bool gfxr_font_calculate_size(Common::Array<TextFragment> &fragments, gfx_bitmap_font_t *font, int max_width,
const char *text, int *width, int *height, int *line_height_p, int *last_offset_p, int flags) {
int maxheight = font->line_height;
int last_breakpoint = 0;
int last_break_width = 0;
int maxwidth = 0, localmaxwidth = 0;
const char *breakpoint_ptr = NULL;
unsigned char curChar;
if (line_height_p)
*line_height_p = font->line_height;
fragments.push_back(TextFragment(text));
while ((curChar = *text++)) {
if (curChar >= font->chars_nr) {
error("Invalid char 0x%02x (max. 0x%02x) encountered in text string '%s', font %04x",
curChar, font->chars_nr, text, font->ID);
if (font->chars_nr > ' ')
curChar = ' ';
else {
return false;
}
}
if (((curChar == '\n') || (curChar == 0x0d)) && !(flags & kFontNoNewlines)) {
fragments.back().length = text - 1 - fragments.back().offset;
if (*text)
maxheight += font->line_height;
if (curChar == 0x0d && *text == '\n')
text++; // Interpret DOS-style CR LF as single NL
fragments.push_back(TextFragment(text));
if (localmaxwidth > maxwidth)
maxwidth = localmaxwidth;
localmaxwidth = 0;
} else { // curChar != '\n'
localmaxwidth += font->widths[curChar];
if (localmaxwidth > max_width) {
int blank_break = 1; // break is at a blank char, i.e. not within a word
maxheight += font->line_height;
if (last_breakpoint == 0) { // Text block too long and without whitespace?
last_breakpoint = localmaxwidth - font->widths[curChar];
last_break_width = 0;
--text;
blank_break = 0; // non-blank break
} else {
text = breakpoint_ptr + 1;
assert(breakpoint_ptr);
}
if (last_breakpoint == 0) {
warning("[GFX] maxsize %d too small for '%s'", max_width, text);
}
if (last_breakpoint > maxwidth)
maxwidth = last_breakpoint;
fragments.back().length = text - blank_break - fragments.back().offset;
fragments.push_back(TextFragment(text));
localmaxwidth = localmaxwidth - last_breakpoint;
if (!(flags & kFontCountWhitespace))
localmaxwidth -= last_break_width;
last_breakpoint = localmaxwidth = 0;
} else if (*text == ' ') {
last_breakpoint = localmaxwidth;
last_break_width = font->widths[curChar];
breakpoint_ptr = text;
}
}
}
if (localmaxwidth > maxwidth)
*width = localmaxwidth;
else
*width = maxwidth;
if (last_offset_p)
*last_offset_p = localmaxwidth;
if (height)
*height = maxheight;
fragments.back().length = text - fragments.back().offset - 1;
return true;
}
static uint tableRegionToRegion(lua_State *L, const char *className) {
#ifdef DEBUG
int __startStackDepth = lua_gettop(L);
#endif
// You can define a region in Lua in two ways:
// 1. A table that defines a polygon (polgon = table with numbers, which define
// two consecutive numbers per vertex)
// 2. A table containing more polygon definitions
// Then the first polygon is the contour of the region, and the following are holes
// defined in the first polygon.
// It may be passed only one parameter, and this must be a table
if (lua_gettop(L) != 1 || !lua_istable(L, -1)) {
luaL_error(L, "First and only parameter has to be of type \"table\".");
return 0;
}
uint regionHandle = 0;
if (!strcmp(className, REGION_CLASS_NAME)) {
regionHandle = Region::create(Region::RT_REGION);
} else if (!strcmp(className, WALKREGION_CLASS_NAME)) {
regionHandle = WalkRegion::create(Region::RT_WALKREGION);
} else {
assert(false);
}
assert(regionHandle);
// If the first element of the parameter is a number, then case 1 is accepted
// If the first element of the parameter is a table, then case 2 is accepted
// If the first element of the parameter has a different type, there is an error
lua_rawgeti(L, -1, 1);
int firstElementType = lua_type(L, -1);
lua_pop(L, 1);
switch (firstElementType) {
case LUA_TNUMBER: {
Polygon polygon;
tablePolygonToPolygon(L, polygon);
RegionRegistry::instance().resolveHandle(regionHandle)->init(polygon);
}
break;
case LUA_TTABLE: {
lua_rawgeti(L, -1, 1);
Polygon polygon;
tablePolygonToPolygon(L, polygon);
lua_pop(L, 1);
int polygonCount = luaL_getn(L, -1);
if (polygonCount == 1)
RegionRegistry::instance().resolveHandle(regionHandle)->init(polygon);
else {
Common::Array<Polygon> holes;
holes.reserve(polygonCount - 1);
for (int i = 2; i <= polygonCount; i++) {
lua_rawgeti(L, -1, i);
holes.resize(holes.size() + 1);
tablePolygonToPolygon(L, holes.back());
lua_pop(L, 1);
}
assert((int)holes.size() == polygonCount - 1);
RegionRegistry::instance().resolveHandle(regionHandle)->init(polygon, &holes);
}
}
break;
default:
luaL_error(L, "Illegal region definition.");
return 0;
}
#ifdef DEBUG
assert(__startStackDepth == lua_gettop(L));
#endif
return regionHandle;
}
