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// Copyright 2020 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
struct CFX_TextRenderOptions {
// AliasingType defines the options for drawing pixels on the edges of the
// text. The values are defined in an incrementing order due to the latter
// aliasing type's dependency on the previous one.
enum AliasingType {
// No transparent pixels on glyph edges.
// May have transparent pixels on glyph edges.
// LCD optimization, can be enabled when anti-aliasing is allowed.
constexpr CFX_TextRenderOptions() = default;
constexpr explicit CFX_TextRenderOptions(AliasingType type)
: aliasing_type(type) {}
constexpr CFX_TextRenderOptions(const CFX_TextRenderOptions& other) = default;
CFX_TextRenderOptions& operator=(const CFX_TextRenderOptions& other) =
// Indicates whether anti-aliasing is enabled.
bool IsSmooth() const {
return aliasing_type == kAntiAliasing || aliasing_type == kLcd;
// Aliasing option for fonts.
AliasingType aliasing_type = kAntiAliasing;
// Font is CID font.
bool font_is_cid = false;
// Using the native text output available on some platforms.
bool native_text = true;
inline bool operator==(const CFX_TextRenderOptions& lhs,
const CFX_TextRenderOptions& rhs) {
return lhs.aliasing_type == rhs.aliasing_type &&
lhs.font_is_cid == rhs.font_is_cid &&
lhs.native_text == rhs.native_text;
inline bool operator!=(const CFX_TextRenderOptions& lhs,
const CFX_TextRenderOptions& rhs) {
return !(lhs == rhs);