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Properties
| gdouble | arrow-length | Read / Write |
| gdouble | arrow-tip-length | Read / Write |
| gdouble | arrow-width | Read / Write |
| gboolean | close-path | Read / Write |
| gboolean | end-arrow | Read / Write |
| gdouble | height | Read / Write |
| GooCanvasPoints * | points | Read / Write |
| gboolean | start-arrow | Read / Write |
| gdouble | width | Read / Write |
| gdouble | x | Read / Write |
| gdouble | y | Read / Write |
Description
GooCanvasPolyline represents a polyline item, which is a series of one or more lines, with optional arrows at either end.
It is a subclass of GooCanvasItemSimple and so inherits all of the style properties such as "stroke-color", "fill-color" and "line-width".
It also implements the GooCanvasItem interface, so you can use the
GooCanvasItem functions such as goo_canvas_item_raise() and
goo_canvas_item_rotate().
To create a GooCanvasPolyline use goo_canvas_polyline_new(), or
goo_canvas_polyline_new_line() for a simple line between two points.
To get or set the properties of an existing GooCanvasPolyline, use
g_object_get() and g_object_set().
Functions
goo_canvas_polyline_new ()
GooCanvasItem * goo_canvas_polyline_new (GooCanvasItem *parent,gboolean close_path,gint num_points,...);
Creates a new polyline item.
Here's an example showing how to create a filled triangle with vertices at (100,100), (300,100), and (200,300).
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GooCanvasItem *polyline = goo_canvas_polyline_new (mygroup, TRUE, 3, 100.0, 100.0, 300.0, 100.0, 200.0, 300.0, "stroke-color", "red", "line-width", 5.0, "fill-color", "blue", NULL); |
Parameters
parent |
the parent item, or |
[skip] |
close_path |
if the last point should be connected to the first. |
|
num_points |
the number of points in the polyline. |
|
... |
the pairs of coordinates for each point in the line, followed by
optional pairs of property names and values, and a terminating |
goo_canvas_polyline_new_line ()
GooCanvasItem * goo_canvas_polyline_new_line (GooCanvasItem *parent,gdouble x1,gdouble y1,gdouble x2,gdouble y2,...);
Creates a new polyline item with a single line.
Here's an example showing how to create a line from (100,100) to (300,300).
1 2 3 4 5 6 |
GooCanvasItem *polyline = goo_canvas_polyline_new_line (mygroup, 100.0, 100.0, 300.0, 300.0, "stroke-color", "red", "line-width", 5.0, NULL); |
Types and Values
struct GooCanvasPolyline
struct GooCanvasPolyline;
The GooCanvasPolyline struct contains private data only.
Property Details
The “arrow-length” property
“arrow-length” gdouble
The length of the arrows, as a multiple of the line width.
Flags: Read / Write
Allowed values: >= 0
Default value: 5
The “arrow-tip-length” property
“arrow-tip-length” gdouble
The length of the arrow tip, as a multiple of the line width.
Flags: Read / Write
Allowed values: >= 0
Default value: 4
The “arrow-width” property
“arrow-width” gdouble
The width of the arrows, as a multiple of the line width.
Flags: Read / Write
Allowed values: >= 0
Default value: 4
The “close-path” property
“close-path” gboolean
If the last point should be connected to the first.
Flags: Read / Write
Default value: FALSE
The “end-arrow” property
“end-arrow” gboolean
If an arrow should be displayed at the end of the polyline.
Flags: Read / Write
Default value: FALSE
The “height” property
“height” gdouble
The height of the polyline.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “start-arrow” property
“start-arrow” gboolean
If an arrow should be displayed at the start of the polyline.
Flags: Read / Write
Default value: FALSE
The “width” property
“width” gdouble
The width of the polyline.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
The “x” property
“x” gdouble
The x coordinate of the left-most point of the polyline.
Flags: Read / Write
Default value: 0
The “y” property
“y” gdouble
The y coordinate of the top-most point of the polyline.
Flags: Read / Write
Default value: 0