notebook.c

开发linux应用-用gtk+和gdk开发linux图形用户界面应用－－的实例

/*
 * Auth: Eric Harlow
 * File: Notebook.c
 * 
 * Create a sample notebook application
 */

#include <gtk/gtk.h>
#include "logtypes.h"


extern GTree *dateTree;
extern GTree *userTree;

GtkWidget *hourlyPage = NULL;
GtkWidget *dailyPage = NULL;
GtkWidget *userPage = NULL;
GtkWidget *hourlyCList = NULL;
GtkWidget *dailyCList = NULL;
GtkWidget *userCList = NULL;


typedef struct {
    GtkWidget *widget;
    long nMaxSize;
    long row;
} typGraphInfo;

/*
 * Titles displayed on the clist for the various pages
 */
char *szHourlyTitles[] = {"Hour", "Hits", "Size", "Graph"};
char *szDailyTitles[] = {"Date", "Hits", "Size", "Graph"};
char *szUserTitles[] = {"User", "Hits", "Size", "Graph"};

#define NUM_GRAPHS 21
GdkPixmap *pixmapGraph [NUM_GRAPHS];
GdkBitmap *mask[NUM_GRAPHS];

char **CreateBarBitmap (int height, int width, int size, char *sColor);
void FreeResources ();
void PopulateUser ();
void PopulateDaily ();
void PopulateHourly ();
void GetHitsForHour (int nHours, long *hits, long *size);
void FreeBarBitmap (char **bitmap);

/*
 * GeneratePixmaps
 *
 * Generate the pixmaps for all the sizes of horizontal bars 
 * that are supported. 
 */
void GeneratePixmaps (GtkWidget *widget)
{
    int i;
    gchar **pixmap_d;

    /* --- For each possible graph --- */
    for (i = 0; i < NUM_GRAPHS; i++) {

        /* --- Get the data for the graph --- */
        pixmap_d = CreateBarBitmap (9, 65, i * 3, "#ff0000");

        /* --- Create a pixmap --- */
        pixmapGraph[i] = gdk_pixmap_create_from_xpm_d (
                      widget->window,
                      &mask[i], NULL,
                      (gpointer) pixmap_d);

        /* --- Free the data --- */
        FreeBarBitmap (pixmap_d);
    }
}

/*
 * PageSwitch
 *
 * Event that occurs when a different page is now
 * the focus.
 */
static void PageSwitch (GtkWidget *widget, 
                         GtkNotebookPage *page, 
                         gint page_num)
{

}



/*
 * AddPage
 *
 * Add a page to the notebook 
 *
 * notebook - existing notebook
 * szName - name to give to the new page
 */
GtkWidget *AddPage (GtkWidget *notebook, char *szName)
{
    GtkWidget *label;
    GtkWidget *frame;

    /* --- Create a label from the name. --- */
    label = gtk_label_new (szName);
    gtk_widget_show (label);

    /* --- Create a frame for the page --- */
    frame = gtk_frame_new (szName);
    gtk_widget_show (frame);

    /* --- Add a page with the frame and label --- */
    gtk_notebook_append_page (GTK_NOTEBOOK (notebook), frame, label);

    return (frame);
}



/*
 * CreateNotebook
 *
 * Create a new notebook and add pages to it.
 *
 * window - window to create the notebook in.
 */
void CreateNotebook (GtkWidget *window)
{
    GtkWidget *notebook;

    /* --- Create the notebook --- */
    notebook = gtk_notebook_new ();

    /* --- Listen for the switch page event --- */
    gtk_signal_connect (GTK_OBJECT (notebook), "switch_page",
			  GTK_SIGNAL_FUNC (PageSwitch), NULL);

    /* --- Make sure tabs are on top --- */
    gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);

    /* --- Add notebook to vbox --- */
    gtk_box_pack_start (GTK_BOX (window), notebook, TRUE, TRUE, 0);

    /* --- Give notebook a border --- */
    gtk_container_border_width (GTK_CONTAINER (notebook), 10);

    /* --- Add pages to the notebook --- */
    hourlyPage = AddPage (notebook, "Hourly Traffic");
    dailyPage = AddPage (notebook, "Daily Traffic");
    userPage = AddPage (notebook, "User Traffic");
      
    /* --- Show everything. --- */
    gtk_widget_show_all (window);
}


/*
 * PopulatePages
 *
 * Populate the pages on the notebook with the information.
 * Populates the hourly page, daily page, and the user page.
 *
 * Frees the data used to generate the page when done.
 */
void PopulatePages ()
{
    /* --- Free clist data if already used --- */
    if (userCList) {
        gtk_clist_clear (GTK_CLIST (userCList));
    }
    if (hourlyCList) {
        gtk_clist_clear (GTK_CLIST (hourlyCList));
    }
    if (dailyCList) {
        gtk_clist_clear (GTK_CLIST (dailyCList));
    }

    /* --- Populate each of the fields --- */
    PopulateHourly ();
    PopulateDaily ();
    PopulateUser ();

    /* --- Free the resources generated by parselog --- */
    FreeResources ();
}



/*
 * PopulateHourly 
 *
 * Populate the clist with the hourly information. 
 * Assumes that the trees are fully populated with
 * data ready to be picked.
 */
void PopulateHourly ()
{
    gchar *strValue[4];
    int i;
    int ix;
    long hits;
    long size;
    gchar buffer0[88];
    gchar buffer1[88];
    gchar buffer2[88];
    long nMaxSize = 0;

    /* --- Here's the array used to insert into clist --- */
    strValue[0] = buffer0;
    strValue[1] = buffer1;
    strValue[2] = buffer2;

    /* --- This is NULL because it's a pixmap --- */
    strValue[3] = NULL;
    
    /* --- If clist not created yet... --- */
    if (hourlyCList == NULL) {

        /* --- Create the clist with four columns --- */
        hourlyCList = gtk_clist_new_with_titles (4, szHourlyTitles);

        /* --- Make sure titles are visible --- */
        gtk_clist_column_titles_show (GTK_CLIST (hourlyCList));

        /* --- Set the column widths --- */
        gtk_clist_set_column_width (GTK_CLIST (hourlyCList), 0, 80);
        gtk_clist_set_column_width (GTK_CLIST (hourlyCList), 1, 80);
        gtk_clist_set_column_width (GTK_CLIST (hourlyCList), 2, 80);
        gtk_clist_set_column_width (GTK_CLIST (hourlyCList), 3, 40);

        /* --- Set the justification on each of the columns --- */
        gtk_clist_set_column_justification (GTK_CLIST (hourlyCList), 
                                            0, GTK_JUSTIFY_RIGHT);
        gtk_clist_set_column_justification (GTK_CLIST (hourlyCList), 
                                            1, GTK_JUSTIFY_RIGHT);
        gtk_clist_set_column_justification (GTK_CLIST (hourlyCList), 
                                            2, GTK_JUSTIFY_RIGHT);

        /* --- Add the clist to the correct page --- */
        gtk_container_add (GTK_CONTAINER (hourlyPage), hourlyCList);
    }

    /* --- Generate a row for each hour of the day --- */
    for (i = 0; i < 24; i++) {

        /* --- Show the time - like 3:00 --- */
        sprintf (strValue[0], "%d:00", i);
 
        /* --- Get # of hits for that hour --- */
        GetHitsForHour (i, &hits, &size);

        /* --- Display hit count and byte count --- */
        sprintf (strValue[1], "%ld", hits);
        sprintf (strValue[2], "%ld", size);

        /* --- Add the data to the clist --- */
        gtk_clist_append (GTK_CLIST (hourlyCList), strValue);

        /* --- Keep track of max byte count --- */
        if (size > nMaxSize) {
            nMaxSize = size;
        }
    }


    /*
     * Now that the clist is generated, we need to go back 
     * and add the horizontal graph to the clist.  Couldn't do
     * it earlier since we didn't know what the max was. 
     */

    /* --- Every hour of the day --- */
    for (i = 0; i < 24; i++) {

        /* --- Get hits for the hour --- */
        GetHitsForHour (i, &hits, &size);

        /* --- Calculate how big graph should be --- */
        ix = (size * NUM_GRAPHS-1) / nMaxSize;
 
        /* --- Display that graph in the clist --- */
        gtk_clist_set_pixmap (GTK_CLIST (hourlyCList), 
              i, 3, (GdkPixmap *) pixmapGraph[ix], mask[ix]);
    }

    /* --- Show the clist --- */
    gtk_widget_show_all (GTK_WIDGET (hourlyCList));
}




/*
 * ShowDateInfo
 *