*
* Copyright 2026 Alexander Vanhee
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "config.h"
#include "bz-banner-view.h"
#include "bz-async-texture.h"
#include "bz-curated-image-info.h"
struct _BzBannerView
{
AdwBin parent_instance;
BzCuratedBanner *banner;
AdwStyleManager *style_manager;
GtkCssProvider *css_provider;
char *instance_class;
GtkBox *box;
GtkPicture *picture;
};
G_DEFINE_FINAL_TYPE (BzBannerView, bz_banner_view, ADW_TYPE_BIN)
enum
{
PROP_0,
PROP_BANNER,
LAST_PROP
};
static GParamSpec *props[LAST_PROP] = { 0 };
static void
dark_changed (BzBannerView *self,
GParamSpec *pspec,
AdwStyleManager *mgr);
static void
refresh_background_color (BzBannerView *self,
AdwStyleManager *mgr);
static BzAsyncTexture *
choose_image (const char *default_variant_uri,
const char *light_variant_uri,
const char *dark_variant_uri);
static void
bz_banner_view_dispose (GObject *object)
{
BzBannerView *self = BZ_BANNER_VIEW (object);
g_signal_handlers_disconnect_by_func (
self->style_manager, dark_changed, self);
if (self->css_provider != NULL)
{
gtk_style_context_remove_provider_for_display (
gtk_widget_get_display (GTK_WIDGET (self)),
GTK_STYLE_PROVIDER (self->css_provider));
g_clear_object (&self->css_provider);
}
g_clear_pointer (&self->instance_class, g_free);
g_clear_object (&self->banner);
g_clear_object (&self->style_manager);
G_OBJECT_CLASS (bz_banner_view_parent_class)->dispose (object);
}
static void
bz_banner_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
BzBannerView *self = BZ_BANNER_VIEW (object);
switch (prop_id)
{
case PROP_BANNER:
g_value_set_object (value, bz_banner_view_get_banner (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
bz_banner_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
BzBannerView *self = BZ_BANNER_VIEW (object);
switch (prop_id)
{
case PROP_BANNER:
bz_banner_view_set_banner (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static gboolean
invert_boolean (gpointer object,
gboolean value)
{
return !value;
}
static gboolean
is_null (gpointer object,
GObject *value)
{
return value == NULL;
}
static BzAsyncTexture *
get_image (gpointer object,
BzCuratedImageInfo *info)
{
const char *image = NULL;
const char *light_image = NULL;
const char *dark_image = NULL;
if (!BZ_IS_CURATED_IMAGE_INFO (info))
return NULL;
image = bz_curated_image_info_get_uri (info);
light_image = bz_curated_image_info_get_light_uri (info);
dark_image = bz_curated_image_info_get_dark_uri (info);
return choose_image (image, light_image, dark_image);
}
static int
get_height (gpointer object,
int value)
{
if (value == 0)
return 250;
return CLAMP (value, 150, 400);
}
static void
bz_banner_view_class_init (BzBannerViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = bz_banner_view_dispose;
object_class->get_property = bz_banner_view_get_property;
object_class->set_property = bz_banner_view_set_property;
props[PROP_BANNER] =
g_param_spec_object (
"banner",
NULL, NULL,
BZ_TYPE_CURATED_BANNER,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, LAST_PROP, props);
g_type_ensure (BZ_TYPE_ASYNC_TEXTURE);
gtk_widget_class_set_template_from_resource (widget_class, "/io/github/kolunmi/Bazaar/bz-banner-view.ui");
gtk_widget_class_bind_template_child (widget_class, BzBannerView, picture);
gtk_widget_class_bind_template_child (widget_class, BzBannerView, box);
gtk_widget_class_bind_template_callback (widget_class, invert_boolean);
gtk_widget_class_bind_template_callback (widget_class, is_null);
gtk_widget_class_bind_template_callback (widget_class, get_image);
gtk_widget_class_bind_template_callback (widget_class, get_height);
}
static void
dark_changed (BzBannerView *self,
GParamSpec *pspec,
AdwStyleManager *mgr)
{
refresh_background_color (self, mgr);
if (self->banner != NULL)
g_object_notify (G_OBJECT (self->banner), "image");
}
static void
bz_banner_view_init (BzBannerView *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
self->style_manager = g_object_ref (
adw_style_manager_get_default ());
g_signal_connect_swapped (
self->style_manager,
"notify::dark",
G_CALLBACK (dark_changed),
self);
}
GtkWidget *
bz_banner_view_new (BzCuratedBanner *banner)
{
return g_object_new (
BZ_TYPE_BANNER_VIEW,
"banner", banner,
NULL);
}
void
bz_banner_view_set_banner (BzBannerView *self,
BzCuratedBanner *banner)
{
g_return_if_fail (BZ_IS_BANNER_VIEW (self));
g_return_if_fail (banner == NULL || BZ_IS_CURATED_BANNER (banner));
g_clear_object (&self->banner);
if (banner != NULL)
{
self->banner = g_object_ref (banner);
refresh_background_color (self, NULL);
}
g_object_notify_by_pspec (G_OBJECT (self), props[PROP_BANNER]);
}
BzCuratedBanner *
bz_banner_view_get_banner (BzBannerView *self)
{
g_return_val_if_fail (BZ_IS_BANNER_VIEW (self), NULL);
return self->banner;
}
static void
refresh_background_color (BzBannerView *self,
AdwStyleManager *mgr)
{
g_autofree char *css = NULL;
g_autofree char *light_color = NULL;
g_autofree char *dark_color = NULL;
const char *color = NULL;
if (self->banner == NULL)
return;
if (mgr == NULL)
mgr = adw_style_manager_get_default ();
g_object_get (
self->banner,
"light-color", &light_color,
"dark-color", &dark_color,
NULL);
color = adw_style_manager_get_dark (mgr) ? dark_color : light_color;
if (color == NULL)
return;
if (self->instance_class == NULL)
{
self->instance_class = g_strdup_printf (
"bz-banner-%p", (void *) self);
gtk_widget_add_css_class (GTK_WIDGET (self->box), "card");
gtk_widget_add_css_class (GTK_WIDGET (self->box), self->instance_class);
}
css = g_strdup_printf (".card.%s { background: %s; }",
self->instance_class, color);
if (self->css_provider == NULL)
{
self->css_provider = gtk_css_provider_new ();
gtk_style_context_add_provider_for_display (
gtk_widget_get_display (GTK_WIDGET (self->box)),
GTK_STYLE_PROVIDER (self->css_provider),
GTK_STYLE_PROVIDER_PRIORITY_USER);
}
gtk_css_provider_load_from_string (self->css_provider, css);
}
static BzAsyncTexture *
choose_image (const char *default_variant_uri,
const char *light_variant_uri,
const char *dark_variant_uri)
{
gboolean is_dark = FALSE;
const char *uri = NULL;
g_autoptr (GFile) source = NULL;
is_dark = adw_style_manager_get_dark (adw_style_manager_get_default ());
if (is_dark)
uri = dark_variant_uri;
else
uri = light_variant_uri;
if (uri == NULL)
uri = default_variant_uri;
if (uri == NULL)
return NULL;
source = g_file_new_for_uri (uri);
return bz_async_texture_new_lazy (source, NULL);
}
