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css: Support overline

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We can support text-decoration-line: overline,
since pango supports it now.
This commit is contained in:
Matthias Clasen 2021-01-26 00:04:04 -05:00
parent ea48506a32
commit 65a4118d50
4 changed files with 16 additions and 1 deletions
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2
docs/reference/gtk/css-properties.md
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@ -151,7 +151,7 @@ done with
|caret-color|[CSS Basic User Interface Level 3](https://www.w3.org/TR/css3-ui/#caret-color) | CSS allows an auto value |
|-gtk-secondary-caret-color|[Color](https://www.w3.org/TR/css-color-3/#valuea-def-color) | used for the secondary caret in bidirectional text |
|letter-spacing| [CSS Text Level 3](https://www.w3.org/TR/css3-text/#letter-spacing) | |
|text-decoration-line| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-line-property) | CSS allows overline |
|text-decoration-line| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-line-property) | |
|text-decoration-color| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-color-property) | |
|text-decoration-style| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-decoration-style-property) | CSS allows dashed and dotted |
|text-shadow| [CSS Text Decoration Level 3](https://www.w3.org/TR/css-text-decor-3/#text-shadow-property) | |

1
gtk/gtkcssenumvalue.c
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@ -561,6 +561,7 @@ static const GtkCssValueClass GTK_CSS_VALUE_TEXT_DECORATION_LINE = {
static GtkCssValue text_decoration_line_values[] = {
{ &GTK_CSS_VALUE_TEXT_DECORATION_LINE, 1, TRUE, GTK_CSS_TEXT_DECORATION_LINE_NONE, "none" },
{ &GTK_CSS_VALUE_TEXT_DECORATION_LINE, 1, TRUE, GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE, "underline" },
{ &GTK_CSS_VALUE_TEXT_DECORATION_LINE, 1, TRUE, GTK_CSS_TEXT_DECORATION_LINE_OVERLINE, "overline" },
{ &GTK_CSS_VALUE_TEXT_DECORATION_LINE, 1, TRUE, GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH, "line-through" },
};

13
gtk/gtkcssstyle.c
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@ -397,6 +397,12 @@ get_pango_underline_from_style (GtkTextDecorationStyle style)
g_return_val_if_reached (PANGO_UNDERLINE_SINGLE);
}
static PangoOverline
get_pango_overline_from_style (GtkTextDecorationStyle style)
{
return PANGO_OVERLINE_SINGLE;
}
static PangoAttrList *
add_pango_attr (PangoAttrList *attrs,
PangoAttribute *attr)
@ -454,6 +460,13 @@ gtk_css_style_get_pango_attributes (GtkCssStyle *style)
decoration_color->green * 65535. + 0.5,
decoration_color->blue * 65535. + 0.5));
break;
case GTK_CSS_TEXT_DECORATION_LINE_OVERLINE:
attrs = add_pango_attr (attrs, pango_attr_overline_new (get_pango_overline_from_style (decoration_style)));
if (!gdk_rgba_equal (color, decoration_color))
attrs = add_pango_attr (attrs, pango_attr_overline_color_new (decoration_color->red * 65535. + 0.5,
decoration_color->green * 65535. + 0.5,
decoration_color->blue * 65535. + 0.5));
break;
case GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH:
attrs = add_pango_attr (attrs, pango_attr_strikethrough_new (TRUE));
if (!gdk_rgba_equal (color, decoration_color))

1
gtk/gtkcsstypesprivate.h
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@ -327,6 +327,7 @@ typedef enum /*< skip >*/ {
typedef enum /*< skip >*/ {
GTK_CSS_TEXT_DECORATION_LINE_NONE,
GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE,
GTK_CSS_TEXT_DECORATION_LINE_OVERLINE,
GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH
} GtkTextDecorationLine;