AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity

GtkThemingEngine: Use GdkPangoRenderer when painting layouts.

Browse Source
This commit is contained in:
Carlos Garnacho 2010-07-03 20:55:38 +02:00
parent 475f0fc266
commit 038bcdcdb6
1 changed files with 151 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

154
gtk/gtkthemingengine.c
View File

@ -1130,6 +1130,138 @@ gtk_theming_engine_render_line (GtkThemingEngine *engine,
cairo_restore (cr);
}
typedef struct _ByteRange ByteRange;
struct _ByteRange
{
guint start;
guint end;
};
static ByteRange*
range_new (guint start,
guint end)
{
ByteRange *br = g_new (ByteRange, 1);
br->start = start;
br->end = end;
return br;
}
static PangoLayout*
get_insensitive_layout (PangoLayout *layout)
{
GSList *embossed_ranges = NULL;
GSList *shaded_ranges = NULL;
PangoLayoutIter *iter;
GSList *tmp_list = NULL;
PangoLayout *new_layout;
PangoAttrList *attrs;
iter = pango_layout_get_iter (layout);
do
{
PangoLayoutRun *run;
PangoAttribute *attr;
gboolean need_shade = FALSE;
ByteRange *br;
run = pango_layout_iter_get_run_readonly (iter);
if (run)
{
tmp_list = run->item->analysis.extra_attrs;
while (tmp_list != NULL)
{
attr = tmp_list->data;
switch (attr->klass->type)
{
case PANGO_ATTR_FOREGROUND:
case PANGO_ATTR_BACKGROUND:
need_shade = TRUE;
break;
default:
break;
}
if (need_shade)
break;
tmp_list = g_slist_next (tmp_list);
}
br = range_new (run->item->offset, run->item->offset + run->item->length);
if (need_shade)
shaded_ranges = g_slist_prepend (shaded_ranges, br);
else
embossed_ranges = g_slist_prepend (embossed_ranges, br);
}
}
while (pango_layout_iter_next_run (iter));
pango_layout_iter_free (iter);
new_layout = pango_layout_copy (layout);
attrs = pango_layout_get_attributes (new_layout);
if (attrs == NULL)
{
/* Create attr list if there wasn't one */
attrs = pango_attr_list_new ();
pango_layout_set_attributes (new_layout, attrs);
pango_attr_list_unref (attrs);
}
tmp_list = embossed_ranges;
while (tmp_list != NULL)
{
PangoAttribute *attr;
ByteRange *br = tmp_list->data;
attr = gdk_pango_attr_embossed_new (TRUE);
attr->start_index = br->start;
attr->end_index = br->end;
pango_attr_list_change (attrs, attr);
g_free (br);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (embossed_ranges);
tmp_list = shaded_ranges;
while (tmp_list != NULL)
{
PangoAttribute *attr;
ByteRange *br = tmp_list->data;
attr = gdk_pango_attr_shade_new (0.7);
attr->start_index = br->start;
attr->end_index = br->end;
pango_attr_list_change (attrs, attr);
g_free (br);
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (shaded_ranges);
return new_layout;
}
static void
gtk_theming_engine_render_layout (GtkThemingEngine *engine,
cairo_t *cr,
@ -1140,10 +1272,13 @@ gtk_theming_engine_render_layout (GtkThemingEngine *engine,
GdkColor *fg_color;
GtkStateFlags flags;
GtkStateType state;
GdkScreen *screen;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
/* FIXME: Set clipping */
if (flags & GTK_STATE_FLAG_PRELIGHT)
state = GTK_STATE_PRELIGHT;
else if (flags & GTK_STATE_FLAG_INSENSITIVE)
@ -1155,9 +1290,22 @@ gtk_theming_engine_render_layout (GtkThemingEngine *engine,
"foreground-color", &fg_color,
NULL);
cairo_move_to (cr, x, y);
gdk_cairo_set_source_color (cr, fg_color);
pango_cairo_show_layout (cr, layout);
screen = gtk_theming_engine_get_screen (engine);
if (state == GTK_STATE_INSENSITIVE)
{
PangoLayout *insensitive_layout;
insensitive_layout = get_insensitive_layout (layout);
gdk_pango_show_layout (screen,
cr, x, y,
insensitive_layout,
fg_color, NULL);
g_object_unref (insensitive_layout);
}
else
gdk_pango_show_layout (screen, cr, x, y, layout,
fg_color, NULL);
cairo_restore (cr);