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Fix disappearing relationship lines in Tree when item is out of view #49085

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merged 1 commit into from
May 25, 2021
Merged

Fix disappearing relationship lines in Tree when item is out of view #49085

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10 changes: 8 additions & 2 deletions scene/gui/tree.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1865,18 +1865,24 @@ int Tree::draw_item(const Point2i &p_pos, const Point2 &p_draw_ofs, const Size2
prev_hl_ofs = root_pos.y + Math::floor(parent_line_width / 2);
} else if (p_item->is_selected(0)) {
// If parent item is selected (but this item is not), we draw the line using children highlight style.
// Siblings of the selected branch can be drawn with a slight offset (and also don't need a vertical line).
// Siblings of the selected branch can be drawn with a slight offset and their vertical line must appear as highlighted.
if (_is_sibling_branch_selected(c)) {
RenderingServer::get_singleton()->canvas_item_add_line(ci, root_pos, Point2i(parent_pos.x + Math::floor(parent_line_width / 2), root_pos.y), cache.children_hl_line_color, children_line_width);
RenderingServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y + Math::floor(parent_line_width / 2)), Point2i(parent_pos.x, prev_hl_ofs), cache.parent_hl_line_color, parent_line_width);

prev_hl_ofs = root_pos.y + Math::floor(parent_line_width / 2);
} else {
RenderingServer::get_singleton()->canvas_item_add_line(ci, root_pos, Point2i(parent_pos.x + Math::floor(children_line_width / 2), root_pos.y), cache.children_hl_line_color, children_line_width);
RenderingServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y + Math::floor(children_line_width / 2)), Point2i(parent_pos.x, prev_ofs + Math::floor(children_line_width / 2)), cache.children_hl_line_color, children_line_width);
}
} else {
// If nothing of the above is true, we draw the line using normal style.
// Siblings of the selected branch can be drawn with a slight offset (and also don't need a vertical line).
// Siblings of the selected branch can be drawn with a slight offset and their vertical line must appear as highlighted.
if (_is_sibling_branch_selected(c)) {
RenderingServer::get_singleton()->canvas_item_add_line(ci, root_pos, Point2i(parent_pos.x + cache.parent_hl_line_margin, root_pos.y), cache.relationship_line_color, line_width);
RenderingServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y + Math::floor(parent_line_width / 2)), Point2i(parent_pos.x, prev_hl_ofs), cache.parent_hl_line_color, parent_line_width);

prev_hl_ofs = root_pos.y + Math::floor(parent_line_width / 2);
} else {
RenderingServer::get_singleton()->canvas_item_add_line(ci, root_pos, Point2i(parent_pos.x + Math::floor(line_width / 2), root_pos.y), cache.relationship_line_color, line_width);
RenderingServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y + Math::floor(line_width / 2)), Point2i(parent_pos.x, prev_ofs + Math::floor(line_width / 2)), cache.relationship_line_color, line_width);
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