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St: support -st-natural-width/height CSS properties

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It is sometimes desirable to specify the size of a box from CSS without
changing the minimum-width too.
This property implements that.

https://bugzilla.gnome.org/show_bug.cgi?id=664411
This commit is contained in:
Giovanni Campagna 2012-11-30 17:03:45 +01:00
parent a6395c95d4
commit 8b659f0f4c
1 changed files with 38 additions and 17 deletions
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55
src/st/st-theme-node.c
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@ -1554,6 +1554,7 @@ void
_st_theme_node_ensure_geometry (StThemeNode *node)
{
int i, j;
int width, height;
if (node->geometry_computed)
return;
@ -1571,6 +1572,8 @@ _st_theme_node_ensure_geometry (StThemeNode *node)
node->outline_width = 0;
node->outline_color = TRANSPARENT_COLOR;
width = -1;
height = -1;
node->width = -1;
node->height = -1;
node->min_width = -1;
@ -1590,8 +1593,12 @@ _st_theme_node_ensure_geometry (StThemeNode *node)
else if (g_str_has_prefix (property_name, "padding"))
do_padding_property (node, decl);
else if (strcmp (property_name, "width") == 0)
do_size_property (node, decl, &node->width);
do_size_property (node, decl, &width);
else if (strcmp (property_name, "height") == 0)
do_size_property (node, decl, &height);
else if (strcmp (property_name, "-st-natural-width") == 0)
do_size_property (node, decl, &node->width);
else if (strcmp (property_name, "-st-natural-height") == 0)
do_size_property (node, decl, &node->height);
else if (strcmp (property_name, "min-width") == 0)
do_size_property (node, decl, &node->min_width);
@ -1603,29 +1610,43 @@ _st_theme_node_ensure_geometry (StThemeNode *node)
do_size_property (node, decl, &node->max_height);
}
if (node->width != -1)
/*
* Setting width sets max-width, min-width and -st-natural-width,
* unless one of them is set individually.
* Setting min-width sets natural width too, so that the minimum
* width reported by get_preferred_width() is always not greater
* than the natural width.
* The natural width in node->width is actually a lower bound, the
* actor is allowed to request something greater than that, but
* not greater than max-width.
* We don't need to clamp node->width to be less than max_width,
* that's done by adjust_preferred_width.
*/
if (width != -1)
{
if (node->width == -1)
node->width = width;
if (node->min_width == -1)
node->min_width = node->width;
else if (node->width < node->min_width)
node->width = node->min_width;
node->min_width = width;
if (node->max_width == -1)
node->max_width = node->width;
else if (node->width > node->max_width)
node->width = node->max_width;
node->max_width = width;
}
if (node->height != -1)
if (node->width < node->min_width)
node->width = node->min_width;
if (height != -1)
{
if (node->height == -1)
node->height = height;
if (node->min_height == -1)
node->min_height = node->height;
else if (node->height < node->min_height)
node->height = node->min_height;
node->min_height = height;
if (node->max_height == -1)
node->max_height = node->height;
else if (node->height > node->max_height)
node->height = node->max_height;
node->max_height = height;
}
if (node->height < node->min_height)
node->height = node->min_height;
}
int
@ -3425,7 +3446,7 @@ st_theme_node_adjust_preferred_width (StThemeNode *node,
if (natural_width_p)
{
if (node->width != -1)
*natural_width_p = node->width;
*natural_width_p = MAX (*natural_width_p, node->width);
if (node->max_width != -1)
*natural_width_p = MIN (*natural_width_p, node->max_width);
*natural_width_p += width_inc;
@ -3491,7 +3512,7 @@ st_theme_node_adjust_preferred_height (StThemeNode *node,
if (natural_height_p)
{
if (node->height != -1)
*natural_height_p = node->height;
*natural_height_p = MAX (*natural_height_p, node->height);
if (node->max_height != -1)
*natural_height_p = MIN (*natural_height_p, node->max_height);
*natural_height_p += height_inc;