bump crengine: tables rendering improvements and others

bump crengine, which includes:
- Adds support for symbol fonts (local or embedded)
- Fix some issues when rendering text in constrained width
- Page splitting: fix possible missing blocks
- CSS: adds support for 'auto', ignore % for borders
- Fix right border drawing position
- Fix: adds missing properties in copystyle()
- Adds comments, erm_killed rendering method
- Adds getRenderedWidths(): get node min/max node content width
- Tables rendering: fixes and improvements
- getRenderedWidths: enable min_width to be a single CJK char
- Fix wrong text wrap avoid in some case
- epub.css: add style for 'blockquote'
- Fix rendering issue when line ends with an image

Adds a few style tweaks related to tables.

Enforce table width: 100% in Wikipedia EPUBs to keep
previous look, which feels better with the various kinds
of tables in Wikipedia pages.

Fix unit tests as juliet.epub (full of blockquotes), grew quite
a few pages with the epub.css update.

frontend/apps/reader/modules/readerhighlight.lua

@@ -392,6 +392,7 @@ function ReaderHighlight:viewSelectionHTML(debug_view)
             -- Each node on a line, with markers and numbers of skipped chars and siblings shown,
             -- with possibly invalid HTML (text nodes not escaped)
             html_flags = 0x3353
+            -- html_flags = 0x3753 -- use this to additionally see rendering methods
         end
         local html, css_files = self.ui.document:getHTMLFromXPointers(self.selected_text.pos0,
                                     self.selected_text.pos1, html_flags, true)

frontend/ui/data/css_tweaks.lua

@@ -191,40 +191,72 @@ h1, h2, h3, h4, h5, h6 { hyphens: none !important; }
     {
         title = _("Miscellaneous"),
         {
-            id = "table_row_odd_even";
-            title = _("Alternate background color of table rows"),
-            css = [[
+            title = _("Tables"),
+            {
+                id = "table_full_width";
+                title = _("Full-width tables"),
+                description = _("Make table expand to the full width of the page. (Tables with small content now use only the width needed to display that content. This restores the previous behavior.)"),
+                css = [[table { width: 100% !important; }]],
+            },
+            {
+                id = "table_td_width_auto";
+                title = _("Ignore publisher table and cell widths"),
+                description = _("Ignore table and cells widths specified by the publisher, and let the engine decide the most appropriate widths."),
+                css = [[table, td, th { width: auto !important; }]],
+            },
+            {
+                id = "table_margin_left_right_auto";
+                title = _("Center small tables"),
+                description = _("Horizontally center tables that do not use the full page width."),
+                css = [[table { margin-left: auto !important; margin-right: auto !important; }]],
+                separator = true,
+            },
+            {
+                id = "td_vertical_align_none";
+                title = _("Ignore publisher vertical alignment in tables"),
+                -- Using "vertical-align: top" would vertical-align children text nodes to top.
+                -- "vertical-align: baseline" has no meaning in table rendering, and is as fine
+                css = [[td { vertical-align: baseline !important; }]],
+            },
+            {
+                id = "table_row_odd_even";
+                title = _("Alternate background color of table rows"),
+                css = [[
 tr:nth-child(odd)  { background-color: #EEE !important; }
 tr:nth-child(even) { background-color: #CCC !important; }
-            ]],
-        },
-        {
-            id = "table_force_border";
-            title = _("Show borders on all tables"),
-            css = [[
+                ]],
+            },
+            {
+                id = "table_force_border";
+                title = _("Show borders on all tables"),
+                css = [[
 table, tcaption, tr, th, td { border: black solid 1px; border-collapse: collapse; }
-            ]],
-            separator = true,
+                ]],
+                separator = true,
+            },
         },
         {
-            id = "image_full_width";
-            title = _("Make images full width"),
-            description = _("Useful for books containing only images, when they are smaller than your screen. May stretch images in some cases."),
-            -- This helped me once with a book. Will mess with aspect ratio
-            -- when images have a style="width: NNpx; heigh: NNpx"
-            css = [[
+            title = _("Images"),
+            {
+                id = "image_full_width";
+                title = _("Full-width images"),
+                description = _("Useful for books containing only images, when they are smaller than your screen. May stretch images in some cases."),
+                -- This helped me once with a book. Will mess with aspect ratio
+                -- when images have a style="width: NNpx; heigh: NNpx"
+                css = [[
 img {
    text-align: center !important;
    text-indent: 0px !important;
    display: block !important;
    width: 100% !important;
 }
-            ]],
-        },
-        {
-            id = "image_valign_middle";
-            title = _("Vertically center-align images relative to text"),
-            css = [[img { vertical-align: middle; }]],
+                ]],
+            },
+            {
+                id = "image_valign_middle";
+                title = _("Vertically center-align images relative to text"),
+                css = [[img { vertical-align: middle; }]],
+            },
         },
     },
     -- No current need for workarounds

frontend/ui/wikipedia.lua

@@ -992,6 +992,13 @@ li.gallerybox div.gallerytext p {
 .citation {
     font-style: italic;
 }
+/* make tables full-width - Wikipedia tables are often set as float
+ * elements and have a fixed width, often in em (22em), which would
+ * make them quite small with blank space on their right, as we don't
+ * support float */
+table {
+    width: 100% !important;
+}
 /* hide some view/edit/discuss short links displayed as "v m d" */
 .nv-view, .nv-edit, .nv-talk {
     display: none;

spec/unit/readerfooter_spec.lua

@@ -146,7 +146,7 @@ describe("Readerfooter module", function()
         local timeinfo = footer.textGeneratorMap.time()
         local page_count = readerui.document:getPageCount()
         -- stats has not been initialized here, so we get na TB and TC
-        assert.are.same('1 / '..page_count..' | '..timeinfo..' | => 0 | B:0% | R:1% | TB: na | TC: na',
+        assert.are.same('1 / '..page_count..' | '..timeinfo..' | => 1 | B:0% | R:0% | TB: na | TC: na',
                         footer.footer_text.text)
     end)
 
@@ -295,8 +295,8 @@ describe("Readerfooter module", function()
         assert.are.same(365, footer.text_width)
 
         footer:onPageUpdate(100)
-        assert.are.same(191, footer.progress_bar.width)
-        assert.are.same(389, footer.text_width)
+        assert.are.same(183, footer.progress_bar.width)
+        assert.are.same(397, footer.text_width)
     end)
 
     it("should support chapter markers", function()
@@ -545,7 +545,7 @@ describe("Readerfooter module", function()
         assert.is.same(0, footer.text_width)
 
         tapFooterMenu(fake_menu, "Progress percentage")
-        assert.are.same('R:1%', footer.footer_text.text)
+        assert.are.same('R:0%', footer.footer_text.text)
         assert.is.same(false, footer.has_no_mode)
         assert.is.same(footer.footer_text:getSize().w + footer.text_left_margin,
                        footer.text_width)

spec/unit/readerhighlight_spec.lua

@@ -85,22 +85,22 @@ describe("Readerhighlight module", function()
             readerui.highlight:clear()
         end)
         it("should highlight single word", function()
-            highlight_single_word(readerui, Geom:new{ x = 260, y = 80 })
+            highlight_single_word(readerui, Geom:new{ x = 400, y = 110 })
             Screen:shot("screenshots/reader_highlight_single_word_epub.png")
             assert.truthy(readerui.view.highlight.saved[page])
         end)
         it("should highlight text", function()
             highlight_text(readerui,
-                           Geom:new{ x = 260, y = 60 },
-                           Geom:new{ x = 260, y = 90 })
+                           Geom:new{ x = 400, y = 110 },
+                           Geom:new{ x = 400, y = 170 })
             Screen:shot("screenshots/reader_highlight_text_epub.png")
             assert.truthy(readerui.view.highlight.saved[page])
         end)
         it("should response on tap gesture", function()
             tap_highlight_text(readerui,
-                               Geom:new{ x = 151, y = 120  },
-                               Geom:new{ x = 290, y = 301 },
-                               Geom:new{ x = 200, y = 268 })
+                               Geom:new{ x = 151, y = 115  },
+                               Geom:new{ x = 300, y = 285 },
+                               Geom:new{ x = 120, y = 240 })
             Screen:shot("screenshots/reader_tap_highlight_text_epub.png")
         end)
     end)

spec/unit/readerrolling_spec.lua

@@ -186,13 +186,13 @@ describe("Readerrolling module", function()
         it("should show pages for different word gap", function()
             readerui.document:setSpaceCondensing(100)
             readerui:handleEvent(Event:new("ChangeScreenMode", "portrait"))
-            assert.are.same(191, readerui.document:getPageCount())
+            assert.are.same(267, readerui.document:getPageCount())
             readerui.document:setSpaceCondensing(75)
             readerui:handleEvent(Event:new("ChangeScreenMode", "portrait"))
-            assert.are.same(189, readerui.document:getPageCount())
+            assert.are.same(262, readerui.document:getPageCount())
             readerui.document:setSpaceCondensing(50)
             readerui:handleEvent(Event:new("ChangeScreenMode", "portrait"))
-            assert.are.same(189, readerui.document:getPageCount())
+            assert.are.same(248, readerui.document:getPageCount())
         end)
     end)
 

spec/unit/readersearch_spec.lua

@@ -67,7 +67,7 @@ describe("Readersearch module", function()
         it("should find the last occurrence", function()
             -- local logger = require("logger")
             -- logger.info("nb of pages", doc:getPageCount())
-            -- 20180723: currently 189 pages
+            -- 20181206: currently 267 pages
             for i = 100, 180, 10 do
                 rolling:onGotoPage(i)
                 local words = search:searchFromEnd("Verona")
@@ -76,7 +76,7 @@ describe("Readersearch module", function()
                 -- logger.info("last match on page", pageno)
                 assert.truthy(pageno > 185)
             end
-            for i = 230, 235, 1 do
+            for i = 290, 335, 1 do
                 rolling:onGotoPage(i)
                 local words = search:searchFromEnd("Verona")
                 assert(words == nil)

spec/unit/readertoc_spec.lua

@@ -22,10 +22,10 @@ describe("Readertoc module", function()
         assert.are.same(2, toc_max_depth)
     end)
     it("should get toc title from page", function()
-        title = toc:getTocTitleByPage(49)
+        title = toc:getTocTitleByPage(60)
         DEBUG("toc", toc.toc)
         assert(title == "SCENE V. A hall in Capulet's house.")
-        title = toc:getTocTitleByPage(143)
+        title = toc:getTocTitleByPage(195)
         assert(title == "SCENE I. Friar Laurence's cell.")
     end)
     describe("getTocTicks API", function()
@@ -59,7 +59,7 @@ describe("Readertoc module", function()
     it("should get page of next chapter", function()
         assert.truthy(toc:getNextChapter(10, 0) > 10)
         assert.truthy(toc:getNextChapter(100, 0) > 100)
-        assert.are.same(nil, toc:getNextChapter(200, 0))
+        assert.are.same(nil, toc:getNextChapter(290, 0))
     end)
     it("should get page of previous chapter", function()
         assert.truthy(toc:getPreviousChapter(10, 0) < 10)
@@ -68,13 +68,13 @@ describe("Readertoc module", function()
     end)
     it("should get page left of chapter", function()
         assert.truthy(toc:getChapterPagesLeft(10, 0) > 10)
-        assert.truthy(toc:getChapterPagesLeft(92, 0) > 10)
-        assert.are.same(nil, toc:getChapterPagesLeft(200, 0))
+        assert.truthy(toc:getChapterPagesLeft(102, 0) > 10)
+        assert.are.same(nil, toc:getChapterPagesLeft(290, 0))
     end)
     it("should get page done of chapter", function()
         assert.truthy(toc:getChapterPagesDone(12, 0) < 5)
         assert.truthy(toc:getChapterPagesDone(95, 0) < 5)
-        assert.truthy(toc:getChapterPagesDone(204, 0) > 10)
+        assert.truthy(toc:getChapterPagesDone(290, 0) > 10)
     end)
     describe("collasible TOC", function()
         it("should collapse the secondary toc nodes by default", function()