Gtk::TextBuffer colorful


#1

Hello,

is there any way to bring some color into the Gtk::TextView for some
lines?

example:
this line is black
this line is black
this line is red
this line is black

I use the Gtk::TextBuffer.insert_at_cursor(text) function, because I
generate a lot of lines dynamically.

@textv_w = @glade.get_widget(“textview1”)
@buf = @textv_w.buffer

but if I like to change the color …

def text_color(color)
#Gdk::flush
@textv_w.modify_text(Gtk::STATE_NORMAL, Gdk::Color.parse(color))
@buf= @textv_w.buffer
end

@buf.insert_at_cursor(“this should be black”)
text_color(“red”)
@buf.insert_at_cursor(“this should be red”)
text_color(“black”)
@buf.insert_at_cursor(“this should be black again”)

… the whole thing is black.

I even tried to use the TextBuffer.text=(text) function.
Gdk::flush does not work at all.
Is there any way to flush the buffer before changing the color like
$stdout.flush?

Thanks!

Karl


#2

Le jeudi 15 mars 2007 01:02, Karl Gabel a écrit :

#Gdk::flush

Karl
Hello,

For changing the color of a text (as well as the font, size, and so on),
I
remember I used a markup system, for GtkLabels. I cannot find a
reference to
markups in the doc for TextBuffer, but tags may be what you are looking
for :

TextBuffer#insert(iter, text, tag1, tag2, tag3, …)
Inserts text into buffer at iter, applying an array of tags to the
newly-inserted text. Equivalent to calling Gtk::TextBuffer#insert(iter,
text), then Gtk::TextBuffer#apply_tag on the inserted text.

These tags are instances of class Gtk::TextTag, used to set the colors
(foreground and background), size, font, style, …

I haven’t tried yet, so tell us if this works for you !


#3

Olivier R. schrieb:

this line is black

text_color(“black”)
Thanks!
TextBuffer#insert(iter, text, tag1, tag2, tag3, …)
Inserts text into buffer at iter, applying an array of tags to the
newly-inserted text. Equivalent to calling Gtk::TextBuffer#insert(iter,
text), then Gtk::TextBuffer#apply_tag on the inserted text.

These tags are instances of class Gtk::TextTag, used to set the colors
(foreground and background), size, font, style, …

I haven’t tried yet, so tell us if this works for you !

Hello again,

this works really nice

@buf.create_tag(“tag”,{“foreground”=>“red”} )

@buf.insert_at_cursor(“this line is still black”)
start = @buf.get_iter_at_offset(@buf.end_iter.offset)
@buf.insert(start, “this line is red”, “tag”)
@buf.apply_tag(“tag”,start, @buf.end_iter)
@buf.insert_at_cursor(“this line is still black”)

Thanks again!

Karl