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gui_osd.c
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gui_osd.c
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/*
* See Licensing and Copyright notice in naev.h
*/
#include "gui_osd.h"
#include "naev.h"
#include <stdlib.h>
#include "nstring.h"
#include "log.h"
#include "opengl.h"
#include "font.h"
#include "array.h"
/**
* @brief On Screen Display message element.
*/
typedef struct OSDmsg_s {
char **chunks; /**< Chunks of the message. */
int nchunks; /**< Number of chunks message is chopped into. */
} OSDmsg_s;
/**
* @brief On Screen Display element.
*/
typedef struct OSD_s {
unsigned int id; /**< OSD id. */
int priority; /**< Priority level. */
char *title; /**< Title of the OSD. */
char **msg; /**< Stored messages. */
OSDmsg_s *items; /**< Items on the list. */
int nitems; /**< Number of items on the list. */
int active; /**< Active item. */
} OSD_t;
/*
* OSD linked list.
*/
static unsigned int osd_idgen = 0; /**< ID generator for OSD. */
static OSD_t *osd_list = NULL; /**< Linked list for OSD. */
/*
* Dimensions.
*/
static int osd_x = 0;
static int osd_y = 0;
static int osd_w = 0;
static int osd_h = 0;
static int osd_lines = 0;
static int osd_rh = 0;
static int osd_tabLen = 0;
static int osd_hyphenLen = 0;
/*
* Prototypes.
*/
static OSD_t *osd_get( unsigned int osd );
static int osd_free( OSD_t *osd );
static void osd_calcDimensions (void);
/* Sort. */
static int osd_sortCompare( const void * arg1, const void * arg2 );
static void osd_sort (void);
static int osd_sortCompare( const void *arg1, const void *arg2 )
{
const OSD_t *osd1, *osd2;
int ret, i, m;
osd1 = (OSD_t*)arg1;
osd2 = (OSD_t*)arg2;
/* Compare priority. */
if (osd1->priority > osd2->priority)
return +1;
else if (osd1->priority < osd2->priority)
return -1;
/* Compare name. */
ret = strcmp( osd1->title, osd2->title );
if (ret != 0)
return ret;
/* Compare items. */
m = MIN(osd1->nitems, osd2->nitems);
for(i=0; i<m; i++) {
ret = strcmp( osd1->msg[i], osd2->msg[i] );
if (ret != 0)
return ret;
}
/* Compare on length. */
if (osd1->nitems > osd2->nitems)
return +1;
if (osd1->nitems < osd2->nitems)
return -1;
/* Compare ID. */
if (osd1->id > osd2->id)
return +1;
else if (osd1->id < osd2->id)
return -1;
return 0;
}
/**
* @brief Sorts the OSD list.
*/
static void osd_sort (void)
{
qsort( osd_list, array_size(osd_list), sizeof(OSD_t), osd_sortCompare );
}
/**
* @brief Creates an on-screen display.
*
* @param title Title of the display.
* @param nitems Number of items in the display.
* @param items Items in the display.
* @return ID of newly created OSD.
*/
unsigned int osd_create( const char *title, int nitems, const char **items, int priority )
{
int i, j, n, m, l, s, w, t, id;
OSD_t *osd;
/* Create. */
if (osd_list == NULL)
osd_list = array_create( OSD_t );
osd = &array_grow( &osd_list );
memset( osd, 0, sizeof(OSD_t) );
osd->id = ++osd_idgen;
osd->active = 0;
/* Copy text. */
osd->title = strdup(title);
osd->priority = priority;
osd->msg = malloc( sizeof(char*) * nitems );
osd->items = malloc( sizeof(OSDmsg_s) * nitems );
osd->nitems = nitems;
for (i=0; i<osd->nitems; i++) {
osd->msg[i] = strdup( items[i] );
l = strlen(osd->msg[i]); /* Message length. */
n = 0; /* Text position. */
j = 0; /* Lines. */
m = 0; /* Allocated Memory. */
t = 0; /* Tabbed? */
osd->items[i].chunks = NULL;
w = osd_w-osd_hyphenLen;
while (n < l) {
/* Test if tabbed. */
if (j==0) {
if (items[i][n] == '\t') {
t = 1;
w = osd_w - osd_tabLen;
}
else {
t = 0;
w = osd_w - osd_hyphenLen;
}
}
/* Get text size. */
s = gl_printWidthForText( &gl_smallFont, &items[i][n], w );
if ((j==0) && (t==1))
w -= osd_hyphenLen;
if (j+1 > m) {
if (m==0)
m = 32;
else
m *= 2;
osd->items[i].chunks = realloc( osd->items[i].chunks, m * sizeof(char*));
}
/* Copy text over. */
if (j==0) {
if (t==1) {
osd->items[i].chunks[j] = malloc(s+4);
nsnprintf( osd->items[i].chunks[j], s+4, " %s", &items[i][n+1] );
}
else {
osd->items[i].chunks[j] = malloc(s+3);
nsnprintf( osd->items[i].chunks[j], s+3, "- %s", &items[i][n] );
}
}
else if (t==1) {
osd->items[i].chunks[j] = malloc(s+4);
nsnprintf( osd->items[i].chunks[j], s+4, " %s", &items[i][n] );
}
else {
osd->items[i].chunks[j] = malloc(s+1);
nsnprintf( osd->items[i].chunks[j], s+1, "%s", &items[i][n] );
}
/* Go to next line. */
n += s + 1;
j++;
}
osd->items[i].nchunks = j;
}
/* Sort them buggers. */
id = osd->id; /* WE MUST SAVE THE ID BEFORE WE SORT. Or we get stuck with an invalid osd pointer. */
osd_sort();
/* Recalculate dimensions. */
osd_calcDimensions();
return id;
}
/**
* @brief Gets an OSD by ID.
*
* @param osd ID of the OSD to get.
*/
static OSD_t *osd_get( unsigned int osd )
{
int i;
OSD_t *ll;
for (i=0; i<array_size(osd_list); i++) {
ll = &osd_list[i];
if (ll->id == osd)
return ll;
}
WARN("OSD '%d' not found.", osd);
return NULL;
}
/**
* @brief Frees an OSD struct.
*/
static int osd_free( OSD_t *osd )
{
int i, j;
if (osd->title != NULL)
free(osd->title);
for(i=0; i<osd->nitems; i++) {
free( osd->msg[i] );
for (j=0; j<osd->items[i].nchunks; j++)
free(osd->items[i].chunks[j]);
free(osd->items[i].chunks);
}
free(osd->msg);
free(osd->items);
return 0;
}
/**
* @brief Destroys an OSD.
*
* @param osd ID of the OSD to destroy.
*/
int osd_destroy( unsigned int osd )
{
int i;
OSD_t *ll;
for (i=0; i<array_size( osd_list ); i++) {
ll = &osd_list[i];
if (ll->id != osd)
continue;
/* Clean up. */
osd_free( &osd_list[i] );
/* Remove. */
array_erase( &osd_list, &osd_list[i], &osd_list[i+1] );
/* Recalculate dimensions. */
osd_calcDimensions();
/* Remove the OSD, if empty. */
if (array_size(osd_list) == 0)
osd_exit();
/* Done here. */
return 0;
}
WARN("OSD '%u' not found to destroy.", osd );
return 0;
}
/**
* @brief Makes an OSD message active.
*
* @param osd OSD to change active message.
* @param msg Message to make active in OSD.
* @return 0 on success.
*/
int osd_active( unsigned int osd, int msg )
{
OSD_t *o;
o = osd_get(osd);
if (o == NULL)
return -1;
if ((msg < 0) || (msg >= o->nitems)) {
WARN("OSD '%s' only has %d items (requested %d)", o->title, o->nitems, msg );
return -1;
}
o->active = msg;
return 0;
}
/**
* @brief Gets the active OSD MESSAGE>
*
* @param osd OSD to get active message.
* @return The active OSD message or -1 on error.
*/
int osd_getActive( unsigned int osd )
{
OSD_t *o;
o = osd_get(osd);
if (o == NULL)
return -1;
return o->active;
}
/**
* @brief Sets up the OSD window.
*
* @param x X position to render at.
* @param y Y position to render at.
* @param w Width to render.
* @param h Height to render.
*/
int osd_setup( int x, int y, int w, int h )
{
/* Set offsets. */
osd_x = x;
osd_y = y;
osd_w = w;
osd_lines = h / (gl_smallFont.h+5);
osd_h = h - h % (gl_smallFont.h+5);
/* Calculate some font things. */
osd_tabLen = gl_printWidthRaw( &gl_smallFont, " " );
osd_hyphenLen = gl_printWidthRaw( &gl_smallFont, "- " );
return 0;
}
/**
* @brief Destroys all the OSD.
*/
void osd_exit (void)
{
int i;
OSD_t *ll;
if (osd_list == NULL)
return;
for (i=0; i<array_size(osd_list); i++) {
ll = &osd_list[i];
osd_free( ll );
}
array_free( osd_list );
osd_list = NULL;
}
/**
* @brief Renders all the OSD.
*/
void osd_render (void)
{
OSD_t *ll;
double p;
int i, j, k, l;
int w, x;
const glColour *c;
/* Nothing to render. */
if (osd_list == NULL)
return;
/* Background. */
gl_renderRect( osd_x-5., osd_y-(osd_rh+5.), osd_w+10., osd_rh+10, &cBlackHilight );
/* Render each thingy. */
p = osd_y-gl_smallFont.h;
l = 0;
for (k=0; k<array_size(osd_list); k++) {
ll = &osd_list[k];
x = osd_x;
w = osd_w;
/* Print title. */
gl_printMaxRaw( &gl_smallFont, w, x, p, NULL, ll->title );
p -= gl_smallFont.h + 5.;
l++;
if (l >= osd_lines)
return;
/* Print items. */
for (i=0; i<ll->nitems; i++) {
x = osd_x;
w = osd_w;
c = (ll->active == i) ? &cConsole : NULL;
for (j=0; j<ll->items[i].nchunks; j++) {
gl_printMaxRaw( &gl_smallFont, w, x, p,
c, ll->items[i].chunks[j] );
if (j==0) {
w = osd_w - osd_hyphenLen;
x = osd_x + osd_hyphenLen;
}
p -= gl_smallFont.h + 5.;
l++;
if (l >= osd_lines)
return;
}
}
}
}
/**
* @brief Calculates and sets the length of the OSD.
*/
static void osd_calcDimensions (void)
{
OSD_t *ll;
int i, j, k;
double len;
/* Nothing to render. */
if (osd_list == NULL)
return;
/* Render each thingy. */
len = 0;
for (k=0; k<array_size(osd_list); k++) {
ll = &osd_list[k];
/* Print title. */
len += gl_smallFont.h + 5.;
/* Print items. */
for (i=0; i<ll->nitems; i++)
for (j=0; j<ll->items[i].nchunks; j++)
len += gl_smallFont.h + 5.;
}
osd_rh = MIN( len, osd_h );
}
/**
* @brief Gets the title of an OSD.
*
* @param osd OSD to get title of.
* @return Title of the OSD.
*/
char *osd_getTitle( unsigned int osd )
{
OSD_t *o;
o = osd_get(osd);
if (o == NULL)
return NULL;
return o->title;
}
/**
* @brief Gets the items of an OSD.
*
* @param osd OSD to get items of.
* @param[out] nitems Number of OSD items.
*/
char **osd_getItems( unsigned int osd, int *nitems )
{
OSD_t *o;
o = osd_get(osd);
if (o == NULL) {
*nitems = 0;
return NULL;
}
*nitems = o->nitems;
return o->msg;
}