Tables: changelog. removed TableGetHoveredColumn() from public API in favor of using TableGetColumnFlags(). renamed ImGuiTableSortSpecsColumn to ImGuiTableColumnSortSpecs.

docs/CHANGELOG.txt

@@ -59,6 +59,18 @@ Breaking Changes:
 
 Other Changes:
 
+- Tables: added new Tables Beta API as a replacement for old Columns. (#2957, #125)
+  Check out 'Demo->Tables' for many demos + API comments in imgui.h for details.
+  - Added 16 functions: BeginTable(), EndTable(), 
+                        TableNextRow(), TableNextColumn(), TableSetColumnIndex(), TableGetColumnIndex(), TableGetRowIndex(), 
+                        TableSetupColumn(), TableSetupScrollFreeze(),
+                        TableHeadersRow(), TableHeader(), TableSetBgColor(), TableGetSortSpecs(),
+                        TableGetColumnCount(), TableGetColumnName(), TableGetColumnFlags().
+  - Added 2 structures: ImGuiTableSortSpecs, ImGuiTableColumnSortSpecs.
+  - Added 2 enums:      ImGuiSortDirection, ImGuiTableBgTarget.
+  - Added 3 flags sets: ImGuiTableFlags (27 flags), ImGuiTableColumnFlags (24 flags), ImGuiTableRowFlags (1 flags).
+  - Added 5 colors:     ImGuiCol_TableHeaderBg, ImGuiCol_TableBorderStrong, ImGuiCol_TableBorderLight, ImGuiCol_TableRowBg, ImGuiCol_TableRowBgAlt.
+  - Added 1 style var:  ImGuiStyleVar_CellPadding.
 - Tab Bar: Made it possible to append to an existing tab bar by calling BeginTabBar()/EndTabBar() again.
 - Tab Bar: Fixed using more than 128 tabs in a tab bar (scrolling policy recommended).
 - Tab Bar: Do not display a tooltip if the name already fits over a given tab. (#3521)

imgui.h

@@ -33,7 +33,7 @@ Index of this file:
 // Draw List API (ImDrawCallback, ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawListFlags, ImDrawList, ImDrawData)
 // Font API (ImFontConfig, ImFontGlyph, ImFontGlyphRangesBuilder, ImFontAtlasFlags, ImFontAtlas, ImFont)
 
-// FIXME-TABLE: Add ImGuiTableSortSpecsColumn and ImGuiTableSortSpecs in "Misc data structures" section above (we don't do it right now to facilitate merging various branches)
+// FIXME-TABLE: Add ImGuiTableSortSpecs and ImGuiTableColumnSortSpecs in "Misc data structures" section above (we don't do it right now to facilitate merging various branches)
 
 */
 
@@ -139,7 +139,7 @@ struct ImGuiSizeCallbackData;       // Callback data when using SetNextWindowSiz
 struct ImGuiStorage;                // Helper for key->value storage
 struct ImGuiStyle;                  // Runtime data for styling/colors
 struct ImGuiTableSortSpecs;         // Sorting specifications for a table (often handling sort specs for a single column, occasionally more)
-struct ImGuiTableSortSpecsColumn;   // Sorting specification for one column of a table
+struct ImGuiTableColumnSortSpecs;   // Sorting specification for one column of a table
 struct ImGuiTextBuffer;             // Helper to hold and append into a text buffer (~string builder)
 struct ImGuiTextFilter;             // Helper to parse and apply text filters (e.g. "aaaaa[,bbbbb][,ccccc]")
 
@@ -653,7 +653,7 @@ namespace ImGui
     IMGUI_API bool          IsPopupOpen(const char* str_id, ImGuiPopupFlags flags = 0);                         // return true if the popup is open.
 
     // Tables
-    // [ALPHA API] API may evolve!
+    // [BETA API] API may evolve!
     // - Full-featured replacement for old Columns API.
     // - See Demo->Tables for details.
     // - See ImGuiTableFlags_ and ImGuiTableColumnFlags_ enums for a description of available flags.
@@ -708,7 +708,6 @@ namespace ImGui
     IMGUI_API int                   TableGetColumnCount();                      // return number of columns (value passed to BeginTable)
     IMGUI_API const char*           TableGetColumnName(int column_n = -1);      // return "" if column didn't have a name declared by TableSetupColumn(). Pass -1 to use current column.
     IMGUI_API ImGuiTableColumnFlags TableGetColumnFlags(int column_n = -1);     // return column flags so you can query their Enabled/Visible/Sorted/Hovered status flags.
-    IMGUI_API int                   TableGetHoveredColumn();                    // return hovered column. return -1 when table is not hovered. return columns_count if the unused space at the right of visible columns is hovered.
     IMGUI_API ImGuiTableSortSpecs*  TableGetSortSpecs();                        // get latest sort specs for the table (NULL if not sorting).
     IMGUI_API void                  TableSetBgColor(ImGuiTableBgTarget bg_target, ImU32 color, int column_n = -1);  // change the color of a cell, row, or column. See ImGuiTableBgTarget_ flags for details.
 
@@ -1903,14 +1902,14 @@ struct ImGuiPayload
 };
 
 // Sorting specification for one column of a table (sizeof == 12 bytes)
-struct ImGuiTableSortSpecsColumn
+struct ImGuiTableColumnSortSpecs
 {
     ImGuiID                     ColumnUserID;       // User id of the column (if specified by a TableSetupColumn() call)
     ImS16                       ColumnIndex;        // Index of the column
     ImS16                       SortOrder;          // Index within parent ImGuiTableSortSpecs (always stored in order starting from 0, tables sorted on a single criteria will always have a 0 here)
     ImGuiSortDirection          SortDirection : 8;  // ImGuiSortDirection_Ascending or ImGuiSortDirection_Descending (you can use this or SortSign, whichever is more convenient for your sort function)
 
-    ImGuiTableSortSpecsColumn() { memset(this, 0, sizeof(*this)); }
+    ImGuiTableColumnSortSpecs() { memset(this, 0, sizeof(*this)); }
 };
 
 // Sorting specifications for a table (often handling sort specs for a single column, occasionally more)
@@ -1919,7 +1918,7 @@ struct ImGuiTableSortSpecsColumn
 // Make sure to set 'SpecsDirty = false' after sorting, else you may wastefully sort your data every frame!
 struct ImGuiTableSortSpecs
 {
-    const ImGuiTableSortSpecsColumn* Specs;     // Pointer to sort spec array.
+    const ImGuiTableColumnSortSpecs* Specs;     // Pointer to sort spec array.
     int                         SpecsCount;     // Sort spec count. Most often 1 unless e.g. ImGuiTableFlags_MultiSortable is enabled.
     bool                        SpecsDirty;     // Set to true when specs have changed since last time! Use this to sort again, then clear the flag.
 

imgui_demo.cpp

@@ -38,12 +38,21 @@
 //   and require you either enable those, either provide your own via IM_VEC2_CLASS_EXTRA in imconfig.h.
 //   Because we can't assume anything about your support of maths operators, we cannot use them in imgui_demo.cpp.
 
+// Navigating this file:
+// - In Visual Studio IDE: CTRL+comma ("Edit.NavigateTo") can follow symbols in comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
+// - With Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols in comments.
+
 /*
 
 Index of this file:
 
 // [SECTION] Forward Declarations, Helpers
 // [SECTION] Demo Window / ShowDemoWindow()
+// - sub section: ShowDemoWindowWidgets()
+// - sub section: ShowDemoWindowLayout()
+// - sub section: ShowDemoWindowPopups()
+// - sub section: ShowDemoWindowTables()
+// - sub section: ShowDemoWindowMisc()
 // [SECTION] About Window / ShowAboutWindow()
 // [SECTION] Style Editor / ShowStyleEditor()
 // [SECTION] Example App: Main Menu Bar / ShowExampleAppMainMenuBar()
@@ -3303,7 +3312,7 @@ struct MyItem
         {
             // Here we identify columns using the ColumnUserID value that we ourselves passed to TableSetupColumn()
             // We could also choose to identify columns based on their index (sort_spec->ColumnIndex), which is simpler!
-            const ImGuiTableSortSpecsColumn* sort_spec = &s_current_sort_specs->Specs[n];
+            const ImGuiTableColumnSortSpecs* sort_spec = &s_current_sort_specs->Specs[n];
             int delta = 0;
             switch (sort_spec->ColumnUserID)
             {
@@ -3755,7 +3764,7 @@ static void ShowDemoWindowTables()
                         sprintf(buf, "Hello %d,%d", column, row);
                         ImGui::Button(buf, ImVec2(-FLT_MIN, 0.0f));
                     }
-                    //if (ImGui::TableGetHoveredColumn() == column)
+                    //if (ImGui::TableGetColumnFlags() & ImGuiTableColumnFlags_IsHovered)
                     //    ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg, IM_COL32(0, 100, 0, 255));
                 }
             }
@@ -4460,10 +4469,12 @@ static void ShowDemoWindowTables()
             // [2.3] Right-click anywhere in columns to open another custom popup
             // (instead of testing for !IsAnyItemHovered() we could also call OpenPopup() with ImGuiPopupFlags_NoOpenOverExistingPopup
             // to manage popup priority as the popups triggers, here "are we hovering a column" are overlapping)
-            const int hovered_column = ImGui::TableGetHoveredColumn();
+            int hovered_column = -1;
             for (int column = 0; column < COLUMNS_COUNT + 1; column++)
             {
                 ImGui::PushID(column);
+                if (ImGui::TableGetColumnFlags(column) & ImGuiTableColumnFlags_IsHovered)
+                    hovered_column = column;
                 if (hovered_column == column && !ImGui::IsAnyItemHovered() && ImGui::IsMouseReleased(1))
                     ImGui::OpenPopup("MyPopup");
                 if (ImGui::BeginPopup("MyPopup"))
@@ -4480,7 +4491,7 @@ static void ShowDemoWindowTables()
             }
 
             ImGui::EndTable();
-            ImGui::Text("TableGetHoveredColumn() returned: %d", hovered_column);
+            ImGui::Text("Hovered column: %d", hovered_column);
         }
         ImGui::TreePop();
     }

imgui_draw.cpp

@@ -226,7 +226,7 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
     colors[ImGuiCol_TableBorderStrong]      = ImVec4(0.31f, 0.31f, 0.35f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableBorderLight]       = ImVec4(0.23f, 0.23f, 0.25f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
-    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.07f);
+    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);
     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
     colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
     colors[ImGuiCol_NavHighlight]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
@@ -347,7 +347,7 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
     colors[ImGuiCol_TableBorderStrong]      = ImVec4(0.57f, 0.57f, 0.64f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableBorderLight]       = ImVec4(0.68f, 0.68f, 0.74f, 1.00f);   // Prefer using Alpha=1.0 here
     colors[ImGuiCol_TableRowBg]             = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
-    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(0.30f, 0.30f, 0.30f, 0.07f);
+    colors[ImGuiCol_TableRowBgAlt]          = ImVec4(0.30f, 0.30f, 0.30f, 0.09f);
     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
     colors[ImGuiCol_DragDropTarget]         = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
     colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];

imgui_internal.h

@@ -2027,8 +2027,8 @@ struct ImGuiTable
     ImGuiWindow*                InnerWindow;                // Window holding the table data (== OuterWindow or a child window)
     ImGuiTextBuffer             ColumnsNames;               // Contiguous buffer holding columns names
     ImDrawListSplitter          DrawSplitter;               // We carry our own ImDrawList splitter to allow recursion (FIXME: could be stored outside, worst case we need 1 splitter per recursing table)
-    ImGuiTableSortSpecsColumn   SortSpecsSingle;
+    ImGuiTableColumnSortSpecs   SortSpecsSingle;
-    ImVector<ImGuiTableSortSpecsColumn> SortSpecsMulti;     // FIXME-OPT: Using a small-vector pattern would work be good.
+    ImVector<ImGuiTableColumnSortSpecs> SortSpecsMulti;     // FIXME-OPT: Using a small-vector pattern would work be good.
     ImGuiTableSortSpecs         SortSpecs;                  // Public facing sorts specs, this is what we return in TableGetSortSpecs()
     ImGuiTableColumnIdx         SortSpecsCount;
     ImGuiTableColumnIdx         ColumnsEnabledCount;        // Number of enabled columns (<= ColumnsCount)
@@ -2286,6 +2286,7 @@ namespace ImGui
     IMGUI_API void          TableSetColumnWidth(int column_n, float width);
     IMGUI_API void          TableSetColumnIsEnabled(int column_n, bool enabled);
     IMGUI_API void          TableSetColumnSortDirection(int column_n, ImGuiSortDirection sort_direction, bool append_to_sort_specs);
+    IMGUI_API int           TableGetHoveredColumn(); // May use (TableGetColumnFlags() & ImGuiTableColumnFlags_IsHovered) instead. Return hovered column. return -1 when table is not hovered. return columns_count if the unused space at the right of visible columns is hovered.
     IMGUI_API float         TableGetHeaderRowHeight();
     IMGUI_API void          TablePushBackgroundChannel();
     IMGUI_API void          TablePopBackgroundChannel();

imgui_tables.cpp

@@ -1779,6 +1779,7 @@ const char* ImGui::TableGetColumnName(int column_n)
     return TableGetColumnName(table, column_n);
 }
 
+// We allow querying for an extra column in order to poll the IsHovered state of the right-most section
 ImGuiTableColumnFlags ImGui::TableGetColumnFlags(int column_n)
 {
     ImGuiContext& g = *GImGui;
@@ -1787,6 +1788,8 @@ ImGuiTableColumnFlags ImGui::TableGetColumnFlags(int column_n)
         return ImGuiTableColumnFlags_None;
     if (column_n < 0)
         column_n = table->CurrentColumn;
+    if (column_n == table->ColumnsCount)
+        return (table->HoveredColumnBody == column_n) ? ImGuiTableColumnFlags_IsHovered : ImGuiTableColumnFlags_None;
     return table->Columns[column_n].Flags;
 }
 
@@ -2452,14 +2455,14 @@ void ImGui::TableSortSpecsBuild(ImGuiTable* table)
     // Write output
     const bool single_sort_specs = (table->SortSpecsCount <= 1);
     table->SortSpecsMulti.resize(single_sort_specs ? 0 : table->SortSpecsCount);
-    ImGuiTableSortSpecsColumn* sort_specs = single_sort_specs ? &table->SortSpecsSingle : table->SortSpecsMulti.Data;
+    ImGuiTableColumnSortSpecs* sort_specs = single_sort_specs ? &table->SortSpecsSingle : table->SortSpecsMulti.Data;
     for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
     {
         ImGuiTableColumn* column = &table->Columns[column_n];
         if (column->SortOrder == -1)
             continue;
         IM_ASSERT(column->SortOrder < table->SortSpecsCount);
-        ImGuiTableSortSpecsColumn* sort_spec = &sort_specs[column->SortOrder];
+        ImGuiTableColumnSortSpecs* sort_spec = &sort_specs[column->SortOrder];
         sort_spec->ColumnUserID = column->UserID;
         sort_spec->ColumnIndex = (ImGuiTableColumnIdx)column_n;
         sort_spec->SortOrder = (ImGuiTableColumnIdx)column->SortOrder;