mothra: add side scrolling, controlled by left and right buttons on the keyboard. if desired, x-scrollbar can be set visible via the visxbar variable in mothra.c. (thanks, jpm_)
This commit is contained in:
stanley lieber
parent
b2c2d1ed2a
commit
20f2add592
7 changed files with 189 additions and 84 deletions
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@ -243,7 +243,7 @@ void pl_sliderupd(Image *b, Rectangle r1, int dir, int lo, int hi){
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}
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void pl_draw1(Panel *p, Image *b);
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void pl_drawall(Panel *p, Image *b){
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if(p->flags&INVIS) return;
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if(p->flags&INVIS || p->flags&IGNORE) return;
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p->b=b;
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p->draw(p);
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for(p=p->child;p;p=p->next) pl_draw1(p, b);
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@ -97,6 +97,7 @@ void pl_setrect(Panel *p, Point ul, Point avail){
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slack=subpt(space, p->childreq);
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share=pl_getshare(p->child);
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for(c=p->child;c;c=c->next){
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if(c->flags&IGNORE) continue;
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if(c->flags&EXPAND){
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switch(c->flags&PACK){
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case PACKN:
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@ -86,6 +86,8 @@ struct Panel{
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#define MAXX 0x1000 /* make x size as big as biggest sibling's */
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#define MAXY 0x2000 /* make y size as big as biggest sibling's */
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#define BITMAP 0x4000 /* text argument is a bitmap, not a string */
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/* pldefs.h flags 0x08000-0x40000 */
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#define IGNORE 0x080000 /* ignore this panel totally */
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#define USERFL 0x100000 /* start of user flag */
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/*
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@ -5,10 +5,10 @@
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* Variable-font text routines
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* These could make a separate library.
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*/
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int pl_rtfmt(Rtext *, int);
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void pl_rtdraw(Image *, Rectangle, Rtext *, int);
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void pl_rtredraw(Image *, Rectangle, Rtext *, int, int);
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Rtext *pl_rthit(Rtext *, int, Point, Point);
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Point pl_rtfmt(Rtext *, int);
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void pl_rtdraw(Image *, Rectangle, Rtext *, Point);
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void pl_rtredraw(Image *, Rectangle, Rtext *, Point, Point, int);
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Rtext *pl_rthit(Rtext *, Point, Point, Point);
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#define HITME 0x08000 /* tells ptinpanel not to look at children */
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#define LEAF 0x10000 /* newpanel will refuse to attach children */
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#define INVIS 0x20000 /* don't draw this */
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@ -67,14 +67,16 @@ int pl_space(int space, int pos, int indent){
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}
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/*
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* initialize rectangles & nextlines of text starting at t,
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* galley width is wid. Returns the total length of the text
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* galley width is wid. Returns the total width/height of the text
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*/
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int pl_rtfmt(Rtext *t, int wid){
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Point pl_rtfmt(Rtext *t, int wid){
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Rtext *tp, *eline;
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int ascent, descent, x, space, a, d, w, topy, indent;
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int ascent, descent, x, space, a, d, w, topy, indent, maxwid;
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Point p;
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p=Pt(0,0);
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eline=t;
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maxwid=0;
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while(t){
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ascent=0;
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descent=0;
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@ -147,9 +149,10 @@ int pl_rtfmt(Rtext *t, int wid){
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if(t==eline) break;
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p.x+=pl_space(t->space, p.x, indent);
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}
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if(p.x>maxwid) maxwid=p.x;
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p.y+=descent+LEAD;
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}
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return p.y;
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return Pt(maxwid, p.y);
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}
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/*
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@ -163,9 +166,9 @@ void pl_stuffbitmap(Panel *p, Image *b){
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pl_stuffbitmap(p, b);
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}
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void pl_rtdraw(Image *b, Rectangle r, Rtext *t, int yoffs){
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void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
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static Image *backup;
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Point offs, lp;
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Point lp;
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Rectangle dr;
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Image *bb;
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@ -178,11 +181,13 @@ void pl_rtdraw(Image *b, Rectangle r, Rtext *t, int yoffs){
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b=backup;
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pl_clr(b, r);
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lp=ZP;
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offs=subpt(r.min, Pt(0, yoffs));
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offs=subpt(r.min, offs);
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for(;t;t=t->next) if(!eqrect(t->r, Rect(0,0,0,0))){
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dr=rectaddpt(t->r, offs);
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if(dr.max.y>r.min.y
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&& dr.min.y<r.max.y){
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&& dr.min.y<r.max.y
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&& dr.max.x>r.min.x
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&& dr.min.x<r.max.x){
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if(t->b){
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draw(b, insetrect(dr, BORD), t->b, 0, t->b->r.min);
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if(t->flags&PL_HOT) border(b, dr, 1, display->black, ZP);
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@ -232,30 +237,51 @@ void pl_reposition(Rtext *t, Image *b, Point p, Rectangle r){
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* Rectangle r of Image b contains an image of Rtext t, offset by oldoffs.
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* Redraw the text to have offset yoffs.
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*/
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void pl_rtredraw(Image *b, Rectangle r, Rtext *t, int yoffs, int oldoffs){
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int dy, size;
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dy=oldoffs-yoffs;
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size=r.max.y-r.min.y;
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if(dy>=size || -dy>=size)
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pl_rtdraw(b, r, t, yoffs);
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else if(dy<0){
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pl_reposition(t, b, r.min,
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Rect(r.min.x, r.min.y-dy, r.max.x, r.max.y));
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pl_rtdraw(b, Rect(r.min.x, r.max.y+dy, r.max.x, r.max.y),
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t, yoffs+size+dy);
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}
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else if(dy>0){
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pl_reposition(t, b, Pt(r.min.x, r.min.y+dy),
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Rect(r.min.x, r.min.y, r.max.x, r.max.y-dy));
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pl_rtdraw(b, Rect(r.min.x, r.min.y, r.max.x, r.min.y+dy), t, yoffs);
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void pl_rtredraw(Image *b, Rectangle r, Rtext *t, Point offs, Point oldoffs, int dir){
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int d, size;
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if(dir==VERT){
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d=oldoffs.y-offs.y;
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size=r.max.y-r.min.y;
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if(d>=size || -d>=size) /* move more than screenful */
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pl_rtdraw(b, r, t, offs);
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else if(d<0){ /* down */
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pl_reposition(t, b, r.min,
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Rect(r.min.x, r.min.y-d, r.max.x, r.max.y));
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pl_rtdraw(b, Rect(r.min.x, r.max.y+d, r.max.x, r.max.y),
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t, Pt(offs.x, offs.y+size+d));
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}
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else if(d>0){ /* up */
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pl_reposition(t, b, Pt(r.min.x, r.min.y+d),
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Rect(r.min.x, r.min.y, r.max.x, r.max.y-d));
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pl_rtdraw(b, Rect(r.min.x, r.min.y, r.max.x, r.min.y+d),
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t, offs);
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}
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}else{ /* dir==HORIZ */
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d=oldoffs.x-offs.x;
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size=r.max.x-r.min.x;
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if(d>=size || -d>=size) /* move more than screenful */
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pl_rtdraw(b, r, t, offs);
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else if(d<0){ /* right */
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pl_reposition(t, b, r.min,
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Rect(r.min.x-d, r.min.y, r.max.x, r.max.y));
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pl_rtdraw(b, Rect(r.max.x+d, r.min.y, r.max.x, r.max.y),
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t, Pt(offs.x+size+d, offs.y));
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}
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else if(d>0){ /* left */
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pl_reposition(t, b, Pt(r.min.x+d, r.min.y),
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Rect(r.min.x, r.min.y, r.max.x-d, r.max.y));
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pl_rtdraw(b, Rect(r.min.x, r.min.y, r.min.x+d, r.max.y),
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t, offs);
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}
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}
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}
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Rtext *pl_rthit(Rtext *t, int yoffs, Point p, Point ul){
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Rtext *pl_rthit(Rtext *t, Point offs, Point p, Point ul){
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Rectangle r;
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Point lp;
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if(t==0) return 0;
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p.x-=ul.x;
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p.y+=yoffs-ul.y;
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p.x+=offs.x-ul.x;
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p.y+=offs.y-ul.y;
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while(t->nextline && t->nextline->topy<=p.y) t=t->nextline;
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lp=ZP;
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for(;t!=0;t=t->next){
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@ -15,11 +15,12 @@ typedef struct Textview Textview;
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struct Textview{
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void (*hit)(Panel *, int, Rtext *); /* call back to user on hit */
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Rtext *text; /* text */
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int yoffs; /* offset of top of screen */
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Point offs; /* offset of left/top of screen */
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Rtext *hitword; /* text to hilite */
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Rtext *hitfirst; /* first word in range select */
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int twid; /* text width */
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int thgt; /* text height */
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int twid; /* text width (visible) */
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int thgt; /* text height (total) */
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int maxwid; /* width of longest line */
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Point minsize; /* smallest acceptible window size */
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int buttons;
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};
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@ -27,25 +28,35 @@ struct Textview{
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void pl_setscrpos(Panel *p, Textview *tp, Rectangle r){
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Panel *sb;
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int lo, hi;
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lo=tp->yoffs;
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lo=tp->offs.y;
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hi=lo+r.max.y-r.min.y; /* wrong? */
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sb=p->yscroller;
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if(sb && sb->setscrollbar) sb->setscrollbar(sb, lo, hi, tp->thgt);
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sb=p->yscroller;
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if(sb && sb->setscrollbar)
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sb->setscrollbar(sb, lo, hi, tp->thgt);
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lo=tp->offs.x;
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hi=lo+r.max.x-r.min.x;
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sb=p->xscroller;
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if(sb && sb->setscrollbar)
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sb->setscrollbar(sb, lo, hi, tp->maxwid);
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}
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void pl_drawtextview(Panel *p){
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int twid;
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Rectangle r;
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Textview *tp;
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Point size;
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tp=p->data;
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r=pl_outline(p->b, p->r, UP);
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twid=r.max.x-r.min.x;
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if(twid!=tp->twid){
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tp->twid=twid;
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tp->thgt=pl_rtfmt(tp->text, tp->twid);
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p->scr.size.y=tp->thgt;
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size=pl_rtfmt(tp->text, tp->twid);
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p->scr.size.x=tp->maxwid=size.x;
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p->scr.size.y=tp->thgt=size.y;
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}
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p->scr.pos.y=tp->yoffs;
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pl_rtdraw(p->b, r, tp->text, tp->yoffs);
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p->scr.pos = tp->offs;
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pl_rtdraw(p->b, r, tp->text, tp->offs);
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pl_setscrpos(p, tp, r);
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}
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/*
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@ -62,7 +73,6 @@ int pl_hittextview(Panel *p, Mouse *m){
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Textview *tp;
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tp=p->data;
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hitme=0;
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oldstate=p->state;
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oldhitword=tp->hitword;
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@ -78,7 +88,7 @@ int pl_hittextview(Panel *p, Mouse *m){
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ul=p->r.min;
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size=subpt(p->r.max, p->r.min);
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pl_interior(p->state, &ul, &size);
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tp->hitword=pl_rthit(tp->text, tp->yoffs, m->xy, ul);
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tp->hitword=pl_rthit(tp->text, tp->offs, m->xy, ul);
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if(tp->hitword==0)
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if(oldhitword!=0 && oldstate==DOWN)
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tp->hitword=oldhitword;
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@ -108,37 +118,63 @@ int pl_hittextview(Panel *p, Mouse *m){
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return 0;
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}
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void pl_scrolltextview(Panel *p, int dir, int buttons, int num, int den){
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int yoffs;
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int xoffs, yoffs;
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Point ul, size;
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Textview *tp;
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Rectangle r;
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if(dir!=VERT) return;
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tp=p->data;
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ul=p->r.min;
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size=subpt(p->r.max, p->r.min);
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pl_interior(p->state, &ul, &size);
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switch(buttons){
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default:
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SET(yoffs);
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break;
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case 1: /* left -- top moves to pointer */
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yoffs=(vlong)tp->yoffs-num*size.y/den;
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if(yoffs<0) yoffs=0;
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break;
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case 2: /* middle -- absolute index of file */
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yoffs=(vlong)tp->thgt*num/den;
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break;
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case 4: /* right -- line pointed at moves to top */
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yoffs=tp->yoffs+(vlong)num*size.y/den;
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if(yoffs>tp->thgt) yoffs=tp->thgt;
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break;
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}
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if(yoffs!=tp->yoffs){
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r=pl_outline(p->b, p->r, p->state);
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pl_rtredraw(p->b, r, tp->text, yoffs, tp->yoffs);
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p->scr.pos.y=tp->yoffs=yoffs;
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pl_setscrpos(p, tp, r);
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if(dir==VERT){
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switch(buttons){
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default:
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SET(yoffs);
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break;
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case 1: /* left -- top moves to pointer */
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yoffs=(vlong)tp->offs.y-num*size.y/den;
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if(yoffs<0) yoffs=0;
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break;
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case 2: /* middle -- absolute index of file */
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yoffs=(vlong)tp->thgt*num/den;
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break;
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case 4: /* right -- line pointed at moves to top */
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yoffs=tp->offs.y+(vlong)num*size.y/den;
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if(yoffs>tp->thgt) yoffs=tp->thgt;
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break;
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}
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if(yoffs!=tp->offs.y){
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r=pl_outline(p->b, p->r, p->state);
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pl_rtredraw(p->b, r, tp->text,
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Pt(tp->offs.x, yoffs), tp->offs, dir);
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p->scr.pos.y=tp->offs.y=yoffs;
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pl_setscrpos(p, tp, r);
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}
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}else{ /* dir==HORIZ */
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switch(buttons){
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default:
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SET(xoffs);
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break;
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case 1: /* left */
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xoffs=(vlong)tp->offs.x-num*size.x/den;
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if(xoffs<0) xoffs=0;
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break;
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case 2: /* middle */
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xoffs=(vlong)tp->maxwid*num/den;
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break;
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case 4: /* right */
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xoffs=tp->offs.x+(vlong)num*size.x/den;
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if(xoffs>tp->maxwid) xoffs=tp->maxwid;
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break;
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}
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if(xoffs!=tp->offs.x){
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r=pl_outline(p->b, p->r, p->state);
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pl_rtredraw(p->b, r, tp->text,
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Pt(xoffs, tp->offs.y), tp->offs, dir);
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p->scr.pos.x=tp->offs.x=xoffs;
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pl_setscrpos(p, tp, r);
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}
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}
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}
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void pl_typetextview(Panel *g, Rune c){
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@ -162,7 +198,7 @@ int pl_pritextview(Panel *p, Point xy){
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ul=p->r.min;
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size=subpt(p->r.max, p->r.min);
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pl_interior(p->state, &ul, &size);
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h=pl_rthit(tp->text, tp->yoffs, xy, ul);
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h=pl_rthit(tp->text, tp->offs, xy, ul);
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if(h && h->b==0 && h->p!=0){
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p=pl_ptinpanel(xy, h->p);
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if(p) return p->pri(p, xy);
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@ -189,12 +225,13 @@ void plinittextview(Panel *v, int flags, Point minsize, Rtext *t, void (*hit)(Pa
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tp->hit=hit;
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tp->minsize=minsize;
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tp->text=t;
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tp->yoffs=0;
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tp->offs=ZP;
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tp->hitfirst=0;
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tp->hitword=0;
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v->scroll=pl_scrolltextview;
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v->snarf=pl_snarftextview;
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tp->twid=-1;
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tp->maxwid=0;
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v->scr.pos=Pt(0,0);
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v->scr.size=Pt(0,1);
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}
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@ -205,9 +242,9 @@ Panel *pltextview(Panel *parent, int flags, Point minsize, Rtext *t, void (*hit)
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return v;
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}
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int plgetpostextview(Panel *p){
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return ((Textview *)p->data)->yoffs;
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return ((Textview *)p->data)->offs.y;
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}
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void plsetpostextview(Panel *p, int yoffs){
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((Textview *)p->data)->yoffs=yoffs;
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((Textview *)p->data)->offs.y=yoffs;
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pldraw(p, p->b);
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}
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@ -15,6 +15,8 @@
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int debug=0;
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int verbose=0; /* -v flag causes html errors to be written to file-descriptor 2 */
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int defdisplay=1; /* is the default (initial) display visible? */
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int visxbar=0; /* horizontal scrollbar visible? */
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int topxbar=0; /* horizontal scrollbar at top? */
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Panel *root; /* the whole display */
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Panel *alt; /* the alternate display */
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Panel *alttext; /* the alternate text window */
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@ -152,16 +154,46 @@ void scrolltext(int dy, int whence)
|
|||
s.pos.y = s.size.y+dy;
|
||||
break;
|
||||
}
|
||||
if(s.pos.y < 0)
|
||||
s.pos.y = 0;
|
||||
if(s.pos.y > s.size.y)
|
||||
s.pos.y = s.size.y;
|
||||
if(s.pos.y < 0)
|
||||
s.pos.y = 0;
|
||||
plsetscroll(text, s);
|
||||
}
|
||||
|
||||
void sidescroll(int dx, int whence)
|
||||
{
|
||||
Scroll s;
|
||||
|
||||
s = plgetscroll(text);
|
||||
switch(whence){
|
||||
case 0:
|
||||
s.pos.x = dx;
|
||||
break;
|
||||
case 1:
|
||||
s.pos.x += dx;
|
||||
break;
|
||||
case 2:
|
||||
s.pos.x = s.size.x+dx;
|
||||
break;
|
||||
}
|
||||
if(s.pos.x > s.size.x - text->size.x + 5)
|
||||
s.pos.x = s.size.x - text->size.x + 5;
|
||||
if(s.pos.x < 0)
|
||||
s.pos.x = 0;
|
||||
plsetscroll(text, s);
|
||||
}
|
||||
|
||||
void mkpanels(void){
|
||||
Panel *p, *bar, *swap;
|
||||
Panel *p, *xbar, *ybar, *swap;
|
||||
int xflags;
|
||||
|
||||
if(topxbar)
|
||||
xflags=PACKN|USERFL;
|
||||
else
|
||||
xflags=PACKS|USERFL;
|
||||
if(!visxbar)
|
||||
xflags|=IGNORE;
|
||||
menu3=plmenu(0, 0, buttons, PACKN|FILLX, hit3);
|
||||
root=plpopup(root, EXPAND, 0, 0, menu3);
|
||||
p=plgroup(root, PACKN|FILLX);
|
||||
|
|
@ -170,23 +202,24 @@ void mkpanels(void){
|
|||
pllabel(p, PACKW, "Go:");
|
||||
cmd=plentry(p, PACKN|FILLX, 0, "", docmd);
|
||||
p=plgroup(root, PACKN|FILLX);
|
||||
bar=plscrollbar(p, PACKW);
|
||||
ybar=plscrollbar(p, PACKW);
|
||||
list=pllist(p, PACKN|FILLX, genwww, 8, doprev);
|
||||
plscroll(list, 0, bar);
|
||||
plscroll(list, 0, ybar);
|
||||
p=plgroup(root, PACKN|FILLX);
|
||||
pllabel(p, PACKW, "Url:");
|
||||
cururl=pllabel(p, PACKE|EXPAND, "---");
|
||||
plplacelabel(cururl, PLACEW);
|
||||
p=plgroup(root, PACKN|EXPAND);
|
||||
bar=plscrollbar(p, PACKW|USERFL);
|
||||
ybar=plscrollbar(p, PACKW|USERFL);
|
||||
xbar=plscrollbar(p, xflags);
|
||||
text=pltextview(p, PACKE|EXPAND, Pt(0, 0), 0, dolink);
|
||||
plscroll(text, 0, bar);
|
||||
plscroll(text, xbar, ybar);
|
||||
plgrabkb(cmd);
|
||||
alt=plpopup(0, PACKE|EXPAND, 0, 0, menu3);
|
||||
bar=plscrollbar(alt, PACKW|USERFL);
|
||||
ybar=plscrollbar(alt, PACKW|USERFL);
|
||||
xbar=plscrollbar(alt, xflags);
|
||||
alttext=pltextview(alt, PACKE|EXPAND, Pt(0, 0), 0, dolink);
|
||||
plscroll(alttext, 0, bar);
|
||||
|
||||
plscroll(alttext, xbar, ybar);
|
||||
if(!defdisplay){
|
||||
swap=root;
|
||||
root=alt;
|
||||
|
|
@ -318,11 +351,11 @@ void main(int argc, char *argv[]){
|
|||
plinit(screen->depth);
|
||||
if(debug) notify(dienow);
|
||||
getfonts();
|
||||
hrule=allocimage(display, Rect(0, 0, 2048, 5), screen->chan, 0, DWhite);
|
||||
hrule=allocimage(display, Rect(0, 0, 1, 5), screen->chan, 1, DWhite);
|
||||
if(hrule==0)
|
||||
sysfatal("can't allocimage!");
|
||||
draw(hrule, Rect(0,1,1280,3), display->black, 0, ZP);
|
||||
linespace=allocimage(display, Rect(0, 0, 2048, 5), screen->chan, 0, DWhite);
|
||||
draw(hrule, Rect(0,1,1,3), display->black, 0, ZP);
|
||||
linespace=allocimage(display, Rect(0, 0, 1, 5), screen->chan, 1, DWhite);
|
||||
if(linespace==0)
|
||||
sysfatal("can't allocimage!");
|
||||
bullet=allocimage(display, Rect(0,0,25, 8), screen->chan, 0, DWhite);
|
||||
|
|
@ -390,6 +423,12 @@ void main(int argc, char *argv[]){
|
|||
case Kack:
|
||||
search();
|
||||
break;
|
||||
case Kright:
|
||||
sidescroll(text->size.x/4, 1);
|
||||
break;
|
||||
case Kleft:
|
||||
sidescroll(-text->size.x/4, 1);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case Emouse:
|
||||
|
|
|
|||
Loading…
Reference in a new issue