R=rsc

CC=codebot
http://codereview.appspot.com/193069

CONTRIBUTORS

@@ -12,6 +12,7 @@ J.R. Mauro <jrm8005@gmail.com>
 Jeff Sickel <jas@corpus-callosum.com>
 Kris Maglione <jg@suckless.org>
 Mathieu Lonjaret <lejatorn@gmail.com>
+Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
 Michael Teichgräber <mt4swm@googlemail.com>
 Michael Teichgräber <mt@ib.wmipf.de>
 Russ Cox <rsc@swtch.com>

src/cmd/page/cache.c

@@ -17,6 +17,7 @@ struct Cached
 	int page;
 	int angle;
 	Image *im;
+	int ppi;
 };
 
 static Cached cache[5];
@@ -57,14 +58,28 @@ _cachedpage(Document *doc, int angle, int page, char *ra)
 	int i;
 	Cached *c, old;
 	Image *im, *tmp;
+	int ppi = 100;
+	PDFInfo *pdf;
+	PSInfo *ps;
 
 	if((page < 0 || page >= doc->npage) && !doc->fwdonly)
 		return nil;
 
+	if (doc->type == Tpdf){
+		pdf = (PDFInfo *) doc->extra;
+		ppi = pdf->gs.ppi;
+	}
+	else{
+		if (doc->type == Tps){
+			ps = (PSInfo *) doc->extra;
+			ppi = ps->gs.ppi;
+		}
+	}
+
 Again:
 	for(i=0; i<nelem(cache); i++){
 		c = &cache[i];
-		if(c->doc == doc && c->angle == angle && c->page == page){
+		if(c->doc == doc && c->angle == angle && c->page == page && c->ppi == ppi){
 			if(chatty) fprint(2, "cache%s hit %d\n", ra, page);
 			goto Found;
 		}
@@ -80,6 +95,7 @@ Again:
 	c->im = nil;
 	c->doc = nil;
 	c->page = -1;
+	c->ppi = -1;
 
 	if(chatty) fprint(2, "cache%s load %d\n", ra, page);
 	im = doc->drawpage(doc, page);
@@ -129,6 +145,7 @@ Again:
 	c->page = page;
 	c->angle = angle;
 	c->im = im;
+	c->ppi = ppi;
 
 Found:
 	if(chatty) fprint(2, "cache%s mtf %d @%d:", ra, c->page, i);

src/cmd/page/gfx.c

@@ -85,6 +85,7 @@ initgfx(Biobuf *b, int argc, char **argv, uchar *buf, int nbuf)
 	doc->rmpage = rmpage;
 	doc->extra = gfx;
 	doc->fwdonly = 0;
+	doc->type = Tgfx;
 
 	fprint(2, "reading through graphics...\n");
 	if(argc==0 && buf)

src/cmd/page/page.c

@@ -21,6 +21,7 @@ int truecolor;
 int imagemode;
 int notewatcher;
 int notegp;
+int fitwin;
 char tempfile[40];
 
 int
@@ -80,7 +81,7 @@ afmt(Fmt *fmt)
 void
 usage(void)
 {
-	fprint(2, "usage: page [-biRrw] [-p ppi] file...\n");
+	fprint(2, "usage: page [-biRrwf] [-p ppi] file...\n"); 
 	wexits("usage");
 }
 
@@ -142,6 +143,9 @@ threadmain(int argc, char **argv)
 	case 'W':
 		winsize = EARGF(usage());
 		break;
+	case 'f':
+		fitwin = 1;
+		break; 
 	default:
 		usage();
 	}ARGEND;

src/cmd/page/page.h

@@ -12,6 +12,7 @@ struct Document {
 	int	(*rmpage)(Document*, int);
 	Biobuf *b;
 	void *extra;
+	int type;
 };
 
 typedef struct Graphic	Graphic;
@@ -37,6 +38,12 @@ enum {
 	Ibmp,
 };
 
+enum {
+	Tgfx,
+	Tpdf,
+	Tps,
+}
+;
 
 void *emalloc(int);
 void *erealloc(void*, int);
@@ -65,6 +72,7 @@ extern int truetoboundingbox;
 extern int wctlfd;
 extern int resizing;
 extern int mknewwindow;
+extern int fitwin;
 
 void rot180(Image*);
 Image *rot90(Image*);
@@ -73,6 +81,9 @@ Image *resample(Image*, Image*);
 
 /* ghostscript interface shared by ps, pdf */
 typedef struct GSInfo	GSInfo;
+typedef struct PDFInfo	PDFInfo;
+typedef struct Page	Page;
+typedef struct PSInfo	PSInfo;
 struct GSInfo {
 	Graphic g;
 	int gsfd;
@@ -80,6 +91,24 @@ struct GSInfo {
 	int gspid;
 	int ppi;
 };
+struct PDFInfo {
+	GSInfo gs;
+	Rectangle *pagebbox;
+};
+struct Page {
+	char *name;
+	int offset;			/* offset of page beginning within file */
+};
+struct PSInfo {
+	GSInfo gs;
+	Rectangle bbox;	/* default bounding box */
+	Page *page;
+	int npage;
+	int clueless;	/* don't know where page boundaries are */
+	long psoff;	/* location of %! in file */
+	char ctm[256];
+};
+
 void	waitgs(GSInfo*);
 int	gscmd(GSInfo*, char*, ...);
 int	spawngs(GSInfo*, char*);
@@ -98,6 +127,7 @@ int	bell(void*, char*);
 Image*	convert(Graphic *g);
 Image*	cachedpage(Document*, int, int);
 void	cacheflush(void);
+void   fit(void);
 
 extern char tempfile[40];
 

src/cmd/page/pdf.c

@@ -12,12 +12,6 @@
 #include <bio.h>
 #include "page.h"
 
-typedef struct PDFInfo	PDFInfo;
-struct PDFInfo {
-	GSInfo gs;
-	Rectangle *pagebbox;
-};
-
 static Image*	pdfdrawpage(Document *d, int page);
 static char*	pdfpagename(Document*, int);
 
@@ -97,6 +91,7 @@ initpdf(Biobuf *b, int argc, char **argv, uchar *buf, int nbuf)
 	d->drawpage = pdfdrawpage;
 	d->pagename = pdfpagename;
 	d->fwdonly = 0;
+	d->type = Tpdf;
 
 	if(spawngs(&pdf->gs, "-dDELAYSAFER") < 0)
 		return nil;

src/cmd/page/ps.c

@@ -13,24 +13,6 @@
 #include <ctype.h>
 #include "page.h"
 
-typedef struct PSInfo	PSInfo;
-typedef struct Page	Page;
-	
-struct Page {
-	char *name;
-	int offset;			/* offset of page beginning within file */
-};
-
-struct PSInfo {
-	GSInfo gs;
-	Rectangle bbox;	/* default bounding box */
-	Page *page;
-	int npage;
-	int clueless;	/* don't know where page boundaries are */
-	long psoff;	/* location of %! in file */
-	char ctm[256];
-};
-
 static int	pswritepage(Document *d, int fd, int page);
 static Image*	psdrawpage(Document *d, int page);
 static char*	pspagename(Document*, int);
@@ -348,6 +330,11 @@ Keepreading:
 
 	d->fwdonly = ps->clueless = dumb;
 	d->docname = argv[0];
+	/*
+	 * "tag" the doc as an image for now since there still is the "blank page"
+	 * problem for ps files.
+	 */
+	d->type = Tgfx;
 
 	if(spawngs(&ps->gs, "-dSAFER") < 0)
 		return nil;

src/cmd/page/view.c

@@ -145,9 +145,13 @@ showpage(int page, Menu *m)
 		showbottom = 0;
 	}
 
+	if((doc->type == Tgfx) && fitwin)
+		fit();
+	else{
 		redraw(screen);
 	 	flushimage(display, 1);
 	}
+}
 
 char*
 writebitmap(void)
@@ -252,6 +256,8 @@ viewer(Document *dd)
 	Rectangle r;
 	int size[2];
 	Image *tmp;
+	PDFInfo *pdf;
+	PSInfo *ps;
 	static char *fwditems[] = { "this page", "next page", "exit", 0 };
  	static char *miditems[] = {
  		"orig size",
@@ -542,7 +548,25 @@ viewer(Document *dd)
 					zerox();
 					break;
 				case Zin:	/* zoom in */
-					{
+					if (dd->type == Tpdf){		/* pdf */
+						pdf = (PDFInfo *) dd->extra;
+						if (pdf != nil){
+							ppi+= 50;
+							setdim(&pdf->gs, Rect(0,0,0,0), ppi, 0);
+							showpage(page, &menu);
+						}
+						break;
+					}
+					if (dd->type == Tps){		/* ps */
+						ps = (PSInfo *) dd->extra;
+						if (ps != nil){
+							ppi+= 50;
+							setdim(&ps->gs, Rect(0,0,0,0), ppi, 0);
+							showpage(page, &menu);
+						}
+						break;
+					}				
+					else{ 	/* image */
 						double delta;
 						Rectangle r;
 
@@ -574,30 +598,12 @@ viewer(Document *dd)
 						break;
 					}
 				case Fit:	/* fit */
-					{
+					/* no op if pdf or ps*/
-						double delta;
+					if (dd->type == Tgfx){
-						Rectangle r;
+						fitwin = 1;
-						
+						fit();
-						delta = (double)Dx(screen->r)/(double)Dx(im->r);
-						if((double)Dy(im->r)*delta > Dy(screen->r))
-							delta = (double)Dy(screen->r)/(double)Dy(im->r);
-
-						r = Rect(0, 0, (int)((double)Dx(im->r)*delta), (int)((double)Dy(im->r)*delta));
-						setcursor(mc, &reading);
-						tmp = xallocimage(display, r, im->chan, 0, DBlack);
-						if(tmp == nil) {
-							fprint(2, "out of memory during fit: %r\n");
-							wexits("memory");
 					}
-						resample(im, tmp);
-						im = tmp;
-						delayfreeimage(tmp);
-						setcursor(mc, nil);
-						ul = screen->r.min;
-						redraw(screen);
-						flushimage(display, 1);
 					break;
-					}
 				case Rot:	/* rotate 90 */
 					angle = (angle+90) % 360;
 					showpage(page, &menu);
@@ -607,6 +613,25 @@ viewer(Document *dd)
 					showpage(page, &menu);
 					break;
 				case Restore:	/* restore */
+					if (dd->type == Tpdf){		/* pdf */
+						pdf = (PDFInfo *) dd->extra;
+						if (pdf != nil){
+							ppi = 100;
+							setdim(&pdf->gs, Rect(0,0,0,0), ppi, 0);
+						}
+						showpage(page, &menu);
+						break;
+					}
+					if (dd->type == Tps){		/* ps */
+						ps = (PSInfo *) dd->extra;
+						if (ps != nil){
+							ppi = 100;
+							setdim(&ps->gs, Rect(0,0,0,0), ppi, 0);
+						}
+						showpage(page, &menu);
+						break;
+					}
+					fitwin = 0;
 					showpage(page, &menu);
 					break;
 				case Reverse:	/* reverse */
@@ -1019,3 +1044,29 @@ zerox(void)
 	writeimage(pfd[1], im, 0);
 	close(pfd[1]);
 }
+
+void
+fit()
+{
+	double delta;
+	Rectangle r;
+	Image* tmp;
+
+	delta = (double)Dx(screen->r)/(double)Dx(im->r);
+	if((double)Dy(im->r)*delta > Dy(screen->r))
+		delta = (double)Dy(screen->r)/(double)Dy(im->r);
+	r = Rect(0, 0, (int)((double)Dx(im->r)*delta), (int)((double)Dy(im->r)*delta));
+	setcursor(mc, &reading);
+	tmp = xallocimage(display, r, im->chan, 0, DBlack);
+	if(tmp == nil) {
+		fprint(2, "out of memory during fit: %r\n");
+		wexits("memory");
+	}
+	resample(im, tmp);
+	im = tmp;
+	delayfreeimage(tmp);
+	setcursor(mc, nil);
+	ul = screen->r.min;
+	redraw(screen);
+	flushimage(display, 1);
+}