Aspose::Words::Fonts::TableSubstitutionRule::SetSubstitutes method

TableSubstitutionRule::SetSubstitutes method

Override substitute font names for given original font name.

void Aspose::Words::Fonts::TableSubstitutionRule::SetSubstitutes(const System::String &originalFontName, const System::ArrayPtr<System::String> &substituteFontNames)

Parameter	Type	Description
originalFontName	const System::String&	Original font name.
substituteFontNames	const System::ArrayPtr<System::String>&	List of alternative font names.

Examples

Shows how set font substitution rules.

auto doc = System::MakeObject<Aspose::Words::Document>();
auto builder = System::MakeObject<Aspose::Words::DocumentBuilder>(doc);

builder->get_Font()->set_Name(u"Arial");
builder->Writeln(u"Hello world!");
builder->get_Font()->set_Name(u"Amethysta");
builder->Writeln(u"The quick brown fox jumps over the lazy dog.");

System::ArrayPtr<System::SharedPtr<Aspose::Words::Fonts::FontSourceBase>> fontSources = Aspose::Words::Fonts::FontSettings::get_DefaultInstance()->GetFontsSources();

// The default font sources contain the first font that the document uses.
ASSERT_EQ(1, fontSources->get_Length());
ASSERT_TRUE(fontSources[0]->GetAvailableFonts()->LINQ_Any(static_cast<System::Func<System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo>, bool>>(static_cast<std::function<bool(System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f)>>([](System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f) -> bool
{
    return f->get_FullFontName() == u"Arial";
}))));

// The second font, "Amethysta", is unavailable.
ASSERT_FALSE(fontSources[0]->GetAvailableFonts()->LINQ_Any(static_cast<System::Func<System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo>, bool>>(static_cast<std::function<bool(System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f)>>([](System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f) -> bool
{
    return f->get_FullFontName() == u"Amethysta";
}))));

// We can configure a font substitution table which determines
// which fonts Aspose.Words will use as substitutes for unavailable fonts.
// Set two substitution fonts for "Amethysta": "Arvo", and "Courier New".
// If the first substitute is unavailable, Aspose.Words attempts to use the second substitute, and so on.
doc->set_FontSettings(System::MakeObject<Aspose::Words::Fonts::FontSettings>());
doc->get_FontSettings()->get_SubstitutionSettings()->get_TableSubstitution()->SetSubstitutes(u"Amethysta", System::MakeArray<System::String>({u"Arvo", u"Courier New"}));

// "Amethysta" is unavailable, and the substitution rule states that the first font to use as a substitute is "Arvo".
ASSERT_FALSE(fontSources[0]->GetAvailableFonts()->LINQ_Any(static_cast<System::Func<System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo>, bool>>(static_cast<std::function<bool(System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f)>>([](System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f) -> bool
{
    return f->get_FullFontName() == u"Arvo";
}))));

// "Arvo" is also unavailable, but "Courier New" is.
ASSERT_TRUE(fontSources[0]->GetAvailableFonts()->LINQ_Any(static_cast<System::Func<System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo>, bool>>(static_cast<std::function<bool(System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f)>>([](System::SharedPtr<Aspose::Words::Fonts::PhysicalFontInfo> f) -> bool
{
    return f->get_FullFontName() == u"Courier New";
}))));

// The output document will display the text that uses the "Amethysta" font formatted with "Courier New".
doc->Save(get_ArtifactsDir() + u"FontSettings.TableSubstitution.pdf");

Shows how to work with custom font substitution tables.

auto doc = System::MakeObject<Aspose::Words::Document>();
auto fontSettings = System::MakeObject<Aspose::Words::Fonts::FontSettings>();
doc->set_FontSettings(fontSettings);

// Create a new table substitution rule and load the default Windows font substitution table.
System::SharedPtr<Aspose::Words::Fonts::TableSubstitutionRule> tableSubstitutionRule = fontSettings->get_SubstitutionSettings()->get_TableSubstitution();

// If we select fonts exclusively from our folder, we will need a custom substitution table.
// We will no longer have access to the Microsoft Windows fonts,
// such as "Arial" or "Times New Roman" since they do not exist in our new font folder.
auto folderFontSource = System::MakeObject<Aspose::Words::Fonts::FolderFontSource>(get_FontsDir(), false);
fontSettings->SetFontsSources(System::MakeArray<System::SharedPtr<Aspose::Words::Fonts::FontSourceBase>>({folderFontSource}));

// Below are two ways of loading a substitution table from a file in the local file system.
// 1 -  From a stream:
{
    auto fileStream = System::MakeObject<System::IO::FileStream>(get_MyDir() + u"Font substitution rules.xml", System::IO::FileMode::Open);
    tableSubstitutionRule->Load(fileStream);
}

// 2 -  Directly from a file:
tableSubstitutionRule->Load(get_MyDir() + u"Font substitution rules.xml");

// Since we no longer have access to "Arial", our font table will first try substitute it with "Nonexistent Font".
// We do not have this font so that it will move onto the next substitute, "Kreon", found in the "MyFonts" folder.
ASPOSE_ASSERT_EQ(System::MakeArray<System::String>({u"Missing Font", u"Kreon"}), tableSubstitutionRule->GetSubstitutes(u"Arial")->LINQ_ToArray());

// We can expand this table programmatically. We will add an entry that substitutes "Times New Roman" with "Arvo"
ASSERT_TRUE(System::TestTools::IsNull(tableSubstitutionRule->GetSubstitutes(u"Times New Roman")));
tableSubstitutionRule->AddSubstitutes(u"Times New Roman", System::MakeArray<System::String>({u"Arvo"}));
ASPOSE_ASSERT_EQ(System::MakeArray<System::String>({u"Arvo"}), tableSubstitutionRule->GetSubstitutes(u"Times New Roman")->LINQ_ToArray());

// We can add a secondary fallback substitute for an existing font entry with AddSubstitutes().
// In case "Arvo" is unavailable, our table will look for "M+ 2m" as a second substitute option.
tableSubstitutionRule->AddSubstitutes(u"Times New Roman", System::MakeArray<System::String>({u"M+ 2m"}));
ASPOSE_ASSERT_EQ(System::MakeArray<System::String>({u"Arvo", u"M+ 2m"}), tableSubstitutionRule->GetSubstitutes(u"Times New Roman")->LINQ_ToArray());

// SetSubstitutes() can set a new list of substitute fonts for a font.
tableSubstitutionRule->SetSubstitutes(u"Times New Roman", System::MakeArray<System::String>({u"Squarish Sans CT", u"M+ 2m"}));
ASPOSE_ASSERT_EQ(System::MakeArray<System::String>({u"Squarish Sans CT", u"M+ 2m"}), tableSubstitutionRule->GetSubstitutes(u"Times New Roman")->LINQ_ToArray());

// Writing text in fonts that we do not have access to will invoke our substitution rules.
auto builder = System::MakeObject<Aspose::Words::DocumentBuilder>(doc);
builder->get_Font()->set_Name(u"Arial");
builder->Writeln(u"Text written in Arial, to be substituted by Kreon.");

builder->get_Font()->set_Name(u"Times New Roman");
builder->Writeln(u"Text written in Times New Roman, to be substituted by Squarish Sans CT.");

doc->Save(get_ArtifactsDir() + u"FontSettings.TableSubstitutionRule.Custom.pdf");

Aspose::Words::Fonts::TableSubstitutionRule::SetSubstitutes method

TableSubstitutionRule::SetSubstitutes method

Examples

See Also