Go to the source code of this file.
Macros | |
| #define | PANGO_GRAVITY_IS_VERTICAL(gravity) ((gravity) == PANGO_GRAVITY_EAST || (gravity) == PANGO_GRAVITY_WEST) |
| #define | PANGO_GRAVITY_IS_IMPROPER(gravity) ((gravity) == PANGO_GRAVITY_WEST || (gravity) == PANGO_GRAVITY_NORTH) |
Enumerations | |
| enum | PangoGravity { PANGO_GRAVITY_SOUTH , PANGO_GRAVITY_EAST , PANGO_GRAVITY_NORTH , PANGO_GRAVITY_WEST , PANGO_GRAVITY_AUTO } |
| enum | PangoGravityHint { PANGO_GRAVITY_HINT_NATURAL , PANGO_GRAVITY_HINT_STRONG , PANGO_GRAVITY_HINT_LINE } |
Functions | |
| PANGO_AVAILABLE_IN_1_16 double | pango_gravity_to_rotation (PangoGravity gravity) G_GNUC_CONST |
| PANGO_AVAILABLE_IN_1_16 PangoGravity | pango_gravity_get_for_matrix (const PangoMatrix *matrix) G_GNUC_PURE |
| PANGO_AVAILABLE_IN_1_16 PangoGravity | pango_gravity_get_for_script (PangoScript script, PangoGravity base_gravity, PangoGravityHint hint) G_GNUC_CONST |
| PANGO_AVAILABLE_IN_1_26 PangoGravity | pango_gravity_get_for_script_and_width (PangoScript script, gboolean wide, PangoGravity base_gravity, PangoGravityHint hint) G_GNUC_CONST |
Macro Definition Documentation
◆ PANGO_GRAVITY_IS_IMPROPER
| #define PANGO_GRAVITY_IS_IMPROPER | ( | gravity | ) | ((gravity) == PANGO_GRAVITY_WEST || (gravity) == PANGO_GRAVITY_NORTH) |
PANGO_GRAVITY_IS_IMPROPER: @gravity: the PangoGravity to check
Whether a PangoGravity represents a gravity that results in reversal of text direction.
Returns: TRUE if @gravity is PANGO_GRAVITY_WEST or PANGO_GRAVITY_NORTH, FALSE otherwise.
Since: 1.32
Definition at line 113 of file pango-gravity.h.
◆ PANGO_GRAVITY_IS_VERTICAL
| #define PANGO_GRAVITY_IS_VERTICAL | ( | gravity | ) | ((gravity) == PANGO_GRAVITY_EAST || (gravity) == PANGO_GRAVITY_WEST) |
PANGO_GRAVITY_IS_VERTICAL: @gravity: the PangoGravity to check
Whether a PangoGravity represents vertical writing directions.
Returns: TRUE if @gravity is PANGO_GRAVITY_EAST or PANGO_GRAVITY_WEST, FALSE otherwise.
Since: 1.16
Definition at line 98 of file pango-gravity.h.
Enumeration Type Documentation
◆ PangoGravity
| enum PangoGravity |
PangoGravity: @PANGO_GRAVITY_SOUTH: Glyphs stand upright (default) 
@PANGO_GRAVITY_EAST: Glyphs are rotated 90 degrees counter-clockwise. 
@PANGO_GRAVITY_NORTH: Glyphs are upside-down. 
@PANGO_GRAVITY_WEST: Glyphs are rotated 90 degrees clockwise. 
@PANGO_GRAVITY_AUTO: Gravity is resolved from the context matrix
PangoGravity represents the orientation of glyphs in a segment of text.
This is useful when rendering vertical text layouts. In those situations, the layout is rotated using a non-identity [struc.nosp@m.t@Pa.nosp@m.ngo.M.nosp@m.atri.nosp@m.x], and then glyph orientation is controlled using PangoGravity.
Not every value in this enumeration makes sense for every usage of PangoGravity; for example, PANGO_GRAVITY_AUTO only can be passed to [metho.nosp@m.d@Pa.nosp@m.ngo.C.nosp@m.onte.nosp@m.xt.se.nosp@m.t_ba.nosp@m.se_gr.nosp@m.avit.nosp@m.y] and can only be returned by [metho.nosp@m.d@Pa.nosp@m.ngo.C.nosp@m.onte.nosp@m.xt.ge.nosp@m.t_ba.nosp@m.se_gr.nosp@m.avit.nosp@m.y].
See also: [enum@.nosp@m.Pang.nosp@m.o.Gra.nosp@m.vity.nosp@m.Hint]
Since: 1.16
| Enumerator | |
|---|---|
| PANGO_GRAVITY_SOUTH | |
| PANGO_GRAVITY_EAST | |
| PANGO_GRAVITY_NORTH | |
| PANGO_GRAVITY_WEST | |
| PANGO_GRAVITY_AUTO | |
Definition at line 53 of file pango-gravity.h.
◆ PangoGravityHint
| enum PangoGravityHint |
PangoGravityHint: @PANGO_GRAVITY_HINT_NATURAL: scripts will take their natural gravity based on the base gravity and the script. This is the default. @PANGO_GRAVITY_HINT_STRONG: always use the base gravity set, regardless of the script. @PANGO_GRAVITY_HINT_LINE: for scripts not in their natural direction (eg. Latin in East gravity), choose per-script gravity such that every script respects the line progression. This means, Latin and Arabic will take opposite gravities and both flow top-to-bottom for example.
PangoGravityHint defines how horizontal scripts should behave in a vertical context.
That is, English excerpts in a vertical paragraph for example.
See also [enum@.nosp@m.Pang.nosp@m.o.Gra.nosp@m.vity]
Since: 1.16
| Enumerator | |
|---|---|
| PANGO_GRAVITY_HINT_NATURAL | |
| PANGO_GRAVITY_HINT_STRONG | |
| PANGO_GRAVITY_HINT_LINE | |
Definition at line 81 of file pango-gravity.h.
Function Documentation
◆ pango_gravity_get_for_matrix()
| PANGO_AVAILABLE_IN_1_16 PangoGravity pango_gravity_get_for_matrix | ( | const PangoMatrix * | matrix | ) |
◆ pango_gravity_get_for_script()
| PANGO_AVAILABLE_IN_1_16 PangoGravity pango_gravity_get_for_script | ( | PangoScript | script, |
| PangoGravity | base_gravity, | ||
| PangoGravityHint | hint ) |
◆ pango_gravity_get_for_script_and_width()
| PANGO_AVAILABLE_IN_1_26 PangoGravity pango_gravity_get_for_script_and_width | ( | PangoScript | script, |
| gboolean | wide, | ||
| PangoGravity | base_gravity, | ||
| PangoGravityHint | hint ) |
◆ pango_gravity_to_rotation()
| PANGO_AVAILABLE_IN_1_16 double pango_gravity_to_rotation | ( | PangoGravity | gravity | ) |
