Emit a column header (text + optional sort order) We cpu-clip text here so that all columns headers can be merged into a same draw call. Note that because of how we cpu-clip and display sorting indicators, you _cannot_ use SameLine() after a TableHeader()
| 3160 | // We cpu-clip text here so that all columns headers can be merged into a same draw call. |
| 3161 | // Note that because of how we cpu-clip and display sorting indicators, you _cannot_ use SameLine() after a TableHeader() |
| 3162 | void ImGui::TableHeader(const char* label) |
| 3163 | { |
| 3164 | ImGuiContext& g = *GImGui; |
| 3165 | ImGuiWindow* window = g.CurrentWindow; |
| 3166 | if (window->SkipItems) |
| 3167 | return; |
| 3168 | |
| 3169 | ImGuiTable* table = g.CurrentTable; |
| 3170 | IM_ASSERT_USER_ERROR_RET(table != NULL, "Call should only be done while in BeginTable() scope!"); |
| 3171 | IM_ASSERT(table->CurrentColumn != -1); |
| 3172 | const int column_n = table->CurrentColumn; |
| 3173 | ImGuiTableColumn* column = &table->Columns[column_n]; |
| 3174 | |
| 3175 | // Label |
| 3176 | if (label == NULL) |
| 3177 | label = ""; |
| 3178 | const char* label_end = FindRenderedTextEnd(label); |
| 3179 | ImVec2 label_size = CalcTextSize(label, label_end, true); |
| 3180 | ImVec2 label_pos = window->DC.CursorPos; |
| 3181 | |
| 3182 | // If we already got a row height, there's use that. |
| 3183 | // FIXME-TABLE: Padding problem if the correct outer-padding CellBgRect strays off our ClipRect? |
| 3184 | ImRect cell_r = TableGetCellBgRect(table, column_n); |
| 3185 | float label_height = ImMax(label_size.y, table->RowMinHeight - table->RowCellPaddingY * 2.0f); |
| 3186 | |
| 3187 | // Calculate ideal size for sort order arrow |
| 3188 | float w_arrow = 0.0f; |
| 3189 | float w_sort_text = 0.0f; |
| 3190 | bool sort_arrow = false; |
| 3191 | char sort_order_suf[4] = ""; |
| 3192 | const float ARROW_SCALE = 0.65f; |
| 3193 | if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort)) |
| 3194 | { |
| 3195 | w_arrow = ImTrunc(g.FontSize * ARROW_SCALE + g.Style.FramePadding.x); |
| 3196 | if (column->SortOrder != -1) |
| 3197 | sort_arrow = true; |
| 3198 | if (column->SortOrder > 0) |
| 3199 | { |
| 3200 | ImFormatString(sort_order_suf, IM_COUNTOF(sort_order_suf), "%d", column->SortOrder + 1); |
| 3201 | w_sort_text = g.Style.ItemInnerSpacing.x + CalcTextSize(sort_order_suf).x; |
| 3202 | } |
| 3203 | } |
| 3204 | |
| 3205 | // We feed our unclipped width to the column without writing on CursorMaxPos, so that column is still considered for merging. |
| 3206 | float max_pos_x = label_pos.x + label_size.x + w_sort_text + w_arrow; |
| 3207 | column->ContentMaxXHeadersUsed = ImMax(column->ContentMaxXHeadersUsed, sort_arrow ? cell_r.Max.x : ImMin(max_pos_x, cell_r.Max.x)); |
| 3208 | column->ContentMaxXHeadersIdeal = ImMax(column->ContentMaxXHeadersIdeal, max_pos_x); |
| 3209 | |
| 3210 | // Keep header highlighted when context menu is open. |
| 3211 | ImGuiID id = window->GetID(label); |
| 3212 | ImRect bb(cell_r.Min.x, cell_r.Min.y, cell_r.Max.x, ImMax(cell_r.Max.y, cell_r.Min.y + label_height + g.Style.CellPadding.y * 2.0f)); |
| 3213 | ItemSize(ImVec2(0.0f, label_height)); // Don't declare unclipped width, it'll be fed ContentMaxPosHeadersIdeal |
| 3214 | if (!ItemAdd(bb, id)) |
| 3215 | return; |
| 3216 | |
| 3217 | //GetForegroundDrawList()->AddRect(cell_r.Min, cell_r.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG] |
| 3218 | //GetForegroundDrawList()->AddRect(bb.Min, bb.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG] |
| 3219 |
nothing calls this directly
no test coverage detected