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[ui] Fix some passage text shaping bugs

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Passage_Delete needs to check if the hierarchy is valid as no text may
have been added, which results in a null pointer for the hierarchy.

Text shaping needs to set language etc every time it resets the buffer.
This commit is contained in:
Bill Currie 2022-12-09 15:20:10 +09:00
parent b93ab95c47
commit c5af5728fe
2 changed files with 8 additions and 5 deletions
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4
libs/ui/passage.c
View file

@ -209,6 +209,8 @@ Passage_New (ecs_registry_t *reg)
VISIBLE void
Passage_Delete (passage_t *passage)
{
Hierarchy_Delete (passage->hierarchy);
if (passage->hierarchy) {
Hierarchy_Delete (passage->hierarchy);
}
free (passage);
}

9
libs/ui/text.c
View file

@ -84,6 +84,7 @@ Text_Init (void)
{
text_reg = ECS_NewRegistry ();
ECS_RegisterComponents (text_reg, text_components, text_type_count);
text_reg->href_comp = text_href;
}
typedef struct glyphnode_s {
@ -110,9 +111,6 @@ Text_View (font_t *font, passage_t *passage)
/*XXX*/hb_script_t script = HB_SCRIPT_LATIN;
/*XXX*/hb_direction_t direction = HB_DIRECTION_LTR;
/*XXX*/hb_language_t language = hb_language_from_string ("en", 2);
hb_buffer_set_direction (buffer, direction);
hb_buffer_set_script (buffer, script);
hb_buffer_set_language (buffer, language);
uint32_t glyph_count = 0;
@ -121,12 +119,15 @@ Text_View (font_t *font, passage_t *passage)
for (uint32_t i = 0; i < h->childCount[0]; i++) {
uint32_t paragraph = h->childIndex[0] + i;
for (uint32_t j = 0; j < h->childCount[paragraph]; j++) {
uint32_t textind = h->childIndex[0] + j;
uint32_t textind = h->childIndex[paragraph] + j;
psg_text_t *textobj = &text_objects[textind];
const char *str = passage->text + textobj->text;
uint32_t len = textobj->size;
hb_buffer_reset (buffer);
hb_buffer_set_direction (buffer, direction);
hb_buffer_set_script (buffer, script);
hb_buffer_set_language (buffer, language);
hb_buffer_add_utf8 (buffer, str, len, 0, len);
hb_shape (fnt, buffer, 0, 0);