Name
GtkRuler -- Base class for horizontal or vertical rulers
Description
The GTKRuler widget is a base class for horizontal and vertical rulers. Rulers
are used to show the mouse pointer's location in a window. The ruler can either
be horizontal or vertical on the window. Within the ruler a small triangle
indicates the location of the mouse relative to the horixontal or vertical
ruler. See GtkHRuler to learn how to create a new horizontal ruler. See
GtkVRuler to learn how to create a new vertical ruler.
Details
struct GtkRuler
All distances are in 1/72nd's of an inch. (According to Adobe thats a point, but
points are really 1/72.27 in.)
struct GtkRulerMetric
struct GtkRulerMetric
{
gchar *metric_name;
gchar *abbrev;
/* This should be points_per_unit. This is the size of the unit
* in 1/72nd's of an inch and has nothing to do with screen pixels */
gfloat pixels_per_unit;
gfloat ruler_scale[10];
gint subdivide[5]; /* five possible modes of subdivision */
}; |
This should be points_per_unit. This is the size of the unit in 1/72nd's of an inch and has nothing to do with screen pixels.
gtk_ruler_set_metric ()
This calls the GTKMetricType to set the ruler to units defined. Available units
are GTK_PIXELS, GTK_INCHES, or GTK_CENTIMETERS. The default unit of measurement
is GTK_PIXELS.
gtk_ruler_set_range ()
This sets the range of the ruler using gfloat lower, gfloat upper, gfloat position, and gfloat max_size.