void Tabs::_ensure_no_over_offset() {
if (!is_inside_tree())
return;
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
while (offset > 0) {
int total_w = 0;
for (int i = 0; i < tabs.size(); i++) {
if (i < offset - 1)
continue;
total_w += get_tab_width(i);
}
if (total_w < limit) {
offset--;
update();
} else {
break;
}
}
}
void Tabs::ensure_tab_visible(int p_idx) {
if (!is_inside_tree())
return;
ERR_FAIL_INDEX(p_idx,tabs.size());
_ensure_no_over_offset();
if (p_idx<=offset) {
offset=p_idx;
update();
return;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit=get_size().width-incr->get_width()-decr->get_width();
int x=0;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
int sz = get_tab_width(i);
tabs[i].x_cache=x;
tabs[i].x_size_cache=sz;
x+=sz;
}
while(offset<tabs.size() && ( (tabs[p_idx].x_cache + tabs[p_idx].x_size_cache) - tabs[offset].x_cache) > limit) {
offset++;
}
update();
}
void Tabs::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_MOUSE_EXIT: {
rb_hover = -1;
cb_hover = -1;
hover = -1;
update();
} break;
case NOTIFICATION_RESIZED: {
_ensure_no_over_offset();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
Color color_fg = get_color("font_color_fg");
Color color_bg = get_color("font_color_bg");
Ref<Texture> close = get_icon("close");
int h = get_size().height;
int w = 0;
int mw = 0;
for (int i = 0; i < tabs.size(); i++) {
tabs[i].ofs_cache = mw;
mw += get_tab_width(i);
}
if (tab_align == ALIGN_CENTER) {
w = (get_size().width - mw) / 2;
} else if (tab_align == ALIGN_RIGHT) {
w = get_size().width - mw;
}
if (w < 0) {
w = 0;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
Ref<Texture> incr_hl = get_icon("increment_hilite");
Ref<Texture> decr_hl = get_icon("decrement_hilite");
int limit = get_size().width - incr->get_size().width - decr->get_size().width;
missing_right = false;
for (int i = 0; i < tabs.size(); i++) {
if (i < offset)
continue;
tabs[i].ofs_cache = w;
int lsize = get_tab_width(i);
String text = tabs[i].text;
int slen = font->get_string_size(text).width;
if (w + lsize > limit) {
max_drawn_tab = i - 1;
missing_right = true;
break;
} else {
max_drawn_tab = i;
}
Ref<StyleBox> sb;
Color col;
if (i == current) {
sb = tab_fg;
col = color_fg;
} else {
sb = tab_bg;
col = color_bg;
}
Rect2 sb_rect = Rect2(w, 0, lsize, h);
sb->draw(ci, sb_rect);
w += sb->get_margin(MARGIN_LEFT);
Size2i sb_ms = sb->get_minimum_size();
Ref<Texture> icon = tabs[i].icon;
if (icon.is_valid()) {
icon->draw(ci, Point2i(w, sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - icon->get_height()) / 2));
if (text != "")
w += icon->get_width() + get_constant("hseparation");
}
font->draw(ci, Point2i(w, sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - font->get_height()) / 2 + font->get_ascent()), text, col);
w += slen;
if (tabs[i].right_button.is_valid()) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> rb = tabs[i].right_button;
w += get_constant("hseparation");
Rect2 rb_rect;
rb_rect.size = style->get_minimum_size() + rb->get_size();
rb_rect.pos.x = w;
rb_rect.pos.y = sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - (rb_rect.size.y)) / 2;
if (rb_hover == i) {
if (rb_pressing)
get_stylebox("button_pressed")->draw(ci, rb_rect);
else
style->draw(ci, rb_rect);
}
rb->draw(ci, Point2i(w + style->get_margin(MARGIN_LEFT), rb_rect.pos.y + style->get_margin(MARGIN_TOP)));
w += rb->get_width();
tabs[i].rb_rect = rb_rect;
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> cb = close;
w += get_constant("hseparation");
Rect2 cb_rect;
cb_rect.size = style->get_minimum_size() + cb->get_size();
cb_rect.pos.x = w;
cb_rect.pos.y = sb->get_margin(MARGIN_TOP) + ((sb_rect.size.y - sb_ms.y) - (cb_rect.size.y)) / 2;
if (cb_hover == i) {
if (cb_pressing)
get_stylebox("button_pressed")->draw(ci, cb_rect);
else
style->draw(ci, cb_rect);
}
cb->draw(ci, Point2i(w + style->get_margin(MARGIN_LEFT), cb_rect.pos.y + style->get_margin(MARGIN_TOP)));
w += cb->get_width();
tabs[i].cb_rect = cb_rect;
}
w += sb->get_margin(MARGIN_RIGHT);
tabs[i].size_cache = w - tabs[i].ofs_cache;
}
if (offset > 0 || missing_right) {
int vofs = (get_size().height - incr->get_size().height) / 2;
if (offset > 0)
draw_texture(hilite_arrow == 0 ? decr_hl : decr, Point2(limit, vofs));
else
draw_texture(decr, Point2(limit, vofs), Color(1, 1, 1, 0.5));
if (missing_right)
draw_texture(hilite_arrow == 1 ? incr_hl : incr, Point2(limit + decr->get_size().width, vofs));
else
draw_texture(incr, Point2(limit + decr->get_size().width, vofs), Color(1, 1, 1, 0.5));
buttons_visible = true;
} else {
buttons_visible = false;
}
} break;
}
}
void Tabs::_update_cache() {
Ref<StyleBox> tab_disabled = get_stylebox("tab_disabled");
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit = get_size().width - incr->get_width() - decr->get_width();
int w = 0;
int mw = 0;
int size_fixed = 0;
int count_resize = 0;
for (int i = 0; i < tabs.size(); i++) {
tabs[i].ofs_cache = mw;
tabs[i].size_cache = get_tab_width(i);
tabs[i].size_text = font->get_string_size(tabs[i].text).width;
mw += tabs[i].size_cache;
if (tabs[i].size_cache <= min_width || i == current) {
size_fixed += tabs[i].size_cache;
} else {
count_resize++;
}
}
int m_width = min_width;
if (count_resize > 0) {
m_width = MAX((limit - size_fixed) / count_resize, min_width);
}
for (int i = 0; i < tabs.size(); i++) {
if (i < offset)
continue;
Ref<StyleBox> sb;
if (tabs[i].disabled) {
sb = tab_disabled;
} else if (i == current) {
sb = tab_fg;
} else {
sb = tab_bg;
}
int lsize = tabs[i].size_cache;
int slen = tabs[i].size_text;
if (min_width > 0 && mw > limit && i != current) {
if (lsize > m_width) {
slen = m_width - (sb->get_margin(MARGIN_LEFT) + sb->get_margin(MARGIN_RIGHT));
if (tabs[i].icon.is_valid()) {
slen -= tabs[i].icon->get_width();
slen -= get_constant("hseparation");
}
if (cb_displaypolicy == CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy == CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i == current)) {
Ref<Texture> cb = get_icon("close");
slen -= cb->get_width();
slen -= get_constant("hseparation");
}
slen = MAX(slen, 1);
lsize = m_width;
}
}
tabs[i].ofs_cache = w;
tabs[i].size_cache = lsize;
tabs[i].size_text = slen;
w += lsize;
}
}