Tables: (breaking) change outer_size.x default value to -FLT_MIN, make outer_size.x == 0.0f act as ImGuiTableFlags_NoHostExtendX (ocornut#3605, ad83976) when no scrolling and no stretch column. Which is more consistent.

Demo: moved "Compact table" to "Padding" section, makes more sense. Tweaked demo.

Author: ocornut

imgui.h

@@ -462,7 +462,7 @@ namespace ImGui
     IMGUI_API bool          CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value);
     IMGUI_API bool          RadioButton(const char* label, bool active);                    // use with e.g. if (RadioButton("one", my_value==1)) { my_value = 1; }
     IMGUI_API bool          RadioButton(const char* label, int* v, int v_button);           // shortcut to handle the above pattern when value is an integer
-    IMGUI_API void          ProgressBar(float fraction, const ImVec2& size_arg = ImVec2(-1, 0), const char* overlay = NULL);
+    IMGUI_API void          ProgressBar(float fraction, const ImVec2& size_arg = ImVec2(-FLT_MIN, 0), const char* overlay = NULL);
     IMGUI_API void          Bullet();                                                       // draw a small circle + keep the cursor on the same line. advance cursor x position by GetTreeNodeToLabelSpacing(), same distance that TreeNode() uses
 
     // Widgets: Combo Box
@@ -679,7 +679,7 @@ namespace ImGui
     //       TableNextRow()                           -> Text("Hello 0")                                               // Not OK! Missing TableSetColumnIndex() or TableNextColumn()! Text will not appear!
     //      ----------------------------------------------------------------------------------------------------------
     // - 5. Call EndTable()
-    IMGUI_API bool          BeginTable(const char* str_id, int columns_count, ImGuiTableFlags flags = 0, const ImVec2& outer_size = ImVec2(0, 0), float inner_width = 0.0f);
+    IMGUI_API bool          BeginTable(const char* str_id, int columns_count, ImGuiTableFlags flags = 0, const ImVec2& outer_size = ImVec2(-FLT_MIN, 0), float inner_width = 0.0f);
     IMGUI_API void          EndTable();                                 // only call EndTable() if BeginTable() returns true!
     IMGUI_API void          TableNextRow(ImGuiTableRowFlags row_flags = 0, float min_row_height = 0.0f); // append into the first cell of a new row.
     IMGUI_API bool          TableNextColumn();                          // append into the next column (or first column of next row if currently in last column). Return true when column is visible.
@@ -1075,21 +1075,20 @@ enum ImGuiTableFlags_
     ImGuiTableFlags_ColumnsWidthFixed               = 1 << 14,  // Default if ScrollX is on. Columns will default to use _WidthFixed or _WidthAutoResize policy (if Resizable is off). Read description above for more details.
     ImGuiTableFlags_SameWidths                      = 1 << 15,  // Make all columns the same widths which is useful with Fixed columns policy (but granted by default with Stretch policy + no resize). Implicitly enable ImGuiTableFlags_NoKeepColumnsVisible and disable ImGuiTableFlags_Resizable.
     ImGuiTableFlags_NoHeadersWidth                  = 1 << 16,  // Disable headers' contribution to automatic width calculation.
-    ImGuiTableFlags_NoHostExtendX                   = 1 << 17,  // Disable extending table past the limit required by the right-most columns. Only meaningful with Fixed columns and when neither ScrollX nor ScrollY are set.
-    ImGuiTableFlags_NoHostExtendY                   = 1 << 18,  // Disable extending table past the limit set by outer_size.y. Only meaningful when neither ScrollX nor ScrollY are set (data below the limit will be clipped and not visible)
-    ImGuiTableFlags_NoKeepColumnsVisible            = 1 << 19,  // Disable keeping column always minimally visible when ScrollX is off and table gets too small.
-    ImGuiTableFlags_PreciseWidths                   = 1 << 20,  // Disable distributing remainder width to stretched columns (width allocation on a 100-wide table with 3 columns: Without this flag: 33,33,34. With this flag: 33,33,33). With larger number of columns, resizing will appear to be less smooth.
-    ImGuiTableFlags_NoClip                          = 1 << 21,  // Disable clipping rectangle for every individual columns (reduce draw command count, items will be able to overflow into other columns). Generally incompatible with TableSetupScrollFreeze().
+    ImGuiTableFlags_NoHostExtendY                   = 1 << 17,  // Disable extending table past the limit set by outer_size.y. Only meaningful when neither ScrollX nor ScrollY are set (data below the limit will be clipped and not visible)
+    ImGuiTableFlags_NoKeepColumnsVisible            = 1 << 18,  // Disable keeping column always minimally visible when ScrollX is off and table gets too small.
+    ImGuiTableFlags_PreciseWidths                   = 1 << 19,  // Disable distributing remainder width to stretched columns (width allocation on a 100-wide table with 3 columns: Without this flag: 33,33,34. With this flag: 33,33,33). With larger number of columns, resizing will appear to be less smooth.
+    ImGuiTableFlags_NoClip                          = 1 << 20,  // Disable clipping rectangle for every individual columns (reduce draw command count, items will be able to overflow into other columns). Generally incompatible with TableSetupScrollFreeze().
     // Padding
-    ImGuiTableFlags_PadOuterX                       = 1 << 22,  // Default if BordersOuterV is on. Enable outer-most padding.
-    ImGuiTableFlags_NoPadOuterX                     = 1 << 23,  // Default if BordersOuterV is off. Disable outer-most padding.
-    ImGuiTableFlags_NoPadInnerX                     = 1 << 24,  // Disable inner padding between columns (double inner padding if BordersOuterV is on, single inner padding if BordersOuterV is off).
+    ImGuiTableFlags_PadOuterX                       = 1 << 21,  // Default if BordersOuterV is on. Enable outer-most padding.
+    ImGuiTableFlags_NoPadOuterX                     = 1 << 22,  // Default if BordersOuterV is off. Disable outer-most padding.
+    ImGuiTableFlags_NoPadInnerX                     = 1 << 23,  // Disable inner padding between columns (double inner padding if BordersOuterV is on, single inner padding if BordersOuterV is off).
     // Scrolling
-    ImGuiTableFlags_ScrollX                         = 1 << 25,  // Enable horizontal scrolling. Require 'outer_size' parameter of BeginTable() to specify the container size. Changes default sizing policy. Because this create a child window, ScrollY is currently generally recommended when using ScrollX.
-    ImGuiTableFlags_ScrollY                         = 1 << 26,  // Enable vertical scrolling. Require 'outer_size' parameter of BeginTable() to specify the container size.
+    ImGuiTableFlags_ScrollX                         = 1 << 24,  // Enable horizontal scrolling. Require 'outer_size' parameter of BeginTable() to specify the container size. Changes default sizing policy. Because this create a child window, ScrollY is currently generally recommended when using ScrollX.
+    ImGuiTableFlags_ScrollY                         = 1 << 25,  // Enable vertical scrolling. Require 'outer_size' parameter of BeginTable() to specify the container size.
     // Sorting
-    ImGuiTableFlags_SortMulti                       = 1 << 27,  // Hold shift when clicking headers to sort on multiple column. TableGetSortSpecs() may return specs where (SpecsCount > 1).
-    ImGuiTableFlags_SortTristate                    = 1 << 28   // Allow no sorting, disable default sorting. TableGetSortSpecs() may return specs where (SpecsCount == 0).
+    ImGuiTableFlags_SortMulti                       = 1 << 26,  // Hold shift when clicking headers to sort on multiple column. TableGetSortSpecs() may return specs where (SpecsCount > 1).
+    ImGuiTableFlags_SortTristate                    = 1 << 27   // Allow no sorting, disable default sorting. TableGetSortSpecs() may return specs where (SpecsCount == 0).
 };
 
 // Flags for ImGui::TableSetupColumn()