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TreeNode: extracted TreeNodeDrawLineToChildNode() for usage by custom widgets (#2920)

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ocornut
2025-04-09 12:04:09 +02:00
parent 39f34e1e58
commit 789de09dda
5 changed files with 29 additions and 16 deletions
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30
imgui_widgets.cpp
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@@ -6822,17 +6822,8 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
LogSetNextTextDecoration(">", NULL);
}
if (draw_tree_lines && (window->DC.TreeHasStackDataDepthMask & (1 << (window->DC.TreeDepth - 1))))
{
// Draw horizontal line from our parent node
ImGuiTreeNodeStackData* parent_data = &g.TreeNodeStack.Data[g.TreeNodeStack.Size - 1];
float x1 = parent_data->DrawLinesX1 + ImTrunc(g.FontSize * 0.5f + g.Style.FramePadding.x); // GetTreeNodeToLabelSpacing() * 0.5f
float x2 = text_pos.x - text_offset_x;
float y = text_pos.y + ImTrunc(g.FontSize * 0.5f);
parent_data->DrawLinesY2 = ImMax(parent_data->DrawLinesY2, y);
if (x1 < x2)
window->DrawList->AddLine(ImVec2(x1, y), ImVec2(x2, y), GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
}
if (draw_tree_lines)
TreeNodeDrawLineToChildNode(ImVec2(text_pos.x - text_offset_x, text_pos.y + g.FontSize * 0.5f));
if (span_all_columns && !span_all_columns_label)
TablePopBackgroundChannel();
@@ -6856,6 +6847,23 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
return is_open;
}
// Draw horizontal line from our parent node
// This is only called for visible child nodes so we are not too fussy anymore about performances
void ImGui::TreeNodeDrawLineToChildNode(const ImVec2& target_pos)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
if ((window->DC.TreeHasStackDataDepthMask & (1 << (window->DC.TreeDepth - 1))) == 0)
return;
ImGuiTreeNodeStackData* parent_data = &g.TreeNodeStack.Data[g.TreeNodeStack.Size - 1];
float x1 = parent_data->DrawLinesX1 + ImTrunc(g.FontSize * 0.5f + g.Style.FramePadding.x); // GetTreeNodeToLabelSpacing() * 0.5f
float y = ImTrunc(target_pos.y);
parent_data->DrawLinesY2 = ImMax(parent_data->DrawLinesY2, y);
if (x1 < target_pos.x)
window->DrawList->AddLine(ImVec2(x1, y), ImVec2(target_pos.x, y), GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
}
void ImGui::TreePush(const char* str_id)
{
ImGuiWindow* window = GetCurrentWindow();