177 lines
7.1 KiB
C++
177 lines
7.1 KiB
C++
#ifndef HGL_GRAPH_TEXT_LAYOUT_INCLUDE
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#define HGL_GRAPH_TEXT_LAYOUT_INCLUDE
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#include<hgl/type/StringList.h>
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#include<hgl/graph/font/FontSource.h>
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#include<hgl/graph/RenderableCreater.h>
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#include<hgl/graph/TileData.h>
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#include<hgl/type/MemBlock.h>
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namespace hgl
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{
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namespace graph
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{
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class TileFont;
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class TextRenderable;
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/**
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* 字符属性，可精确到字也可精确到段落或是全文
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*/
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struct CharLayoutAttr
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{
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bool bold =false; ///<加粗
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bool italic =false; ///<右斜
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bool underline =false; ///<下划线
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Color4f CharColor; ///<字符颜色
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Color4f BackgroundColor; ///<背影颜色
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};//struct CharLayoutAttr
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/**
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* 文本排列方向
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*/
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union TextDirection
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{
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uint8 text_direction;
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struct
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{
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uint vertical:1; ///<是否竖排
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uint right_to_left:1; ///<是否从右往左
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};
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};//union TextDirection
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/**
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* 文本对齐
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*/
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enum class TextAlign
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{
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Left=0, ///<左对齐
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Right, ///<右对齐
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Center, ///<居中
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Fill, ///<排满整行/列
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Top =Left, ///<上对齐
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Bottom =Right ///<下对齐
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};//enum class TextAlign
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/**
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* 文本排版属性
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*/
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struct TextLayoutAttributes
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{
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FontSource * font_source =nullptr; ///<字符源
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CharLayoutAttr *char_layout_attr =nullptr; ///<缺省字符排版属性
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uint8 text_direction =0; ///<文本排列方向
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TextAlign align =TextAlign::Left; ///<段落对齐
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float char_gap =0.0f; ///<字间距
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float line_gap =0.1f; ///<行间距(相对于字符高度)
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float paragraph_gap =1.0f; ///<段间距(相对于字符高度)
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float max_width =0.0f; ///<最大宽度(<=0代表无限制)
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float max_height =0.0f; ///<最大高度(<=0代表无限制)
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bool border_symbols_disable =true; ///<边界符号禁用(如行首禁用逗号)
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// bool auto_symbols_convert =true; ///<自动符号转换(如tm/(r)/(c)等)
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float space_size =0.5f; ///<半角空格尺寸(对应字符高度的系数)
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float full_space_size =1.0f; ///<全角空格尺寸(对应字符高度的系数)
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float tab_size =4.0f; ///<Tab符号尺寸(对应字符高度的系数)
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bool compress_punctuation =false; ///<压缩标点符号
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};//struct TextLayoutAttributes
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using TEXT_COORD_TYPE=int; //字符必须坐标对齐显示才能不模糊，所以这里坐标系全部使用整型坐标
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class TextLayout
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{
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protected:
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FontSource *font_source;
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TextLayoutAttributes tla;
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protected:
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TextDirection direction;
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bool endless;
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float splite_line_max_limit;
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int draw_chars_count; ///<要绘制字符列表
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Set<u32char> alone_chars; ///<不重复字符统计缓冲区
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TileUVFloatMap alone_chars_uv; ///<所有要绘制字符的uv
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struct CharDrawAttr
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{
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const CLA *cla;
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TileUVFloat uv;
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};
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ObjectList<CharDrawAttr> draw_chars_list; ///<所有字符属性列表
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template<typename T> bool preprocess(TileFont *,const T *,const int);
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protected:
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bool h_splite_to_lines(float view_limit);
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bool v_splite_to_lines(float view_limit);
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int sl_h_l2r();
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int sl_h_r2l();
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int sl_v_r2l();
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int sl_v_l2r();
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template<typename T> int SimpleLayout(TextRenderable *,TileFont *,const String<T> &); ///<简易排版
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// template<typename T> int SimpleLayout(TileFont *,const StringList<String<T>> &); ///<简易排版
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protected:
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TEXT_COORD_TYPE x,y;
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TEXT_COORD_TYPE char_height;
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TEXT_COORD_TYPE space_size;
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TEXT_COORD_TYPE full_space_size;
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TEXT_COORD_TYPE tab_size;
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TEXT_COORD_TYPE char_gap;
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TEXT_COORD_TYPE line_gap;
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TEXT_COORD_TYPE line_height;
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TEXT_COORD_TYPE paragraph_gap;
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protected:
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TextRenderable *text_render_obj;
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MemBlock<float> vertex;
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MemBlock<float> tex_coord;
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public:
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TextLayout()
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{
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direction.text_direction=0;
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draw_chars_count=0;
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text_render_obj =nullptr;
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}
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virtual ~TextLayout()=default;
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void SetTLA (const TextLayoutAttributes *_tla) {if(_tla)memcpy(&tla,_tla,sizeof(TextLayoutAttributes));}
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void SetFont (FontSource *fs) {if(fs)font_source=fs;}
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void SetTextDirection (const uint8 &td) {tla.text_direction=td;}
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void SetAlign (const TextAlign &ta) {tla.align=ta;}
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void SetMaxWidth (const float mw) {tla.max_width=mw;}
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void SetMaxHeight (const float mh) {tla.max_height=mh;}
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virtual bool Init (); ///<初始化排版
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int SimpleLayout (TextRenderable *,TileFont *,const UTF16String &); ///<简易排版
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int SimpleLayout (TextRenderable *,TileFont *,const UTF32String &); ///<简易排版
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// int SimpleLayout (TileFont *,const UTF16StringList &); ///<简易排版
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// int SimpleLayout (TileFont *,const UTF32StringList &); ///<简易排版
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};//class TextLayout
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_TEXT_LAYOUT_INCLUDE
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