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a9768c56c1
The codebase uses IS_APPLE instead of IS_MAC to help those who are building on the officially unsupported iOS platform. Change a recent IS_MAC usage to IS_APPLE to remain consistent and unbreak an iOS build. Change-Id: I6cde0263b3b7fb2673378f77e2cd95faff625ec2 Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/151630 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Andy Phan <andyphan@chromium.org> Commit-Queue: Andy Phan <andyphan@chromium.org> Auto-Submit: Lei Zhang <thestig@chromium.org>
99 lines
3.3 KiB
C++
99 lines
3.3 KiB
C++
// Copyright 2016 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXGE_CFX_SUBSTFONT_H_
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#define CORE_FXGE_CFX_SUBSTFONT_H_
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#include "core/fxcrt/bytestring.h"
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#include "core/fxcrt/fx_codepage.h"
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#include "core/fxge/fx_font.h"
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// Represents variations to apply on top of an existing font/face to
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// convert it to render as if it were an alternative font.
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class CFX_SubstFont {
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public:
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CFX_SubstFont();
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~CFX_SubstFont();
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#if defined(PDF_USE_SKIA)
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int GetOriginalWeight() const;
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#endif
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void UseChromeSerif();
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bool IsActualFontLoaded(const ByteString& base_font_name) const;
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// Returns the font skew angle based on whether font is a CID font.
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int GetEffectiveSkew(bool is_cid_font) const {
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return subst_cjk_ && is_cid_font ? GetSkewCJK() : GetSkew();
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}
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// Returns the font weight based on whether font is a CID font.
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int GetEffectiveWeight(bool is_cid_font) const {
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return subst_cjk_ && is_cid_font ? weight_cjk_ : weight_;
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}
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// Returns emboldening level for rendering, or negative on failure.
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int GetEmboldenLevelForRender(bool is_cid_font,
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int32_t ft_matrix_xx,
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int32_t ft_matrix_xy) const;
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// Returns emboldening level for path loading.
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int GetEmboldenLevelForLoad() const;
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// Returns estimated stem width.
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int GetEstimatedStemV() const { return weight_ / 5; }
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const ByteString& GetFamily() const { return family_; }
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int GetSkew() const;
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int GetWeight() const { return weight_; }
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int GetItalicAngle() const { return italic_angle_; }
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FX_Charset GetCharset() const { return charset_; }
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bool IsSymbolic() const { return charset_ == FX_Charset::kSymbol; }
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bool IsBold() const { return weight_ == pdfium::kFontWeightBold; }
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#if BUILDFLAG(IS_APPLE)
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bool IsMediumWeight() const { return weight_ >= 500 && weight_ <= 600; }
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#endif
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void SetFamily(const ByteString& family) { family_ = family; }
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void SetCharset(FX_Charset charset) { charset_ = charset; }
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void SetWeight(int weight) { weight_ = weight; }
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void SetItalicAngle(int angle) { italic_angle_ = angle; }
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void SetWeightCJK(int weight) { weight_cjk_ = weight; }
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void SetSubstCJK(bool subst) { subst_cjk_ = subst; }
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void SetItalicCJK(bool italic) { italic_cjk_ = italic; }
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void ConfigureExternalSubst(const ByteString& face_name,
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FX_Charset charset,
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int weight,
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bool is_italic,
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int italic_angle,
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bool face_is_bold,
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bool face_is_italic);
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void SetIsBuiltInGenericFont() { flag_mm_ = true; }
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bool IsBuiltInGenericFont() const { return flag_mm_; }
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private:
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// Returns negative values on failure.
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int GetWeightLevel(size_t index) const;
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// Clamps index to size of table.
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int GetWeightLevelForLoad(size_t index) const;
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int GetSkewCJK() const;
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ByteString family_;
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FX_Charset charset_ = FX_Charset::kANSI;
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int weight_ = 0;
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int italic_angle_ = 0;
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int weight_cjk_ = 0;
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bool subst_cjk_ = false;
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bool italic_cjk_ = false;
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bool flag_mm_ = false;
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};
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#endif // CORE_FXGE_CFX_SUBSTFONT_H_
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