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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/platform_font.h"
#include "ui/gfx/font_list.h"
namespace gfx {
// static
int PlatformFont::GetFontSizeDeltaIgnoringUserOrLocaleSettings(
int desired_font_size) {
int size_delta = desired_font_size - gfx::PlatformFont::kDefaultBaseFontSize;
gfx::FontList base_font = gfx::FontList().DeriveWithSizeDelta(size_delta);
// The default font may not actually be kDefaultBaseFontSize if, for example,
// the user has changed their system font sizes or the current locale has been
// overridden to use a different default font size. Adjust for the difference
// in default font sizes.
int user_or_locale_delta = 0;
if (base_font.GetFontSize() != desired_font_size) {
user_or_locale_delta = desired_font_size - base_font.GetFontSize();
base_font =
gfx::FontList().DeriveWithSizeDelta(size_delta + user_or_locale_delta);
}
DCHECK_EQ(desired_font_size, base_font.GetFontSize());
// To ensure a subsequent request from the ResourceBundle ignores the delta
// due to user or locale settings, include it here.
return base_font.GetFontSize() - gfx::PlatformFont::kDefaultBaseFontSize +
user_or_locale_delta;
}
} // namespace gfx
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