1014 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			1014 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
#include "config.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <gtk/gtk.h>
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#include <glib/gstdio.h>
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#include "demos.h"
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static GtkTextBuffer *info_buffer;
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static GtkTextBuffer *source_buffer;
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static gchar *current_file = NULL;
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enum {
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  TITLE_COLUMN,
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  FILENAME_COLUMN,
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  FUNC_COLUMN,
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  STYLE_COLUMN,
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  NUM_COLUMNS
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};
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typedef struct _CallbackData CallbackData;
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struct _CallbackData
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{
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  GtkTreeModel *model;
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  GtkTreePath *path;
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};
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#ifdef G_OS_WIN32
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#undef DEMOCODEDIR
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static char *
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get_democodedir (void)
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{
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						|
  static char *result = NULL;
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						|
  if (result == NULL)
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    {
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      result = g_win32_get_package_installation_directory_of_module (NULL);
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						|
      if (result == NULL)
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	result = "unknown-location";
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						|
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      result = g_strconcat (result, "\\share\\gtk-2.0\\demo", NULL);
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    }
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						|
  return result;
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}
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#define DEMOCODEDIR get_democodedir ()
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#endif
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/**
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						|
 * demo_find_file:
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						|
 * @base: base filename
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 * @err:  location to store error, or %NULL.
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 * 
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						|
 * Looks for @base first in the current directory, then in the
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 * location GTK+ where it will be installed on make install,
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 * returns the first file found.
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 * 
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 * Return value: the filename, if found or %NULL
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 **/
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gchar *
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demo_find_file (const char *base,
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		GError    **err)
 | 
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{
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						|
  g_return_val_if_fail (err == NULL || *err == NULL, NULL);
 | 
						|
  
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  if (g_file_test ("gtk-logo-rgb.gif", G_FILE_TEST_EXISTS) &&
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      g_file_test (base, G_FILE_TEST_EXISTS))
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    return g_strdup (base);
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  else
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    {
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      char *filename = g_build_filename (DEMOCODEDIR, base, NULL);
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      if (!g_file_test (filename, G_FILE_TEST_EXISTS))
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	{
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	  g_set_error (err, G_FILE_ERROR, G_FILE_ERROR_NOENT,
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		       "Cannot find demo data file \"%s\"", base);
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	  g_free (filename);
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	  return NULL;
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	}
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      return filename;
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    }
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}
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static void
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window_closed_cb (GtkWidget *window, gpointer data)
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{
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  CallbackData *cbdata = data;
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  GtkTreeIter iter;
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  PangoStyle style;
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  gtk_tree_model_get_iter (cbdata->model, &iter, cbdata->path);
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  gtk_tree_model_get (GTK_TREE_MODEL (cbdata->model), &iter,
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		      STYLE_COLUMN, &style,
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		      -1);
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						|
  if (style == PANGO_STYLE_ITALIC)
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    gtk_tree_store_set (GTK_TREE_STORE (cbdata->model), &iter,
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			STYLE_COLUMN, PANGO_STYLE_NORMAL,
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			-1);
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  gtk_tree_path_free (cbdata->path);
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  g_free (cbdata);
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}
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gboolean
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read_line (FILE *stream, GString *str)
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{
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						|
  int n_read = 0;
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#ifdef HAVE_FLOCKFILE
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  flockfile (stream);
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#endif
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  g_string_truncate (str, 0);
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						|
  
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						|
  while (1)
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    {
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						|
      int c;
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						|
      
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#ifdef HAVE_FLOCKFILE
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      c = getc_unlocked (stream);
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#else
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      c = getc (stream);
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#endif
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      if (c == EOF)
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	goto done;
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      else
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	n_read++;
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						|
      switch (c)
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	{
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						|
	case '\r':
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						|
	case '\n':
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	  {
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#ifdef HAVE_FLOCKFILE
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	    int next_c = getc_unlocked (stream);
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#else
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	    int next_c = getc (stream);
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#endif
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	    if (!(next_c == EOF ||
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		  (c == '\r' && next_c == '\n') ||
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		  (c == '\n' && next_c == '\r')))
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						|
	      ungetc (next_c, stream);
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						|
	    
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	    goto done;
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						|
	  }
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	default:
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	  g_string_append_c (str, c);
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	}
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    }
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 done:
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#ifdef HAVE_FLOCKFILE
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  funlockfile (stream);
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#endif
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  return n_read > 0;
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}
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/* Stupid syntax highlighting.
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 *
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 * No regex was used in the making of this highlighting.
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 * It should only work for simple cases.  This is good, as
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 * that's all we should have in the demos.
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 */
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/* This code should not be used elsewhere, except perhaps as an example of how
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 * to iterate through a text buffer.
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 */
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enum {
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  STATE_NORMAL,
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  STATE_IN_COMMENT
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};
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static gchar *tokens[] =
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{
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  "/*",
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  "\"",
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  NULL
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};
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static gchar *types[] =
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{
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  "static",
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  "const ",
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  "void",
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  "gint",
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  " int ",
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  " char ",
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  "gchar ",
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  "gfloat",
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  "float",
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  "double",
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  "gint8",
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  "gint16",
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  "gint32",
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  "guint",
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						|
  "guint8",
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  "guint16",
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  "guint32",
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  "guchar",
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						|
  "glong",
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						|
  "gboolean" ,
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  "gshort",
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						|
  "gushort",
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  "gulong",
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						|
  "gdouble",
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  "gldouble",
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						|
  "gpointer",
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  "NULL",
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						|
  "GList",
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						|
  "GSList",
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  "FALSE",
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						|
  "TRUE",
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  "FILE ",
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						|
  "GtkObject ",
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						|
  "GtkColorSelection ",
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						|
  "GtkWidget ",
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						|
  "GtkButton ",
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						|
  "GdkColor ",
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						|
  "GdkRectangle ",
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						|
  "GdkEventExpose ",
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						|
  "GdkGC ",
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						|
  "GdkPixbufLoader ",
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						|
  "GdkPixbuf ",
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  "GError",
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						|
  "size_t",
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  "GtkAboutDialog ",
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  "GtkAction ",
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  "GtkActionEntry ",
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						|
  "GtkRadioActionEntry ",
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						|
  "GtkIconFactory ",
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  "GtkStockItem ",
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  "GtkIconSet ",
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						|
  "GtkTextBuffer ",
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  "GtkStatusbar ",
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  "GtkTextIter ",
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  "GtkTextMark ",
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  "GdkEventWindowState ",
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						|
  "GtkActionGroup ",
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						|
  "GtkUIManager ",
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						|
  "GtkRadioAction ",
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						|
  "GtkActionClass ",
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  "GtkToggleActionEntry ",
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						|
  "GtkAssistant ",
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						|
  "GtkBuilder ",
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						|
  "GtkSizeGroup ",
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						|
  "GtkTreeModel ",
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						|
  "GtkTreeSelection ",
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						|
  "GdkDisplay ",
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						|
  "GdkScreen ",
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						|
  "GdkWindow ",
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						|
  "GdkEventButton ",
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						|
  "GdkCursor ",
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						|
  "GtkTreeIter ",
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						|
  "GtkTreeViewColumn ",
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  "GdkDisplayManager ",
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  "GtkClipboard ",
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  "GtkIconSize ",
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						|
  "GtkImage ",
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						|
  "GdkDragContext ",
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						|
  "GtkSelectionData ",
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						|
  "GtkDialog ",
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						|
  "GtkMenuItem ",
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						|
  "GtkListStore ",
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						|
  "GtkCellLayout ",
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						|
  "GtkCellRenderer ",
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						|
  "GtkTreePath ",
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						|
  "GtkTreeStore ",
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						|
  "GtkEntry ",
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						|
  "GtkEditable ",
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						|
  "GtkEditableInterface ",
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						|
  "GdkPixmap ",
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						|
  "GdkEventConfigure ",
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						|
  "GdkEventMotion ",
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						|
  "GdkModifierType ",
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						|
  "GtkEntryCompletion ",
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						|
  "GtkToolItem ",
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						|
  "GDir ",
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						|
  "GtkIconView ",
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						|
  "GtkCellRendererText ",
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						|
  "GtkContainer ",
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						|
  "GtkAccelGroup ",
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						|
  "GtkPaned ",
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						|
  "GtkPrintOperation ",
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						|
  "GtkPrintContext ",
 | 
						|
  "cairo_t ",
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						|
  "PangoLayout "
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						|
  "PangoFontDescription ",
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						|
  "PangoRenderer ",
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						|
  "PangoMatrix ",
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						|
  "PangoContext ",
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						|
  "PangoLayout ",
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						|
  "GtkTable ",
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						|
  "GtkToggleButton ",
 | 
						|
  "GString ",
 | 
						|
  "GtkIconSize ",
 | 
						|
  "GtkTreeView ",
 | 
						|
  "GtkTextTag ",
 | 
						|
  "GdkEvent ",
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						|
  "GdkEventKey ",
 | 
						|
  "GtkTextView ",
 | 
						|
  "GdkEventVisibility ",
 | 
						|
  "GdkBitmap ",
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						|
  "GtkTextChildAnchor ",
 | 
						|
  "GArray ",
 | 
						|
  "GtkCellEditable ",
 | 
						|
  "GtkCellRendererToggle ",
 | 
						|
  NULL
 | 
						|
};
 | 
						|
 | 
						|
static gchar *control[] =
 | 
						|
{
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						|
  " if ",
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						|
  " while ",
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						|
  " else",
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						|
  " do ",
 | 
						|
  " for ",
 | 
						|
  "?",
 | 
						|
  ":",
 | 
						|
  "return ",
 | 
						|
  "goto ",
 | 
						|
  NULL
 | 
						|
};
 | 
						|
void
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parse_chars (gchar     *text,
 | 
						|
	     gchar    **end_ptr,
 | 
						|
	     gint      *state,
 | 
						|
	     gchar    **tag,
 | 
						|
	     gboolean   start)
 | 
						|
{
 | 
						|
  gint i;
 | 
						|
  gchar *next_token;
 | 
						|
 | 
						|
  /* Handle comments first */
 | 
						|
  if (*state == STATE_IN_COMMENT)
 | 
						|
    {
 | 
						|
      *end_ptr = strstr (text, "*/");
 | 
						|
      if (*end_ptr)
 | 
						|
	{
 | 
						|
	  *end_ptr += 2;
 | 
						|
	  *state = STATE_NORMAL;
 | 
						|
	  *tag = "comment";
 | 
						|
	}
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  *tag = NULL;
 | 
						|
  *end_ptr = NULL;
 | 
						|
 | 
						|
  /* check for comment */
 | 
						|
  if (!strncmp (text, "/*", 2))
 | 
						|
    {
 | 
						|
      *end_ptr = strstr (text, "*/");
 | 
						|
      if (*end_ptr)
 | 
						|
	*end_ptr += 2;
 | 
						|
      else
 | 
						|
	*state = STATE_IN_COMMENT;
 | 
						|
      *tag = "comment";
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  /* check for preprocessor defines */
 | 
						|
  if (*text == '#' && start)
 | 
						|
    {
 | 
						|
      *end_ptr = NULL;
 | 
						|
      *tag = "preprocessor";
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  /* functions */
 | 
						|
  if (start && * text != '\t' && *text != ' ' && *text != '{' && *text != '}')
 | 
						|
    {
 | 
						|
      if (strstr (text, "("))
 | 
						|
	{
 | 
						|
	  *end_ptr = strstr (text, "(");
 | 
						|
	  *tag = "function";
 | 
						|
	  return;
 | 
						|
	}
 | 
						|
    }
 | 
						|
  /* check for types */
 | 
						|
  for (i = 0; types[i] != NULL; i++)
 | 
						|
    if (!strncmp (text, types[i], strlen (types[i])) ||
 | 
						|
        (start && types[i][0] == ' ' && !strncmp (text, types[i] + 1, strlen (types[i]) - 1)))
 | 
						|
      {
 | 
						|
	*end_ptr = text + strlen (types[i]);
 | 
						|
	*tag = "type";
 | 
						|
	return;
 | 
						|
      }
 | 
						|
 | 
						|
  /* check for control */
 | 
						|
  for (i = 0; control[i] != NULL; i++)
 | 
						|
    if (!strncmp (text, control[i], strlen (control[i])))
 | 
						|
      {
 | 
						|
	*end_ptr = text + strlen (control[i]);
 | 
						|
	*tag = "control";
 | 
						|
	return;
 | 
						|
      }
 | 
						|
 | 
						|
  /* check for string */
 | 
						|
  if (text[0] == '"')
 | 
						|
    {
 | 
						|
      gint maybe_escape = FALSE;
 | 
						|
 | 
						|
      *end_ptr = text + 1;
 | 
						|
      *tag = "string";
 | 
						|
      while (**end_ptr != '\000')
 | 
						|
	{
 | 
						|
	  if (**end_ptr == '\"' && !maybe_escape)
 | 
						|
	    {
 | 
						|
	      *end_ptr += 1;
 | 
						|
	      return;
 | 
						|
	    }
 | 
						|
	  if (**end_ptr == '\\')
 | 
						|
	    maybe_escape = TRUE;
 | 
						|
	  else
 | 
						|
	    maybe_escape = FALSE;
 | 
						|
	  *end_ptr += 1;
 | 
						|
	}
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  /* not at the start of a tag.  Find the next one. */
 | 
						|
  for (i = 0; tokens[i] != NULL; i++)
 | 
						|
    {
 | 
						|
      next_token = strstr (text, tokens[i]);
 | 
						|
      if (next_token)
 | 
						|
	{
 | 
						|
	  if (*end_ptr)
 | 
						|
	    *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
 | 
						|
	  else
 | 
						|
	    *end_ptr = next_token;
 | 
						|
	}
 | 
						|
    }
 | 
						|
 | 
						|
  for (i = 0; types[i] != NULL; i++)
 | 
						|
    {
 | 
						|
      next_token = strstr (text, types[i]);
 | 
						|
      if (next_token)
 | 
						|
	{
 | 
						|
	  if (*end_ptr)
 | 
						|
	    *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
 | 
						|
	  else
 | 
						|
	    *end_ptr = next_token;
 | 
						|
	}
 | 
						|
    }
 | 
						|
 | 
						|
  for (i = 0; control[i] != NULL; i++)
 | 
						|
    {
 | 
						|
      next_token = strstr (text, control[i]);
 | 
						|
      if (next_token)
 | 
						|
	{
 | 
						|
	  if (*end_ptr)
 | 
						|
	    *end_ptr = (*end_ptr<next_token)?*end_ptr:next_token;
 | 
						|
	  else
 | 
						|
	    *end_ptr = next_token;
 | 
						|
	}
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
/* While not as cool as c-mode, this will do as a quick attempt at highlighting */
 | 
						|
static void
 | 
						|
fontify (void)
 | 
						|
{
 | 
						|
  GtkTextIter start_iter, next_iter, tmp_iter;
 | 
						|
  gint state;
 | 
						|
  gchar *text;
 | 
						|
  gchar *start_ptr, *end_ptr;
 | 
						|
  gchar *tag;
 | 
						|
 | 
						|
  state = STATE_NORMAL;
 | 
						|
 | 
						|
  gtk_text_buffer_get_iter_at_offset (source_buffer, &start_iter, 0);
 | 
						|
 | 
						|
  next_iter = start_iter;
 | 
						|
  while (gtk_text_iter_forward_line (&next_iter))
 | 
						|
    {
 | 
						|
      gboolean start = TRUE;
 | 
						|
      start_ptr = text = gtk_text_iter_get_text (&start_iter, &next_iter);
 | 
						|
 | 
						|
      do
 | 
						|
	{
 | 
						|
	  parse_chars (start_ptr, &end_ptr, &state, &tag, start);
 | 
						|
 | 
						|
	  start = FALSE;
 | 
						|
	  if (end_ptr)
 | 
						|
	    {
 | 
						|
	      tmp_iter = start_iter;
 | 
						|
	      gtk_text_iter_forward_chars (&tmp_iter, end_ptr - start_ptr);
 | 
						|
	    }
 | 
						|
	  else
 | 
						|
	    {
 | 
						|
	      tmp_iter = next_iter;
 | 
						|
	    }
 | 
						|
	  if (tag)
 | 
						|
	    gtk_text_buffer_apply_tag_by_name (source_buffer, tag, &start_iter, &tmp_iter);
 | 
						|
 | 
						|
	  start_iter = tmp_iter;
 | 
						|
	  start_ptr = end_ptr;
 | 
						|
	}
 | 
						|
      while (end_ptr);
 | 
						|
 | 
						|
      g_free (text);
 | 
						|
      start_iter = next_iter;
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
load_file (const gchar *filename)
 | 
						|
{
 | 
						|
  FILE *file;
 | 
						|
  GtkTextIter start, end;
 | 
						|
  char *full_filename;
 | 
						|
  GError *err = NULL;
 | 
						|
  GString *buffer = g_string_new (NULL);
 | 
						|
  int state = 0;
 | 
						|
  gboolean in_para = 0;
 | 
						|
 | 
						|
  if (current_file && !strcmp (current_file, filename))
 | 
						|
    {
 | 
						|
      g_string_free (buffer, TRUE);
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  g_free (current_file);
 | 
						|
  current_file = g_strdup (filename);
 | 
						|
  
 | 
						|
  gtk_text_buffer_get_bounds (info_buffer, &start, &end);
 | 
						|
  gtk_text_buffer_delete (info_buffer, &start, &end);
 | 
						|
 | 
						|
  gtk_text_buffer_get_bounds (source_buffer, &start, &end);
 | 
						|
  gtk_text_buffer_delete (source_buffer, &start, &end);
 | 
						|
 | 
						|
  full_filename = demo_find_file (filename, &err);
 | 
						|
  if (!full_filename)
 | 
						|
    {
 | 
						|
      g_warning ("%s", err->message);
 | 
						|
      g_error_free (err);
 | 
						|
      return;
 | 
						|
    }
 | 
						|
 | 
						|
  file = g_fopen (full_filename, "r");
 | 
						|
 | 
						|
  if (!file)
 | 
						|
    g_warning ("Cannot open %s: %s\n", full_filename, g_strerror (errno));
 | 
						|
 | 
						|
  g_free (full_filename);
 | 
						|
 | 
						|
  if (!file)
 | 
						|
    return;
 | 
						|
 | 
						|
  gtk_text_buffer_get_iter_at_offset (info_buffer, &start, 0);
 | 
						|
  while (read_line (file, buffer))
 | 
						|
    {
 | 
						|
      gchar *p = buffer->str;
 | 
						|
      gchar *q;
 | 
						|
      gchar *r;
 | 
						|
      
 | 
						|
      switch (state)
 | 
						|
	{
 | 
						|
	case 0:
 | 
						|
	  /* Reading title */
 | 
						|
	  while (*p == '/' || *p == '*' || g_ascii_isspace (*p))
 | 
						|
	    p++;
 | 
						|
	  r = p;
 | 
						|
	  while (*r != '/' && strlen (r))
 | 
						|
	    r++;
 | 
						|
	  if (strlen (r) > 0)
 | 
						|
	    p = r + 1;
 | 
						|
	  q = p + strlen (p);
 | 
						|
	  while (q > p && g_ascii_isspace (*(q - 1)))
 | 
						|
	    q--;
 | 
						|
 | 
						|
	  if (q > p)
 | 
						|
	    {
 | 
						|
	      int len_chars = g_utf8_pointer_to_offset (p, q);
 | 
						|
 | 
						|
	      end = start;
 | 
						|
 | 
						|
	      g_assert (strlen (p) >= q - p);
 | 
						|
	      gtk_text_buffer_insert (info_buffer, &end, p, q - p);
 | 
						|
	      start = end;
 | 
						|
 | 
						|
	      gtk_text_iter_backward_chars (&start, len_chars);
 | 
						|
	      gtk_text_buffer_apply_tag_by_name (info_buffer, "title", &start, &end);
 | 
						|
 | 
						|
	      start = end;
 | 
						|
	      
 | 
						|
	      state++;
 | 
						|
	    }
 | 
						|
	  break;
 | 
						|
	    
 | 
						|
	case 1:
 | 
						|
	  /* Reading body of info section */
 | 
						|
	  while (g_ascii_isspace (*p))
 | 
						|
	    p++;
 | 
						|
	  if (*p == '*' && *(p + 1) == '/')
 | 
						|
	    {
 | 
						|
	      gtk_text_buffer_get_iter_at_offset (source_buffer, &start, 0);
 | 
						|
	      state++;
 | 
						|
	    }
 | 
						|
	  else
 | 
						|
	    {
 | 
						|
	      int len;
 | 
						|
	      
 | 
						|
	      while (*p == '*' || g_ascii_isspace (*p))
 | 
						|
		p++;
 | 
						|
 | 
						|
	      len = strlen (p);
 | 
						|
	      while (g_ascii_isspace (*(p + len - 1)))
 | 
						|
		len--;
 | 
						|
	      
 | 
						|
	      if (len > 0)
 | 
						|
		{
 | 
						|
		  if (in_para)
 | 
						|
		    gtk_text_buffer_insert (info_buffer, &start, " ", 1);
 | 
						|
 | 
						|
		  g_assert (strlen (p) >= len);
 | 
						|
		  gtk_text_buffer_insert (info_buffer, &start, p, len);
 | 
						|
		  in_para = 1;
 | 
						|
		}
 | 
						|
	      else
 | 
						|
		{
 | 
						|
		  gtk_text_buffer_insert (info_buffer, &start, "\n", 1);
 | 
						|
		  in_para = 0;
 | 
						|
		}
 | 
						|
	    }
 | 
						|
	  break;
 | 
						|
 | 
						|
	case 2:
 | 
						|
	  /* Skipping blank lines */
 | 
						|
	  while (g_ascii_isspace (*p))
 | 
						|
	    p++;
 | 
						|
	  if (*p)
 | 
						|
	    {
 | 
						|
	      p = buffer->str;
 | 
						|
	      state++;
 | 
						|
	      /* Fall through */
 | 
						|
	    }
 | 
						|
	  else
 | 
						|
	    break;
 | 
						|
	  
 | 
						|
	case 3:
 | 
						|
	  /* Reading program body */
 | 
						|
	  gtk_text_buffer_insert (source_buffer, &start, p, -1);
 | 
						|
	  gtk_text_buffer_insert (source_buffer, &start, "\n", 1);
 | 
						|
	  break;
 | 
						|
	}
 | 
						|
    }
 | 
						|
 | 
						|
  fclose (file);
 | 
						|
  
 | 
						|
  fontify ();
 | 
						|
 | 
						|
  g_string_free (buffer, TRUE);
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
row_activated_cb (GtkTreeView       *tree_view,
 | 
						|
                  GtkTreePath       *path,
 | 
						|
		  GtkTreeViewColumn *column)
 | 
						|
{
 | 
						|
  GtkTreeIter iter;
 | 
						|
  PangoStyle style;
 | 
						|
  GDoDemoFunc func;
 | 
						|
  GtkWidget *window;
 | 
						|
  GtkTreeModel *model;
 | 
						|
 | 
						|
  model = gtk_tree_view_get_model (tree_view);
 | 
						|
  
 | 
						|
  gtk_tree_model_get_iter (model, &iter, path);
 | 
						|
  gtk_tree_model_get (GTK_TREE_MODEL (model),
 | 
						|
		      &iter,
 | 
						|
		      FUNC_COLUMN, &func,
 | 
						|
		      STYLE_COLUMN, &style,
 | 
						|
		      -1);
 | 
						|
 | 
						|
  if (func)
 | 
						|
    {
 | 
						|
      gtk_tree_store_set (GTK_TREE_STORE (model),
 | 
						|
			  &iter,
 | 
						|
			  STYLE_COLUMN, (style == PANGO_STYLE_ITALIC ? PANGO_STYLE_NORMAL : PANGO_STYLE_ITALIC),
 | 
						|
			  -1);
 | 
						|
      window = (func) (gtk_widget_get_toplevel (GTK_WIDGET (tree_view)));
 | 
						|
      
 | 
						|
      if (window != NULL)
 | 
						|
	{
 | 
						|
	  CallbackData *cbdata;
 | 
						|
	  
 | 
						|
	  cbdata = g_new (CallbackData, 1);
 | 
						|
	  cbdata->model = model;
 | 
						|
	  cbdata->path = gtk_tree_path_copy (path);
 | 
						|
	  
 | 
						|
	  g_signal_connect (window, "destroy",
 | 
						|
			    G_CALLBACK (window_closed_cb), cbdata);
 | 
						|
	}
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
static void
 | 
						|
selection_cb (GtkTreeSelection *selection,
 | 
						|
	      GtkTreeModel     *model)
 | 
						|
{
 | 
						|
  GtkTreeIter iter;
 | 
						|
  GValue value = {0, };
 | 
						|
 | 
						|
  if (! gtk_tree_selection_get_selected (selection, NULL, &iter))
 | 
						|
    return;
 | 
						|
 | 
						|
  gtk_tree_model_get_value (model, &iter,
 | 
						|
			    FILENAME_COLUMN,
 | 
						|
			    &value);
 | 
						|
  if (g_value_get_string (&value))
 | 
						|
    load_file (g_value_get_string (&value));
 | 
						|
  g_value_unset (&value);
 | 
						|
}
 | 
						|
 | 
						|
static GtkWidget *
 | 
						|
create_text (GtkTextBuffer **buffer,
 | 
						|
	     gboolean        is_source)
 | 
						|
{
 | 
						|
  GtkWidget *scrolled_window;
 | 
						|
  GtkWidget *text_view;
 | 
						|
  PangoFontDescription *font_desc;
 | 
						|
 | 
						|
  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 | 
						|
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
 | 
						|
				  GTK_POLICY_AUTOMATIC,
 | 
						|
				  GTK_POLICY_AUTOMATIC);
 | 
						|
  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
 | 
						|
				       GTK_SHADOW_IN);
 | 
						|
  
 | 
						|
  text_view = gtk_text_view_new ();
 | 
						|
  
 | 
						|
  *buffer = gtk_text_buffer_new (NULL);
 | 
						|
  gtk_text_view_set_buffer (GTK_TEXT_VIEW (text_view), *buffer);
 | 
						|
  gtk_text_view_set_editable (GTK_TEXT_VIEW (text_view), FALSE);
 | 
						|
  gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (text_view), FALSE);
 | 
						|
 | 
						|
  gtk_container_add (GTK_CONTAINER (scrolled_window), text_view);
 | 
						|
  
 | 
						|
  if (is_source)
 | 
						|
    {
 | 
						|
      font_desc = pango_font_description_from_string ("monospace");
 | 
						|
      gtk_widget_modify_font (text_view, font_desc);
 | 
						|
      pango_font_description_free (font_desc);
 | 
						|
 | 
						|
      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
 | 
						|
                                   GTK_WRAP_NONE);
 | 
						|
    }
 | 
						|
  else
 | 
						|
    {
 | 
						|
      /* Make it a bit nicer for text. */
 | 
						|
      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
 | 
						|
                                   GTK_WRAP_WORD);
 | 
						|
      gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
 | 
						|
                                            2);
 | 
						|
      gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
 | 
						|
                                            2);
 | 
						|
    }
 | 
						|
  
 | 
						|
  return scrolled_window;
 | 
						|
}
 | 
						|
 | 
						|
static GtkWidget *
 | 
						|
create_tree (void)
 | 
						|
{
 | 
						|
  GtkTreeSelection *selection;
 | 
						|
  GtkCellRenderer *cell;
 | 
						|
  GtkWidget *tree_view;
 | 
						|
  GtkTreeViewColumn *column;
 | 
						|
  GtkTreeStore *model;
 | 
						|
  GtkTreeIter iter;
 | 
						|
  GtkWidget *box, *label, *scrolled_window;
 | 
						|
 | 
						|
  Demo *d = testgtk_demos;
 | 
						|
 | 
						|
  model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_INT);
 | 
						|
  tree_view = gtk_tree_view_new ();
 | 
						|
  gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), GTK_TREE_MODEL (model));
 | 
						|
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
 | 
						|
 | 
						|
  gtk_tree_selection_set_mode (GTK_TREE_SELECTION (selection),
 | 
						|
			       GTK_SELECTION_BROWSE);
 | 
						|
  gtk_widget_set_size_request (tree_view, 200, -1);
 | 
						|
 | 
						|
  /* this code only supports 1 level of children. If we
 | 
						|
   * want more we probably have to use a recursing function.
 | 
						|
   */
 | 
						|
  while (d->title)
 | 
						|
    {
 | 
						|
      Demo *children = d->children;
 | 
						|
 | 
						|
      gtk_tree_store_append (GTK_TREE_STORE (model), &iter, NULL);
 | 
						|
 | 
						|
      gtk_tree_store_set (GTK_TREE_STORE (model),
 | 
						|
			  &iter,
 | 
						|
			  TITLE_COLUMN, d->title,
 | 
						|
			  FILENAME_COLUMN, d->filename,
 | 
						|
			  FUNC_COLUMN, d->func,
 | 
						|
			  STYLE_COLUMN, PANGO_STYLE_NORMAL,
 | 
						|
			  -1);
 | 
						|
 | 
						|
      d++;
 | 
						|
 | 
						|
      if (!children)
 | 
						|
	continue;
 | 
						|
      
 | 
						|
      while (children->title)
 | 
						|
	{
 | 
						|
	  GtkTreeIter child_iter;
 | 
						|
 | 
						|
	  gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
 | 
						|
	  
 | 
						|
	  gtk_tree_store_set (GTK_TREE_STORE (model),
 | 
						|
			      &child_iter,
 | 
						|
			      TITLE_COLUMN, children->title,
 | 
						|
			      FILENAME_COLUMN, children->filename,
 | 
						|
			      FUNC_COLUMN, children->func,
 | 
						|
			      STYLE_COLUMN, PANGO_STYLE_NORMAL,
 | 
						|
			      -1);
 | 
						|
	  
 | 
						|
	  children++;
 | 
						|
	}
 | 
						|
    }
 | 
						|
 | 
						|
  cell = gtk_cell_renderer_text_new ();
 | 
						|
 | 
						|
  column = gtk_tree_view_column_new_with_attributes ("Widget (double click for demo)",
 | 
						|
						     cell,
 | 
						|
						     "text", TITLE_COLUMN,
 | 
						|
						     "style", STYLE_COLUMN,
 | 
						|
						     NULL);
 | 
						|
  
 | 
						|
  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view),
 | 
						|
			       GTK_TREE_VIEW_COLUMN (column));
 | 
						|
 | 
						|
  gtk_tree_model_get_iter_first (GTK_TREE_MODEL (model), &iter);
 | 
						|
  gtk_tree_selection_select_iter (GTK_TREE_SELECTION (selection), &iter);
 | 
						|
 | 
						|
  g_signal_connect (selection, "changed", G_CALLBACK (selection_cb), model);
 | 
						|
  g_signal_connect (tree_view, "row_activated", G_CALLBACK (row_activated_cb), model);
 | 
						|
 | 
						|
  gtk_tree_view_collapse_all (GTK_TREE_VIEW (tree_view));
 | 
						|
  gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
 | 
						|
  				    
 | 
						|
  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
 | 
						|
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
 | 
						|
				  GTK_POLICY_NEVER,
 | 
						|
				  GTK_POLICY_AUTOMATIC);
 | 
						|
  gtk_container_add (GTK_CONTAINER (scrolled_window), tree_view);
 | 
						|
 | 
						|
  label = gtk_label_new ("Widget (double click for demo)");
 | 
						|
 | 
						|
  box = gtk_notebook_new ();
 | 
						|
  gtk_notebook_append_page (GTK_NOTEBOOK (box), scrolled_window, label);
 | 
						|
 | 
						|
  gtk_widget_grab_focus (tree_view);
 | 
						|
 | 
						|
   g_object_unref (model);
 | 
						|
 | 
						|
  return box;
 | 
						|
}
 | 
						|
 | 
						|
static void
 | 
						|
setup_default_icon (void)
 | 
						|
{
 | 
						|
  GdkPixbuf *pixbuf;
 | 
						|
  char *filename;
 | 
						|
  GError *err;
 | 
						|
 | 
						|
  err = NULL;
 | 
						|
 | 
						|
  pixbuf = NULL;
 | 
						|
  filename = demo_find_file ("gtk-logo-rgb.gif", &err);
 | 
						|
  if (filename)
 | 
						|
    {
 | 
						|
      pixbuf = gdk_pixbuf_new_from_file (filename, &err);
 | 
						|
      g_free (filename);
 | 
						|
    }
 | 
						|
 | 
						|
  /* Ignoring this error (passing NULL instead of &err above)
 | 
						|
   * would probably be reasonable for most apps.  We're just
 | 
						|
   * showing off.
 | 
						|
   */
 | 
						|
  if (err)
 | 
						|
    {
 | 
						|
      GtkWidget *dialog;
 | 
						|
      
 | 
						|
      dialog = gtk_message_dialog_new (NULL, 0,
 | 
						|
				       GTK_MESSAGE_ERROR,
 | 
						|
				       GTK_BUTTONS_CLOSE,
 | 
						|
				       "Failed to read icon file: %s",
 | 
						|
				       err->message);
 | 
						|
      g_error_free (err);
 | 
						|
 | 
						|
      g_signal_connect (dialog, "response",
 | 
						|
			G_CALLBACK (gtk_widget_destroy), NULL);
 | 
						|
    }
 | 
						|
 | 
						|
  if (pixbuf)
 | 
						|
    {
 | 
						|
      GList *list;      
 | 
						|
      GdkPixbuf *transparent;
 | 
						|
 | 
						|
      /* The gtk-logo-rgb icon has a white background, make it transparent */
 | 
						|
      transparent = gdk_pixbuf_add_alpha (pixbuf, TRUE, 0xff, 0xff, 0xff);
 | 
						|
 | 
						|
      list = NULL;
 | 
						|
      list = g_list_append (list, transparent);
 | 
						|
      gtk_window_set_default_icon_list (list);
 | 
						|
      g_list_free (list);
 | 
						|
      g_object_unref (pixbuf);
 | 
						|
      g_object_unref (transparent);
 | 
						|
    }
 | 
						|
}
 | 
						|
 | 
						|
int
 | 
						|
main (int argc, char **argv)
 | 
						|
{
 | 
						|
  GtkWidget *window;
 | 
						|
  GtkWidget *notebook;
 | 
						|
  GtkWidget *hbox;
 | 
						|
  GtkWidget *tree;
 | 
						|
  GtkTextTag *tag;
 | 
						|
 | 
						|
  /* Most code in gtk-demo is intended to be exemplary, but not
 | 
						|
   * these few lines, which are just a hack so gtk-demo will work
 | 
						|
   * in the GTK tree without installing it.
 | 
						|
   */
 | 
						|
  if (g_file_test ("../../gdk-pixbuf/libpixbufloader-pnm.la",
 | 
						|
                   G_FILE_TEST_EXISTS))
 | 
						|
    {
 | 
						|
      g_setenv ("GDK_PIXBUF_MODULE_FILE", "../../gdk-pixbuf/loaders.cache", TRUE);
 | 
						|
      g_setenv ("GTK_IM_MODULE_FILE", "../../modules/input/immodules.cache", TRUE);
 | 
						|
    }
 | 
						|
  /* -- End of hack -- */
 | 
						|
  
 | 
						|
  gtk_init (&argc, &argv);
 | 
						|
 | 
						|
  setup_default_icon ();
 | 
						|
  
 | 
						|
  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 | 
						|
  gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
 | 
						|
  g_signal_connect_after (window, "destroy",
 | 
						|
		    G_CALLBACK (gtk_main_quit), NULL);
 | 
						|
 | 
						|
  hbox = gtk_hbox_new (FALSE, 0);
 | 
						|
  gtk_container_add (GTK_CONTAINER (window), hbox);
 | 
						|
 | 
						|
  tree = create_tree ();
 | 
						|
  gtk_box_pack_start (GTK_BOX (hbox), tree, FALSE, FALSE, 0);
 | 
						|
 | 
						|
  notebook = gtk_notebook_new ();
 | 
						|
  gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
 | 
						|
 | 
						|
  gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
 | 
						|
			    create_text (&info_buffer, FALSE),
 | 
						|
			    gtk_label_new_with_mnemonic ("_Info"));
 | 
						|
 | 
						|
  tag = gtk_text_buffer_create_tag (info_buffer, "title",
 | 
						|
                                    "font", "Sans 18",
 | 
						|
                                    NULL);
 | 
						|
   g_object_unref (info_buffer);
 | 
						|
 | 
						|
  gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
 | 
						|
			    create_text (&source_buffer, TRUE),
 | 
						|
			    gtk_label_new_with_mnemonic ("_Source"));
 | 
						|
 | 
						|
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "comment",
 | 
						|
				    "foreground", "DodgerBlue",
 | 
						|
                                    NULL);
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "type",
 | 
						|
				    "foreground", "ForestGreen",
 | 
						|
                                    NULL);
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "string",
 | 
						|
				    "foreground", "RosyBrown",
 | 
						|
				    "weight", PANGO_WEIGHT_BOLD,
 | 
						|
                                    NULL);
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "control",
 | 
						|
				    "foreground", "purple",
 | 
						|
                                    NULL);
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "preprocessor",
 | 
						|
				    "style", PANGO_STYLE_OBLIQUE,
 | 
						|
 				    "foreground", "burlywood4",
 | 
						|
                                    NULL);
 | 
						|
  tag = gtk_text_buffer_create_tag (source_buffer, "function",
 | 
						|
				    "weight", PANGO_WEIGHT_BOLD,
 | 
						|
 				    "foreground", "DarkGoldenrod4",
 | 
						|
                                    NULL);
 | 
						|
   g_object_unref (source_buffer);
 | 
						|
  
 | 
						|
  gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
 | 
						|
  gtk_widget_show_all (window);
 | 
						|
  
 | 
						|
 | 
						|
  load_file (testgtk_demos[0].filename);
 | 
						|
  
 | 
						|
  gtk_main ();
 | 
						|
 | 
						|
  return 0;
 | 
						|
}
 |