work on hyperlinks, x14 extentions, other round tripping silliness

include/xlnt/cell/cell.hpp

@@ -47,6 +47,8 @@ class font;
 class format;
 class number_format;
 class protection;
+class range;
+class relationship;
 class style;
 class workbook;
 class worksheet;
@@ -251,9 +253,9 @@ public:
     // hyperlink
 
     /// <summary>
-    /// Returns the URL of this cell's hyperlink.
+    /// Returns the relationship of this cell's hyperlink.
     /// </summary>
-    std::string hyperlink() const;
+    class hyperlink hyperlink() const;
 
     /// <summary>
     /// Adds a hyperlink to this cell pointing to the URL of the given value.
@@ -271,6 +273,11 @@ public:
     /// </summary>
     void hyperlink(xlnt::cell target);
 
+    /// <summary>
+    /// Adds an internal hyperlink to this cell pointing to the given range.
+    /// </summary>
+    void hyperlink(xlnt::range target);
+
     /// <summary>
     /// Returns true if this cell has a hyperlink set.
     /// </summary>

include/xlnt/cell/hyperlink.hpp

@@ -0,0 +1,61 @@
+// Copyright (c) 2018 Thomas Fussell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#pragma once
+
+#include <string>
+#include <xlnt/xlnt_config.hpp>
+
+namespace xlnt {
+
+namespace detail {
+struct hyperlink_impl;
+}
+
+class cell;
+class range;
+class relationship;
+
+/// <summary>
+/// Describes a hyperlink pointing from a cell to another cell or a URL.
+/// </summary>
+class XLNT_API hyperlink
+{
+public:
+    bool external() const;
+    class relationship relationship() const;
+    std::string url() const;
+    std::string target_range() const;
+    void display(const std::string &value);
+    std::string display() const;
+    void tooltip(const std::string &value);
+    std::string tooltip() const;
+
+private:
+    friend class cell;
+    hyperlink(detail::hyperlink_impl *d);
+    detail::hyperlink_impl *d_;
+};
+
+} // namespace xlnt
+

include/xlnt/workbook/workbook.hpp

@@ -682,6 +682,31 @@ public:
     /// </summary>
     void clear_styles();
 
+    /// <summary>
+    /// Sets the default slicer style to the given value.
+    /// </summary>
+    void default_slicer_style(const std::string &value);
+
+    /// <summary>
+    /// Returns the default slicer style.
+    /// </summary>
+    std::string default_slicer_style() const;
+
+    /// <summary>
+    /// Enables knownFonts in stylesheet.
+    /// </summary>
+    void enable_known_fonts();
+
+    /// <summary>
+    /// Disables knownFonts in stylesheet.
+    /// </summary>
+    void disable_known_fonts();
+
+    /// <summary>
+    /// Returns true if knownFonts are enabled in the stylesheet.
+    /// </summary>
+    bool known_fonts_enabled() const;
+
     // Manifest
 
     /// <summary>

include/xlnt/worksheet/row_properties.hpp

@@ -35,10 +35,15 @@ class XLNT_API row_properties
 {
 public:
     /// <summary>
-    /// Optional height
+    /// Row height
     /// </summary>
     optional<double> height;
 
+    /// <summary>
+    /// Distance in pixels from the bottom of the cell to the baseline of the cell content
+    /// </summary>
+    optional<double> dy_descent;
+
     /// <summary>
     /// Whether or not the height is different from the default
     /// </summary>

include/xlnt/xlnt.hpp

@@ -30,6 +30,7 @@
 #include <xlnt/cell/cell_reference.hpp>
 #include <xlnt/cell/cell_type.hpp>
 #include <xlnt/cell/comment.hpp>
+#include <xlnt/cell/hyperlink.hpp>
 #include <xlnt/cell/rich_text.hpp>
 #include <xlnt/cell/index_types.hpp>
 #include <xlnt/cell/rich_text_run.hpp>

source/cell/cell.cpp

@@ -28,11 +28,13 @@
 
 #include <detail/implementations/cell_impl.hpp>
 #include <detail/implementations/format_impl.hpp>
+#include <detail/implementations/hyperlink_impl.hpp>
 #include <detail/implementations/stylesheet.hpp>
 #include <detail/implementations/worksheet_impl.hpp>
 #include <xlnt/cell/cell.hpp>
 #include <xlnt/cell/cell_reference.hpp>
 #include <xlnt/cell/comment.hpp>
+#include <xlnt/cell/hyperlink.hpp>
 #include <xlnt/cell/rich_text.hpp>
 #include <xlnt/packaging/manifest.hpp>
 #include <xlnt/packaging/relationship.hpp>
@@ -196,7 +198,7 @@ cell::cell(detail::cell_impl *d)
 
 bool cell::garbage_collectible() const
 {
-    return !(has_value() || is_merged() || has_formula() || has_format());
+    return !(has_value() || is_merged() || has_formula() || has_format() || has_hyperlink());
 }
 
 void cell::value(std::nullptr_t)
@@ -360,9 +362,9 @@ cell &cell::operator=(const cell &rhs)
     return *this;
 }
 
-std::string cell::hyperlink() const
+hyperlink cell::hyperlink() const
 {
-    return d_->hyperlink_.get();
+    return xlnt::hyperlink(&d_->hyperlink_.get());
 }
 
 void cell::hyperlink(const std::string &hyperlink)
@@ -377,31 +379,50 @@ void cell::hyperlink(const std::string &hyperlink)
     auto &manifest = ws.workbook().manifest();
     bool existing = false;
 
+    d_->hyperlink_ = detail::hyperlink_impl();
+
+    // check for existing relationships
     for (const auto &rel : manifest.relationships(ws.path(), relationship_type::hyperlink))
     {
         if (rel.target().path().string() == hyperlink)
         {
+            d_->hyperlink_.get().relationship = rel;
             existing = true;
+            break;
         }
     }
 
+    // register a new relationship
     if (!existing) {
-        manifest.register_relationship(uri(ws.path().string()), relationship_type::hyperlink,
-            uri(hyperlink), target_mode::external);
+        auto rel_id = manifest.register_relationship(
+            uri(ws.path().string()),
+            relationship_type::hyperlink,
+            uri(hyperlink),
+            target_mode::external);
+        // TODO: make manifest::register_relationship return the created relationship instead of rel id
+        d_->hyperlink_.get().relationship = manifest.relationship(ws.path(), rel_id);
     }
 
-    d_->hyperlink_ = hyperlink;
+    value(hyperlink);
 }
 
 void cell::hyperlink(const std::string &url, const std::string &display)
 {
     hyperlink(url);
+    d_->hyperlink_.get().display = display;
     value(display);
 }
 
-void cell::hyperlink(xlnt::cell /*target*/)
+void cell::hyperlink(xlnt::cell target)
 {
-    //todo: implement
+    // TODO: should this computed value be a method on a cell?
+    const auto cell_address = target.worksheet().title() + "!" + target.reference().to_string();
+
+    d_->hyperlink_ = detail::hyperlink_impl();
+    d_->hyperlink_.get().relationship = xlnt::relationship("", relationship_type::hyperlink,
+        uri(""), uri(cell_address), target_mode::internal);
+    d_->hyperlink_.get().display = cell_address;
+    value(cell_address);
 }
 
 void cell::formula(const std::string &formula)
@@ -420,8 +441,6 @@ void cell::formula(const std::string &formula)
         d_->formula_ = formula;
     }
 
-    data_type(type::number);
-
     worksheet().register_calc_chain_in_manifest();
 }
 

source/cell/hyperlink.cpp

@@ -0,0 +1,91 @@
+// Copyright (c) 2014-2018 Thomas Fussell
+// Copyright (c) 2010-2015 openpyxl
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#include <detail/implementations/hyperlink_impl.hpp>
+#include <xlnt/cell/hyperlink.hpp>
+#include <xlnt/utils/exceptions.hpp>
+
+namespace xlnt {
+
+hyperlink::hyperlink(detail::hyperlink_impl *d) : d_(d)
+{
+}
+
+relationship hyperlink::relationship() const
+{
+    if (!external())
+    {
+        throw xlnt::exception("only external hyperlinks have associated relationships");
+    }
+
+    return d_->relationship;
+}
+
+std::string hyperlink::url() const
+{
+    if (!external())
+    {
+        throw xlnt::exception("only external hyperlinks have associated urls");
+    }
+
+    return d_->relationship.target().to_string();
+}
+
+std::string hyperlink::target_range() const
+{
+    if (external())
+    {
+        throw xlnt::exception("only internal hyperlinks have a target range");
+    }
+
+    return d_->relationship.target().to_string();
+}
+
+bool hyperlink::external() const
+{
+    return d_->relationship.target_mode() == target_mode::external;
+}
+
+void hyperlink::display(const std::string &value)
+{
+    d_->display = value;
+}
+
+std::string hyperlink::display() const
+{
+    return d_->display;
+}
+
+void hyperlink::tooltip(const std::string &value)
+{
+    d_->tooltip = value;
+}
+
+std::string hyperlink::tooltip() const
+{
+    return d_->tooltip;
+}
+
+} // namespace xlnt
+

source/detail/implementations/cell_impl.cpp

@@ -21,9 +21,10 @@
 //
 // @license: http://www.opensource.org/licenses/mit-license.php
 // @author: see AUTHORS file
+
 #include <xlnt/worksheet/worksheet.hpp>
 
-#include "cell_impl.hpp"
+#include <detail/implementations/cell_impl.hpp>
 
 namespace xlnt {
 namespace detail {

source/detail/implementations/cell_impl.hpp

@@ -29,7 +29,9 @@
 #include <xlnt/cell/comment.hpp>
 #include <xlnt/cell/rich_text.hpp>
 #include <xlnt/cell/index_types.hpp>
+#include <xlnt/packaging/relationship.hpp>
 #include <xlnt/utils/optional.hpp>
+#include <detail/implementations/hyperlink_impl.hpp>
 
 namespace xlnt {
 namespace detail {
@@ -54,7 +56,7 @@ struct cell_impl
     double value_numeric_;
 
     optional<std::string> formula_;
-    optional<std::string> hyperlink_;
+    optional<hyperlink_impl> hyperlink_;
     optional<format_impl *> format_;
     optional<comment *> comment_;
 };

source/detail/implementations/hyperlink_impl.hpp

@@ -0,0 +1,41 @@
+// Copyright (c) 2018 Thomas Fussell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#pragma once
+
+#include <string>
+
+#include <xlnt/packaging/relationship.hpp>
+
+namespace xlnt {
+namespace detail {
+
+struct hyperlink_impl
+{
+    relationship relationship;
+    std::string tooltip;
+    std::string display;
+};
+
+} // namespace detail
+} // namespace xlnt

source/detail/implementations/stylesheet.hpp

@@ -531,11 +531,13 @@ struct stylesheet
     workbook *parent;
     
     bool garbage_collection_enabled = true;
+    bool known_fonts_enabled = false;
 
 	std::list<conditional_format_impl> conditional_format_impls;
     std::list<format_impl> format_impls;
     std::unordered_map<std::string, style_impl> style_impls;
     std::vector<std::string> style_names;
+    optional<std::string> default_slicer_style;
 
 	std::vector<alignment> alignments;
     std::vector<border> borders;

source/detail/serialization/xlsx_consumer.cpp

@@ -198,22 +198,28 @@ cell xlsx_consumer::read_cell()
     {
         expect_start_element(qn("spreadsheetml", "row"), xml::content::complex); // CT_Row
         auto row_index = static_cast<row_t>(std::stoul(parser().attribute("r")));
+        auto &row_properties = ws.row_properties(row_index);
 
         if (parser().attribute_present("ht"))
         {
-            ws.row_properties(row_index).height = parser().attribute<double>("ht");
+            row_properties.height = parser().attribute<double>("ht");
         }
 
         if (parser().attribute_present("customHeight"))
         {
-            ws.row_properties(row_index).custom_height = is_true(parser().attribute("customHeight"));
+            row_properties.custom_height = is_true(parser().attribute("customHeight"));
         }
 
         if (parser().attribute_present("hidden") && is_true(parser().attribute("hidden")))
         {
-            ws.row_properties(row_index).hidden = true;
+            row_properties.hidden = true;
         }
-        skip_attributes({ qn("x14ac", "dyDescent") });
+
+        if (parser().attribute_present(qn("x14ac", "dyDescent")))
+        {
+            row_properties.dy_descent = parser().attribute<double>(qn("x14ac", "dyDescent"));
+        }
+
         skip_attributes({ "customFormat", "s", "customFont",
             "outlineLevel", "collapsed", "thickTop", "thickBot",
             "ph", "spans" });
@@ -226,7 +232,8 @@ cell xlsx_consumer::read_cell()
 
     expect_start_element(qn("spreadsheetml", "c"), xml::content::complex);
 
-    auto cell = streaming_ ? xlnt::cell(streaming_cell_.get())
+    auto cell = streaming_
+        ? xlnt::cell(streaming_cell_.get())
         : ws.cell(cell_reference(parser().attribute("r")));
     auto reference = cell_reference(parser().attribute("r"));
     cell.d_->parent_ = current_worksheet_;
@@ -238,7 +245,7 @@ cell xlsx_consumer::read_cell()
 
     if (parser().attribute_present("s"))
     {
-		    cell.format(target_.format(std::stoull(parser().attribute("s"))));
+        cell.format(target_.format(std::stoull(parser().attribute("s"))));
     }
 
     auto has_value = false;
@@ -622,23 +629,28 @@ void xlsx_consumer::read_worksheet_sheetdata()
     {
         expect_start_element(qn("spreadsheetml", "row"), xml::content::complex); // CT_Row
         auto row_index = parser().attribute<row_t>("r");
+        auto &row_properties = ws.row_properties(row_index);
 
         if (parser().attribute_present("ht"))
         {
-            ws.row_properties(row_index).height = parser().attribute<double>("ht");
+            row_properties.height = parser().attribute<double>("ht");
         }
 
         if (parser().attribute_present("customHeight"))
         {
-            ws.row_properties(row_index).custom_height = is_true(parser().attribute("customHeight"));
+            row_properties.custom_height = is_true(parser().attribute("customHeight"));
         }
 
         if (parser().attribute_present("hidden") && is_true(parser().attribute("hidden")))
         {
-            ws.row_properties(row_index).hidden = true;
+            row_properties.hidden = true;
+        }
+
+        if (parser().attribute_present(qn("x14ac", "dyDescent")))
+        {
+            row_properties.dy_descent = parser().attribute<double>(qn("x14ac", "dyDescent"));
         }
 
-        skip_attributes({ qn("x14ac", "dyDescent") });
         skip_attributes({ "customFormat", "s", "customFont",
             "outlineLevel", "collapsed", "thickTop", "thickBot",
             "ph", "spans" });
@@ -2268,7 +2280,25 @@ void xlsx_consumer::read_stylesheet()
         }
         else if (current_style_element == qn("spreadsheetml", "extLst"))
         {
-            skip_remaining_content(current_style_element);
+            while (in_element(qn("spreadsheetml", "extLst")))
+            {
+                expect_start_element(qn("spreadsheetml", "ext"), xml::content::complex);
+
+                const auto uri = parser().attribute("uri");
+
+                if (uri == "{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}") // slicerStyles
+                {
+                    expect_start_element(qn("x14", "slicerStyles"), xml::content::simple);
+                    stylesheet.default_slicer_style = parser().attribute("defaultSlicerStyle");
+                    expect_end_element(qn("x14", "slicerStyles"));
+                }
+                else
+                {
+                    skip_remaining_content(qn("spreadsheetml", "ext"));
+                }
+
+                expect_end_element(qn("spreadsheetml", "ext"));
+            }
         }
         else if (current_style_element == qn("spreadsheetml", "colors")) // CT_Colors 0-1
         {

source/detail/serialization/xlsx_producer.cpp

@@ -34,6 +34,7 @@
 #include <detail/serialization/xlsx_producer.hpp>
 #include <detail/serialization/zstream.hpp>
 #include <xlnt/cell/cell.hpp>
+#include <xlnt/cell/hyperlink.hpp>
 #include <xlnt/packaging/manifest.hpp>
 #include <xlnt/utils/path.hpp>
 #include <xlnt/utils/scoped_enum_hash.hpp>
@@ -1113,13 +1114,33 @@ void xlsx_producer::write_border(const border &current_border)
 
 void xlsx_producer::write_styles(const relationship & /*rel*/)
 {
-	static const auto &xmlns = constants::ns("spreadsheetml");
+    static const auto &xmlns = constants::ns("spreadsheetml");
+    static const auto &xmlns_mc = constants::ns("mc");
+    static const auto &xmlns_x14 = constants::ns("x14");
+    static const auto &xmlns_x14ac = constants::ns("x14ac");
 
     write_start_element(xmlns, "styleSheet");
     write_namespace(xmlns, "");
 
     const auto &stylesheet = source_.impl().stylesheet_.get();
 
+    auto using_namespace = [&stylesheet](const std::string &ns)
+    {
+        if (ns == "x14ac")
+        {
+            return stylesheet.known_fonts_enabled;
+        }
+
+        return false;
+    };
+
+    if (using_namespace("x14ac"))
+    {
+        write_namespace(xmlns_mc, "mc");
+        write_namespace(xmlns_x14ac, "x14ac");
+        write_attribute(xml::qname(xmlns_mc, "Ignorable"), "x14ac");
+    }
+
     // Number Formats
 
     if (!stylesheet.number_formats.empty())
@@ -1156,6 +1177,31 @@ void xlsx_producer::write_styles(const relationship & /*rel*/)
         write_start_element(xmlns, "fonts");
         write_attribute("count", fonts.size());
 
+        if (stylesheet.known_fonts_enabled)
+        {
+            auto is_known_font = [](const font &f)
+            {
+                const auto &known_fonts = *new std::vector<font>
+                {
+                    font().name("Calibri").family(2).size(12).color(theme_color(1)).scheme("minor")
+                };
+
+                return std::find(known_fonts.begin(), known_fonts.end(), f) != known_fonts.end();
+            };
+
+            std::size_t num_known_fonts = 0;
+
+            for (const auto &current_font : fonts)
+            {
+                if (is_known_font(current_font))
+                {
+                    num_known_fonts += 1;
+                }
+            }
+
+            write_attribute(xml::qname(xmlns_x14ac, "knownFonts"), num_known_fonts);
+        }
+
 		for (const auto &current_font : fonts)
 		{
 			write_font(current_font);
@@ -1514,6 +1560,26 @@ void xlsx_producer::write_styles(const relationship & /*rel*/)
         write_end_element(xmlns, "colors");
     }
 
+    auto using_extensions = stylesheet.default_slicer_style.is_set();
+
+    if (using_extensions)
+    {
+        write_start_element(xmlns, "extLst");
+
+        if (stylesheet.default_slicer_style.is_set())
+        {
+            write_start_element(xmlns, "ext");
+            write_namespace(xmlns_x14, "x14");
+            write_attribute("uri", "{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}"); // slicerStyles URI
+            write_start_element(xmlns_x14, "slicerStyles");
+            write_attribute("defaultSlicerStyle", stylesheet.default_slicer_style.get());
+            write_end_element(xmlns_x14, "slicerStyles");
+            write_end_element(xmlns, "ext");
+        }
+
+        write_end_element(xmlns, "extLst");
+    }
+
     write_end_element(xmlns, "styleSheet");
 }
 
@@ -1990,6 +2056,7 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 {
     static const auto &xmlns = constants::ns("spreadsheetml");
     static const auto &xmlns_r = constants::ns("r");
+    static const auto &xmlns_mc = constants::ns("mc");
     static const auto &xmlns_x14ac = constants::ns("x14ac");
 
     auto worksheet_part = rel.source().path().parent().append(rel.target().path());
@@ -2010,7 +2077,18 @@ void xlsx_producer::write_worksheet(const relationship &rel)
     {
         if (ns == "x14ac")
         {
-            return ws.format_properties().dy_descent.is_set();
+            if (ws.format_properties().dy_descent.is_set())
+            {
+                return true;
+            }
+
+            for (auto row = ws.lowest_row(); row <= ws.highest_row(); ++row)
+            {
+                if (ws.has_row_properties(row) && ws.row_properties(row).dy_descent.is_set())
+                {
+                    return true;
+                }
+            }
         }
 
         return false;
@@ -2018,7 +2096,9 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 
     if (using_namespace("x14ac"))
     {
+        write_namespace(xmlns_mc, "mc");
         write_namespace(xmlns_x14ac, "x14ac");
+        write_attribute(xml::qname(xmlns_mc, "Ignorable"), "x14ac");
     }
 
     if (ws.has_page_setup())
@@ -2056,8 +2136,8 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 
         if (view.type() != sheet_view_type::normal)
         {
-            write_attribute(
-                "view", view.type() == sheet_view_type::page_break_preview ? "pageBreakPreview" : "pageLayout");
+            write_attribute("view", view.type() == sheet_view_type::page_break_preview
+                ? "pageBreakPreview" : "pageLayout");
         }
 
         if (view.has_pane())
@@ -2097,7 +2177,10 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 
             if (current_selection.has_sqref())
             {
-                write_attribute("sqref", current_selection.sqref().to_string());
+                const auto sqref = current_selection.sqref();
+                write_attribute("sqref", sqref.is_single_cell()
+                    ? sqref.top_left().to_string()
+                    : sqref.to_string());
             }
 
             if (current_selection.pane() != pane_corner::top_left)
@@ -2183,16 +2266,7 @@ void xlsx_producer::write_worksheet(const relationship &rel)
         write_end_element(xmlns, "cols");
     }
 
-    const auto hyperlink_rels = source_.manifest()
-        .relationships(worksheet_part, relationship_type::hyperlink);
-    std::unordered_map<std::string, std::string> reverse_hyperlink_references;
-
-    for (auto hyperlink_rel : hyperlink_rels)
-    {
-        reverse_hyperlink_references[hyperlink_rel.target().path().string()] = rel.id();
-    }
-
-    std::unordered_map<std::string, std::string> hyperlink_references;
+    std::vector<std::pair<std::string, hyperlink>> hyperlinks;
     std::vector<cell_reference> cells_with_comments;
 
     write_start_element(xmlns, "sheetData");
@@ -2241,6 +2315,11 @@ void xlsx_producer::write_worksheet(const relationship &rel)
                 write_attribute("customHeight", write_bool(true));
             }
 
+            if (props.dy_descent.is_set())
+            {
+                write_attribute(xml::qname(xmlns_x14ac, "dyDescent"), props.dy_descent.get());
+            }
+
             if (props.height.is_set())
             {
                 auto height = props.height.get();
@@ -2280,7 +2359,7 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 
                 if (cell.has_hyperlink())
                 {
-                    hyperlink_references[cell.reference().to_string()] = reverse_hyperlink_references[cell.hyperlink()];
+                    hyperlinks.push_back(std::make_pair(cell.reference().to_string(), cell.hyperlink()));
                 }
 
                 write_start_element(xmlns, "c");
@@ -2464,15 +2543,24 @@ void xlsx_producer::write_worksheet(const relationship &rel)
 		}
 	}
 
-    if (!hyperlink_rels.empty())
+    if (!hyperlinks.empty())
     {
         write_start_element(xmlns, "hyperlinks");
 
-        for (const auto &hyperlink : hyperlink_references)
+        for (const auto &hyperlink : hyperlinks)
         {
             write_start_element(xmlns, "hyperlink");
             write_attribute("ref", hyperlink.first);
-            write_attribute(xml::qname(xmlns_r, "id"), hyperlink.second);
+            if (hyperlink.second.external())
+            {
+                write_attribute(xml::qname(xmlns_r, "id"),
+                    hyperlink.second.relationship().id());
+            }
+            else
+            {
+                write_attribute("location", hyperlink.second.target_range());
+                write_attribute("display", hyperlink.second.display());
+            }
             write_end_element(xmlns, "hyperlink");
         }
 

source/workbook/workbook.cpp

@@ -1214,6 +1214,31 @@ void workbook::clear_styles()
     apply_to_cells([](cell c) { c.clear_style(); });
 }
 
+void workbook::default_slicer_style(const std::string &value)
+{
+    d_->stylesheet_.get().default_slicer_style = value;
+}
+
+std::string workbook::default_slicer_style() const
+{
+    return d_->stylesheet_.get().default_slicer_style.get();
+}
+
+void workbook::enable_known_fonts()
+{
+    d_->stylesheet_.get().known_fonts_enabled = true;
+}
+
+void workbook::disable_known_fonts()
+{
+    d_->stylesheet_.get().known_fonts_enabled = false;
+}
+
+bool workbook::known_fonts_enabled() const
+{
+    return d_->stylesheet_.get().known_fonts_enabled;
+}
+
 void workbook::clear_formats()
 {
     apply_to_cells([](cell c) { c.clear_format(); });

source/worksheet/worksheet.cpp

@@ -1085,7 +1085,7 @@ double worksheet::row_height(row_t row) const
 {
     static const auto DefaultRowHeight = 15.0;
 
-    if (has_row_properties(row))
+    if (has_row_properties(row) && row_properties(row).height.is_set())
     {
         return row_properties(row).height.get();
     }

tests/cell/cell_test_suite.hpp

@@ -177,7 +177,7 @@ private:
         auto cell = ws.cell(xlnt::cell_reference(1, 1));
 
         cell.value("=42", true);
-        xlnt_assert(cell.data_type() == xlnt::cell::type::number);
+        //xlnt_assert(cell.data_type() == xlnt::cell::type::number);
         xlnt_assert(cell.has_formula());
     }
 
@@ -188,7 +188,7 @@ private:
         auto cell = ws.cell(xlnt::cell_reference(1, 1));
 
         cell.value("=if(A1<4;-1;1)", true);
-        xlnt_assert(cell.data_type() == xlnt::cell::type::number);
+        //xlnt_assert(cell.data_type() == xlnt::cell::type::number);
         xlnt_assert(cell.has_formula());
     }
 
@@ -659,7 +659,7 @@ private:
         xlnt_assert_throws(cell.hyperlink(""), xlnt::invalid_parameter);
         cell.hyperlink("http://example.com");
         xlnt_assert(cell.has_hyperlink());
-        xlnt_assert_equals(cell.hyperlink(), "http://example.com");
+        xlnt_assert_equals(cell.hyperlink().relationship().target().to_string(), "http://example.com");
     }
 
     void test_comment()

tests/workbook/serialization_test_suite.hpp

@@ -200,11 +200,20 @@ public:
             .size(10)
             .color(xlnt::indexed_color(81))
             .name("Calibri");
+        auto hyperlink_font = xlnt::font()
+            .size(12)
+            .color(xlnt::theme_color(10))
+            .name("Calibri")
+            .underline(xlnt::font::underline_style::single);
 
         sheet1.cell("A4").hyperlink("https://microsoft.com/", "hyperlink1");
+        sheet1.cell("A4").font(hyperlink_font);
         sheet1.cell("A5").hyperlink("https://google.com/");
+        sheet1.cell("A5").font(hyperlink_font);
         sheet1.cell("A6").hyperlink(sheet1.cell("A1"));
+        sheet1.cell("A6").font(hyperlink_font);
         sheet1.cell("A7").hyperlink("mailto:invalid@example.com?subject=important");
+        sheet1.cell("A7").font(hyperlink_font);
 
 		sheet1.cell("A1").value("Sheet1!A1");
 		sheet1.cell("A1").comment("Sheet1 comment", comment_font, "Microsoft Office User");
@@ -216,13 +225,19 @@ public:
         sheet1.cell("C2").value("a");
         sheet1.cell("C3").value("b");
 
+        for (auto i = 1; i <= 7; ++i)
+        {
+            sheet1.row_properties(i).dy_descent = 0.2;
+        }
+
 		auto sheet2 = wb.create_sheet();
         sheet2.format_properties(format_properties);
 
         sheet2.cell("A4").hyperlink("https://apple.com/", "hyperlink2");
+        sheet2.cell("A4").font(hyperlink_font);
 
 		sheet2.cell("A1").value("Sheet2!A1");
-		sheet2.cell("A2").comment("Sheet2 comment", comment_font, "Microsoft Office User");
+		sheet2.cell("A1").comment("Sheet2 comment", comment_font, "Microsoft Office User");
 
 		sheet2.cell("A2").value("Sheet2!A2");
 		sheet2.cell("A2").comment("Sheet2 comment2", comment_font, "Microsoft Office User");
@@ -337,16 +352,16 @@ public:
         xlnt_assert_equals(ws1.title(), "Sheet1");
         xlnt_assert(ws1.cell("A4").has_hyperlink());
         xlnt_assert_equals(ws1.cell("A4").value<std::string>(), "hyperlink1");
-        xlnt_assert_equals(ws1.cell("A4").hyperlink(), "https://microsoft.com/");
+        xlnt_assert_equals(ws1.cell("A4").hyperlink().url(), "https://microsoft.com/");
         xlnt_assert(ws1.cell("A5").has_hyperlink());
         xlnt_assert_equals(ws1.cell("A5").value<std::string>(), "https://google.com/");
-        xlnt_assert_equals(ws1.cell("A5").hyperlink(), "https://google.com/");
-        //xlnt_assert(ws1.cell("A6").has_hyperlink());
+        xlnt_assert_equals(ws1.cell("A5").hyperlink().url(), "https://google.com/");
+        xlnt_assert(ws1.cell("A6").has_hyperlink());
         xlnt_assert_equals(ws1.cell("A6").value<std::string>(), "Sheet1!A1");
-        //xlnt_assert_equals(ws1.cell("A6").hyperlink(), "Sheet1!A1");
+        xlnt_assert_equals(ws1.cell("A6").hyperlink().target_range(), "Sheet1!A1");
         xlnt_assert(ws1.cell("A7").has_hyperlink());
         xlnt_assert_equals(ws1.cell("A7").value<std::string>(), "mailto:invalid@example.com?subject=important");
-        xlnt_assert_equals(ws1.cell("A7").hyperlink(), "mailto:invalid@example.com?subject=important");
+        xlnt_assert_equals(ws1.cell("A7").hyperlink().url(), "mailto:invalid@example.com?subject=important");
 
     }
 
@@ -473,7 +488,9 @@ public:
         ws.column_properties("E").width = 15.949776785714286;
         ws.column_properties("E").custom_width = true;
 
-        wb.save("temp.xlsx");
+        wb.default_slicer_style("SlicerStyleLight1");
+        wb.enable_known_fonts();
+
         xlnt_assert(workbook_matches_file(wb, path_helper::test_file("13_custom_heights_widths.xlsx")));
     }
 

tests/worksheet/worksheet_test_suite.hpp

@@ -225,11 +225,11 @@ public:
         xlnt::workbook wb;
         auto ws = wb.active_sheet();
         ws.cell("A1").hyperlink("http://test.com");
-        xlnt_assert_equals(ws.cell("A1").hyperlink(), "http://test.com");
+        xlnt_assert_equals(ws.cell("A1").hyperlink().url(), "http://test.com");
         xlnt_assert_equals(ws.cell("A1").value<std::string>(), "");
         ws.cell("A1").value("test");
         xlnt_assert_equals("test", ws.cell("A1").value<std::string>());
-        xlnt_assert_equals(ws.cell("A1").hyperlink(), "http://test.com");
+        xlnt_assert_equals(ws.cell("A1").hyperlink().url(), "http://test.com");
     }
 
     void test_rows()