_BOX_DRAWINGS_DOUBLE_VERTICAL_AND_HORIZONTAL 0x00CE #define T_CP437_BOX_DRAWINGS_UP_SINGLE_AND_HORIZONTAL_DOUBLE 0x00CF #define T_CP437_BOX_DRAWINGS_UP_DOUBLE_AND_HORIZONTAL_SINGLE 0x00D0 #define T_CP437_BOX_DRAWINGS_DOWN_SINGLE_AND_HORIZONTAL_DOUBLE 0x00D1 #define T_CP437_BOX_DRAWINGS_DOWN_DOUBLE_AND_HORIZONTAL_SINGLE 0x00D2 #define T_CP437_BOX_DRAWINGS_UP_DOUBLE_AND_RIGHT_SINGLE 0x00D3 #define T_CP437_BOX_DRAWINGS_UP_SINGLE_AND_RIGHT_DOUBLE 0x00D4 #define T_CP437_BOX_DRAWINGS_DOWN_SINGLE_AND_RIGHT_DOUBLE 0x00D5 #define T_CP437_BOX_DRAWINGS_DOWN_DOUBLE_AND_RIGHT_SINGLE 0x00D6 #define T_CP437_BOX_DRAWINGS_VERTICAL_DOUBLE_AND_HORIZONTAL_SINGLE 0x00D7 #define T_CP437_BOX_DRAWINGS_VERTICAL_SINGLE_AND_HORIZONTAL_DOUBLE 0x00D8 #define T_CP437_BOX_DRAWINGS_LIGHT_UP_AND_LEFT 0x00D9 #define T_CP437_BOX_DRAWINGS_LIGHT_DOWN_AND_RIGHT 0x00DA #define BD_LIGHT(XXX) T_CP437_BOX_DRAWINGS_LIGHT_##XXX #define BD_DOUBLE(XXX) T_CP437_BOX_DRAWINGS_DOUBLE_##XXX #define BD_MIXED(XXX) T_CP437_BOX_DRAWINGS_##XXX enum border_char { BORDER_NONE = 0x0000, /* single-lined */ BORDER_SULCORNER = BD_LIGHT(DOWN_AND_RIGHT), BORDER_SURCORNER = BD_LIGHT(DOWN_AND_LEFT), BORDER_SDLCORNER = BD_LIGHT(UP_AND_RIGHT), BORDER_SDRCORNER = BD_LIGHT(UP_AND_LEFT), BORDER_SLTEE = BD_LIGHT(VERTICAL_AND_LEFT), /* => the tee points to the left => -| */ BORDER_SRTEE = BD_LIGHT(VERTICAL_AND_RIGHT), BORDER_SDTEE = BD_LIGHT(DOWN_AND_HORIZONTAL), BORDER_SUTEE = BD_LIGHT(UP_AND_HORIZONTAL), BORDER_SVLINE = BD_LIGHT(VERTICAL), BORDER_SHLINE = BD_LIGHT(HORIZONTAL), BORDER_SCROSS = BD_LIGHT(VERTICAL_AND_HORIZONTAL), /* + */ /* double-lined */ BORDER_DULCORNER = BD_DOUBLE(DOWN_AND_RIGHT), BORDER_DURCORNER = BD_DOUBLE(DOWN_AND_LEFT), BORDER_DDLCORNER = BD_DOUBLE(UP_AND_RIGHT), BORDER_DDRCORNER = BD_DOUBLE(UP_AND_LEFT), BORDER_DLTEE = BD_DOUBLE(VERTICAL_AND_LEFT), BORDER_DRTEE = BD_DOUBLE(VERTICAL_AND_RIGHT), BORDER_DDTEE = BD_DOUBLE(DOWN_AND_HORIZONTAL), BORDER_DUTEE = BD_DOUBLE(UP_AND_HORIZONTAL), BORDER_DVLINE = BD_DOUBLE(VERTICAL), BORDER_DHLINE = BD_DOUBLE(HORIZONTAL), BORDER_DCROSS = BD_DOUBLE(VERTICAL_AND_HORIZONTAL), /* Mixed single then double */ BORDER_SDULCORNER = BD_MIXED(DOWN_SINGLE_AND_RIGHT_DOUBLE), BORDER_SDURCORNER = BD_MIXED(DOWN_SINGLE_AND_LEFT_DOUBLE), BORDER_SDDLCORNER = BD_MIXED(UP_SINGLE_AND_RIGHT_DOUBLE), BORDER_SDDRCORNER = BD_MIXED(UP_SINGLE_AND_LEFT_DOUBLE), BORDER_SDLTEE = BD_MIXED(VERTICAL_SINGLE_AND_LEFT_DOUBLE), BORDER_SDRTEE = BD_MIXED(VERTICAL_SINGLE_AND_RIGHT_DOUBLE), BORDER_SDDTEE = BD_MIXED(DOWN_SINGLE_AND_HORIZONTAL_DOUBLE), BORDER_SDUTEE = BD_MIXED(UP_SINGLE_AND_HORIZONTAL_DOUBLE), BORDER_SDCROSS = BD_MIXED(VERTICAL_SINGLE_AND_HORIZONTAL_DOUBLE), /* Mixed double then single */ BORDER_DSULCORNER = BD_MIXED(DOWN_DOUBLE_AND_RIGHT_SINGLE), BORDER_DSURCORNER = BD_MIXED(DOWN_DOUBLE_AND_LEFT_SINGLE), BORDER_DSDLCORNER = BD_MIXED(UP_DOUBLE_AND_RIGHT_SINGLE), BORDER_DSDRCORNER = BD_MIXED(UP_DOUBLE_AND_LEFT_SINGLE), BORDER_DSLTEE = BD_MIXED(VERTICAL_DOUBLE_AND_LEFT_SINGLE), BORDER_DSRTEE = BD_MIXED(VERTICAL_DOUBLE_AND_RIGHT_SINGLE), BORDER_DSDTEE = BD_MIXED(DOWN_DOUBLE_AND_HORIZONTAL_SINGLE), BORDER_DSUTEE = BD_MIXED(UP_DOUBLE_AND_HORIZONTAL_SINGLE), BORDER_DSCROSS = BD_MIXED(VERTICAL_DOUBLE_AND_HORIZONTAL_SINGLE), }; /* 0 -> 1 <- 2 v 3 ^ */ enum border_cross_direction { BORDER_X_RIGHT = 0, BORDER_X_LEFT, BORDER_X_DOWN, BORDER_X_UP }; /* Extracts a char from the screen. */ struct screen_char *get_char(struct terminal *, int x, int y); /* Sets the color of a screen position. */ void draw_char_color(struct terminal *term, int x, int y, struct color_pair *color); /* Sets the data of a screen position. */ void draw_char_data(struct terminal *term, int x, int y, unsigned char data); /* Sets the data to @border and of a screen position. */ void draw_border_char(struct terminal *term, int x, int y, enum border_char border, struct color_pair *color); /* Sets the cross position of two borders. */ void draw_border_cross(struct terminal *, int x, int y, enum border_cross_direction, struct color_pair *color); /* Draws a char. */ void draw_char(struct terminal *term, int x, int y, unsigned char data, enum screen_char_attr attr, struct color_pair *color); /* Draws area defined by @box using the same colors and attributes. */ void draw_box(struct terminal *term, struct box *box, unsigned char data, enum screen_char_attr attr, struct color_pair *color); /* Draws a shadow of @width and @height with color @color around @box. */ void draw_shadow(struct terminal *term, struct box *box, struct color_pair *color, int width, int height); /* Draw borders. */ void draw_border(struct terminal *term, struct box *box, struct color_pair *color, int width); /* Draws @length chars from @text. */ void draw_text(struct terminal *term, int x, int y, unsigned char *text, int length, enum screen_char_attr attr, struct color_pair *color); /* Draws @length chars from @line on the screen. */ /* Used by viewer to copy over a document. */ void draw_line(struct terminal *term, int x, int y, int length, struct screen_char *line); /* Updates the terminals cursor position. When @blockable is set the * block_cursor terminal option decides whether the cursor should be put at the * bottom right corner of the screen. */ void set_cursor(struct terminal *term, int x, int y, int blockable); /* Blanks the screen. */ void clear_terminal(struct terminal *); #endif