From 9a8e06a2557707381c14038fdbca306da447112a Mon Sep 17 00:00:00 2001 From: tasn Date: Sun, 30 Jan 2011 10:32:15 +0000 Subject: [PATCH] Evas textblock: Made selection rtl friendly. There are still minor issues with rectangle positioning (1px off sometimes) but this is better than before. git-svn-id: http://svn.enlightenment.org/svn/e/trunk/evas@56415 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33 --- src/lib/canvas/evas_object_textblock.c | 322 ++++++++++++++++++++++++++------- 1 file changed, 255 insertions(+), 67 deletions(-) diff --git a/src/lib/canvas/evas_object_textblock.c b/src/lib/canvas/evas_object_textblock.c index 89ab0d7..475406e 100644 --- a/src/lib/canvas/evas_object_textblock.c +++ b/src/lib/canvas/evas_object_textblock.c @@ -7092,6 +7092,226 @@ evas_textblock_cursor_line_coord_set(Evas_Textblock_Cursor *cur, Evas_Coord y) } /** + * @internal + * Returns the geometry of the range in line ln. Cur1 is the start cursor, + * cur2 is the end cursor, NULL means from the start or to the end accordingly. + * Assumes that ln is valid, and that at least one of cur1 and cur2 is not NULL. + * + * @param ln the line to work on. + * @param cur1 the start cursor + * @param cur2 the end cursor + * @return Returns the geometry of the range + */ +static Eina_List * +_evas_textblock_cursor_range_in_line_geometry_get( + const Evas_Object_Textblock_Line *ln, const Evas_Textblock_Cursor *cur1, + const Evas_Textblock_Cursor *cur2) +{ + Evas_Object_Textblock_Item *it; + Evas_Object_Textblock_Item *it1, *it2; + Eina_List *rects = NULL; + Evas_Textblock_Rectangle *tr; + size_t start, end; + const Evas_Textblock_Cursor *cur; + cur = (cur1) ? cur1 : cur2; + + /* Find the first and last items */ + it1 = it2 = NULL; + start = end = 0; + EINA_INLIST_FOREACH(ln->items, it) + { + size_t item_len; + item_len = (it->type == EVAS_TEXTBLOCK_ITEM_TEXT) ? + eina_unicode_strlen(((Evas_Object_Textblock_Text_Item *) it)->text) + : 1; + if ((!cur1 || (cur1->pos < it->text_pos + item_len)) && + (!cur2 || (cur2->pos >= it->text_pos))) + { + if (!it1) + { + it1 = it; + start = (cur1) ? (cur1->pos - it->text_pos) : 0; + } + it2 = it; + end = (cur2) ? (cur2->pos - it->text_pos) : item_len; + } + } + /* Special case when they share the same item. */ + if (it1 == it2) + { + Evas_Coord x1, w1, x2, w2; + Evas_Coord x, w, y, h; + if (it1->type == EVAS_TEXTBLOCK_ITEM_TEXT) + { + Evas_Object_Textblock_Text_Item *ti; + int ret; + ti = _ITEM_TEXT(it1); + ret = cur->ENFN->font_char_coords_get(cur->ENDT, + ti->format->font.font, + ti->text, &ti->bidi_props, + start, + &x1, &y, &w1, &h); + if (!ret) + { + return NULL; + } + ret = cur->ENFN->font_char_coords_get(cur->ENDT, + ti->format->font.font, + ti->text, &ti->bidi_props, + end, + &x2, &y, &w2, &h); + if (!ret) + { + return NULL; + } + + /* This also takes bidi into account because of the positions + * in the text are taken into account */ + if (x2 > x1) + { + w = x2 - x1; + x = x1; + } + else + { + w = x1 - x2; + x = x2; + } + } + else + { + x = 0; + w = it1->w; + } + if (w > 0) + { + tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); + rects = eina_list_append(rects, tr); + tr->x = ln->x + it1->x + x; + tr->y = ln->y; + tr->h = ln->h; + tr->w = w; + } + } + else + { + /* Get the middle items */ + Evas_Coord min_x, max_x; + Evas_Coord x, w; + it = _ITEM(EINA_INLIST_GET(it1)->next); + min_x = max_x = it->x; + + if (it1->type == EVAS_TEXTBLOCK_ITEM_TEXT) + { + Evas_Coord y, h; + Evas_Object_Textblock_Text_Item *ti; + int ret; + ti = _ITEM_TEXT(it1); + + ret = cur->ENFN->font_char_coords_get(cur->ENDT, + ti->format->font.font, + ti->text, &ti->bidi_props, + start, + &x, &y, &w, &h); + if (!ret) + { + /* BUG! Skip the first item */ + x = w = 0; + } + else + { +#ifdef BIDI_SUPPORT + if (evas_bidi_is_rtl_char(&ti->bidi_props, 0)) + { + w = x; + x = 0; + } + else +#endif + { + w = it1->w - x; + } + } + } + else + { + x = 0; + w = it1->w; + } + if (w > 0) + { + tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); + rects = eina_list_append(rects, tr); + tr->x = ln->x + it1->x + x; + tr->y = ln->y; + tr->h = ln->h; + tr->w = w; + } + + while (it && (it != it2)) + { + max_x = it->x + it->w; + it = (Evas_Object_Textblock_Item *) EINA_INLIST_GET(it)->next; + } + if (min_x != max_x) + { + tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); + rects = eina_list_append(rects, tr); + tr->x = ln->x + min_x; + tr->y = ln->y; + tr->h = ln->h; + tr->w = max_x - min_x; + } + if (it2->type == EVAS_TEXTBLOCK_ITEM_TEXT) + { + Evas_Coord y, h; + Evas_Object_Textblock_Text_Item *ti; + int ret; + ti = _ITEM_TEXT(it2); + + ret = cur->ENFN->font_char_coords_get(cur->ENDT, + ti->format->font.font, + ti->text, &ti->bidi_props, + end, + &x, &y, &w, &h); + if (!ret) + { + /* BUG! skip the last item */ + x = w = 0; + } + else + { +#ifdef BIDI_SUPPORT + if (evas_bidi_is_rtl_char(&ti->bidi_props, 0)) + { + w = it2->w - x; + } + else +#endif + { + w = x; + x = 0; + } + } + } + else + { + x = 0; + w = it2->w; + } + if (w > 0) + { + tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); + rects = eina_list_append(rects, tr); + tr->x = ln->x + it2->x + x; + tr->y = ln->y; + tr->h = ln->h; + tr->w = w; + } + } + return rects; +} +/** * Get the geometry of a range. * * @param cur1 one side of the range. @@ -7101,14 +7321,17 @@ evas_textblock_cursor_line_coord_set(Evas_Textblock_Cursor *cur, Evas_Coord y) EAPI Eina_List * evas_textblock_cursor_range_geometry_get(const Evas_Textblock_Cursor *cur1, const Evas_Textblock_Cursor *cur2) { + Evas_Object_Textblock *o; + Evas_Object_Textblock_Line *ln1, *ln2; + Evas_Object_Textblock_Item *it1, *it2; Eina_List *rects = NULL; - Evas_Coord cx, cy, cw, ch, lx, ly, lw, lh; Evas_Textblock_Rectangle *tr; - int i, line, line2; - if (!cur1) return NULL; - if (!cur2) return NULL; + if (!cur1 || !cur1->node) return NULL; + if (!cur2 || !cur2->node) return NULL; if (cur1->obj != cur2->obj) return NULL; + o = (Evas_Object_Textblock *)(cur1->obj->object_data); + if (!o->formatted.valid) _relayout(cur1->obj); if (evas_textblock_cursor_compare(cur1, cur2) > 0) { const Evas_Textblock_Cursor *tc; @@ -7118,76 +7341,41 @@ evas_textblock_cursor_range_geometry_get(const Evas_Textblock_Cursor *cur1, cons cur2 = tc; } - line = evas_textblock_cursor_char_geometry_get(cur1, &cx, &cy, &cw, &ch); - if (line < 0) return NULL; - line = evas_textblock_cursor_line_geometry_get(cur1, &lx, &ly, &lw, &lh); - if (line < 0) return NULL; - line2 = evas_textblock_cursor_line_geometry_get(cur2, NULL, NULL, NULL, NULL); - if (line2 < 0) return NULL; + ln1 = ln2 = NULL; + it1 = it2 = NULL; + _find_layout_item_match(cur1, &ln1, &it1); + if (!ln1 || !it1) return NULL; + _find_layout_item_match(cur2, &ln2, &it2); + if (!ln2 || !it2) return NULL; - if (line == line2) + if (ln1 == ln2) { - tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); - rects = eina_list_append(rects, tr); - tr->x = cx; - tr->y = ly; - tr->h = lh; - line = evas_textblock_cursor_char_geometry_get(cur2, &cx, &cy, &cw, &ch); - if (line < 0) - { - while (rects) - { - free(rects->data); - rects = eina_list_remove_list(rects, rects); - } - return NULL; - } - tr->w = cx - tr->x; + rects = _evas_textblock_cursor_range_in_line_geometry_get(ln1, + cur1, cur2); } else { - tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); - rects = eina_list_append(rects, tr); - tr->x = cx; - tr->y = ly; - tr->h = lh; - tr->w = lx + lw - cx; - for (i = line +1; i < line2; i++) - { - evas_object_textblock_line_number_geometry_get(cur1->obj, i, &lx, &ly, &lw, &lh); + Evas_Object_Textblock_Line *lni; + Eina_List *rects2 = NULL; + /* Handle the first line */ + rects = _evas_textblock_cursor_range_in_line_geometry_get(ln1, + cur1, NULL); + + /* Handle the lines between the first and the last line */ + lni = (Evas_Object_Textblock_Line *) EINA_INLIST_GET(ln1)->next; + while (lni && (lni != ln2)) + { tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); rects = eina_list_append(rects, tr); - tr->x = lx; - tr->y = ly; - tr->h = lh; - tr->w = lw; - } - line = evas_textblock_cursor_char_geometry_get(cur2, &cx, &cy, &cw, &ch); - if (line < 0) - { - while (rects) - { - free(rects->data); - rects = eina_list_remove_list(rects, rects); - } - return NULL; - } - line = evas_textblock_cursor_line_geometry_get(cur2, &lx, &ly, &lw, &lh); - if (line < 0) - { - while (rects) - { - free(rects->data); - rects = eina_list_remove_list(rects, rects); - } - return NULL; - } - tr = calloc(1, sizeof(Evas_Textblock_Rectangle)); - rects = eina_list_append(rects, tr); - tr->x = lx; - tr->y = ly; - tr->h = lh; - tr->w = cx - lx; + tr->x = lni->x; + tr->y = lni->y; + tr->h = lni->h; + tr->w = lni->w; + lni = (Evas_Object_Textblock_Line *) EINA_INLIST_GET(lni)->next; + } + rects2 = _evas_textblock_cursor_range_in_line_geometry_get(ln2, + NULL, cur2); + rects = eina_list_merge(rects, rects2); } return rects; } -- 2.7.4