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## Name

### Gtkplotcanvas - gtkplot canvas widget

## Synopsis

    GtkType

    gtk_plot_canvas_get_type

    (void);

    GtkType

    gtk_plot_canvas_child_get_type

    (void);

    GtkWidget*

    gtk_plot_canvas_new

    (gint width, gint height,
    gdouble magnification);

    void

    gtk_plot_canvas_construct

    (GtkPlotCanvas *canvas,
    gint width, gint height,
    gdouble magnification);

    void

    gtk_plot_canvas_set_pc

    (GtkPlotCanvas *canvas,
    GtkPlotPC *pc);

    void

    gtk_plot_canvas_paint

    (GtkPlotCanvas *canvas);

    void

    gtk_plot_canvas_refresh

    (GtkPlotCanvas *canvas);

    void

    gtk_plot_canvas_freeze

    (GtkPlotCanvas *canvas);

    void

    gtk_plot_canvas_thaw

    (GtkPlotCanvas *canvas);

    void

    gtk_plot_canvas_grid_set_visible

    (GtkPlotCanvas *canvas,
    gboolean visible);

    void

    gtk_plot_canvas_grid_set_step

    (GtkPlotCanvas *canvas,
    gdouble step);

    void

    gtk_plot_canvas_grid_set_attributes

    (GtkPlotCanvas *canvas,
    GtkPlotLineStyle style,
    gint width,
    const GdkColor *color);

    void

    gtk_plot_canvas_add_plot

    (GtkPlotCanvas *plot_canvas,
    GtkPlot *plot,
    gdouble x, gdouble y);

    void

    gtk_plot_canvas_set_active_plot

    (GtkPlotCanvas *plot_canvas,
    GtkPlot *plot);

    void

    gtk_plot_canvas_cancel_action

    (GtkPlotCanvas *plot_canvas);

    void

    gtk_plot_canvas_unselect

    (GtkPlotCanvas *plot_canvas);

    GtkPlot *

    gtk_plot_canvas_get_active_plot

    (GtkPlotCanvas *canvas);

    GtkPlotData *

    gtk_plot_canvas_get_active_data

    (GtkPlotCanvas *canvas);

    gint

    gtk_plot_canvas_get_active_point

    (GtkPlotCanvas *canvas,
    gdouble *x, gdouble *y);

    GtkPlotCanvasChild *

    gtk_plot_canvas_get_active_item

    (GtkPlotCanvas *canvas);

    void

    gtk_plot_canvas_set_size

    (GtkPlotCanvas *canvas,
    gint width, gint height);

    void

    gtk_plot_canvas_set_magnification

    (GtkPlotCanvas *canvas,
    gdouble magnification);

    void

    gtk_plot_canvas_set_background

    (GtkPlotCanvas *canvas,
    const GdkColor *background);

    void

    gtk_plot_canvas_get_pixel

    (GtkPlotCanvas *plot_canvas,
    gdouble px, gdouble py,
    gint *x, gint *y);

    void

    gtk_plot_canvas_get_position

    (GtkPlotCanvas *plot_canvas,
    gint x, gint y,
    gdouble *px, gdouble *py);

    GtkPlotCanvasChild *

    gtk_plot_canvas_put_text

    (GtkPlotCanvas *canvas,
    gdouble x,
    gdouble y,
    const gchar *font,
    gint height,
    gint angle,
    const GdkColor *fg,
    const GdkColor *bg,
    gboolean transparent,
    GtkJustification justification, const gchar *text);

    gboolean

    gtk_plot_canvas_remove_child

    (GtkPlotCanvas *canvas,
    GtkPlotCanvasChild *child);

    GtkPlotCanvasChild *

    gtk_plot_canvas_put_line

    (GtkPlotCanvas *canvas,
    gdouble x1, gdouble y1,
    gdouble x2, gdouble y2,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *color,
    GtkPlotCanvasArrow arrow_mask);

    GtkPlotCanvasChild *

    gtk_plot_canvas_put_rectangle

    (GtkPlotCanvas *canvas,
    gdouble x1, gdouble y1,
    gdouble x2, gdouble y2,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *fg,
    const GdkColor *bg,
    GtkPlotBorderStyle border,
    gboolean fill);

    GtkPlotCanvasChild *

    gtk_plot_canvas_put_ellipse

    (GtkPlotCanvas *canvas,
    gdouble x1, gdouble y1,
    gdouble x2, gdouble y2,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *fg,
    const GdkColor *bg,
    gboolean fill);

    GtkPlotCanvasChild *

    gtk_plot_canvas_put_pixmap

    (GtkPlotCanvas *canvas,
    GdkPixmap *pixmap,
    gdouble x1, gdouble y1);

    void

    gtk_plot_canvas_line_set_attributes

    (GtkPlotCanvasChild *child,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *color,
    GtkPlotCanvasArrow mask);

    void

    gtk_plot_canvas_rectangle_set_attributes

    (GtkPlotCanvasChild *child,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *fg,
    const GdkColor *bg,
    GtkPlotBorderStyle border,
    gboolean fill);

    void

    gtk_plot_canvas_ellipse_set_attributes

    (GtkPlotCanvasChild *child,
    GtkPlotLineStyle style,
    gfloat width,
    const GdkColor *fg,
    const GdkColor *bg,
    gboolean fill);

    GtkPlotCanvasChild *

    gtk_plot_canvas_child_new

    (GtkPlotCanvasType type);

    void

    gtk_plot_canvas_put_child

    (GtkPlotCanvas *canvas,
    GtkPlotCanvasChild *child,
    gdouble x1, gdouble y1,
    gdouble x2, gdouble y2);

    void

    gtk_plot_canvas_child_move

    (GtkPlotCanvas *canvas,
    GtkPlotCanvasChild *child,
    gdouble x1, gdouble y1);

    void

    gtk_plot_canvas_child_move_resize

    (GtkPlotCanvas *canvas,
    GtkPlotCanvasChild *child,
    gdouble x1, gdouble y1,
    gdouble x2, gdouble y2);

    void

    gtk_plot_canvas_child_set_selection

    (GtkPlotCanvasChild *child,
    GtkPlotCanvasSelection selection);

    void

    gtk_plot_canvas_child_set_selection_mode

    (GtkPlotCanvasChild *child,
    GtkPlotCanvasSelectionMode mode);

## Object Hierarchy

##
Args

## Signal Prototypes

    "select_item" signal;
    "move_item" signal;
    "resize_item" signal;
    "delete_item" signal;
    "select_region" signal;
    "changed" signal;

## Description

#### GtkPlotCanvas is a GtkFixed subclass and allows to DnD plots, points, and child objects (text, axis titles).
You can move them or resize your plots dragging with the mouse!

##
Details

    struct GtkPlotCanvas;
    struct GtkPlotCanvasChild;
    struct GtkPlotCanvasLine;
    struct GtkPlotCanvasRectangle;
    struct GtkPlotCanvasEllipse;

##
Screenshot

### gtk_plot_canvas_get_type ()

    GtkType gtk_plot_canvas_get_type (void);

Returns |

### gtk_plot_canvas_child_get_type ()

    GtkType gtk_plot_canvas_child_get_type (void);

Returns |

##

### gtk_plot_canvas_new ()

    GtkWidget* gtk_plot_canvas_new (gint width, gint height,
                                    gdouble magnification);

Create a new GtkPlotCanvas widget.

width,height | width , height of the new canvas
magnification | magnification of the canvas
Returns | the canvas widget

### gtk_plot_canvas_construct ()

    void gtk_plot_canvas_construct (GtkPlotCanvas *canvas,
                                    gint width, gint height,
                                    gdouble magnification);

Initialize a GtkPlotCanvas structure with the given arguments.

canvas | a GtkPlotCanvas widget
width,height | width,height of the canvas widget
magnification | magnification of the canvas widget

### gtk_plot_canvas_set_pc ()

    void gtk_plot_canvas_set_pc (GtkPlotCanvas *canvas,
                                GtkPlotPC *pc);

Set the printing context for the respective canvas widget

canvas | a GtkPlotCanvas widget
pc | printing context

### gtk_plot_canvas_paint ()

    void gtk_plot_canvas_paint (GtkPlotCanvas *canvas);

Paint the canvas(update the changes)

canvas | a GtkPlotCanvas widget

### gtk_plot_canvas_refresh ()

    void gtk_plot_canvas_refresh (GtkPlotCanvas *canvas);

Refresh the canvas

canvas | a GtkPlotCanvas widget

### gtk_plot_canvas_freeze ()

    void gtk_plot_canvas_freeze (GtkPlotCanvas *canvas);

Freeze the canvas(no more drawing on it)

canvas | a GtkPlotCanvas widget

### gtk_plot_canvas_thaw ()

    void gtk_plot_canvas_thaw (GtkPlotCanvas *canvas);

Thaw(unfreeze) the widget

canvas | a GtkPlotCanvas widget

### gtk_plot_canvas_grid_set_visible ()

    void gtk_plot_canvas_grid_set_visible(GtkPlotCanvas *canvas,
                                          gboolean visible);

Set the visibility of the canvas grid,

canvas | a GtkPlotCanvas widget
visible | TRUE or FALSE

### gtk_plot_canvas_grid_set_step ()

    void gtk_plot_canvas_grid_set_step (GtkPlotCanvas *canvas,
                                        gdouble step);

Set the step of the canvas grid

canvas | a GtkPlotCanvas widget
step | step of the grid

### gtk_plot_canvas_grid_set_attributes ()

    void gtk_plot_canvas_grid_set_attributes(GtkPlotCanvas *canvas,
                                             GtkPlotLineStyle style,
                                             gint width,
                                             const GdkColor *color);

Set the attributes of the canvas grid

canvas | a GtkPlotCanvas widget
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | width of the grid line
color | color of the grid line

### gtk_plot_canvas_add_plot ()

    void gtk_plot_canvas_add_plot (GtkPlotCanvas *plot_canvas,
                                   GtkPlot *plot,
                                   gdouble x, gdouble y);

Add a plot to the canvas

plot_canvas | a GtkPlotCanvas widget
plot | plot to be added
x,y | the coordinates of the plot

### gtk_plot_canvas_set_active_plot ()

    void gtk_plot_canvas_set_active_plot (GtkPlotCanvas *plot_canvas,
                                          GtkPlot *plot);

Set the active(current) plot.

plot_canvas | a GtkPlotCanvas widget
plot | a GtkPlot widget

### gtk_plot_canvas_cancel_action ()

    void gtk_plot_canvas_cancel_action (GtkPlotCanvas *plot_canvas);

plot_canvas |

### gtk_plot_canvas_unselect ()

    void gtk_plot_canvas_unselect (GtkPlotCanvas *plot_canvas);

Unselect the current plot in the canvas.

plot_canvas | a GtkPlotCanvas widget

### gtk_plot_canvas_get_active_plot ()

    GtkPlot * gtk_plot_canvas_get_active_plot (GtkPlotCanvas *canvas);

Get the active plot in the canvas

canvas | a GtkPlotCanvas widget
Return | a GtkPlot widget

### gtk_plot_canvas_get_active_data ()

    GtkPlotData * gtk_plot_canvas_get_active_data (GtkPlotCanvas *canvas);

canvas |
Return |

### gtk_plot_canvas_get_active_point ()

    gint gtk_plot_canvas_get_active_point (GtkPlotCanvas *canvas,
                                           gdouble *x, gdouble *y);

canvas |
x,y |
Return |

### gtk_plot_canvas_get_active_item ()

    GtkPlotCanvasChild * gtk_plot_canvas_get_active_item (GtkPlotCanvas *canvas);

canvas |
Return |

### gtk_plot_canvas_set_size ()

    void gtk_plot_canvas_set_size (GtkPlotCanvas *canvas,
                                   gint width, gint height);

Set the size of the canvas

canvas | a GtkPlotCanvas widget
width,height | width,height of the canvas

### gtk_plot_canvas_set_magnification ()

    void gtk_plot_canvas_set_magnification (GtkPlotCanvas *canvas,
                                            gdouble magnification);

Set the magnification factor of the standard.

canvas | a GtkPlotCanvas widget
magnification | magnification factor

### gtk_plot_canvas_set_background ()

    void gtk_plot_canvas_set_background (GtkPlotCanvas *canvas,
                                         const GdkColor *background);

Set the background color of the canvas

canvas | a GtkPlotCanvas widget
background | background color of the canvas

### gtk_plot_canvas_get_pixel ()

    void gtk_plot_canvas_get_pixel (GtkPlotCanvas *plot_canvas,
                                    gdouble px, gdouble py,
                                    gint *x, gint *y);

plot_canvas |
px,py |
x,y |

### gtk_plot_canvas_get_position ()

    void gtk_plot_canvas_get_position (GtkPlotCanvas *plot_canvas,
                                       gint x, gint y,
                                       gdouble *px, gdouble *py);

plot_canvas |
x,y |
px,py |

### gtk_plot_canvas_put_text ()

    GtkPlotCanvasChild *  gtk_plot_canvas_put_text (GtkPlotCanvas *canvas,
                                                    gdouble x,
                                                    gdouble y,
                                                    const gchar *font,
                                                    gint height,
                                                    gint angle,
                                                    const GdkColor *fg,
                                                    const GdkColor *bg,
                                                    gboolean transparent,
                                                    GtkJustification justification,
                                                    const gchar *text);

Insert text in the canvas

canvas | a GtkPlotCanvas widget
x,y | coordinates where text is inserted
font | text font
height | font height
angle | font angle
fg,bg | foregound(text),background color
transparent | TRUE otr FALSE
justification | GTK_JUSTIFY_LEFT, RIGHT, CENTER
text | text string

### gtk_plot_canvas_remove_child ()

    gboolean gtk_plot_canvas_remove_child (GtkPlotCanvas *canvas,
                                           GtkPlotCanvasChild *child);

Remove a child widget from canvas

canvas | a GtkPlotCanvas widget
child | a GtkPlotCanvas child widget
Return | TRUE or FALSE

### gtk_plot_canvas_put_line ()

    GtkPlotCanvasChild * gtk_plot_canvas_put_line (GtkPlotCanvas *canvas,
                                                   gdouble x1, gdouble y1,
                                                   gdouble x2, gdouble y2,
                                                   GtkPlotLineStyle style,
                                                   gfloat width,
                                                   const GdkColor *color,
                                                   GtkPlotCanvasArrow arrow_mask);

Draw a line in the canvas.

canvas | a GtkPlotCanvas widget
x1,y1 | initial point
x2,y2 | final point
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | width of the line
color | color of the line
arrow_mask | GTK_PLOT_ARROW_NONE GTK_PLOT_ARROW_ORIGIN GTK_PLOT_ARROW_END

### gtk_plot_canvas_put_rectangle ()

    GtkPlotCanvasChild * gtk_plot_canvas_put_rectangle (GtkPlotCanvas *canvas,
                                                        gdouble x1, gdouble y1,
                                                        gdouble x2, gdouble y2,
                                                        GtkPlotLineStyle style,
                                                        gfloat width,
                                                        const GdkColor *fg,
                                                        const GdkColor *bg,
                                                        GtkPlotBorderStyle border,
                                                        gboolean fill);

Insert a rectangle in canvas

canvas | a GtkPlotCanvas widget
x1,y1 | up-left point
x2,y2 | right-bottom point
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | width of the rectangle line
border | GTK_PLOT_BORDER_NONE , GTK_PLOT_BORDER_LINE , GTK_PLOT_BORDER_SHADOW ,
fill | TRUE or FALSE
fg,bg | foreground,backfround color of the rectangle

### gtk_plot_canvas_put_ellipse ()

    GtkPlotCanvasChild * gtk_plot_canvas_put_ellipse (GtkPlotCanvas *canvas,
                                                      gdouble x1, gdouble y1,
                                                      gdouble x2, gdouble y2,
                                                      GtkPlotLineStyle style,
                                                      gfloat width,
                                                      const GdkColor *fg,
                                                      const GdkColor *bg,
                                                      gboolean fill);

Insert an ellipse in the canvas

canvas | a GtkPlotCanvas widget
x1,y1 | Initial point
x2,y2 | final point
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | width of the ellipse line
fg,bg | foreground,background color of the ellipse
fill | TRUE or FALSE

### gtk_plot_canvas_put_pixmap ()

    GtkPlotCanvasChild * gtk_plot_canvas_put_pixmap (GtkPlotCanvas *canvas,
                                                     GdkPixmap *pixmap,
                                                     gdouble x1, gdouble y1);

Insert a pixmap in the canvas

canvas | a GtkPlotCanvas widget
pixmap | pixmap widget
x1,y1 | corrdinates of insertion

### gtk_plot_canvas_line_set_attributes ()

    void gtk_plot_canvas_line_set_attributes (GtkPlotCanvasChild *child,
                                              GtkPlotLineStyle style,
                                              gfloat width,
                                              const GdkColor *color,
                                              GtkPlotCanvasArrow mask);

Set the attributes of the lines inserted in the canvas

canvas | a GtkPlotCanvasChild widget
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | line width
color | line color
mask | GTK_PLOT_ARROW_NONE GTK_PLOT_ARROW_ORIGIN GTK_PLOT_ARROW_END

### gtk_plot_canvas_rectangle_set_attributes ()

    void gtk_plot_canvas_rectangle_set_attributes (GtkPlotCanvasChild *child,
                                                   GtkPlotLineStyle style,
                                                   gfloat width,
                                                   const GdkColor *fg,
                                                   const GdkColor *bg,
                                                   GtkPlotBorderStyle border,
                                                   gboolean fill);

Set the attributes of the rectangles inserted in the canvas

child | a GtkPlotCanvasChild widget
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | rectangle line width
fg,bg | foreground,background color of the rectangle
border | GTK_PLOT_BORDER_NONE , GTK_PLOT_BORDER_LINE , GTK_PLOT_BORDER_SHADOW ,
fill | TRUE or FALSE

### gtk_plot_canvas_ellipse_set_attributes ()

    void gtk_plot_canvas_ellipse_set_attributes (GtkPlotCanvasChild *child,
                                                 GtkPlotLineStyle style,
                                                 gfloat width,
                                                 const GdkColor *fg,
                                                 const GdkColor *bg,
                                                 gboolean fill);

Set the attributes of the ellipses inserted in the canvas

child | a GtkPlotCanvasChild widget
style | GTK_PLOT_LINE_NONE , GTK_PLOT_LINE_SOLID , GTK_PLOT_LINE_DOTTED , GTK_PLOT_LINE_DASHED , GTK_PLOT_LINE_DOT_DASH , GTK_PLOT_LINE_DOT_DOT_DASH , GTK_PLOT_LINE_DOT_DASH_DASH
width | ellipse "line" width
fg,bg | foreground,background color of the ellipse
fill | TRUE or FALSE

### gtk_plot_canvas_child_new ()

    GtkPlotCanvasChild * gtk_plot_canvas_child_new (GtkPlotCanvasType type);

type |
Return |

### gtk_plot_canvas_put_child ()

    void gtk_plot_canvas_put_child (GtkPlotCanvas *canvas,
                                    GtkPlotCanvasChild *child,
                                    gdouble x1, gdouble y1,
                                    gdouble x2, gdouble y2);

canvas |
child |
x1,y1 |
x2,y2 |

### gtk_plot_canvas_child_move ()

    void gtk_plot_canvas_child_move (GtkPlotCanvas *canvas,
                                     GtkPlotCanvasChild *child,
                                     gdouble x1, gdouble y1);

canvas |
child |
x1,y1 |

### gtk_plot_canvas_child_move_resize ()

    void gtk_plot_canvas_child_move_resize (GtkPlotCanvas *canvas,
                                            GtkPlotCanvasChild *child,
                                            gdouble x1, gdouble y1,
                                            gdouble x2, gdouble y2);

canvas |
child |
x1,y1 |
x2,y2 |

### gtk_plot_canvas_child_set_selection ()

    void gtk_plot_canvas_child_set_selection (GtkPlotCanvasChild  *child,
                                              GtkPlotCanvasSelection selection);

child |
selection |

### gtk_plot_canvas_child_set_selection_mode ()

    void gtk_plot_canvas_child_set_selection_mode (GtkPlotCanvasChild *child,
                                                   GtkPlotCanvasSelectionMode mode);

child |
mode |

## Signals

### The "select_item" signal

    gboolean (*select_item) (GtkPlotCanvas *canvas,
                             GdkEventButton *event,
                             GtkPlotCanvasChild *item);

`canvas` |
`event` |
item |

###
The "move_item" signal

    gboolean (*move_item) (GtkPlotCanvas *canvas,
                           GtkPlotCanvasChild *item,
                           gdouble new_x, gdouble new_y);

`canvas` |
`item` |
new_x,new_y |

###
The "resize_item" signal

    gboolean (*resize_item) (GtkPlotCanvas *canvas,
                             GtkPlotCanvasChild *item,
                             gdouble new_width, gdouble new_height);

`canvas` |
`item` |
new_width,new_height |

###
The "delete_item" signal

    gboolean (*delete_item) (GtkPlotCanvas *canvas,
                            GtkPlotCanvasChild *item);

`canvas` |
`item` |

###
The "select_region" signal

    void (*select_region) (GtkPlotCanvas *canvas,
                           gdouble xmin, gdouble ymin,
                           gdouble xmax, gdouble ymax);

`canvas` |
`xmin,ymin` |
xmax,ymax |

### The "changed" signal

    void (*changed) (GtkPlotCanvas *canvas);

`canvas` |

## DETAILS

    struct _GtkPlotCanvas

    {
      GtkFixed fixed;
      guint16 flags;
      guint state;
      guint freeze_count;
      gint pixmap_width, pixmap_height;
      gint width, height;
      gdouble magnification;

      gboolean show_grid;
      gdouble grid_step;
      GtkPlotLine grid;
      GtkPlotCanvasAction action;
      GdkPixmap *pixmap;
      GdkColor background;
      GtkPlot *active_plot;
      GtkPlotData *active_data;
      gint active_point;
      gint active_lpoint, active_rpoint;
      gdouble active_x, active_y;
      GtkPlotCanvasChild active_item;
      GtkPlotCanvasPos drag_point;
      gint drag_x, drag_y;
      gint pointer_x, pointer_y;
      GdkRectangle drag_area;
      GList *plots;
      GList *childs;
      gint num_plots;
      GdkCursor *cursor;
      GtkPlotPC *pc;
    }

    struct _GtkPlotCanvasChild

     {
      gdouble rx1, rx2, ry1, ry2;
      gint min_width, min_height;
      GdkRectangle allocation;
      guint state;
      GtkPlotCanvasType type;
      GtkPlotCanvasFlag flags;
      GtkPlotCanvasSelection selection;
      GtkPlotCanvasSelectionMode mode;
      gpointer data;
      void (*draw_child) (GtkPlotCanvas *canvas, GtkPlotCanvasChild *child);
    };

    struct _GtkPlotCanvasLine

    {
    GtkPlotLine line;
    GtkPlotCanvasArrow arrow_mask;
    gint arrow_length;
    gint arrow_width;
    GtkPlotSymbolStyle arrow_style;
    };

    struct _GtkPlotCanvasRectangle

    {
    GtkPlotLine line;
    gboolean filled;
    GtkPlotBorderStyle border;
    gint shadow_width;
    GdkColor bg;
    };

    struct _GtkPlotCanvasEllipse

    {
    GtkPlotLine line;
    gboolean filled;
    GdkColor bg;
    };

##

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