Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
Kristian Rietveld wrote:
On Mon, Oct 08, 2007 at 03:53:29PM +0200, Bastiaan Veelo wrote:
Something like this seems to work for me:
button = gtk_button_new_with_label (...);
style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (button),
*.GtkTreeView.GtkButton,
NULL,
G_OBJECT_TYPE (button));
gtk_widget_set_style (button, style);
snip
I guess I need to trick the theme engine into thinking that it is
drawing a GtkTreeView button. Is there a way to do that? If the method
would be engine-dependent, I need it to work on MS Windows.
That is exactly what the code above tries to achieve.
snip
The reason why this is not going to work (for the windows theme at
least, GTK+ 2.10) is a hard-coded check on the type of widget-parent in
draw_box() on line 1929 of msw_style.c:
if (GTK_IS_TREE_VIEW (widget-parent)
|| GTK_IS_CLIST (widget-parent))
{
if (xp_theme_draw
(window, XP_THEME_ELEMENT_LIST_HEADER, style, x, y,
width, height, state_type, area))
return;
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Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
Bastiaan Veelo wrote:
The reason why this is not going to work (for the windows theme at
least, GTK+ 2.10) is a hard-coded check on the type of widget-parent in
draw_box() on line 1929 of msw_style.c:
So I faked the parent widget through some evil hacking in the expose
function below. It works, for now.
#include gtk/gtk.h
G_BEGIN_DECLS
#define GTK_TYPE_HEADER (gtk_header_get_type ())
#define GTK_HEADER(obj) (G_TYPE_CHECK_INSTANCE_CAST
((obj), GTK_TYPE_HEADER, GtkMenuSheet))
#define GTK_HEADER_CLASS(klass) G_TYPE_CHECK_CLASS_CAST ((klass,
GTK_TYPE_HEADER, GtkMenuSheetClass))
#define GTK_IS_HEADER(obj) (G_TYPE_CHECK_INSTANCE_TYPE
((obj), GTK_TYPE_HEADER))
#define GTK_IS_HEADER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE
((klass), GTK_TYPE_HEADER))
#define GTK_HEADER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS
((obj), GTK_TYPE_HEADER, GtkMenuSheetClass))
typedef struct _GtkHeader GtkHeader;
typedef struct _GtkHeaderClass GtkHeaderClass;
struct _GtkHeader
{
GtkButton parent;
};
struct _GtkHeaderClass
{
GtkButtonClass parent_class;
};
G_END_DECLS
GTypegtk_header_get_type (void) G_GNUC_CONST;
GtkWidget *gtk_header_sheet_new();
static gboolean gtk_header_expose (GtkWidget
*widget,
GdkEventExpose
*event);
static void
gtk_header_class_init (GtkHeaderClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
widget_class-expose_event = gtk_header_expose;
}
static void
gtk_header_init (GtkHeader *header)
{
}
/* GType Methods */
G_DEFINE_TYPE (GtkHeader, gtk_header, GTK_TYPE_BUTTON)
GType
gtk_header_type ()
{
static GType header_type = 0;
if (!header_type)
{
static const GTypeInfo header_info =
{
sizeof (GtkHeaderClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_header_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkHeader),
0,/* n_preallocs */
(GInstanceInitFunc) gtk_header_init,
};
header_type = g_type_register_static (GTK_TYPE_BUTTON,
GtkHeader,
header_info,
0);
}
return header_type;
}
static gboolean
gtk_header_expose (GtkWidget *widget,
GdkEventExpose *event)
{
static GtkWidget *treeview = NULL;
if (!treeview) treeview = gtk_tree_view_new();
/* Trick draw_box() in msw_style.c on line 1929 into thinking that our
parent
is a GtkTreeView. This works on MS Windows and GTK+ 2.10.6, but it may
fail miserably when used with other themes or other versions of
GTK+. */
GtkWidget *real_parent = widget-parent;
widget-parent = treeview;
(* GTK_WIDGET_CLASS (gtk_header_parent_class)-expose_event) (widget,
event);
widget-parent = real_parent;
return FALSE;
}
GtkWidget*
gtk_header_new (void)
{
return g_object_new (GTK_TYPE_HEADER, NULL);
}
int main( int argc,
char *argv[] )
{
gtk_init (argc, argv);
GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, destroy,
G_CALLBACK (gtk_widget_destroyed), window);
GtkWidget *header = gtk_header_new();
gtk_button_set_label (GTK_BUTTON (header), Header);
/* Not sure whether the folowwing is necessary. */
GtkStyle *style = gtk_rc_get_style_by_paths (gtk_widget_get_settings
(header),
NULL,
*.GtkTreeView.GtkButton,
GTK_TYPE_BUTTON);
gtk_widget_set_style (header, style);
gtk_container_add (GTK_CONTAINER (window), header);
gtk_widget_show_all(window);
gtk_main ();
return 0;
}
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Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
On Mon, Oct 08, 2007 at 03:53:29PM +0200, Bastiaan Veelo wrote: Something like this seems to work for me: button = gtk_button_new_with_label (...); style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (button), *.GtkTreeView.GtkButton, NULL, G_OBJECT_TYPE (button)); gtk_widget_set_style (button, style); Thank you for replying. However, for me the above has no visible effect. Now I understand that a GtkStyle is just about colors and similar settings, which only partly determine the looks of a widget. In my case I suspect that a GtkTreeView.GtkButton has the same GtkStyle settings as ordinary buttons, which is why I see no change. By default it does have the same settings, but in multiple themes it does not. I recently discovered that there is something called a theme engine, and I guess I need to trick the theme engine into thinking that it is drawing a GtkTreeView button. Is there a way to do that? If the method would be engine-dependent, I need it to work on MS Windows. That is exactly what the code above tries to achieve. I briefly looked at the Windows theme source code and figured that it does things a little different than the theme engine I first looked at. Does using: style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (button), *.GtkTreeView.GtkButton, *.GtkTreeView.GtkButton, G_OBJECT_TYPE (button)); instead of the call to gtk_rc_get_style_by_paths() posted earlier have any effect? regards, -kris. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
Kristian Rietveld wrote: On Mon, Oct 08, 2007 at 03:53:29PM +0200, Bastiaan Veelo wrote: Something like this seems to work for me: button = gtk_button_new_with_label (...); style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (button), *.GtkTreeView.GtkButton, NULL, G_OBJECT_TYPE (button)); gtk_widget_set_style (button, style); Thank you for replying. However, for me the above has no visible effect. Now I understand that a GtkStyle is just about colors and similar settings, which only partly determine the looks of a widget. In my case I suspect that a GtkTreeView.GtkButton has the same GtkStyle settings as ordinary buttons, which is why I see no change. By default it does have the same settings, but in multiple themes it does not. I recently discovered that there is something called a theme engine, and I guess I need to trick the theme engine into thinking that it is drawing a GtkTreeView button. Is there a way to do that? If the method would be engine-dependent, I need it to work on MS Windows. That is exactly what the code above tries to achieve. I briefly looked at the Windows theme source code and figured that it does things a little different than the theme engine I first looked at. Does using: style = gtk_rc_get_style_by_paths (gtk_widget_get_settings (button), *.GtkTreeView.GtkButton, *.GtkTreeView.GtkButton, G_OBJECT_TYPE (button)); instead of the call to gtk_rc_get_style_by_paths() posted earlier have any effect? No, it does not. Could it be that the style is overwritten as per http://library.gnome.org/devel/gtk/stable/GtkWidget.html#gtk-widget-set-style? Bastiaan. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
I looked at modules/engines/ms-windows/msw_style.c, line 855, and tried the following, without succes: gchar* class_path = NULL; gtk_widget_class_path(button, NULL, class_path, NULL); gchar buf[1024]; g_snprintf (buf, sizeof(buf), widget_class \%s\ style \msw-header-button\\n, class_path ); gtk_rc_parse_string (buf); ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
Hi, I have done some more experimenting with styles, attached, and my confusion has only grown bigger. See comments in the source. I still cannot get an ordinary button to look like a tree view title... Should I go ask on gtk-devel? Regards, Bastiaan. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
One more try with attachments. Bastiaan Veelo wrote: I have done some more experimenting with styles, attached, and my confusion has only grown bigger. See comments in the source. I still cannot get an ordinary button to look like a tree view title... ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How to make a button look like a treeview column title? [Was: How to use the treeview column title style for a button?]
#include gtk/gtk.h
int main( int argc,
char *argv[] )
{
gtk_init (argc, argv);
GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, destroy,
G_CALLBACK (gtk_widget_destroyed), window);
GtkWidget *vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
GtkListStore *store = gtk_list_store_new (1, G_TYPE_STRING);
GtkCellRenderer *renderer = gtk_cell_renderer_text_new ();
GtkTreeViewColumn *column0 =
gtk_tree_view_column_new_with_attributes (TreeViewButton,
renderer,
text,
0,
NULL);
GtkWidget *treeview = gtk_tree_view_new_with_model
(GTK_TREE_MODEL(store));
gtk_tree_view_append_column (GTK_TREE_VIEW(treeview), column0);
gtk_box_pack_start_defaults (GTK_BOX (vbox), treeview);
GtkWidget *button = gtk_button_new_with_label( Ordinary button );
gtk_box_pack_start_defaults( GTK_BOX( vbox ), button );
/* Almost the same as ordinary button. Under Windows the focus frame
is few pixels
narrower than on an ordinary button. Under Kubuntu the button is
slightly broader
than an ordinary button but has no prelight. Anyway it does not look
like a
TreeView button at all. */
GtkWidget *title1 = gtk_button_new_with_label( style by path
*.GtkTreeView.GtkButton );
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title1 );
GtkStyle *style = gtk_rc_get_style_by_paths (gtk_widget_get_settings
(title1),
*.GtkTreeView.GtkButton,
*.GtkTreeView.GtkButton,
G_OBJECT_TYPE (title1));
gtk_widget_set_style (title1, style);
/* Set to its own style. This has the surprising effect that the
button seems
to fall back to its default GTK style. */
GtkWidget *title2 = gtk_button_new_with_label( Set to its own style );
GtkStyle *style2 = gtk_widget_get_style(title2);
gtk_widget_set_style (title2, style2);
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title2 );
/* Copy the style from title1 which we have previously set. This works
as expected,
so why did the style on title2 not work? */
GtkWidget *title2a = gtk_button_new_with_label( Set to style title1 );
GtkStyle *style2a = gtk_widget_get_style(title1);
gtk_widget_set_style (title2a, style2a);
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title2a );
/* Set the style from a totally different widget. The button seems to
fall back
to GTK style, same as when trying to set to its own style. */
GtkWidget *title3 = gtk_button_new_with_label( Set to window style );
GtkStyle *style3 = gtk_widget_get_style(window);
gtk_widget_set_style (title3, style3);
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title3 );
/* This works as expected. */
GtkWidget *title4 = gtk_button_new_with_label( gtk_widget_set_style()
button );
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title4 );
GtkStyle *style4 = gtk_rc_get_style_by_paths (gtk_widget_get_settings
(title4),
*Button,
*Button,
G_OBJECT_TYPE (title4));
gtk_widget_set_style (title4, style4);
/* Try a path like msw_style.c uses it. This looks exactly as an
ordinary button. */
GtkWidget *title5 = gtk_button_new_with_label( style by path
*Treeview*Button* );
gtk_box_pack_start_defaults( GTK_BOX( vbox ), title5 );
GtkStyle *style5 = gtk_rc_get_style_by_paths (gtk_widget_get_settings
(title5),
*Treeview*Button*,
*Treeview*Button*,
G_OBJECT_TYPE (title5));
gtk_widget_set_style (title5, style5);
/* Under Windows this looks like title1. Under Kubuntu it does too,
but with prelight. */
GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
gtk_box_pack_start_defaults( GTK_BOX( vbox ), hbox );
GtkWidget *title6 = gtk_button_new_with_label (msw-header-button);
gtk_box_pack_start_defaults (GTK_BOX( hbox ), title6);
gchar* class_path = NULL;
gtk_widget_class_path(title6, NULL, class_path, NULL);
g_debug(button class path = %s, class_path);
gchar buf[1024];
g_snprintf (buf, sizeof(buf),
widget_class \%s\ style \msw-header-button\\n,
class_path );
g_debug(%s, buf);
gtk_rc_parse_string (buf);
gtk_widget_show_all(window);
gtk_main ();
return 0;
}
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