widget_edit.c File Reference

#include <SDL3/SDL.h>
#include "colors.h"
#include "graphics.h"
#include "gui_id.h"
#include "gui_tilespec.h"
#include "mapview.h"
#include "themespec.h"
#include "utf8string.h"
#include "widget.h"
#include "widget_p.h"

Go to the source code of this file.

Data Structures
struct	utf8_char
struct	text_edit

Functions
static size_t	chainlen (const struct utf8_char *chain)
static void	del_chain (struct utf8_char *chain)
static struct utf8_char *	text2chain (const char *text_in)
static char *	chain2text (const struct utf8_char *in_chain, size_t len, size_t *size)
static int	redraw_edit_chain (struct text_edit *edt)
static int	redraw_edit (struct widget *edit_widget)
struct widget *	create_edit (SDL_Surface *background, struct gui_layer *pdest, utf8_str *pstr, int length, Uint32 flags)
int	draw_edit (struct widget *pedit, Sint16 start_x, Sint16 start_y)
static Uint16	edit_key_down (SDL_KeyboardEvent *key, void *data)
static Uint16	edit_textinput (const char *text, void *data)
static Uint16	edit_mouse_button_down (SDL_MouseButtonEvent *button_event, void *data)
enum edit_return_codes	edit_field (struct widget *edit_widget)

Variables
static int(*	baseclass_redraw )(struct widget *pwidget)

Function Documentation

chain2text()

static char * chain2text ( const struct utf8_char *  in_chain, size_t  len, size_t *  size  )

static

Convert utf8_char structure to chars WARNING: Do not free utf8_char structure but allocates new char array.

Definition at line 302 of file widget_edit.c.

chainlen()

static size_t chainlen ( const struct utf8_char *  chain )

static

Return length of utf8_char chain. WARRNING: if struct utf8_char has 1 member and utf8_char->chr == 0 then this function return 1 ( not 0 like in strlen )

Definition at line 213 of file widget_edit.c.

create_edit()

struct widget * create_edit	(	SDL_Surface *	background,
		struct gui_layer *	pdest,
		utf8_str *	pstr,
		int	length,
		Uint32	flags
	)

Create ( malloc ) Edit Widget structure.

Edit Theme graphic is taken from current_theme->Edit surface; Text is taken from 'pstr'.

'length' parameter determinate width of Edit rect.

This function determinate future size of Edit ( width, height ) and save this in: pwidget->size rectangle ( SDL_Rect )

function return pointer to allocated Edit Widget.

Definition at line 346 of file widget_edit.c.

del_chain()

static void del_chain ( struct utf8_char *  chain )

static

Delete utf8_char structure.

Definition at line 233 of file widget_edit.c.

draw_edit()

int draw_edit	(	struct widget *	pedit,
		Sint16	start_x,
		Sint16	start_y
	)

set new x, y position and redraw edit.

Definition at line 388 of file widget_edit.c.

edit_field()

enum edit_return_codes edit_field

(

struct widget *

edit_widget

)

Handle active edit. Returns what should happen to the edit next.

Definition at line 677 of file widget_edit.c.

edit_key_down()

static Uint16 edit_key_down ( SDL_KeyboardEvent *  key, void *  data  )

static

This functions are pure madness :) Create Edit Field surface ( with Text) and blit them to Main.screen, on position 'edit_widget->size.x , edit_widget->size.y'

Main role of this functions are been text input to GUI. This code allow you to add, del unichar from unistring.

Graphic is taken from 'edit_widget->theme' OldText is taken from 'edit_widget->string_utf8'

NewText is returned to 'edit_widget->string_utf8' ( after free OldText )

if flag 'FW_DRAW_THEME_TRANSPARENT' is set theme will be blit transparent ( Alpha = 128 )

NOTE: This functions can return NULL in 'edit_widget->string_utf8->text' but never free 'edit_widget->string_utf8' struct.

Definition at line 419 of file widget_edit.c.

edit_mouse_button_down()

static Uint16 edit_mouse_button_down ( SDL_MouseButtonEvent *  button_event, void *  data  )

static

Handle mouse down events on edit widget.

Definition at line 655 of file widget_edit.c.

edit_textinput()

static Uint16 edit_textinput ( const char *  text, void *  data  )

static

Handle textinput strings coming to the edit widget

Definition at line 585 of file widget_edit.c.

redraw_edit()

static int redraw_edit ( struct widget *  edit_widget )

static

Create Edit Field surface ( with Text) and blit them to Main.screen, on position 'edit_widget->size.x , edit_widget->size.y'

Graphic is taken from 'edit_widget->theme' Text is taken from 'edit_widget->string_utf8'

if flag 'FW_DRAW_THEME_TRANSPARENT' is set theme will be blit transparent ( Alpha = 128 )

function return height of created surfaces or (-1) if theme surface can't be created.

Definition at line 138 of file widget_edit.c.

redraw_edit_chain()

static int redraw_edit_chain ( struct text_edit *  edt )

static

Draw the text being edited.

Definition at line 62 of file widget_edit.c.

text2chain()

static struct utf8_char * text2chain ( const char *  text_in )

static

Convert utf8 string to utf8_char structure. Memory allocation -> after all use need call del_chain(...) !

Definition at line 259 of file widget_edit.c.

Variable Documentation

baseclass_redraw

int(* baseclass_redraw) (struct widget *pwidget) ( struct widget *  pwidget )

static

Definition at line 57 of file widget_edit.c.