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Add word breaks on punctuation characters.

This commit is contained in:
bruvzg 2020-12-14 10:30:32 +02:00
parent 06314c1b0e
commit 06ae77a320
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GPG Key ID: 009E1BFE42239B95
5 changed files with 33 additions and 12 deletions
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3
doc/classes/TextServer.xml
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@ -1167,6 +1167,9 @@
<constant name="GRAPHEME_IS_ELONGATION" value="128" enum="GraphemeFlag">
Grapheme is kashida.
</constant>
<constant name="GRAPHEME_IS_PUNCTUATION" value="256" enum="GraphemeFlag">
Grapheme is punctuation character.
</constant>
<constant name="HINTING_NONE" value="0" enum="Hinting">
Disables font hinting (smoother but less crisp).
</constant>

15
modules/text_server_adv/text_server_adv.cpp
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@ -1645,13 +1645,18 @@ bool TextServerAdvanced::shaped_text_update_breaks(RID p_shaped) {
if (c == 0x0009 || c == 0x000b) {
sd_glyphs[i].flags |= GRAPHEME_IS_TAB;
}
if (is_whitespace(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_SPACE;
}
if (u_ispunct(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_PUNCTUATION;
}
if (breaks.has(sd->glyphs[i].start)) {
if (breaks[sd->glyphs[i].start]) {
sd_glyphs[i].flags |= GRAPHEME_IS_BREAK_HARD;
} else {
if (is_whitespace(c)) {
sd_glyphs[i].flags |= GRAPHEME_IS_BREAK_SOFT;
sd_glyphs[i].flags |= GRAPHEME_IS_SPACE;
} else {
TextServer::Glyph gl;
gl.start = sd_glyphs[i].start;
@ -1766,6 +1771,10 @@ bool TextServerAdvanced::shaped_text_update_justification_ops(RID p_shaped) {
shaped_text_update_breaks(p_shaped);
}
if (sd->justification_ops_valid) {
return true; // Noting to do.
}
const UChar *data = sd->utf16.ptr();
int32_t data_size = sd->utf16.length();
@ -1796,9 +1805,9 @@ bool TextServerAdvanced::shaped_text_update_justification_ops(RID p_shaped) {
if (ubrk_getRuleStatus(bi) != UBRK_WORD_NONE) {
int i = _convert_pos(sd, ubrk_current(bi));
jstops[i + sd->start] = false;
int ks = _generate_kashida_justification_opportunies(sd->text, limit, i) + sd->start;
int ks = _generate_kashida_justification_opportunies(sd->text, limit, i);
if (ks != -1) {
jstops[ks] = true;
jstops[ks + sd->start] = true;
}
limit = i;
}

7
modules/text_server_fb/text_server_fb.cpp
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@ -45,6 +45,10 @@ _FORCE_INLINE_ bool is_linebreak(char32_t p_char) {
return (p_char >= 0x000a && p_char <= 0x000d) || (p_char == 0x0085) || (p_char == 0x2028) || (p_char == 0x2029);
}
_FORCE_INLINE_ bool is_punct(char32_t p_char) {
return (p_char >= 0x0020 && p_char <= 0x002F) || (p_char >= 0x003A && p_char <= 0x0040) || (p_char >= 0x005B && p_char <= 0x0060) || (p_char >= 0x007B && p_char <= 0x007E) || (p_char >= 0x2000 && p_char <= 0x206F) || (p_char >= 0x3000 && p_char <= 0x303F);
}
/*************************************************************************/
String TextServerFallback::interface_name = "Fallback";
@ -1029,6 +1033,9 @@ bool TextServerFallback::shaped_text_update_breaks(RID p_shaped) {
for (int i = 0; i < sd_size; i++) {
if (sd->glyphs[i].count > 0) {
char32_t c = sd->text[sd->glyphs[i].start];
if (is_punct(c)) {
sd->glyphs.write[i].flags |= GRAPHEME_IS_PUNCTUATION;
}
if (is_whitespace(c) && !is_linebreak(c)) {
sd->glyphs.write[i].flags |= GRAPHEME_IS_SPACE;
sd->glyphs.write[i].flags |= GRAPHEME_IS_BREAK_SOFT;

7
servers/text_server.cpp
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@ -376,6 +376,7 @@ void TextServer::_bind_methods() {
BIND_ENUM_CONSTANT(GRAPHEME_IS_BREAK_SOFT);
BIND_ENUM_CONSTANT(GRAPHEME_IS_TAB);
BIND_ENUM_CONSTANT(GRAPHEME_IS_ELONGATION);
BIND_ENUM_CONSTANT(GRAPHEME_IS_PUNCTUATION);
/* Hinting */
BIND_ENUM_CONSTANT(HINTING_NONE);
@ -679,7 +680,7 @@ Vector<Vector2i> TextServer::shaped_text_get_line_breaks(RID p_shaped, float p_w
Vector<Vector2i> TextServer::shaped_text_get_word_breaks(RID p_shaped) const {
Vector<Vector2i> words;
const_cast<TextServer *>(this)->shaped_text_update_breaks(p_shaped);
const_cast<TextServer *>(this)->shaped_text_update_justification_ops(p_shaped);
const Vector<Glyph> &logical = const_cast<TextServer *>(this)->shaped_text_sort_logical(p_shaped);
const Vector2i &range = shaped_text_get_range(p_shaped);
@ -690,8 +691,8 @@ Vector<Vector2i> TextServer::shaped_text_get_word_breaks(RID p_shaped) const {
for (int i = 0; i < l_size; i++) {
if (l_gl[i].count > 0) {
if ((l_gl[i].flags & GRAPHEME_IS_SPACE) == GRAPHEME_IS_SPACE) {
words.push_back(Vector2i(word_start, l_gl[i].end - 1));
if (((l_gl[i].flags & GRAPHEME_IS_SPACE) == GRAPHEME_IS_SPACE) || ((l_gl[i].flags & GRAPHEME_IS_PUNCTUATION) == GRAPHEME_IS_PUNCTUATION)) {
words.push_back(Vector2i(word_start, l_gl[i].start));
word_start = l_gl[i].end;
}
}

13
servers/text_server.h
View File

@ -74,11 +74,12 @@ public:
GRAPHEME_IS_VALID = 1 << 0, // Glyph is valid.
GRAPHEME_IS_RTL = 1 << 1, // Glyph is right-to-left.
GRAPHEME_IS_VIRTUAL = 1 << 2, // Glyph is not part of source string (added by fit_to_width function, do not affect caret movement).
GRAPHEME_IS_SPACE = 1 << 3, // Is whitespace (for justification).
GRAPHEME_IS_BREAK_HARD = 1 << 4, // Is line break (mandatory break, e.g "\n")
GRAPHEME_IS_BREAK_SOFT = 1 << 5, // Is line break (optional break, e.g space)
GRAPHEME_IS_TAB = 1 << 6, // Is tab or vertical tab
GRAPHEME_IS_ELONGATION = 1 << 7 // Elongation (e.g kashida), glyph can be duplicated or truncated to fit line to width.
GRAPHEME_IS_SPACE = 1 << 3, // Is whitespace (for justification and word breaks).
GRAPHEME_IS_BREAK_HARD = 1 << 4, // Is line break (mandatory break, e.g. "\n").
GRAPHEME_IS_BREAK_SOFT = 1 << 5, // Is line break (optional break, e.g. space).
GRAPHEME_IS_TAB = 1 << 6, // Is tab or vertical tab.
GRAPHEME_IS_ELONGATION = 1 << 7, // Elongation (e.g. kashida), glyph can be duplicated or truncated to fit line to width.
GRAPHEME_IS_PUNCTUATION = 1 << 8 // Punctuation (can be used as word break, but not line break or justifiction).
};
enum Hinting {
@ -104,7 +105,7 @@ public:
uint8_t count = 0; // Number of glyphs in the grapheme, set in the first glyph only.
uint8_t repeat = 1; // Draw multiple times in the row.
uint8_t flags = 0; // Grapheme flags (valid, rtl, virtual), set in the first glyph only.
uint16_t flags = 0; // Grapheme flags (valid, rtl, virtual), set in the first glyph only.
float x_off = 0.f; // Offset from the origin of the glyph on baseline.
float y_off = 0.f;