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sdtui: lay the groundwork for formatted entries

This commit is contained in:
Přemysl Eric Janouch 2021-10-10 03:38:16 +02:00
parent 6f7fbbb438
commit bc939712cb
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 54 additions and 16 deletions
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70
src/sdtui.c
View File

@ -194,6 +194,7 @@ struct view_entry
{
gchar * word; ///< Word
GPtrArray * definitions; ///< Word definition entries (gchar *)
GPtrArray * formatting; ///< chtype * or NULL per definition
};
struct dictionary
@ -275,10 +276,12 @@ view_entry_split_add (ViewEntry *ve, const gchar *text)
if (nl != p)
{
g_ptr_array_add (ve->definitions, g_strndup (p, nl - p));
g_ptr_array_add (ve->formatting, NULL);
}
if (*p)
{
g_ptr_array_add (ve->definitions, g_strdup (p));
g_ptr_array_add (ve->formatting, NULL);
}
}
@ -295,6 +298,7 @@ view_entry_new (StardictIterator *iterator)
g_return_val_if_fail (entry != NULL, NULL);
ve->definitions = g_ptr_array_new_with_free_func (g_free);
ve->formatting = g_ptr_array_new_with_free_func (g_free);
gboolean found_anything_displayable = FALSE;
for (const GList *fields = stardict_entry_get_fields (entry); fields; )
{
@ -341,6 +345,7 @@ view_entry_free (ViewEntry *ve)
{
g_free (ve->word);
g_ptr_array_free (ve->definitions, TRUE);
g_ptr_array_free (ve->formatting, TRUE);
g_slice_free1 (sizeof *ve, ve);
}
@ -777,10 +782,11 @@ row_buffer_init (RowBuffer *self, Application *app)
/// Replace invalid chars and push all codepoints to the array w/ attributes.
static void
row_buffer_append (RowBuffer *self, const gchar *str, chtype attrs)
row_buffer_append_length (RowBuffer *self,
const gchar *text, glong length, chtype attrs)
{
glong ucs4_len;
gunichar *ucs4 = g_utf8_to_ucs4_fast (str, -1, &ucs4_len);
gunichar *ucs4 = g_utf8_to_ucs4_fast (text, length, &ucs4_len);
for (glong i = 0; i < ucs4_len; i++)
{
// XXX: this is very crude as it disrespects combining marks
@ -793,6 +799,47 @@ row_buffer_append (RowBuffer *self, const gchar *str, chtype attrs)
g_free (ucs4);
}
static void
row_buffer_append (RowBuffer *self, const gchar *text, chtype attrs)
{
row_buffer_append_length (self, text, -1, attrs);
}
/// Combine attributes, taking care to replace colour bits entirely
static void
row_buffer_merge_attributes (chtype *target, int merged)
{
if (merged & A_COLOR)
*target = (*target & ~A_COLOR) | merged;
else
*target |= merged;
}
static void
row_buffer_append_with_formatting (RowBuffer *self,
const gchar *text, const chtype *formatting, chtype default_attrs)
{
if (!formatting)
{
row_buffer_append (self, text, default_attrs);
return;
}
while (*text)
{
glong chunk_length = 1;
while (text[chunk_length] && formatting[chunk_length] == *formatting)
chunk_length++;
chtype merged = default_attrs;
row_buffer_merge_attributes (&merged, *formatting);
row_buffer_append_length (self, text, chunk_length, merged);
text += chunk_length;
formatting += chunk_length;
}
}
/// Pop as many codepoints as needed to free up "space" character cells.
/// Given the suffix nature of combining marks, this should work pretty fine.
static gint
@ -995,16 +1042,6 @@ app_show_help (Application *self)
app_show_message (self, lines, G_N_ELEMENTS (lines));
}
/// Combine attributes, taking care to replace colour bits entirely
static void
app_merge_attributes (int *target, int merged)
{
if (merged & A_COLOR)
*target = (*target & ~A_COLOR) | merged;
else
*target |= merged;
}
/// Redraw the dictionary view.
static void
app_redraw_view (Application *self)
@ -1029,11 +1066,11 @@ app_redraw_view (Application *self)
ViewEntry *ve = g_ptr_array_index (self->entries, i);
for (; k < ve->definitions->len; k++)
{
int attrs = ((self->top_position + i) & 1)
chtype attrs = ((self->top_position + i) & 1)
? APP_ATTR (ODD) : APP_ATTR (EVEN);
if (shown == self->selected)
app_merge_attributes (&attrs, self->focused
row_buffer_merge_attributes (&attrs, self->focused
? APP_ATTR (SELECTION) : APP_ATTR (DEFOCUSED));
gboolean last = k + 1 == ve->definitions->len;
@ -1058,8 +1095,9 @@ app_redraw_view (Application *self)
row_buffer_init (&buf, self);
row_buffer_append (&buf, " ", attrs);
row_buffer_append (&buf,
g_ptr_array_index (ve->definitions, k), attrs);
row_buffer_append_with_formatting (&buf,
g_ptr_array_index (ve->definitions, k),
g_ptr_array_index (ve->formatting, k), attrs);
row_buffer_finish (&buf, COLS - left_width, attrs);
if ((gint) ++shown == LINES - TOP_BAR_CUTOFF)