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godot/scene/gui/rich_text_label.cpp
Juan Linietsky fdaa2920eb Updated copyright year in all headers
2015-04-18 14:38:54 -03:00

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/*************************************************************************/
/* rich_text_label.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "rich_text_label.h"
#include "scene/scene_string_names.h"
#include "os/keyboard.h"
#include "os/os.h"
RichTextLabel::Item *RichTextLabel::_get_next_item(Item* p_item) {
if (p_item->subitems.size()) {
return p_item->subitems.front()->get();
} else if (!p_item->parent) {
return NULL;
} else if (p_item->E->next()) {
return p_item->E->next()->get();
} else {
//go up until something with a next is found
while (p_item->parent && !p_item->E->next()) {
p_item=p_item->parent;
}
if (p_item && p_item->parent)
return p_item->E->next()->get();
else
return NULL;
}
return NULL;
}
void RichTextLabel::_process_line(int &y, int p_width, int p_line, ProcessMode p_mode,const Ref<Font> &p_base_font,const Color &p_base_color,const Point2i& p_click_pos,Item **r_click_item,int *r_click_char,bool *r_outside) {
RID ci;
if (r_outside)
*r_outside=false;
if (p_mode==PROCESS_DRAW) {
ci=get_canvas_item();
if (r_click_item)
*r_click_item=NULL;
}
Line &l = lines[p_line];
Item *it = l.from;
int line_ofs=0;
int margin=_find_margin(it,p_base_font);
Align align=_find_align(it);;
int line=0;
if (p_mode!=PROCESS_CACHE) {
ERR_FAIL_INDEX(line,l.offset_caches.size());
line_ofs = l.offset_caches[line];
}
int wofs=margin;
if (p_mode!=PROCESS_CACHE && align!=ALIGN_FILL)
wofs+=line_ofs;
int begin=wofs;
Ref<Font> cfont = _find_font(it);
if (cfont.is_null())
cfont=p_base_font;
//line height should be the font height for the first time, this ensures that an empty line will never have zero height and succesive newlines are displayed
int line_height=cfont->get_height();
Variant meta;
#define NEW_LINE \
{\
if (p_mode!=PROCESS_CACHE) {\
line++;\
if (line < l.offset_caches.size())\
line_ofs=l.offset_caches[line];\
wofs=margin;\
if (align!=ALIGN_FILL)\
wofs+=line_ofs;\
} else {\
int used=wofs-margin;\
switch(align) {\
case ALIGN_LEFT: l.offset_caches.push_back(0); break;\
case ALIGN_CENTER: l.offset_caches.push_back(((p_width-margin)-used)/2); break;\
case ALIGN_RIGHT: l.offset_caches.push_back(((p_width-margin)-used)); break;\
case ALIGN_FILL: l.offset_caches.push_back(p_width-wofs); break;\
}\
l.height_caches.push_back(line_height);\
}\
y+=line_height+get_constant(SceneStringNames::get_singleton()->line_separation);\
line_height=0;\
wofs=begin;\
if (p_mode!=PROCESS_CACHE) {\
lh=line<l.height_caches.size()?l.height_caches[line]:1;\
}\
if (p_mode==PROCESS_POINTER && r_click_item && p_click_pos.y>=y && p_click_pos.y<=y+lh && p_click_pos.x<wofs) {\
if (r_outside) *r_outside=true;\
*r_click_item=it;\
*r_click_char=rchar;\
return;\
}\
}
#define ENSURE_WIDTH(m_width) \
if (wofs + m_width > p_width) {\
if (p_mode==PROCESS_POINTER && r_click_item && p_click_pos.y>=y && p_click_pos.y<=y+lh && p_click_pos.x>wofs) {\
if (r_outside) *r_outside=true; \
*r_click_item=it;\
*r_click_char=rchar;\
return;\
}\
NEW_LINE\
}
#define ADVANCE(m_width) \
{\
if (p_mode==PROCESS_POINTER && r_click_item && p_click_pos.y>=y && p_click_pos.y<=y+lh && p_click_pos.x>=wofs && p_click_pos.x<wofs+m_width) {\
if (r_outside) *r_outside=false; \
*r_click_item=it;\
*r_click_char=rchar;\
return;\
}\
wofs+=m_width;\
}
#define CHECK_HEIGHT( m_height ) \
if (m_height > line_height) {\
line_height=m_height;\
}
Color selection_fg;
Color selection_bg;
if (p_mode==PROCESS_DRAW) {
selection_fg = get_color("font_color_selected");
selection_bg = get_color("selection_color");
}
int rchar=0;
int lh=0;
while (it) {
switch(it->type) {
case ITEM_TEXT: {
ItemText *text = static_cast<ItemText*>(it);
Ref<Font> font=_find_font(it);
if (font.is_null())
font=p_base_font;
const CharType *c = text->text.c_str();
const CharType *cf=c;
int fh=font->get_height();
int ascent = font->get_ascent();
Color color;
bool underline=false;
if (p_mode==PROCESS_DRAW) {
color=_find_color(text,p_base_color);
underline=_find_underline(text);
if (_find_meta(text,&meta)) {
underline=true;
}
}
rchar=0;
while(*c) {
int end=0;
int w=0;
lh=0;
if (p_mode!=PROCESS_CACHE) {
lh=line<l.height_caches.size()?l.height_caches[line]:1;
}
while (c[end]!=0 && !(end && c[end-1]==' ' && c[end]!=' ')) {
int cw = font->get_char_size(c[end],c[end+1]).width;
w+=cw;
end++;
}
ENSURE_WIDTH(w);
{
int ofs=0;
for(int i=0;i<end;i++) {
int pofs=wofs+ofs;
if (p_mode==PROCESS_POINTER && r_click_char && p_click_pos.y>=y && p_click_pos.y<=y+lh) {
//int o = (wofs+w)-p_click_pos.x;
int cw=font->get_char_size(c[i],c[i+1]).x;
if (p_click_pos.x-cw/2>pofs) {
rchar=int((&c[i])-cf);
//print_line("GOT: "+itos(rchar));
//if (i==end-1 && p_click_pos.x+cw/2 > pofs)
// rchar++;
//int o = (wofs+w)-p_click_pos.x;
// if (o>cw/2)
// rchar++;
}
ofs+=cw;
} else if (p_mode==PROCESS_DRAW) {
bool selected=false;
if (selection.active) {
int cofs = (&c[i])-cf;
if ((text->index > selection.from->index || (text->index == selection.from->index && cofs >=selection.from_char)) && (text->index < selection.to->index || (text->index == selection.to->index && cofs <=selection.to_char))) {
selected=true;
}
}
int cw;
if (selected) {
cw = font->get_char_size(c[i],c[i+1]).x;
draw_rect(Rect2(pofs,y,cw,lh),selection_bg);
font->draw_char(ci,Point2(pofs,y+lh-(fh-ascent)),c[i],c[i+1],selection_fg);
} else {
cw=font->draw_char(ci,Point2(pofs,y+lh-(fh-ascent)),c[i],c[i+1],color);
}
if (underline) {
Color uc=color;
uc.a*=0.3;
VS::get_singleton()->canvas_item_add_line(ci,Point2(pofs,y+ascent+2),Point2(pofs+cw,y+ascent+2),uc);
}
ofs+=cw;
}
}
}
ADVANCE(w);
CHECK_HEIGHT(fh); //must be done somewhere
c=&c[end];
}
} break;
case ITEM_IMAGE: {
lh=0;
if (p_mode!=PROCESS_CACHE)
lh = line<l.height_caches.size()?l.height_caches[line]:1;
ItemImage *img = static_cast<ItemImage*>(it);
Ref<Font> font=_find_font(it);
if (font.is_null())
font=p_base_font;
if (p_mode==PROCESS_POINTER && r_click_char)
*r_click_char=0;
ENSURE_WIDTH( img->image->get_width() );
if (p_mode==PROCESS_DRAW) {
img->image->draw(ci,Point2(wofs,y+lh-font->get_descent()-img->image->get_height()));
}
ADVANCE( img->image->get_width() );
CHECK_HEIGHT( (img->image->get_height()+font->get_descent()) );
} break;
case ITEM_NEWLINE: {
lh=0;
if (p_mode!=PROCESS_CACHE)
lh = line<l.height_caches.size()?l.height_caches[line]:1;
#if 0
if (p_mode==PROCESS_POINTER && r_click_item ) {
//previous last "wrapped" line
int pl = line-1;
if (pl<0 || lines[pl].height_caches.size()==0)
break;
int py=lines[pl].offset_caches[ lines[pl].offset_caches.size() -1 ];
int ph=lines[pl].height_caches[ lines[pl].height_caches.size() -1 ];
print_line("py: "+itos(py));
print_line("ph: "+itos(ph));
rchar=0;
if (p_click_pos.y>=py && p_click_pos.y<=py+ph) {
if (r_outside) *r_outside=true;
*r_click_item=it;
*r_click_char=rchar;
return;
}
}
#endif
} break;
default: {}
}
Item *itp = it;
it = _get_next_item(it);
if (p_mode == PROCESS_POINTER && r_click_item && itp && !it && p_click_pos.y>y+lh) {
//at the end of all, return this
if (r_outside) *r_outside=true;
*r_click_item=itp;
*r_click_char=rchar;
return;
}
if (it && (p_line+1 < lines.size()) && lines[p_line+1].from==it) {
if (p_mode==PROCESS_POINTER && r_click_item && p_click_pos.y>=y && p_click_pos.y<=y+lh) {
//went to next line, but pointer was on the previous one
if (r_outside) *r_outside=true;
*r_click_item=itp;
*r_click_char=rchar;
return;
}
break;
}
}
NEW_LINE;
#undef NEW_LINE
#undef ENSURE_WIDTH
#undef ADVANCE
#undef CHECK_HEIGHT
}
void RichTextLabel::_scroll_changed(double) {
if (updating_scroll)
return;
if (scroll_follow && vscroll->get_val()>=(vscroll->get_max()-vscroll->get_page()))
scroll_following=true;
else
scroll_following=false;
update();
}
void RichTextLabel::_update_scroll() {
int total_height=0;
if (lines.size())
total_height=lines[lines.size()-1].height_accum_cache;
bool exceeds = total_height > get_size().height && scroll_active;
if (exceeds!=scroll_visible) {
if (exceeds) {
scroll_visible=true;
first_invalid_line=0;
scroll_w=vscroll->get_combined_minimum_size().width;
vscroll->show();
vscroll->set_anchor_and_margin( MARGIN_LEFT, ANCHOR_END,scroll_w);
_validate_line_caches();
} else {
scroll_visible=false;
vscroll->hide();
scroll_w=0;
_validate_line_caches();
}
}
}
void RichTextLabel::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_RESIZED: {
first_invalid_line=0; //invalidate ALL
update();
} break;
case NOTIFICATION_DRAW: {
_validate_line_caches();
_update_scroll();
RID ci=get_canvas_item();
Size2 size = get_size();
VisualServer::get_singleton()->canvas_item_set_clip(ci,true);
if (has_focus()) {
VisualServer::get_singleton()->canvas_item_add_clip_ignore(ci,true);
draw_style_box(get_stylebox("focus"),Rect2(Point2(),size));
VisualServer::get_singleton()->canvas_item_add_clip_ignore(ci,false);
}
int ofs = vscroll->get_val();
//todo, change to binary search
int from_line = 0;
while (from_line<lines.size()) {
if (lines[from_line].height_accum_cache>=ofs)
break;
from_line++;
}
if (from_line>=lines.size())
break; //nothing to draw
int y = (lines[from_line].height_accum_cache - lines[from_line].height_cache) - ofs;
Ref<Font> base_font=get_font("default_font");
Color base_color=get_color("default_color");
while (y<size.height && from_line<lines.size()) {
_process_line(y,size.width-scroll_w,from_line,PROCESS_DRAW,base_font,base_color);
from_line++;
}
}
}
}
void RichTextLabel::_find_click(const Point2i& p_click,Item **r_click_item,int *r_click_char,bool *r_outside) {
if (r_click_item)
*r_click_item=NULL;
Size2 size = get_size();
int ofs = vscroll->get_val();
//todo, change to binary search
int from_line = 0;
while (from_line<lines.size()) {
if (lines[from_line].height_accum_cache>=ofs)
break;
from_line++;
}
if (from_line>=lines.size())
return;
int y = (lines[from_line].height_accum_cache - lines[from_line].height_cache) - ofs;
Ref<Font> base_font=get_font("default_font");
Color base_color=get_color("default_color");
while (y<size.height && from_line<lines.size()) {
_process_line(y,size.width-scroll_w,from_line,PROCESS_POINTER,base_font,base_color,p_click,r_click_item,r_click_char,r_outside);
if (r_click_item && *r_click_item)
return;
from_line++;
}
}
Control::CursorShape RichTextLabel::get_cursor_shape(const Point2& p_pos) const {
if (!underline_meta || selection.click)
return CURSOR_ARROW;
if (first_invalid_line<lines.size())
return CURSOR_ARROW; //invalid
int line=0;
Item *item=NULL;
((RichTextLabel*)(this))->_find_click(p_pos,&item,&line);
if (item && ((RichTextLabel*)(this))->_find_meta(item,NULL))
return CURSOR_POINTING_HAND;
return CURSOR_ARROW;
}
void RichTextLabel::_input_event(InputEvent p_event) {
switch(p_event.type) {
case InputEvent::MOUSE_BUTTON: {
if (first_invalid_line<lines.size())
return;
const InputEventMouseButton& b = p_event.mouse_button;
if (b.button_index==BUTTON_LEFT) {
if (true) {
if (b.pressed && !b.doubleclick) {
int line=0;
Item *item=NULL;
bool outside;
_find_click(Point2i(b.x,b.y),&item,&line,&outside);
if (item) {
Variant meta;
if (!outside && _find_meta(item,&meta)) {
//meta clicked
emit_signal("meta_clicked",meta);
} else if (selection.enabled) {
selection.click=item;
selection.click_char=line;
}
}
} else if (!b.pressed) {
selection.click=NULL;
}
}
}
if (b.button_index==BUTTON_WHEEL_UP) {
if (scroll_active)
vscroll->set_val( vscroll->get_val()-vscroll->get_page()/8 );
}
if (b.button_index==BUTTON_WHEEL_DOWN) {
if (scroll_active)
vscroll->set_val( vscroll->get_val()+vscroll->get_page()/8 );
}
} break;
case InputEvent::KEY: {
const InputEventKey &k=p_event.key;
if (k.pressed) {
bool handled=true;
switch(k.scancode) {
case KEY_PAGEUP: {
if (vscroll->is_visible())
vscroll->set_val( vscroll->get_val() - vscroll->get_page() );
} break;
case KEY_PAGEDOWN: {
if (vscroll->is_visible())
vscroll->set_val( vscroll->get_val() + vscroll->get_page() );
} break;
case KEY_UP: {
if (vscroll->is_visible())
vscroll->set_val( vscroll->get_val() - get_font("default_font")->get_height() );
} break;
case KEY_DOWN: {
if (vscroll->is_visible())
vscroll->set_val( vscroll->get_val() + get_font("default_font")->get_height() );
} break;
case KEY_HOME: {
if (vscroll->is_visible())
vscroll->set_val( 0 );
} break;
case KEY_END: {
if (vscroll->is_visible())
vscroll->set_val( vscroll->get_max() );
} break;
case KEY_INSERT:
case KEY_C: {
if (k.mod.command) {
selection_copy();
} else {
handled=false;
}
} break;
default: handled=false;
}
if (handled)
accept_event();
}
} break;
case InputEvent::MOUSE_MOTION: {
if (first_invalid_line<lines.size())
return;
const InputEventMouseMotion& m = p_event.mouse_motion;
if (selection.click) {
int line=0;
Item *item=NULL;
_find_click(Point2i(m.x,m.y),&item,&line);
if (!item)
return; // do not update
selection.from=selection.click;
selection.from_char=selection.click_char;
selection.to=item;
selection.to_char=line;
bool swap=false;
if (selection.from->index > selection.to->index )
swap=true;
else if (selection.from->index == selection.to->index) {
if (selection.from_char > selection.to_char)
swap=true;
else if (selection.from_char == selection.to_char) {
selection.active=false;
return;
}
}
if (swap) {
SWAP( selection.from, selection.to );
SWAP( selection.from_char, selection.to_char );
}
selection.active=true;
update();
}
} break;
}
}
Ref<Font> RichTextLabel::_find_font(Item *p_item) {
Item *fontitem=p_item;
while(fontitem) {
if (fontitem->type==ITEM_FONT) {
ItemFont *fi = static_cast<ItemFont*>(fontitem);
return fi->font;
}
fontitem=fontitem->parent;
}
return Ref<Font>();
}
int RichTextLabel::_find_margin(Item *p_item,const Ref<Font>& p_base_font) {
Item *item=p_item;
int margin=0;
while(item) {
if (item->type==ITEM_INDENT) {
Ref<Font> font=_find_font(item);
if (font.is_null())
font=p_base_font;
ItemIndent *indent = static_cast<ItemIndent*>(item);
margin+=indent->level*tab_size*font->get_char_size(' ').width;
} else if (item->type==ITEM_LIST) {
Ref<Font> font=_find_font(item);
if (font.is_null())
font=p_base_font;
}
item=item->parent;
}
return margin;
}
RichTextLabel::Align RichTextLabel::_find_align(Item *p_item) {
Item *item=p_item;
while(item) {
if (item->type==ITEM_ALIGN) {
ItemAlign *align = static_cast<ItemAlign*>(item);
return align->align;
}
item=item->parent;
}
return default_align;
}
Color RichTextLabel::_find_color(Item *p_item,const Color& p_default_color) {
Item *item=p_item;
while(item) {
if (item->type==ITEM_COLOR) {
ItemColor *color = static_cast<ItemColor*>(item);
return color->color;
}
item=item->parent;
}
return p_default_color;
}
bool RichTextLabel::_find_underline(Item *p_item) {
Item *item=p_item;
while(item) {
if (item->type==ITEM_UNDERLINE) {
return true;
}
item=item->parent;
}
return false;
}
bool RichTextLabel::_find_meta(Item *p_item,Variant *r_meta) {
Item *item=p_item;
while(item) {
if (item->type==ITEM_META) {
ItemMeta *meta = static_cast<ItemMeta*>(item);
if (r_meta)
*r_meta=meta->meta;
return true;
}
item=item->parent;
}
return false;
}
void RichTextLabel::_validate_line_caches() {
if (first_invalid_line==lines.size())
return;
//validate invalid lines!s
Size2 size = get_size();
Ref<Font> base_font=get_font("default_font");
for(int i=first_invalid_line;i<lines.size();i++) {
int y=0;
_process_line(y,size.width-scroll_w,i,PROCESS_CACHE,base_font,Color());
lines[i].height_cache=y;
lines[i].height_accum_cache=y;
if (i>0)
lines[i].height_accum_cache+=lines[i-1].height_accum_cache;
}
int total_height=0;
if (lines.size())
total_height=lines[lines.size()-1].height_accum_cache;
first_invalid_line=lines.size();
updating_scroll=true;
vscroll->set_max(total_height);
vscroll->set_page(size.height);
if (scroll_follow && scroll_following)
vscroll->set_val(total_height-size.height);
updating_scroll=false;
}
void RichTextLabel::_invalidate_current_line() {
if (lines.size()-1 <= first_invalid_line) {
first_invalid_line=lines.size()-1;
update();
}
}
void RichTextLabel::add_text(const String& p_text) {
int pos=0;
while (pos<p_text.length()) {
int end=p_text.find("\n",pos);
String line;
bool eol=false;
if (end==-1) {
end=p_text.length();
} else {
eol=true;
}
if (pos==0 && end==p_text.length())
line=p_text;
else
line=p_text.substr(pos,end-pos);
if (line.length()>0) {
if (current->subitems.size() && current->subitems.back()->get()->type==ITEM_TEXT) {
//append text condition!
ItemText *ti = static_cast<ItemText*>(current->subitems.back()->get());
ti->text+=line;
_invalidate_current_line();
} else {
//append item condition
ItemText *item = memnew( ItemText );
item->text=line;
_add_item(item,false);
}
}
if (eol) {
ItemNewline *item = memnew( ItemNewline );
item->line=lines.size();
_add_item(item,false);
lines.resize(lines.size()+1);
lines[lines.size()-1].from=item;
_invalidate_current_line();
}
pos=end+1;
}
}
void RichTextLabel::_add_item(Item *p_item, bool p_enter) {
p_item->parent=current;
p_item->E=current->subitems.push_back(p_item);
p_item->index=current_idx++;
if (p_enter)
current=p_item;
if (lines[lines.size()-1].from==NULL) {
lines[lines.size()-1].from=p_item;
}
_invalidate_current_line();
}
void RichTextLabel::add_image(const Ref<Texture>& p_image) {
ERR_FAIL_COND(p_image.is_null());
ItemImage *item = memnew( ItemImage );
item->image=p_image;
_add_item(item,false);
}
void RichTextLabel::add_newline() {
ItemNewline *item = memnew( ItemNewline );
item->line=lines.size();
lines.resize(lines.size()+1);
_add_item(item,false);
}
void RichTextLabel::push_font(const Ref<Font>& p_font) {
ERR_FAIL_COND(p_font.is_null());
ItemFont *item = memnew( ItemFont );
item->font=p_font;
_add_item(item,true);
}
void RichTextLabel::push_color(const Color& p_color) {
ItemColor *item = memnew( ItemColor );
item->color=p_color;
_add_item(item,true);
}
void RichTextLabel::push_underline() {
ItemUnderline *item = memnew( ItemUnderline );
_add_item(item,true);
}
void RichTextLabel::push_align(Align p_align) {
lines.resize(lines.size()+1);
ItemAlign *item = memnew( ItemAlign );
item->align=p_align;
_add_item(item,true);
ItemNewline *itemnl = memnew( ItemNewline );
itemnl->line=lines.size()-1;
_add_item(itemnl,false);
}
void RichTextLabel::push_indent(int p_level) {
ERR_FAIL_COND(p_level<0);
lines.resize(lines.size()+1);
ItemIndent *item = memnew( ItemIndent );
item->level=p_level;
_add_item(item,true);
ItemNewline *itemnl = memnew( ItemNewline );
itemnl->line=lines.size()-1;
_add_item(itemnl,false);
}
void RichTextLabel::push_list(ListType p_list) {
ERR_FAIL_INDEX(p_list,3);
ItemList *item = memnew( ItemList );
item->list_type=p_list;
_add_item(item,true);
}
void RichTextLabel::push_meta(const Variant& p_meta) {
ItemMeta *item = memnew( ItemMeta );
item->meta=p_meta;
_add_item(item,true);
}
void RichTextLabel::pop() {
ERR_FAIL_COND(!current->parent);
current=current->parent;
}
void RichTextLabel::clear() {
main->_clear_children();
current=main;
lines.clear();
lines.resize(1);
first_invalid_line=0;
update();
selection.click=NULL;
selection.active=false;
current_idx=1;
}
void RichTextLabel::set_tab_size(int p_spaces) {
tab_size=p_spaces;
first_invalid_line=0;
update();
}
int RichTextLabel::get_tab_size() const {
return tab_size;
}
void RichTextLabel::set_meta_underline(bool p_underline) {
underline_meta=p_underline;
update();
}
bool RichTextLabel::is_meta_underlined() const {
return underline_meta;
}
void RichTextLabel::set_offset(int p_pixel) {
vscroll->set_val(p_pixel);
}
void RichTextLabel::set_scroll_active(bool p_active) {
if (scroll_active==p_active)
return;
scroll_active=p_active;
update();
}
bool RichTextLabel::is_scroll_active() const {
return scroll_active;
}
void RichTextLabel::set_scroll_follow(bool p_follow) {
scroll_follow=p_follow;
if (!vscroll->is_visible() || vscroll->get_val()>=(vscroll->get_max()-vscroll->get_page()))
scroll_following=true;
}
bool RichTextLabel::is_scroll_following() const {
return scroll_follow;
}
Error RichTextLabel::parse_bbcode(const String& p_bbcode) {
clear();
return append_bbcode(p_bbcode);
}
Error RichTextLabel::append_bbcode(const String& p_bbcode) {
int pos = 0;
List<String> tag_stack;
Ref<Font> base_font=get_font("default_font");
Color base_color=get_color("default_color");
while(pos < p_bbcode.length()) {
int brk_pos = p_bbcode.find("[",pos);
if (brk_pos<0)
brk_pos=p_bbcode.length();
if (brk_pos > pos) {
add_text(p_bbcode.substr(pos,brk_pos-pos));
}
if (brk_pos==p_bbcode.length())
break; //nothing else o add
int brk_end = p_bbcode.find("]",brk_pos+1);
if (brk_end==-1) {
//no close, add the rest
add_text(p_bbcode.substr(brk_pos,p_bbcode.length()-brk_pos));
break;
}
String tag = p_bbcode.substr(brk_pos+1,brk_end-brk_pos-1);
if (tag.begins_with("/")) {
bool tag_ok = tag_stack.size() && tag_stack.front()->get()==tag.substr(1,tag.length());
if (!tag_ok) {
add_text("[");
pos++;
continue;
}
tag_stack.pop_front();
pos=brk_end+1;
if (tag!="/img")
pop();
} else if (tag=="b") {
//use bold font
push_font(base_font);
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag=="i") {
//use italics font
push_font(base_font);
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag=="code") {
//use monospace font
push_font(base_font);
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag=="u") {
//use underline
push_underline();
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag=="s") {
//use strikethrough (not supported underline instead)
push_underline();
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag=="url") {
//use strikethrough (not supported underline instead)
int end=p_bbcode.find("[",brk_end);
if (end==-1)
end=p_bbcode.length();
String url = p_bbcode.substr(brk_end+1,end-brk_end-1);
push_meta(url);
pos=brk_end+1;
tag_stack.push_front(tag);
} else if (tag.begins_with("url=")) {
String url = tag.substr(4,tag.length());
push_meta(url);
pos=brk_end+1;
tag_stack.push_front("url");
} else if (tag=="img") {
//use strikethrough (not supported underline instead)
int end=p_bbcode.find("[",brk_end);
if (end==-1)
end=p_bbcode.length();
String image = p_bbcode.substr(brk_end+1,end-brk_end-1);
Ref<Texture> texture = ResourceLoader::load(image,"Texture");
if (texture.is_valid())
add_image(texture);
pos=end;
tag_stack.push_front(tag);
} else if (tag.begins_with("color=")) {
String col = tag.substr(6,tag.length());
Color color;
if (col.begins_with("#"))
color=Color::html(col);
else if (col=="aqua")
color=Color::html("#00FFFF");
else if (col=="black")
color=Color::html("#000000");
else if (col=="blue")
color=Color::html("#0000FF");
else if (col=="fuchsia")
color=Color::html("#FF00FF");
else if (col=="gray" || col=="grey")
color=Color::html("#808080");
else if (col=="green")
color=Color::html("#008000");
else if (col=="lime")
color=Color::html("#00FF00");
else if (col=="maroon")
color=Color::html("#800000");
else if (col=="navy")
color=Color::html("#000080");
else if (col=="olive")
color=Color::html("#808000");
else if (col=="purple")
color=Color::html("#800080");
else if (col=="red")
color=Color::html("#FF0000");
else if (col=="silver")
color=Color::html("#C0C0C0");
else if (col=="teal")
color=Color::html("#008008");
else if (col=="white")
color=Color::html("#FFFFFF");
else if (col=="yellow")
color=Color::html("#FFFF00");
else
color=base_color;
push_color(color);
pos=brk_end+1;
tag_stack.push_front("color");
} else if (tag.begins_with("font=")) {
String fnt = tag.substr(5,tag.length());
Ref<Font> font = ResourceLoader::load(fnt,"Font");
if (font.is_valid())
push_font(font);
else
push_font(base_font);
pos=brk_end+1;
tag_stack.push_front("font");
} else {
add_text("["); //ignore
pos=brk_pos+1;
}
}
return OK;
}
void RichTextLabel::scroll_to_line(int p_line) {
ERR_FAIL_INDEX(p_line,lines.size());
_validate_line_caches();
vscroll->set_val(lines[p_line].height_accum_cache);
}
int RichTextLabel::get_line_count() const {
return lines.size();
}
void RichTextLabel::set_selection_enabled(bool p_enabled) {
selection.enabled=p_enabled;
if (!p_enabled) {
if (selection.active) {
selection.active=false;
update();
}
set_focus_mode(FOCUS_NONE);
} else {
set_focus_mode(FOCUS_ALL);
}
}
bool RichTextLabel::search(const String& p_string,bool p_from_selection) {
ERR_FAIL_COND_V(!selection.enabled,false);
Item *it=main;
int charidx=0;
if (p_from_selection && selection.active && selection.enabled) {
it=selection.to;
charidx=selection.to_char+1;
}
int line=-1;
while(it) {
if (it->type==ITEM_TEXT) {
ItemText *t = static_cast<ItemText*>(it);
int sp = t->text.find(p_string,charidx);
if (sp!=-1) {
selection.from=it;
selection.from_char=sp;
selection.to=it;
selection.to_char=sp+p_string.length()-1;
selection.active=true;
update();
if (line==-1) {
while(it) {
if (it->type==ITEM_NEWLINE) {
line=static_cast<ItemNewline*>(it)->line;
break;
}
it=_get_next_item(it);
}
if (!it)
line=lines.size()-1;
}
scroll_to_line(line-2);
return true;
}
} else if (it->type==ITEM_NEWLINE) {
line=static_cast<ItemNewline*>(it)->line;
}
it=_get_next_item(it);
charidx=0;
}
return false;
}
void RichTextLabel::selection_copy() {
if (!selection.enabled)
return;
String text;
RichTextLabel::Item *item=selection.from;
while(item) {
if (item->type==ITEM_TEXT) {
String itext = static_cast<ItemText*>(item)->text;
if (item==selection.from && item==selection.to) {
text+=itext.substr(selection.from_char,selection.to_char-selection.from_char+1);
} else if (item==selection.from) {
text+=itext.substr(selection.from_char,itext.size());
} else if (item==selection.to) {
text+=itext.substr(0,selection.to_char+1);
} else {
text+=itext;
}
} else if (item->type==ITEM_NEWLINE) {
text+="\n";
}
if (item==selection.to)
break;
item=_get_next_item(item);
}
if (text!="") {
OS::get_singleton()->set_clipboard(text);
print_line("COPY: "+text);
}
}
bool RichTextLabel::is_selection_enabled() const {
return selection.enabled;
}
void RichTextLabel::_bind_methods() {
ObjectTypeDB::bind_method(_MD("_input_event"),&RichTextLabel::_input_event);
ObjectTypeDB::bind_method(_MD("_scroll_changed"),&RichTextLabel::_scroll_changed);
ObjectTypeDB::bind_method(_MD("add_text","text"),&RichTextLabel::add_text);
ObjectTypeDB::bind_method(_MD("add_image","image:Texture"),&RichTextLabel::add_image);
ObjectTypeDB::bind_method(_MD("newline"),&RichTextLabel::add_newline);
ObjectTypeDB::bind_method(_MD("push_font","font"),&RichTextLabel::push_font);
ObjectTypeDB::bind_method(_MD("push_color","color"),&RichTextLabel::push_color);
ObjectTypeDB::bind_method(_MD("push_align","align"),&RichTextLabel::push_align);
ObjectTypeDB::bind_method(_MD("push_indent","level"),&RichTextLabel::push_indent);
ObjectTypeDB::bind_method(_MD("push_list","type"),&RichTextLabel::push_list);
ObjectTypeDB::bind_method(_MD("push_meta","data"),&RichTextLabel::push_meta);
ObjectTypeDB::bind_method(_MD("push_underline"),&RichTextLabel::push_underline);
ObjectTypeDB::bind_method(_MD("pop"),&RichTextLabel::pop);
ObjectTypeDB::bind_method(_MD("clear"),&RichTextLabel::clear);
ObjectTypeDB::bind_method(_MD("set_meta_underline","enable"),&RichTextLabel::set_meta_underline);
ObjectTypeDB::bind_method(_MD("is_meta_underlined"),&RichTextLabel::is_meta_underlined);
ObjectTypeDB::bind_method(_MD("set_scroll_active","active"),&RichTextLabel::set_scroll_active);
ObjectTypeDB::bind_method(_MD("is_scroll_active"),&RichTextLabel::is_scroll_active);
ObjectTypeDB::bind_method(_MD("set_scroll_follow","follow"),&RichTextLabel::set_scroll_follow);
ObjectTypeDB::bind_method(_MD("is_scroll_following"),&RichTextLabel::is_scroll_following);
ObjectTypeDB::bind_method(_MD("set_tab_size","spaces"),&RichTextLabel::set_tab_size);
ObjectTypeDB::bind_method(_MD("get_tab_size"),&RichTextLabel::get_tab_size);
ObjectTypeDB::bind_method(_MD("set_selection_enabled","enabled"),&RichTextLabel::set_selection_enabled);
ObjectTypeDB::bind_method(_MD("is_selection_enabled"),&RichTextLabel::is_selection_enabled);
ObjectTypeDB::bind_method(_MD("parse_bbcode", "bbcode"),&RichTextLabel::parse_bbcode);
ObjectTypeDB::bind_method(_MD("append_bbcode", "bbcode"),&RichTextLabel::append_bbcode);
ADD_SIGNAL( MethodInfo("meta_clicked",PropertyInfo(Variant::NIL,"meta")));
BIND_CONSTANT( ALIGN_LEFT );
BIND_CONSTANT( ALIGN_CENTER );
BIND_CONSTANT( ALIGN_RIGHT );
BIND_CONSTANT( ALIGN_FILL );
BIND_CONSTANT( LIST_NUMBERS );
BIND_CONSTANT( LIST_LETTERS );
BIND_CONSTANT( LIST_DOTS );
BIND_CONSTANT( ITEM_MAIN );
BIND_CONSTANT( ITEM_TEXT );
BIND_CONSTANT( ITEM_IMAGE );
BIND_CONSTANT( ITEM_NEWLINE );
BIND_CONSTANT( ITEM_FONT );
BIND_CONSTANT( ITEM_COLOR );
BIND_CONSTANT( ITEM_UNDERLINE );
BIND_CONSTANT( ITEM_ALIGN );
BIND_CONSTANT( ITEM_INDENT );
BIND_CONSTANT( ITEM_LIST );
BIND_CONSTANT( ITEM_META );
}
RichTextLabel::RichTextLabel() {
main = memnew( ItemMain );
main->index=0;
current=main;
lines.resize(1);
lines[0].from=main;
first_invalid_line=0;
tab_size=4;
default_align=ALIGN_LEFT;
underline_meta=true;
scroll_visible=false;
scroll_follow=false;
scroll_following=false;
updating_scroll=false;
scroll_active=true;
scroll_w=0;
vscroll = memnew( VScrollBar );
add_child(vscroll);
vscroll->set_drag_slave(String(".."));
vscroll->set_step(1);
vscroll->set_anchor_and_margin( MARGIN_TOP, ANCHOR_BEGIN, 0);
vscroll->set_anchor_and_margin( MARGIN_BOTTOM, ANCHOR_END, 0);
vscroll->set_anchor_and_margin( MARGIN_RIGHT, ANCHOR_END, 0);
vscroll->connect("value_changed",this,"_scroll_changed");
vscroll->set_step(1);
vscroll->hide();
current_idx=1;
selection.click=NULL;
selection.active=false;
selection.enabled=false;
}
RichTextLabel::~RichTextLabel() {
memdelete( main );
}
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