Several changes:

 - Fixed single touch without rubberband effect causing series select
 - Updated sqlite to 3.17.0
 - Issue #5574: more documentation for font selection of WPdfRenderer
 - more space for text in wide legend columns

src/Wt/Chart/WCartesianChart.C

@@ -2674,7 +2674,11 @@ void WCartesianChart::renderLegendItem(WPainter& painter,
 #else
   painter.setPen(fontPen);
 #endif
-  painter.drawText(pos.x() + 23, pos.y() - 9, 100, 20,
+
+  int width = (int)legendColumnWidth().toPixels();
+  if (width < 100)
+    width = 100;
+  painter.drawText(pos.x() + 23, pos.y() - 9, width, 20,
 		   AlignLeft | AlignMiddle,
 		   series.model()->headerData(series.modelColumn()));
 }

src/Wt/Dbo/backend/amalgamation/sqlite3ext.h

@@ -15,12 +15,10 @@
 ** as extensions by SQLite should #include this file instead of 
 ** sqlite3.h.
 */
-#ifndef _SQLITE3EXT_H_
-#define _SQLITE3EXT_H_
+#ifndef SQLITE3EXT_H
+#define SQLITE3EXT_H
 #include "sqlite3.h"
 
-typedef struct sqlite3_api_routines sqlite3_api_routines;
-
 /*
 ** The following structure holds pointers to all of the SQLite API
 ** routines.
@@ -267,8 +265,35 @@ struct sqlite3_api_routines {
   void (*result_text64)(sqlite3_context*,const char*,sqlite3_uint64,
                          void(*)(void*), unsigned char);
   int (*strglob)(const char*,const char*);
+  /* Version 3.8.11 and later */
+  sqlite3_value *(*value_dup)(const sqlite3_value*);
+  void (*value_free)(sqlite3_value*);
+  int (*result_zeroblob64)(sqlite3_context*,sqlite3_uint64);
+  int (*bind_zeroblob64)(sqlite3_stmt*, int, sqlite3_uint64);
+  /* Version 3.9.0 and later */
+  unsigned int (*value_subtype)(sqlite3_value*);
+  void (*result_subtype)(sqlite3_context*,unsigned int);
+  /* Version 3.10.0 and later */
+  int (*status64)(int,sqlite3_int64*,sqlite3_int64*,int);
+  int (*strlike)(const char*,const char*,unsigned int);
+  int (*db_cacheflush)(sqlite3*);
+  /* Version 3.12.0 and later */
+  int (*system_errno)(sqlite3*);
+  /* Version 3.14.0 and later */
+  int (*trace_v2)(sqlite3*,unsigned,int(*)(unsigned,void*,void*,void*),void*);
+  char *(*expanded_sql)(sqlite3_stmt*);
 };
 
+/*
+** This is the function signature used for all extension entry points.  It
+** is also defined in the file "loadext.c".
+*/
+typedef int (*sqlite3_loadext_entry)(
+  sqlite3 *db,                       /* Handle to the database. */
+  char **pzErrMsg,                   /* Used to set error string on failure. */
+  const sqlite3_api_routines *pThunk /* Extension API function pointers. */
+);
+
 /*
 ** The following macros redefine the API routines so that they are
 ** redirected through the global sqlite3_api structure.
@@ -280,7 +305,7 @@ struct sqlite3_api_routines {
 ** the API.  So the redefinition macros are only valid if the
 ** SQLITE_CORE macros is undefined.
 */
-#ifndef SQLITE_CORE
+#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
 #define sqlite3_aggregate_context      sqlite3_api->aggregate_context
 #ifndef SQLITE_OMIT_DEPRECATED
 #define sqlite3_aggregate_count        sqlite3_api->aggregate_count
@@ -407,6 +432,7 @@ struct sqlite3_api_routines {
 #define sqlite3_value_text16le         sqlite3_api->value_text16le
 #define sqlite3_value_type             sqlite3_api->value_type
 #define sqlite3_vmprintf               sqlite3_api->vmprintf
+#define sqlite3_vsnprintf              sqlite3_api->vsnprintf
 #define sqlite3_overload_function      sqlite3_api->overload_function
 #define sqlite3_prepare_v2             sqlite3_api->prepare_v2
 #define sqlite3_prepare16_v2           sqlite3_api->prepare16_v2
@@ -497,9 +523,26 @@ struct sqlite3_api_routines {
 #define sqlite3_result_blob64          sqlite3_api->result_blob64
 #define sqlite3_result_text64          sqlite3_api->result_text64
 #define sqlite3_strglob                sqlite3_api->strglob
-#endif /* SQLITE_CORE */
+/* Version 3.8.11 and later */
+#define sqlite3_value_dup              sqlite3_api->value_dup
+#define sqlite3_value_free             sqlite3_api->value_free
+#define sqlite3_result_zeroblob64      sqlite3_api->result_zeroblob64
+#define sqlite3_bind_zeroblob64        sqlite3_api->bind_zeroblob64
+/* Version 3.9.0 and later */
+#define sqlite3_value_subtype          sqlite3_api->value_subtype
+#define sqlite3_result_subtype         sqlite3_api->result_subtype
+/* Version 3.10.0 and later */
+#define sqlite3_status64               sqlite3_api->status64
+#define sqlite3_strlike                sqlite3_api->strlike
+#define sqlite3_db_cacheflush          sqlite3_api->db_cacheflush
+/* Version 3.12.0 and later */
+#define sqlite3_system_errno           sqlite3_api->system_errno
+/* Version 3.14.0 and later */
+#define sqlite3_trace_v2               sqlite3_api->trace_v2
+#define sqlite3_expanded_sql           sqlite3_api->expanded_sql
+#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
 
-#ifndef SQLITE_CORE
+#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
   /* This case when the file really is being compiled as a loadable 
   ** extension */
 # define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
@@ -514,4 +557,4 @@ struct sqlite3_api_routines {
 # define SQLITE_EXTENSION_INIT3     /*no-op*/
 #endif
 
-#endif /* _SQLITE3EXT_H_ */
+#endif /* SQLITE3EXT_H */

src/Wt/Render/WPdfRenderer

@@ -59,6 +59,11 @@ namespace Wt {
  * \endcode
  * \endif
  *
+ * Font information is embedded in the PDF. Fonts supported are native
+ * PostScript fonts (Base-14) (only ASCII-7), or true type fonts
+ * (Unicode). See addFontCollection() for more information on how
+ * fonts are located.
+ *
  * \ingroup render
  */
 class WT_API WPdfRenderer : public WTextRenderer
@@ -99,6 +104,21 @@ public:
   void setDpi(int dpi);
 
   /*! \brief Adds a font collection.
+   *
+   * If %Wt has been configured to use <tt>libpango</tt>, then font
+   * matching and character selection is done by libpango, and calls
+   * to this method are ignored. See WPdfImage::addFontCollection()
+   * for more details.
+   *
+   * If %Wt was not configured to use <tt>libpango</tt>, you will have
+   * to add the directories where %Wt should look for fonts. You will
+   * also have to specify the required font in the HTML source, e.g.:
+   *
+   * \code
+   * Render::WPdfRenderer renderer(pdf, page);
+   * // ...
+   * renderer.render("<p style=\"font-family: 'DejaVuSans', Arial\">élève, fenêtre, âme</p>");
+   * \endcode
    *
    * \sa WPdfImage::addFontCollection()
    */

src/Wt/WPdfImage

@@ -102,7 +102,10 @@ public:
    * matching and character selection is done by libpango, which is
    * seeded with information on installed fonts by fontconfig. In that
    * case, invocations for this method is ignored. Only TrueType fonts
-   * are supported, and thus you need to configure fontconfig (which
+   * are supported.
+   *
+   * As of %Wt 3.3.7, only TrueType fonts will be selected by default.
+   * Prior to %Wt 3.3.7, you needed to configure fontconfig (which
    * is used by pango) to only return TrueType fonts. This can be
    * done using a fonts.conf configuration %file:
    *
@@ -128,7 +131,7 @@ public:
    * fonts. The main drawback compared to libpango is that font
    * selection is not steered by the need for particular characters,
    * i.e. font selection is independent from the text's need for
-   * specific characters. Most TrueType fonts provided only partial
+   * specific characters. Most TrueType fonts provide only partial
    * unicode support. The provided \p directory will be searched for
    * fonts (currently only TrueType ".ttf" or ".ttc" fonts). TrueType
    * fonts are preferable over Base-14 fonts (which are PDF's default

src/js/WCartesianChart.js

@@ -1028,15 +1028,13 @@ WT_DECLARE_WT_MEMBER
 	    animating = true;
 	    rqAnimFrame(animate);
 	 } else {
-	    self.mouseUp(null, null);
+	    if (mode === CROSSHAIR_MODE)
+	      self.mouseUp(null, null);
 	    touches = [];
 	    zoomAngle = null;
 	    zoomMiddle = null;
 	    zoomProjection = null;
-	    if (lastDate != null) {
-	       var now = Date.now();
-	       lastDate = null;
-	    }
+	    lastDate = null;
 	 }
 	 mode = null;
       } else if (singleTouch || doubleTouch)