Merge branch 'master' into revise-composite

ChangeLog

@@ -11,6 +11,11 @@
 - added vips_image_set_blob_copy() [jcupitt]
 - don't stop composite on first non-transparent image [felixbuenemann]
 
+21/11/18 started 8.7.2
+- more info output for temp files to help diagnose problems
+- vips_text() could set the wrong DPI
+- vips_text() leaked in autofit mode
+
 23/9/18 started 8.7.1
 - update function list in docs [janko-m] 
 - test for g_str_to_ascii() [jcupitt]

libvips/create/text.c

@@ -22,6 +22,9 @@
  * 	- better fitting of fonts with overhanging edges, thanks Adrià 
  * 26/4/18 fangqiao 
  * 	- add fontfile option
+ * 5/12/18 
+ * 	- fitting mode could set wrong dpi
+ * 	- fitting mode leaked
  */
 
 /*
@@ -170,8 +173,6 @@ vips_text_get_extents( VipsText *text, VipsRect *extents )
 
 	pango_ft2_font_map_set_resolution( 
 		PANGO_FT2_FONT_MAP( vips_text_fontmap ), text->dpi, text->dpi );
-	text->context = pango_font_map_create_context( 
-		PANGO_FONT_MAP( vips_text_fontmap ) );
 
 	if( !(text->layout = text_layout_new( text->context, 
 		text->text, text->font, 
@@ -180,17 +181,18 @@ vips_text_get_extents( VipsText *text, VipsRect *extents )
 
 	pango_layout_get_pixel_extents( text->layout, 
 		&ink_rect, &logical_rect );
-
 	extents->left = ink_rect.x;
 	extents->top = ink_rect.y;
 	extents->width = ink_rect.width;
 	extents->height = ink_rect.height;
 
 #ifdef DEBUG
-	printf( "vips_text_get_extents: dpi = %d, "
-		"left = %d, top = %d, width = %d, height = %d\n",
-		text->dpi, 
-		extents->left, extents->top, extents->width, extents->height );
+	printf( "vips_text_get_extents: dpi = %d\n", text->dpi ); 
+	printf( "    ink left = %d, top = %d, width = %d, height = %d\n",
+		ink_rect.x, ink_rect.y, ink_rect.width, ink_rect.height );
+	printf( "    logical left = %d, top = %d, width = %d, height = %d\n",
+		logical_rect.x, logical_rect.y, 
+		logical_rect.width, logical_rect.height );
 #endif /*DEBUG*/
 
 	return( 0 );
@@ -215,27 +217,32 @@ vips_text_rect_difference( VipsRect *target, VipsRect *extents )
 /* Adjust text->dpi to try to fit to the bounding box.
  */
 static int
-vips_text_autofit( VipsText *text, VipsRect *out_extents ) 
+vips_text_autofit( VipsText *text )
 {
 	VipsRect target;
 	VipsRect extents;
-	VipsRect previous_extents;
 	int difference;
 	int previous_difference;
 	int previous_dpi;
 
 	int lower_dpi;
 	int upper_dpi;
-	VipsRect lower_extents;
-	VipsRect upper_extents;
 
 	/* First, repeatedly double or halve dpi until we pass the correct
 	 * value. This will give us a lower and upper bound.
 	 */
+	target.left = 0;
+	target.top = 0;
 	target.width = text->width;
 	target.height = text->height;
 	previous_dpi = -1;
 
+#ifdef DEBUG
+	printf( "vips_text_autofit: "
+		"target left = %d, top = %d, width = %d, height = %d\n",
+		target.left, target.top, target.width, target.height );
+#endif /*DEBUG*/
+
 	for(;;) { 
 		if( vips_text_get_extents( text, &extents ) )
 			return( -1 ); 
@@ -246,7 +253,6 @@ vips_text_autofit( VipsText *text, VipsRect *out_extents )
 		if( previous_dpi == -1 ) {
 			previous_dpi = text->dpi;
 			previous_difference = difference;
-			previous_extents = extents;
 		}
 
 		/* Hit the size, or we straddle the target.
@@ -256,7 +262,6 @@ vips_text_autofit( VipsText *text, VipsRect *out_extents )
 			break;
 
 		previous_difference = difference;
-		previous_extents = extents;
 		previous_dpi = text->dpi;
 
 		text->dpi = difference < 0 ? text->dpi * 2 : text->dpi / 2;
@@ -266,17 +271,18 @@ vips_text_autofit( VipsText *text, VipsRect *out_extents )
 		/* We've been coming down.
 		 */
 		lower_dpi = text->dpi;
-		lower_extents = extents;
 		upper_dpi = previous_dpi;
-		upper_extents = previous_extents;
 	}
 	else {
 		lower_dpi = previous_dpi;
-		lower_extents = previous_extents;
 		upper_dpi = text->dpi;
-		upper_extents = extents;
 	}
 
+#ifdef DEBUG
+	printf( "vips_text_autofit: lower dpi = %d, upper dpi = %d\n",
+		lower_dpi, upper_dpi );
+#endif /*DEBUG*/
+
 	/* Refine lower and upper until they are almost touching.
 	 */
 	while( upper_dpi - lower_dpi > 1 &&
@@ -288,31 +294,26 @@ vips_text_autofit( VipsText *text, VipsRect *out_extents )
 		target.top = extents.top;
 		difference = vips_text_rect_difference( &target, &extents );
 
-		if( difference < 0 ) { 
+		if( difference < 0 ) 
 			lower_dpi = text->dpi;
-			lower_extents = extents;
-		}
-		else {
+		else
 			upper_dpi = text->dpi;
-			upper_extents = extents;
-		}
 	}
 
 	/* If we've hit the target exactly and quit the loop, diff will be 0
 	 * and we can use upper. Otherwise we are straddling the target and we
 	 * must take lower.
 	 */
-	if( difference == 0 ) {
+	if( difference == 0 ) 
 		text->dpi = upper_dpi;
-		*out_extents = upper_extents;
-	}
-	else {
+	else 
 		text->dpi = lower_dpi;
-		*out_extents = lower_extents;
-	}
-
 	g_object_set( text, "autofit_dpi", text->dpi, NULL ); 
 
+#ifdef DEBUG
+	printf( "vips_text_autofit: final dpi = %d\n", text->dpi );
+#endif /*DEBUG*/
+
 	return( 0 ); 
 }
 
@@ -340,6 +341,9 @@ vips_text_build( VipsObject *object )
 	if( !vips_text_fontmap )
 		vips_text_fontmap = pango_ft2_font_map_new();
 
+	text->context = pango_font_map_create_context( 
+		PANGO_FONT_MAP( vips_text_fontmap ) );
+
 	if( text->fontfile &&
 		!FcConfigAppFontAddFile( NULL, 
 			(const FcChar8 *) text->fontfile ) ) {
@@ -354,15 +358,14 @@ vips_text_build( VipsObject *object )
 	 */
 	if( vips_object_argument_isset( object, "height" ) &&
 		!vips_object_argument_isset( object, "dpi" ) ) {
-		if( vips_text_autofit( text, &extents ) )
+		if( vips_text_autofit( text ) )
 			return( -1 );
 	}
-	else
-		if( vips_text_get_extents( text, &extents ) )
-			return( -1 );
 
-	/* Can happen for "", for example.
+	/* Layout. Can fail for "", for example.
 	 */
+	if( vips_text_get_extents( text, &extents ) )
+		return( -1 );
 	if( extents.width == 0 || 
 		extents.height == 0 ) {
 		vips_error( class->nickname, "%s", _( "no text to render" ) );

libvips/foreign/webpsave.c

@@ -444,6 +444,9 @@ vips_foreign_save_webp_mime_init( VipsForeignSaveWebpMime *mime )
  * frames between frames. Setting 0 means no keyframes. By default, keyframes
  * are disabled.
  *
+ * Use the metadata items `gif-loop` and `gif-delay` to set the number of
+ * loops for the animation and the frame delay.
+ *
  * The writer will attach ICC, EXIF and XMP metadata, unless @strip is set to
  * %TRUE.
  *

libvips/iofuncs/vips.c

@@ -188,6 +188,11 @@ vips__open_image_write( const char *filename, gboolean temp )
 
 	fd = -1;
 
+#ifndef O_TMPFILE
+	if( temp ) 
+		g_info( "vips__open_image_write: O_TMPFILE not available" );
+#endif /*!O_TMPFILE*/
+
 #ifdef O_TMPFILE
 	/* Linux-only extension creates an unlinked file. CREAT and TRUNC must
 	 * be clear. The filename arg to open() must name a directory.
@@ -199,9 +204,13 @@ vips__open_image_write( const char *filename, gboolean temp )
 	if( temp ) {
 		char *dirname;
 
+		g_info( "vips__open_image_write: opening with O_TMPFILE" );
 		dirname = g_path_get_dirname( filename ); 
 		fd = vips_tracked_open( dirname, O_TMPFILE | O_RDWR , 0666 );
 		g_free( dirname ); 
+
+		if( fd < 0 ) 
+			g_info( "vips__open_image_write: O_TMPFILE failed!" );
 	}
 #endif /*O_TMPFILE*/
 
@@ -211,14 +220,19 @@ vips__open_image_write( const char *filename, gboolean temp )
 	/* On Windows, setting _O_TEMPORARY will delete the file automatically
 	 * on process exit, even if the processes crashes. 
 	 */
-	if( temp )
+	if( temp ) {
+		g_info( "vips__open_image_write: setting _O_TEMPORARY" );
 		flags |= _O_TEMPORARY;
+	}
 #endif /*_O_TEMPORARY*/
 
-	if( fd < 0 )
+	if( fd < 0 ) {
+		g_info( "vips__open_image_write: simple open" );
 		fd = vips_tracked_open( filename, flags, 0666 );
+	}
 
 	if( fd < 0 ) {
+		g_info( "vips__open_image_write: failed!" );
 		vips_error_system( errno, "VipsImage", 
 			_( "unable to write to \"%s\"" ), filename );
 		return( -1 );

libvips/resample/resize.c

@@ -28,6 +28,9 @@
  * 	- make LINEAR and CUBIC adaptive
  * 25/11/17
  * 	- deprecate --centre ... it's now always on, thanks tback
+ * 3/12/18 [edwjusti]
+ * 	- disable the centre sampling offset for nearest upscale, since the
+ * 	  affine nearest interpolator is always centre 
  */
 
 /*
@@ -241,9 +244,12 @@ vips_resize_build( VipsObject *object )
 			vips_resize_interpolate( resize->kernel );
 
 		/* Input displacement. For centre sampling, shift by 0.5 down
-		 * and right.
+		 * and right. Except if this is nearest, which is always
+		 * centre.
 		 */
-		const double id = 0.5;
+		const double id = 
+			resize->kernel == VIPS_KERNEL_NEAREST ? 
+			0.0 : 0.5;
 
 		VipsInterpolate *interpolate;
 

m4/pdfium.m4

@@ -20,21 +20,16 @@ ZLIB_LIBS=""
 # order.
 pdfium_objects="\
 	libpdfium.a \
-	libfpdfapi.a \
-	libfxge.a \
-	libfpdfdoc.a \
-	libfxcrt.a \
-	libfx_agg.a \
-	libfxcodec.a \
-	libfx_lpng.a \
-	libfx_libopenjpeg.a \
-	libfx_lcms2.a \
-	libfx_freetype.a \
+	libchrome_zlib.a \
+	libgmock_main.a \
+	libicui18n.a \
+	libicuuc.a \
 	libjpeg.a \
-	libfdrm.a \
-	libpwl.a \
-	libbigint.a \
-	libformfiller.a"
+	libminizip.a \
+	libzlib_x86_simd.a \
+	libsimd.a \
+	libsimd_asm.a \
+	libyasm_utils.a"
 
 AC_ARG_WITH(pdfium, 
   AS_HELP_STRING([--without-pdfium], [build without pdfium (default: test)]))
@@ -74,6 +69,7 @@ if test "$PDFIUM_INCLUDES" = ""; then
 fi
 
 # Now for the libraries ... if there's nothing set, try $PREFIX/lib 
+# we must link with g++ for pdfium
 if test "$PDFIUM_LIBS" = ""; then
   pdfium_save_LIBS="$LIBS"
   pdfium_save_CPPFLAGS="$CPPFLAGS"
@@ -83,15 +79,14 @@ if test "$PDFIUM_LIBS" = ""; then
     LIBS="$LIBS $prefix/lib/pdfium-obj/$i"
   done
   LIBS="$LIBS -L$prefix/lib -lm -lpthread"
-  CPPFLAGS="$PDFIUM_INCLUDES $CPPFLAGS"
+  CPPFLAGS="$PDFIUM_INCLUDES $CPPFLAGS -std=c++11"
 
-  AC_TRY_LINK([#include <fpdfview.h>],
-    [FPDF_DOCUMENT doc; doc = FPDF_LoadDocument("", "")], [
-     PDFIUM_LIBS="${prefix}/lib"
-    ], [
-     PDFIUM_LIBS=no
-    ]
-  )
+  AC_LANG(C++)
+  AC_LINK_IFELSE(
+    [AC_LANG_PROGRAM([#include <fpdfview.h>],
+      [FPDF_DOCUMENT doc; doc = FPDF_LoadDocument("", "")])],
+    [PDFIUM_LIBS="${prefix}/lib"],
+    [PDFIUM_LIBS=no])
 
   LIBS="$pdfium_save_LIBS"
   CPPFLAGS="$pdfium_save_CPPFLAGS"