Added optional Indent() Unindent() width (#324, #581)

imgui.cpp

@@ -546,12 +546,12 @@
  - drag float: up/down axis
  - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
  - tree node / optimization: avoid formatting when clipped.
- - tree node: clarify spacing, perhaps provide API to query exact spacing. provide API to draw the primitive. same with Bullet().
  - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
- - tree node: add treenode/treepush int variants? because (void*) cast from int warns on some platforms/settings
+ - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
  - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
  - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- - textwrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (git issue #249)
+ - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
+ - textwrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
  - settings: write more decent code to allow saving/loading new fields
  - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file
  - style: add window shadows.
@@ -9375,19 +9375,19 @@ void ImGui::Columns(int columns_count, const char* id, bool border)
     }
 }
 
-void ImGui::Indent()
+void ImGui::Indent(float indent_w)
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = GetCurrentWindow();
-    window->DC.IndentX += g.Style.IndentSpacing;
+    window->DC.IndentX += (indent_w > 0.0f) ? indent_w : g.Style.IndentSpacing;
     window->DC.CursorPos.x = window->Pos.x + window->DC.IndentX + window->DC.ColumnsOffsetX;
 }
 
-void ImGui::Unindent()
+void ImGui::Unindent(float indent_w)
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = GetCurrentWindow();
-    window->DC.IndentX -= g.Style.IndentSpacing;
+    window->DC.IndentX -= (indent_w > 0.0f) ? indent_w : g.Style.IndentSpacing;
     window->DC.CursorPos.x = window->Pos.x + window->DC.IndentX + window->DC.ColumnsOffsetX;
 }
 

imgui.h

@@ -197,8 +197,8 @@ namespace ImGui
     IMGUI_API void          NewLine();                                                          // undo a SameLine()
     IMGUI_API void          Spacing();                                                          // add vertical spacing
     IMGUI_API void          Dummy(const ImVec2& size);                                          // add a dummy item of given size
-    IMGUI_API void          Indent();                                                           // move content position toward the right by style.IndentSpacing
-    IMGUI_API void          Unindent();                                                         // move content position back to the left by style.IndentSpacing
+    IMGUI_API void          Indent(float indent_w = 0.0f);                                      // move content position toward the right, by style.IndentSpacing or indent_w if >0
+    IMGUI_API void          Unindent(float indent_w = 0.0f);                                    // move content position back to the left, by style.IndentSpacing or indent_w if >0
     IMGUI_API void          BeginGroup();                                                       // lock horizontal starting position + capture group bounding box into one "item" (so you can use IsItemHovered() or layout primitives such as SameLine() on whole group, etc.)
     IMGUI_API void          EndGroup();
     IMGUI_API ImVec2        GetCursorPos();                                                     // cursor position is relative to window position