path: root/widgets/e-cell-text.c

/*
 * e-cell-text.c: Text cell renderer
 *
 * Author:
 *   Miguel de Icaza (miguel@kernel.org)
 *
 * (C) 1999 Helix Code, Inc
 */
#include <config.h>
#include <gtk/gtkenums.h>
#include "e-cell-text.h"
#include "e-util.h"

#define PARENT_TYPE e_cell_get_type()

#define TEXT_PAD 2

typedef struct {
    ECellView    cell_view;
    GdkGC       *gc;
    GdkFont     *font;
    GnomeCanvas *canvas;
} ECellTextView;

static ECellClass *parent_class;

static ECellView *
ect_realize (ECell *ecell, GnomeCanvas *canvas)
{
    ECellText *ect = E_CELL_TEXT (ecell);
    ECellTextView *ectv = g_new0 (ECellTextView, 1);

    ectv->cell_view.ecell = ecell;
    ectv->gc = gdk_gc_new (GTK_WIDGET (canvas)->window);
    if (ect->font_name){
        GdkFont *f;

        f = gdk_fontset_load (ect->font_name);
        ectv->font = f;
    }
    if (!ectv->font){
        ectv->font = GTK_WIDGET (canvas)->style->font;
        
        gdk_font_ref (ectv->font);
    }
    
    ectv->canvas = canvas;

    return (ECellView *)ectv;
}

static void
ect_unrealize (ECellView *ecv)
{
    ECellTextView *ectv = (ECellTextView *) ecv;

    gdk_gc_unref (ectv->gc);
    ectv->gc = NULL;

    gdk_font_unref (ectv->font);
    ectv->font = NULL;

    g_free (ectv);
}

static void
ect_draw (ECellView *ecell_view, GdkDrawable *drawable, int col, int row, int x1, int y1, int x2, int y2)
{
    ECellText *ect = E_CELL_TEXT (ecell_view->ecell);
    ECellTextView *text_view = (ECellTextView *) ecell_view;
    GdkRectangle rect;
    const char *str = e_table_model_value_at (ecell_view->ecell->table_model, col, row);
    int selected = e_table_model_get_selected_row (ecell_view->ecell->table_model) == row;
    int xoff, w;
        
    rect.x = x1;
    rect.y = y1;
    rect.width = x2 - x1;
    rect.height = y2 - y1;
    
    gdk_gc_set_clip_rectangle (text_view->gc, &rect);

    switch (ect->justify){
    case GTK_JUSTIFY_LEFT:
        xoff = 1;
        break;
        
    case GTK_JUSTIFY_RIGHT:
        w = 1 + gdk_text_width (text_view->font, str, strlen (str));
        xoff = (x2 - x1) - w;
        break;
        
    case GTK_JUSTIFY_CENTER:
        xoff = ((x2 - x1) - gdk_text_width (text_view->font, str, strlen (str))) / 2;
        break;
    default:
        g_warning ("Can not handle GTK_JUSTIFY_FILL");
        break;
    }

    /* Draw now */
    {
        GtkWidget *w = GTK_WIDGET (text_view->canvas);
        GdkColor *background, *foreground;
        const int height = text_view->font->ascent + text_view->font->descent;
        
        if (selected){
            background = &w->style->bg [GTK_STATE_SELECTED];
            foreground = &w->style->text [GTK_STATE_SELECTED];
        } else {
            background = &w->style->base [GTK_STATE_NORMAL];
            foreground = &w->style->text [GTK_STATE_NORMAL];
        }
        
        gdk_gc_set_foreground (text_view->gc, background); 
        gdk_draw_rectangle (drawable, text_view->gc, TRUE,
                    rect.x, rect.y, rect.width, rect.height);
        gdk_gc_set_foreground (text_view->gc, foreground);
        gdk_draw_string (drawable, text_view->font, text_view->gc,
                 x1 + xoff, y2 - text_view->font->descent - ((y2-y1-height)/2), str);
    }
}

static void
e_cell_text_start_editing (ECellText *ect, int col, int row)
{
    printf ("Starting to edit %d %d\n", col, row);
}

static gint
ect_event (ECellView *ecell_view, GdkEvent *event, int col, int row)
{
    ECell *ecell = ecell_view->ecell;
    ECellText *ect = E_CELL_TEXT (ecell);
    
    switch (event->type){
    case GDK_BUTTON_PRESS:
        if (e_table_model_get_selected_row (ecell->table_model) == row)
            e_cell_text_start_editing (ect, col, row);
        else
            e_table_model_select_row (ecell->table_model, row);
        return TRUE;
    }
}

static int
ect_height (ECellView *ecell_view, int col, int row)
{
    ECellTextView *text_view = (ECellTextView *) ecell_view;
    
    return (text_view->font->ascent + text_view->font->descent) + TEXT_PAD;
}

static void
ect_destroy (GtkObject *object)
{
    ECellText *ect = E_CELL_TEXT (object);

    g_free (ect->font_name);

    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
e_cell_text_class_init (GtkObjectClass *object_class)
{
    ECellClass *ecc = (ECellClass *) object_class;

    object_class->destroy = ect_destroy;
    
    ecc->realize = ect_realize;
    ecc->unrealize = ect_unrealize;
    ecc->draw = ect_draw;
    ecc->event = ect_event;
    ecc->height = ect_height;
    
    parent_class = gtk_type_class (PARENT_TYPE);
}

E_MAKE_TYPE(e_cell_text, "ECellText", ECellText, e_cell_text_class_init, NULL, PARENT_TYPE);

ECell *
e_cell_text_new (ETableModel *etm, const char *fontname, GtkJustification justify)
{
    ECellText *ect = gtk_type_new (e_cell_text_get_type ());

    ect->font_name = g_strdup (fontname);
    ect->justify = justify;
    E_CELL (ect)->table_model = etm;
      
    return (ECell *) ect;
}