Log/Capture: reworked scope + decorating menus, tabs.

docs/CHANGELOG.txt

@@ -48,6 +48,8 @@ Other changes:
 - Buttons: using ImGuiItemFlags_ButtonRepeat makes default button behavior use
   PressedOnClick instead of PressedOnClickRelease when unspecified.
 - Fonts: removed const qualifiers from most font functions.
+- Log/Capture: better decorating of BeginMenu() and TabItem() output.
+- Log/Capture: a non terminated log ends automatically in the window which called it.
 - Backends: DX12: Unmap() call specify written range. The range is informational and
   may be used by debug tools.
 - Backends: SDL2: Replace SDL_Vulkan_GetDrawableSize() forward declaration with the 

imgui.cpp

@@ -4008,6 +4008,7 @@ ImGuiContext::ImGuiContext(ImFontAtlas* shared_font_atlas)
 
     LogEnabled = false;
     LogFlags = ImGuiLogFlags_None;
+    LogWindow = NULL;
     LogNextPrefix = LogNextSuffix = NULL;
     LogFile = NULL;
     LogLinePosY = FLT_MAX;
@@ -7748,7 +7749,7 @@ void ImGui::End()
     }
 
     // Stop logging
-    if (!(window->Flags & ImGuiWindowFlags_ChildWindow))    // FIXME: add more options for scope of logging
+    if (g.LogWindow == window) // FIXME: add more options for scope of logging
         LogFinish();
 
     if (window->DC.IsSetPos)
@@ -14334,6 +14335,7 @@ void ImGui::LogBegin(ImGuiLogFlags flags, int auto_open_depth)
 
     g.LogEnabled = g.ItemUnclipByLog = true;
     g.LogFlags = flags;
+    g.LogWindow = window;
     g.LogNextPrefix = g.LogNextSuffix = NULL;
     g.LogDepthRef = window->DC.TreeDepth;
     g.LogDepthToExpand = ((auto_open_depth >= 0) ? auto_open_depth : g.LogDepthToExpandDefault);

imgui_internal.h

@@ -2321,6 +2321,7 @@ struct ImGuiContext
     // Capture/Logging
     bool                    LogEnabled;                         // Currently capturing
     ImGuiLogFlags           LogFlags;                           // Capture flags/type
+    ImGuiWindow*            LogWindow;
     ImFileHandle            LogFile;                            // If != NULL log to stdout/ file
     ImGuiTextBuffer         LogBuffer;                          // Accumulation buffer when log to clipboard. This is pointer so our GImGui static constructor doesn't call heap allocators.
     const char*             LogNextPrefix;

imgui_widgets.cpp

@@ -8811,6 +8811,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
         float w = label_size.x;
         ImVec2 text_pos(window->DC.CursorPos.x + offsets->OffsetLabel, window->DC.CursorPos.y + window->DC.CurrLineTextBaseOffset);
         pressed = Selectable("", menu_is_open, selectable_flags, ImVec2(w, label_size.y));
+        LogSetNextTextDecoration("[", "]");
         RenderText(text_pos, label);
         PopStyleVar();
         window->DC.CursorPos.x += IM_TRUNC(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
@@ -8827,6 +8828,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
         float extra_w = ImMax(0.0f, GetContentRegionAvail().x - min_w);
         ImVec2 text_pos(window->DC.CursorPos.x + offsets->OffsetLabel, window->DC.CursorPos.y + window->DC.CurrLineTextBaseOffset);
         pressed = Selectable("", menu_is_open, selectable_flags | ImGuiSelectableFlags_SpanAvailWidth, ImVec2(min_w, label_size.y));
+        LogSetNextTextDecoration("", ">");
         RenderText(text_pos, label);
         if (icon_w > 0.0f)
             RenderText(pos + ImVec2(offsets->OffsetIcon, 0.0f), icon);
@@ -9040,6 +9042,7 @@ bool ImGui::MenuItemEx(const char* label, const char* icon, const char* shortcut
             if (shortcut_w > 0.0f)
             {
                 PushStyleColor(ImGuiCol_Text, style.Colors[ImGuiCol_TextDisabled]);
+                LogSetNextTextDecoration("(", ")");
                 RenderText(pos + ImVec2(offsets->OffsetShortcut + stretch_w, 0.0f), shortcut, NULL, false);
                 PopStyleColor();
             }
@@ -10288,6 +10291,7 @@ void ImGui::TabItemLabelAndCloseButton(ImDrawList* draw_list, const ImRect& bb,
         text_ellipsis_clip_bb.Max.x -= unsaved_marker_visible ? (button_sz * 0.80f) : 0.0f;
         ellipsis_max_x = text_pixel_clip_bb.Max.x;
     }
+    LogSetNextTextDecoration("/", "\\");
     RenderTextEllipsis(draw_list, text_ellipsis_clip_bb.Min, text_ellipsis_clip_bb.Max, text_pixel_clip_bb.Max.x, ellipsis_max_x, label, NULL, &label_size);
 
 #if 0