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Extra quality thumbnails when the user manually asks for one to be 

Sun Jun  6 15:41:22 BST 1999 Adam D. Moss <adam@gimp.org>

	* app/fileops.c: Extra quality thumbnails when the user manually
	asks for one to be created.  Can now also generate one-shot
	previews for images on read-only media.
This commit is contained in:
BST 1999 Adam D. Moss 1999-06-06 14:56:45 +00:00 committed by Adam D. Moss
parent 343de341e3
commit 52ee2c0894
2 changed files with 189 additions and 67 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Sun Jun 6 15:41:22 BST 1999 Adam D. Moss <adam@gimp.org>
* app/fileops.c: Extra quality thumbnails when the user manually
asks for one to be created. Can now also generate one-shot
previews for images on read-only media.
Sun Jun 6 14:19:08 BST 1999 Andy Thomas <alt@gimp.org>

251
app/fileops.c
View File

@ -671,44 +671,10 @@ file_open (char *filename, char *raw_filename)
}
static gboolean
file_save_thumbnail (GimpImage* gimage,
const char *full_source_filename)
{
TempBuf* tempbuf;
gint i,j;
unsigned char* tbd;
gchar* pathname;
gchar* filename;
gchar* xvpathname;
gchar* thumbnailname;
static TempBuf*
make_thumb_tempbuf (GimpImage* gimage)
{
gint w,h;
GimpImageBaseType basetype;
FILE* fp;
struct stat statbuf;
if (stat(full_source_filename, &statbuf) != 0)
{
return FALSE;
}
if (gimp_image_preview_valid (gimage, GRAY_CHANNEL))
{
/* just for debugging */
printf("(incidentally, gimage already has a valid preview - %dx%d)\n",
gimage->comp_preview->width,
gimage->comp_preview->height);
}
pathname = g_dirname(full_source_filename);
filename = g_basename(full_source_filename); /* Don't free! */
xvpathname = g_strconcat(pathname, G_DIR_SEPARATOR_S, ".xvpics",
NULL);
thumbnailname = g_strconcat (xvpathname, G_DIR_SEPARATOR_S,
filename,
NULL);
if (gimage->width<=80 && gimage->height<=60)
{
@ -736,7 +702,119 @@ file_save_thumbnail (GimpImage* gimage,
/*printf("tn: %d x %d -> ", w, h);fflush(stdout);*/
tempbuf = gimp_image_composite_preview (gimage, GRAY_CHANNEL, w, h);
return (gimp_image_composite_preview (gimage, GRAY_CHANNEL, w, h));
}
static guchar*
make_RGBbuf_from_tempbuf (TempBuf* tempbuf, gint* width_rtn, gint* height_rtn)
{
int i,j,w,h;
guchar* tbd;
guchar* ptr;
guchar* rtn = NULL;
guchar alpha,r,g,b;
w = (*width_rtn) = tempbuf->width;
h = (*height_rtn) = tempbuf->height;
tbd = temp_buf_data (tempbuf);
switch (tempbuf->bytes)
{
case 4:
rtn = ptr = g_malloc (3 * w * h);
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
r = *(tbd++);
g = *(tbd++);
b = *(tbd++);
alpha = *(tbd++);
if (alpha & 128)
{
*(ptr++) = r;
*(ptr++) = g;
*(ptr++) = b;
}
else
{
r = (( (i^j) & 4 ) << 5) | 64;
*(ptr++) = r;
*(ptr++) = r;
*(ptr++) = r;
}
}
}
break;
case 2:
rtn = ptr = g_malloc (3 * w * h);
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
r = *(tbd++);
alpha = *(tbd++);
if (!(alpha & 128))
r = (( (i^j) & 4 ) << 5) | 64;
*(ptr++) = r;
*(ptr++) = r;
*(ptr++) = r;
}
}
break;
default:
g_warning("UNKNOWN TempBuf width in make_RGBbuf_from_tempbuf()");
}
return(rtn);
}
static gboolean
file_save_thumbnail (GimpImage* gimage,
const char *full_source_filename,
TempBuf* tempbuf)
{
gint i,j;
gint w,h;
unsigned char* tbd;
gchar* pathname;
gchar* filename;
gchar* xvpathname;
gchar* thumbnailname;
GimpImageBaseType basetype;
FILE* fp;
struct stat statbuf;
if (stat(full_source_filename, &statbuf) != 0)
{
return FALSE;
}
if (gimp_image_preview_valid (gimage, GRAY_CHANNEL))
{
/* just for debugging */
printf("(incidentally, gimage already has a valid preview - %dx%d)\n",
gimage->comp_preview->width,
gimage->comp_preview->height);
}
pathname = g_dirname(full_source_filename);
filename = g_basename(full_source_filename); /* Don't free! */
xvpathname = g_strconcat(pathname, G_DIR_SEPARATOR_S, ".xvpics",
NULL);
thumbnailname = g_strconcat (xvpathname, G_DIR_SEPARATOR_S,
filename,
NULL);
tbd = temp_buf_data(tempbuf);
w = tempbuf->width;
@ -893,6 +971,8 @@ file_save (GimpImage* gimage,
if (return_val)
{
TempBuf* tempbuf;
/* set this image to clean */
gimage_clean_all (gimage);
@ -905,7 +985,8 @@ file_save (GimpImage* gimage,
attention --Adam */
/* gimage_set_save_proc(gimage, file_proc); */
file_save_thumbnail (gimage, filename);
tempbuf = make_thumb_tempbuf (gimage);
file_save_thumbnail (gimage, filename, tempbuf);
/* set the image title */
gimp_image_set_filename (gimage, filename);
@ -1009,11 +1090,11 @@ readXVThumb(const gchar *fnam,
/* don't call with preview_fullname as parameter! will be clobbered! */
static void
set_preview (const gchar* fullfname)
set_preview (const gchar* fullfname, guchar* RGB_source, gint RGB_w, gint RGB_h)
{
guchar *thumb_rgb;
guchar *raw_thumb;
gint tnw,tnh;
gint tnw,tnh, i;
gchar *pname;
gchar *fname;
gchar *tname;
@ -1056,44 +1137,70 @@ set_preview (const gchar* fullfname)
}
preview_fullname = g_strdup (fullfname);
if (raw_thumb)
if (RGB_source)
{
int i;
thumb_rgb = g_malloc (3 * tnw * tnh);
for (i=0; i<tnw*tnh; i++)
{
thumb_rgb[i*3 ] = ((raw_thumb[i]>>5)*255)/7;
thumb_rgb[i*3+1] = (((raw_thumb[i]>>2)&7)*255)/7;
thumb_rgb[i*3+2] = (((raw_thumb[i])&3)*255)/3;
}
gtk_preview_size (open_options_preview, RGB_w, RGB_h);
gtk_preview_size (open_options_preview, tnw, tnh);
for (i=0; i<tnh; i++)
for (i=0; i<RGB_h; i++)
{
gtk_preview_draw_row(open_options_preview, &thumb_rgb[3*i*tnw],
gtk_preview_draw_row(open_options_preview, &RGB_source[3*i*RGB_w],
0, i,
tnw);
RGB_w);
}
}
else
{
if (raw_thumb)
{
thumb_rgb = g_malloc (3 * tnw * tnh);
for (i=0; i<tnw*tnh; i++)
{
thumb_rgb[i*3 ] = ((raw_thumb[i]>>5)*255)/7;
thumb_rgb[i*3+1] = (((raw_thumb[i]>>2)&7)*255)/7;
thumb_rgb[i*3+2] = (((raw_thumb[i])&3)*255)/3;
}
gtk_preview_size (open_options_preview, tnw, tnh);
for (i=0; i<tnh; i++)
{
gtk_preview_draw_row(open_options_preview, &thumb_rgb[3*i*tnw],
0, i,
tnw);
}
g_free (thumb_rgb);
}
}
gtk_label_set_text (GTK_LABEL(open_options_label),
thumb_may_be_outdated ?
"(this thumbnail may be out of date)" :
(imginfo ? imginfo : "(no information)"));
if (raw_thumb || RGB_source) /* We can show *some* kind of preview. */
{
if (raw_thumb) /* Managed to commit thumbnail file to disk */
{
gtk_label_set_text (GTK_LABEL(open_options_label),
thumb_may_be_outdated ?
"(this thumbnail may be out of date)" :
(imginfo ? imginfo : "(no information)"));
}
else
{
gtk_label_set_text (GTK_LABEL(open_options_label),
"(could not write thumbnail file)");
}
gtk_widget_show (GTK_WIDGET(open_options_preview));
gtk_widget_queue_draw (GTK_WIDGET(open_options_preview));
show_generate_label = FALSE;
g_free (thumb_rgb);
g_free (raw_thumb);
}
else
{
if (imginfo)
g_free(imginfo);
gtk_widget_hide (GTK_WIDGET(open_options_preview));
gtk_label_set_text (GTK_LABEL(open_options_label),
"no preview available");
@ -1121,7 +1228,7 @@ file_open_clistrow_callback (GtkWidget *w,
fullfname = gtk_file_selection_get_filename(GTK_FILE_SELECTION(fileload));
gtk_widget_set_sensitive (GTK_WIDGET(open_options_frame), TRUE);
set_preview (fullfname);
set_preview (fullfname, NULL, 0, 0);
}
@ -1146,9 +1253,19 @@ genbutton_callback (GtkWidget *w,
g_basename(filename),
RUN_NONINTERACTIVE)))
{
file_save_thumbnail (gimage_to_be_thumbed, filename);
set_preview(filename);
guchar* RGBbuf;
gint RGBbuf_w, RGBbuf_h;
TempBuf* tempbuf;
tempbuf = make_thumb_tempbuf (gimage_to_be_thumbed);
RGBbuf = make_RGBbuf_from_tempbuf (tempbuf, &RGBbuf_w, &RGBbuf_h);
file_save_thumbnail (gimage_to_be_thumbed, filename, tempbuf);
set_preview (filename, RGBbuf, RGBbuf_w, RGBbuf_h);
gimage_delete (gimage_to_be_thumbed);
if (RGBbuf)
g_free (RGBbuf);
}
else
{
@ -1157,7 +1274,7 @@ genbutton_callback (GtkWidget *w,
}
gtk_widget_set_sensitive (GTK_WIDGET (fileload), TRUE);
gimp_remove_busy_cursors(NULL);
gimp_remove_busy_cursors (NULL);
g_free (filename);
}