Gtk2::Gdk::GC(3) User Contributed Perl Documentation Gtk2::Gdk::GC(3)

Gtk2::Gdk::GC - wrapper for GdkGC


gc = Gtk2::Gdk::GC->new ($drawable, $values=undef)

  • $drawable (Gtk2::Gdk::Drawable)
  • $values (scalar)

Create and return a new GC.

$drawable is used for the depth and the display ("Gtk2::Gdk::Display") for the GC. The GC can then be used with any drawable of the same depth on that display.

$values is a hashref containing some of the following keys,

foreground          Gtk2::Gdk::Color
background          Gtk2::Gdk::Color
font                Gtk2::Gdk::Font
function            Gtk2::Gdk::Function enum
fill                Gtk2::Gdk::Fill enum
tile                Gtk2::Gdk::Pixmap
stipple             Gtk2::Gdk::Pixmap
clip_mask           Gtk2::Gdk::Pixmap
subwindow_mode      Gtk2::Gdk::SubwindowMode enum
ts_x_origin         integer
ts_y_origin         integer
clip_x_origin       integer
clip_y_origin       integer
graphics_exposures  boolean integer 1 or 0
line_width          integer
line_style          Gtk2::Gdk::LineStyle enum
cap_style           Gtk2::Gdk::CapStyle enum
join_style          Gtk2::Gdk::JoinStyle enum

Keys not given get default values. For the "foreground" and "background" colour objects only the "pixel" field is used; the red, green and blue are ignored. For example

my $pixel = 0x123456;
my $color = Gtk2::Gdk::Color->new (0,0,0, $pixel);
my $gc = Gtk2::Gdk::GC->new_with_values
  ($win, { foreground => $color,
           line_style => 'on_off_dash' });

gc = Gtk2::Gdk::GC->new_with_values ($drawable, $values=undef)

  • $drawable (Gtk2::Gdk::Drawable)
  • $values (scalar)

$gc->set_background ($color)

$color (Gtk2::Gdk::Color)

$gc->set_clip_mask ($mask)

$mask (scalar)

$gc->set_clip_origin ($x, $y)

  • $x (integer)
  • $y (integer)

$gc->set_clip_rectangle ($rectangle)

$rectangle (Gtk2::Gdk::Rectangle or undef)

$gc->set_clip_region ($region)

$region (Gtk2::Gdk::Region or undef)

$gc->set_colormap ($colormap)

$colormap (Gtk2::Gdk::Colormap)

$src_gc (Gtk2::Gdk::GC)

$gc->set_dashes ($dash_offset, ...)

  • $dash_offset (integer)
  • ... (list) of integers, the length of the dash segments

Sets the way dashed-lines are drawn. Lines will be drawn with alternating on and off segments of the lengths specified in list of dashes. The manner in which the on and off segments are drawn is determined by the line_style value of the GC.

$gc->set_exposures ($exposures)

$exposures (boolean)

$gc->set_fill ($fill)

$fill (Gtk2::Gdk::Fill)

$gc->set_font ($font)

$font (Gtk2::Gdk::Font)

$gc->set_foreground ($color)

$color (Gtk2::Gdk::Color)

$gc->set_function ($function)

$function (Gtk2::Gdk::Function)

$gc->set_line_attributes ($line_width, $line_style, $cap_style, $join_style)

  • $line_width (integer)
  • $line_style (Gtk2::Gdk::LineStyle)
  • $cap_style (Gtk2::Gdk::CapStyle)
  • $join_style (Gtk2::Gdk::JoinStyle)

$gc->offset ($x_offset, $y_offset)

  • $x_offset (integer)
  • $y_offset (integer)

$gc->set_rgb_background ($rgb)

$rgb (unsigned)

$gc->set_rgb_bg_color ($color)

$color (Gtk2::Gdk::Color)

$gc->set_rgb_fg_color ($color)

$color (Gtk2::Gdk::Color)

$gc->set_rgb_foreground ($rgb)

$rgb (unsigned)

$gc->rgb_gc_set_background ($rgb)

$rgb (unsigned)

$gc->rgb_gc_set_foreground ($rgb)

$rgb (unsigned)

Since: gtk+ 2.2

$gc->set_stipple ($stipple)

$stipple (Gtk2::Gdk::Pixmap)

$gc->set_subwindow ($mode)

$mode (Gtk2::Gdk::SubwindowMode)

$gc->set_tile ($tile)

$tile (Gtk2::Gdk::Pixmap)

$gc->set_ts_origin ($x, $y)

  • $x (integer)
  • $y (integer)

Return the attributes of $gc in the form of a hashref with keys and values as described with "new" above.

In the "foreground" and "background" colour objects returned only the "pixel" fields are set; the red, green and blue fields are garbage.

$gc->set_values ($values)

$values (scalar)

Set some of the attributes of $gc. $values is a hashref of keys and values as described for "new" and "new_with_values" above. Fields not present in $values are left unchanged.

  • 'not-last' / 'GDK_CAP_NOT_LAST'
  • 'butt' / 'GDK_CAP_BUTT'
  • 'round' / 'GDK_CAP_ROUND'
  • 'projecting' / 'GDK_CAP_PROJECTING'

  • 'solid' / 'GDK_SOLID'
  • 'tiled' / 'GDK_TILED'
  • 'stippled' / 'GDK_STIPPLED'
  • 'opaque-stippled' / 'GDK_OPAQUE_STIPPLED'

  • 'copy' / 'GDK_COPY'
  • 'invert' / 'GDK_INVERT'
  • 'xor' / 'GDK_XOR'
  • 'clear' / 'GDK_CLEAR'
  • 'and' / 'GDK_AND'
  • 'and-reverse' / 'GDK_AND_REVERSE'
  • 'and-invert' / 'GDK_AND_INVERT'
  • 'noop' / 'GDK_NOOP'
  • 'or' / 'GDK_OR'
  • 'equiv' / 'GDK_EQUIV'
  • 'or-reverse' / 'GDK_OR_REVERSE'
  • 'copy-invert' / 'GDK_COPY_INVERT'
  • 'or-invert' / 'GDK_OR_INVERT'
  • 'nand' / 'GDK_NAND'
  • 'nor' / 'GDK_NOR'
  • 'set' / 'GDK_SET'

  • 'miter' / 'GDK_JOIN_MITER'
  • 'round' / 'GDK_JOIN_ROUND'
  • 'bevel' / 'GDK_JOIN_BEVEL'

  • 'solid' / 'GDK_LINE_SOLID'
  • 'on-off-dash' / 'GDK_LINE_ON_OFF_DASH'
  • 'double-dash' / 'GDK_LINE_DOUBLE_DASH'

  • 'clip-by-children' / 'GDK_CLIP_BY_CHILDREN'
  • 'include-inferiors' / 'GDK_INCLUDE_INFERIORS'

Gtk2, Glib::Object

Copyright (C) 2003-2011 by the gtk2-perl team.

This software is licensed under the LGPL. See Gtk2 for a full notice.

2022-05-29 perl v5.36.0