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const GwyRGBA * | gwy_graph_get_preset_color () |
guint | gwy_graph_get_n_preset_colors () |
void | gwy_graph_draw_point () |
void | gwy_graph_draw_line () |
void | gwy_graph_draw_curve () |
void | gwy_graph_draw_selection_points () |
void | gwy_graph_draw_selection_areas () |
void | gwy_graph_draw_selection_lines () |
void | gwy_graph_draw_selection_xareas () |
void | gwy_graph_draw_selection_yareas () |
void | gwy_graph_draw_grid () |
const GwyRGBA *
gwy_graph_get_preset_color (guint i
);
Gets a preset graph colour.
Preset colours are a set of selected colours one can use to distingush graph curves when there is no reason to prefer a particular colour. Note that the preset colours are not guaranteed to never change (including their total number), although it happens rarely.
i |
Colour number, starting from 0 which is always black. It can be any number but colours start to repeat after
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guint
gwy_graph_get_n_preset_colors (void
);
Gets the number of distinct colors gwy_graph_get_preset_color()
can return.
void gwy_graph_draw_point (cairo_t *cr
,gdouble x
,gdouble y
,GwyGraphPointType type
,gdouble size
,const GwyRGBA *color
);
Draws a point on a drawable.
void gwy_graph_draw_line (cairo_t *cr
,gdouble x_from
,gdouble y_from
,gdouble x_to
,gdouble y_to
,GwyGraphLineStyle line_style
,gdouble line_width
,const GwyRGBA *color
);
Draws a line segment on a drawable.
void gwy_graph_draw_curve (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwyGraphCurveModel *gcmodel
);
Draws a single graph curve on a drawable.
void gwy_graph_draw_selection_points (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwySelectionPoint *selection
);
Draws selection points on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
selection |
A selection of type GwySelectionPoint. |
void gwy_graph_draw_selection_areas (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwySelectionRectangle *selection
);
Draws selected area on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
selection |
A selection of type GwySelectionRectangle. |
void gwy_graph_draw_selection_lines (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwySelectionAxis *selection
,GtkOrientation orientation
);
Draws selected lines on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
selection |
a GwySelectionAxis structure |
|
orientation |
horizontal or vertical orientation |
void gwy_graph_draw_selection_xareas (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwySelectionRange *selection
);
Draws selected x-area on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
selection |
A selection of type GwySelectionRange. |
void gwy_graph_draw_selection_yareas (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,GwySelectionRange *selection
);
Drawss selected y-area on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
selection |
A selection of type GwySelectionRange. |
void gwy_graph_draw_grid (cairo_t *cr
,GwyGraphActiveAreaSpecs *specs
,const gdouble *x_grid_data
,guint nxdata
,const gdouble *y_grid_data
,guint nydata
);
Draws an array of grid lines on a drawable.
cr |
Cairo context. |
|
specs |
Specifications (boundaries) of the active area of the graph. |
|
x_grid_data |
Array of grid data for the x-axis, it can be |
|
nxdata |
Number of x grid positions. |
|
y_grid_data |
Array of grid data for the y-axis, it can be |
|
nydata |
Number of y grid positions. |
typedef struct { GdkRectangle area; gdouble real_xmin; gdouble real_ymin; /* FIXME: This is weird for non-linear mapping. Just store the bloody endpoints! */ gdouble real_height; gdouble real_width; gboolean log_x; gboolean log_y; } GwyGraphActiveAreaSpecs;
Graph area specification (for graph drawing primitives).
GdkRectangle |
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Minimum x value in real units. |
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Minimum y value in real units. |
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Area height in real units. |
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Area width in real units. |
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