File: GdkDrawable.xs

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/*
 * Copyright (c) 2003-2005, 2009, 2010 by the gtk2-perl team (see the file AUTHORS)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the 
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
 * Boston, MA  02111-1307  USA.
 *
 * $Id$
 */

#include "gtk2perl.h"

#ifndef G_LIKELY  /* new in glib 2.2 */
#define G_LIKELY(cond)  (cond)  /* fallback */
#endif

/*
NOTE:
GdkDrawable descends directly from GObject, so be sure to use GdkDrawable_noinc
for functions that return brand-new objects!  (i don't think there are any,
but there are several functions in other modules returning GdkDrawable
subclasses)
*/

MODULE = Gtk2::Gdk::Drawable	PACKAGE = Gtk2::Gdk::Drawable	PREFIX = gdk_drawable_

 ## deprecated
 ## GdkDrawable* gdk_drawable_ref (GdkDrawable *drawable)
 ## deprecated
 ## void gdk_drawable_unref (GdkDrawable *drawable)
 ## deprecated
 ## gpointer gdk_drawable_get_data (GdkDrawable *drawable, const gchar *key)

 ## void gdk_drawable_get_size (GdkDrawable *drawable, gint *width, gint *height)
void gdk_drawable_get_size (GdkDrawable *drawable, OUTLIST gint width, OUTLIST gint height)

 ## void gdk_drawable_set_colormap (GdkDrawable *drawable, GdkColormap *colormap)
void
gdk_drawable_set_colormap (drawable, colormap)
	GdkDrawable *drawable
	GdkColormap *colormap

 ## GdkColormap* gdk_drawable_get_colormap (GdkDrawable *drawable)
GdkColormap_ornull *
gdk_drawable_get_colormap (drawable)
	GdkDrawable *drawable

 ## GdkVisual* gdk_drawable_get_visual (GdkDrawable *drawable)
GdkVisual*
gdk_drawable_get_visual (drawable)
	GdkDrawable *drawable

 ## gint gdk_drawable_get_depth (GdkDrawable *drawable)
gint
gdk_drawable_get_depth (drawable)
	GdkDrawable *drawable

#if GTK_CHECK_VERSION(2,2,0)

## GdkScreen* gdk_drawable_get_screen (GdkDrawable *drawable)
GdkScreen*
gdk_drawable_get_screen (drawable)
	GdkDrawable *drawable

## GdkDisplay* gdk_drawable_get_display (GdkDrawable *drawable)
GdkDisplay*
gdk_drawable_get_display (drawable)
	GdkDrawable *drawable

#endif

## GdkRegion* gdk_drawable_get_clip_region (GdkDrawable *drawable)
GdkRegion_own*
gdk_drawable_get_clip_region (drawable)
	GdkDrawable *drawable

## GdkRegion* gdk_drawable_get_visible_region (GdkDrawable *drawable)
GdkRegion_own*
gdk_drawable_get_visible_region (drawable)
	GdkDrawable *drawable

MODULE = Gtk2::Gdk::Drawable	PACKAGE = Gtk2::Gdk::Drawable	PREFIX = gdk_

 ## void gdk_draw_line (GdkDrawable *drawable, GdkGC *gc, gint x1_, gint y1_, gint x2_, gint y2_)
void
gdk_draw_line (drawable, gc, x1_, y1_, x2_, y2_)
	GdkDrawable *drawable
	GdkGC *gc
	gint x1_
	gint y1_
	gint x2_
	gint y2_

 ## void gdk_draw_rectangle (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height)
void
gdk_draw_rectangle (drawable, gc, filled, x, y, width, height)
	GdkDrawable *drawable
	GdkGC *gc
	gboolean filled
	gint x
	gint y
	gint width
	gint height

 ## void gdk_draw_arc (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height, gint angle1, gint angle2)
void
gdk_draw_arc (drawable, gc, filled, x, y, width, height, angle1, angle2)
	GdkDrawable *drawable
	GdkGC *gc
	gboolean filled
	gint x
	gint y
	gint width
	gint height
	gint angle1
	gint angle2

 ## void gdk_draw_polygon (GdkDrawable *drawable, GdkGC *gc, gboolean filled, GdkPoint *points, gint npoints)
=for apidoc
=for arg x1 (integer) the x coordinate of the first point
=for arg y1 (integer) the y coordinate of the first point
=for arg ... pairs of x and y coordinates
=cut
void
gdk_draw_polygon (drawable, gc, filled, x1, y1, ...)
	GdkDrawable *drawable
	GdkGC *gc
	gboolean filled
    PREINIT:
	GdkPoint * points;
	gint npoints;
	gint i, j;
    CODE:
	npoints = (items-3)/2;
	points = g_new (GdkPoint, npoints);
	for (i = 0, j = 3; i < npoints ; i++, j+=2) {
		points[i].x = SvIV (ST (j));
		points[i].y = SvIV (ST (j+1));
	}
	gdk_draw_polygon (drawable, gc, filled, points, npoints);
	g_free (points);

 ## void gdk_draw_drawable (GdkDrawable *drawable, GdkGC *gc, GdkDrawable *src, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height)
void
gdk_draw_drawable (drawable, gc, src, xsrc, ysrc, xdest, ydest, width, height)
	GdkDrawable *drawable
	GdkGC *gc
	GdkDrawable *src
	gint xsrc
	gint ysrc
	gint xdest
	gint ydest
	gint width
	gint height

 ## void gdk_draw_image (GdkDrawable *drawable, GdkGC *gc, GdkImage *image, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height)
void
gdk_draw_image (drawable, gc, image, xsrc, ysrc, xdest, ydest, width, height)
	GdkDrawable *drawable
	GdkGC *gc
	GdkImage *image
	gint xsrc
	gint ysrc
	gint xdest
	gint ydest
	gint width
	gint height

 ## void gdk_draw_point (GdkDrawable *drawable, GdkGC *gc, gint x, gint y)
void
gdk_draw_point (drawable, gc, x, y)
	GdkDrawable *drawable
	GdkGC *gc
	gint x
	gint y

 ## void gdk_draw_points (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints)
 ## void gdk_draw_lines (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints)

=for apidoc Gtk2::Gdk::Drawable::draw_lines
=for arg ... integer x,y coordinates (possibly none)
For example

    $win->draw_lines ($gc, 0,0, 20,30, 40,20);
=cut

=for apidoc
=for arg ... integer x,y coordinates (possibly none)
For example three points

    $win->draw_points ($gc, 0,0, 10,10, 20,20);
=cut
void
gdk_draw_points (drawable, gc, ...)
	GdkDrawable *drawable
	GdkGC *gc
    ALIAS:
	Gtk2::Gdk::Drawable::draw_lines = 1
    PREINIT:
	GdkPoint * points;
	gint npoints;
	gint i, j;
    CODE:
	npoints = (items-2)/2;
	/* gdk_draw_points() and gdk_draw_lines() both accept npoints==0 but
	   can skip entirely with a couple of bytes of code. */
	if (G_LIKELY (npoints != 0)) {
		points = g_new (GdkPoint, npoints);
		for (i = 0, j = 2; i < npoints ; i++, j+=2) {
			points[i].x = SvIV (ST (j));
			points[i].y = SvIV (ST (j+1));
		}
		if (ix == 1)
			gdk_draw_lines (drawable, gc, points, npoints);
		else
			gdk_draw_points (drawable, gc, points, npoints);
		g_free (points);
	}

 #### void gdk_draw_segments (GdkDrawable *drawable, GdkGC *gc, GdkSegment *segs, gint nsegs)
=for apidoc
=for arg ... quads of x1,y1,x2,y2 coordinates
For example to draw two diagonal line segments,

    $drawable->draw_segments($gc, 0,0,100,100, 200,200,300,300);
=cut
void
gdk_draw_segments (drawable, gc, ...)
	GdkDrawable *drawable
	GdkGC *gc
    PREINIT:
	GdkSegment * segs;
	gint nsegs;
	gint i, j;
    CODE:
	nsegs = (items-2)/4;
	segs = g_new (GdkSegment, nsegs);
	for (i = 0, j = 2; i < nsegs ; i++, j+=4) {
		segs[i].x1 = SvIV (ST (j+0));
		segs[i].y1 = SvIV (ST (j+1));
		segs[i].x2 = SvIV (ST (j+2));
		segs[i].y2 = SvIV (ST (j+3));
	}
	gdk_draw_segments (drawable, gc, segs, nsegs);
	g_free (segs);


#if GTK_CHECK_VERSION(2,2,0)

 ## void gdk_draw_pixbuf (GdkDrawable *drawable, GdkGC *gc, GdkPixbuf *pixbuf, gint src_x, gint src_y, gint dest_x, gint dest_y, gint width, gint height, GdkRgbDither dither, gint x_dither, gint y_dither)
void
gdk_draw_pixbuf (drawable, gc, pixbuf, src_x, src_y, dest_x, dest_y, width, height, dither, x_dither, y_dither)
	GdkDrawable *drawable
	GdkGC_ornull *gc
	GdkPixbuf *pixbuf
	gint src_x
	gint src_y
	gint dest_x
	gint dest_y
	gint width
	gint height
	GdkRgbDither dither
	gint x_dither
	gint y_dither

#endif

 # FIXME need a way to retrieve a PangoGlyphString
## ## void gdk_draw_glyphs (GdkDrawable *drawable, GdkGC *gc, PangoFont *font, gint x, gint y, PangoGlyphString *glyphs)
##void
##gdk_draw_glyphs (drawable, gc, font, x, y, glyphs)
##	GdkDrawable *drawable
##	GdkGC *gc
##	PangoFont *font
##	gint x
##	gint y
##	PangoGlyphString *glyphs

 # FIXME: gdk_draw_glyphs_transformed

 ## void gdk_draw_layout_line (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, PangoLayoutLine *line)
void
gdk_draw_layout_line (drawable, gc, x, y, line)
	GdkDrawable *drawable
	GdkGC *gc
	gint x
	gint y
	PangoLayoutLine *line

 ## void gdk_draw_layout (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, PangoLayout *layout)
void
gdk_draw_layout (drawable, gc, x, y, layout)
	GdkDrawable *drawable
	GdkGC *gc
	gint x
	gint y
	PangoLayout *layout

 ## void gdk_draw_layout_line_with_colors (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, PangoLayoutLine *line, GdkColor *foreground, GdkColor *background)
void
gdk_draw_layout_line_with_colors (drawable, gc, x, y, line, foreground, background)
	GdkDrawable *drawable
	GdkGC *gc
	gint x
	gint y
	PangoLayoutLine *line
	GdkColor_ornull *foreground
	GdkColor_ornull *background

 ## void gdk_draw_layout_with_colors (GdkDrawable *drawable, GdkGC *gc, gint x, gint y, PangoLayout *layout, GdkColor *foreground, GdkColor *background)
void
gdk_draw_layout_with_colors (drawable, gc, x, y, layout, foreground, background)
	GdkDrawable *drawable
	GdkGC *gc
	gint x
	gint y
	PangoLayout *layout
	GdkColor_ornull *foreground
	GdkColor_ornull *background

##  The docs say that "[t]his is low level functionality used internally to
##  implement rotated underlines and backgrouds when rendering a PangoLayout
##  and is likely not useful for applications."
##  void gdk_draw_trapezoids (GdkDrawable *drawable, GdkGC *gc, GdkTrapezoid *trapezoids, gint n_trapezoids);

MODULE = Gtk2::Gdk::Drawable	PACKAGE = Gtk2::Gdk::Drawable	PREFIX = gdk_drawable_

 ## GdkImage* gdk_drawable_get_image (GdkDrawable *drawable, gint x, gint y, gint width, gint height)
 ## The return is a non-floating refcount==1, hence _noinc.
GdkImage_noinc *
gdk_drawable_get_image (drawable, x, y, width, height)
	GdkDrawable *drawable
	gint x
	gint y
	gint width
	gint height

#if GTK_CHECK_VERSION(2, 4, 0)

GdkImage *
gdk_drawable_copy_to_image (drawable, image, src_x, src_y, dest_x, dest_y, width, height)
	GdkDrawable     * drawable
	GdkImage_ornull * image
	gint              src_x
	gint              src_y
	gint              dest_x
	gint              dest_y
	gint              width
	gint              height
    CLEANUP:
	/* if the return value has been allocated anew,
	 * the caller will own it. */
	if (!image)
		g_object_unref (RETVAL);

#endif