Re: Treeviews: changing the color of column headers
I've done this in Gtk2. I don't have my laptop and old code handy right now, but from memory: - create a label - set_markup() on the label, and set your colour(s) in there - use TreeViewColumn.set_widget() to override the default label If you can't get it working, post again and I'll go and dig out the old ( perl ) code that I used. Dan On Sun, Jun 14, 2015 at 7:55 AM, Stefan Salewski m...@ssalewski.de wrote: On Sat, 2015-06-13 at 20:43 +0200, Stefan Salewski wrote: On Tue, 2015-06-09 at 08:54 +0200, Juan L. Freniche wrote: I am trying to change the color of the column headers of a treeview, with no sucess at all. It is funny that currently many people try to change default colors of GTK widgets. Of course generally that is not a good idea -- common sense is to give users their default styles. Of course, for special applications that may be OK. For tree view headers, I can remember that I tried to chance something style related, and it worked after I added a custom label widget as header text. See http://www.daa.com.au/pipermail/pygtk/2009-February/016601.html Try using a custom widget for the header using TreeViewColumn.set_widget() Sorry, have not been able to get it working with GTK2. I tried to put a label in a column header and change the color of the label with gtk_widget_modify_bg(label, GTK_STATE_NORMAL, color). But it seems to have no effect. Maybe it would work for GTK3, there we have gtk_widget_override_color(). ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Tracking Gtk2 error messages
Hi All, How do I determine which widget is the cause of errors such as this? Gtk-CRITICAL **: IA__gtk_widget_grab_default: assertion 'gtk_widget_get_can_default (widget)' failed I'm using perl-gtk2 and gtkbuilder. It gives a line number but that's simply where I'm adding the xml file... i.e. $builder-add_from_file ($filename)) which isn't particularly useful. Thanks. -- Ian Chapman. ___ gtk-perl-list mailing list gtk-perl-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-perl-list
Re: Changing background of TextView makes selection invisible
On Sat, 2015-06-13 at 11:03 +0100, Kasper Peeters wrote: I am trying to make the background colour of all TextViews white, Have you followed this page: https://developer.gnome.org/gtk3/stable/TextWidget.html ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: Treeviews: changing the color of column headers
More info:
I copy a small program (derived from some other program found in the
treeview tutorial) and the Makefile. All things that I tried didn't
change the background of the header treeview colum.
What is missing or wrong?
- the program -
#include gtk/gtk.h
enum
{
COL_FIRST = 0,
NUM_COLS
} ;
static GtkTreeModel *create_and_fill_model (void)
{
GtkTreeStore *treestore;
GtkTreeItertoplevel;
treestore = gtk_tree_store_new(NUM_COLS, G_TYPE_STRING);
gtk_tree_store_append(treestore, toplevel, NULL);
gtk_tree_store_set(treestore, toplevel, COL_FIRST, some text, -1);
gtk_tree_store_append(treestore, toplevel, NULL);
gtk_tree_store_set(treestore, toplevel, COL_FIRST, more text, -1);
return GTK_TREE_MODEL(treestore);
}
void set_header (GtkTreeViewColumn *col, char *title)
{ GtkWidget *lab;
lab = gtk_label_new (title);
gtk_tree_view_column_set_widget (col, lab);
gtk_widget_show (lab);
}
void set_color (GtkWidget *w, GdkColor color)
{ /* none work */
gtk_widget_modify_bg (w, GTK_STATE_NORMAL, color);
gtk_widget_modify_base (w, GTK_STATE_NORMAL, color);
gtk_widget_modify_bg (w, GTK_STATE_ACTIVE, color);
gtk_widget_modify_base (w, GTK_STATE_ACTIVE, color);
gtk_widget_modify_bg (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_base (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_bg (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_base (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_bg (w, GTK_STATE_SELECTED,color);
gtk_widget_modify_base (w, GTK_STATE_SELECTED,color);
gtk_widget_modify_bg (w, GTK_STATE_INSENSITIVE, color);
gtk_widget_modify_base (w, GTK_STATE_INSENSITIVE, color);
}
void set_color_header (GtkTreeView *view)
{
GtkTreeViewColumn *col;
GtkWidget *w;
GdkColor color;
gboolean res;
res = gdk_color_parse (red, color);
if (res == 0) return;
col = gtk_tree_view_get_column (view, COL_FIRST);
w = gtk_tree_view_column_get_widget (col); /* the label */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the alignment */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the hbox */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the button */
set_color (w, color); /* NOK */
}
static GtkWidget *create_view_and_model (void)
{
GtkTreeViewColumn *col;
GtkCellRenderer *renderer;
GtkWidget *view;
GtkTreeModel*model;
view = gtk_tree_view_new();
col = gtk_tree_view_column_new();
set_header (col, First Column);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_column_pack_start(col, renderer, TRUE);
gtk_tree_view_column_add_attribute(col, renderer, text, COL_FIRST);
gtk_tree_view_append_column(GTK_TREE_VIEW(view), col);
/* set_color_header(GTK_TREE_VIEW(view)); NOK */
model = create_and_fill_model();
gtk_tree_view_set_model(GTK_TREE_VIEW(view), model);
g_object_unref(model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init(argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 300, 200);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
g_signal_connect(window, delete_event, gtk_main_quit, NULL); /*
dirty */
view = create_view_and_model();
/* set_color_header(GTK_TREE_VIEW(view)); NOK */
gtk_container_add(GTK_CONTAINER(window), view);
gtk_widget_show_all(window);
set_color_header(GTK_TREE_VIEW(view)); /* NOK */
gtk_main();
return 0;
}
the Makefile ---
CC = gcc
CFLAGS = -g -O0 `pkg-config --cflags gtk+-2.0`
all: treeview-demo
treeview-demo: main.o
gcc -o treeview-demo main.o `pkg-config --libs gtk+-2.0` -mwindows
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Changing background of TextView makes selection invisible
I am trying to make the background colour of all TextViews white, using
something along the lines of (this is gtkmm, but the problem is the same
in pure gtk):
Glib::ustring data = GtkTextView { background: white; };
auto css = Gtk::CssProvider::create();
css-load_from_data(data);
auto screen = Gdk::Screen::get_default();
Gtk::StyleContext::add_provider_for_screen(screen,css,GTK_STYLE_PROVIDER_PRIORITY_USER);
This does make the background white, but it also makes the colour used
for selection highlight white. As a result, I can't see anymore what I
am selecting.
A different colour leads to the same result: the highlight colour
becomes the same as the background colour, and hence the selection
becomes invisible. The same also happens when using the
override_background_color(..) function of the widget.
Is this a bug? (this is with gtk-3.10.8). Or am I doing something wrong?
Thanks!
Cheers,
Kasper
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Re: Treeviews: changing the color of column headers
On Tue, 2015-06-09 at 08:54 +0200, Juan L. Freniche wrote: I am trying to change the color of the column headers of a treeview, with no sucess at all. It is funny that currently many people try to change default colors of GTK widgets. Of course generally that is not a good idea -- common sense is to give users their default styles. Of course, for special applications that may be OK. For tree view headers, I can remember that I tried to chance something style related, and it worked after I added a custom label widget as header text. See http://www.daa.com.au/pipermail/pygtk/2009-February/016601.html Try using a custom widget for the header using TreeViewColumn.set_widget() ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
GTK TreeView change the column header color
I am trying to change the color of the column headers of a treeview,
with no sucess at all. I followed the way indicated in an old post in
Nov. 2003:
I tried:
for each column in the treeview:
when defining the column, set_widget (col, label)
now show the widget (i.e., the label).
Then show the treeview.
And now:
for each column in the treeview:
get_widget (col)
get_parent // the alignment
get_parent // the hbox
get_parent // the button
modify bg (button, state normal, some gdk color) // tried
also with modify base
Result: nothing, header columns blank
I also tried in the rc file (still using gtk 2.xx):
style TreeHeaderStyle
{
bg[NORMAL] = blue # tried also with base
}
widget_class *.GtkTreeView.GtkButton style : highest TreeHeaderStyle
Result: nothing, header columns still blank
The global gtkrc is the default one and my particular gtkrc is
# Auto-written by gtk2_prefs. Do not edit.
gtk-theme-name = Nimbus
style user-font
{
font_name=Sans 10
}
widget_class * style user-font
I change the theme to several others and no success.
I know that some years ago the same question was made, I followed the
recommendations given there. No success.
I would appreciate any help. Thanks.
Ah, in Win32.
I am attaching a small program derived from an example in the treeview
tutorial
- the program -
#include gtk/gtk.h
enum
{
COL_FIRST = 0,
NUM_COLS
} ;
static GtkTreeModel *create_and_fill_model (void)
{
GtkTreeStore *treestore;
GtkTreeItertoplevel;
treestore = gtk_tree_store_new(NUM_COLS, G_TYPE_STRING);
gtk_tree_store_append(treestore, toplevel, NULL);
gtk_tree_store_set(treestore, toplevel, COL_FIRST, some text, -1);
gtk_tree_store_append(treestore, toplevel, NULL);
gtk_tree_store_set(treestore, toplevel, COL_FIRST, more text, -1);
return GTK_TREE_MODEL(treestore);
}
void set_header (GtkTreeViewColumn *col, char *title)
{ GtkWidget *lab;
lab = gtk_label_new (title);
gtk_tree_view_column_set_widget (col, lab);
gtk_widget_show (lab);
}
void set_color (GtkWidget *w, GdkColor color)
{ /* none work */
gtk_widget_modify_bg (w, GTK_STATE_NORMAL, color);
gtk_widget_modify_base (w, GTK_STATE_NORMAL, color);
gtk_widget_modify_bg (w, GTK_STATE_ACTIVE, color);
gtk_widget_modify_base (w, GTK_STATE_ACTIVE, color);
gtk_widget_modify_bg (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_base (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_bg (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_base (w, GTK_STATE_PRELIGHT,color);
gtk_widget_modify_bg (w, GTK_STATE_SELECTED,color);
gtk_widget_modify_base (w, GTK_STATE_SELECTED,color);
gtk_widget_modify_bg (w, GTK_STATE_INSENSITIVE, color);
gtk_widget_modify_base (w, GTK_STATE_INSENSITIVE, color);
}
void set_color_header (GtkTreeView *view)
{
GtkTreeViewColumn *col;
GtkWidget *w;
GdkColor color;
gboolean res;
res = gdk_color_parse (red, color);
if (res == 0) return;
col = gtk_tree_view_get_column (view, COL_FIRST);
w = gtk_tree_view_column_get_widget (col); /* the label */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the alignment */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the hbox */
/* set_color (w, color); NOK*/
w = gtk_widget_get_parent (w); /* the button */
set_color (w, color); /* NOK */
}
static GtkWidget *create_view_and_model (void)
{
GtkTreeViewColumn *col;
GtkCellRenderer *renderer;
GtkWidget *view;
GtkTreeModel*model;
view = gtk_tree_view_new();
col = gtk_tree_view_column_new();
set_header (col, First Column);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_column_pack_start(col, renderer, TRUE);
gtk_tree_view_column_add_attribute(col, renderer, text, COL_FIRST);
gtk_tree_view_append_column(GTK_TREE_VIEW(view), col);
/* set_color_header(GTK_TREE_VIEW(view)); NOK */
model = create_and_fill_model();
gtk_tree_view_set_model(GTK_TREE_VIEW(view), model);
g_object_unref(model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init(argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 300, 200);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
g_signal_connect(window, delete_event, gtk_main_quit, NULL); /*
dirty */
view = create_view_and_model();
/* set_color_header(GTK_TREE_VIEW(view)); NOK */
gtk_container_add(GTK_CONTAINER(window), view);
gtk_widget_show_all(window);
set_color_header(GTK_TREE_VIEW(view)); /* NOK */
gtk_main();
return 0;
}
the Makefile ---
CC = gcc
CFLAGS = -g -O0 `pkg-config --cflags gtk+-2.0`
all: treeview-demo
treeview-demo: main.o
Re: Treeviews: changing the color of column headers
On Sat, 2015-06-13 at 20:43 +0200, Stefan Salewski wrote: On Tue, 2015-06-09 at 08:54 +0200, Juan L. Freniche wrote: I am trying to change the color of the column headers of a treeview, with no sucess at all. It is funny that currently many people try to change default colors of GTK widgets. Of course generally that is not a good idea -- common sense is to give users their default styles. Of course, for special applications that may be OK. For tree view headers, I can remember that I tried to chance something style related, and it worked after I added a custom label widget as header text. See http://www.daa.com.au/pipermail/pygtk/2009-February/016601.html Try using a custom widget for the header using TreeViewColumn.set_widget() Sorry, have not been able to get it working with GTK2. I tried to put a label in a column header and change the color of the label with gtk_widget_modify_bg(label, GTK_STATE_NORMAL, color). But it seems to have no effect. Maybe it would work for GTK3, there we have gtk_widget_override_color(). ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
