X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=pdf-tools.cc;h=809238c3b662e6138f55eecd2f968584c61e89c5;hb=a4b921dcbcc63c6ac28949d16be531f2f4465eab;hp=9d89ad8153e7d02f3a160346cfea38b5d3718863;hpb=0067f5b7bd14a37261df30bfcd5ca71ed2c1a38a;p=paperjam.git

diff --git a/pdf-tools.cc b/pdf-tools.cc
index 9d89ad8..809238c 100644
--- a/pdf-tools.cc
+++ b/pdf-tools.cc
@@ -4,69 +4,16 @@
  *	(c) 2018 Martin Mares <mj@ucw.cz>
  */
 
-#include <cstdarg>
 #include <cstdio>
 #include <cstdlib>
 
 #include <iconv.h>
 
-using namespace std;
-
-#include "pdf-tools.h"
+#include "jam.h"
 
 #include <qpdf/QUtil.hh>
 #include <qpdf/Pl_Concatenate.hh>
 
-/*** Messages ***/
-
-int debug_mode;
-int debug_indent;
-
-void debug(const char *msg, ...)
-{
-	if (!debug_mode)
-		return;
-	va_list args;
-	va_start(args, msg);
-	fprintf(stderr, "%*s", debug_indent, "");
-	vfprintf(stderr, msg, args);
-	fputc('\n', stderr);
-	va_end(args);
-}
-
-void warn(const char *msg, ...)
-{
-	va_list args;
-	va_start(args, msg);
-	fprintf(stderr, "WARNING: ");
-	vfprintf(stderr, msg, args);
-	fputc('\n', stderr);
-	va_end(args);
-}
-
-void die(const char *msg, ...)
-{
-	va_list args;
-	va_start(args, msg);
-	fprintf(stderr, "ERROR: ");
-	vfprintf(stderr, msg, args);
-	fputc('\n', stderr);
-	va_end(args);
-	exit(1);
-}
-
-void bad(const char *msg, ...)
-{
-	va_list args;
-	va_start(args, msg);
-	char buf[1024];
-	vsnprintf(buf, sizeof(buf), msg, args);
-	va_end(args);
-
-	printf("error: %s\n", buf);
-	die("BAD: %s", buf);
-}
-
 /*** Transformation matrices ***/
 
 // Construct string representation of a transformation matrix
@@ -75,9 +22,7 @@ string pdf_matrix::to_string() {
 	for (int i=0; i<6; i++) {
 		if (i)
 			s += " ";
-		char buf[16];
-		snprintf(buf, sizeof(buf), "%.3f", m[i]);
-		s += buf;
+		s += pdf_coord(m[i], 6);
 	}
 	return s;
 }
@@ -94,6 +39,15 @@ QPDFObjectHandle BBox::to_array()
 	return a;
 }
 
+string BBox::to_rect()
+{
+	return
+		pdf_coord(x_min) + " " +
+		pdf_coord(y_min) + " " +
+		pdf_coord(width()) + " " +
+		pdf_coord(height());
+}
+
 bool BBox::parse(QPDFObjectHandle h)
 {
 	if (!h.isArray() || h.getArrayNItems() != 4)
@@ -112,6 +66,54 @@ bool BBox::parse(QPDFObjectHandle h)
 	return true;
 }
 
+BBox::BBox(QPDFObjectHandle box) {
+	if (!parse(box)) {
+		warn("Invalid bounding box, falling back to A4");
+		x_min = 0, x_max = A4_WIDTH;
+		y_min = 0, y_max = A4_HEIGHT;
+	}
+}
+
+void BBox::transform(pdf_matrix &m)
+{
+	m.apply(&x_min, &y_min);
+	m.apply(&x_max, &y_max);
+	if (x_max < x_min)
+		swap(x_min, x_max);
+	if (y_max < y_min)
+		swap(y_min, y_max);
+}
+
+BBox BBox::transformed(pdf_matrix &m)
+{
+	BBox b = *this;
+	b.transform(m);
+	return b;
+}
+
+void BBox::join(BBox &with)
+{
+	x_min = min(x_min, with.x_min);
+	x_max = max(x_max, with.x_max);
+	y_min = min(y_min, with.y_min);
+	y_max = max(y_max, with.y_max);
+}
+
+void BBox::enlarge(double by)
+{
+	x_min -= by;
+	x_max += by;
+	y_min -= by;
+	y_max += by;
+}
+
+BBox BBox::enlarged(double by)
+{
+	BBox b = *this;
+	b.enlarge(by);
+	return b;
+}
+
 /*** Unicode strings ***/
 
 // Construct PDF representation of a UTF-8 string
@@ -213,3 +215,17 @@ QPDFObjectHandle page_to_xobject(QPDF *out, QPDFObjectHandle page)
 	xo_stream.replaceStreamData(ph, QPDFObjectHandle::newNull(), QPDFObjectHandle::newNull());
 	return xo_stream;
 }
+
+/*** Formatting of coordinates ***/
+
+string pdf_coord(double x, uint digits)
+{
+	char buf[16];
+	snprintf(buf, sizeof(buf), "%.*f", digits, x);
+	int n = strlen(buf);
+	while (n > 0 && buf[n-1] == '0')
+		buf[--n] = 0;
+	if (n > 0 && buf[n-1] == '.')
+		buf[--n] = 0;
+	return buf;
+}