Minor fixes/tweaks (some to reduce drift wiih master branch)

imgui.cpp

@@ -388,7 +388,6 @@ CODE
                        - IMGUI_DISABLE_TEST_WINDOWS          -> use IMGUI_DISABLE_DEMO_WINDOWS
  - 2019/12/08 (1.75) - obsoleted calling ImDrawList::PrimReserve() with a negative count (which was the vaguely documented and rarely if ever used). Instead we added an explicit PrimUnreserve() API.
  - 2019/12/06 (1.75) - removed implicit default parameter to IsMouseDragging(int button = 0) to be consistent with other mouse functions (none of the other functions have it).
->>>>>>> refs/heads/master
  - 2019/11/21 (1.74) - ImFontAtlas::AddCustomRectRegular() now requires an ID larger than 0x110000 (instead of 0x10000) to conform with supporting Unicode planes 1-16 in a future update. ID below 0x110000 will now assert.
  - 2019/11/19 (1.74) - renamed IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS to IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS for consistency.
  - 2019/11/19 (1.74) - renamed IMGUI_DISABLE_MATH_FUNCTIONS to IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS for consistency.
@@ -3848,7 +3847,7 @@ void ImGui::NewFrame()
     ImRect virtual_space(FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX);
     for (int n = 0; n < g.Viewports.Size; n++)
         virtual_space.Add(g.Viewports[n]->GetRect());
-    g.DrawListSharedData.ClipRectFullscreen = ImVec4(virtual_space.Min.x, virtual_space.Min.y, virtual_space.Max.x, virtual_space.Max.y);
+    g.DrawListSharedData.ClipRectFullscreen = ImVec4(virtual_space.Min, virtual_space.Max);
     g.DrawListSharedData.CurveTessellationTol = g.Style.CurveTessellationTol;
     g.DrawListSharedData.SetCircleSegmentMaxError(g.Style.CircleSegmentMaxError);
     g.DrawListSharedData.InitialFlags = ImDrawListFlags_None;
@@ -4500,7 +4499,7 @@ void ImGui::Render()
             AddRootWindowToDrawData(window);
     }
     for (int n = 0; n < IM_ARRAYSIZE(windows_to_render_top_most); n++)
-        if (windows_to_render_top_most[n] && IsWindowActiveAndVisible(windows_to_render_top_most[n])) // NavWindowingTarget is always temporarily displayed as the tp-most window
+        if (windows_to_render_top_most[n] && IsWindowActiveAndVisible(windows_to_render_top_most[n])) // NavWindowingTarget is always temporarily displayed as the top-most window
             AddRootWindowToDrawData(windows_to_render_top_most[n]);
 
     // Draw software mouse cursor if requested
@@ -5459,7 +5458,7 @@ static bool ImGui::UpdateManualResize(ImGuiWindow* window, const ImVec2& size_au
     }
     PopID();
 
-    // Resize nav layer
+    // Restore nav layer
     window->DC.NavLayerCurrent = ImGuiNavLayer_Main;
     window->DC.NavLayerCurrentMask = (1 << ImGuiNavLayer_Main);
 
@@ -6341,13 +6340,12 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
                 window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_NavWindowingHighlight, g.NavWindowingHighlightAlpha * 0.25f), g.Style.WindowRounding);
         }
 
-        const bool is_undocked_or_docked_visible = !window->DockIsActive || window->DockTabIsVisible;
-
         // Since 1.71, child window can render their decoration (bg color, border, scrollbars, etc.) within their parent to save a draw call.
         // When using overlapping child windows, this will break the assumption that child z-order is mapped to submission order.
         // We disable this when the parent window has zero vertices, which is a common pattern leading to laying out multiple overlapping child.
         // We also disabled this when we have dimming overlay behind this specific one child.
         // FIXME: More code may rely on explicit sorting of overlapping child window and would need to disable this somehow. Please get in contact if you are affected.
+        const bool is_undocked_or_docked_visible = !window->DockIsActive || window->DockTabIsVisible;
         if (is_undocked_or_docked_visible)
         {
             bool render_decorations_in_parent = false;
@@ -6464,7 +6462,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
             NavInitWindow(window, false);
         }
 
-        // Close from platform window
+        // Close requested by platform window
         if (p_open != NULL && window->Viewport->PlatformRequestClose && window->Viewport != GetMainViewport())
         {
             if (!window->DockIsActive || window->DockTabIsVisible)
@@ -15280,8 +15278,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
             char buf[256];
             char* p = buf;
             const char* buf_end = buf + IM_ARRAYSIZE(buf);
-            p += ImFormatString(p, buf_end - p, "TabBar (%d tabs)%s",
-                tab_bar->Tabs.Size, (tab_bar->PrevFrameVisible < ImGui::GetFrameCount() - 2) ? " *Inactive*" : "");
+            p += ImFormatString(p, buf_end - p, "TabBar (%d tabs)%s", tab_bar->Tabs.Size, (tab_bar->PrevFrameVisible < ImGui::GetFrameCount() - 2) ? " *Inactive*" : "");
             if (tab_bar->Flags & ImGuiTabBarFlags_DockNode)
             {
                 p += ImFormatString(p, buf_end - p, "  { ");

imgui.h

@@ -1454,7 +1454,7 @@ struct ImGuiIO
 
     ImGuiConfigFlags   ConfigFlags;             // = 0              // See ImGuiConfigFlags_ enum. Set by user/application. Gamepad/keyboard navigation options, etc.
     ImGuiBackendFlags  BackendFlags;            // = 0              // See ImGuiBackendFlags_ enum. Set by back-end (imgui_impl_xxx files or custom back-end) to communicate features supported by the back-end.
-    ImVec2      DisplaySize;                    // <unset>          // Main display size, in pixels. This is for the default viewport. Use BeginViewport() for other viewports.
+    ImVec2      DisplaySize;                    // <unset>          // Main display size, in pixels. This is for the default viewport.
     float       DeltaTime;                      // = 1.0f/60.0f     // Time elapsed since last frame, in seconds.
     float       IniSavingRate;                  // = 5.0f           // Minimum time between saving positions/sizes to .ini file, in seconds.
     const char* IniFilename;                    // = "imgui.ini"    // Path to .ini file. Set NULL to disable automatic .ini loading/saving, if e.g. you want to manually load/save from memory.

imgui_demo.cpp

@@ -4867,7 +4867,7 @@ void ShowExampleAppDocuments(bool* p_open)
         Target_DockSpaceAndWindow   // Create documents as regular windows, and create an embedded dockspace
     };
     static Target opt_target = Target_Tab;
-    static bool   opt_reorderable = true;
+    static bool opt_reorderable = true;
     static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_;
 
     // When (opt_target == Target_DockSpaceAndWindow) there is the possibily that one of our child Document window (e.g. "Eggplant")

imgui_draw.cpp

@@ -3153,10 +3153,10 @@ void ImGui::RenderMouseCursor(ImDrawList* draw_list, ImVec2 pos, float scale, Im
         pos -= offset;
         const ImTextureID tex_id = font_atlas->TexID;
         draw_list->PushTextureID(tex_id);
-        draw_list->AddImage(tex_id, pos + ImVec2(1, 0)*scale, pos + ImVec2(1, 0)*scale + size*scale, uv[2], uv[3], col_shadow);
-        draw_list->AddImage(tex_id, pos + ImVec2(2, 0)*scale, pos + ImVec2(2, 0)*scale + size*scale, uv[2], uv[3], col_shadow);
-        draw_list->AddImage(tex_id, pos, pos + size*scale, uv[2], uv[3], col_border);
-        draw_list->AddImage(tex_id, pos, pos + size*scale, uv[0], uv[1], col_fill);
+        draw_list->AddImage(tex_id, pos + ImVec2(1,0)*scale, pos + ImVec2(1,0)*scale + size*scale, uv[2], uv[3], col_shadow);
+        draw_list->AddImage(tex_id, pos + ImVec2(2,0)*scale, pos + ImVec2(2,0)*scale + size*scale, uv[2], uv[3], col_shadow);
+        draw_list->AddImage(tex_id, pos,                     pos + size*scale,                     uv[2], uv[3], col_border);
+        draw_list->AddImage(tex_id, pos,                     pos + size*scale,                     uv[0], uv[1], col_fill);
         draw_list->PopTextureID();
     }
 }

imgui_internal.h

@@ -1004,7 +1004,7 @@ struct ImGuiNextItemData
 };
 
 //-----------------------------------------------------------------------------
-// Docking, Tabs
+// Tabs
 //-----------------------------------------------------------------------------
 
 struct ImGuiShrinkWidthItem
@@ -1022,6 +1022,10 @@ struct ImGuiPtrOrIndex
     ImGuiPtrOrIndex(int index)          { Ptr = NULL; Index = index; }
 };
 
+//-----------------------------------------------------------------------------
+// Docking
+//-----------------------------------------------------------------------------
+
 // Extend ImGuiDockNodeFlags_
 enum ImGuiDockNodeFlagsPrivate_
 {
@@ -1113,7 +1117,7 @@ struct ImGuiDockNode
 };
 
 //-----------------------------------------------------------------------------
-// Main imgui context
+// Main Dear ImGui context
 //-----------------------------------------------------------------------------
 
 struct ImGuiContext
@@ -1610,7 +1614,7 @@ struct IMGUI_API ImGuiWindow
     bool                    SkipItems;                          // Set when items can safely be all clipped (e.g. window not visible or collapsed)
     bool                    Appearing;                          // Set during the frame where the window is appearing (or re-appearing)
     bool                    Hidden;                             // Do not display (== (HiddenFrames*** > 0))
-    bool                    IsFallbackWindow;
+    bool                    IsFallbackWindow;                   // Set on the "Debug##Default" window.
     bool                    HasCloseButton;                     // Set when the window has a close button (p_open != NULL)
     signed char             ResizeBorderHeld;                   // Current border being held for resize (-1: none, otherwise 0-3)
     short                   BeginCount;                         // Number of Begin() during the current frame (generally 0 or 1, 1+ if appending via multiple Begin/End pairs)

imgui_widgets.cpp

@@ -6366,8 +6366,6 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected,
 //-------------------------------------------------------------------------
 // [SECTION] Widgets: BeginTabBar, EndTabBar, etc.
 //-------------------------------------------------------------------------
-// [BETA API] API may evolve!
-//-------------------------------------------------------------------------
 // - BeginTabBar()
 // - BeginTabBarEx() [Internal]
 // - EndTabBar()
@@ -6926,8 +6924,6 @@ static ImGuiTabItem* ImGui::TabBarTabListPopupButton(ImGuiTabBar* tab_bar)
 //-------------------------------------------------------------------------
 // [SECTION] Widgets: BeginTabItem, EndTabItem, etc.
 //-------------------------------------------------------------------------
-// [BETA API] API may evolve!
-//-------------------------------------------------------------------------
 // - BeginTabItem()
 // - EndTabItem()
 // - TabItemEx() [Internal]