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[Label] Add support for tab stops.

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This commit is contained in:
bruvzg 2023-04-16 14:48:43 +03:00
parent a5a23678c4
commit b23f259e67
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GPG key ID: 7960FCF39844EC38
3 changed files with 41 additions and 9 deletions
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3
doc/classes/Label.xml
View file

@ -71,6 +71,9 @@
<member name="structured_text_bidi_override_options" type="Array" setter="set_structured_text_bidi_override_options" getter="get_structured_text_bidi_override_options" default="[]">
Set additional options for BiDi override.
</member>
<member name="tab_stops" type="PackedFloat32Array" setter="set_tab_stops" getter="get_tab_stops" default="PackedFloat32Array()">
Aligns text to the given tab-stops.
</member>
<member name="text" type="String" setter="set_text" getter="get_text" default="&quot;&quot;">
The text to display on screen.
</member>

43
scene/gui/label.cpp
View file

@ -132,6 +132,9 @@ void Label::_shape() {
TS->shaped_text_set_spacing(text_rid, TextServer::SpacingType(i), font->get_spacing(TextServer::SpacingType(i)));
}
TS->shaped_text_set_bidi_override(text_rid, structured_text_parser(st_parser, st_args, txt));
if (!tab_stops.is_empty()) {
TS->shaped_text_tab_align(text_rid, tab_stops);
}
dirty = false;
font_dirty = false;
lines_dirty = true;
@ -162,6 +165,9 @@ void Label::_shape() {
PackedInt32Array line_breaks = TS->shaped_text_get_line_breaks(text_rid, width, 0, autowrap_flags);
for (int i = 0; i < line_breaks.size(); i = i + 2) {
RID line = TS->shaped_text_substr(text_rid, line_breaks[i], line_breaks[i + 1] - line_breaks[i]);
if (!tab_stops.is_empty()) {
TS->shaped_text_tab_align(line, tab_stops);
}
lines_rid.push_back(line);
}
}
@ -205,6 +211,10 @@ void Label::_shape() {
// Fill after min_size calculation.
BitField<TextServer::JustificationFlag> line_jst_flags = jst_flags;
if (!tab_stops.is_empty()) {
line_jst_flags.set_flag(TextServer::JUSTIFICATION_AFTER_LAST_TAB);
}
if (autowrap_mode != TextServer::AUTOWRAP_OFF) {
int visible_lines = get_visible_line_count();
bool lines_hidden = visible_lines > 0 && visible_lines < lines_rid.size();
@ -213,13 +223,13 @@ void Label::_shape() {
}
if (horizontal_alignment == HORIZONTAL_ALIGNMENT_FILL) {
int jst_to_line = visible_lines;
if (lines_rid.size() == 1 && jst_flags.has_flag(TextServer::JUSTIFICATION_DO_NOT_SKIP_SINGLE_LINE)) {
if (lines_rid.size() == 1 && line_jst_flags.has_flag(TextServer::JUSTIFICATION_DO_NOT_SKIP_SINGLE_LINE)) {
jst_to_line = lines_rid.size();
} else {
if (jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE)) {
if (line_jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE)) {
jst_to_line = visible_lines - 1;
}
if (jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE_WITH_VISIBLE_CHARS)) {
if (line_jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE_WITH_VISIBLE_CHARS)) {
for (int i = visible_lines - 1; i >= 0; i--) {
if (TS->shaped_text_has_visible_chars(lines_rid[i])) {
jst_to_line = i;
@ -230,7 +240,7 @@ void Label::_shape() {
}
for (int i = 0; i < lines_rid.size(); i++) {
if (i < jst_to_line) {
TS->shaped_text_fit_to_width(lines_rid[i], width, jst_flags);
TS->shaped_text_fit_to_width(lines_rid[i], width, line_jst_flags);
} else if (i == (visible_lines - 1)) {
TS->shaped_text_overrun_trim_to_width(lines_rid[i], width, overrun_flags);
}
@ -241,13 +251,13 @@ void Label::_shape() {
} else {
// Autowrap disabled.
int jst_to_line = lines_rid.size();
if (lines_rid.size() == 1 && jst_flags.has_flag(TextServer::JUSTIFICATION_DO_NOT_SKIP_SINGLE_LINE)) {
if (lines_rid.size() == 1 && line_jst_flags.has_flag(TextServer::JUSTIFICATION_DO_NOT_SKIP_SINGLE_LINE)) {
jst_to_line = lines_rid.size();
} else {
if (jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE)) {
if (line_jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE)) {
jst_to_line = lines_rid.size() - 1;
}
if (jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE_WITH_VISIBLE_CHARS)) {
if (line_jst_flags.has_flag(TextServer::JUSTIFICATION_SKIP_LAST_LINE_WITH_VISIBLE_CHARS)) {
for (int i = lines_rid.size() - 1; i >= 0; i--) {
if (TS->shaped_text_has_visible_chars(lines_rid[i])) {
jst_to_line = i;
@ -258,10 +268,10 @@ void Label::_shape() {
}
for (int i = 0; i < lines_rid.size(); i++) {
if (i < jst_to_line && horizontal_alignment == HORIZONTAL_ALIGNMENT_FILL) {
TS->shaped_text_fit_to_width(lines_rid[i], width, jst_flags);
TS->shaped_text_fit_to_width(lines_rid[i], width, line_jst_flags);
overrun_flags.set_flag(TextServer::OVERRUN_JUSTIFICATION_AWARE);
TS->shaped_text_overrun_trim_to_width(lines_rid[i], width, overrun_flags);
TS->shaped_text_fit_to_width(lines_rid[i], width, jst_flags | TextServer::JUSTIFICATION_CONSTRAIN_ELLIPSIS);
TS->shaped_text_fit_to_width(lines_rid[i], width, line_jst_flags | TextServer::JUSTIFICATION_CONSTRAIN_ELLIPSIS);
} else {
TS->shaped_text_overrun_trim_to_width(lines_rid[i], width, overrun_flags);
}
@ -853,6 +863,18 @@ bool Label::is_clipping_text() const {
return clip;
}
void Label::set_tab_stops(const PackedFloat32Array &p_tab_stops) {
if (tab_stops != p_tab_stops) {
tab_stops = p_tab_stops;
dirty = true;
queue_redraw();
}
}
PackedFloat32Array Label::get_tab_stops() const {
return tab_stops;
}
void Label::set_text_overrun_behavior(TextServer::OverrunBehavior p_behavior) {
if (overrun_behavior == p_behavior) {
return;
@ -986,6 +1008,8 @@ void Label::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_justification_flags"), &Label::get_justification_flags);
ClassDB::bind_method(D_METHOD("set_clip_text", "enable"), &Label::set_clip_text);
ClassDB::bind_method(D_METHOD("is_clipping_text"), &Label::is_clipping_text);
ClassDB::bind_method(D_METHOD("set_tab_stops", "tab_stops"), &Label::set_tab_stops);
ClassDB::bind_method(D_METHOD("get_tab_stops"), &Label::get_tab_stops);
ClassDB::bind_method(D_METHOD("set_text_overrun_behavior", "overrun_behavior"), &Label::set_text_overrun_behavior);
ClassDB::bind_method(D_METHOD("get_text_overrun_behavior"), &Label::get_text_overrun_behavior);
ClassDB::bind_method(D_METHOD("set_uppercase", "enable"), &Label::set_uppercase);
@ -1019,6 +1043,7 @@ void Label::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "clip_text"), "set_clip_text", "is_clipping_text");
ADD_PROPERTY(PropertyInfo(Variant::INT, "text_overrun_behavior", PROPERTY_HINT_ENUM, "Trim Nothing,Trim Characters,Trim Words,Ellipsis,Word Ellipsis"), "set_text_overrun_behavior", "get_text_overrun_behavior");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "uppercase"), "set_uppercase", "is_uppercase");
ADD_PROPERTY(PropertyInfo(Variant::PACKED_FLOAT32_ARRAY, "tab_stops"), "set_tab_stops", "get_tab_stops");
ADD_GROUP("Displayed Text", "");
ADD_PROPERTY(PropertyInfo(Variant::INT, "lines_skipped", PROPERTY_HINT_RANGE, "0,999,1"), "set_lines_skipped", "get_lines_skipped");

4
scene/gui/label.h
View file

@ -65,6 +65,7 @@ private:
float visible_ratio = 1.0;
int lines_skipped = 0;
int max_lines_visible = -1;
PackedFloat32Array tab_stops;
Ref<LabelSettings> settings;
@ -142,6 +143,9 @@ public:
void set_clip_text(bool p_clip);
bool is_clipping_text() const;
void set_tab_stops(const PackedFloat32Array &p_tab_stops);
PackedFloat32Array get_tab_stops() const;
void set_text_overrun_behavior(TextServer::OverrunBehavior p_behavior);
TextServer::OverrunBehavior get_text_overrun_behavior() const;