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TreeNode: Reworded code for ImGuiTreeNodeFlags_OpenOnArrow (follow up to f79b2d6c
) to make it lightweight. Should be a no-op from user's point of view. Will facilitate using the arrow hovering information in the hot path. (#2886)
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@ -5287,13 +5287,15 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
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{
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if (pressed)
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{
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const float arrow_x1 = text_pos.x - text_offset_x;
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const float arrow_x2 = arrow_x1 + g.FontSize + padding.x * 2.0f;
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toggled = !(flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) || (g.NavActivateId == id);
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const float hit_padding_x = style.TouchExtraPadding.x;
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const float arrow_hit_x1 = (text_pos.x - text_offset_x) - hit_padding_x;
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const float arrow_hit_x2 = (text_pos.x - text_offset_x) + (g.FontSize + padding.x * 2.0f) + hit_padding_x;
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if (flags & ImGuiTreeNodeFlags_OpenOnArrow)
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toggled |= IsMouseHoveringRect(ImVec2(arrow_x1, interact_bb.Min.y), ImVec2(arrow_x2, interact_bb.Max.y)) && (!g.NavDisableMouseHover);
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if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
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toggled |= g.IO.MouseDoubleClicked[0];
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toggled |= (g.IO.MousePos.x >= arrow_hit_x1 && g.IO.MousePos.x < arrow_hit_x2) && (!g.NavDisableMouseHover); // Lightweight equivalent of IsMouseHoveringRect() since ButtonBehavior() already did the job
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if ((flags & (ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick)) == 0 || (g.NavActivateId == id))
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toggled = true;
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if ((flags & ImGuiTreeNodeFlags_OpenOnDoubleClick) && g.IO.MouseDoubleClicked[0])
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toggled = true;
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if (g.DragDropActive && is_open) // When using Drag and Drop "hold to open" we keep the node highlighted after opening, but never close it again.
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toggled = false;
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}
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