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more preparations for thumbnail loading

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This commit is contained in:
Sven Neumann 2005-05-06 23:42:14 +00:00
parent f3e9122465
commit e016f2db02
1 changed files with 61 additions and 81 deletions
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142
plug-ins/winicon/icoload.c
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@ -46,14 +46,21 @@
#define B_VAL_GIMP(p) ((guchar *)(p))[2]
static gint ico_read_int8 (FILE *fp, guint8 *data, gint count);
static gint ico_read_int16 (FILE *fp, guint16 *data, gint count);
static gint ico_read_int32 (FILE *fp, guint32 *data, gint count);
static gboolean ico_init (const gchar *filename, MsIcon *ico);
static void ico_read_entry (MsIcon *ico, MsIconEntry* entry);
static void ico_read_data (MsIcon *ico, gint icon_num);
static void ico_load (MsIcon *ico);
static gint32 ico_to_gimp (MsIcon *ico);
static gint ico_read_int8 (FILE *fp,
guint8 *data,
gint count);
static gint ico_read_int16 (FILE *fp,
guint16 *data,
gint count);
static gint ico_read_int32 (FILE *fp,
guint32 *data,
gint count);
static gboolean ico_init (const gchar *filename,
MsIcon *ico);
static void ico_read_entry (MsIcon *ico,
MsIconEntry *entry);
static void ico_read_data (MsIcon *ico,
gint icon_num);
static gint
@ -108,6 +115,7 @@ ico_read_int8 (FILE *fp,
bytes = fread ((gchar *) data, sizeof (gchar), count, fp);
if (bytes <= 0) /* something bad happened */
break;
count -= bytes;
data += bytes;
}
@ -153,8 +161,8 @@ static void
ico_read_entry (MsIcon *ico,
MsIconEntry *entry)
{
if (!ico || !entry)
return;
g_return_if_fail (ico != NULL);
g_return_if_fail (entry != NULL);
ico->cp += ico_read_int8 (ico->fp, &entry->width, 1);
ico->cp += ico_read_int8 (ico->fp, &entry->height, 1);
@ -182,8 +190,7 @@ ico_read_data (MsIcon *ico,
MsIconEntry *entry;
gint length;
if (!ico)
return;
g_return_if_fail (ico != NULL);
D(("Reading data for icon %i ------------------------------\n", icon_num));
@ -241,30 +248,6 @@ ico_read_data (MsIcon *ico,
D((" length of and_map: %i\n", length));
}
static void
ico_load (MsIcon *ico)
{
gint i;
if (!ico)
return;
ico->cp += ico_read_int16 (ico->fp, &ico->icon_count, 1);
ico->icon_dir = g_new0 (MsIconEntry, ico->icon_count);
ico->icon_data = g_new0 (MsIconData, ico->icon_count);
D(("*** %s: Microsoft icon file, containing %i icon(s)\n",
ico->filename, ico->icon_count));
for (i = 0; i < ico->icon_count; i++)
ico_read_entry (ico, &ico->icon_dir[i]);
for (i = 0; i < ico->icon_count; i++)
ico_read_data (ico, i);
}
gint
ico_get_bit_from_data (const guint8 *data,
gint line_width,
@ -310,7 +293,6 @@ ico_get_nibble_from_data (const guint8 *data,
return result;
}
gint
ico_get_byte_from_data (guint8 *data,
gint line_width,
@ -465,51 +447,15 @@ ico_load_layer (gint32 image,
return layer;
}
static gint32
ico_to_gimp (MsIcon *ico)
{
gint32 image;
gint32 first_layer;
gint max_w, max_h;
gint i;
/* Do a quick scan of the icons in the file to find the
largest icon contained ... */
max_w = 0; max_h = 0;
for (i = 0; i < ico->icon_count; i++)
{
if (ico->icon_dir[i].width > max_w)
max_w = ico->icon_dir[i].width;
if (ico->icon_dir[i].height > max_h)
max_h = ico->icon_dir[i].height;
}
/* Allocate the Gimp image */
image = gimp_image_new (max_w, max_h, GIMP_RGB);
gimp_image_set_filename (image, ico->filename);
/* Scan icons again and set up a layer for each icon */
first_layer = ico_load_layer (image, ico, 0);
for (i = 1; i < ico->icon_count; i++)
ico_load_layer (image, ico, i);
gimp_image_set_active_layer (image, first_layer);
D(("*** icon successfully loaded.\n\n"));
return image;
}
gint32
ico_load_image (const gchar *filename)
{
gint32 image_ID;
MsIcon ico;
gint32 image;
gint32 layer;
gint width = 0;
gint height = 0;
gint i;
gimp_progress_init (NULL);
gimp_progress_set_text (_("Opening '%s'..."),
@ -518,15 +464,49 @@ ico_load_image (const gchar *filename)
if (! ico_init (filename, &ico))
return -1;
ico_load (&ico);
ico.cp += ico_read_int16 (ico.fp, &ico.icon_count, 1);
ico.icon_dir = g_new0 (MsIconEntry, ico.icon_count);
ico.icon_data = g_new0 (MsIconData, ico.icon_count);
image_ID = ico_to_gimp (&ico);
D(("*** %s: Microsoft icon file, containing %i icon(s)\n",
ico.filename, ico.icon_count));
for (i = 0; i < ico.icon_count; i++)
ico_read_entry (&ico, &ico.icon_dir[i]);
/* Do a quick scan of the icons in the file to find the largest icon */
for (i = 0; i < ico.icon_count; i++)
{
if (ico.icon_dir[i].width > width)
width = ico.icon_dir[i].width;
if (ico.icon_dir[i].height > height)
height = ico.icon_dir[i].height;
}
for (i = 0; i < ico.icon_count; i++)
ico_read_data (&ico, i);
if (width < 1 || height < 1)
return -1;
image = gimp_image_new (width, height, GIMP_RGB);
gimp_image_set_filename (image, ico.filename);
/* Scan icons again and set up a layer for each icon */
layer = ico_load_layer (image, &ico, 0);
for (i = 1; i < ico.icon_count; i++)
ico_load_layer (image, &ico, i);
gimp_image_set_active_layer (image, layer);
D(("*** icon successfully loaded.\n\n"));
gimp_progress_update (1.0);
ico_cleanup (&ico);
return image_ID;
return image;
}
gint32