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GRAPHICS: MACGUI: Parse image extension string into a fixed format

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This commit is contained in:
Eugene Sandulenko 2023-10-31 02:38:23 +01:00
parent 7e4c81e1ff
commit fc00188eeb
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GPG Key ID: 014D387312D34F08
1 changed files with 81 additions and 1 deletions
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82
graphics/macgui/mactext-canvas.cpp
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@ -122,6 +122,86 @@ void MacTextCanvas::splitString(const Common::U32String &str, int curLine, MacFo
(void)splitString(str.c_str(), curLine, defaultFormatting);
}
Common::String preprocessImageExt(const char *ptr) {
// w[idth]=WWWw -- width in units 'w'
// h[eight]=HHHh -- height in units 'h'
//
// units:
// % for percents of the text width -> %
// em for font height as a unit -> e
// px for actual pixels -> p
//
// Translated into fixed format:
// WWWWwHHHHh -- 4 fixed hex numbers followed by units
int w = 0, h = 0;
char wu = ' ', hu = ' ';
enum {
kStateNone,
kStateW,
kStateH,
};
int state = kStateNone;
while (*ptr) {
if (*ptr == ' ' || *ptr == '\t') {
ptr++;
continue;
}
if (*ptr == 'w' || *ptr == 'h') {
state = *ptr == 'w' ? kStateW : kStateH;
while (*ptr && *ptr != '=')
ptr++;
if (*ptr != '=') {
warning("MacTextCanvas: Malformatted image extention: '=' expected at '%s'", ptr);
return "";
}
} else if (Common::isDigit(*ptr)) {
int num = 0;
if (state == kStateNone) {
warning("MacTextCanvas: Malformatted image extention: unexpected digit at '%s'", ptr);
return "";
}
while (*ptr && Common::isDigit(*ptr)) {
num *= 10;
num += *ptr - '0';
ptr++;
}
if (*ptr == 'e' || *ptr == '%' || *ptr == 'p') {
if (state == kStateW) {
w = num;
wu = *ptr;
} else {
h = num;
hu = *ptr;
}
while (*ptr && *ptr != ' ' && *ptr != '\t')
ptr++;
} else {
warning("MacTextCanvas: Malformatted image extention: %% or e[m] or p[x] expected at '%s'", ptr);
return "";
}
} else {
warning("MacTextCanvas: Malformatted image extention: w[idth] or h[eight] expected at '%s'", ptr);
return "";
}
ptr++;
}
return Common::String::format("%04x%c%04x%c", w, wu, h, hu);
}
const Common::U32String::value_type *MacTextCanvas::splitString(const Common::U32String::value_type *s, int curLine, MacFontRun &defaultFormatting) {
if (_text.empty()) {
_text.resize(1);
@ -328,7 +408,7 @@ const Common::U32String::value_type *MacTextCanvas::splitString(const Common::U3
s += len;
s = readHex(&len, s, 2);
_text[curLine].picext = Common::U32String(s, len);
_text[curLine].picext = preprocessImageExt(Common::U32String(s, len).encode().c_str());
s += len;
D(9, "** splitString[i]: %d%% fname: '%s' alt: '%s' title: '%s' ext: '%s'",