static ObjectChange *
text_create_change(Text *text, TextChangeType type,
gunichar ch, int pos, int row, DiaObject *obj)
{
struct TextObjectChange *change;
change = g_new0(struct TextObjectChange, 1);
change->obj = obj;
change->props = make_posision_and_size_prop_list ();
/* remember previous position/size */
if (change->obj->ops->get_props)
change->obj->ops->get_props(change->obj, change->props);
change->obj_change.apply = (ObjectChangeApplyFunc) text_change_apply;
change->obj_change.revert = (ObjectChangeRevertFunc) text_change_revert;
change->obj_change.free = (ObjectChangeFreeFunc) text_change_free;
change->text = text;
change->type = type;
change->ch = ch;
change->pos = pos;
change->row = row;
if (type == TYPE_DELETE_ALL)
change->str = text_get_string_copy(text);
else
change->str = NULL;
return (ObjectChange *)change;
}
static void
function_change_apply_revert( ObjectChange* objchg, DiaObject* obj)
{
int tmp ;
char* ttxt ;
FunctionChange* change = (FunctionChange*) objchg ;
Function* fcn = (Function*) obj ;
if ( change->change_type == WISH_FUNC || change->change_type == ALL ) {
tmp = fcn->is_wish ;
fcn->is_wish = change->is_wish ;
change->is_wish = tmp ;
}
if ( change->change_type == USER_FUNC || change->change_type == ALL ) {
tmp = fcn->is_user ;
fcn->is_user = change->is_user ;
change->is_user = tmp ;
}
if ( change->change_type == TEXT_EDIT || change->change_type == ALL ) {
ttxt = text_get_string_copy( fcn->text ) ;
text_set_string( fcn->text, change->text ) ;
g_free( change->text ) ;
change->text = ttxt ;
}
}
static void
objet_get_props(Objet * objet, GPtrArray *props)
{
text_get_attributes(objet->text,&objet->text_attrs);
/* the aligement is _not_ part of the deal */
objet->text_attrs.alignment = ALIGN_CENTER;
if (objet->attrib) g_free(objet->attrib);
objet->attrib = text_get_string_copy(objet->attributes);
object_get_props_from_offsets(&objet->element.object,
objet_offsets,props);
}
static ObjectChange *
function_insert_word( Function* func, const char* word, gboolean newline )
{
ObjectChange* change = function_create_change( func, TEXT_EDIT ) ;
char* old_chars = text_get_string_copy( func->text ) ;
char* new_chars = g_malloc( strlen( old_chars) + strlen( word )
+ ( newline ? 2 : 1) ) ;
sprintf( new_chars, newline ? "%s\n%s" : "%s%s", old_chars, word ) ;
text_set_string( func->text, new_chars ) ;
g_free( new_chars ) ;
g_free( old_chars ) ;
function_update_data( func ) ;
text_set_cursor_at_end( func->text ) ;
return change;
}
static ObjectChange*
function_create_change( Function* fcn, enum FuncChangeType change_type )
{
FunctionChange* change = g_new0(FunctionChange,1) ;
change->obj_change.apply = (ObjectChangeApplyFunc) function_change_apply_revert ;
change->obj_change.revert = (ObjectChangeRevertFunc) function_change_apply_revert ;
change->obj_change.free = (ObjectChangeFreeFunc) function_change_free ;
change->change_type = change_type ;
if ( change_type == WISH_FUNC || change_type == ALL )
change->is_wish = fcn->is_wish ;
if ( change_type == USER_FUNC || change_type == ALL )
change->is_user = fcn->is_user ;
if ( change_type == TEXT_EDIT || change_type == ALL )
change->text = text_get_string_copy( fcn->text ) ;
return (ObjectChange*) change ;
}
void
data_add_text(AttributeNode attr, Text *text)
{
DataNode composite;
char *str;
composite = data_add_composite(attr, "text");
str = text_get_string_copy(text);
data_add_string(composite_add_attribute(composite, "string"),
str);
g_free(str);
data_add_font(composite_add_attribute(composite, "font"),
text->font);
data_add_real(composite_add_attribute(composite, "height"),
text->height);
data_add_point(composite_add_attribute(composite, "pos"),
&text->position);
data_add_color(composite_add_attribute(composite, "color"),
&text->color);
data_add_enum(composite_add_attribute(composite, "alignment"),
text->alignment);
}
gboolean
text_to_path (const Text *text, GArray *points)
{
cairo_t *cr;
cairo_surface_t *surface;
PangoLayout *layout;
PangoRectangle ink_rect;
char *str;
gboolean ret = FALSE;
if (!PANGO_IS_CAIRO_FONT_MAP (pango_context_get_font_map (dia_font_get_context())))
return FALSE;
layout = pango_layout_new(dia_font_get_context());
pango_layout_set_font_description (layout, dia_font_get_description (text->font));
pango_layout_set_indent (layout, 0);
pango_layout_set_justify (layout, FALSE);
pango_layout_set_alignment (layout,
text->alignment == ALIGN_LEFT ? PANGO_ALIGN_LEFT :
text->alignment == ALIGN_RIGHT ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_CENTER);
str = text_get_string_copy (text);
pango_layout_set_text (layout, str, -1);
g_free (str);
pango_layout_get_extents (layout, &ink_rect, NULL);
/* any surface should do - this one is always available */
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
ink_rect.width / PANGO_SCALE, ink_rect.height / PANGO_SCALE);
cr = cairo_create (surface);
cairo_surface_destroy (surface);
pango_cairo_layout_path (cr, layout);
/* convert the path */
if (cairo_status (cr) == CAIRO_STATUS_SUCCESS)
{
cairo_path_t *path;
int i;
path = cairo_copy_path (cr);
for (i=0; i < path->num_data; i += path->data[i].header.length) {
cairo_path_data_t *data = &path->data[i];
BezPoint bp;
switch (data->header.type) {
case CAIRO_PATH_MOVE_TO :
bp.type = BEZ_MOVE_TO;
bp.p1.x = data[1].point.x; bp.p1.y = data[1].point.y;
break;
case CAIRO_PATH_LINE_TO :
bp.type = BEZ_LINE_TO;
bp.p1.x = data[1].point.x; bp.p1.y = data[1].point.y;
break;
case CAIRO_PATH_CURVE_TO :
bp.type = BEZ_CURVE_TO;
bp.p1.x = data[1].point.x; bp.p1.y = data[1].point.y;
bp.p2.x = data[2].point.x; bp.p2.y = data[2].point.y;
bp.p3.x = data[3].point.x; bp.p3.y = data[3].point.y;
break;
case CAIRO_PATH_CLOSE_PATH :
/* can't do anything */
default :
continue;
}
g_array_append_val (points, bp);
}
ret = (path->status == CAIRO_STATUS_SUCCESS);
cairo_path_destroy (path);
}
/* finally scale it ? */
/* clean up */
g_object_unref (layout);
cairo_destroy (cr);
return ret;
}
