#include <algorithm>
#include "MEM_guardedalloc.h"
#include "BLF_api.hh"
#include "BLI_listbase.h"
#include "BLI_rect.h"
#include "BLI_string.h"
#include "BLI_string_utf8.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_text_types.h"
#include "BKE_context.hh"
#include "BKE_screen.hh"
#include "BKE_text.h"
#include "BKE_text_suggestions.h"
#include "ED_text.hh"
#include "GPU_immediate.hh"
#include "GPU_state.hh"
#include "UI_interface.hh"
#include "UI_resources.hh"
#include "text_format.hh"
#include "text_intern.hh"
#include "WM_api.hh"
#include "WM_types.hh"

Classes
struct	TextDrawContext
struct	DrawCache

Functions
Text Run-Time Access
int	ED_space_text_visible_lines_get (const SpaceText *st)
Text Font Drawing
static void	space_text_draw_context_init (const SpaceText st, TextDrawContext tdc)
static void	text_font_begin (const TextDrawContext *tdc)
static void	text_font_end (const TextDrawContext *)
static int	text_font_draw (const TextDrawContext tdc, int x, int y, const char str)
static int	text_font_draw_character (const TextDrawContext *tdc, int x, int y, char c)
static int	text_font_draw_character_utf8 (const TextDrawContext tdc, int x, int y, const char c, const int c_len)
static void	format_draw_color (const TextDrawContext *tdc, char formatchar)
Cache Utilities
static void	space_text_drawcache_init (SpaceText *st)
static void	space_text_update_drawcache (SpaceText st, const ARegion region)
void	space_text_drawcache_tag_update (SpaceText *st, const bool full)
void	space_text_free_caches (SpaceText *st)
Word-Wrap Utilities
static int	space_text_get_visible_lines_no (const SpaceText *st, int lineno)
int	space_text_get_visible_lines (const SpaceText st, const ARegion region, const char *str)
int	space_text_get_span_wrap (const SpaceText st, const ARegion region, const TextLine from, const TextLine to)
int	space_text_get_total_lines (SpaceText st, const ARegion region)
Draw Scroll-Bar
static void	calc_text_rcts (SpaceText st, ARegion region, rcti r_scroll, rcti r_back)
static void	draw_textscroll (const SpaceText st, const rcti scroll, const rcti *back)
Draw Suggestion List
static void	draw_suggestion_list (const SpaceText st, const TextDrawContext tdc, ARegion *region)
Draw Cursor
static void	draw_text_decoration (SpaceText st, ARegion region)
Draw Matching Brackets
static void	draw_brackets (const SpaceText st, const TextDrawContext tdc, ARegion *region)
Main Region Drawing
void	draw_text_main (SpaceText st, ARegion region)
Update & Coordinate Conversion
void	space_text_update_character_width (SpaceText *st)
bool	ED_text_activate_in_screen (bContext C, Text text)
void	ED_space_text_scroll_to_cursor (SpaceText st, ARegion region, const bool center)
void	space_text_scroll_to_cursor_with_area (SpaceText st, ScrArea area, const bool center)
void	space_text_update_cursor_moved (bContext *C)
bool	ED_space_text_region_location_from_cursor (const SpaceText st, const ARegion region, const int cursor_co[2], int r_pixel_co[2])

Draw Text
Notes on Word-Wrap All word-wrap functions follow the algorithm below to maintain consistency: line: The line to wrap (tabs converted to spaces) view_width: The maximum number of characters displayable in the region This equals region_width/font_width for the region wrap_chars: Characters that allow wrapping. This equals [" ", "\t", "-"] def wrap(line, view_width, wrap_chars): draw_start = 0 draw_end = view_width pos = 0 for c in line: if pos-draw_start >= view_width: print line[draw_start:draw_end] draw_start = draw_end draw_end += view_width elif c in wrap_chars: draw_end = pos+1 pos += 1 print line[draw_start:] \encode \{ / int space_text_wrap_width(const SpaceText st, const ARegion region) { int winx = region->winx - TXT_SCROLL_WIDTH; int x, max; x = TXT_BODY_LEFT(st); max = st->runtime->cwidth_px ? (winx - x) / st->runtime->cwidth_px : 0; return max > 8 ? max : 8; } void space_text_wrap_offset( const SpaceText st, const ARegion region, TextLine linein, int cursin, int offl, int offc) { Text text; TextLine linep; int i, j, start, end, max; bool chop; char ch; offl = offc = 0; if (!st->text) { return; } if (!st->wordwrap) { return; } text = st->text; / Move pointer to first visible line (top). wrap float wrap(float value, float max, float min) Definition node_math.h:103 space_text_wrap_width int space_text_wrap_width(const SpaceText st, const ARegion region) space_text_wrap_offset void space_text_wrap_offset(const SpaceText st, const ARegion region, TextLine linein, int cursin, int offl, int offc) TXT_BODY_LEFT #define TXT_BODY_LEFT(st) Definition* text_intern.hh:46
	linep = static_cast<TextLine *>(text->lines.first)
	i = st->top
	max = space_text_wrap_width(st, region)
	cursin = BLI_str_utf8_offset_to_column(linein->line, linein->len, cursin)
	while (i > 0 &&linep)
	while (linep)
void	space_text_wrap_offset_in_line (const SpaceText st, const ARegion region, TextLine linein, int cursin, int offl, int *offc)
int	space_text_get_char_pos (const SpaceText st, const char line, int cur)
static const char *	txt_utf8_forward_columns (const char str, int columns, int padding)
static int	space_text_draw_wrapped (const SpaceText st, const TextDrawContext tdc, const char str, int x, int y, int w, const char format, int skip)
static void	space_text_draw (const SpaceText st, const TextDrawContext tdc, char str, int cshift, int maxwidth, int x, int y, const char format)