ruby-list

  かんだです。

[ruby-list:10037] Re: Ruby/Gtk text widget

TAKAHASHI> 高橋です。

TAKAHASHI> >   昔 Color.new を作ったような気がしたんですけれど、見当たらないです
TAKAHASHI> > ねぇ…。不都合なことでもあったかしら。
TAKAHASHI> >   ではっと、style からもらってこようとしたら、SEGV で落ちた(^^; ちょっ
TAKAHASHI> > と見てみます。
TAKAHASHI> 
TAKAHASHI> よろしくお願いします。

  Gtk::Editable に insert_text は定義されていました。でもちょっとバグあり
だったので修正。Gtk::Text#indert_text は Editable のを使うのと同じみたいな
ので作りませんでした。

  Gtk::Text と Gtk::DrawingArea のサンプルもつけときます。

Attachments (3)

gtktext.rb (602 Bytes, text/x-ruby)

require 'gtk'

window = Gtk::Window.new(Gtk::WINDOW_TOPLEVEL)
window.signal_connect("delete_event") { exit }
window.signal_connect("destroy_event") { exit }
window.realize

box = Gtk::VBox.new(FALSE, 0)
window.add(box)
box.show

$str = "Hello, world."
$text = Gtk::Text.new(Gtk::Adjustment.new(0,0,0,0,0,0),
		      Gtk::Adjustment.new(0,0,0,0,0,0))
box.pack_start($text)
$text.show

button = Gtk::Button.new("append")
box.pack_start(button)
button.show

button.signal_connect("clicked") { |w,e|
  $text.insert_text($str + "\n", $text.get_point)
}


window.show
Gtk::main()

gtkdrawing.rb (1.87 KB, text/x-ruby)

require 'gtk'

class Canvas < Gtk::DrawingArea
  def initialize
    super
    signal_connect("expose_event") { |w,e| expose_event(w,e) }
    signal_connect("configure_event") { |w, e| configure_event(w,e) }
    @buffer = nil
    @bgc = nil
  end

  def expose_event(w,e)
    if ! @buffer.nil?
      rec = e.area
      w.window.draw_pixmap(@bgc, @buffer, rec.x, rec.y,
			   rec.x, rec.y, rec.width, rec.height)
    end
    false
  end

  def clear(b = @buffer)
    return if b.nil?

    g = b.get_geometry
    @bgc = self.style.bg_gc(self.state) if @bgc.nil?
    if (g[2] > 0 && g[3] > 0)
      b.draw_rectangle(@bgc, true, 0,0, g[2], g[3])
    end
  end

  def configure_event(w,e)
    g = w.window.get_geometry
    if (g[2] > 0 && g[3] > 0)
      b = Gdk::Pixmap::new(w.window, g[2], g[3], -1)
      clear(b)
      if not @buffer.nil?
	g = @buffer.get_geometry
	b.draw_pixmap(@bgc, @buffer, 0,0,
		      g[0], g[1], g[2], g[3])
      end
      @buffer = b
    end
    true
  end
end

class A < Canvas
  def initialize
    super
    signal_connect("button_press_event") { |w,e| pressed(w,e) }
    set_events(Gdk::BUTTON_PRESS_MASK)
  end
  def pressed(widget, ev)
    if not @last.nil?
      @buffer.draw_line(widget.style.fg_gc(widget.state),
			@last.x, @last.y, ev.x, ev.y)

      x1,x2 = if (@last.x < ev.x)
	      then [@last.x, ev.x]
	      else [ev.x,    @last.x]
	      end
      y1,y2 = if (@last.y < ev.y)
	    then [@last.y, ev.y]
	    else [ev.y,    @last.y]
	    end
      widget.draw(Gdk::Rectangle.new(x1,y1,x2-x1+1,y2-y1+1))
    end
    @last = nil
    @last = ev
    true
  end
end

window = Gtk::Window.new(Gtk::WINDOW_TOPLEVEL)
window.signal_connect("delete_event") { exit }
window.signal_connect("destroy_event") { exit }
window.realize

canvas = A.new
window.add(canvas)
canvas.show

window.show
Gtk::main()

ruby-gtk.0.13.p1 (5.05 KB, text/x-diff)

diff -cr ruby-gtk-0.13/gtk.c ruby-gtk-0.13-p1/gtk.c
*** ruby-gtk-0.13/gtk.c	Mon Sep 28 05:51:10 1998
--- ruby-gtk-0.13-p1/gtk.c	Wed Oct 14 04:45:17 1998
***************
*** 5020,5036 ****
  }
  
  static VALUE
! edit_insert_text(self, new_text)
!     VALUE self;
  {
!     gint pos;
  
      Check_Type(new_text, T_STRING);
      gtk_editable_insert_text(GTK_EDITABLE(get_widget(self)),
  			     RSTRING(new_text)->ptr,
  			     RSTRING(new_text)->len,
! 			     &pos);
!     return INT2NUM(pos);
  }
  
  static VALUE
--- 5020,5036 ----
  }
  
  static VALUE
! edit_insert_text(self, new_text, pos)
!     VALUE self, new_text, pos;
  {
!     gint p = NUM2INT(pos);
  
      Check_Type(new_text, T_STRING);
      gtk_editable_insert_text(GTK_EDITABLE(get_widget(self)),
  			     RSTRING(new_text)->ptr,
  			     RSTRING(new_text)->len,
! 			     &p);
!     return INT2NUM(p);
  }
  
  static VALUE
***************
*** 5902,5908 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->fg[i]);
  }
  
  static VALUE
--- 5902,5908 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->fg[i]);
  }
  
  static VALUE
***************
*** 5912,5918 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->bg[i]);
  }
  
  static VALUE
--- 5912,5918 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->bg[i]);
  }
  
  static VALUE
***************
*** 5922,5928 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->light[i]);
  }
  
  static VALUE
--- 5922,5928 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->light[i]);
  }
  
  static VALUE
***************
*** 5932,5938 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->dark[i]);
  }
  
  static VALUE
--- 5932,5938 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->dark[i]);
  }
  
  static VALUE
***************
*** 5942,5948 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->mid[i]);
  }
  
  static VALUE
--- 5942,5948 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->mid[i]);
  }
  
  static VALUE
***************
*** 5952,5958 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->text[i]);
  }
  
  static VALUE
--- 5952,5958 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->text[i]);
  }
  
  static VALUE
***************
*** 5962,5968 ****
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(get_gstyle(self)->base[i]);
  }
  
  #define DEFINE_STYLE_SET_COLOR(func, type) \
--- 5962,5968 ----
      int i = NUM2INT(idx);
  
      if (i < 0 || 5 < i) ArgError("state out of range");
!     return make_gdkcolor(&get_gstyle(self)->base[i]);
  }
  
  #define DEFINE_STYLE_SET_COLOR(func, type) \
***************
*** 5995,6007 ****
  static VALUE
  style_black(self)
  {
!     return make_gdkcolor(get_gstyle(self)->black);
  }
  
  static VALUE
  style_white(self)
  {
!     return make_gdkcolor(get_gstyle(self)->white);
  }
  
  static VALUE
--- 5995,6007 ----
  static VALUE
  style_black(self)
  {
!     return make_gdkcolor(&get_gstyle(self)->black);
  }
  
  static VALUE
  style_white(self)
  {
!     return make_gdkcolor(&get_gstyle(self)->white);
  }
  
  static VALUE
***************
*** 7213,7219 ****
  
      /* Editable */
      rb_define_method(gEditable, "select_region", edit_sel_region, 2);
!     rb_define_method(gEditable, "insert_text", edit_insert_text, 3);
      rb_define_method(gEditable, "delete_text", edit_delete_text, 2);
      rb_define_method(gEditable, "get_chars", edit_get_chars, 2);
      rb_define_method(gEditable, "cut_clipboard", edit_cut_clipboard, 1);
--- 7213,7219 ----
  
      /* Editable */
      rb_define_method(gEditable, "select_region", edit_sel_region, 2);
!     rb_define_method(gEditable, "insert_text", edit_insert_text, 2);
      rb_define_method(gEditable, "delete_text", edit_delete_text, 2);
      rb_define_method(gEditable, "get_chars", edit_get_chars, 2);
      rb_define_method(gEditable, "cut_clipboard", edit_cut_clipboard, 1);

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