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/*
* e-cell-pixbuf.c: An ECell that displays a GdkPixbuf
*
* Copyright (C) 2001 Ximian, Inc.
*
* Authors: Vladimir Vukicevic <vladimir@ximian.com>
*
*/
#include <stdio.h>
#include <libgnomeui/gnome-canvas.h>
#include "e-cell-pixbuf.h"
static ECellClass *parent_class;
typedef struct _ECellPixbufView ECellPixbufView;
struct _ECellPixbufView {
ECellView cell_view;
GnomeCanvas *canvas;
};
/*
* ECellPixbuf functions
*/
ECell *
e_cell_pixbuf_new (void)
{
ECellPixbuf *ecp;
ecp = gtk_type_new (E_CELL_PIXBUF_TYPE);
e_cell_pixbuf_construct (ecp);
return (ECell *) ecp;
}
void
e_cell_pixbuf_construct (ECellPixbuf *ecp)
{
/* noop */
return;
}
/*
* ECell methods
*/
static ECellView *
pixbuf_new_view (ECell *ecell, ETableModel *table_model, void *e_table_item_view)
{
ECellPixbufView *pixbuf_view = g_new0 (ECellPixbufView, 1);
ETableItem *eti = E_TABLE_ITEM (e_table_item_view);
GnomeCanvas *canvas = GNOME_CANVAS_ITEM (eti)->canvas;
pixbuf_view->cell_view.ecell = ecell;
pixbuf_view->cell_view.e_table_model = table_model;
pixbuf_view->cell_view.e_table_item_view = e_table_item_view;
pixbuf_view->canvas = canvas;
return (ECellView *) pixbuf_view;
}
static void
pixbuf_kill_view (ECellView *ecell_view)
{
ECellPixbufView *pixbuf_view = (ECellPixbufView *) ecell_view;
g_free (pixbuf_view);
}
static void
pixbuf_draw (ECellView *ecell_view, GdkDrawable *drawable,
int model_col, int view_col, int row, ECellFlags flags,
int x1, int y1, int x2, int y2)
{
GdkPixbuf *cell_pixbuf;
int real_x, real_y, real_w, real_h;
int pix_w, pix_h;
cell_pixbuf = (GdkPixbuf *) e_table_model_value_at (ecell_view->e_table_model,
model_col, row);
/* we can't make sure we really got a pixbuf since, well, it's a Gdk thing */
if (x2 - x1 == 0)
return;
if (!cell_pixbuf)
return;
pix_w = gdk_pixbuf_get_width (cell_pixbuf);
pix_h = gdk_pixbuf_get_height (cell_pixbuf);
/* We center the pixbuf within our allocated space */
if (x2 - x1 > pix_w) {
int diff = (x2 - x1) - pix_w;
real_x = x1 + diff/2;
real_w = pix_w;
} else {
real_x = x1;
real_w = x2 - x1;
}
if (y2 - y1 > pix_h) {
int diff = (y2 - y1) - pix_h;
real_y = y1 + diff/2;
real_h = pix_h;
} else {
real_y = y1;
real_h = y2 - y1;
}
gdk_pixbuf_render_to_drawable_alpha (cell_pixbuf,
drawable,
0, 0,
real_x, real_y,
real_w, real_h,
GDK_PIXBUF_ALPHA_BILEVEL,
127,
GDK_RGB_DITHER_NORMAL,
0, 0);
}
static gint
pixbuf_event (ECellView *ecell_view, GdkEvent *event,
int model_col, int view_col, int row,
ECellFlags flags, ECellActions *actions)
{
/* noop */
return FALSE;
}
static gint
pixbuf_height (ECellView *ecell_view, int model_col, int view_col, int row)
{
GdkPixbuf *pixbuf;
pixbuf = (GdkPixbuf *) e_table_model_value_at (ecell_view->e_table_model, model_col, row);
if (!pixbuf)
return 0;
/* We give ourselves 3 pixels of padding on either side */
return gdk_pixbuf_get_height (pixbuf) + 6;
}
static gint
pixbuf_max_width (ECellView *ecell_view, int model_col, int view_col)
{
int pw;
gint num_rows, i;
gint max_width = -1;
if (model_col == 0) {
num_rows = e_table_model_row_count (ecell_view->e_table_model);
for (i = 0; i <= num_rows; i++) {
GdkPixbuf *pixbuf = (GdkPixbuf *) e_table_model_value_at
(ecell_view->e_table_model,
model_col,
i);
if (!pixbuf)
continue;
pw = gdk_pixbuf_get_width (pixbuf);
if (max_width < pw)
max_width = pw;
}
} else {
return -1;
}
return max_width;
}
static void
pixbuf_destroy (GtkObject *object)
{
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
e_cell_pixbuf_init (GtkObject *object)
{
/* ... */
}
static void
e_cell_pixbuf_class_init (GtkObjectClass *object_class)
{
ECellClass *ecc = (ECellClass *) object_class;
object_class->destroy = pixbuf_destroy;
ecc->new_view = pixbuf_new_view;
ecc->kill_view = pixbuf_kill_view;
ecc->draw = pixbuf_draw;
ecc->event = pixbuf_event;
ecc->height = pixbuf_height;
ecc->max_width = pixbuf_max_width;
parent_class = gtk_type_class (E_CELL_TYPE);
}
guint
e_cell_pixbuf_get_type (void)
{
static guint type = 0;
if (!type) {
GtkTypeInfo type_info = {
"ECellPixbuf",
sizeof (ECellPixbuf),
sizeof (ECellPixbufClass),
(GtkClassInitFunc) e_cell_pixbuf_class_init,
(GtkObjectInitFunc) e_cell_pixbuf_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
type = gtk_type_unique (e_cell_get_type (), &type_info);
}
return type;
}
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