re: re: tuning widgets base size

2009-03-03 Thread Garth's KidStuff 
 A pointer to the context's default font description. This value must not
be modified or freed

Well, yes.  I interpreted this as meaning that I shouldn't modify the
pointer itself.

And yes -- the solution I gave was gtkmm.  Glad you found the gtk solution.
I should point out that one thing that tripped me up for a bit was figuring
out where the Gtk::Label object was for arbitrary controls -- i.e. you have
to dig into the control to get to the label.

Happy programming!

-- 
Garth Upshaw
Garth's KidStuff
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re: tuning widgets base size

2009-03-02 Thread Garth's KidStuff 
 But this doesn't work. What is the right solution of my problem? Finaly I
want make widgets smaller than default widgets, like
 toolbox widgets in The GIMP.


void LXDialog::ShrinkWidgetFont(
Gtk::Widget* pCtrl, // [in] Control to shrink the text of
real scale) // [in] scale factor (should be  1.0 to shrink control)
{
// Different kinds of controls need different sub-objects' font resized
Gtk::Frame* pFrame = dynamic_castGtk::Frame*(pCtrl);
if (NULL != pFrame) // e.g. Frames have label widgets they use to
display their text
pCtrl = pFrame-get_label_widget();
else
{ // ...and radio buttons and check buttons are simply containers with a
single label child
Gtk::Bin* pBin = dynamic_castGtk::Bin*(pCtrl);
if (NULL != pBin)
pCtrl = pBin-get_child();
}

Gtk::Label* pLabel = dynamic_castGtk::Label*(pCtrl);
if (NULL != pLabel)
{ // Other controls might not have a label whose font we need to set
Glib::RefPtrPango::Context pPangoContext =
pLabel-get_pango_context();
Pango::FontDescription fontD =
pPangoContext-get_font_description();
fontD.set_size((int)(scale * fontD.get_size()));
pLabel-modify_font(fontD);
}

-- 
Garth Upshaw
Garth's KidStuff
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Re: tuning widgets base size

2009-03-02 Thread Alexander 
On Monday 02 March 2009, Garth's KidStuff wrote:
  But this doesn't work. What is the right solution of my problem? Finaly I
 want make widgets smaller than default widgets, like
  toolbox widgets in The GIMP.
 
 
 void LXDialog::ShrinkWidgetFont(
 Gtk::Widget* pCtrl, // [in] Control to shrink the text of
 real scale) // [in] scale factor (should be  1.0 to shrink control)
 {
 // Different kinds of controls need different sub-objects' font resized
 Gtk::Frame* pFrame = dynamic_castGtk::Frame*(pCtrl);
 if (NULL != pFrame) // e.g. Frames have label widgets they use to
 display their text
 pCtrl = pFrame-get_label_widget();
 else
 { // ...and radio buttons and check buttons are simply containers with a
 single label child
 Gtk::Bin* pBin = dynamic_castGtk::Bin*(pCtrl);
 if (NULL != pBin)
 pCtrl = pBin-get_child();
 }
 
 Gtk::Label* pLabel = dynamic_castGtk::Label*(pCtrl);
 if (NULL != pLabel)
 { // Other controls might not have a label whose font we need to set
 Glib::RefPtrPango::Context pPangoContext =
 pLabel-get_pango_context();
 Pango::FontDescription fontD =
 pPangoContext-get_font_description();
 fontD.set_size((int)(scale * fontD.get_size()));
 pLabel-modify_font(fontD);
 }
 

Thanks, I've already found similar solution for gtk - gtk_widget_modify_font();

BTW, manual gives about get_font_description():

A pointer to the context's default font description. This value must not be 
modified or freed

According to this words object fontD shouldn't be mofified. Am I right?
 


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tuning widgets base size

2009-03-01 Thread Alexander 
Hi, list.

I've noticed many widgets calculate its base size relying on font sizes (font 
size, ascent, descent...) of its pango context. Thus I've tried to change 
PangoFontDescription of widgets in this way just after widget creation:

  context = gtk_widget_get_pango_context ( wg );
  descr1 = pango_context_get_font_description ( context );
  descr2 = pango_font_description_copy(descr1) ;

  int size = pango_font_description_get_size(descr2);

  size  = ( size * 2 ) / 3;

  pango_font_description_set_size(descr2, size);
  pango_context_set_font_description(context, descr2); 

But this doesn't work. What is the right solution of my problem? Finaly I want 
make widgets smaller than default widgets, like toolbox widgets in The GIMP. 

Thanks. 
 
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