Internals: Tweaks to ItemSize() should be harmless. Added DebugDrawItemRect() helper.

imgui.cpp

@@ -2969,7 +2969,7 @@ static inline bool IsWindowContentHoverable(ImGuiWindow* window, ImGuiHoveredFla
 }
 
 // Advance cursor given item size for layout.
-void ImGui::ItemSize(const ImVec2& size, float text_offset_y)
+void ImGui::ItemSize(const ImVec2& size, float text_baseline_y)
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = g.CurrentWindow;
@@ -2978,28 +2978,28 @@ void ImGui::ItemSize(const ImVec2& size, float text_offset_y)
 
     // Always align ourselves on pixel boundaries
     const float line_height = ImMax(window->DC.CurrLineSize.y, size.y);
-    const float text_base_offset = ImMax(window->DC.CurrLineTextBaseOffset, text_offset_y);
     //if (g.IO.KeyAlt) window->DrawList->AddRect(window->DC.CursorPos, window->DC.CursorPos + ImVec2(size.x, line_height), IM_COL32(255,0,0,200)); // [DEBUG]
     window->DC.CursorPosPrevLine.x = window->DC.CursorPos.x + size.x;
     window->DC.CursorPosPrevLine.y = window->DC.CursorPos.y;
-    window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
+    window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);    // Next line
-    window->DC.CursorPos.y = (float)(int)(window->DC.CursorPos.y + line_height + g.Style.ItemSpacing.y);
+    window->DC.CursorPos.y = (float)(int)(window->DC.CursorPos.y + line_height + g.Style.ItemSpacing.y);        // Next line
     window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPosPrevLine.x);
     window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y - g.Style.ItemSpacing.y);
     //if (g.IO.KeyAlt) window->DrawList->AddCircle(window->DC.CursorMaxPos, 3.0f, IM_COL32(255,0,0,255), 4); // [DEBUG]
 
     window->DC.PrevLineSize.y = line_height;
-    window->DC.PrevLineTextBaseOffset = text_base_offset;
+    window->DC.CurrLineSize.y = 0.0f;
-    window->DC.CurrLineSize.y = window->DC.CurrLineTextBaseOffset = 0.0f;
+    window->DC.PrevLineTextBaseOffset = ImMax(window->DC.CurrLineTextBaseOffset, text_baseline_y);
+    window->DC.CurrLineTextBaseOffset = 0.0f;
 
     // Horizontal layout mode
     if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
         SameLine();
 }
 
-void ImGui::ItemSize(const ImRect& bb, float text_offset_y)
+void ImGui::ItemSize(const ImRect& bb, float text_baseline_y)
 {
-    ItemSize(bb.GetSize(), text_offset_y);
+    ItemSize(bb.GetSize(), text_baseline_y);
 }
 
 // Declare item bounding box for clipping and interaction.

imgui_internal.h

@@ -383,6 +383,7 @@ enum ImGuiSeparatorFlags_
 // This is going to be exposed in imgui.h when stabilized enough.
 enum ImGuiItemFlags_
 {
+    ImGuiItemFlags_None                     = 0,
     ImGuiItemFlags_NoTabStop                = 1 << 0,  // false
     ImGuiItemFlags_ButtonRepeat             = 1 << 1,  // false    // Button() will return true multiple times based on io.KeyRepeatDelay and io.KeyRepeatRate settings.
     ImGuiItemFlags_Disabled                 = 1 << 2,  // false    // [BETA] Disable interactions but doesn't affect visuals yet. See github.com/ocornut/imgui/issues/211
@@ -1541,8 +1542,8 @@ namespace ImGui
     IMGUI_API void          PushOverrideID(ImGuiID id);
 
     // Basic Helpers for widget code
-    IMGUI_API void          ItemSize(const ImVec2& size, float text_offset_y = 0.0f);
+    IMGUI_API void          ItemSize(const ImVec2& size, float text_baseline_y = 0.0f);
-    IMGUI_API void          ItemSize(const ImRect& bb, float text_offset_y = 0.0f);
+    IMGUI_API void          ItemSize(const ImRect& bb, float text_baseline_y = 0.0f);
     IMGUI_API bool          ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb = NULL);
     IMGUI_API bool          ItemHoverable(const ImRect& bb, ImGuiID id);
     IMGUI_API bool          IsClippedEx(const ImRect& bb, ImGuiID id, bool clip_even_when_logged);
@@ -1704,7 +1705,8 @@ namespace ImGui
     IMGUI_API void          ShadeVertsLinearUV(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp);
 
     // Debug Tools
-    inline void             DebugStartItemPicker() { GImGui->DebugItemPickerActive = true; }
+    inline void             DebugDrawItemRect(ImU32 col = IM_COL32(255,0,0,255))    { ImGuiContext& g = *GImGui; ImGuiWindow* window = g.CurrentWindow; GetForegroundDrawList(window)->AddRect(window->DC.LastItemRect.Min, window->DC.LastItemRect.Max, col); }
+    inline void             DebugStartItemPicker()                                  { ImGuiContext& g = *GImGui; g.DebugItemPickerActive = true; }
 
 } // namespace ImGui
 

imgui_widgets.cpp

@@ -112,6 +112,7 @@ static ImVec2           InputTextCalcTextSizeW(const ImWchar* text_begin, const
 //-------------------------------------------------------------------------
 // [SECTION] Widgets: Text, etc.
 //-------------------------------------------------------------------------
+// - TextEx() [Internal]
 // - TextUnformatted()
 // - Text()
 // - TextV()