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agg_truetype_text.cpp
1844 lines (1596 loc) · 55.4 KB
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agg_truetype_text.cpp
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/*
Rich-Text prototype module for Rebol/View
(currently supports only Win32 platform)
author: cyphre@rebol.com
*/
#include "agg_compo.h"
#include "agg_truetype_text.h"
extern "C" void RL_Print(char *fmt, ...);//output just for testing
namespace agg
{
//constructor
rich_text::rich_text(HDC dc) :
m_dc(dc),
m_feng(dc),
m_fman(m_feng),
m_curves(m_fman.path_adaptor()),
m_caret(0)
// m_contour(m_curves)
{
// m_contour.auto_detect_orientation(false);
debug = 0;
m_gren = glyph_ren_native_mono;
m_feng.hinting(true);
m_feng.width(0);
m_feng.flip_y(true);
m_hinfo = 0;
m_color_changed = 0;
m_font = new font();
m_para = new para();
rt_push();
// Reb_Print("RICH TEXT created!\n");
}
//destructor(can be enhanced)
rich_text::~rich_text()
{
rt_reset();
delete m_font;
delete m_para;
// Reb_Print("RICH TEXT destroyed!\n");
}
text_attributes& rich_text::rt_curr_attributes()
{
return m_text_attributes[m_text_attributes.size() - 1];
}
void rich_text::rt_set_clip(int x1, int y1,int x2, int y2, int wx, int wy)
{
m_clip_x1 = x1;
m_clip_y1 = y1;
m_clip_x2 = x2;
m_clip_y2 = y2;
if (wx)
m_wrap_size_x = wx;
else
m_wrap_size_x = x2 - x1;
if (wy)
m_wrap_size_y = wy;
else
m_wrap_size_y = y2 - y1;
}
void rich_text::rt_reset()
{
// Reb_Print("RICH TEXT reset!\n");
rt_text_mode(0);
m_color_changed = 0;
wchar_t *last_text = 0;
wchar_t *last_name = 0;
unsigned i;
for(i = 0; i < m_text_attributes.size(); i++){
text_attributes attr = m_text_attributes[i];
if (attr.text != last_text && attr.text_gc == FALSE){
delete[] attr.text;
last_text = attr.text;
}
if (attr.name != last_name && !attr.name_gc){
delete[] attr.name;
last_name = attr.name;
}
}
m_text_attributes.remove_all();
m_font->name = L"\x0041\x0072\x0069\x0061\x006C"; //"Arial"
m_font->name_gc = true;
m_font->bold = 0;
m_font->italic = 0;
m_font->underline = 0;
m_font->size = 12;
m_font->color[0] = 0;
m_font->color[1] = 0;
m_font->color[2] = 0;
m_font->color[3] = 0;
m_font->offset_x = 2;
m_font->offset_y = 2;
m_font->space_x = 0;
m_font->space_y = 0;
m_font->shadow_x = 0;
m_font->shadow_y = 0;
m_font->shadow_color[0] = 0;
m_font->shadow_color[1] = 0;
m_font->shadow_color[2] = 0;
m_font->shadow_color[3] = 0;
m_font->shadow_blur = 0;
m_para->tabs = 40;
m_para->wrap = 1;
m_para->origin_x = 2;
m_para->origin_y = 2;
m_para->margin_x = 2;
m_para->margin_y = 2;
m_para->indent_x = 0;
m_para->indent_y = 0;
m_para->scroll_x = 0;
m_para->scroll_y = 0;
m_para->align = W_TEXT_LEFT;
m_para->valign = W_TEXT_TOP;
if (m_caret) {
delete m_caret;
m_caret = 0;
}
if (m_hinfo) {
delete m_hinfo;
m_hinfo = 0;
}
m_text = 0;
rt_push();
}
void rich_text::rt_attach_buffer(ren_buf* img_buf, int w, int h, int x, int y)
{
m_rbuf = img_buf;
// m_img_buf = img_buf;
m_buf_offset_x = x;
m_buf_offset_y = y;
m_buf_size_x = img_buf->width();
m_buf_size_y = img_buf->height();
rt_set_clip(
m_buf_offset_x,
m_buf_offset_y,
m_buf_size_x,
m_buf_size_y,
w,h);
m_pf.attach(*m_rbuf);
m_ren_base.attach(m_pf);
m_ren_solid.attach(m_ren_base);
m_ren_bin.attach(m_ren_base);
}
void rich_text::rt_set_font(font* fnt)
{
m_font = fnt;
}
font* rich_text::rt_get_font()
{
return m_font;
}
void rich_text::rt_set_para(para* par)
{
m_para = par;
}
para* rich_text::rt_get_para()
{
return m_para;
}
/*-------------------------------------------------
void rich_text::rt_push(int idx)
Pushes font, para and text data into the stack
--------------------------------------------------*/
void rich_text::rt_push(int idx)
{
m_text_attributes.add(text_attributes(idx));
text_attributes& attr = rt_curr_attributes();
//push font
attr.bold = m_font->bold;
attr.color = rgba8(m_font->color[0],m_font->color[1],m_font->color[2],255 - m_font->color[3]);
attr.italic = m_font->italic;
attr.name = m_font->name;
attr.name_gc = m_font->name_gc;
attr.offset_x = m_font->offset_x;
attr.offset_y = m_font->offset_y;
attr.shadow_x = m_font->shadow_x;
attr.shadow_y = m_font->shadow_y;
attr.shadow_color = rgba8(m_font->shadow_color[0],m_font->shadow_color[1],m_font->shadow_color[2],255 - m_font->shadow_color[3]);
attr.shadow_blur = m_font->shadow_blur;
attr.size = m_font->size;
attr.space_x = m_font->space_x;
attr.space_y = m_font->space_y;
attr.underline = m_font->underline;
if (m_para != 0){
attr.isPara=true;
//push para
attr.para.tabs=m_para->tabs;
attr.para.wrap=m_para->wrap;
attr.para.origin_x=m_para->origin_x;
attr.para.origin_y=m_para->origin_y;
attr.para.margin_x=m_para->margin_x;
attr.para.margin_y=m_para->margin_y;
attr.para.indent_x=m_para->indent_x;
attr.para.indent_y=m_para->indent_y;
attr.para.scroll_x=m_para->scroll_x;
attr.para.scroll_y=m_para->scroll_y;
attr.para.align = m_para->align;
attr.para.valign = m_para->valign;
}
//push text
attr.text = (wchar_t*)m_text;
//if set to TRUE don't deallocate text string..REBOL GC will handle it
attr.text_gc = m_text_gc;
}
void rich_text::rt_color_change (){
if (!m_color_changed)
m_color_changed = m_text_attributes.size() - 1;
}
void rich_text::rt_attr_to_font (text_attributes& attr){
m_font->bold = attr.bold;
m_font->color[0] = attr.color.r;
m_font->color[1] = attr.color.g;
m_font->color[2] = attr.color.b;
m_font->color[3] = 255 - attr.color.a;
m_font->italic = attr.italic;
m_font->name = attr.name;
m_font->name_gc = attr.name_gc;
m_font->offset_x = attr.offset_x;
m_font->offset_y = attr.offset_y;
m_font->shadow_x = attr.shadow_x;
m_font->shadow_y = attr.shadow_y;
m_font->shadow_blur = attr.shadow_blur;
m_font->shadow_color[0] = attr.shadow_color.r;
m_font->shadow_color[1] = attr.shadow_color.g;
m_font->shadow_color[2] = attr.shadow_color.b;
m_font->shadow_color[3] = 255 - attr.shadow_color.a;
m_font->size = attr.size;
m_font->space_x = attr.space_x;
m_font->space_y = attr.space_y;
m_font->underline = attr.underline;
}
/*-------------------------------------------------
int rich_text::rt_drop(unsigned int idx)
Drops all attributes back from given attribute index
--------------------------------------------------*/
int rich_text::rt_drop(unsigned int idx)
{
if(m_text_attributes.size() < ++idx)
{
return -1;
}
int attr_siz = m_text_attributes.size();
while (idx!=0){
text_attributes& attr = m_text_attributes[--attr_siz];
if (attr_siz == 0){
rt_attr_to_font(attr);
return 0;
}
if (attr.index == 0) {
idx--;
if (idx==0){
rt_attr_to_font(attr);
return 0;
}
}
}
return 0;
}
int rich_text::rt_set_text(REBCHR* text, REBCNT gc)
{
m_text=text;
m_text_gc = gc;
return 0;
}
/*-------------------------------------------------
rt_text_height(int idx)
Given attribute index returns text height of text attribute.
---------------------------------------------------*/
int rich_text::rt_text_height(int idx){
//get the text attribute
text_attributes& attr = m_text_attributes[idx];
//setup font engine
m_feng.height(attr.size);
m_feng.italic(attr.italic);
if (attr.bold){
m_feng.weight(FW_BOLD);
} else {
m_feng.weight(FW_DONTCARE);
}
if(m_feng.create_font(attr.name, m_gren)){
//get ascent & descent values of given font(used in case the attribute is checked before rendering)
TEXTMETRIC tm;
GetTextMetrics( m_dc, &tm );
attr.desc = tm.tmDescent - 1;
attr.asc = tm.tmAscent;
//get text height
SIZE area;
GetTextExtentPoint32( m_dc, L"\x004E", 1, &area ); //'N'
return area.cy;
}
return 0;
}
/*--------------------------------------------------------------------------------------
rt_max_line_height(int idx)
Starting from given text attribute index returns index of attr. with maximum line height.
---------------------------------------------------------------------------------------*/
int rich_text::rt_max_line_height(int idx)
{
int attrIdx = idx,maxSize = 0;
unsigned i;
//find attributes with max font size
for(i = idx; i < m_text_attributes.size(); i++){
const text_attributes& attr = m_text_attributes[i];
if (attr.index == 0) continue;
if (maxSize < attr.size){
maxSize = attr.size;
attrIdx = i;
}
// if (strchr(attr.text,'\n')) break;
if (wcschr(attr.text, L'\x000A')) break; //'\n'
}
return attrIdx;
}
/*--------------------------------------------------------------------------------------
rt_line_width(int idx, int offset)
Starting from given text attribute index and string offset returns width until newline or wrap.
---------------------------------------------------------------------------------------*/
int rich_text::rt_line_width(int idx, int offset)
{
int width = 0;
int last_width = 0;
unsigned i;
bool init = true;
bool wrap = false;
int g_adv_x;
for(i = idx; i < m_text_attributes.size(); i++){
const text_attributes& attr = m_text_attributes[i];
if (attr.index == 0) continue;
//setup font engine
m_feng.height(attr.size);
m_feng.italic(attr.italic);
if (attr.bold){
m_feng.weight(FW_BOLD);
} else {
m_feng.weight(FW_DONTCARE);
}
if(m_feng.create_font(attr.name, m_gren)){
const wchar_t* p = attr.text;
if (init){
init = false;
p+=offset;
}
while (*p){
if (p[0]==L'\x000A') return width;
if ((p[0]==L'\x0020') || (p[0]==L'\x0009')) last_width= width;
const glyph_cache* glyph = m_fman.glyph(*p);
if(glyph){
if (p[0] == L'\x0009') {
int tab_width = attr.para.tabs;
if (tab_width == 0){
tab_width = 40;
}
g_adv_x =(tab_width - (width % tab_width));
} else {
g_adv_x = (int)glyph->advance_x;
}
width+=g_adv_x + attr.space_x;
if ((attr.para.wrap) && (width >= m_wrap_size_x-m_right_hang)){
int last_word = width;
while(*p){
if ((p[0] == L'\x0020') || (p[0] == L'\x0009') || (p[0] == L'\x000A')){
break;
}
const glyph_cache* glyph = m_fman.glyph(*p);
if(glyph){
last_word+=(int)glyph->advance_x + attr.space_x;
}
p++;
}
if ((last_width == 0) || (last_word - last_width >= m_wrap_size_x-m_right_hang)){
last_width = width - g_adv_x - attr.space_x;
}
return last_width;
}
}
p++;
}
}
}
return width;
}
int rich_text::rt_size_text(REBXYF* size)
{
m_tmp_val.pair.x = size->x;
m_tmp_val.pair.y = size->y;
rt_draw_text(SIZE_TEXT);
size->x = m_tmp_val.pair.x;
size->y = m_tmp_val.pair.y;
return 0;
}
/*-------------------------------------------------------------------
cinfo* rich_text::rt_offset_to_caret(REBPAR* offset)
given screen offset coords sets the offset of caret in text dialect array
returns carret info structure for useful text handling
--------------------------------------------------------------------*/
void rich_text::rt_offset_to_caret(REBXYF offset, REBINT *element, REBINT *position){
m_tmp_val.pair.x = offset.x+1;
m_tmp_val.pair.y = offset.y;
rt_draw_text(OFFSET_TO_CARET);
*element = m_tmp_val.pair.x-1;
*position = m_tmp_val.pair.y-1;
}
/*-------------------------------------------------------------------
given the ofset of caret returns screen offset relative to face
returns carret info structure for useful text handling
--------------------------------------------------------------------*/
void rich_text::rt_caret_to_offset(REBXYF* offset, REBINT element, REBINT position){
m_tmp_val.pair.x = element+1;
m_tmp_val.pair.y = position;
rt_draw_text(CARET_TO_OFFSET);
offset->x = m_tmp_val.pair.x;
offset->y = m_tmp_val.pair.y;
}
/*-------------------------------------------------------------------
void rich_text::rt_set_hinfo(hinfo* hinfo)
sets text marking(highliting) using the hinfo structure
--------------------------------------------------------------------*/
void rich_text::rt_set_hinfo(REBXYF highlightStart, REBXYF highlightEnd){
if (!m_hinfo) m_hinfo = new hinfo();
m_hinfo->hStart.x = highlightStart.x;
m_hinfo->hStart.y = highlightStart.y;
m_hinfo->hEnd.x = highlightEnd.x;
m_hinfo->hEnd.y = highlightEnd.y;
}
/*-------------------------------------------------------------------
int rich_text::rt_text_mode(int mode)
sets the text rendering mode (0-aliased,1-antialiased,2-vectorial)
--------------------------------------------------------------------*/
int rich_text::rt_text_mode(int mode){
// Reb_Print("rt_text_mode: %d\n", mode);
switch(mode)
{
case 0:
m_gren = glyph_ren_native_mono;
m_feng.gamma(gamma_threshold(.5));
break;
case 1:
m_gren = glyph_ren_agg_gray8;
m_feng.gamma(gamma_power(1.0));
break;
case 2:
m_gren = glyph_ren_outline;
m_feng.gamma(gamma_power(1.0));
break;
default: return -1;
}
return 0;
}
/*-------------------------------------------------------------------
--------------------------------------------------------------------*/
int rich_text::rt_set_caret(REBXYF offset){
if (!m_caret) m_caret = new REBXYF();
m_caret->x = offset.x;
m_caret->y = offset.y;
return 0;
};
/*--------------------------------------------------------------------
Scrolls text stored in the attribute stack bypassing the dialect parser.
--------------------------------------------------------------------*/
int rich_text::rt_scroll(REBXYF offset){
rt_draw_text(DRAW_TEXT, &offset);
return 0;
}
void rich_text::rt_set_graphics(agg_graphics* graphics)
{
m_graphics = graphics;
m_path_storage = m_graphics->get_path_storage();
m_cattr = &m_graphics->curr_attributes();
}
/*-------------------------------------------------------------------
int rich_text::rt_draw_text(int mode, REBXYF offset)
main rendering function, the offset is optional (for fast scroll)
it is also used for o-t-c and c-t-o computations
--------------------------------------------------------------------*/
int rich_text::rt_draw_text(int mode, REBXYF* offset)
{
unsigned const attrSize = m_text_attributes.size();
if (!attrSize) return 0;
rect clip_box(m_clip_x1, m_clip_y1, m_clip_x2, m_clip_y2);
// m_contour.width(-m_weight.value() * m_height.value() * 0.05);
int glyph_count = 0;
int ox,oy;
double x0 = 0;
m_right_hang = 0;
double sx = 0;
double sy = 0;
unsigned i;
//max line height attribute
int mlha = rt_max_line_height(0);
//max line height
int lh = rt_text_height(mlha);
TEXTMETRIC tm;
//actual proccessed attribute
const text_attributes& attr = m_text_attributes[mlha];
//set vertical aligning
int valign = 0;
if (mode == DRAW_TEXT && attr.para.valign != W_TEXT_TOP){
REBXYF total_size;
rt_size_text(&total_size);
if (total_size.y == 0) total_size.y = lh;
switch (attr.para.valign){
case W_TEXT_BOTTOM:
valign = m_wrap_size_y - total_size.y;
break;
case W_TEXT_MIDDLE:
valign = (m_wrap_size_y - total_size.y) / 2;
break;
}
}
//set initial offset
if (offset !=0){
if (attr.isPara){
ox=attr.para.origin_x + attr.para.indent_x + offset->x;
oy=attr.para.origin_y + offset->y + valign;
m_right_hang = attr.para.origin_x + attr.para.margin_x + attr.para.indent_x;
}
} else {
if (attr.isPara){
ox = attr.para.origin_x + attr.para.indent_x + attr.para.scroll_x;
oy = attr.para.origin_y + attr.para.scroll_y + valign;
m_right_hang = attr.para.origin_x + attr.para.margin_x + + attr.para.indent_x;
} else {
ox = attr.offset_x;
oy = attr.offset_y + valign;
}
}
m_feng.create_font(attr.name, m_gren);
GetTextMetrics( m_dc, &tm );
m_text_pos_y = tm.tmAscent + oy + attr.space_y;
//find last text attribute
const text_attributes* last_text_attr = &attr;
for(i = attrSize-1;i>0;i--){
if (m_text_attributes[i].index != 0){
last_text_attr = &m_text_attributes[i];
break;
}
}
int prev_attr = mlha;
//precalculate the line width for aligning
int lw = 0; //no effect by default
if (attr.para.align == W_TEXT_RIGHT) {
lw = m_wrap_size_x - rt_line_width(0) - m_right_hang;
} else if (attr.para.align == W_TEXT_CENTER) {
lw = (m_wrap_size_x - rt_line_width(0) - m_right_hang) / 2;
}
//process attribute stack
for(i = 0; i < attrSize; i++){
//Reb_Print("processing attr: %d\n", i);
text_attributes& attr = m_text_attributes[i];
m_feng.height(attr.size);
m_feng.italic(attr.italic);
if (attr.bold){
m_feng.weight(FW_BOLD);
} else {
m_feng.weight(FW_DONTCARE);
}
//Reb_Print("create FONT beg\n");
if(m_feng.create_font(attr.name, m_gren))
{
// Reb_Print("create FONT OK\n");
// m_fman.precache(' ', 127);
if (i == 0){
//compute start of x coord
ABC* widths = new ABC [256];
if ( GetCharABCWidths( m_dc, 0, 255, widths) == 0 ) {
if ( GetCharWidth32( m_dc, 0, 255, (int *)widths ) == 0 ) {
if ( GetCharWidth( m_dc, 0, 255, (int *)widths ) == 0 ) {
return -3; //unable to load font information
}
}
}
for (int i=0; i<256; i++ ) {
if (widths[i].abcA < x0)
x0 = widths[i].abcA;
}
delete [] widths;
m_right_hang -= (int)x0;
x0 = ox - x0;
m_text_pos_x = x0+lw;
} /* else {
x0 = attr.para.origin_x + attr.para.indent_x + attr.para.scroll_x;
m_text_pos_x = x0+lw;
}
*/
//get ascent & descent values of given font
GetTextMetrics( m_dc, &tm );
attr.desc = tm.tmDescent - 1;
attr.asc = tm.tmAscent;
//get char_width
SIZE area;
GetTextExtentPoint32( m_dc, L"\x004E", 1, &area ); //"N"
attr.char_height = area.cy;
if (attr.index == 0) {
//skip attributes holding other than string info
continue;
}
//render string
const wchar_t* p = (wchar_t*)attr.text;
// int slen = strlen(p);
int slen = wcslen(p);
//word wrap support
int wrap = 0;
// int delim = strcspn (p," \n\t");
int delim = wcscspn (p,L"\x0020\x000A\x0009"); //" \n\t"
if ((delim > slen)){
area.cx =0;
} else {
GetTextExtentPoint32( m_dc, p , delim, &area );
area.cx+= (attr.space_x * (delim - 1));
if (area.cx >= m_wrap_size_x-m_right_hang){
area.cx = 0;
}
}
switch (mode){
case DRAW_TEXT:
{
// Reb_Print("DRAW TEXT!\n");
ren_buf tmp_rb;
pixfmt_type tmp_pf(tmp_rb);
bool shadow;
if ((attr.shadow_x !=0) || (attr.shadow_y !=0) || (attr.shadow_blur > 0)){
shadow = true;
} else {
shadow = false;
}
//Reb_Print("CLIP BOX!\n");
m_ren_base.clip_box(m_clip_x1, m_clip_y1, m_clip_x2, m_clip_y2);
//draw text mode
while(*p){
//Reb_Print("GET GLYPH!\n");
//get glyph
const glyph_cache* glyph = m_fman.glyph(*p);
//Reb_Print("GET GLYPH OK!\n");
if(glyph)
{
//Reb_Print("DRAW GLYPH!\n");
double g_adv_x = glyph->advance_x;
bool tabbing = false;
//tabbing
if ((attr.isPara) && (p[0]==L'\x0009')) {
int tab_width = attr.para.tabs;
if (tab_width == 0){
tab_width = 40;
}
g_adv_x = (tab_width - ((int)(m_text_pos_x-lw-x0) % tab_width));
tabbing = true;
}
//word wrapping
if ((attr.isPara) && (attr.para.wrap)){
if (wrap == 3) {
wrap = 1;
}
if (((p[0]==L'\x0020') || (p[0]==L'\x0009') || ((p - attr.text != 0) && ((p-1)[0]==L'\x000A'))) && (p[1]!=0)){
//get new word width for wrap check
wrap = 0;
// delim = strcspn (p+1," \n\t");
delim = wcscspn (p+1,L"\x0020\x000A\x0009"); //" \n\t"
// Reb_Print("delim: %d %d %d %d %d", strlen(p+1), slen, p, attr.text, slen + (attr.text - p) - 1 );
if (delim > slen + (attr.text - p) - 1){ //optimized! this means: (delim > (int)strlen(p+1))
area.cx =0;
} else {
GetTextExtentPoint32( m_dc, p , delim+1, &area );
area.cx+= (attr.space_x * delim);
if (area.cx >= m_wrap_size_x-m_right_hang){
area.cx = 0;
}
}
}
if (
(wrap == 0) &&
(((m_text_pos_x-lw-x0) + area.cx) >= m_wrap_size_x-m_right_hang)
){
//wrap the line
wrap = 1;
if ((p[0] !=L'\x0020') && (p[0] !=L'\x000A') && (p[0] != L'\x0009')) p--;
}
if (
(area.cx == 0) &&
(((m_text_pos_x-lw-x0) + g_adv_x) >= m_wrap_size_x-m_right_hang)
){
//truncate line
if ((m_text_pos_x-lw-x0 == 0) && (g_adv_x >= m_wrap_size_x-m_right_hang)){
//special case (1st char is wider than destination)
wrap = 3;
} else {
wrap = 1;
if ((p[0] !=L'\x0020') && (p[0] !=L'\x000A') && (p[0] != L'\x0009')) p--;
}
}
}
//line break
if (
(p[0]==L'\x000A') || //'\n'
(wrap == 1)
){
if (
(m_caret !=0) && ((p[0] == L'\x000A') || (p[0] == L'\x0020') || (p[0] == L'\x0009')) &&
(m_caret->x == (int)attr.index) &&
(m_caret->y == (p - attr.text)+1)
){
//render caret at the end of line
m_ren_base.blend_bar((int)m_text_pos_x,(int)(m_text_pos_y-m_text_attributes[prev_attr].asc),(int)(m_text_pos_x+1),(int)(m_text_pos_y+m_text_attributes[prev_attr].desc), rgba8(0,0,0,255) ,255);
}
if (&attr == last_text_attr){
//process last string attribute
if (m_text_attributes[mlha].desc == attr.desc){
m_text_pos_y += attr.asc + attr.desc + attr.space_y + 1;
} else {
m_text_pos_y += attr.asc + m_text_attributes[mlha].desc + attr.space_y + 1;
}
mlha = i;
lh = attr.char_height;
} else {
int prev_max_desc = m_text_attributes[mlha].desc;
//get new line height of next line
int next_mlha = rt_max_line_height(i+1);
int next_lh = rt_text_height(next_mlha);
// int slen = strlen(attr.text);
if ((slen != 1) && (attr.char_height <= next_lh)){
// if (strchr(p+1,'\n') != NULL) {
if (wcschr(p+1,L'\x000A') != NULL) { //'\n'
m_text_pos_y += attr.asc + prev_max_desc + attr.space_y + 1;
mlha = i;
lh = attr.char_height;
} else {
m_text_pos_y += m_text_attributes[next_mlha].asc + prev_max_desc + attr.space_y + 1;
mlha = next_mlha;
lh = next_lh;
}
} else {
if (slen == (p - attr.text)+1) {
m_text_pos_y += m_text_attributes[next_mlha].asc + prev_max_desc + attr.space_y + 1;
mlha = next_mlha;
lh = next_lh;
} else {
m_text_pos_y += attr.asc + prev_max_desc + attr.space_y + 1;
mlha = i;
lh = attr.char_height;
}
}
}
//end of 'visible area' reached
if (m_gren == glyph_ren_outline){
if ((m_text_pos_y - m_text_attributes[mlha].asc) > 2000)
//clip the vectorial text after 2k pixels - temp solution
return glyph_count;
} else if ((m_text_pos_y - m_text_attributes[mlha].asc) > m_buf_size_y) {
return glyph_count;
}
//x0 = attr.para.origin_x + attr.para.indent_x + attr.para.scroll_x;
//reset x position
if (wrap==1){
m_text_pos_x = x0 - attr.para.indent_x;
} else {
m_text_pos_x = x0;
m_text_pos_y += attr.para.indent_y;
}
p++;
//precalculate the line width for aligning
if (attr.para.align == W_TEXT_RIGHT) {
lw = m_wrap_size_x - rt_line_width(i,(p - attr.text)) - m_right_hang;
} else if (attr.para.align == W_TEXT_CENTER) {
lw = (m_wrap_size_x - rt_line_width(i,(p - attr.text)) - m_right_hang) / 2;
} else {
lw = 0; //no effect by defaut
}
m_text_pos_x+=lw;
//setup font engine
m_feng.height(attr.size);
m_feng.italic(attr.italic);
if (attr.bold){
m_feng.weight(FW_BOLD);
} else {
m_feng.weight(FW_DONTCARE);
}
m_feng.create_font(attr.name, m_gren);
prev_attr = i;
wrap = 0;
continue;
} else {
if (wrap == 0) wrap = 2;
}
prev_attr = i;
//check visibility against clipped area
rect glyph_rect = glyph->bounds;
glyph_rect.x1 += (int)m_text_pos_x;
glyph_rect.y1 += (int)m_text_pos_y;
glyph_rect.x2 += (int)m_text_pos_x;
glyph_rect.y2 += (int)m_text_pos_y;
//don't clip vectorial glyphs
bool clip = (m_gren == glyph_ren_outline) ? true : glyph_rect.clip(clip_box);
//render caret
if (
((clip) || (glyph->bounds.x1>=glyph->bounds.x2)) &&
(m_caret !=0) &&
(m_caret->x == (int)attr.index) &&
(m_caret->y == (p - attr.text)+1)
){
m_ren_base.blend_bar((int)m_text_pos_x-1,(int)(m_text_pos_y-attr.asc),(int)(m_text_pos_x),(int)(m_text_pos_y+attr.desc), rgba8(0,0,0,255) ,255);
}
bool highlight = false;
if (
(clip) || (glyph->bounds.x1>=glyph->bounds.x2)
){
//render text highliting
if (
(m_hinfo != 0)
){
if (
(m_hinfo->hStart.x < m_hinfo->hEnd.x) ||
(
(m_hinfo->hStart.x == m_hinfo->hEnd.x) &&
(m_hinfo->hStart.y < m_hinfo->hEnd.y)
)
){
m_hstart.x = m_hinfo->hStart.x;
m_hstart.y = m_hinfo->hStart.y;
m_hend.x = m_hinfo->hEnd.x;
m_hend.y = m_hinfo->hEnd.y;
} else {
m_hstart.x = m_hinfo->hEnd.x;
m_hstart.y = m_hinfo->hEnd.y;
m_hend.x = m_hinfo->hStart.x;
m_hend.y = m_hinfo->hStart.y;
}
if (
(m_hstart.x <= (int)attr.index) &&
(m_hend.x >= (int)attr.index)
){
if (
(
(m_hstart.x == (int)attr.index) &&
(m_hstart.y > (p - attr.text)+1)
) ||
(
(m_hend.x == (int)attr.index) &&
(m_hend.y < (p - attr.text)+2)
)
){
} else {
if (shadow){
m_ren_base.blend_bar((int)m_text_pos_x+attr.shadow_x,(int)(m_text_pos_y-attr.asc)+attr.shadow_y,(int)(m_text_pos_x+g_adv_x)+attr.shadow_x-1, (int)(m_text_pos_y+attr.desc)+attr.shadow_y, attr.shadow_color ,255);
}
m_ren_base.blend_bar((int)m_text_pos_x,(int)(m_text_pos_y-attr.asc),(int)(m_text_pos_x+g_adv_x), (int)(m_text_pos_y+attr.desc), rgba8(0,0,0,255) ,255);
highlight = true;
}
}
}
}
//skip rest
if (tabbing) {
m_text_pos_x += g_adv_x + attr.space_x;
p++;
wrap = 0;
continue;
}
if(clip){
//is visible - render glyph
glyph_count++;
// m_fman.add_kerning(&m_text_pos_x, &m_text_pos_y);
switch(glyph->data_type){
case glyph_data_mono:
//render aliased text
if (highlight){