ltt/branches/poly/lttv/modules/gui/tracecontrol/tracecontrol.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2005 Mathieu Desnoyers
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <glib.h>
  24 #include <string.h>
  25 #include <gtk/gtk.h>
  26 #include <gdk/gdk.h>
  27 #include <gdk/gdkkeysyms.h>
  28
  29 #include <lttv/lttv.h>
  30 #include <lttv/module.h>
  31 #include <lttv/hook.h>
  32 #include <lttv/filter.h>
  33
  34 #include <lttvwindow/lttvwindow.h>
  35 #include <lttvwindow/lttvwindowtraces.h>
  36
  37 #include "hTraceControlInsert.xpm"
  38
  39
  40 GSList *g_control_list = NULL ;
  41
  42 /*! \file lttv/modules/gui/tracecontrol/tracecontrol.c
  43  *  \brief Graphic trace start/stop control interface.
  44  *
  45  * This plugin interacts with lttctl to start/stop tracing. It needs to take the
  46  * root password to be able to interact with lttctl.
  47  *
  48  */
  49
  50 typedef struct _ControlData ControlData;
  51
  52 /*
  53  * Prototypes
  54  */
  55 GtkWidget *guicontrol_get_widget(ControlData *tcd);
  56 ControlData *gui_control(Tab *tab);
  57 void gui_control_destructor(ControlData *tcd);
  58 GtkWidget* h_guicontrol(Tab *tab);
  59 void control_destroy_walk(gpointer data, gpointer user_data);
  60
  61 /*
  62  * Callback functions
  63  */
  64
  65
  66 /**
  67  *  @struct _ControlData
  68  *
  69  *  @brief Main structure of gui filter
  70  *  Main struct for the filter gui module
  71  */
  72 struct _ControlData {
  73   Tab *tab;                             /**< current tab of module */
  74
  75   GtkWidget *f_window;                  /**< filter window */
  76
  77   GtkWidget *f_main_box;                /**< main container */
  78
  79 };
  80
  81 /**
  82  *  @fn GtkWidget* guicontrol_get_widget(ControlData*)
  83  *
  84  *  This function returns the current main widget
  85  *  used by this module
  86  *  @param tcd the module struct
  87  *  @return The main widget
  88  */
  89 GtkWidget*
  90 guicontrol_get_widget(ControlData *tcd)
  91 {
  92   return tcd->f_window;
  93 }
  94
  95 /**
  96  *  @fn ControlData* gui_control(Tab*)
  97  *
  98  *  Constructor is used to create ControlData data structure.
  99  *  @param tab The tab structure used by the widget
 100  *  @return The Filter viewer data created.
 101  */
 102 ControlData*
 103 gui_control(Tab *tab)
 104 {
 105   g_debug("filter::gui_control()");
 106
 107   unsigned i;
 108   GtkCellRenderer *renderer;
 109   GtkTreeViewColumn *column;
 110
 111   ControlData* tcd = g_new(ControlData,1);
 112
 113   tcd->tab  = tab;
 114
 115   tcd->f_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 116   gtk_window_set_title(GTK_WINDOW(tcd->f_window), "LTTng Trace Control");
 117   /*
 118    * Initiating GtkTable layout
 119    * starts with 2 rows and 5 columns and
 120    * expands when expressions added
 121    */
 122   tcd->f_main_box = gtk_table_new(13,2,FALSE);
 123   gtk_table_set_row_spacings(GTK_TABLE(tcd->f_main_box),5);
 124   gtk_table_set_col_spacings(GTK_TABLE(tcd->f_main_box),5);
 125
 126   gtk_container_add(GTK_CONTAINER(tcd->f_window), GTK_WIDGET(tcd->f_main_box));
 127
 128   /*
 129    *  First half of the filter window
 130    *  - textual entry of filter expression
 131    *  - processing button
 132    */
 133   GtkWidget *username_label = gtk_label_new("Username:");
 134   gtk_widget_show (username_label);
 135   GtkWidget *username_entry = gtk_entry_new();
 136   gtk_entry_set_text(GTK_ENTRY(username_entry),"root");
 137
 138   gtk_widget_show (username_entry);
 139
 140   gtk_table_attach( GTK_TABLE(tcd->f_main_box),username_label,0,6,0,1,GTK_FILL,GTK_FILL,0,0);
 141   gtk_table_attach( GTK_TABLE(tcd->f_main_box),username_entry,6,7,0,1,GTK_FILL,GTK_FILL,0,0);
 142
 143
 144   /*
 145    * show main container
 146    */
 147   gtk_widget_show(tcd->f_main_box);
 148   gtk_widget_show(tcd->f_window);
 149
 150
 151   g_object_set_data_full(
 152       G_OBJECT(guifilter_get_widget(tcd)),
 153       "filter_viewer_data",
 154       tcd,
 155       (GDestroyNotify)gui_control_destructor);
 156
 157   g_control_list = g_slist_append(
 158       g_control_list,
 159       tcd);
 160
 161   return tcd;
 162 }
 163
 164
 165 /**
 166  *  @fn void gui_control_destructor(ControlData*)
 167  *
 168  *  Destructor for the filter gui module
 169  *  @param tcd The module structure
 170  */
 171 void
 172 gui_control_destructor(ControlData *tcd)
 173 {
 174   Tab *tab = tcd->tab;
 175
 176   /* May already been done by GTK window closing */
 177   if(GTK_IS_WIDGET(guifilter_get_widget(tcd))){
 178     g_info("widget still exists");
 179   }
 180 //  if(tab != NULL) {
 181 //    lttvwindow_unregister_traceset_notify(tcd->tab,
 182 //                                          filter_traceset_changed,
 183 //                                          filter_viewer_data);
 184 //  }
 185   lttvwindowtraces_background_notify_remove(tcd);
 186
 187   g_control_list = g_slist_remove(g_control_list, tcd);
 188
 189   g_free(tcd);
 190 }
 191
 192
 193 /**
 194  *  @fn GtkWidget* h_guicontrol(Tab*)
 195  *
 196  *  Control Module's constructor hook
 197  *
 198  *  This constructor is given as a parameter to the menuitem and toolbar button
 199  *  registration. It creates the list.
 200  *  @param tab A pointer to the parent window.
 201  *  @return The widget created.
 202  */
 203 GtkWidget *
 204 h_guicontrol(Tab *tab)
 205 {
 206   ControlData* f = gui_control(tab) ;
 207
 208   return NULL;
 209 }
 210
 211 /**
 212  *  @fn static void init()
 213  *
 214  *  This function initializes the Filter Viewer functionnality through the
 215  *  gtkTraceSet API.
 216  */
 217 static void init() {
 218
 219   lttvwindow_register_constructor("guicontrol",
 220                                   "/",
 221                                   "Insert Tracing Control Module",
 222                                   hTraceControlInsert_xpm,
 223                                   "Insert Tracing Control Module",
 224                                   h_guicontrol);
 225 }
 226
 227 /**
 228  *  @fn void control_destroy_walk(gpointer,gpointer)
 229  *
 230  *  Initiate the destruction of the current gui module
 231  *  on the GTK Interface
 232  */
 233 void
 234 control_destroy_walk(gpointer data, gpointer user_data)
 235 {
 236   ControlData *tcd = (ControlData*)data;
 237
 238   g_debug("traceontrol.c : control_destroy_walk, %p", tcd);
 239
 240   /* May already have been done by GTK window closing */
 241   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd)))
 242     gtk_widget_destroy(guicontrol_get_widget(tcd));
 243 }
 244
 245 /**
 246  *  @fn static void destroy()
 247  *  @brief plugin's destroy function
 248  *
 249  *  This function releases the memory reserved by the module and unregisters
 250  *  everything that has been registered in the gtkTraceSet API.
 251  */
 252 static void destroy() {
 253
 254   g_slist_foreach(g_control_list, control_destroy_walk, NULL );
 255
 256   lttvwindow_unregister_constructor(h_guicontrol);
 257
 258 }
 259
 260
 261 LTTV_MODULE("guitracecontrol", "Trace Control Window", \
 262     "Graphical module that let user control kernel tracing", \
 263     init, destroy, "lttvwindow")
 264