1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #include "WidgetUtilsGtk.h" 7 8 namespace mozilla { 9 10 namespace widget { 11 IsTouchDeviceSupportPresent()12int32_t WidgetUtilsGTK::IsTouchDeviceSupportPresent() { 13 #if GTK_CHECK_VERSION(3, 4, 0) 14 int32_t result = 0; 15 GdkDisplay* display = gdk_display_get_default(); 16 if (!display) { 17 return 0; 18 } 19 20 GdkDeviceManager* manager = gdk_display_get_device_manager(display); 21 if (!manager) { 22 return 0; 23 } 24 25 GList* devices = 26 gdk_device_manager_list_devices(manager, GDK_DEVICE_TYPE_SLAVE); 27 GList* list = devices; 28 29 while (devices) { 30 GdkDevice* device = static_cast<GdkDevice*>(devices->data); 31 if (gdk_device_get_source(device) == GDK_SOURCE_TOUCHSCREEN) { 32 result = 1; 33 break; 34 } 35 devices = devices->next; 36 } 37 38 if (list) { 39 g_list_free(list); 40 } 41 42 return result; 43 #else 44 return 0; 45 #endif 46 } 47 48 } // namespace widget 49 50 } // namespace mozilla 51