/* * Remmina - The GTK+ Remote Desktop Client * Copyright (C) 2009 - Vic Lee * Copyright (C) 2014-2015 Antenore Gatta, Fabio Castelli, Giovanni Panozzo * * 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 2 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., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * In addition, as a special exception, the copyright holders give * permission to link the code of portions of this program with the * OpenSSL library under certain conditions as described in each * individual source file, and distribute linked combinations * including the two. * You must obey the GNU General Public License in all respects * for all of the code used other than OpenSSL. * If you modify * file(s) with this exception, you may extend this exception to your * version of the file(s), but you are not obligated to do so. * If you * do not wish to do so, delete this exception statement from your * version. * If you delete this exception statement from all source * files in the program, then also delete it here. * */ #include #include "config.h" #include "remmina_scrolled_viewport.h" #include "remmina_pref.h" #include "remmina/remmina_trace_calls.h" G_DEFINE_TYPE( RemminaScrolledViewport, remmina_scrolled_viewport, GTK_TYPE_EVENT_BOX) /* Event handler when mouse move on borders */ static gboolean remmina_scrolled_viewport_motion_timeout(gpointer data) { TRACE_CALL("remmina_scrolled_viewport_motion_timeout"); RemminaScrolledViewport *gsv; GtkWidget *child; GdkDisplay *display; #if GTK_VERSION == 3 GdkDeviceManager *device_manager; GdkDevice *pointer; #endif GdkScreen *screen; gint x, y, mx, my, w, h; GtkAdjustment *adj; gdouble value; if (!REMMINA_IS_SCROLLED_VIEWPORT(data)) return FALSE; if (!GTK_IS_BIN(data)) return FALSE; gsv = REMMINA_SCROLLED_VIEWPORT(data); if (!gsv->viewport_motion) return FALSE; child = gtk_bin_get_child(GTK_BIN(gsv)); if (!GTK_IS_VIEWPORT(child)) return FALSE; display = gdk_display_get_default(); if (!display) return FALSE; #if GTK_VERSION == 3 device_manager = gdk_display_get_device_manager (display); pointer = gdk_device_manager_get_client_pointer (device_manager); gdk_device_get_position(pointer, &screen, &x, &y); #elif GTK_VERSION == 2 gdk_display_get_pointer(display, &screen, &x, &y, NULL); #endif w = gdk_screen_get_width(screen); h = gdk_screen_get_height(screen); mx = (x == 0 ? -1 : (x >= w - 1 ? 1 : 0)); my = (y == 0 ? -1 : (y >= h - 1 ? 1 : 0)); if (mx != 0) { gint step = MAX(10, MIN(remmina_pref.auto_scroll_step, w / 5)); #if GTK_VERSION == 3 adj = gtk_scrollable_get_hadjustment(GTK_SCROLLABLE(child)); #elif GTK_VERSION == 2 adj = gtk_viewport_get_hadjustment(GTK_VIEWPORT(child)); #endif value = gtk_adjustment_get_value(GTK_ADJUSTMENT(adj)) + (gdouble)(mx * step); value = MAX(0, MIN(value, gtk_adjustment_get_upper(GTK_ADJUSTMENT(adj)) - (gdouble) w + 2.0)); gtk_adjustment_set_value(GTK_ADJUSTMENT(adj), value); } if (my != 0) { gint step = MAX(10, MIN(remmina_pref.auto_scroll_step, h / 5)); #if GTK_VERSION == 3 adj = gtk_scrollable_get_vadjustment(GTK_SCROLLABLE(child)); #elif GTK_VERSION == 2 adj = gtk_viewport_get_vadjustment(GTK_VIEWPORT(child)); #endif value = gtk_adjustment_get_value(GTK_ADJUSTMENT(adj)) + (gdouble)(my * step); value = MAX(0, MIN(value, gtk_adjustment_get_upper(GTK_ADJUSTMENT(adj)) - (gdouble) h + 2.0)); gtk_adjustment_set_value(GTK_ADJUSTMENT(adj), value); } return TRUE; } static gboolean remmina_scrolled_viewport_enter(GtkWidget *widget, GdkEventCrossing *event, gpointer data) { TRACE_CALL("remmina_scrolled_viewport_enter"); remmina_scrolled_viewport_remove_motion(REMMINA_SCROLLED_VIEWPORT(widget)); return FALSE; } static gboolean remmina_scrolled_viewport_leave(GtkWidget *widget, GdkEventCrossing *event, gpointer data) { TRACE_CALL("remmina_scrolled_viewport_leave"); RemminaScrolledViewport *gsv = REMMINA_SCROLLED_VIEWPORT(widget); gsv->viewport_motion = TRUE; gsv->viewport_motion_handler = g_timeout_add(20, remmina_scrolled_viewport_motion_timeout, gsv); return FALSE; } static void remmina_scrolled_viewport_destroy(GtkWidget *widget, gpointer data) { TRACE_CALL("remmina_scrolled_viewport_destroy"); remmina_scrolled_viewport_remove_motion(REMMINA_SCROLLED_VIEWPORT(widget)); } static void remmina_scrolled_viewport_class_init(RemminaScrolledViewportClass *klass) { TRACE_CALL("remmina_scrolled_viewport_class_init"); } static void remmina_scrolled_viewport_init(RemminaScrolledViewport *gsv) { TRACE_CALL("remmina_scrolled_viewport_init"); } void remmina_scrolled_viewport_remove_motion(RemminaScrolledViewport *gsv) { TRACE_CALL("remmina_scrolled_viewport_remove_motion"); if (gsv->viewport_motion) { gsv->viewport_motion = FALSE; g_source_remove(gsv->viewport_motion_handler); gsv->viewport_motion_handler = 0; } } GtkWidget* remmina_scrolled_viewport_new(void) { TRACE_CALL("remmina_scrolled_viewport_new"); RemminaScrolledViewport *gsv; gsv = REMMINA_SCROLLED_VIEWPORT(g_object_new(REMMINA_TYPE_SCROLLED_VIEWPORT, NULL)); gsv->viewport_motion = FALSE; gsv->viewport_motion_handler = 0; gtk_widget_set_size_request(GTK_WIDGET(gsv), 1, 1); gtk_widget_add_events(GTK_WIDGET(gsv), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); g_signal_connect(G_OBJECT(gsv), "destroy", G_CALLBACK(remmina_scrolled_viewport_destroy), NULL); g_signal_connect(G_OBJECT(gsv), "enter-notify-event", G_CALLBACK(remmina_scrolled_viewport_enter), NULL); g_signal_connect(G_OBJECT(gsv), "leave-notify-event", G_CALLBACK(remmina_scrolled_viewport_leave), NULL); return GTK_WIDGET(gsv); }