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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TAB_SIZE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TAB_SIZE_H_
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
enum class TabSizeValueType { kLength, kSpace };
struct TabSize {
DISALLOW_NEW();
TabSize(float num_or_length,
TabSizeValueType is_spaces = TabSizeValueType::kSpace)
: float_value_(num_or_length),
is_spaces_(static_cast<unsigned>(is_spaces)) {}
bool IsSpaces() const { return is_spaces_; }
float GetPixelSize(float space_width,
float letter_spacing = 0.0f,
float word_spacing = 0.0f) const {
if (!RuntimeEnabledFeatures::TabSizeWithSpacingEnabled()) {
return is_spaces_ ? float_value_ * space_width : float_value_;
}
return is_spaces_
? float_value_ * (space_width + letter_spacing + word_spacing)
: float_value_;
}
float float_value_;
unsigned is_spaces_ : 1;
};
inline bool operator==(const TabSize& a, const TabSize& b) {
return (a.float_value_ == b.float_value_) && (a.is_spaces_ == b.is_spaces_);
}
inline bool operator!=(const TabSize& a, const TabSize& b) {
return !(a == b);
}
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_TEXT_TAB_SIZE_H_
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