Provided by: libgoo-canvas-perl_0.06-1build3_amd64 bug

NAME

       Goo::Canvas - wrapper for GooCanvas

HIERARCHY

         Glib::Object
         +----Glib::InitiallyUnowned
              +----Gtk2::Object
                   +----Gtk2::Widget
                        +----Gtk2::Container
                             +----Goo::Canvas

INTERFACES

         Glib::Object::_Unregistered::AtkImplementorIface
         Gtk2::Buildable

SYNOPSIS

           use Goo::Canvas;
           use Gtk2 '-init';
           use Glib qw(TRUE FALSE);

           my $window = Gtk2::Window->new('toplevel');
           $window->signal_connect('delete_event' => sub { Gtk2->main_quit; });
           $window->set_default_size(640, 600);

           my $swin = Gtk2::ScrolledWindow->new;
           $swin->set_shadow_type('in');
           $window->add($swin);

           my $canvas = Goo::Canvas->new();
           $canvas->set_size_request(600, 450);
           $canvas->set_bounds(0, 0, 1000, 1000);
           $swin->add($canvas);

           my $root = $canvas->get_root_item();
           my $rect = Goo::Canvas::Rect->new(
               $root, 100, 100, 400, 400,
               'line-width' => 10,
               'radius-x' => 20,
               'radius-y' => 10,
               'stroke-color' => 'yellow',
               'fill-color' => 'red'
           );
           $rect->signal_connect('button-press-event',
                                 \&on_rect_button_press);

           my $text = Goo::Canvas::Text->new(
               $root, "Hello World", 300, 300, -1, 'center',
               'font' => 'Sans 24',
           );
           $text->rotate(45, 300, 300);
           $window->show_all();
           Gtk2->main;

           sub on_rect_button_press {
               print "Rect item pressed!\n";
               return TRUE;
           }

DESCRIPTION

       GTK+ doesn't has an built-in canvas widget. GooCanvas is wonderful.  It is easy to use and
       has powerful and extensible methods to create items in canvas. Just try it.

       For more documents, please read GooCanvas Manual and the demo programs provided in the
       source distribution in both perl-Goo::Canvas and GooCanvas.

METHODS

   widget = Goo::Canvas->new
   list = $canvas->get_bounds
   $canvas->set_bounds ($left, $top, $right, $bottom)
       •   $left (double)

       •   $top (double)

       •   $right (double)

       •   $bottom (double)

   cairo_surface_t = $pixbuf->cairo_surface_from_pixbuf
   $canvas->convert_from_item_space ($item, $x, $y)
       •   $item (Goo::Canvas::Item)

       •   $x (double)

       •   $y (double)

   $canvas->convert_from_pixels ($x, $y)
       •   $x (double)

       •   $y (double)

   $canvas->convert_to_item_space ($item, $x, $y)
       •   $item (Goo::Canvas::Item)

       •   $x (double)

       •   $y (double)

   $canvas->convert_to_pixels ($x, $y)
       •   $x (double)

       •   $y (double)

   item = $canvas->create_item ($model)
       •   $model (Goo::Canvas::ItemModel)

   $commands->create_path ($cr)
       •   $cr (cairo_t)

   double = $canvas->get_default_line_width
   $canvas->grab_focus ($item)
       •   $item (Goo::Canvas::Item)

   item = $canvas->get_item_at ($x, $y, $is_pointer_event)
       •   $x (double)

       •   $y (double)

       •   $is_pointer_event (boolean)

   item = $canvas->get_item ($model)
       •   $model (Goo::Canvas::ItemModel)

   arrayref = $canvas->get_items_at ($x, $y, $is_pointer_event)
       •   $x (double)

       •   $y (double)

       •   $is_pointer_event (boolean)

   arrayref = $canvas->get_items_in_area ($area, $inside_area, $allow_overlaps,
       $include_containers)
       •   $area (GooCanvasBounds)

       •   $inside_area (boolean)

       •   $allow_overlaps (boolean)

       •   $include_containers (boolean)

   grabstatus = $canvas->keyboard_grab ($item, $owner_events, $time)
       •   $item (Goo::Canvas::Item)

       •   $owner_events (boolean)

       •   $time (unsigned)

   $canvas->keyboard_ungrab ($item, $time)
       •   $item (Goo::Canvas::Item)

       •   $time (unsigned)

   GArray = $path_data->parse_path_data
   grabstatus = $canvas->pointer_grab ($item, $event_mask, $cursor, $time)
       •   $item (Goo::Canvas::Item)

       •   $event_mask (Gtk2::Gdk::EventMask)

       •   $cursor (Gtk2::Gdk::Cursor) the cursor to display during the grab, or undef means no
           change

       •   $time (unsigned)

   $canvas->pointer_ungrab ($item, $time)
       •   $item (Goo::Canvas::Item)

       •   $time (unsigned)

   $canvas->register_widget_item ($witem)
       •   $witem (Goo::Canvas::Widget)

   $canvas->render ($cr, $bounds, $scale)
       •   $cr (cairo_t)

       •   $bounds (GooCanvasBounds)

       •   $scale (double)

   $canvas->request_redraw ($bounds)
       •   $bounds (GooCanvasBounds)

   $canvas->request_update
   item = $canvas->get_root_item
   itemmodel = $canvas->get_root_item_model
   $canvas->set_root_item_model ($model)
       •   $model (Goo::Canvas::ItemModel)

   $canvas->set_root_item ($item)
       •   $item (Goo::Canvas::Item)

   double = $canvas->get_scale
   $canvas->set_scale ($scale)
       •   $scale (double)

   $canvas->scroll_to ($left, $top)
       •   $left (double)

       •   $top (double)

   $canvas->unregister_item ($model)
       •   $model (Goo::Canvas::ItemModel)

   $canvas->unregister_widget_item ($witem)
       •   $witem (Goo::Canvas::Widget)

   $canvas->update

PROPERTIES

       'anchor' (Gtk2::AnchorType : default "north-west" : readable / writable)
           Where to place the canvas when it is smaller than the widget's allocated area

       'automatic-bounds' (boolean : default false : readable / writable)
           If the bounds are automatically calculated based on the bounds of all the items in the
           canvas

       'background-color' (string : default undef : writable)
           The color to use for the canvas background

       'background-color-rgb' (Glib::UInt : default 0 : writable)
           The color to use for the canvas background, specified as a 24-bit integer value,
           0xRRGGBB

       'bounds-from-origin' (boolean : default true : readable / writable)
           If the automatic bounds are calculated from the origin

       'bounds-padding' (double : default 0 : readable / writable)
           The padding added to the automatic bounds

       'clear-background' (boolean : default true : readable / writable)
           If the background is cleared before the canvas is painted

       'integer-layout' (boolean : default false : readable / writable)
           If all item layout is done to the nearest integer

       'redraw-when-scrolled' (boolean : default false : readable / writable)
           If the canvas is completely redrawn when scrolled, to reduce the flicker of static
           items

       'resolution-x' (double : default 96 : readable / writable)
           The horizontal resolution of the display, in dots per inch

       'resolution-y' (double : default 96 : readable / writable)
           The vertical resolution of the display, in dots per inch

       'scale' (double : default 1 : readable / writable)
           The magnification factor of the canvas

       'scale-x' (double : default 1 : readable / writable)
           The horizontal magnification factor of the canvas

       'scale-y' (double : default 1 : readable / writable)
           The vertical magnification factor of the canvas

       'units' (Gtk2::Unit : default "pixel" : readable / writable)
           The units to use for the canvas

       'x1' (double : default 0 : readable / writable)
           The x coordinate of the left edge of the canvas bounds, in canvas units

       'x2' (double : default 1000 : readable / writable)
           The x coordinate of the right edge of the canvas bounds, in canvas units

       'y1' (double : default 0 : readable / writable)
           The y coordinate of the top edge of the canvas bounds, in canvas units

       'y2' (double : default 1000 : readable / writable)
           The y coordinate of the bottom edge of the canvas bounds, in canvas units

SIGNALS

       set-scroll-adjustments (Goo::Canvas, Gtk2::Adjustment, Gtk2::Adjustment)
       item-created (Goo::Canvas, Goo::Canvas::Item, Goo::Canvas::ItemModel)

ENUMS AND FLAGS

   enum Gtk2::AnchorType
       •   'center' / 'GTK_ANCHOR_CENTER'

       •   'north' / 'GTK_ANCHOR_NORTH'

       •   'north-west' / 'GTK_ANCHOR_NORTH_WEST'

       •   'north-east' / 'GTK_ANCHOR_NORTH_EAST'

       •   'south' / 'GTK_ANCHOR_SOUTH'

       •   'south-west' / 'GTK_ANCHOR_SOUTH_WEST'

       •   'south-east' / 'GTK_ANCHOR_SOUTH_EAST'

       •   'west' / 'GTK_ANCHOR_WEST'

       •   'east' / 'GTK_ANCHOR_EAST'

       •   'n' / 'GTK_ANCHOR_N'

       •   'nw' / 'GTK_ANCHOR_NW'

       •   'ne' / 'GTK_ANCHOR_NE'

       •   's' / 'GTK_ANCHOR_S'

       •   'sw' / 'GTK_ANCHOR_SW'

       •   'se' / 'GTK_ANCHOR_SE'

       •   'w' / 'GTK_ANCHOR_W'

       •   'e' / 'GTK_ANCHOR_E'

   flags Gtk2::Gdk::EventMask
       •   'exposure-mask' / 'GDK_EXPOSURE_MASK'

       •   'pointer-motion-mask' / 'GDK_POINTER_MOTION_MASK'

       •   'pointer-motion-hint-mask' / 'GDK_POINTER_MOTION_HINT_MASK'

       •   'button-motion-mask' / 'GDK_BUTTON_MOTION_MASK'

       •   'button1-motion-mask' / 'GDK_BUTTON1_MOTION_MASK'

       •   'button2-motion-mask' / 'GDK_BUTTON2_MOTION_MASK'

       •   'button3-motion-mask' / 'GDK_BUTTON3_MOTION_MASK'

       •   'button-press-mask' / 'GDK_BUTTON_PRESS_MASK'

       •   'button-release-mask' / 'GDK_BUTTON_RELEASE_MASK'

       •   'key-press-mask' / 'GDK_KEY_PRESS_MASK'

       •   'key-release-mask' / 'GDK_KEY_RELEASE_MASK'

       •   'enter-notify-mask' / 'GDK_ENTER_NOTIFY_MASK'

       •   'leave-notify-mask' / 'GDK_LEAVE_NOTIFY_MASK'

       •   'focus-change-mask' / 'GDK_FOCUS_CHANGE_MASK'

       •   'structure-mask' / 'GDK_STRUCTURE_MASK'

       •   'property-change-mask' / 'GDK_PROPERTY_CHANGE_MASK'

       •   'visibility-notify-mask' / 'GDK_VISIBILITY_NOTIFY_MASK'

       •   'proximity-in-mask' / 'GDK_PROXIMITY_IN_MASK'

       •   'proximity-out-mask' / 'GDK_PROXIMITY_OUT_MASK'

       •   'substructure-mask' / 'GDK_SUBSTRUCTURE_MASK'

       •   'scroll-mask' / 'GDK_SCROLL_MASK'

       •   'all-events-mask' / 'GDK_ALL_EVENTS_MASK'

   enum Gtk2::Gdk::GrabStatus
       •   'success' / 'GDK_GRAB_SUCCESS'

       •   'already-grabbed' / 'GDK_GRAB_ALREADY_GRABBED'

       •   'invalid-time' / 'GDK_GRAB_INVALID_TIME'

       •   'not-viewable' / 'GDK_GRAB_NOT_VIEWABLE'

       •   'frozen' / 'GDK_GRAB_FROZEN'

   enum Gtk2::Unit
       •   'pixel' / 'GTK_UNIT_PIXEL'

       •   'points' / 'GTK_UNIT_POINTS'

       •   'inch' / 'GTK_UNIT_INCH'

       •   'mm' / 'GTK_UNIT_MM'

SEE ALSO

       Glib::Object, Glib::InitiallyUnowned, Gtk2::Object, Gtk2::Widget, Gtk2::Container

COPYRIGHT

       Copyright (C) 2013 Gtk2-Perl Team