294 lines
9.6 KiB
C++
294 lines
9.6 KiB
C++
#include<hgl/graph/font/TextLayout.h>
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#include<hgl/type/Extent.h>
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#include<hgl/type/UnicodeBlocks.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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namespace
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{
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constexpr u16char BeginSymbols []=U16_TEXT("!),❟.:;?]}¨·ˇˉ―‖’❜”„❞…∶、。〃々❯〉》」』】〕〗！＂＇），．：；？］｀｜｝～»›"); //行首禁用符号
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constexpr u16char EndSymbols []=U16_TEXT("([{·❛‘“‟❝❮〈《「『【〔〖（．［｛«‹"); //行尾禁用符号
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constexpr u16char CurrencySymbols []=U16_TEXT("₳฿₿￠₡¢₢₵₫€￡£₤₣ƒ₲₭Ł₥₦₽₱＄$₮ℳ₶₩￦¥￥₴₸¤₰៛₪₯₠₧﷼㍐원৳₹₨৲௹"); //货币符号
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constexpr u16char VRotateSymbols []=U16_TEXT("()[]{}〈〉《》「」『』【】〔〕〖〗（）［］｛｝―‖…∶｜～"); //竖排必须旋转的符号
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constexpr int BeginSymbolsCount =(sizeof(BeginSymbols) /sizeof(u16char))-1;
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constexpr int EndSymbolsCount =(sizeof(EndSymbols) /sizeof(u16char))-1;
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constexpr int CurrencySymbolsCount=(sizeof(CurrencySymbols)/sizeof(u16char))-1;
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constexpr int VRotateSymbolsCount =(sizeof(VRotateSymbols) /sizeof(u16char))-1;
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/**
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* 4舍5入处理
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*/
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inline TEXT_COORD_TYPE out4in5(const double value)
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{
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return TEXT_COORD_TYPE(floor(value+0.5));
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}
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}//namespace
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bool TextLayout::Init()
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{
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if(!rc
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||!tla.font_source
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||!tla.char_attributes)
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return(false);
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direction.text_direction=tla.text_direction;
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if(direction.vertical)
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{
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endless =(tla.max_width<=0.0f);
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splite_line_max_limit = tla.max_width;
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}
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else
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{
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endless =(tla.max_height<=0.0f);
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splite_line_max_limit = tla.max_height;
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}
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const float origin_char_height=tla.font_source->GetCharHeight();
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x=y=0;
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char_height =out4in5(origin_char_height);
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space_size =out4in5(origin_char_height*tla.space_size);
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full_space_size =out4in5(origin_char_height*tla.full_space_size);
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tab_size =out4in5(origin_char_height*tla.tab_size);
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char_gap =out4in5(origin_char_height*tla.char_gap);
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line_gap =out4in5(origin_char_height*tla.line_gap);
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line_height =out4in5(origin_char_height+line_gap);
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paragraph_gap =out4in5(origin_char_height*tla.paragraph_gap);
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return(true);
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}
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/**
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* 预处理所有的字符，获取所有字符的宽高，以及是否标点符号等信息
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*/
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template<typename T>
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int TextLayout::preprocess(const BaseString<T> &origin_string)
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{
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const int count=hgl_min(max_chars,origin_string.Length());
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if(count<=0)
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return 0;
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chars_attributes.SetCount(count);
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draw_chars_count=0;
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CLA *cla=chars_attributes.GetData();
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const T *cp=origin_string.c_str();
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for(int i=0;i<count;i++)
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{
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cla->ch=*cp;
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if(hgl::isspace(*cp))
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{
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cla->visible=false;
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if(*cp=='\t') cla->size=tab_size; else
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if(*cp==HGL_FULL_SPACE) cla->size=full_space_size; else
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cla->size=space_size;
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}
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else
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{
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cla->visible=true; cla->size=out4in5(tla.font_source->GetCharAdvWidth(*cp));
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cla->begin_disable =hgl::strchr(BeginSymbols, *cp,BeginSymbolsCount );
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cla->end_disable =hgl::strchr(EndSymbols, *cp,EndSymbolsCount );
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if(!cla->end_disable) //货币符号同样行尾禁用
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cla->end_disable =hgl::strchr(CurrencySymbols,*cp,CurrencySymbolsCount );
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cla->vrotate =hgl::strchr(VRotateSymbols,*cp,VRotateSymbolsCount );
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cla->is_cjk =isCJK(*cp);
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cla->is_emoji =isEmoji(*cp);
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cla->is_punctuation =isPunctuation(*cp);
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if(!tla->font_source->GetCharAdvInfo(cla->adv_info,*cp))
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hgl_zero(cla->adv_info);
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else
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if(cla->adv_info.w>0&&cla->adv_info.h>0)
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++draw_chars_count;
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}
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++cp;
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++cla;
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}
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return count;
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}
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/**
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* 简易预处理所有的字符，获取所有字符的宽高，以及是否标点符号等信息
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*/
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template<typename T>
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int TextLayout::plane_preprocess(const BaseString<T> &origin_string)
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{
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const int count=hgl_min(max_chars,origin_string.Length());
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if(count<=0)
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return 0;
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chars_attributes.SetCount(count);
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draw_chars_count=0;
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CLA *cla=chars_attributes.GetData();
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const T *cp=origin_string.c_str();
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for(int i=0;i<count;i++)
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{
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cla->ch=*cp;
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if(hgl::isspace(*cp))
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{
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cla->visible=false;
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if(*cp=='\t') cla->size=tab_size; else
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if(*cp==HGL_FULL_SPACE) cla->size=full_space_size; else
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cla->size=space_size;
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}
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else
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{
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cla->visible=true; cla->size=out4in5(tla.font_source->GetCharAdvWidth(*cp));
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cla->vrotate =hgl::strchr(VRotateSymbols,*cp,VRotateSymbolsCount );
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if(!tla->font_source->GetCharAdvInfo(cla->adv_info,*cp))
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hgl_zero(cla->adv_info);
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else
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if(cla->adv_info.w>0&&cla->adv_info.h>0)
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++draw_chars_count;
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}
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++cp;
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++cla;
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}
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return count;
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}
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/**
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* 将字符串断成多行，处理标点禁用，以及英文单词禁拆分
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*/
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bool TextLayout::h_splite_to_lines(float view_limit)
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{
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const int count=chars_attributes.GetCount();
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const CLA *cla=chars_attributes.GetData();
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int cur_size=0;
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for(int i=0;i<count;i++)
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{
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}
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return(true);
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}
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bool TextLayout::v_splite_to_lines(float view_limit)
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{
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return(true);
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}
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//int TextLayout::Layout(const int mc,const BaseString<T> &str)
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//{
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// if(mc<=0
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// ||!str
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// ||!(*str))
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// return(-1);
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// max_chars=mc;
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// origin_string=str;
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// if(preprocess()<=0)
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// return(-3);
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//
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// if(!rc->Init(draw_chars_count))
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// return(-4);
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// vertex =rc->CreateVADA<VB4f>(VAN::Vertex);
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// tex_coord =rc->CreateVADA<VB4f>(VAN::TexCoord);
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// if(!vertex||!tex_coord)
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// return(-5);
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// if(direction.vertical)
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// {
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// if(!v_splite_to_lines(tla->max_height))
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// return(-4);
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// }
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// else
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// {
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// if(!h_splite_to_lines(tla->max_width))
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// return(-4);
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// }
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// return 0;
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//}
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int TextLayout::pl_h_l2r()
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{
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const int count=chars_attributes.GetCount();
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const CLA *cla=chars_attributes.GetData();
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int cur_size=0;
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int left=0,top=0;
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for(int i=0;i<count;i++)
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{
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vertex->Write(
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}
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}
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int TextLayout::pl_h_r2l(){return 0;}
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int TextLayout::pl_v_r2l(){return 0;}
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int TextLayout::pl_v_l2r(){return 0;}
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/**
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* 平面文本排版<br>
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* 不处理自动换行，仅支持\r\n换行。无任何特殊处理
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*/
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template<typename T>
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int TextLayout::PlaneLayout(const int mc,const BaseString<T> &str)
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{
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if(mc<=0||str.IsEmpty()
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return(-1);
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max_chars=hgl_min(mc,str.Length());
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if(plane_preprocess<T>(str)<=0)
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return(-3);
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if(!rc->Init(draw_chars_count))
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return(-4);
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vertex =rc->CreateVADA<VB4f>(VAN::Vertex);
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tex_coord =rc->CreateVADA<VB4f>(VAN::TexCoord);
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if(!vertex||!tex_coord)
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return(-5);
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if(direction.vertical)
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{
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if(direction.right_to_left)
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return pl_v_r2l();
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else
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return pl_v_l2r();
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}
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else
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{
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if(direction.right_to_left)
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return pl_h_r2l();
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else
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return pl_h_l2r();
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}
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return 0;
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}
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}//namespace graph
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}//namespace hgl
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