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dab42d20185975fb0910dadfc6aa9998d9d9e06d
geant4/source/analysis/g4tools/include/tools/sg/text
T
Gabriele Cosmo dab42d2018 Import Geant4 10.7.0 source tree
2020-12-04 12:30:43 +01:00

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.
#ifndef tools_sg_text
#define tools_sg_text
#include "nodekit"
#include "back_area"
#include "matrix"
#include "text_hershey"
#include "base_freetype"
#include "enums"
#include "rgba"
#include "noderef"
#include "mf"
#include "../colorf"
#include "../S_STRING"
namespace tools {
namespace sg {
class text : public back_area {
TOOLS_NODE(text,tools::sg::text,back_area)
public:
mf_string strings;
sf<bool> confine;
sf_vec<colorf,float> color;
sf_string font;
sf_enum<sg::font_modeling> font_modeling;
sf_string encoding;
sf<float> line_width; // for text_hershey.
sf_enum<winding_type> front_face; //no more used.
sf<bool> back_visible;
sf<bool> enforce_front_height;
sf<float> front_height;
sf<bool> enforce_front_width;
sf<float> front_width;
sf<float> wmargin_factor;
sf<float> hmargin_factor;
sf_enum<sg::hjust> hjust;
sf_enum<sg::vjust> vjust;
public:
virtual const desc_fields& node_desc_fields() const {
TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::text)
static const desc_fields s_v(parent::node_desc_fields(),17, //WARNING : have the right count.
TOOLS_ARG_FIELD_DESC(strings),
TOOLS_ARG_FIELD_DESC(confine),
TOOLS_ARG_FIELD_DESC(color),
TOOLS_ARG_FIELD_DESC_OPTS_BEG(font,8)
font_hershey().c_str(),
font_lato_regular_ttf().c_str(),
font_roboto_bold_ttf().c_str(),
font_arial_ttf().c_str(),
font_arialbd_ttf().c_str(),
font_timesbd_ttf().c_str(),
font_symbol_ttf().c_str(),
font_stixgeneral_otf().c_str(),
font_helvetica_ttf().c_str(),
font_times_roman_ttf().c_str()
TOOLS_ARG_FIELD_DESC_OPTS_END,
TOOLS_ARG_FIELD_DESC_ENUMS_BEG(font_modeling,3)
TOOLS_ARG_ENUM(font_outline),
TOOLS_ARG_ENUM(font_filled),
TOOLS_ARG_ENUM(font_pixmap)
TOOLS_ARG_FIELD_DESC_ENUMS_END,
TOOLS_ARG_FIELD_DESC(encoding),
TOOLS_ARG_FIELD_DESC(line_width),
TOOLS_ARG_FIELD_DESC_ENUMS_BEG(front_face,2)
TOOLS_ARG_ENUM(winding_ccw),
TOOLS_ARG_ENUM(winding_cw)
TOOLS_ARG_FIELD_DESC_ENUMS_END,
TOOLS_ARG_FIELD_DESC(back_visible),
TOOLS_ARG_FIELD_DESC(enforce_front_height),
TOOLS_ARG_FIELD_DESC(front_height),
TOOLS_ARG_FIELD_DESC(enforce_front_width),
TOOLS_ARG_FIELD_DESC(front_width),
TOOLS_ARG_FIELD_DESC(wmargin_factor),
TOOLS_ARG_FIELD_DESC(hmargin_factor),
TOOLS_ARG_FIELD_DESC_ENUMS_BEG(hjust,3)
TOOLS_ARG_ENUM(left),
TOOLS_ARG_ENUM(center),
TOOLS_ARG_ENUM(right)
TOOLS_ARG_FIELD_DESC_ENUMS_END,
TOOLS_ARG_FIELD_DESC_ENUMS_BEG(vjust,3)
TOOLS_ARG_ENUM(bottom),
TOOLS_ARG_ENUM(middle),
TOOLS_ARG_ENUM(top)
TOOLS_ARG_FIELD_DESC_ENUMS_END
);
return s_v;
}
private:
void add_fields(){
add_field(&strings);
add_field(&confine);
add_field(&color);
add_field(&font);
add_field(&font_modeling);
add_field(&encoding);
add_field(&line_width);
add_field(&front_face);
add_field(&back_visible);
add_field(&enforce_front_height);
add_field(&front_height);
add_field(&enforce_front_width);
add_field(&front_width);
add_field(&wmargin_factor);
add_field(&hmargin_factor);
add_field(&hjust);
add_field(&vjust);
}
public:
virtual void render(render_action& a_action) {
if(touched()) {
update_sg();
reset_touched();
}
if(back_visible.value()) m_back_sep.render(a_action);
m_sep.render(a_action);
}
virtual void pick(pick_action& a_action) {
if(touched()) {
update_sg();
reset_touched();
}
if(back_visible.value()) {
nodekit_pick(a_action,m_back_sep,this);
}
//m_sep.pick(a_action);
}
virtual void search(search_action& a_action) {
if(touched()) {
update_sg();
reset_touched();
}
parent::search(a_action);
if(a_action.done()) return;
if(a_action.do_path()) a_action.path_push(this);
if(back_visible.value()) {
m_back_sep.search(a_action);
if(a_action.done()) return;
}
m_sep.search(a_action);
if(a_action.done()) return;
if(a_action.do_path()) a_action.path_pop();
}
virtual void bbox(bbox_action& a_action) {
if(touched()) {
update_sg();
reset_touched();
}
if(back_visible.value()) m_back_sep.bbox(a_action);
m_sep.bbox(a_action);
}
public:
text(const base_freetype& a_ttf)
:parent()
,strings()
,confine(false)
,color(colorf_black())
,font(font_hershey())
,font_modeling(font_filled)
,encoding(encoding_PAW())
,line_width(1)
,front_face(winding_ccw)
,back_visible(true)
,enforce_front_height(false)
,front_height(1)
,enforce_front_width(false)
,front_width(1)
,wmargin_factor(0.9f)
,hmargin_factor(0.9f)
,hjust(left) // same default as base_text.
,vjust(middle) // not same default as base_text (which is bottom). We take middle for backcomp of confined text.
// Note that text_hershey, text_freetype is (left,bottom) justified.
,m_base_text(0)
,m_TT_text(base_freetype::create(a_ttf))
{
add_fields();
}
virtual ~text(){
delete m_TT_text;
}
public:
text(const text& a_from)
:parent(a_from)
,strings(a_from.strings)
,confine(a_from.confine)
,color(a_from.color)
,font(a_from.font)
,font_modeling(a_from.font_modeling)
,encoding(a_from.encoding)
,line_width(a_from.line_width)
,front_face(a_from.front_face)
,back_visible(a_from.back_visible)
,enforce_front_height(a_from.enforce_front_height)
,front_height(a_from.front_height)
,enforce_front_width(a_from.enforce_front_width)
,front_width(a_from.front_width)
,wmargin_factor(a_from.wmargin_factor)
,hmargin_factor(a_from.hmargin_factor)
,hjust(a_from.hjust)
,vjust(a_from.vjust)
,m_base_text(0)
,m_TT_text(base_freetype::create(*a_from.m_TT_text))
{
add_fields();
}
text& operator=(const text& a_from){
parent::operator=(a_from);
if(&a_from==this) return *this;
strings = a_from.strings;
confine = a_from.confine;
color = a_from.color;
font = a_from.font;
font_modeling = a_from.font_modeling;
encoding = a_from.encoding;
line_width = a_from.line_width;
front_face = a_from.front_face;
back_visible = a_from.back_visible;
enforce_front_height = a_from.enforce_front_height;
front_height = a_from.front_height;
enforce_front_width = a_from.enforce_front_width;
front_width = a_from.front_width;
wmargin_factor = a_from.wmargin_factor;
hmargin_factor = a_from.hmargin_factor;
hjust = a_from.hjust;
vjust = a_from.vjust;
m_base_text = 0;
//delete m_TT_text;
//m_TT_text = base_freetype::create(*a_from.m_TT_text);
return *this;
}
public:
float text_height() const {
if(!m_base_text) return 0;
return m_base_text->height;
}
/*bool get_bounds(float a_height,
float& a_mn_x,float& a_mn_y,float& a_mn_z,
float& a_mx_x,float& a_mx_y,float& a_mx_z) const {
if(!m_base_text) {
a_mn_x = 0;
a_mn_y = 0;
a_mn_z = 0;
a_mx_x = 0;
a_mx_y = 0;
a_mx_z = 0;
return false;
}
m_base_text->get_bounds(m_base_text->height,a_mn_x,a_mn_y,a_mn_z,a_mx_x,a_mx_y,a_mx_z);
return true;
}*/
bool is_empty() const {
tools_vforcit(std::string,strings.values(),it) {
const std::string& line = *it;
if(line.size()) return false;
}
return true;
}
const separator& container() const {return m_back_sep;} //must be consistent with pick().
public:
void update_sg() {
parent::update_sg();
m_sep.clear();
m_base_text = 0;
if(width.value()<=0) return;
if(height.value()<=0) return;
if(is_empty()) return;
rgba* mat = new rgba();
mat->color = color;
m_sep.add(mat);
matrix* tsf = new matrix;
m_sep.add(tsf);
float fw = width * wmargin_factor;
float fh = height * hmargin_factor;
//sf<float> zfront ?
float zz = back_visible.value()?0.01f:0;
if(font==font_hershey()) {
draw_style* ds = new draw_style;
ds->style = draw_lines;
ds->line_width = line_width;
m_sep.add(ds);
text_hershey* _text = new text_hershey;
m_base_text = _text;
_text->encoding = encoding;
_text->strings = strings;
m_sep.add(_text);
} else {
m_base_text = m_TT_text;
//ttf/arialbd 11
//01234567890
m_TT_text->font = font;
m_TT_text->strings = strings;
m_TT_text->modeling = font_modeling;
//_text->modeling.value(font_outline);
m_sep.add(new noderef(*m_TT_text));
}
if(enforce_front_height) {
m_base_text->height = front_height;
float mn_x,mn_y,mn_z;
float mx_x,mx_y,mx_z;
m_base_text->get_bounds(front_height,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
float bxw = mx_x-mn_x;
float xtrans = 0;
if(hjust==center) {
xtrans = 0;
} else if(hjust==left) {
xtrans = -fw*0.5f+bxw*0.5f;
} else if(hjust==right) {
xtrans = fw*0.5f-bxw*0.5f;
}
float bxh = mx_y-mn_y;
float ytrans = 0;
if(vjust==middle) {
ytrans = 0;
} else if(vjust==bottom) {
ytrans = -fh*0.5f+bxh*0.5f;
} else if(vjust==top) {
ytrans = fh*0.5f-bxh*0.5f;
}
float xx = -(mn_x+mx_x)*0.5F+xtrans;
float yy = -(mn_y+mx_y)*0.5F+ytrans;
tsf->set_translate(xx,yy,zz);
return;
}
if(enforce_front_width) {
float th = fh;
float mn_x,mn_y,mn_z;
float mx_x,mx_y,mx_z;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
float bxw = mx_x-mn_x;
// adjust box width :
// th -> bxw then to have front_width:
if(bxw>0) {
th = th*front_width/bxw;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
}
bxw = mx_x-mn_x;
float xtrans = 0;
if(hjust==center) {
xtrans = 0;
} else if(hjust==left) {
xtrans = -fw*0.5f+bxw*0.5f;
} else if(hjust==right) {
xtrans = fw*0.5f-bxw*0.5f;
}
float bxh = mx_y-mn_y;
float ytrans = 0;
if(vjust==middle) {
ytrans = 0;
} else if(vjust==bottom) {
ytrans = -fh*0.5f+bxh*0.5f;
} else if(vjust==top) {
ytrans = fh*0.5f-bxw*0.5f;
}
float xx = -(mn_x+mx_x)*0.5F+xtrans;
float yy = -(mn_y+mx_y)*0.5F+ytrans;
tsf->set_translate(xx,yy,zz);
m_base_text->height = bxh; //=th?
return;
}
//various automatic text height strategies :
if(confine) {
// code common to freetype and hershey :
// try to adjust text within fw x fh (by attempting to be smart !).
// the below assumes that text bounds are linear according
// "text height".
{float mn_x,mn_y,mn_z;
float mx_x,mx_y,mx_z;
float th = fh;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
float bxh = mx_y-mn_y;
// adjust box height :
// fh -> bxh then to have fh :
if(bxh>0) {
th = fh*fh/bxh;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
}
//float bxw = box.mx()[0]-box.mn()[0];
float bxw = mx_x-mn_x;
bxh = mx_y-mn_y;
if((fh>0)&&(bxh>0)){
float fasp = fw/fh;
float basp = bxw/bxh;
if(fasp>=basp) {
} else {
// adjust box width :
// th -> bxw then to have fw :
if(bxw>0) {
th = th*fw/bxw;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
}
}
}
m_base_text->height = th;
//bxw = box.mx()[0]-box.mn()[0];
bxw = mx_x-mn_x;
float xtrans = 0;
if(hjust==center) {
xtrans = 0;
} else if(hjust==left) {
xtrans = -fw*0.5f+bxw*0.5f;
} else if(hjust==right) {
xtrans = fw*0.5f-bxw*0.5f;
}
bxh = mx_y-mn_y;
float ytrans = 0;
if(vjust==middle) {
ytrans = 0;
} else if(vjust==bottom) {
ytrans = -fh*0.5f+bxh*0.5f;
} else if(vjust==top) {
ytrans = fh*0.5f-bxw*0.5f;
}
float xx = -(mn_x+mx_x)*0.5F+xtrans;
float yy = -(mn_y+mx_y)*0.5F+ytrans;
tsf->set_translate(xx,yy,zz);
}
} else {
// we arrange yy so that two aside texts
// with same height will have their text base lines aligned.
// The max height is given by ascent+descent (with descent>0).
float th = fh;
float mxh = m_base_text->ascent(th)+
m_base_text->y_advance(th)*(strings.size()-1)+
m_base_text->descent(th);
//{box3f box;
// m_base_text->get_bounds(th,box);
// float bxh = box.mx()[1]-box.mn()[1]; //should be idem mxh.
// mxh = bxh;}
if(mxh) th = fh*fh/mxh; //end/final height.
m_base_text->height = th; //then all chars will fit into th.
mxh = m_base_text->ascent(th)+
m_base_text->y_advance(th)*(strings.size()-1)+
m_base_text->descent(th);
float yy = -fh*0.5f+m_base_text->descent(th)+
m_base_text->y_advance(th)*(strings.size()-1);
//float xx = -fw*0.5F; //left justified.
//tsf->set_translate(xx,yy,zz);
{float mn_x,mn_y,mn_z;
float mx_x,mx_y,mx_z;
m_base_text->get_bounds(th,mn_x,mn_y,mn_z,mx_x,mx_y,mx_z);
float bxw = mx_x-mn_x;
float xtrans = 0;
if(hjust==center) {
xtrans = 0;
} else if(hjust==left) {
xtrans = -fw*0.5f+bxw*0.5f;
} else if(hjust==right) {
xtrans = fw*0.5f-bxw*0.5f;
}
/*
float bxh = mx_y-mn_y;
float ytrans = 0;
if(vjust==middle) {
ytrans = 0;
} else if(vjust==bottom) {
ytrans = -fh*0.5f+bxh*0.5f;
} else if(vjust==top) {
ytrans = fh*0.5f-bxw*0.5f;
}
*/
float xx = -(mn_x+mx_x)*0.5F+xtrans;
tsf->set_translate(xx,yy,zz);}
// truncate text at right if out of border :
{std::vector<std::string> labcut;
tools_vforcit(std::string,strings.values(),it) {
std::string scut;
m_base_text->truncate(*it,th,fw,scut);
labcut.push_back(scut);
}
m_base_text->strings = labcut;}
}
}
protected:
separator m_sep;
base_text* m_base_text;
base_freetype* m_TT_text; //optimize : avoid too much freetype load font.
};
}}
#endif
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