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tdemultimedia/tdemid/kdisptext.cpp

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/**************************************************************************
kdisptext.cpp - The widget that displays the karaoke/lyrics text
Copyright (C) 1997,98 Antonio Larrosa Jimenez
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Send comments and bug fixes to larrosa@kde.org
or to Antonio Larrosa, Rio Arnoya, 10 5B, 29006 Malaga, Spain
***************************************************************************/
#include "kdisptext.h"
#include <tqpainter.h>
#include <tqfont.h>
#include <tqfontmetrics.h>
#include <tqrect.h>
#include <tqtextcodec.h>
#include <tdeconfig.h>
#include <tdeglobal.h>
#include <tdeglobalsettings.h>
#include <kinstance.h>
#include <tdelocale.h>
#include "version.h"
#define NUMPREVLINES 2
//#define DRAW_BOUNDING_RECTS
KDisplayText::KDisplayText(TQWidget *parent,const char *name) : TQScrollView(parent,name)
{
first_line_[0]=first_line_[1]=NULL;
linked_list_[0]=linked_list_[1]=NULL;
cursor_line_[0]=cursor_line_[1]=NULL;
cursor_[0]=cursor_[1]=NULL;
nlines_[0]=nlines_[1]=0;
linked_list=NULL;
cursor_line=NULL;
first_line=NULL;
cursor=NULL;
nlines=0;
lyrics_codec=TDEGlobal::locale()->codecForEncoding();
viewport()->setBackgroundColor(TQColor (110,110,110));
// setBackgroundMode(NoBackground);
TDEConfig *kcfg=TDEGlobal::instance()->config();
kcfg->setGroup("KMid");
typeoftextevents=kcfg->readNumEntry("TypeOfTextEvents",1);
TQFont *qtextfontdefault=new TQFont(TDEGlobalSettings::fixedFont().family(),22);
qtextfont=new TQFont(kcfg->readFontEntry("KaraokeFont",qtextfontdefault));
delete qtextfontdefault;
qfmetr=new TQFontMetrics(*qtextfont);
nvisiblelines=height()/qfmetr->lineSpacing();
autoscrollv=0;
}
KDisplayText::~KDisplayText()
{
RemoveLinkedList();
}
/*void KDisplayText::PreDestroyer(void)
{
delete qfmetr;
delete qtextfont;
}
*/
void KDisplayText::RemoveLine(kdispt_line *tmpl)
{
kdispt_ev *tmpe;
while (tmpl->ev!=NULL)
{
tmpe=tmpl->ev;
tmpl->ev=tmpe->next;
// delete tmpe->spev; Remember that the Special Events that this pointer
// points to is the same that the Player object has instantiated
delete tmpe;
}
}
void KDisplayText::RemoveLinkedList(void)
{
cursor=NULL;
cursor_line=NULL;
first_line=NULL;
linked_list=NULL;
nlines=0;
nlines_[0]=nlines_[1]=0;
first_line_[0]=first_line_[1]=NULL;
cursor_line_[0]=cursor_line_[1]=NULL;
cursor_[0]=cursor_[1]=NULL;
kdispt_line *tmpl;
for (int i=0;i<2;i++)
{
while (linked_list_[i]!=NULL)
{
RemoveLine(linked_list_[i]);
tmpl=linked_list_[i];
linked_list_[i]=linked_list_[i]->next;
delete tmpl;
}
}
}
void KDisplayText::ClearEv(bool totally)
{
RemoveLinkedList();
if (totally)
{
this->killTimers();
autoscrollv=0;
resizeContents(0,0);
viewport()->repaint(TRUE);
}
}
int KDisplayText::IsLineFeed(char c,int type)
{
switch (type)
{
case (1) : if (/*(c==0)||*/(c=='\\')||(c=='/')||(c=='@')) return 1;break;
case (5) : if (/*(c==0)||*/(c==10)||(c==13)) return 1;break;
default : if ((c==0)||(c==10)||(c==13)||(c=='\\')||(c=='/')||(c=='@')) return 1;break;
}
return 0;
}
void KDisplayText::AddEv(SpecialEvent *ev)
{
if ((ev->type==1) || (ev->type==5))
{
int idx=(ev->type==1)? 0 : 1;
if (linked_list_[idx]==NULL)
{
linked_list_[idx]=new kdispt_line;
linked_list_[idx]->next=NULL;
linked_list_[idx]->num=1;
linked_list_[idx]->ev=new kdispt_ev;
cursor_line_[idx]=linked_list_[idx];
cursor_[idx]=cursor_line_[idx]->ev;
cursor_[idx]->spev=ev;
cursor_[idx]->next=NULL;
first_line_[idx]=linked_list_[idx];
first_line=first_line_[idx];
nlines_[idx]=1;
}
else
{
if (IsLineFeed(ev->text[0],ev->type))
{
nlines_[idx]++;
cursor_line_[idx]->next=new kdispt_line;
cursor_line_[idx]=cursor_line_[idx]->next;
cursor_line_[idx]->num=nlines_[idx];
cursor_line_[idx]->ev=new kdispt_ev;
cursor_line_[idx]->next=NULL;
cursor_[idx]=cursor_line_[idx]->ev;
}
else
{
cursor_[idx]->next=new kdispt_ev;
cursor_[idx]=cursor_[idx]->next;
}
cursor_[idx]->spev=ev;
cursor_[idx]->next=NULL;
}
}
}
void KDisplayText::calculatePositions(void)
{
int typeoftextevents=1;
int fin=0;
kdispt_line *tmpl;
kdispt_ev *tmp;
int tmpx=0;
int tmpy=0;
int tmpw=0;
int maxx=0;
nlines=nlines_[(typeoftextevents==1)? 0:1];
int lineSpacing=qfmetr->lineSpacing();
int descent=qfmetr->descent();
while (!fin)
{
tmpl=linked_list_[(typeoftextevents==1)?0:1];
tmpy=lineSpacing;
maxx=0;
while (tmpl!=NULL)
{
tmp=tmpl->ev;
tmpx=5;
while (tmp!=NULL)
{
if (tmp->spev->type==typeoftextevents)
{
if (IsLineFeed(tmp->spev->text[0],typeoftextevents))
{
tmpy+=lineSpacing;
tmpx=5;
tmp->xpos=tmpx;
if (tmp->spev->text[0]!=0) tmpw=qfmetr->width(lyrics_codec->toUnicode(&tmp->spev->text[1]));
else tmpw=0;
tmp->r=qfmetr->boundingRect(lyrics_codec->toUnicode(&tmp->spev->text[1]));
}
else
{
tmp->xpos=tmpx;
tmpw=qfmetr->width(lyrics_codec->toUnicode(tmp->spev->text));
tmp->r=qfmetr->boundingRect(lyrics_codec->toUnicode(tmp->spev->text));
}
// We add 5 pixels above, below and to the right because of a
// problem with latest released Xft
tmp->r.moveBy(tmpx,tmpy-tmp->r.height()-tmp->r.y()-5);
tmp->r.setHeight(tmp->r.height()+descent+10);
tmp->r.setWidth(tmp->r.width()+5);
tmpx+=tmpw;
if (tmpx>maxx) maxx=tmpx;
}
tmp=tmp->next;
}
tmpl->ypos=tmpl->num*lineSpacing;
tmpy=tmpl->ypos;
tmpl=tmpl->next;
}
maxX[(typeoftextevents==1)?0:1]=maxx+10;
maxY[(typeoftextevents==1)?0:1]=
nlines_[(typeoftextevents==1)?0:1]*lineSpacing+descent+10;
if (typeoftextevents==1) typeoftextevents=5;
else fin=1;
}
}
kdispt_line *KDisplayText::searchYOffset(int y, kdispt_line *start)
{
kdispt_line *t=start;
while (t!=NULL)
{
// if (t->ypos+qfmetr->descent()>y) return start;
if (t->ypos+qfmetr->descent()+20>y) return start;
start=t;
t=t->next;
};
return start;
}
void KDisplayText::drawContents(TQPainter *p, int /*clipx*/, int clipy, int /*clipw*/, int cliph)
{
p->setFont(*qtextfont);
if (linked_list==NULL) return;
int i=0;
p->setPen(yellow);
int colorplayed=1;
if (cursor==NULL) colorplayed=0; // Thus, the program doesn't change the color
kdispt_line *tmpl=linked_list;
kdispt_ev *tmp;
#ifdef KDISPTEXTDEBUG
printf("events displayed %d\n",typeoftextevents);
#endif
tmpl=searchYOffset(clipy,linked_list);
int nlinestodraw=1;
kdispt_line *t=tmpl;
while ((t!=NULL)&&(t->ypos+qfmetr->descent()<clipy+cliph))
{
nlinestodraw++;
t=t->next;
}
i=0;
while ((i<nlinestodraw)&&(tmpl!=NULL))
{
tmp=tmpl->ev;
while ((tmp!=NULL)&&(tmp->spev->type!=typeoftextevents)) tmp=tmp->next;
while (tmp!=NULL)
{
if ( colorplayed &&
// (tmp->spev->absmilliseconds>=cursor->spev->absmilliseconds))
(tmp->spev->id>=cursor->spev->id))
{
p->setPen(black);
colorplayed=0;
}
if (IsLineFeed(tmp->spev->text[0],tmp->spev->type))
p->drawText(tmp->xpos,tmpl->ypos,lyrics_codec->toUnicode(&tmp->spev->text[1]));
else
p->drawText(tmp->xpos,tmpl->ypos,lyrics_codec->toUnicode(tmp->spev->text));
#ifdef DRAW_BOUNDING_RECTS
p->setPen(red);
p->drawRect(tmp->r);
p->setPen((colorplayed)?yellow:black);
#endif
tmp=tmp->next;
while ((tmp!=NULL)&&(tmp->spev->type!=typeoftextevents)) tmp=tmp->next;
}
i++;
tmpl=tmpl->next;
}
}
void KDisplayText::resizeEvent(TQResizeEvent *e)
{
TQScrollView::resizeEvent(e);
nvisiblelines=visibleHeight()/qfmetr->lineSpacing();
if ( (nlines>nvisiblelines) || (nvisiblelines==0) )
resizeContents(maxX[(typeoftextevents==1)?0:1],maxY[(typeoftextevents==1)?0:1]);
else
resizeContents(0,0);
}
void KDisplayText::CursorToHome(void)
{
/* TDEConfig *kcfg=TDEGlobal::instance()->config();
kcfg->setGroup("KMid");
typeoftextevents=kcfg->readNumEntry("TypeOfTextEvents",1);
*/
linked_list=linked_list_[(typeoftextevents==1)? 0:1];
nlines=nlines_[(typeoftextevents==1)? 0:1];
cursor_line_[0]=linked_list_[0];
first_line_[0]=cursor_line_[0];
if (cursor_line_[0]!=NULL) cursor_[0]=cursor_line_[0]->ev;
cursor_line_[1]=linked_list_[1];
first_line_[1]=cursor_line_[1];
if (cursor_line_[1]!=NULL) cursor_[1]=cursor_line_[1]->ev;
if (linked_list==NULL)
{
cursor_line=NULL;
cursor=NULL;
first_line=NULL;
}
else
{
cursor_line=linked_list;
cursor=cursor_line->ev;
first_line=linked_list;
}
nvisiblelines=visibleHeight()/qfmetr->lineSpacing();
if (nlines>nvisiblelines)
resizeContents(maxX[(typeoftextevents==1)?0:1],maxY[(typeoftextevents==1)?0:1]);
else
resizeContents(0,0);
setContentsPos(0,0);
viewport()->repaint(true);
}
void KDisplayText::PaintIn(int type)
{
bool paint=false;
if (type!=typeoftextevents)
{
int idx=(type==1)?0:1;
if (cursor_[idx]==NULL) return;
cursor_[idx]=cursor_[idx]->next;
while ((cursor_[idx]==NULL)&&(cursor_line_[idx]!=NULL))
{
cursor_line_[idx]=cursor_line_[idx]->next;
if (cursor_line_[idx]!=NULL)
{
cursor_[idx]=cursor_line_[idx]->ev;
if ((cursor_line_[idx]->num>first_line_[idx]->num+NUMPREVLINES)
&&(cursor_line_[idx]->num<first_line_[idx]->num+nvisiblelines+1))
if ((first_line_[idx]!=NULL)&&(first_line_[idx]->num+nvisiblelines<=nlines_[idx])) first_line_[idx]=first_line_[idx]->next;
}
}
return;
}
if ((cursor==NULL)||(cursor_line==NULL))
{
printf("KDispT : cursor == NULL !!!\n");
return;
}
kdispt_ev *tmp=cursor;
if (cursor->spev->type==typeoftextevents)
{
// int x,y;
// contentsToViewport(cursor->xpos,cursor_line->ypos,x,y);
cursor=cursor->next;
paint=true;
}
else
cursor=cursor->next;
while ((cursor==NULL)&&(cursor_line!=NULL))
{
cursor_line=cursor_line->next;
if (cursor_line!=NULL)
{
cursor=cursor_line->ev;
if ((cursor_line->ypos>contentsY()+(visibleHeight()*5/8))&&
(cursor_line->ypos<contentsY()+visibleHeight()+autoscrollv))
{
bool b=(autoscrollv==0);
autoscrollv+=qfmetr->lineSpacing();
if (b) startTimer(100);
else {
this->killTimers();
startTimer(100/(autoscrollv/qfmetr->lineSpacing()+1));
}
}
// scrollBy(0,qfmetr->lineSpacing());
}
}
if (paint) repaintContents(tmp->r);
}
void KDisplayText::gotomsec(ulong i)
{
int notidx=(typeoftextevents==1)?1:0;
if (linked_list_[notidx]!=NULL)
{
cursor_line_[notidx]=linked_list_[notidx];
first_line_[notidx]=cursor_line_[notidx];
cursor_[notidx]=cursor_line_[notidx]->ev;
while ((cursor_line_[notidx]!=NULL)&&(cursor_[notidx]->spev->absmilliseconds<i))
{
cursor_[notidx]=cursor_[notidx]->next;
while ((cursor_[notidx]==NULL)&&(cursor_line_[notidx]!=NULL))
{
cursor_line_[notidx]=cursor_line_[notidx]->next;
if (cursor_line_[notidx]!=NULL)
{
cursor_[notidx]=cursor_line_[notidx]->ev;
if ((cursor_line_[notidx]->num>first_line_[notidx]->num+NUMPREVLINES)
&&(cursor_line_[notidx]->num<first_line_[notidx]->num+nvisiblelines+1))
if ((first_line_[notidx]!=NULL)&&(first_line_[notidx]->num+nvisiblelines<=nlines_[notidx])) first_line_[notidx]=first_line_[notidx]->next;
}
}
}
}
if (linked_list!=NULL)
{
cursor_line=linked_list;
cursor=cursor_line->ev;
first_line=linked_list;
while ((cursor_line!=NULL)&&(cursor->spev->absmilliseconds<i))
{
cursor=cursor->next;
while ((cursor==NULL)&&(cursor_line!=NULL))
{
cursor_line=cursor_line->next;
if (cursor_line!=NULL)
{
cursor=cursor_line->ev;
if ((cursor_line->num>first_line->num+NUMPREVLINES)
&&(cursor_line->num<first_line->num+nvisiblelines+1))
if ((first_line!=NULL)&&(first_line->num+nvisiblelines<=nlines)) first_line=first_line->next;
}
}
}
this->killTimers();
autoscrollv=0;
setContentsPos(0,first_line->ypos);
viewport()->repaint();
}
}
TQFont *KDisplayText::getFont(void)
{
return qtextfont;
}
void KDisplayText::fontChanged(void)
{
TDEConfig *kcfg=TDEGlobal::instance()->config();
kcfg->setGroup("KMid");
TQFont *qtextfontdefault=new TQFont(*qtextfont);
delete qtextfont;
qtextfont=new TQFont(kcfg->readFontEntry("KaraokeFont",qtextfontdefault));
delete qtextfontdefault;
qfmetr=new TQFontMetrics(*qtextfont);
calculatePositions();
nvisiblelines=height()/qfmetr->lineSpacing();
viewport()->repaint(TRUE);
}
void KDisplayText::ChangeTypeOfTextEvents(int type)
{
int idxold=(typeoftextevents==1)?0:1;
int idxnew=(type==1)?0:1;
cursor_line_[idxold]=cursor_line;
first_line_[idxold]=first_line;
cursor_[idxold]=cursor;
linked_list=linked_list_[idxnew];
cursor_line=cursor_line_[idxnew];
first_line=first_line_[idxnew];
cursor=cursor_[idxnew];
nlines=nlines_[idxnew];
typeoftextevents=type;
if (first_line!=NULL)
{
nvisiblelines=height()/qfmetr->lineSpacing();
if (nlines>nvisiblelines)
resizeContents(maxX[(typeoftextevents==1)?0:1],maxY[(typeoftextevents==1)?0:1]);
else
resizeContents(0,0);
setContentsPos(0,first_line->ypos);
}
viewport()->repaint(TRUE);
}
int KDisplayText::ChooseTypeOfTextEvents(void)
{
return (nlines_[0]>nlines_[1])? 1 : 5;
}
void KDisplayText::ScrollDown()
{
scrollBy(0,2/**qfmetr->lineSpacing()*/);
}
void KDisplayText::ScrollUp()
{
scrollBy(0,-2/**qfmetr->lineSpacing()*/);
}
void KDisplayText::ScrollPageDown()
{
scrollBy(0,nvisiblelines*qfmetr->lineSpacing());
}
void KDisplayText::ScrollPageUp()
{
scrollBy(0,-nvisiblelines*qfmetr->lineSpacing());
}
void KDisplayText::saveLyrics(FILE *fh)
{
kdispt_line *Lptr=linked_list_[(typeoftextevents==1)? 0:1];
while (Lptr!=NULL)
{
kdispt_ev *Cptr=Lptr->ev;
if (Cptr!=NULL)
{
if (strcmp(Cptr->spev->text,"")!=0)
if (IsLineFeed(Cptr->spev->text[0],Cptr->spev->type))
fputs(&Cptr->spev->text[1],fh);
else
fputs(Cptr->spev->text,fh);
Cptr=Cptr->next;
}
while (Cptr!=NULL)
{
fputs(Cptr->spev->text,fh);
Cptr=Cptr->next;
}
fputs("\n",fh);
Lptr=Lptr->next;
}
}
void KDisplayText::timerEvent(TQTimerEvent *e)
{
int dy;
if (autoscrollv>0)
{
dy=2+autoscrollv/50;
scrollBy(0,dy);
autoscrollv-=dy;
if (autoscrollv<0)
{
killTimer(e->timerId());
autoscrollv=0;
}
}
else
if (autoscrollv<0)
{
// dy=(autoscrollv<-2*qfmetr->lineSpacing())?-7:-2;
dy=-2+autoscrollv/50;
scrollBy(0,dy);
autoscrollv-=dy;
if (autoscrollv>0)
{
killTimer(e->timerId());
autoscrollv=0;
}
}
else
killTimer(e->timerId());
}
void KDisplayText::setLyricsEncoding(const TQString &enc)
{
TQTextCodec *newcodec;
if (enc.isEmpty())
newcodec=TDEGlobal::locale()->codecForEncoding();
else
newcodec=TQTextCodec::codecForName(enc.latin1());
if (newcodec!=lyrics_codec)
{
if (newcodec)
{
lyrics_codec=newcodec;
fontChanged();
}
}
}
#include "kdisptext.moc"
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