File indexing completed on 2024-12-22 04:09:06

 /*
  *  SPDX-FileCopyrightText: 2022 Dmitry Kazakov <dimula73@gmail.com>
  *  SPDX-FileCopyrightText: 2022 L. E. Segovia <amy@amyspark.me>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 #ifndef KOFONTLIBRARYRESOURCEUTILS_H
 #define KOFONTLIBRARYRESOURCEUTILS_H
 
 #include <ft2build.h>
 #include FT_FREETYPE_H
 #include FT_MULTIPLE_MASTERS_H
 #include <fontconfig/fontconfig.h>
 
 #include <hb-ft.h>
 #include <hb-ot.h>
 #include <hb.h>
 
 #include <QSharedPointer>
 
 // Helper to clean up only if the pointer is non-null.
 template<typename T, void (*d)(T *)>
 inline void deleter(T *ptr)
 {
     if (ptr) {
         d(ptr);
     }
 }
 
 /**
  * Shared pointer that holds a standard allocated resource.
  * We use a wrapper because by C++ standards it calls the deleter
  * unconditionally. This leads to crashes on FontConfig:
  * https://invent.kde.org/graphics/krita/-/merge_requests/1607#note_567848
  */
 template<typename T, void (*P)(T *)>
 struct KisLibraryResourcePointer : private QSharedPointer<T> {
 public:
     KisLibraryResourcePointer()
         : QSharedPointer<T>(nullptr, deleter<T, P>)
     {
     }
 
     KisLibraryResourcePointer(T *ptr)
         : QSharedPointer<T>(ptr, deleter<T, P>)
     {
     }
 
     using QSharedPointer<T>::operator->;
     using QSharedPointer<T>::reset;
 
     auto data() const
     {
         return this->get();
     }
 };
 
 /**
  * Shared pointer that holds a standard allocated resource.
  * The only difference is in the signature of the deleter.
  */
 template<typename T, int (*P)(T *)>
 struct KisFreeTypeResourcePointer : private QSharedPointer<T> {
 public:
     KisFreeTypeResourcePointer()
         : QSharedPointer<T>(nullptr, P)
     {
     }
 
     KisFreeTypeResourcePointer(T *ptr)
         : QSharedPointer<T>(ptr, P)
     {
     }
 
     using QSharedPointer<T>::operator->;
     using QSharedPointer<T>::reset;
 
     auto data() const
     {
         return this->get();
     }
 };
 
 using FcConfigUP = KisLibraryResourcePointer<FcConfig, FcConfigDestroy>;
 using FcCharSetUP = KisLibraryResourcePointer<FcCharSet, FcCharSetDestroy>;
 using FcPatternUP = KisLibraryResourcePointer<FcPattern, FcPatternDestroy>;
 using FcFontSetUP = KisLibraryResourcePointer<FcFontSet, FcFontSetDestroy>;
 using FT_LibraryUP = KisFreeTypeResourcePointer<std::remove_pointer_t<FT_Library>, FT_Done_FreeType>;
 using FT_FaceUP = KisFreeTypeResourcePointer<std::remove_pointer_t<FT_Face>, FT_Done_Face>;
 
 using hb_font_t_up = KisLibraryResourcePointer<hb_font_t, hb_font_destroy>;
 
 #endif // KOFONTLIBRARYRESOURCEUTILS_H