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Style tweaks: update for latest epub.css, added a few more

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- Updated "Avoid page break" tweaks to work on our latest epub.css.
- Added "New page on headings>" menu, as we no more break page on
H1, H2, H3 in EPUBs.
- Added "Center headings" as we no more have them centered.
- Added "Pure black and white" which can make some documents
  more readable.
This commit is contained in:
poire-z
2019-07-14 22:21:27 +02:00
parent 8b612142b7
commit aedc5a4806
1 changed files with 72 additions and 2 deletions
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74
frontend/ui/data/css_tweaks.lua
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@@ -48,9 +48,59 @@ local CssTweaks = {
* { page-break-before: auto !important; page-break-after: auto !important; }
/* put back epub.css page-breaks */
DocFragment { page-break-before: always !important; }
h1, h2, h3 { page-break-before: always !important; page-break-after: avoid !important; }
h4, h5, h6 { page-break-after: avoid !important; }
h1 { -cr-only-if: -epub-document; page-break-before: always !important; }
h2, h3 { -cr-only-if: legacy -epub-document; page-break-before: always !important; }
h1, h2, h3, h4, h5, h6 { page-break-after: avoid !important; }
]],
separator = true,
},
{
title = _("New page on headings"),
{
id = "h1_page-break-before_always";
title = _("New page on <H1>"),
css = [[h1 { page-break-before: always !important; }]],
},
{
id = "h2_page-break-before_always";
title = _("New page on <H2>"),
css = [[
h2 { page-break-before: always !important; }
h1 + h2 { page-break-before: avoid !important; }
]],
},
{
id = "h3_page-break-before_always";
title = _("New page on <H3>"),
css = [[
h3 { page-break-before: always !important; }
h1 + h3, h2 + h3 { page-break-before: avoid !important; }
]],
},
{
id = "h4_page-break-before_always";
title = _("New page on <H4>"),
css = [[
h4 { page-break-before: always !important; }
h1 + h4, h2 + h4, h3 + h4 { page-break-before: avoid !important; }
]],
},
{
id = "h5_page-break-before_always";
title = _("New page on <H5>"),
css = [[
h5 { page-break-before: always !important; }
h1 + h5, h2 + h5, h3 + h5, h4 + h5 { page-break-before: avoid !important; }
]],
},
{
id = "h6_page-break-before_always";
title = _("New page on <H6>"),
css = [[
h6 { page-break-before: always !important; }
h1 + h6, h2 + h6, h3 + h6, h4 + h6, h5 + h6 { page-break-before: avoid !important; }
]],
},
},
},
{
@@ -83,6 +133,13 @@ h4, h5, h6 { page-break-after: avoid !important; }
title = _("Justify all elements"),
description = _("Text justification is the default, but it may be overridden by publisher styles. This will re-enable it for all elements, which may lose centering in some of them."),
css = [[* { text-align: justify !important; }]],
separator = true,
},
{
id = "headings_align_center",
title = _("Center headings"),
css = [[h1, h2, h3, h4, h5, h6 { text-align: center !important; }]],
priority = 3, -- so it overrides the ones above
},
},
{
@@ -521,6 +578,19 @@ switch > case { display: inline; }
switch > default { display: none; }
]],
},
{
id = "pure_black_and_white";
title = _("Pure black and white"),
description = _([[Enforce black text and borders, and remove backgrounds.]]),
css = [[
* {
color: black !important;
border-color: black !important;
background-color: transparent !important;
background-image: !important;
}
]], -- (This last empty background-image: works for cancelling any previous one
},
},
-- No current need for workarounds
-- {