* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 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.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser 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.
*/
/*
- * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
static void gdk_gc_class_init (GObjectClass *class);
static void gdk_gc_finalize (GObject *object);
-GObjectClass *parent_class;
+static GObjectClass *parent_class;
GType
gdk_gc_get_type (void)
object_type = g_type_register_static (G_TYPE_OBJECT,
"GdkGC",
- &object_info);
+ &object_info,
+ G_TYPE_FLAG_ABSTRACT);
}
return object_type;
if (values_mask & GDK_GC_TS_Y_ORIGIN)
gc->ts_y_origin = values->ts_y_origin;
- gc->colormap = gdk_drawable_get_colormap (drawable);
- if (gc->colormap)
- g_object_ref (G_OBJECT (gc->colormap));
+ /* gc->colormap will already be set if gdk_gc_new_with_values()
+ * recurses - as in GdkPixmap => impl object.
+ */
+ if (!gc->colormap)
+ {
+ gc->colormap = gdk_drawable_get_colormap (drawable);
+ if (gc->colormap)
+ g_object_ref (gc->colormap);
+ }
return gc;
}
GdkGC *gc = GDK_GC (object);
if (gc->colormap)
- g_object_unref (G_OBJECT (gc->colormap));
+ g_object_unref (gc->colormap);
parent_class->finalize (object);
}
+/**
+ * gdk_gc_ref:
+ * @gc: a #GdkGC
+ *
+ * Deprecated function; use g_object_ref() instead.
+ *
+ * Return value: the gc.
+ **/
GdkGC *
gdk_gc_ref (GdkGC *gc)
{
- return (GdkGC *) g_object_ref (G_OBJECT (gc));
+ return (GdkGC *) g_object_ref (gc);
}
+/**
+ * gdk_gc_unref:
+ * @gc: a #GdkGC
+ *
+ * Deprecated function; use g_object_unref() instead.
+ **/
void
gdk_gc_unref (GdkGC *gc)
{
- g_object_unref (G_OBJECT (gc));
+ g_object_unref (gc);
}
void
GDK_GC_GET_CLASS (gc)->get_values (gc, values);
}
+/**
+ * gdk_gc_set_values:
+ * @gc: a #GdkGC
+ * @values: struct containing the new values
+ * @values_mask: mask indicating which struct fields are to be used
+ *
+ * Sets attributes of a graphics context in bulk. For each flag set in
+ * @values_mask, the corresponding field will be read from @values and
+ * set as the new value for @gc. If you're only setting a few values
+ * on @gc, calling individual "setter" functions is likely more
+ * convenient.
+ *
+ **/
void
gdk_gc_set_values (GdkGC *gc,
GdkGCValues *values,
GDK_GC_GET_CLASS (gc)->set_dashes (gc, dash_offset, dash_list, n);
}
+/**
+ * gdk_gc_offset:
+ * @gc: a #GdkGC
+ * @x_offset: amount by which to offset the GC in the X direction
+ * @y_offset: amount by which to offset the GC in the Y direction
+ *
+ * Offset attributes such as the clip and tile-stipple origins
+ * of the GC so that drawing at x - x_offset, y - y_offset with
+ * the offset GC has the same effect as drawing at x, y with the original
+ * GC.
+ **/
+void
+gdk_gc_offset (GdkGC *gc,
+ gint x_offset,
+ gint y_offset)
+{
+ if (x_offset != 0 || y_offset != 0)
+ {
+ GdkGCValues values;
+
+ values.clip_x_origin = gc->clip_x_origin - x_offset;
+ values.clip_y_origin = gc->clip_y_origin - y_offset;
+ values.ts_x_origin = gc->ts_x_origin - x_offset;
+ values.ts_y_origin = gc->ts_y_origin - y_offset;
+
+ gdk_gc_set_values (gc, &values,
+ GDK_GC_CLIP_X_ORIGIN |
+ GDK_GC_CLIP_Y_ORIGIN |
+ GDK_GC_TS_X_ORIGIN |
+ GDK_GC_TS_Y_ORIGIN);
+ }
+}
+
/**
* gdk_gc_set_colormap:
* @gc: a #GdkGC
if (gc->colormap != colormap)
{
if (gc->colormap)
- g_object_unref (G_OBJECT (gc->colormap));
+ g_object_unref (gc->colormap);
gc->colormap = colormap;
- g_object_ref (G_OBJECT (gc->colormap));
+ g_object_ref (gc->colormap);
}
}
tmp_color = *color;
gdk_rgb_find_color (cmap, &tmp_color);
- gdk_gc_set_foreground (cmap, &tmp_color);
+ gdk_gc_set_foreground (gc, &tmp_color);
}
/**
tmp_color = *color;
gdk_rgb_find_color (cmap, &tmp_color);
- gdk_gc_set_foreground (cmap, &tmp_color);
+ gdk_gc_set_background (gc, &tmp_color);
}
projects / ~andy / gtk / blobdiff