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app: add group filling support to GimpCanvasItem and GimpCanvasGroup 

The code is almost identical to the group stroking feature.
This commit is contained in:
Michael Natterer 2010-09-27 22:59:36 +02:00
parent b63e26e45d
commit d7cb20b0d5
4 changed files with 85 additions and 11 deletions
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43
app/display/gimpcanvasgroup.c
View File

@ -36,7 +36,8 @@
enum
{
PROP_0,
PROP_GROUP_STROKING
PROP_GROUP_STROKING,
PROP_GROUP_FILLING
};
@ -46,6 +47,7 @@ struct _GimpCanvasGroupPrivate
{
GList *items;
gboolean group_stroking;
gboolean group_filling;
};
#define GET_PRIVATE(group) \
@ -96,6 +98,12 @@ gimp_canvas_group_class_init (GimpCanvasGroupClass *klass)
FALSE,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_GROUP_FILLING,
g_param_spec_boolean ("group-filling",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GimpCanvasGroupPrivate));
}
@ -132,6 +140,9 @@ gimp_canvas_group_set_property (GObject *object,
case PROP_GROUP_STROKING:
private->group_stroking = g_value_get_boolean (value);
break;
case PROP_GROUP_FILLING:
private->group_filling = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
@ -152,6 +163,9 @@ gimp_canvas_group_get_property (GObject *object,
case PROP_GROUP_STROKING:
g_value_set_boolean (value, private->group_stroking);
break;
case PROP_GROUP_FILLING:
g_value_set_boolean (value, private->group_filling);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
@ -176,6 +190,9 @@ gimp_canvas_group_draw (GimpCanvasItem *item,
if (private->group_stroking)
_gimp_canvas_item_stroke (item, shell, cr);
if (private->group_filling)
_gimp_canvas_item_fill (item, shell, cr);
}
static GdkRegion *
@ -192,15 +209,15 @@ gimp_canvas_group_get_extents (GimpCanvasItem *item,
GdkRegion *sub_region = gimp_canvas_item_get_extents (sub_item,
shell);
if (region)
if (! region)
{
region = sub_region;
}
else if (sub_region)
{
gdk_region_union (region, sub_region);
gdk_region_destroy (sub_region);
}
else
{
region = sub_region;
}
}
return region;
@ -227,6 +244,9 @@ gimp_canvas_group_add_item (GimpCanvasGroup *group,
if (private->group_stroking)
gimp_canvas_item_suspend_stroking (item);
if (private->group_filling)
gimp_canvas_item_suspend_filling (item);
private->items = g_list_append (private->items, g_object_ref (item));
}
@ -257,3 +277,14 @@ gimp_canvas_group_set_group_stroking (GimpCanvasGroup *group,
"group-stroking", group_stroking ? TRUE : FALSE,
NULL);
}
void
gimp_canvas_group_set_group_filling (GimpCanvasGroup *group,
gboolean group_filling)
{
g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
g_object_set (group,
"group-filling", group_filling ? TRUE : FALSE,
NULL);
}

2
app/display/gimpcanvasgroup.h
View File

@ -57,6 +57,8 @@ void gimp_canvas_group_remove_item (GimpCanvasGroup *group,
void gimp_canvas_group_set_group_stroking (GimpCanvasGroup *group,
gboolean group_stroking);
void gimp_canvas_group_set_group_filling (GimpCanvasGroup *group,
gboolean group_filling);
#endif /* __GIMP_CANVAS_GROUP_H__ */

48
app/display/gimpcanvasitem.c
View File

@ -47,6 +47,7 @@ struct _GimpCanvasItemPrivate
cairo_line_cap_t line_cap;
gboolean highlight;
gint suspend_stroking;
gint suspend_filling;
};
#define GET_PRIVATE(item) \
@ -115,6 +116,7 @@ gimp_canvas_item_init (GimpCanvasItem *item)
private->line_cap = CAIRO_LINE_CAP_ROUND;
private->highlight = FALSE;
private->suspend_stroking = 0;
private->suspend_filling = 0;
}
static void
@ -255,6 +257,32 @@ gimp_canvas_item_resume_stroking (GimpCanvasItem *item)
private->suspend_stroking--;
}
void
gimp_canvas_item_suspend_filling (GimpCanvasItem *item)
{
GimpCanvasItemPrivate *private;
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
private = GET_PRIVATE (item);
private->suspend_filling++;
}
void
gimp_canvas_item_resume_filling (GimpCanvasItem *item)
{
GimpCanvasItemPrivate *private;
g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
private = GET_PRIVATE (item);
g_return_if_fail (private->suspend_filling > 0);
private->suspend_filling--;
}
/* protected functions */
@ -265,6 +293,9 @@ _gimp_canvas_item_stroke (GimpCanvasItem *item,
{
GimpCanvasItemPrivate *private = GET_PRIVATE (item);
if (private->suspend_filling > 0)
g_warning ("_gimp_canvas_item_stroke() on an item that is in a filling group");
if (private->suspend_stroking == 0)
{
cairo_set_line_cap (cr, private->line_cap);
@ -291,10 +322,17 @@ _gimp_canvas_item_fill (GimpCanvasItem *item,
if (private->suspend_stroking > 0)
g_warning ("_gimp_canvas_item_fill() on an item that is in a stroking group");
gimp_display_shell_set_tool_bg_style (shell, cr);
cairo_set_line_width (cr, 2.0);
cairo_stroke_preserve (cr);
if (private->suspend_filling == 0)
{
gimp_display_shell_set_tool_bg_style (shell, cr);
cairo_set_line_width (cr, 2.0);
cairo_stroke_preserve (cr);
gimp_display_shell_set_tool_fg_style (shell, cr, private->highlight);
cairo_fill (cr);
gimp_display_shell_set_tool_fg_style (shell, cr, private->highlight);
cairo_fill (cr);
}
else
{
cairo_new_sub_path (cr);
}
}

3
app/display/gimpcanvasitem.h
View File

@ -68,6 +68,9 @@ void gimp_canvas_item_set_highlight (GimpCanvasItem *item,
void gimp_canvas_item_suspend_stroking (GimpCanvasItem *item);
void gimp_canvas_item_resume_stroking (GimpCanvasItem *item);
void gimp_canvas_item_suspend_filling (GimpCanvasItem *item);
void gimp_canvas_item_resume_filling (GimpCanvasItem *item);
/* protected */