[ADD] : add the prototype of a translation systeme (WIP)

[IMP] : improvement of ImGuiFreetype, customized to take into account the color change of the PR ocornut/imgui#3369. static func copy from ImDraw for avoid modification of Imdraw
[FiX] : fix project change notif for some widget, was not take into account
[ADD] : add a black screen under the texture, because a colored glyph need to have a tint color of Vec4(1,1,1,1). else on light theme we can see only full ImGuiColText color
[IMP] : improvement of FontInfos for create a table who can say which glyph is colored or not. glyphInfos was modified for reflect this change. due to that, each glyphs is rendered differently regarding if colored or not
[FIX] : add COLR and partial CMAP parsing/display in fontParser

src/Gui/ImGuiWidgets.cpp

@@ -1225,8 +1225,6 @@ bool ImGui::SliderScalarDefaultCompact(float width, const char* label, ImGuiData
 {
 	bool change = false;
 
-	float ax = ImGui::GetCursorPosX();
-
 	ImGui::PushID(label);
 	if (CustomButton(ICON_IGFS_RESET))
 	{
@@ -1308,4 +1306,19 @@ bool ImGui::TransparentButton(const char* label, const ImVec2& size_arg, ImGuiBu
 	RenderTextClipped(bb.Min + style.FramePadding, bb.Max - style.FramePadding, label, NULL, &label_size, style.ButtonTextAlign, &bb);
 
 	return pressed;
+}
+
+void ImGui::PlainImageWithBG(ImTextureID user_texture_id, const ImVec2& size, const ImVec4& bg_col, const ImVec4& tint_col)
+{
+	ImGuiWindow* window = GetCurrentWindow();
+	if (window->SkipItems)
+		return;
+
+	ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
+	ItemSize(bb);
+	if (!ItemAdd(bb, 0))
+		return;
+
+	window->DrawList->AddRectFilled(bb.Min, bb.Max, GetColorU32(bg_col), 0.0f);
+	window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, ImVec2(0, 0), ImVec2(1, 1), GetColorU32(tint_col));
 }

src/Gui/ImGuiWidgets.h

@@ -282,5 +282,9 @@ namespace ImGui
 	////////////////////////////////////////////////////////////////////////////
 
 	IMGUI_API bool TransparentButton(const char* label, const ImVec2& size_arg = ImVec2(0, 0), ImGuiButtonFlags flags = 0);
+
+	////////////////////////////////////////////////////////////////////////////
+
+	IMGUI_API void PlainImageWithBG(ImTextureID user_texture_id, const ImVec2& size, const ImVec4& bg_col, const ImVec4& tint_col);
 }
 

src/Helper/FontHelper.cpp

@@ -872,7 +872,9 @@ bool FontHelper::Assemble_Head_Table()
 		offset += head->WriteULong(offset, hea->ChecksumAdjustment()); // checkSumAdjustment
 		offset += head->WriteULong(offset, 0x5F0F3CF5); // magicNumber
 		offset += head->WriteUShort(offset, hea->FlagsAsInt()); // flags
-		if (m_FontBoundingBox.Size().emptyOR())
+
+		int UnitsPerEM = m_FontBoundingBox.upperBound.x - m_FontBoundingBox.lowerBound.x;
+		if (UnitsPerEM >= 16 && UnitsPerEM  <= 16384) // freetype will refused font if not ok
 		{
 			offset += head->WriteUShort(offset, hea->UnitsPerEm()); // unitsPerEm
 		}
@@ -882,7 +884,7 @@ bool FontHelper::Assemble_Head_Table()
 		}
 		offset += head->WriteDateTime(offset, hea->Created()); // created
 		offset += head->WriteDateTime(offset, hea->Modified()); // modified
-		if (m_FontBoundingBox.Size().emptyOR())
+		if (UnitsPerEM >= 16 && UnitsPerEM <= 16384) // freetype will refused font if not ok
 		{
 			offset += head->WriteShort(offset, hea->XMin()); // xMin
 			offset += head->WriteShort(offset, hea->YMin()); // yMin