GList *
gimp_palette_load (GimpContext *context,
GFile *file,
GInputStream *input,
GError **error)
{
GimpPalette *palette = NULL;
GimpPaletteEntry *entry;
GDataInputStream *data_input;
gchar *str;
gsize str_len;
gchar *tok;
gint r, g, b;
gint linenum;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
data_input = g_data_input_stream_new (input);
r = g = b = 0;
linenum = 1;
str_len = 1024;
str = gimp_data_input_stream_read_line_always (data_input, &str_len,
NULL, error);
if (! str)
goto failed;
if (! g_str_has_prefix (str, "GIMP Palette"))
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Missing magic header."));
g_free (str);
goto failed;
}
g_free (str);
palette = g_object_new (GIMP_TYPE_PALETTE,
"mime-type", "application/x-gimp-palette",
NULL);
linenum++;
str_len = 1024;
str = gimp_data_input_stream_read_line_always (data_input, &str_len,
NULL, error);
if (! str)
goto failed;
if (g_str_has_prefix (str, "Name: "))
{
gchar *utf8;
utf8 = gimp_any_to_utf8 (g_strstrip (str + strlen ("Name: ")), -1,
_("Invalid UTF-8 string in palette file '%s'"),
gimp_file_get_utf8_name (file));
gimp_object_take_name (GIMP_OBJECT (palette), utf8);
g_free (str);
linenum++;
str_len = 1024;
str = gimp_data_input_stream_read_line_always (data_input, &str_len,
NULL, error);
if (! str)
goto failed;
if (g_str_has_prefix (str, "Columns: "))
{
gint columns;
if (! gimp_ascii_strtoi (g_strstrip (str + strlen ("Columns: ")),
NULL, 10, &columns))
{
g_set_error (error, GIMP_DATA_ERROR, GIMP_DATA_ERROR_READ,
_("Invalid column count."));
g_free (str);
goto failed;
}
if (columns < 0 || columns > 256)
{
g_message (_("Reading palette file '%s': "
"Invalid number of columns in line %d. "
"Using default value."),
gimp_file_get_utf8_name (file), linenum);
columns = 0;
}
gimp_palette_set_columns (palette, columns);
g_free (str);
linenum++;
str_len = 1024;
str = gimp_data_input_stream_read_line_always (data_input, &str_len,
NULL, error);
if (! str)
goto failed;
}
}
else /* old palette format */
{
gimp_object_take_name (GIMP_OBJECT (palette),
g_path_get_basename (gimp_file_get_utf8_name (file)));
}
while (str)
{
GError *my_error = NULL;
if (str[0] != '#' && str[0] != '\0')
{
tok = strtok (str, " \t");
if (tok)
r = atoi (tok);
else
g_message (_("Reading palette file '%s': "
"Missing RED component in line %d."),
gimp_file_get_utf8_name (file), linenum);
tok = strtok (NULL, " \t");
if (tok)
g = atoi (tok);
else
g_message (_("Reading palette file '%s': "
"Missing GREEN component in line %d."),
gimp_file_get_utf8_name (file), linenum);
tok = strtok (NULL, " \t");
if (tok)
b = atoi (tok);
else
g_message (_("Reading palette file '%s': "
"Missing BLUE component in line %d."),
gimp_file_get_utf8_name (file), linenum);
/* optional name */
tok = strtok (NULL, "\n");
if (r < 0 || r > 255 ||
g < 0 || g > 255 ||
b < 0 || b > 255)
g_message (_("Reading palette file '%s': "
"RGB value out of range in line %d."),
gimp_file_get_utf8_name (file), linenum);
/* don't call gimp_palette_add_entry here, it's rather inefficient */
entry = g_slice_new0 (GimpPaletteEntry);
gimp_rgba_set_uchar (&entry->color,
(guchar) r,
(guchar) g,
(guchar) b,
255);
entry->name = g_strdup (tok ? tok : _("Untitled"));
entry->position = gimp_palette_get_n_colors (palette);
palette->colors = g_list_prepend (palette->colors, entry);
palette->n_colors++;
}
g_free (str);
linenum++;
str_len = 1024;
str = g_data_input_stream_read_line (data_input, &str_len,
NULL, &my_error);
if (! str && my_error)
{
g_message (_("Reading palette file '%s': "
"Read %d colors from truncated file: %s"),
gimp_file_get_utf8_name (file),
g_list_length (palette->colors),
my_error->message);
g_clear_error (&my_error);
}
}
palette->colors = g_list_reverse (palette->colors);
g_object_unref (data_input);
return g_list_prepend (NULL, palette);
failed:
g_object_unref (data_input);
if (palette)
g_object_unref (palette);
g_prefix_error (error, _("In line %d of palette file: "), linenum);
return NULL;
}
static void
gimp_view_renderer_palette_render (GimpViewRenderer *renderer,
GtkWidget *widget)
{
GimpViewRendererPalette *renderpal = GIMP_VIEW_RENDERER_PALETTE (renderer);
GimpPalette *palette;
GimpColorTransform *transform;
guchar *row;
guchar *dest;
GList *list;
gdouble cell_width;
gint grid_width;
gint dest_stride;
gint y;
palette = GIMP_PALETTE (renderer->viewable);
if (gimp_palette_get_n_colors (palette) == 0)
return;
grid_width = renderpal->draw_grid ? 1 : 0;
if (renderpal->cell_size > 0)
{
gint n_columns = gimp_palette_get_columns (palette);
if (n_columns > 0)
cell_width = MAX ((gdouble) renderpal->cell_size,
(gdouble) (renderer->width - grid_width) /
(gdouble) n_columns);
else
cell_width = renderpal->cell_size;
}
else
{
gint n_columns = gimp_palette_get_columns (palette);
if (n_columns > 0)
cell_width = ((gdouble) (renderer->width - grid_width) /
(gdouble) n_columns);
else
cell_width = (gdouble) (renderer->width - grid_width) / 16.0;
}
cell_width = MAX (4.0, cell_width);
renderpal->cell_width = cell_width;
renderpal->columns = (gdouble) (renderer->width - grid_width) / cell_width;
renderpal->rows = gimp_palette_get_n_colors (palette) / renderpal->columns;
if (gimp_palette_get_n_colors (palette) % renderpal->columns)
renderpal->rows += 1;
renderpal->cell_height = MAX (4, ((renderer->height - grid_width) /
renderpal->rows));
if (! renderpal->draw_grid)
renderpal->cell_height = MIN (renderpal->cell_height,
renderpal->cell_width);
list = gimp_palette_get_colors (palette);
if (! renderer->surface)
renderer->surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
renderer->width,
renderer->height);
cairo_surface_flush (renderer->surface);
row = g_new (guchar, renderer->width * 4);
dest = cairo_image_surface_get_data (renderer->surface);
dest_stride = cairo_image_surface_get_stride (renderer->surface);
transform = gimp_view_renderer_get_color_transform (renderer, widget,
babl_format ("cairo-RGB24"),
babl_format ("cairo-RGB24"));
for (y = 0; y < renderer->height; y++)
{
if ((y % renderpal->cell_height) == 0)
{
guchar r, g, b;
gint x;
gint n = 0;
guchar *d = row;
memset (row, renderpal->draw_grid ? 0 : 255, renderer->width * 4);
r = g = b = (renderpal->draw_grid ? 0 : 255);
for (x = 0; x < renderer->width; x++, d += 4)
{
if ((x % renderpal->cell_width) == 0)
{
if (list && n < renderpal->columns &&
renderer->width - x >= renderpal->cell_width)
{
GimpPaletteEntry *entry = list->data;
list = g_list_next (list);
n++;
gimp_rgb_get_uchar (&entry->color, &r, &g, &b);
}
else
{
r = g = b = (renderpal->draw_grid ? 0 : 255);
}
}
if (renderpal->draw_grid && (x % renderpal->cell_width) == 0)
{
GIMP_CAIRO_RGB24_SET_PIXEL (d, 0, 0, 0);
}
else
{
GIMP_CAIRO_RGB24_SET_PIXEL (d, r, g, b);
}
}
}
if (renderpal->draw_grid && (y % renderpal->cell_height) == 0)
{
memset (dest, 0, renderer->width * 4);
}
else
{
if (transform)
{
gimp_color_transform_process_pixels (transform,
babl_format ("cairo-RGB24"),
row,
babl_format ("cairo-RGB24"),
dest,
renderer->width);
}
else
{
memcpy (dest, row, renderer->width * 4);
}
}
dest += dest_stride;
}
g_free (row);
cairo_surface_mark_dirty (renderer->surface);
}
void
gimp_palette_editor_zoom (GimpPaletteEditor *editor,
GimpZoomType zoom_type)
{
GimpPalette *palette;
gdouble zoom_factor;
g_return_if_fail (GIMP_IS_PALETTE_EDITOR (editor));
palette = GIMP_PALETTE (GIMP_DATA_EDITOR (editor)->data);
if (! palette)
return;
zoom_factor = editor->zoom_factor;
switch (zoom_type)
{
case GIMP_ZOOM_IN_MAX:
case GIMP_ZOOM_IN_MORE:
case GIMP_ZOOM_IN:
zoom_factor += 0.1;
break;
case GIMP_ZOOM_OUT_MORE:
case GIMP_ZOOM_OUT:
zoom_factor -= 0.1;
break;
case GIMP_ZOOM_OUT_MAX:
case GIMP_ZOOM_TO: /* abused as ZOOM_ALL */
{
GtkWidget *scrolled_win = GIMP_DATA_EDITOR (editor)->view;
GtkWidget *viewport = gtk_bin_get_child (GTK_BIN (scrolled_win));
GtkAllocation allocation;
gint columns;
gint rows;
gtk_widget_get_allocation (viewport, &allocation);
columns = gimp_palette_get_columns (palette);
if (columns == 0)
columns = COLUMNS;
rows = gimp_palette_get_n_colors (palette) / columns;
if (gimp_palette_get_n_colors (palette) % columns)
rows += 1;
rows = MAX (1, rows);
zoom_factor = (((gdouble) allocation.height - 2 * SPACING) /
(gdouble) rows - SPACING) / ENTRY_HEIGHT;
}
break;
}
zoom_factor = CLAMP (zoom_factor, 0.1, 4.0);
editor->columns = gimp_palette_get_columns (palette);
if (editor->columns == 0)
editor->columns = COLUMNS;
palette_editor_resize (editor, editor->last_width, zoom_factor);
palette_editor_scroll_top_left (editor);
}
static void
palette_import_make_palette (ImportDialog *dialog)
{
GimpPalette *palette = NULL;
const gchar *palette_name;
gint n_colors;
gint n_columns;
gint threshold;
palette_name = gtk_entry_get_text (GTK_ENTRY (dialog->entry));
if (! palette_name || ! strlen (palette_name))
palette_name = _("Untitled");
n_colors = ROUND (gtk_adjustment_get_value (dialog->num_colors));
n_columns = ROUND (gtk_adjustment_get_value (dialog->columns));
threshold = ROUND (gtk_adjustment_get_value (dialog->threshold));
switch (dialog->import_type)
{
case GRADIENT_IMPORT:
{
GimpGradient *gradient;
gradient = gimp_context_get_gradient (dialog->context);
palette = gimp_palette_import_from_gradient (gradient,
dialog->context,
FALSE,
palette_name,
n_colors);
}
break;
case IMAGE_IMPORT:
{
GimpImage *image = gimp_context_get_image (dialog->context);
gboolean sample_merged;
gboolean selection_only;
sample_merged =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->sample_merged_toggle));
selection_only =
gtk_toggle_button_get_active
(GTK_TOGGLE_BUTTON (dialog->selection_only_toggle));
if (gimp_image_base_type (image) == GIMP_INDEXED)
{
palette = gimp_palette_import_from_indexed_image (image,
dialog->context,
palette_name);
}
else if (sample_merged)
{
palette = gimp_palette_import_from_image (image,
dialog->context,
palette_name,
n_colors,
threshold,
selection_only);
}
else
{
GimpDrawable *drawable;
drawable = GIMP_DRAWABLE (gimp_image_get_active_layer (image));
palette = gimp_palette_import_from_drawable (drawable,
dialog->context,
palette_name,
n_colors,
threshold,
selection_only);
}
}
break;
case FILE_IMPORT:
{
gchar *filename;
GError *error = NULL;
filename =
gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog->file_chooser));
palette = gimp_palette_import_from_file (dialog->context,
filename,
palette_name, &error);
g_free (filename);
if (! palette)
{
gimp_message_literal (dialog->context->gimp,
G_OBJECT (dialog->dialog), GIMP_MESSAGE_ERROR,
error->message);
g_error_free (error);
}
}
break;
}
if (palette)
{
if (dialog->palette)
g_object_unref (dialog->palette);
gimp_palette_set_columns (palette, n_columns);
gimp_view_set_viewable (GIMP_VIEW (dialog->preview),
GIMP_VIEWABLE (palette));
dialog->palette = palette;
}
gtk_widget_set_visible (dialog->no_colors_label,
dialog->palette &&
gimp_palette_get_n_colors (dialog->palette) > 0);
}
static gboolean
gimp_palette_view_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GimpPaletteView *view = GIMP_PALETTE_VIEW (widget);
GimpPalette *palette;
palette = GIMP_PALETTE (GIMP_VIEW (view)->renderer->viewable);
if (gtk_widget_get_can_focus (widget) &&
! gtk_widget_has_focus (widget))
{
gtk_widget_grab_focus (widget);
if (! view->selected &&
palette && gimp_palette_get_n_colors (palette) > 0)
{
GimpPaletteEntry *entry = gimp_palette_get_entry (palette, 0);
gimp_palette_view_select_entry (view, entry);
}
return TRUE;
}
if (view->selected)
{
GimpViewRendererPalette *renderer;
gint skip = 0;
renderer = GIMP_VIEW_RENDERER_PALETTE (GIMP_VIEW (view)->renderer);
switch (direction)
{
case GTK_DIR_UP:
skip = -renderer->columns;
break;
case GTK_DIR_DOWN:
skip = renderer->columns;
break;
case GTK_DIR_LEFT:
skip = -1;
break;
case GTK_DIR_RIGHT:
skip = 1;
break;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_TAB_BACKWARD:
return FALSE;
}
if (skip != 0)
{
GimpPaletteEntry *entry;
gint position;
position = view->selected->position + skip;
entry = gimp_palette_get_entry (palette, position);
if (entry)
gimp_palette_view_select_entry (view, entry);
}
return TRUE;
}
return FALSE;
}
