/**
* gwy_layer_basic_set_gradient:
* @layer: A basic data view layer.
* @gradient: Name of gradient @layer should use. It should exist.
*
* Sets the color gradient a basic layer should use.
*
* Since: 1.8
**/
void
gwy_layer_basic_set_gradient(GwyLayerBasic *layer,
const gchar *gradient)
{
GwyGradient *grad, *old;
gchar *gradstr;
g_return_if_fail(GWY_IS_LAYER_BASIC(layer));
gwy_debug("%s", gradient);
grad = gwy_gradients_get_gradient(gradient);
if (!grad || grad == layer->gradient)
return;
/* the string we've got as argument can be owned by somethin we are
* going to destroy */
gradstr = g_strdup(gradient);
old = layer->gradient;
g_signal_handlers_disconnect_matched(layer->gradient, G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, layer);
g_object_ref(grad);
layer->gradient = grad;
g_signal_connect_swapped(layer->gradient, "value_changed",
G_CALLBACK(gwy_layer_basic_update), layer);
gwy_container_set_string_by_name(GWY_DATA_VIEW_LAYER(layer)->data,
"/0/base/palette", gradstr);
g_object_unref(old);
/* XXX: remove */
if (!gwy_palette_set_by_name(layer->palette, gradstr))
g_warning("Palette <%s> doesn't exist, we've got out of sync",
gradstr);
gwy_layer_basic_update(GWY_DATA_VIEW_LAYER(layer));
}
/**
* gwy_color_axis_set_gradient:
* @axis: A color axis.
* @gradient: Name of gradient @axis should use. It should exist.
*
* Sets the color gradient a color axis should use.
*
* Since: 1.8
**/
void
gwy_color_axis_set_gradient(GwyColorAxis *axis,
const gchar *gradient)
{
GwyGradient *grad, *old;
g_return_if_fail(GWY_IS_COLOR_AXIS(axis));
grad = gwy_gradients_get_gradient(gradient);
if (!grad || grad == axis->gradient)
return;
old = axis->gradient;
g_signal_handlers_disconnect_matched(axis->gradient, G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, axis);
g_object_ref(grad);
axis->gradient = grad;
g_signal_connect_swapped(axis->gradient, "value_changed",
G_CALLBACK(gwy_color_axis_update), axis);
g_object_unref(old);
/* XXX: remove */
gwy_palette_set_by_name(axis->palette, gradient);
gwy_color_axis_update(axis);
}
/* FIXME: this should be the default constructor */
GtkWidget*
gwy_color_axis_new_default(GtkOrientation orientation)
{
GwyColorAxis *axis;
gwy_debug(" ");
axis = (GwyColorAxis*)g_object_new(GWY_TYPE_COLOR_AXIS, NULL);
axis->orientation = orientation;
/* TODO: use some font properties, at least */
if (orientation == GTK_ORIENTATION_VERTICAL)
axis->par.textarea = 70;
else
axis->par.textarea = 20;
axis->min = 0.0;
axis->max = 1.0;
axis->par.font = pango_font_description_from_string("Helvetica 10");
axis->gradient = gwy_gradients_get_gradient(GWY_GRADIENT_DEFAULT);
g_object_ref(axis->gradient);
/* XXX: remove */
axis->palette = (GwyPalette*)gwy_palette_new(NULL);
axis->siunit = GWY_SI_UNIT(gwy_si_unit_new("m"));
return GTK_WIDGET(axis);
}
static void
gwy_layer_basic_gradient_connect(GwyLayerBasic *basic_layer)
{
GwyDataViewLayer *layer;
const guchar *s = NULL;
g_return_if_fail(!basic_layer->gradient);
layer = GWY_DATA_VIEW_LAYER(basic_layer);
if (basic_layer->gradient_key)
gwy_container_gis_string(layer->data, basic_layer->gradient_key, &s);
basic_layer->gradient = gwy_gradients_get_gradient(s);
gwy_resource_use(GWY_RESOURCE(basic_layer->gradient));
basic_layer->gradient_id
= g_signal_connect_swapped(basic_layer->gradient, "data-changed",
G_CALLBACK(gwy_layer_basic_changed), layer);
}
static void
immerse_update_detail_pixbuf(ImmerseControls *controls)
{
GwyContainer *data;
GwyDataField *dfield;
GwyGradient *gradient;
GdkPixbuf *pixbuf;
const guchar *name;
gchar *key;
GQuark quark;
gint w, h, xres, yres;
GWY_OBJECT_UNREF(controls->detail);
data = gwy_app_data_browser_get(controls->args->detail.datano);
if (!data)
return;
quark = gwy_app_get_data_key_for_id(controls->args->detail.id);
dfield = gwy_container_get_object(data, quark);
gwy_data_view_coords_real_to_xy(GWY_DATA_VIEW(controls->view),
gwy_data_field_get_xreal(dfield),
gwy_data_field_get_yreal(dfield),
&w, &h);
gwy_debug("%dx%d", w, h);
w = MAX(w, 2);
h = MAX(h, 2);
key = g_strdup_printf("/%d/base/palette", controls->args->image.id);
name = NULL;
data = gwy_app_data_browser_get(controls->args->image.datano);
gwy_container_gis_string_by_name(data, key, &name);
g_free(key);
gradient = gwy_gradients_get_gradient(name);
/* Handle real-square properly by using an intermediate
* pixel-square pixbuf with sufficient resolution */
xres = gwy_data_field_get_xres(dfield);
yres = gwy_data_field_get_yres(dfield);
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, xres, yres);
gwy_pixbuf_draw_data_field(pixbuf, dfield, gradient);
controls->detail = gdk_pixbuf_scale_simple(pixbuf, w, h, GDK_INTERP_TILES);
g_object_unref(pixbuf);
}
/**
* gwy_layer_basic_new:
*
* Creates a new basic data displaying layer.
*
* By default, is uses a gray gradient or gradient whose name is stored with
* the data as "/0/base/palette".
*
* Other used container values: "/0/show" is shown instead of "/0/data" if
* present. If "/0/base/min" and "/0/base/max" is set, it is used as the
* color scale range instead of fitting it to data value range.
*
* Returns: The newly created layer.
**/
GtkObject*
gwy_layer_basic_new(void)
{
GtkObject *object;
GwyLayerBasic *layer;
gwy_debug(" ");
object = g_object_new(GWY_TYPE_LAYER_BASIC, NULL);
layer = (GwyLayerBasic*)object;
layer->gradient = gwy_gradients_get_gradient(GWY_GRADIENT_DEFAULT);
g_object_ref(layer->gradient);
/* XXX: remove */
layer->palette = (GwyPalette*)gwy_palette_new(NULL);
gwy_palette_set_by_name(layer->palette, GWY_GRADIENT_DEFAULT);
return object;
}
/**
* gwy_color_axis_new:
* @orientation: The orientation of the axis.
* @min: The minimum.
* @max: The maximum.
* @pal: The palette the color axis should use.
*
* Creates a new color axis.
*
* Returns: The newly created color axis as a #GtkWidget.
**/
GtkWidget*
gwy_color_axis_new(GtkOrientation orientation,
gdouble min,
gdouble max,
GwyPalette *pal)
{
GwyColorAxis *axis;
gwy_debug("");
g_return_val_if_fail(GWY_IS_PALETTE(pal), NULL);
axis = gtk_type_new(gwy_color_axis_get_type());
axis->orientation = orientation;
/* TODO: use some font properties, at least */
if (orientation == GTK_ORIENTATION_VERTICAL)
axis->par.textarea = 70;
else
axis->par.textarea = 20;
axis->min = min;
axis->max = max;
/* XXX */
axis->par.font = pango_font_description_new();
pango_font_description_set_family(axis->par.font, "Helvetica");
pango_font_description_set_style(axis->par.font, PANGO_STYLE_NORMAL);
pango_font_description_set_variant(axis->par.font, PANGO_VARIANT_NORMAL);
pango_font_description_set_weight(axis->par.font, PANGO_WEIGHT_NORMAL);
pango_font_description_set_size(axis->par.font, 10*PANGO_SCALE);
axis->gradient = gwy_gradients_get_gradient(GWY_GRADIENT_DEFAULT);
g_object_ref(axis->gradient);
/* XXX: remove */
axis->palette = (GwyPalette*)gwy_palette_new(NULL);
gwy_color_axis_set_palette(axis, pal);
axis->siunit = GWY_SI_UNIT(gwy_si_unit_new("m"));
return GTK_WIDGET(axis);
}
