src/ringwelcomeview.cpp - jami-client-gnome - Gitiles

 /*
  *  Copyright (C) 2015-2016 Savoir-faire Linux Inc.
  *  Author: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com>
  *
  *  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, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
  */

 #include "ringwelcomeview.h"

 #include <gtk/gtk.h>
 #include <glib/gi18n.h>
 #include "utils/accounts.h"
 #include <account.h>
 #include <accountmodel.h>
 #include <qrencode.h>

 struct _RingWelcomeView
 {
     GtkScrolledWindow parent;
 };

 struct _RingWelcomeViewClass
 {
     GtkScrolledWindowClass parent_class;
 };

 typedef struct _RingWelcomeViewPrivate RingWelcomeViewPrivate;

 struct _RingWelcomeViewPrivate
 {
     QMetaObject::Connection ringaccount_updated;
 };

 G_DEFINE_TYPE_WITH_PRIVATE(RingWelcomeView, ring_welcome_view, GTK_TYPE_SCROLLED_WINDOW);

 #define RING_WELCOME_VIEW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), RING_WELCOME_VIEW_TYPE, RingWelcomeViewPrivate))

 static gboolean   draw_qrcode(GtkWidget*,cairo_t*,gpointer);
 static void       switch_qrcode(GtkWidget* qrcode);

 static void
 show_ring_id(GtkLabel *label, Account *account) {
     g_return_if_fail(label);

     gchar *text = nullptr;
     if (account) {
         if (!account->username().isEmpty()) {
             text = g_markup_printf_escaped("<span fgcolor=\"black\">%s</span>",
                                            account->username().toUtf8().constData());
         } else {
             g_warning("got ring account, but Ring id is empty");
             text = g_markup_printf_escaped("<span fgcolor=\"gray\">%s</span>",
                                            _("fetching RingID..."));
         }
     }
     gtk_label_set_markup(label, text);
     g_free(text);
 }

 static void
 ring_welcome_view_init(RingWelcomeView *self)
 {
     RingWelcomeViewPrivate *priv = RING_WELCOME_VIEW_GET_PRIVATE(self);

     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);

     auto box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 15);
     gtk_container_add(GTK_CONTAINER(self), box);
     gtk_box_set_baseline_position(GTK_BOX(box), GTK_BASELINE_POSITION_CENTER);
     gtk_widget_set_vexpand(GTK_WIDGET(box), TRUE);
     gtk_widget_set_hexpand(GTK_WIDGET(box), FALSE);
     gtk_widget_set_valign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
     gtk_widget_set_halign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
     gtk_widget_set_visible(GTK_WIDGET(box), TRUE);

     /* get logo */
     GError *error = NULL;
     GdkPixbuf* logo = gdk_pixbuf_new_from_resource_at_scale("/cx/ring/RingGnome/ring-logo-blue",
                                                             350, -1, TRUE, &error);
     if (logo == NULL) {
         g_debug("Could not load logo: %s", error->message);
         g_clear_error(&error);
     } else {
         auto image_ring_logo = gtk_image_new_from_pixbuf(logo);
         gtk_box_pack_start(GTK_BOX(box), image_ring_logo, FALSE, TRUE, 0);
         gtk_widget_set_visible(GTK_WIDGET(image_ring_logo), TRUE);
     }

     /* welcome text */
     auto label_welcome_text = gtk_label_new(_("Ring is a secure and distributed voice, video, and chat communication platform that requires no centralized server and leaves the power of privacy in the hands of the user."));
     gtk_label_set_justify(GTK_LABEL(label_welcome_text), GTK_JUSTIFY_CENTER);
     gtk_widget_override_font(label_welcome_text, pango_font_description_from_string("12"));
     gtk_label_set_line_wrap(GTK_LABEL(label_welcome_text), TRUE);
     /* the max width chars is to limit how much the text expands */
     gtk_label_set_max_width_chars(GTK_LABEL(label_welcome_text), 50);
     gtk_label_set_selectable(GTK_LABEL(label_welcome_text), TRUE);
     gtk_box_pack_start(GTK_BOX(box), label_welcome_text, FALSE, TRUE, 0);
     gtk_widget_set_visible(GTK_WIDGET(label_welcome_text), TRUE);

     /* RingID explanation */
     auto label_explanation = gtk_label_new(C_("Do not translate \"RingID\"", "This is your RingID.\nCopy and share it with your friends!"));
     auto context = gtk_widget_get_style_context(label_explanation);
     gtk_style_context_add_class(context, GTK_STYLE_CLASS_DIM_LABEL);
     gtk_label_set_justify(GTK_LABEL(label_explanation), GTK_JUSTIFY_CENTER);
     gtk_label_set_selectable(GTK_LABEL(label_explanation), TRUE);
     gtk_widget_set_margin_top(label_explanation, 20);
     /* we migth need to hide the label if a RING account doesn't exist */
     gtk_widget_set_no_show_all(label_explanation, TRUE);
     gtk_box_pack_start(GTK_BOX(box), label_explanation, FALSE, TRUE, 0);

     /* RingID label */
     auto label_ringid = gtk_label_new(NULL);
     gtk_label_set_selectable(GTK_LABEL(label_ringid), TRUE);
     gtk_widget_override_font(label_ringid, pango_font_description_from_string("monospace 12"));
     show_ring_id(GTK_LABEL(label_ringid), get_active_ring_account());
     gtk_widget_set_no_show_all(label_ringid, TRUE);
     gtk_box_pack_start(GTK_BOX(box), label_ringid, FALSE, TRUE, 0);
     gtk_label_set_ellipsize(GTK_LABEL(label_ringid), PANGO_ELLIPSIZE_END);

     /* QR drawing area */
     auto qr_ringid = gtk_drawing_area_new();
     auto qrsize = 200;
     gtk_widget_set_size_request (qr_ringid, qrsize, qrsize);
     gtk_widget_set_halign(qr_ringid, GTK_ALIGN_CENTER);
     g_signal_connect(qr_ringid, "draw", G_CALLBACK(draw_qrcode), NULL);
     gtk_widget_set_visible(qr_ringid, FALSE);

     /* QR code button */
     auto rcode_button = gtk_button_new_with_label("QR code");
     gtk_widget_set_hexpand(rcode_button, FALSE);
     gtk_widget_set_size_request(rcode_button,10,10);
     g_signal_connect_swapped(rcode_button, "clicked", G_CALLBACK(switch_qrcode), qr_ringid);
     gtk_widget_set_visible(rcode_button, TRUE);

     gtk_box_pack_start(GTK_BOX(box), rcode_button, TRUE, TRUE, 0);
     gtk_box_pack_start(GTK_BOX(box), qr_ringid, FALSE, TRUE, 0);

     if (get_active_ring_account()) {
         gtk_widget_show(label_explanation);
         gtk_widget_show(label_ringid);
     }

     priv-> ringaccount_updated = QObject::connect(
         &AccountModel::instance(),
         &AccountModel::dataChanged,
         [label_explanation, label_ringid] () {
             /* check if the active ring account has changed,
              * eg: if it was deleted */
             auto account = get_active_ring_account();
             show_ring_id(GTK_LABEL(label_ringid), get_active_ring_account());
             if (account) {
                 gtk_widget_show(label_explanation);
                 gtk_widget_show(label_ringid);

             } else {
                 gtk_widget_hide(label_explanation);
                 gtk_widget_hide(label_ringid);
             }
         }
     );

     gtk_widget_show(GTK_WIDGET(self));
 }

 static void
 ring_welcome_view_dispose(GObject *object)
 {
     RingWelcomeView *self = RING_WELCOME_VIEW(object);
     RingWelcomeViewPrivate *priv = RING_WELCOME_VIEW_GET_PRIVATE(self);

     QObject::disconnect(priv->ringaccount_updated);

     G_OBJECT_CLASS(ring_welcome_view_parent_class)->dispose(object);
 }

 static void
 ring_welcome_view_finalize(GObject *object)
 {
     G_OBJECT_CLASS(ring_welcome_view_parent_class)->finalize(object);
 }

 static void
 ring_welcome_view_class_init(RingWelcomeViewClass *klass)
 {
     G_OBJECT_CLASS(klass)->finalize = ring_welcome_view_finalize;
     G_OBJECT_CLASS(klass)->dispose = ring_welcome_view_dispose;
 }

 GtkWidget *
 ring_welcome_view_new()
 {
     gpointer self = g_object_new(RING_WELCOME_VIEW_TYPE, NULL);

     return (GtkWidget *)self;
 }

 static gboolean
 draw_qrcode(G_GNUC_UNUSED GtkWidget* diese,
             cairo_t*   cr,
             G_GNUC_UNUSED gpointer   data)
 {
     auto rcode = QRcode_encodeString(get_active_ring_account()->username().toStdString().c_str(),
                                       0, //Let the version be decided by libqrencode
                                       QR_ECLEVEL_L, // Lowest level of error correction
                                       QR_MODE_8, // 8-bit data mode
                                       1);

     if (!rcode) { // no rcode, no draw
         g_warning("Failed to generate QR code");
         return TRUE;
     }

     auto margin = 5;
     auto qrsize = 200;
     int qrwidth = rcode->width + margin * 2;

     /* scaling */
     auto scale = qrsize/qrwidth;
     cairo_scale(cr, scale, scale);

     /* fill the background in white */
     cairo_set_source_rgb(cr, 1, 1, 1);
     cairo_rectangle(cr, 0, 0, qrwidth, qrwidth);
     cairo_fill (cr);

     unsigned char *row, *p;
     p = rcode->data;
     cairo_set_source_rgb(cr, 0, 0, 0); // back in black
     for(int y = 0; y < rcode->width; y++) {
         row = (p + (y * rcode->width));
         for(int x = 0; x < rcode->width; x++) {
             if(*(row + x) & 0x1) {
                 cairo_rectangle(cr, margin + x, margin + y, 1, 1);
                 cairo_fill(cr);
             }
         }

     }

     QRcode_free(rcode);
     return TRUE;

 }

 static void
 switch_qrcode(GtkWidget* qrcode)
 {
     gtk_widget_set_visible(qrcode, !gtk_widget_get_visible(qrcode));
 }
	/*
	* Copyright (C) 2015-2016 Savoir-faire Linux Inc.
	* Author: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com>
	*
	* 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, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include "ringwelcomeview.h"

	#include <gtk/gtk.h>
	#include <glib/gi18n.h>
	#include "utils/accounts.h"
	#include <account.h>
	#include <accountmodel.h>
	#include <qrencode.h>

	struct _RingWelcomeView
	{
	GtkScrolledWindow parent;
	};

	struct _RingWelcomeViewClass
	{
	GtkScrolledWindowClass parent_class;
	};

	typedef struct _RingWelcomeViewPrivate RingWelcomeViewPrivate;

	struct _RingWelcomeViewPrivate
	{
	QMetaObject::Connection ringaccount_updated;
	};

	G_DEFINE_TYPE_WITH_PRIVATE(RingWelcomeView, ring_welcome_view, GTK_TYPE_SCROLLED_WINDOW);

	#define RING_WELCOME_VIEW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), RING_WELCOME_VIEW_TYPE, RingWelcomeViewPrivate))

	static gboolean draw_qrcode(GtkWidget,cairo_t,gpointer);
	static void switch_qrcode(GtkWidget* qrcode);

	static void
	show_ring_id(GtkLabel label, Account account) {
	g_return_if_fail(label);

	gchar *text = nullptr;
	if (account) {
	if (!account->username().isEmpty()) {
	text = g_markup_printf_escaped("<span fgcolor=\"black\">%s</span>",
	account->username().toUtf8().constData());
	} else {
	g_warning("got ring account, but Ring id is empty");
	text = g_markup_printf_escaped("<span fgcolor=\"gray\">%s</span>",
	_("fetching RingID..."));
	}
	}
	gtk_label_set_markup(label, text);
	g_free(text);
	}

	static void
	ring_welcome_view_init(RingWelcomeView *self)
	{
	RingWelcomeViewPrivate *priv = RING_WELCOME_VIEW_GET_PRIVATE(self);

	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(self), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);

	auto box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 15);
	gtk_container_add(GTK_CONTAINER(self), box);
	gtk_box_set_baseline_position(GTK_BOX(box), GTK_BASELINE_POSITION_CENTER);
	gtk_widget_set_vexpand(GTK_WIDGET(box), TRUE);
	gtk_widget_set_hexpand(GTK_WIDGET(box), FALSE);
	gtk_widget_set_valign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
	gtk_widget_set_halign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
	gtk_widget_set_visible(GTK_WIDGET(box), TRUE);

	/* get logo */
	GError *error = NULL;
	GdkPixbuf* logo = gdk_pixbuf_new_from_resource_at_scale("/cx/ring/RingGnome/ring-logo-blue",
	350, -1, TRUE, &error);
	if (logo == NULL) {
	g_debug("Could not load logo: %s", error->message);
	g_clear_error(&error);
	} else {
	auto image_ring_logo = gtk_image_new_from_pixbuf(logo);
	gtk_box_pack_start(GTK_BOX(box), image_ring_logo, FALSE, TRUE, 0);
	gtk_widget_set_visible(GTK_WIDGET(image_ring_logo), TRUE);
	}

	/* welcome text */
	auto label_welcome_text = gtk_label_new(_("Ring is a secure and distributed voice, video, and chat communication platform that requires no centralized server and leaves the power of privacy in the hands of the user."));
	gtk_label_set_justify(GTK_LABEL(label_welcome_text), GTK_JUSTIFY_CENTER);
	gtk_widget_override_font(label_welcome_text, pango_font_description_from_string("12"));
	gtk_label_set_line_wrap(GTK_LABEL(label_welcome_text), TRUE);
	/* the max width chars is to limit how much the text expands */
	gtk_label_set_max_width_chars(GTK_LABEL(label_welcome_text), 50);
	gtk_label_set_selectable(GTK_LABEL(label_welcome_text), TRUE);
	gtk_box_pack_start(GTK_BOX(box), label_welcome_text, FALSE, TRUE, 0);
	gtk_widget_set_visible(GTK_WIDGET(label_welcome_text), TRUE);

	/* RingID explanation */
	auto label_explanation = gtk_label_new(C_("Do not translate \"RingID\"", "This is your RingID.\nCopy and share it with your friends!"));
	auto context = gtk_widget_get_style_context(label_explanation);
	gtk_style_context_add_class(context, GTK_STYLE_CLASS_DIM_LABEL);
	gtk_label_set_justify(GTK_LABEL(label_explanation), GTK_JUSTIFY_CENTER);
	gtk_label_set_selectable(GTK_LABEL(label_explanation), TRUE);
	gtk_widget_set_margin_top(label_explanation, 20);
	/* we migth need to hide the label if a RING account doesn't exist */
	gtk_widget_set_no_show_all(label_explanation, TRUE);
	gtk_box_pack_start(GTK_BOX(box), label_explanation, FALSE, TRUE, 0);

	/* RingID label */
	auto label_ringid = gtk_label_new(NULL);
	gtk_label_set_selectable(GTK_LABEL(label_ringid), TRUE);
	gtk_widget_override_font(label_ringid, pango_font_description_from_string("monospace 12"));
	show_ring_id(GTK_LABEL(label_ringid), get_active_ring_account());
	gtk_widget_set_no_show_all(label_ringid, TRUE);
	gtk_box_pack_start(GTK_BOX(box), label_ringid, FALSE, TRUE, 0);
	gtk_label_set_ellipsize(GTK_LABEL(label_ringid), PANGO_ELLIPSIZE_END);

	/* QR drawing area */
	auto qr_ringid = gtk_drawing_area_new();
	auto qrsize = 200;
	gtk_widget_set_size_request (qr_ringid, qrsize, qrsize);
	gtk_widget_set_halign(qr_ringid, GTK_ALIGN_CENTER);
	g_signal_connect(qr_ringid, "draw", G_CALLBACK(draw_qrcode), NULL);
	gtk_widget_set_visible(qr_ringid, FALSE);

	/* QR code button */
	auto rcode_button = gtk_button_new_with_label("QR code");
	gtk_widget_set_hexpand(rcode_button, FALSE);
	gtk_widget_set_size_request(rcode_button,10,10);
	g_signal_connect_swapped(rcode_button, "clicked", G_CALLBACK(switch_qrcode), qr_ringid);
	gtk_widget_set_visible(rcode_button, TRUE);

	gtk_box_pack_start(GTK_BOX(box), rcode_button, TRUE, TRUE, 0);
	gtk_box_pack_start(GTK_BOX(box), qr_ringid, FALSE, TRUE, 0);

	if (get_active_ring_account()) {
	gtk_widget_show(label_explanation);
	gtk_widget_show(label_ringid);
	}

	priv-> ringaccount_updated = QObject::connect(
	&AccountModel::instance(),
	&AccountModel::dataChanged,
	[label_explanation, label_ringid] () {
	/* check if the active ring account has changed,
	* eg: if it was deleted */
	auto account = get_active_ring_account();
	show_ring_id(GTK_LABEL(label_ringid), get_active_ring_account());
	if (account) {
	gtk_widget_show(label_explanation);
	gtk_widget_show(label_ringid);

	} else {
	gtk_widget_hide(label_explanation);
	gtk_widget_hide(label_ringid);
	}
	}
	);

	gtk_widget_show(GTK_WIDGET(self));
	}

	static void
	ring_welcome_view_dispose(GObject *object)
	{
	RingWelcomeView *self = RING_WELCOME_VIEW(object);
	RingWelcomeViewPrivate *priv = RING_WELCOME_VIEW_GET_PRIVATE(self);

	QObject::disconnect(priv->ringaccount_updated);

	G_OBJECT_CLASS(ring_welcome_view_parent_class)->dispose(object);
	}

	static void
	ring_welcome_view_finalize(GObject *object)
	{
	G_OBJECT_CLASS(ring_welcome_view_parent_class)->finalize(object);
	}

	static void
	ring_welcome_view_class_init(RingWelcomeViewClass *klass)
	{
	G_OBJECT_CLASS(klass)->finalize = ring_welcome_view_finalize;
	G_OBJECT_CLASS(klass)->dispose = ring_welcome_view_dispose;
	}

	GtkWidget *
	ring_welcome_view_new()
	{
	gpointer self = g_object_new(RING_WELCOME_VIEW_TYPE, NULL);

	return (GtkWidget *)self;
	}

	static gboolean
	draw_qrcode(G_GNUC_UNUSED GtkWidget* diese,
	cairo_t* cr,
	G_GNUC_UNUSED gpointer data)
	{
	auto rcode = QRcode_encodeString(get_active_ring_account()->username().toStdString().c_str(),
	0, //Let the version be decided by libqrencode
	QR_ECLEVEL_L, // Lowest level of error correction
	QR_MODE_8, // 8-bit data mode
	1);

	if (!rcode) { // no rcode, no draw
	g_warning("Failed to generate QR code");
	return TRUE;
	}

	auto margin = 5;
	auto qrsize = 200;
	int qrwidth = rcode->width + margin * 2;

	/* scaling */
	auto scale = qrsize/qrwidth;
	cairo_scale(cr, scale, scale);

	/* fill the background in white */
	cairo_set_source_rgb(cr, 1, 1, 1);
	cairo_rectangle(cr, 0, 0, qrwidth, qrwidth);
	cairo_fill (cr);

	unsigned char row, p;
	p = rcode->data;
	cairo_set_source_rgb(cr, 0, 0, 0); // back in black
	for(int y = 0; y < rcode->width; y++) {
	row = (p + (y * rcode->width));
	for(int x = 0; x < rcode->width; x++) {
	if(*(row + x) & 0x1) {
	cairo_rectangle(cr, margin + x, margin + y, 1, 1);
	cairo_fill(cr);
	}
	}

	}

	QRcode_free(rcode);
	return TRUE;

	}

	static void
	switch_qrcode(GtkWidget* qrcode)
	{
	gtk_widget_set_visible(qrcode, !gtk_widget_get_visible(qrcode));
	}