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/*
* Copyright (c) 1997 - 2001 Hansjrg Malthaner
*
* This file is part of the Simutrans project under the artistic license.
* (see license.txt)
*/
#include <string.h>
#include "dataobj/koord.h"
#include "simdebug.h"
#include "simticker.h"
#include "simgraph.h"
#include "simcolor.h"
#include "tpl/slist_tpl.h"
#include "utils/simstring.h"
// how much scrolling per call?
#define X_DIST 2
struct node {
char msg[256];
koord pos;
PLAYER_COLOR_VAL color;
sint16 xpos;
long w;
};
static slist_tpl<node> list;
static koord default_pos = koord::invalid;
static bool redraw_all; // true, if also trigger background need redraw
static int next_pos;
bool ticker::empty()
{
return list.empty();
}
void ticker::clear_ticker()
{
list.clear();
}
void ticker::set_redraw_all(const bool b)
{
redraw_all=b;
}
void ticker::add_msg(const char* txt, koord pos, int color)
{
// don't store more than 4 messages, it's useless.
const int count = list.get_count();
if(count==0) {
redraw_all = true;
next_pos = display_get_width();
default_pos = koord::invalid;
}
if(count < 4) {
// Don't repeat messages
if (count == 0 || !strstart(list.back().msg, txt)) {
node n;
int i=0;
// remove breaks
for( int j=0; i<250 && txt[j]!=0; j++ ) {
if(txt[i]=='\n' && (i==0 || n.msg[i-1]!=' ') ) {
n.msg[i++] = ' ';
}
else {
n.msg[i++] = txt[j];
}
}
n.msg[i++] = 0;
n.pos = pos;
n.color = color;
n.xpos = next_pos;
n.w = proportional_string_width(n.msg);
next_pos += n.w + 18;
list.append(n);
}
}
}
koord ticker::get_welt_pos()
{
return default_pos;
}
void ticker::zeichnen(void)
{
if (!list.empty()) {
const int start_y=display_get_height()-TICKER_YPOS_BOTTOM;
const int width = display_get_width();
// redraw whole ticker
if(redraw_all) {
redraw_ticker();
}
// redraw ticker partially
else {
display_scroll_band( start_y+4, X_DIST, TICKER_HEIGHT-3 );
display_fillbox_wh(width-X_DIST, start_y+1, X_DIST, TICKER_HEIGHT, MN_GREY2, true);
// ok, ready for the text
PUSH_CLIP(width-X_DIST-1,start_y+1,X_DIST+1,TICKER_HEIGHT);
FOR(slist_tpl<node>, & n, list) {
n.xpos -= X_DIST;
if (n.xpos < width) {
display_proportional_clip(n.xpos, start_y + 4, n.msg, ALIGN_LEFT, n.color, true);
default_pos = n.pos;
}
}
POP_CLIP();
}
// remove old news
while (!list.empty() && list.front().xpos + list.front().w < 0) {
list.remove_first();
}
if(next_pos>width) {
next_pos -= X_DIST;
}
redraw_all = false;
}
}
// complete redraw (after resizing)
void ticker::redraw_ticker()
{
if (!list.empty()) {
const int start_y=display_get_height()-TICKER_YPOS_BOTTOM;
const int width = display_get_width();
// just draw the ticker grey ... (to be sure ... )
display_fillbox_wh(0, start_y, width, 1, COL_BLACK, true);
display_fillbox_wh(0, start_y+1, width, TICKER_HEIGHT, MN_GREY2, true);
FOR(slist_tpl<node>, & n, list) {
n.xpos -= X_DIST;
if (n.xpos < width) {
display_proportional_clip(n.xpos, start_y + 4, n.msg, ALIGN_LEFT, n.color, true);
default_pos = n.pos;
}
}
}
}
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