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Merge pull request #49799 from pycbouh/tree-lines-items-draw-order-3.x 

[3.x] Make relationship lines draw on top of `TreeItem`s
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Rémi Verschelde 2021-06-21 20:55:16 +02:00 committed by GitHub
parent f447b79bc6 b91e3237c6
commit c5058d72d0
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 27 deletions
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53
scene/gui/tree.cpp
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@ -1411,36 +1411,35 @@ int Tree::draw_item(const Point2i &p_pos, const Point2 &p_draw_ofs, const Size2
int prev_ofs = children_pos.y - cache.offset.y + p_draw_ofs.y;
while (c) {
if (cache.draw_relationship_lines > 0 && (!hide_root || c->parent != root)) {
int root_ofs = children_pos.x + ((p_item->disable_folding || hide_folding) ? cache.hseparation : cache.item_margin);
int parent_ofs = p_pos.x + ((p_item->disable_folding || hide_folding) ? cache.hseparation : cache.item_margin);
Point2i root_pos = Point2i(root_ofs, children_pos.y + label_h / 2) - cache.offset + p_draw_ofs;
if (c->get_children() != nullptr) {
root_pos -= Point2i(cache.arrow->get_width(), 0);
}
float line_width = 1.0;
#ifdef TOOLS_ENABLED
line_width *= EDSCALE;
#endif
Point2i parent_pos = Point2i(parent_ofs - cache.arrow->get_width() / 2, p_pos.y + label_h / 2 + cache.arrow->get_height() / 2) - cache.offset + p_draw_ofs;
if (root_pos.y + line_width >= 0) {
VisualServer::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);
VisualServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y), Point2i(parent_pos.x, prev_ofs), cache.relationship_line_color, line_width);
}
if (htotal < 0) {
return -1;
}
prev_ofs = root_pos.y;
}
if (htotal >= 0) {
int child_h = draw_item(children_pos, p_draw_ofs, p_draw_size, c);
// Draw relationship lines.
if (cache.draw_relationship_lines > 0 && (!hide_root || c->parent != root)) {
int root_ofs = children_pos.x + ((p_item->disable_folding || hide_folding) ? cache.hseparation : cache.item_margin);
int parent_ofs = p_pos.x + ((p_item->disable_folding || hide_folding) ? cache.hseparation : cache.item_margin);
Point2i root_pos = Point2i(root_ofs, children_pos.y + label_h / 2) - cache.offset + p_draw_ofs;
if (c->get_children() != nullptr) {
root_pos -= Point2i(cache.arrow->get_width(), 0);
}
float line_width = 1.0;
#ifdef TOOLS_ENABLED
line_width *= EDSCALE;
#endif
Point2i parent_pos = Point2i(parent_ofs - cache.arrow->get_width() / 2, p_pos.y + label_h / 2 + cache.arrow->get_height() / 2) - cache.offset + p_draw_ofs;
if (root_pos.y + line_width >= 0) {
// Order of parts on this bend: the horizontal line first, then the vertical line.
VisualServer::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);
VisualServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y), Point2i(parent_pos.x, prev_ofs), cache.relationship_line_color, line_width);
}
prev_ofs = root_pos.y;
}
if (child_h < 0) {
if (cache.draw_relationship_lines == 0) {
return -1; // break, stop drawing, no need to anymore