Tables: Added TableSetBgColor() api with color for RowBg and CellBg colors.

imgui.h

@@ -157,6 +157,7 @@ typedef int ImGuiMouseButton;       // -> enum ImGuiMouseButton_     // Enum: A
 typedef int ImGuiMouseCursor;       // -> enum ImGuiMouseCursor_     // Enum: A mouse cursor identifier
 typedef int ImGuiSortDirection;     // -> enum ImGuiSortDirection_   // Enum: A sorting direction (ascending or descending)
 typedef int ImGuiStyleVar;          // -> enum ImGuiStyleVar_        // Enum: A variable identifier for styling
+typedef int ImGuiTableBgTarget;     // -> enum ImGuiTableBgTarget_   // Enum: A color target for TableSetBgColor()
 typedef int ImDrawCornerFlags;      // -> enum ImDrawCornerFlags_    // Flags: for ImDrawList::AddRect(), AddRectFilled() etc.
 typedef int ImDrawListFlags;        // -> enum ImDrawListFlags_      // Flags: for ImDrawList
 typedef int ImFontAtlasFlags;       // -> enum ImFontAtlasFlags_     // Flags: for ImFontAtlas build
@@ -684,6 +685,7 @@ namespace ImGui
     IMGUI_API bool          TableGetColumnIsVisible(int column_n = -1); // return true if column is visible. Same value is also returned by TableNextCell() and TableSetColumnIndex(). Pass -1 to use current column.
     IMGUI_API bool          TableGetColumnIsSorted(int column_n = -1);  // return true if column is included in the sort specs. Rarely used, can be useful to tell if a data change should trigger resort. Equivalent to test ImGuiTableSortSpecs's ->ColumnsMask & (1 << column_n). Pass -1 to use current column.
     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 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.
     // Tables: Headers & Columns declaration
     // - Use TableSetupColumn() to specify label, resizing policy, default width, id, various other flags etc.
     // - The name passed to TableSetupColumn() is used by TableAutoHeaders() and by the context-menu
@@ -1036,7 +1038,7 @@ enum ImGuiTableFlags_
     ImGuiTableFlags_MultiSortable                   = 1 << 4,   // Allow sorting on multiple columns by holding Shift (sort_specs_count may be > 1). Call TableGetSortSpecs() to obtain sort specs.
     ImGuiTableFlags_NoSavedSettings                 = 1 << 5,   // Disable persisting columns order, width and sort settings in the .ini file.
     // Decoration
-    ImGuiTableFlags_RowBg                           = 1 << 6,   // Use ImGuiCol_TableRowBg and ImGuiCol_TableRowBgAlt colors behind each rows.
+    ImGuiTableFlags_RowBg                           = 1 << 6,   // Set each RowBg color with ImGuiCol_TableRowBg or ImGuiCol_TableRowBgAlt (equivalent to calling TableSetBgColor with ImGuiTableBgFlags_RowBg0 on each row manually)
     ImGuiTableFlags_BordersInnerH                   = 1 << 7,   // Draw horizontal borders between rows.
     ImGuiTableFlags_BordersOuterH                   = 1 << 8,   // Draw horizontal borders at the top and bottom.
     ImGuiTableFlags_BordersInnerV                   = 1 << 9,   // Draw vertical borders between columns.
@@ -1109,6 +1111,25 @@ enum ImGuiTableRowFlags_
     ImGuiTableRowFlags_Headers                      = 1 << 0    // Identify header row (set default background color + width of its contents accounted different for auto column width)
 };
 
+// Enum for ImGui::TableSetBgColor()
+// Background colors are rendering in 3 layers:
+//  - Layer 0: draw with RowBg0 color if set, otherwise draw with ColumnBg0 if set.
+//  - Layer 1: draw with RowBg1 color if set, otherwise draw with ColumnBg1 if set.
+//  - Layer 2: draw with CellBg color if set.
+// The purpose of the two row/columns layers is to let you decide if a background color changes should override or blend with the existing color.
+// When using ImGuiTableFlags_RowBg on the table, each row has the RowBg0 color automatically set for odd/even rows.
+// If you set the color of RowBg0 target, your color will override the existing RowBg0 color.
+// If you set the color of RowBg1 or ColumnBg1 target, your color will blend over the RowBg0 color.
+enum ImGuiTableBgTarget_
+{
+    ImGuiTableBgTarget_None                         = 0,
+    ImGuiTableBgTarget_ColumnBg0                    = 1,        // FIXME-TABLE: Todo. Set column background color 0 (generally used for background
+    ImGuiTableBgTarget_ColumnBg1                    = 2,        // FIXME-TABLE: Todo. Set column background color 1 (generally used for selection marking)
+    ImGuiTableBgTarget_RowBg0                       = 3,        // Set row background color 0 (generally used for background, automatically set when ImGuiTableFlags_RowBg is used)
+    ImGuiTableBgTarget_RowBg1                       = 4,        // Set row background color 1 (generally used for selection marking)
+    ImGuiTableBgTarget_CellBg                       = 5         // Set cell background color (top-most color)
+};
+
 // Flags for ImGui::IsWindowFocused()
 enum ImGuiFocusedFlags_
 {