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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* Copyright © 2019 Alexander Mikhaylenko <exalm7659@gmail.com>
*
* This file is part of Epiphany.
*
* Epiphany 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.
*
* Epiphany 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 Epiphany. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ephy-pages-button.h"
/* Copied from GtkInspector code */
#define XFT_DPI_MULTIPLIER (96.0 * PANGO_SCALE)
#define FONT_SIZE_LARGE 8
#define FONT_SIZE_SMALL 6
struct _EphyPagesButton {
GtkButton parent_instance;
GtkLabel *pages_label;
GtkImage *pages_icon;
int n_pages;
};
G_DEFINE_TYPE (EphyPagesButton, ephy_pages_button, GTK_TYPE_BUTTON)
enum {
PROP_0,
PROP_N_PAGES,
N_PROPS
};
static GParamSpec *properties[N_PROPS];
/* FIXME: I hope there is a better way to prevent the label from changing scale */
static void
update_label_scale (EphyPagesButton *self,
GtkSettings *settings)
{
int xft_dpi;
PangoAttrList *attrs;
PangoAttribute *scale_attribute;
g_object_get (settings, "gtk-xft-dpi", &xft_dpi, NULL);
attrs = gtk_label_get_attributes (self->pages_label);
scale_attribute = pango_attr_scale_new (XFT_DPI_MULTIPLIER / xft_dpi);
pango_attr_list_change (attrs, scale_attribute);
}
static void
xft_dpi_changed (GtkSettings *settings,
GParamSpec *spec,
EphyPagesButton *self)
{
update_label_scale (self, settings);
}
static void
update_icon (EphyPagesButton *self)
{
gboolean is_overflow;
double font_size;
const char *icon_name;
g_autofree char *label_text = NULL;
PangoAttrList *attrs;
PangoAttribute *size_attribute;
g_assert (self->n_pages >= 0);
is_overflow = self->n_pages >= 100;
font_size = self->n_pages >= 10 ? FONT_SIZE_SMALL : FONT_SIZE_LARGE;
icon_name = is_overflow ? "ephy-tab-overflow-symbolic" : "ephy-tab-counter-symbolic";
label_text = g_strdup_printf ("%u", (guint)self->n_pages);
attrs = gtk_label_get_attributes (self->pages_label);
size_attribute = pango_attr_size_new (font_size * PANGO_SCALE);
pango_attr_list_change (attrs, size_attribute);
gtk_widget_set_visible (GTK_WIDGET (self->pages_label), !is_overflow);
gtk_label_set_text (self->pages_label, label_text);
gtk_image_set_from_icon_name (self->pages_icon, icon_name, GTK_ICON_SIZE_BUTTON);
}
EphyPagesButton *
ephy_pages_button_new (void)
{
return g_object_new (EPHY_TYPE_PAGES_BUTTON, NULL);
}
int
ephy_pages_button_get_n_pages (EphyPagesButton *self)
{
return self->n_pages;
}
void
ephy_pages_button_set_n_pages (EphyPagesButton *self,
int n_pages)
{
self->n_pages = n_pages;
update_icon (self);
}
static void
ephy_pages_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
EphyPagesButton *self = EPHY_PAGES_BUTTON (object);
switch (prop_id) {
case PROP_N_PAGES:
g_value_set_int (value, ephy_pages_button_get_n_pages (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
ephy_pages_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
EphyPagesButton *self = EPHY_PAGES_BUTTON (object);
switch (prop_id) {
case PROP_N_PAGES:
ephy_pages_button_set_n_pages (self, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
ephy_pages_button_constructed (GObject *object)
{
EphyPagesButton *self = EPHY_PAGES_BUTTON (object);
GtkSettings *settings;
G_OBJECT_CLASS (ephy_pages_button_parent_class)->constructed (object);
update_icon (self);
settings = gtk_settings_get_default ();
update_label_scale (self, settings);
g_signal_connect_object (settings, "notify::gtk-xft-dpi",
G_CALLBACK (xft_dpi_changed), self, 0);
}
static void
ephy_pages_button_class_init (EphyPagesButtonClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->get_property = ephy_pages_button_get_property;
object_class->set_property = ephy_pages_button_set_property;
object_class->constructed = ephy_pages_button_constructed;
properties [PROP_N_PAGES] =
g_param_spec_int ("n-pages",
"Number of pages",
"The number of pages displayed on the button",
0,
G_MAXINT,
1,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
gtk_widget_class_set_template_from_resource (widget_class,
"/org/gnome/epiphany/gtk/pages-button.ui");
gtk_widget_class_bind_template_child (widget_class, EphyPagesButton, pages_label);
gtk_widget_class_bind_template_child (widget_class, EphyPagesButton, pages_icon);
}
static void
ephy_pages_button_init (EphyPagesButton *self)
{
self->n_pages = 1;
gtk_widget_init_template (GTK_WIDGET (self));
}
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