From 892b48e2d61f1ee216ea852ad01e83e239385873 Mon Sep 17 00:00:00 2001 From: ocornut Date: Mon, 14 Dec 2020 19:24:48 +0100 Subject: [PATCH] Tables: Lock contents width while resizing down an horizontal scrolling table. Headers declare ideal width regardless of clipping. Misc comments. --- imgui.h | 6 ++--- imgui_internal.h | 1 + imgui_tables.cpp | 63 +++++++++++++++++++++++++++--------------------- 3 files changed, 39 insertions(+), 31 deletions(-) diff --git a/imgui.h b/imgui.h index 57b87ad6..bf836a75 100644 --- a/imgui.h +++ b/imgui.h @@ -60,7 +60,7 @@ Index of this file: // Version // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens) #define IMGUI_VERSION "1.80 WIP" -#define IMGUI_VERSION_NUM 17906 +#define IMGUI_VERSION_NUM 17907 #define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx)) #define IMGUI_HAS_TABLE @@ -1037,8 +1037,8 @@ enum ImGuiTabItemFlags_ // When ScrollX is off: // - Table defaults to ImGuiTableFlags_ColumnsWidthStretch -> all Columns defaults to ImGuiTableColumnFlags_WidthStretch. // - Columns sizing policy allowed: Stretch (default) or Fixed/Auto. -// - Stretch Columns will share the width available in table. -// - Fixed Columns will generally obtain their requested width unless the Table cannot fit them all. +// - Fixed Columns will generally obtain their requested width (unless the Table cannot fit them all). +// - Stretch Columns will share the remaining width. // When ScrollX is on: // - Table defaults to ImGuiTableFlags_ColumnsWidthFixed -> all Columns defaults to ImGuiTableColumnFlags_WidthFixed. // - Columns sizing policy allowed: Fixed/Auto mostly! diff --git a/imgui_internal.h b/imgui_internal.h index 295226c1..cd10cfeb 100644 --- a/imgui_internal.h +++ b/imgui_internal.h @@ -2012,6 +2012,7 @@ struct ImGuiTable float ColumnsTotalWidth; // Sum of current column width float ColumnsAutoFitWidth; // Sum of ideal column width in order nothing to be clipped, used for auto-fitting and content width submission in outer window float ResizedColumnNextWidth; + float ResizeLockMinContentsX2; // Lock minimum contents width while resizing down in order to not create feedback loops. But we allow growing the table. float RefScale; // Reference scale to be able to rescale columns on font/dpi changes. ImRect OuterRect; // Note: OuterRect.Max.y is often FLT_MAX until EndTable(), unless a height has been specified in BeginTable(). ImRect WorkRect; diff --git a/imgui_tables.cpp b/imgui_tables.cpp index 6d9530a4..261ebf0a 100644 --- a/imgui_tables.cpp +++ b/imgui_tables.cpp @@ -492,8 +492,7 @@ void ImGui::TableBeginApplyRequests(ImGuiTable* table) { // Handle resizing request // (We process this at the first TableBegin of the frame) - // FIXME-TABLE: Preserve contents width _while resizing down_ until releasing. - // FIXME-TABLE: Contains columns if our work area doesn't allow for scrolling. + // FIXME-TABLE: Contains columns if our work area doesn't allow for scrolling? if (table->InstanceCurrent == 0) { if (table->ResizedColumn != -1 && table->ResizedColumnNextWidth != FLT_MAX) @@ -691,6 +690,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table) if ((table->Flags & ImGuiTableFlags_Sortable) && table->SortSpecsCount == 0 && !(table->Flags & ImGuiTableFlags_SortTristate)) table->IsSortSpecsDirty = true; table->RightMostEnabledColumn = (ImGuiTableColumnIdx)last_visible_column_idx; + IM_ASSERT(table->RightMostEnabledColumn >= 0); // [Part 2] Disable child window clipping while fitting columns. This is not strictly necessary but makes it possible // to avoid the column fitting to wait until the first visible frame of the child container (may or not be a good thing). @@ -1014,9 +1014,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table) // because of using _WidthAutoResize/_WidthStretch). This will hide the resizing option from the context menu. if (is_hovering_table && table->HoveredColumnBody == -1) { - float unused_x1 = table->WorkRect.Min.x; - if (table->RightMostEnabledColumn != -1) - unused_x1 = ImMax(unused_x1, table->Columns[table->RightMostEnabledColumn].ClipRect.Max.x); + float unused_x1 = ImMax(table->WorkRect.Min.x, table->Columns[table->RightMostEnabledColumn].ClipRect.Max.x); if (g.IO.MousePos.x >= unused_x1) table->HoveredColumnBody = (ImGuiTableColumnIdx)table->ColumnsCount; } @@ -1109,6 +1107,8 @@ void ImGui::TableUpdateBorders(ImGuiTable* table) } if (held) { + if (table->LastResizedColumn == -1) + table->ResizeLockMinContentsX2 = table->RightMostEnabledColumn != -1 ? table->Columns[table->RightMostEnabledColumn].MaxX : -FLT_MAX; table->ResizedColumn = (ImGuiTableColumnIdx)column_n; table->InstanceInteracted = table->InstanceCurrent; } @@ -1182,6 +1182,8 @@ void ImGui::EndTable() float max_pos_x = backup_inner_max_pos_x; if (table->RightMostEnabledColumn != -1) max_pos_x = ImMax(max_pos_x, table->Columns[table->RightMostEnabledColumn].MaxX); + if (table->ResizedColumn != -1) + max_pos_x = ImMax(max_pos_x, table->ResizeLockMinContentsX2); #if 0 // Strip out dummy channel draw calls @@ -1861,7 +1863,12 @@ void ImGui::TableSetColumnWidth(int column_n, float width) ImGuiTableColumn* column_1 = (column_0->NextEnabledColumn != -1) ? &table->Columns[column_0->NextEnabledColumn] : NULL; - // In this surprisingly not simple because of how we support mixing Fixed and Stretch columns. + // In this surprisingly not simple because of how we support mixing Fixed and multiple Stretch columns. + // - All fixed: easy. + // - All stretch: easy. + // - One or more fixed + one stretch: easy. + // - One or more fixed + more than one stretch: A MESS + // When forwarding resize from Wn| to Fn+1| we need to be considerate of the _NoResize flag on Fn+1. // FIXME-TABLE: Find a way to rewrite all of this so interactions feel more consistent for the user. // Scenarios: @@ -2638,6 +2645,26 @@ void ImGui::TableHeader(const char* label) ImRect cell_r = TableGetCellBgRect(table, column_n); float label_height = ImMax(label_size.y, table->RowMinHeight - table->CellPaddingY * 2.0f); + // Calculate ideal size for sort order arrow + float w_arrow = 0.0f; + float w_sort_text = 0.0f; + char sort_order_suf[4] = ""; + const float ARROW_SCALE = 0.65f; + if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort)) + { + w_arrow = ImFloor(g.FontSize * ARROW_SCALE + g.Style.FramePadding.x);// table->CellPadding.x); + if (column->SortOrder > 0) + { + ImFormatString(sort_order_suf, IM_ARRAYSIZE(sort_order_suf), "%d", column->SortOrder + 1); + w_sort_text = g.Style.ItemInnerSpacing.x + CalcTextSize(sort_order_suf).x; + } + } + + // We feed our unclipped width to the column without writing on CursorMaxPos, so that column is still considering for merging. + float max_pos_x = label_pos.x + label_size.x + w_sort_text + w_arrow; + column->ContentMaxXHeadersUsed = ImMax(column->ContentMaxXHeadersUsed, column->WorkMaxX); + column->ContentMaxXHeadersIdeal = ImMax(column->ContentMaxXHeadersIdeal, max_pos_x); + // Keep header highlighted when context menu is open. const bool selected = (table->IsContextPopupOpen && table->ContextPopupColumn == column_n && table->InstanceInteracted == table->InstanceCurrent); ImGuiID id = window->GetID(label); @@ -2692,28 +2719,13 @@ void ImGui::TableHeader(const char* label) } // Sort order arrow - float w_arrow = 0.0f; - float w_sort_text = 0.0f; - float ellipsis_max = cell_r.Max.x; + const float ellipsis_max = cell_r.Max.x - w_arrow - w_sort_text; if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort)) { - const float ARROW_SCALE = 0.65f; - w_arrow = ImFloor(g.FontSize * ARROW_SCALE + g.Style.FramePadding.x);// table->CellPadding.x); if (column->SortOrder != -1) { - char sort_order_suf[8]; - w_sort_text = 0.0f; - if (column->SortOrder > 0) - { - ImFormatString(sort_order_suf, IM_ARRAYSIZE(sort_order_suf), "%d", column->SortOrder + 1); - w_sort_text = g.Style.ItemInnerSpacing.x + CalcTextSize(sort_order_suf).x; - } - float x = ImMax(cell_r.Min.x, cell_r.Max.x - w_arrow - w_sort_text); - ellipsis_max -= w_arrow + w_sort_text; - float y = label_pos.y; - ImU32 col = GetColorU32(ImGuiCol_Text); if (column->SortOrder > 0) { PushStyleColor(ImGuiCol_Text, GetColorU32(ImGuiCol_Text, 0.70f)); @@ -2721,7 +2733,7 @@ void ImGui::TableHeader(const char* label) PopStyleColor(); x += w_sort_text; } - RenderArrow(window->DrawList, ImVec2(x, y), col, column->SortDirection == ImGuiSortDirection_Ascending ? ImGuiDir_Up : ImGuiDir_Down, ARROW_SCALE); + RenderArrow(window->DrawList, ImVec2(x, y), GetColorU32(ImGuiCol_Text), column->SortDirection == ImGuiSortDirection_Ascending ? ImGuiDir_Up : ImGuiDir_Down, ARROW_SCALE); } // Handle clicking on column header to adjust Sort Order @@ -2741,11 +2753,6 @@ void ImGui::TableHeader(const char* label) if (text_clipped && hovered && g.HoveredIdNotActiveTimer > g.TooltipSlowDelay) SetTooltip("%.*s", (int)(label_end - label), label); - // We feed our unclipped width to the column without writing on CursorMaxPos, so that column is still considering for merging. - float max_pos_x = label_pos.x + label_size.x + w_sort_text + w_arrow; - column->ContentMaxXHeadersUsed = ImMax(column->ContentMaxXHeadersUsed, column->WorkMaxX); - column->ContentMaxXHeadersIdeal = ImMax(column->ContentMaxXHeadersIdeal, max_pos_x); - // We don't use BeginPopupContextItem() because we want the popup to stay up even after the column is hidden if (IsMouseReleased(1) && IsItemHovered()) TableOpenContextMenu(column_n);