C++ (Cpp) gimp_context_set_palette Examples

Example #1

File: convert-dialog.c Project: jdburton/gimp-osx

static GtkWidget *
convert_dialog_palette_box (IndexedDialog *dialog)
{
  Gimp        *gimp = dialog->image->gimp;
  GList       *list;
  GimpPalette *palette;
  GimpPalette *web_palette   = NULL;
  gboolean     default_found = FALSE;

  /* We can't dither to > 256 colors */
  dialog->container = gimp_container_filter (gimp->palette_factory->container,
                                             convert_dialog_palette_filter,
                                             NULL);

  if (gimp_container_is_empty (dialog->container))
    {
      g_object_unref (dialog->container);
      dialog->container = NULL;
      return NULL;
    }

  dialog->context = gimp_context_new (gimp, "convert-dialog", NULL);

  g_object_weak_ref (G_OBJECT (dialog->dialog),
                     (GWeakNotify) g_object_unref, dialog->context);

  g_object_weak_ref (G_OBJECT (dialog->dialog),
                     (GWeakNotify) g_object_unref, dialog->container);

  for (list = GIMP_LIST (dialog->container)->list;
       list;
       list = g_list_next (list))
    {
      palette = list->data;

      /* Preferentially, the initial default is 'Web' if available */
      if (web_palette == NULL &&
          g_ascii_strcasecmp (GIMP_OBJECT (palette)->name, "Web") == 0)
        {
          web_palette = palette;
        }

      if (saved_palette == palette)
        {
          dialog->custom_palette = saved_palette;
          default_found = TRUE;
        }
    }

  if (! default_found)
    {
      if (web_palette)
        dialog->custom_palette = web_palette;
      else
        dialog->custom_palette = GIMP_LIST (dialog->container)->list->data;
    }

  gimp_context_set_palette (dialog->context, dialog->custom_palette);

  g_signal_connect (dialog->context, "palette-changed",
                    G_CALLBACK (convert_dialog_palette_changed),
                    dialog);

  return gimp_palette_box_new (dialog->container, dialog->context, 4);
}

Example #2

File: pentpal.cpp Project: amichaelt/pentagram

bool loadPalette(Pentagram::Palette * pal, const ConvertShapeFormat * format)
{
	GimpRGB color;
	guchar palHack[2];
	palHack[1] = 255;
	bool newPal;
	const gchar * palName;

	for (int i = 0; i < 256; ++i)
	{
		palHack[0] = i;
		pal->native[i] = *((uint16 * ) palHack);
	}

	if (format == &PentagramShapeFormat)
	{
		palName = "Pentagram";
	}
	else if (format == &U8SKFShapeFormat)
	{
		palName = "U8SKF";
	}
	else if (format == &U8ShapeFormat)
	{
		palName = "Ultima8";
	}
	else if (format == &U82DShapeFormat)
	{
		palName = "Ultima8";
	}
	else if (format == &CrusaderShapeFormat)
	{
		palName = "Crusader";
	}
	else if (format == &Crusader2DShapeFormat)
	{
		palName = "Crusader";
	}
	else
	{
		return false;
	}

	newPal = ! gimp_context_set_palette(palName);
	if (newPal)
	{
		gint colors = 0;
		if (gimp_palette_get_info(palName, &colors))
		{
			newPal = false;
			if (colors != 256)
			{
				newPal = true;
				if (!gimp_palette_delete(palName))
					return false;
			}
		}
	}

	if (newPal)
	{
		if (g_ascii_strcasecmp(palName, gimp_palette_new(palName)))
			return false;
		if (!gimp_context_set_palette(palName))
			return false;

		IDataSource * ds = choosePalette();
		if (ds)
		{
			gint j = 0;
			ds->seek(4);
			pal->load(*ds);
			delete ds;
			for (gint i = 0; i < 256; ++i)
			{
				gimp_rgb_set_uchar(&color,
							pal->palette[i * 3],
							pal->palette[i * 3 + 1],
							pal->palette[i * 3 + 2]);
				gimp_palette_add_entry(palName, "Untitled", &color, &j);
				assert (j == i);
			}
		}
		else
		{
			return false;
		}
	}
	else
	{
		for (gint i = 0; i < 256; ++i)
		{
			gimp_palette_entry_get_color(palName, i, &color);
			gimp_rgb_get_uchar(&color,
						&(pal->palette[i * 3]),
						&(pal->palette[i * 3 + 1]),
						&(pal->palette[i * 3 + 2]));
		}
	}

	return true;
}