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https://github.com/rkd77/elinks.git
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Added support for correctly displaying double-width UTF-8 chars in buttons.
With UTF-8 support in terminal enabled it is possible to use double-width UTF-8 strings as margins of buttons. Although they are displayed wrong when UTF-8 support in terminal is disabled.
This commit is contained in:
Pavol Babincak
Pavol Babincak
parent
38db20b776
commit
dfe029bc27
135
src/bfu/button.c
135
src/bfu/button.c
@ -77,17 +77,34 @@ add_dlg_button_do(struct dialog *dlg, unsigned char *text, int flags,
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}
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}
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#ifdef CONFIG_UTF_8
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static void
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buttons_width(struct widget_data *widget_data, int n,
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int *minwidth, int *maxwidth, int utf8)
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#else
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static void
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buttons_width(struct widget_data *widget_data, int n,
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int *minwidth, int *maxwidth)
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#endif /* CONFIG_UTF_8 */
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{
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int maxw = -BUTTON_HSPACING;
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#ifdef CONFIG_UTF_8
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int button_lr_len = utf8_ptr2cells(BUTTON_LEFT, NULL)
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+ utf8_ptr2cells(BUTTON_RIGHT, NULL);
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#endif /* CONFIG_UTF_8 */
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assert(n > 0);
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if_assert_failed return;
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while (n--) {
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int minw = (widget_data++)->widget->info.button.textlen
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int minw;
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#ifdef CONFIG_UTF_8
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if (utf8)
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minw = utf8_ptr2cells((widget_data++)->widget->text, NULL)
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+ BUTTON_HSPACING + button_lr_len;
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else
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#endif /* CONFIG_UTF_8 */
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minw = (widget_data++)->widget->info.button.textlen
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+ BUTTON_HSPACING + BUTTON_LR_LEN;
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maxw += minw;
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@ -111,24 +128,45 @@ dlg_format_buttons(struct terminal *term,
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while (i2 < n) {
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mw = 0;
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#ifdef CONFIG_UTF_8
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buttons_width(widget_data1, i2 - i1 + 1, NULL, &mw,
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term->utf8);
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#else
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buttons_width(widget_data1, i2 - i1 + 1, NULL, &mw);
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#endif /* CONFIG_UTF_8 */
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if (mw <= w) i2++;
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else break;
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}
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mw = 0;
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#ifdef CONFIG_UTF_8
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buttons_width(widget_data1, i2 - i1, NULL, &mw, term->utf8);
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#else
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buttons_width(widget_data1, i2 - i1, NULL, &mw);
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#endif /* CONFIG_UTF_8 */
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if (rw) int_bounds(rw, mw, w);
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if (!format_only) {
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int i;
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int p = x + (align == ALIGN_CENTER ? (w - mw) / 2 : 0);
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#ifdef CONFIG_UTF_8
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int button_lr_len = utf8_ptr2cells(BUTTON_LEFT, NULL)
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+ utf8_ptr2cells(BUTTON_RIGHT, NULL);
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#endif /* CONFIG_UTF_8 */
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for (i = i1; i < i2; i++) {
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set_box(&widget_data[i].box,
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p, *y,
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widget_data[i].widget->info.button.textlen
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+ BUTTON_LR_LEN, BUTTON_HEIGHT);
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#ifdef CONFIG_UTF_8
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if (term->utf8)
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set_box(&widget_data[i].box,
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p, *y,
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utf8_ptr2cells(widget_data[i].widget->text, NULL)
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+ button_lr_len, BUTTON_HEIGHT);
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else
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#endif /* CONFIG_UTF_8 */
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set_box(&widget_data[i].box,
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p, *y,
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widget_data[i].widget->info.button.textlen
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+ BUTTON_LR_LEN, BUTTON_HEIGHT);
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p += widget_data[i].box.width + BUTTON_HSPACING;
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}
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@ -145,8 +183,7 @@ display_button(struct dialog_data *dlg_data, struct widget_data *widget_data)
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struct terminal *term = dlg_data->win->term;
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struct color_pair *color, *shortcut_color;
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struct box *pos = &widget_data->box;
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int len = widget_data->box.width - BUTTON_LR_LEN;
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int x = pos->x + BUTTON_LEFT_LEN;
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int len, x;
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int sel = is_selected_widget(dlg_data, widget_data);
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if (sel) {
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@ -158,6 +195,23 @@ display_button(struct dialog_data *dlg_data, struct widget_data *widget_data)
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}
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if (!color || !shortcut_color) return EVENT_PROCESSED;
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#ifdef CONFIG_UTF_8
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if (term->utf8) {
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int button_left_len = utf8_ptr2cells(BUTTON_LEFT, NULL);
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int button_right_len = utf8_ptr2cells(BUTTON_RIGHT, NULL);
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x = pos->x + button_left_len;
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len = widget_data->box.width -
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(button_left_len + button_right_len);
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} else
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#endif /* CONFIG_UTF_8 */
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{
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x = pos->x + BUTTON_LEFT_LEN;
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len = widget_data->box.width - BUTTON_LR_LEN;
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}
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draw_text(term, pos->x, pos->y, BUTTON_LEFT, BUTTON_LEFT_LEN, 0, color);
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if (len > 0) {
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unsigned char *text = widget_data->widget->text;
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@ -169,30 +223,48 @@ display_button(struct dialog_data *dlg_data, struct widget_data *widget_data)
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#ifdef CONFIG_UTF_8
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if (term->utf8) {
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unsigned char *text2 = text;
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unsigned char *end = text
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+ widget_data->widget->info.button.truetextlen;
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int hk_state = 0;
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int x1;
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if (hk_pos >= 0) {
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int hk_bytes = utf8charlen(&text[hk_pos+1]);
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int cells_to_hk = utf8_ptr2cells(text,
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&text[hk_pos]);
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int right = widget_data->widget->info.button.truetextlen
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- hk_pos
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- hk_bytes;
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for (x1 = 0; x1 - !!hk_state < len && *text2; x1++) {
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uint16_t data;
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int hk_cells = utf8_char2cells(&text[hk_pos
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+ 1],
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NULL);
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data = (uint16_t)utf_8_to_unicode(&text2, end);
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if (!hk_state && (int)(text2 - text) == hk_pos + 1) {
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hk_state = 1;
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continue;
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}
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if (hk_state == 1) {
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draw_char(term, x + x1 - 1, pos->y, data, attr, shortcut_color);
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hk_state = 2;
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} else {
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draw_char(term, x + x1 - !!hk_state, pos->y, data, 0, color);
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}
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if (hk_pos)
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draw_text(term, x, pos->y,
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text, hk_pos, 0, color);
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draw_text(term, x + cells_to_hk, pos->y,
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&text[hk_pos + 1], hk_bytes,
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attr, shortcut_color);
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if (right > 1)
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draw_text(term, x+cells_to_hk+hk_cells,
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pos->y,
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&text[hk_pos + hk_bytes + 1],
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right - 1, 0, color);
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} else {
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int hk_width = utf8_char2cells(text, NULL);
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int hk_len = utf8charlen(text);
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int len_to_display =
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utf8_cells2bytes(&text[hk_len],
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len - hk_width,
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NULL);
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draw_text(term, x, pos->y,
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text, hk_len,
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attr, shortcut_color);
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draw_text(term, x + hk_width, pos->y,
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&text[hk_len], len_to_display,
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0, color);
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}
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len = x1 - !!hk_state;
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} else
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#endif /* CONFIG_UTF_8 */
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if (hk_pos >= 0) {
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@ -213,8 +285,17 @@ display_button(struct dialog_data *dlg_data, struct widget_data *widget_data)
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draw_text(term, x + 1, pos->y, &text[1], len - 1, 0, color);
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}
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}
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draw_text(term, x + len, pos->y, BUTTON_RIGHT, BUTTON_RIGHT_LEN, 0, color);
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#ifdef CONFIG_UTF_8
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if (term->utf8) {
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int text_cells = utf8_ptr2cells(widget_data->widget->text, NULL);
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int hk = (widget_data->widget->info.button.hotkey_pos >= 0);
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draw_text(term, x + text_cells - hk, pos->y,
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BUTTON_RIGHT, BUTTON_RIGHT_LEN, 0, color);
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} else
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#endif /* CONFIG_UTF_8 */
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draw_text(term, x + len, pos->y, BUTTON_RIGHT,
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BUTTON_RIGHT_LEN, 0, color);
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if (sel) {
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set_cursor(term, x, pos->y, 1);
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set_window_ptr(dlg_data->win, pos->x, pos->y);
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