223 lines
6 KiB
C++
223 lines
6 KiB
C++
/*************************************************************************/
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/* dynamic_font.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef DYNAMIC_FONT_H
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#define DYNAMIC_FONT_H
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#ifdef FREETYPE_ENABLED
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#include "scene/resources/font.h"
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#include "os/thread_safe.h"
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#include "io/resource_loader.h"
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#include <ft2build.h>
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#include FT_FREETYPE_H
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class DynamicFontAtSize;
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class DynamicFont;
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class DynamicFontData : public Resource {
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OBJ_TYPE(DynamicFontData,Resource);
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const uint8_t *font_mem;
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int font_mem_size;
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bool force_autohinter;
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String font_path;
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Map<int,DynamicFontAtSize*> size_cache;
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friend class DynamicFontAtSize;
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friend class DynamicFont;
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Ref<DynamicFontAtSize> _get_dynamic_font_at_size(int p_size);
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public:
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void set_font_ptr(const uint8_t* p_font_mem,int p_font_mem_size);
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void set_font_path(const String& p_path);
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void set_force_autohinter(bool p_force);
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DynamicFontData();
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~DynamicFontData();
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};
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class DynamicFontAtSize : public Reference {
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OBJ_TYPE(DynamicFontAtSize,Reference)
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_THREAD_SAFE_CLASS_
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FT_Library library; /* handle to library */
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FT_Face face; /* handle to face object */
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FT_StreamRec stream;
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int ascent;
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int descent;
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int linegap;
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int rect_margin;
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bool valid;
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struct CharTexture {
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DVector<uint8_t> imgdata;
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int texture_size;
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Vector<int> offsets;
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Ref<ImageTexture> texture;
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};
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Vector<CharTexture> textures;
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struct Character {
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bool found;
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int texture_idx;
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Rect2 rect;
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float v_align;
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float h_align;
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float advance;
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Character() { texture_idx=0; v_align=0; }
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};
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static unsigned long _ft_stream_io(FT_Stream stream, unsigned long offset, unsigned char* buffer, unsigned long count );
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static void _ft_stream_close(FT_Stream stream);
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HashMap< CharType, Character > char_map;
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_FORCE_INLINE_ void _update_char(CharType p_char);
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friend class DynamicFontData;
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Ref<DynamicFontData> font;
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int size;
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Error _load();
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protected:
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public:
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float get_height() const;
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float get_ascent() const;
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float get_descent() const;
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Size2 get_char_size(CharType p_char,CharType p_next,const Vector<Ref<DynamicFontAtSize> >& p_fallbacks) const;
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float draw_char(RID p_canvas_item, const Point2& p_pos, const CharType& p_char,const CharType& p_next,const Color& p_modulate,const Vector<Ref<DynamicFontAtSize> >& p_fallbacks) const;
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DynamicFontAtSize();
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~DynamicFontAtSize();
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};
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///////////////
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class DynamicFont : public Font {
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OBJ_TYPE( DynamicFont, Font );
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Ref<DynamicFontData> data;
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Ref<DynamicFontAtSize> data_at_size;
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Vector< Ref<DynamicFontData> > fallbacks;
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Vector< Ref<DynamicFontAtSize> > fallback_data_at_size;
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int size;
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bool valid;
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protected:
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bool _set(const StringName& p_name, const Variant& p_value);
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bool _get(const StringName& p_name,Variant &r_ret) const;
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void _get_property_list( List<PropertyInfo> *p_list) const;
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static void _bind_methods();
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public:
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void set_font_data(const Ref<DynamicFontData>& p_data);
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Ref<DynamicFontData> get_font_data() const;
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void set_size(int p_size);
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int get_size() const;
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void add_fallback(const Ref<DynamicFontData>& p_data);
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void set_fallback(int p_idx,const Ref<DynamicFontData>& p_data);
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int get_fallback_count() const;
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Ref<DynamicFontData> get_fallback(int p_idx) const;
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void remove_fallback(int p_idx);
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virtual float get_height() const;
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virtual float get_ascent() const;
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virtual float get_descent() const;
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virtual Size2 get_char_size(CharType p_char,CharType p_next=0) const;
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virtual bool is_distance_field_hint() const;
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virtual float draw_char(RID p_canvas_item, const Point2& p_pos, const CharType& p_char,const CharType& p_next=0,const Color& p_modulate=Color(1,1,1)) const;
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DynamicFont();
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~DynamicFont();
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};
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/////////////
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class ResourceFormatLoaderDynamicFont : public ResourceFormatLoader {
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public:
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virtual RES load(const String &p_path,const String& p_original_path="",Error *r_error=NULL);
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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virtual bool handles_type(const String& p_type) const;
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virtual String get_resource_type(const String &p_path) const;
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};
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#endif
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#endif
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