Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/vcl/inc/sallayout.hxx b/vcl/inc/sallayout.hxx
new file mode 100644
index 000000000..a1b30ed36
--- /dev/null
+++ b/vcl/inc/sallayout.hxx
@@ -0,0 +1,173 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SALLAYOUT_HXX
+#define INCLUDED_VCL_INC_SALLAYOUT_HXX
+
+#include <sal/config.h>
+
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <tools/gen.hxx>
+#include <tools/degree.hxx>
+#include <i18nlangtag/languagetag.hxx>
+
+#include <vcl/dllapi.h>
+#include <vcl/devicecoordinate.hxx>
+#include <vcl/vclenum.hxx> // for typedef sal_UCS4
+#include <vcl/vcllayout.hxx>
+
+#include "ImplLayoutRuns.hxx"
+#include "impglyphitem.hxx"
+
+#include <com/sun/star/i18n/XBreakIterator.hpp>
+
+#include <hb.h>
+
+#include <iostream>
+#include <memory>
+#include <vector>
+
+#define MAX_FALLBACK 16
+
+class GenericSalLayout;
+class SalGraphics;
+enum class SalLayoutFlags;
+
+namespace vcl::font {
+    class PhysicalFontFace;
+}
+
+namespace vcl::text {
+    class TextLayoutCache;
+}
+
+class MultiSalLayout final : public SalLayout
+{
+public:
+    void            DrawText(SalGraphics&) const override;
+    sal_Int32       GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const override;
+    DeviceCoordinate FillDXArray(std::vector<DeviceCoordinate>* pDXArray) const override;
+    void            GetCaretPositions(int nArraySize, sal_Int32* pCaretXArray) const override;
+    bool            GetNextGlyph(const GlyphItem** pGlyph, DevicePoint& rPos, int& nStart,
+                                 const LogicalFontInstance** ppGlyphFont = nullptr,
+                                 const vcl::font::PhysicalFontFace** pFallbackFont = nullptr) const override;
+    bool            GetOutline(basegfx::B2DPolyPolygonVector&) const override;
+    bool            IsKashidaPosValid(int nCharPos) const override;
+    SalLayoutGlyphs GetGlyphs() const final override;
+
+    // used only by OutputDevice::ImplLayout, TODO: make friend
+    explicit        MultiSalLayout( std::unique_ptr<SalLayout> pBaseLayout );
+    void            AddFallback(std::unique_ptr<SalLayout> pFallbackLayout, ImplLayoutRuns const &);
+    // give up ownership of the initial pBaseLayout taken by the ctor
+    std::unique_ptr<SalLayout>  ReleaseBaseLayout();
+    bool            LayoutText(vcl::text::ImplLayoutArgs&, const SalLayoutGlyphsImpl*) override;
+    void            AdjustLayout(vcl::text::ImplLayoutArgs&) override;
+    void            InitFont() const override;
+
+    void SetIncomplete(bool bIncomplete);
+
+    template<typename DC>
+    void            ImplAdjustMultiLayout(vcl::text::ImplLayoutArgs& rArgs,
+                                          vcl::text::ImplLayoutArgs& rMultiArgs,
+                                          const DC* pMultiDXArray);
+
+    virtual         ~MultiSalLayout() override;
+
+private:
+                    MultiSalLayout( const MultiSalLayout& ) = delete;
+                    MultiSalLayout& operator=( const MultiSalLayout& ) = delete;
+
+    std::unique_ptr<GenericSalLayout> mpLayouts[ MAX_FALLBACK ];
+    ImplLayoutRuns  maFallbackRuns[ MAX_FALLBACK ];
+    int             mnLevel;
+    bool            mbIncomplete;
+};
+
+class VCL_DLLPUBLIC GenericSalLayout : public SalLayout
+{
+    template<typename DC> friend void MultiSalLayout::ImplAdjustMultiLayout(
+            vcl::text::ImplLayoutArgs& rArgs,
+            vcl::text::ImplLayoutArgs& rMultiArgs,
+            const DC* pMultiDXArray);
+
+public:
+                    GenericSalLayout(LogicalFontInstance&);
+                    ~GenericSalLayout() override;
+
+    void            AdjustLayout(vcl::text::ImplLayoutArgs&) final override;
+    bool            LayoutText(vcl::text::ImplLayoutArgs&, const SalLayoutGlyphsImpl*) final override;
+    void            DrawText(SalGraphics&) const final override;
+    SalLayoutGlyphs GetGlyphs() const final override;
+
+    bool            IsKashidaPosValid(int nCharPos) const final override;
+
+    // used by upper layers
+    DeviceCoordinate GetTextWidth() const final override;
+    DeviceCoordinate FillDXArray(std::vector<DeviceCoordinate>* pDXArray) const final override;
+    sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const final override;
+    void            GetCaretPositions(int nArraySize, sal_Int32* pCaretXArray) const final override;
+
+    // used by display layers
+    LogicalFontInstance& GetFont() const
+        { return *m_GlyphItems.GetFont(); }
+
+    bool            GetNextGlyph(const GlyphItem** pGlyph, DevicePoint& rPos, int& nStart,
+                                 const LogicalFontInstance** ppGlyphFont = nullptr,
+                                 const vcl::font::PhysicalFontFace** pFallbackFont = nullptr) const override;
+
+    const SalLayoutGlyphsImpl& GlyphsImpl() const { return m_GlyphItems; }
+
+private:
+    // for glyph+font+script fallback
+    void            MoveGlyph(int nStart, double nNewXPos);
+    void            DropGlyph(int nStart);
+    void            Simplify(bool bIsBase);
+
+                    GenericSalLayout( const GenericSalLayout& ) = delete;
+                    GenericSalLayout& operator=( const GenericSalLayout& ) = delete;
+
+    template<typename DC>
+    void            ApplyDXArray(const DC*, SalLayoutFlags nLayoutFlags);
+    void            Justify(DeviceCoordinate nNewWidth);
+    void            ApplyAsianKerning(const OUString& rStr);
+
+    void            GetCharWidths(std::vector<DeviceCoordinate>& rCharWidths) const;
+
+    void            SetNeedFallback(vcl::text::ImplLayoutArgs&, sal_Int32, bool);
+
+    bool            HasVerticalAlternate(sal_UCS4 aChar, sal_UCS4 aNextChar);
+
+    void            ParseFeatures(std::u16string_view name);
+
+    css::uno::Reference<css::i18n::XBreakIterator> mxBreak;
+
+    SalLayoutGlyphsImpl m_GlyphItems;
+
+    OString         msLanguage;
+    std::vector<hb_feature_t> maFeatures;
+
+    hb_set_t*       mpVertGlyphs;
+    const bool      mbFuzzing;
+};
+
+#undef SalGraphics
+
+#endif // INCLUDED_VCL_INC_SALLAYOUT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */