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[StThemeNode] Add basic background-position support

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Add basic support for background-position, which only supports absolute
values.

Also don't require an unit to be specified for 0 (because the unit does not
really matter here 0 is 0 regardless of the unit).

https://bugzilla.gnome.org/show_bug.cgi?id=624375
This commit is contained in:
Adel Gadllah 2010-09-01 18:13:43 +02:00
parent c779dcb608
commit 9f9067e29b
3 changed files with 54 additions and 7 deletions
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13
src/st/st-theme-node-drawing.c
View File

@ -466,8 +466,8 @@ get_background_position (StThemeNode *self,
w = cogl_texture_get_width (self->background_texture);
h = cogl_texture_get_height (self->background_texture);
/* scale the background into the allocated bounds */
if (w > result->x2 || h > result->y2)
/* scale the background into the allocated bounds, when not being absolutely positioned */
if ((w > result->x2 || h > result->y2) && !self->background_position_set)
{
gint new_h, new_w, offset;
gint box_w, box_h;
@ -498,11 +498,20 @@ get_background_position (StThemeNode *self,
result->x2 = box_w;
}
}
else
{
/* honor the specified position if any */
if (self->background_position_set)
{
result->x1 = self->background_position_x;
result->y1 = self->background_position_y;
}
else
{
/* center the background on the widget */
result->x1 = (int)(((allocation->x2 - allocation->x1) / 2) - (w / 2));
result->y1 = (int)(((allocation->y2 - allocation->y1) / 2) - (h / 2));
}
result->x2 = result->x1 + w;
result->y2 = result->y1 + h;
}

4
src/st/st-theme-node-private.h
View File

@ -22,6 +22,10 @@ struct _StThemeNode {
StGradientType background_gradient_type;
ClutterColor background_gradient_end;
int background_position_x;
int background_position_y;
gboolean background_position_set : 1;
ClutterColor foreground_color;
ClutterColor border_color[4];
ClutterColor outline_color;

34
src/st/st-theme-node.c
View File

@ -679,8 +679,19 @@ get_length_from_term (StThemeNode *node,
return VALUE_NOT_FOUND;
case NUM_GENERIC:
{
if (num->val != 0)
{
g_warning ("length values must specify a unit");
return VALUE_NOT_FOUND;
}
else
{
type = ABSOLUTE;
multiplier = 0;
}
break;
}
case NUM_PERCENTAGE:
g_warning ("percentage lengths not currently supported");
@ -1424,6 +1435,7 @@ _st_theme_node_ensure_background (StThemeNode *node)
node->background_computed = TRUE;
node->background_color = TRANSPARENT_COLOR;
node->background_gradient_type = ST_GRADIENT_NONE;
node->background_position_set = FALSE;
ensure_properties (node);
@ -1450,6 +1462,7 @@ _st_theme_node_ensure_background (StThemeNode *node)
node->background_color = TRANSPARENT_COLOR;
g_free (node->background_image);
node->background_image = NULL;
node->background_position_set = FALSE;
for (term = decl->value; term; term = term->next)
{
@ -1478,6 +1491,27 @@ _st_theme_node_ensure_background (StThemeNode *node)
}
}
}
else if (strcmp (property_name, "-position") == 0)
{
GetFromTermResult result = get_length_from_term_int (node, decl->value, FALSE, &node->background_position_x);
if (result == VALUE_NOT_FOUND)
{
node->background_position_set = FALSE;
continue;
}
else
node->background_position_set = TRUE;
result = get_length_from_term_int (node, decl->value->next, FALSE, &node->background_position_y);
if (result == VALUE_NOT_FOUND)
{
node->background_position_set = FALSE;
continue;
}
else
node->background_position_set = TRUE;
}
else if (strcmp (property_name, "-color") == 0)
{
GetFromTermResult result;