Sets the font options used when rendering text with this context.
These options override any options that [funcupdate_context]
derives from the target surface.
a PangoContext, from a pangocairo font map
a cairo_font_options_t, or %NULL to unset any previously set options. A copy is made.
Sets the resolution for the context.
This is a scale factor between points specified in a PangoFontDescription
and Cairo units. The default value is 96, meaning that a 10 point font will
be 13 units high. (10 * 96. / 72. = 13.3).
a PangoContext, from a pangocairo font map
the resolution in "dots per inch". (Physical inches aren't actually involved; the terminology is conventional.) A 0 or negative value means to use the resolution from the font map.
Sets callback function for context to use for rendering attributes of type %PANGO_ATTR_SHAPE.
See PangoCairoShapeRendererFunc for details.
a PangoContext, from a pangocairo font map
Callback function for rendering attributes of type %PANGO_ATTR_SHAPE, or %NULL to disable shape rendering.
Creates a context object set up to match the current transformation and target surface of the Cairo context.
This context can then be
used to create a layout using [ctorPango.Layout.new].
This function is a convenience function that creates a context using
the default font map, then updates it to cr. If you just need to
create a layout for use with cr and do not need to access PangoContext
directly, you can use [funccreate_layout] instead.
Creates a layout object set up to match the current transformation and target surface of the Cairo context.
This layout can then be used for text measurement with functions
like [methodPango.Layout.get_size] or drawing with functions like
[funcshow_layout]. If you change the transformation or target
surface for cr, you need to call [funcupdate_layout].
This function is the most convenient way to use Cairo with Pango,
however it is slightly inefficient since it creates a separate
PangoContext object for each layout. This might matter in an
application that was laying out large amounts of text.
Add a squiggly line to the current path in the specified cairo context that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.
The width of the underline is rounded to an integer number of up/down segments and the resulting rectangle is centered in the original rectangle.
a Cairo context
The X coordinate of one corner of the rectangle
The Y coordinate of one corner of the rectangle
Non-negative width of the rectangle
Non-negative height of the rectangle
Gets a default PangoCairoFontMap to use with Cairo.
Note that the type of the returned object will depend on the
particular font backend Cairo was compiled to use; you generally
should only use the PangoFontMap and PangoCairoFontMap
interfaces on the returned object.
The default Cairo fontmap can be changed by using
[methodPangoCairo.FontMap.set_default]. This can be used to
change the Cairo font backend that the default fontmap uses
for example.
Note that since Pango 1.32.6, the default fontmap is per-thread. Each thread gets its own default fontmap. In this way, PangoCairo can be used safely from multiple threads.
Creates a new PangoCairoFontMap object.
A fontmap is used to cache information about available fonts,
and holds certain global parameters such as the resolution.
In most cases, you can use funcPangoCairo`.font_map_get_default]
instead.
Note that the type of the returned object will depend
on the particular font backend Cairo was compiled to use;
You generally should only use the PangoFontMap and
PangoCairoFontMap interfaces on the returned object.
You can override the type of backend returned by using an environment variable %PANGOCAIRO_BACKEND. Supported types, based on your build, are fc (fontconfig), win32, and coretext. If requested type is not available, NULL is returned. Ie. this is only useful for testing, when at least two backends are compiled in.
Adds the glyphs in glyphs to the current path in the specified
cairo context.
The origin of the glyphs (the left edge of the baseline) will be at the current point of the cairo context.
a Cairo context
a PangoFont from a PangoCairoFontMap
a PangoGlyphString
Adds the text in PangoLayoutLine to the current path in the
specified cairo context.
The origin of the glyphs (the left edge of the line) will be at the current point of the cairo context.
a Cairo context
a PangoLayoutLine
Draw a squiggly line in the specified cairo context that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.
The width of the underline is rounded to an integer number of up/down segments and the resulting rectangle is centered in the original rectangle.
a Cairo context
The X coordinate of one corner of the rectangle
The Y coordinate of one corner of the rectangle
Non-negative width of the rectangle
Non-negative height of the rectangle
Draws the glyphs in glyph_item in the specified cairo context,
embedding the text associated with the glyphs in the output if the
output format supports it (PDF for example), otherwise it acts
similar to [funcshow_glyph_string].
The origin of the glyphs (the left edge of the baseline) will be drawn at the current point of the cairo context.
Note that text is the start of the text for layout, which is then
indexed by glyph_item->item->offset.
a Cairo context
the UTF-8 text that glyph_item refers to
a PangoGlyphItem
Draws the glyphs in glyphs in the specified cairo context.
The origin of the glyphs (the left edge of the baseline) will be drawn at the current point of the cairo context.
a Cairo context
a PangoFont from a PangoCairoFontMap
a PangoGlyphString
Draws a PangoLayoutLine in the specified cairo context.
The origin of the glyphs (the left edge of the line) will be drawn at the current point of the cairo context.
a Cairo context
a PangoLayoutLine
Updates a PangoContext previously created for use with Cairo to
match the current transformation and target surface of a Cairo
context.
If any layouts have been created for the context, it's necessary
to call [methodPango.Layout.context_changed] on those layouts.
Retrieves any font rendering options previously set with [func
PangoCairo.context_set_font_options].This function does not report options that are derived from the target surface by [func
update_context].