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fa08d848ca
This is not used anymore now that surfaces are always toplevel in the semantics of GdkWindow where child windows were available. We can drop that and simplify the vfunc just a bit more. Fixes #2765
863 lines
26 KiB
C
863 lines
26 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gdkx11device-xi2.h"
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#include "gdkdeviceprivate.h"
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#include "gdkintl.h"
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#include "gdkasync.h"
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#include "gdkprivate-x11.h"
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#include "gdkdisplay-x11.h"
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/XInput2.h>
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#include <math.h>
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typedef struct _ScrollValuator ScrollValuator;
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struct _ScrollValuator
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{
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guint n_valuator : 4;
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guint direction : 4;
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guint last_value_valid : 1;
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gdouble last_value;
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gdouble increment;
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};
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struct _GdkX11DeviceXI2
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{
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GdkDevice parent_instance;
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gint device_id;
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GArray *scroll_valuators;
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gdouble *last_axes;
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};
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struct _GdkX11DeviceXI2Class
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{
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GdkDeviceClass parent_class;
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};
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G_DEFINE_TYPE (GdkX11DeviceXI2, gdk_x11_device_xi2, GDK_TYPE_DEVICE)
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static void gdk_x11_device_xi2_finalize (GObject *object);
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static void gdk_x11_device_xi2_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gdk_x11_device_xi2_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gdk_x11_device_xi2_get_state (GdkDevice *device,
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GdkSurface *surface,
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gdouble *axes,
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GdkModifierType *mask);
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static void gdk_x11_device_xi2_set_surface_cursor (GdkDevice *device,
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GdkSurface *surface,
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GdkCursor *cursor);
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static void gdk_x11_device_xi2_query_state (GdkDevice *device,
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GdkSurface *surface,
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GdkSurface **child_surface,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask);
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static GdkGrabStatus gdk_x11_device_xi2_grab (GdkDevice *device,
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GdkSurface *surface,
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gboolean owner_events,
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GdkEventMask event_mask,
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GdkSurface *confine_to,
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GdkCursor *cursor,
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guint32 time_);
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static void gdk_x11_device_xi2_ungrab (GdkDevice *device,
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guint32 time_);
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static GdkSurface * gdk_x11_device_xi2_surface_at_position (GdkDevice *device,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask);
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enum {
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PROP_0,
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PROP_DEVICE_ID
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};
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static void
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gdk_x11_device_xi2_class_init (GdkX11DeviceXI2Class *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GdkDeviceClass *device_class = GDK_DEVICE_CLASS (klass);
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object_class->finalize = gdk_x11_device_xi2_finalize;
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object_class->get_property = gdk_x11_device_xi2_get_property;
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object_class->set_property = gdk_x11_device_xi2_set_property;
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device_class->get_state = gdk_x11_device_xi2_get_state;
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device_class->set_surface_cursor = gdk_x11_device_xi2_set_surface_cursor;
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device_class->query_state = gdk_x11_device_xi2_query_state;
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device_class->grab = gdk_x11_device_xi2_grab;
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device_class->ungrab = gdk_x11_device_xi2_ungrab;
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device_class->surface_at_position = gdk_x11_device_xi2_surface_at_position;
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g_object_class_install_property (object_class,
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PROP_DEVICE_ID,
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g_param_spec_int ("device-id",
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P_("Device ID"),
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P_("Device identifier"),
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0, G_MAXINT, 0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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}
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static void
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gdk_x11_device_xi2_init (GdkX11DeviceXI2 *device)
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{
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device->scroll_valuators = g_array_new (FALSE, FALSE, sizeof (ScrollValuator));
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}
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static void
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gdk_x11_device_xi2_finalize (GObject *object)
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{
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GdkX11DeviceXI2 *device = GDK_X11_DEVICE_XI2 (object);
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g_array_free (device->scroll_valuators, TRUE);
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g_free (device->last_axes);
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G_OBJECT_CLASS (gdk_x11_device_xi2_parent_class)->finalize (object);
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}
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static void
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gdk_x11_device_xi2_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
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switch (prop_id)
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{
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case PROP_DEVICE_ID:
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g_value_set_int (value, device_xi2->device_id);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gdk_x11_device_xi2_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (object);
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switch (prop_id)
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{
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case PROP_DEVICE_ID:
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device_xi2->device_id = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gdk_x11_device_xi2_get_state (GdkDevice *device,
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GdkSurface *surface,
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gdouble *axes,
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GdkModifierType *mask)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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if (axes)
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{
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GdkDisplay *display;
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XIDeviceInfo *info;
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gint i, j, ndevices;
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Screen *xscreen;
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display = gdk_device_get_display (device);
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xscreen = GDK_X11_SCREEN (GDK_X11_DISPLAY (display)->screen)->xscreen;
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gdk_x11_display_error_trap_push (display);
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info = XIQueryDevice (GDK_DISPLAY_XDISPLAY (display),
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device_xi2->device_id, &ndevices);
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gdk_x11_display_error_trap_pop_ignored (display);
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for (i = 0, j = 0; info && i < info->num_classes; i++)
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{
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XIAnyClassInfo *class_info = info->classes[i];
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GdkAxisUse use;
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gdouble value;
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if (class_info->type != XIValuatorClass)
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continue;
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value = ((XIValuatorClassInfo *) class_info)->value;
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use = gdk_device_get_axis_use (device, j);
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switch ((guint) use)
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{
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case GDK_AXIS_X:
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case GDK_AXIS_Y:
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case GDK_AXIS_IGNORE:
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{
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gint root_x, root_y;
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/* FIXME: Maybe root coords chaching should happen here */
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gdk_surface_get_origin (surface, &root_x, &root_y);
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_gdk_device_translate_screen_coord (device, surface,
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root_x, root_y,
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WidthOfScreen (xscreen),
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HeightOfScreen (xscreen),
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j, value,
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&axes[j]);
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}
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break;
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default:
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_gdk_device_translate_axis (device, j, value, &axes[j]);
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break;
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}
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j++;
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}
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if (info)
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XIFreeDeviceInfo (info);
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}
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if (mask)
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gdk_x11_device_xi2_query_state (device, surface,
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NULL,
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NULL, NULL,
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mask);
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}
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static void
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gdk_x11_device_xi2_set_surface_cursor (GdkDevice *device,
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GdkSurface *surface,
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GdkCursor *cursor)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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/* Non-master devices don't have a cursor */
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if (gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_MASTER)
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return;
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if (cursor)
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XIDefineCursor (GDK_SURFACE_XDISPLAY (surface),
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device_xi2->device_id,
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GDK_SURFACE_XID (surface),
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gdk_x11_display_get_xcursor (GDK_SURFACE_DISPLAY (surface), cursor));
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else
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XIUndefineCursor (GDK_SURFACE_XDISPLAY (surface),
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device_xi2->device_id,
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GDK_SURFACE_XID (surface));
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}
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static void
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gdk_x11_device_xi2_query_state (GdkDevice *device,
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GdkSurface *surface,
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GdkSurface **child_surface,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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GdkDisplay *display;
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GdkX11Screen *default_screen;
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Window xroot_window, xchild_window, xwindow;
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gdouble xroot_x, xroot_y, xwin_x, xwin_y;
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XIButtonState button_state;
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XIModifierState mod_state;
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XIGroupState group_state;
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int scale;
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display = gdk_device_get_display (device);
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default_screen = GDK_X11_DISPLAY (display)->screen;
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if (surface == NULL)
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{
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xwindow = GDK_DISPLAY_XROOTWIN (display);
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scale = default_screen->surface_scale;
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}
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else
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{
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xwindow = GDK_SURFACE_XID (surface);
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scale = GDK_X11_SURFACE (surface)->surface_scale;
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}
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if (gdk_device_get_device_type (device) == GDK_DEVICE_TYPE_SLAVE)
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{
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GdkDevice *master = gdk_device_get_associated_device (device);
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if (master)
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_gdk_device_query_state (master, surface, child_surface,
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win_x, win_y, mask);
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return;
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}
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if (!GDK_X11_DISPLAY (display)->trusted_client ||
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!XIQueryPointer (GDK_DISPLAY_XDISPLAY (display),
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device_xi2->device_id,
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xwindow,
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&xroot_window,
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&xchild_window,
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&xroot_x, &xroot_y,
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&xwin_x, &xwin_y,
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&button_state,
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&mod_state,
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&group_state))
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{
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XSetWindowAttributes attributes;
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Display *xdisplay;
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Window w;
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/* FIXME: untrusted clients not multidevice-safe */
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xdisplay = GDK_SCREEN_XDISPLAY (default_screen);
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xwindow = GDK_SCREEN_XROOTWIN (default_screen);
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w = XCreateWindow (xdisplay, xwindow, 0, 0, 1, 1, 0,
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CopyFromParent, InputOnly, CopyFromParent,
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0, &attributes);
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XIQueryPointer (xdisplay, device_xi2->device_id,
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w,
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&xroot_window,
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&xchild_window,
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&xroot_x, &xroot_y,
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&xwin_x, &xwin_y,
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&button_state,
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&mod_state,
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&group_state);
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XDestroyWindow (xdisplay, w);
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}
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if (child_surface)
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*child_surface = gdk_x11_surface_lookup_for_display (display, xchild_window);
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if (win_x)
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*win_x = xwin_x / scale;
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if (win_y)
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*win_y = xwin_y / scale;
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if (mask)
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*mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
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free (button_state.mask);
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}
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static GdkGrabStatus
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gdk_x11_device_xi2_grab (GdkDevice *device,
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GdkSurface *surface,
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gboolean owner_events,
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GdkEventMask event_mask,
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GdkSurface *confine_to,
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GdkCursor *cursor,
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guint32 time_)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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GdkX11DeviceManagerXI2 *device_manager_xi2;
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GdkDisplay *display;
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XIEventMask mask;
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Window xwindow;
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Cursor xcursor;
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gint status;
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display = gdk_device_get_display (device);
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device_manager_xi2 = GDK_X11_DEVICE_MANAGER_XI2 (GDK_X11_DISPLAY (display)->device_manager);
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/* FIXME: confine_to is actually unused */
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xwindow = GDK_SURFACE_XID (surface);
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if (!cursor)
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xcursor = None;
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else
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{
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xcursor = gdk_x11_display_get_xcursor (display, cursor);
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}
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mask.deviceid = device_xi2->device_id;
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mask.mask = _gdk_x11_device_xi2_translate_event_mask (device_manager_xi2,
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event_mask,
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&mask.mask_len);
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#ifdef G_ENABLE_DEBUG
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if (GDK_DISPLAY_DEBUG_CHECK (display, NOGRABS))
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status = GrabSuccess;
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else
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#endif
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status = XIGrabDevice (GDK_DISPLAY_XDISPLAY (display),
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device_xi2->device_id,
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xwindow,
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time_,
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xcursor,
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GrabModeAsync, GrabModeAsync,
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owner_events,
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&mask);
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g_free (mask.mask);
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_gdk_x11_display_update_grab_info (display, device, status);
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return _gdk_x11_convert_grab_status (status);
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}
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static void
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gdk_x11_device_xi2_ungrab (GdkDevice *device,
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guint32 time_)
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{
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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GdkDisplay *display;
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gulong serial;
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display = gdk_device_get_display (device);
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serial = NextRequest (GDK_DISPLAY_XDISPLAY (display));
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XIUngrabDevice (GDK_DISPLAY_XDISPLAY (display), device_xi2->device_id, time_);
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_gdk_x11_display_update_grab_info_ungrab (display, device, time_, serial);
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}
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static GdkSurface *
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gdk_x11_device_xi2_surface_at_position (GdkDevice *device,
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gdouble *win_x,
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gdouble *win_y,
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GdkModifierType *mask)
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{
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GdkX11Surface *impl;
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GdkX11DeviceXI2 *device_xi2 = GDK_X11_DEVICE_XI2 (device);
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GdkDisplay *display;
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GdkX11Screen *screen;
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Display *xdisplay;
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GdkSurface *surface;
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Window xwindow, root, child, last = None;
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gdouble xroot_x, xroot_y, xwin_x, xwin_y;
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XIButtonState button_state = { 0 };
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XIModifierState mod_state;
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XIGroupState group_state;
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Bool retval;
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display = gdk_device_get_display (device);
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screen = GDK_X11_DISPLAY (display)->screen;
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gdk_x11_display_error_trap_push (display);
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/* This function really only works if the mouse pointer is held still
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* during its operation. If it moves from one leaf window to another
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* than we'll end up with inaccurate values for win_x, win_y
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* and the result.
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*/
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gdk_x11_display_grab (display);
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xdisplay = GDK_SCREEN_XDISPLAY (screen);
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xwindow = GDK_SCREEN_XROOTWIN (screen);
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if (G_LIKELY (GDK_X11_DISPLAY (display)->trusted_client))
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{
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XIQueryPointer (xdisplay,
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device_xi2->device_id,
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xwindow,
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&root, &child,
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&xroot_x, &xroot_y,
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&xwin_x, &xwin_y,
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&button_state,
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&mod_state,
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&group_state);
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if (root == xwindow)
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xwindow = child;
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else
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xwindow = root;
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}
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else
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{
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gint width, height;
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GList *toplevels, *list;
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Window pointer_window;
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/* FIXME: untrusted clients case not multidevice-safe */
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pointer_window = None;
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toplevels = gdk_x11_display_get_toplevel_windows (display);
|
|
for (list = toplevels; list != NULL; list = list->next)
|
|
{
|
|
surface = GDK_SURFACE (list->data);
|
|
xwindow = GDK_SURFACE_XID (surface);
|
|
|
|
/* Free previous button mask, if any */
|
|
g_free (button_state.mask);
|
|
|
|
retval = XIQueryPointer (xdisplay,
|
|
device_xi2->device_id,
|
|
xwindow,
|
|
&root, &child,
|
|
&xroot_x, &xroot_y,
|
|
&xwin_x, &xwin_y,
|
|
&button_state,
|
|
&mod_state,
|
|
&group_state);
|
|
if (!retval)
|
|
continue;
|
|
|
|
if (child != None)
|
|
{
|
|
pointer_window = child;
|
|
break;
|
|
}
|
|
gdk_surface_get_geometry (surface, NULL, NULL, &width, &height);
|
|
if (xwin_x >= 0 && xwin_y >= 0 && xwin_x < width && xwin_y < height)
|
|
{
|
|
/* A childless toplevel, or below another window? */
|
|
XSetWindowAttributes attributes;
|
|
Window w;
|
|
|
|
free (button_state.mask);
|
|
|
|
w = XCreateWindow (xdisplay, xwindow, (int)xwin_x, (int)xwin_y, 1, 1, 0,
|
|
CopyFromParent, InputOnly, CopyFromParent,
|
|
0, &attributes);
|
|
XMapWindow (xdisplay, w);
|
|
XIQueryPointer (xdisplay,
|
|
device_xi2->device_id,
|
|
xwindow,
|
|
&root, &child,
|
|
&xroot_x, &xroot_y,
|
|
&xwin_x, &xwin_y,
|
|
&button_state,
|
|
&mod_state,
|
|
&group_state);
|
|
XDestroyWindow (xdisplay, w);
|
|
if (child == w)
|
|
{
|
|
pointer_window = xwindow;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (pointer_window != None)
|
|
break;
|
|
}
|
|
|
|
xwindow = pointer_window;
|
|
}
|
|
|
|
while (xwindow)
|
|
{
|
|
last = xwindow;
|
|
free (button_state.mask);
|
|
|
|
retval = XIQueryPointer (xdisplay,
|
|
device_xi2->device_id,
|
|
xwindow,
|
|
&root, &xwindow,
|
|
&xroot_x, &xroot_y,
|
|
&xwin_x, &xwin_y,
|
|
&button_state,
|
|
&mod_state,
|
|
&group_state);
|
|
if (!retval)
|
|
break;
|
|
|
|
if (last != root &&
|
|
(surface = gdk_x11_surface_lookup_for_display (display, last)) != NULL)
|
|
{
|
|
xwindow = last;
|
|
break;
|
|
}
|
|
}
|
|
|
|
gdk_x11_display_ungrab (display);
|
|
|
|
if (gdk_x11_display_error_trap_pop (display) == 0)
|
|
{
|
|
surface = gdk_x11_surface_lookup_for_display (display, last);
|
|
impl = NULL;
|
|
if (surface)
|
|
impl = GDK_X11_SURFACE (surface);
|
|
|
|
if (mask)
|
|
*mask = _gdk_x11_device_xi2_translate_state (&mod_state, &button_state, &group_state);
|
|
|
|
free (button_state.mask);
|
|
}
|
|
else
|
|
{
|
|
surface = NULL;
|
|
|
|
if (mask)
|
|
*mask = 0;
|
|
}
|
|
|
|
if (win_x)
|
|
*win_x = (surface) ? (xwin_x / impl->surface_scale) : -1;
|
|
|
|
if (win_y)
|
|
*win_y = (surface) ? (xwin_y / impl->surface_scale) : -1;
|
|
|
|
|
|
return surface;
|
|
}
|
|
|
|
guchar *
|
|
_gdk_x11_device_xi2_translate_event_mask (GdkX11DeviceManagerXI2 *device_manager_xi2,
|
|
GdkEventMask event_mask,
|
|
gint *len)
|
|
{
|
|
guchar *mask;
|
|
gint minor;
|
|
|
|
g_object_get (device_manager_xi2, "minor", &minor, NULL);
|
|
|
|
*len = XIMaskLen (XI_LASTEVENT);
|
|
mask = g_new0 (guchar, *len);
|
|
|
|
if (event_mask & GDK_POINTER_MOTION_MASK)
|
|
XISetMask (mask, XI_Motion);
|
|
|
|
if (event_mask & GDK_BUTTON_MOTION_MASK ||
|
|
event_mask & GDK_BUTTON1_MOTION_MASK ||
|
|
event_mask & GDK_BUTTON2_MOTION_MASK ||
|
|
event_mask & GDK_BUTTON3_MOTION_MASK)
|
|
{
|
|
XISetMask (mask, XI_ButtonPress);
|
|
XISetMask (mask, XI_ButtonRelease);
|
|
XISetMask (mask, XI_Motion);
|
|
}
|
|
|
|
if (event_mask & GDK_SCROLL_MASK)
|
|
{
|
|
XISetMask (mask, XI_ButtonPress);
|
|
XISetMask (mask, XI_ButtonRelease);
|
|
}
|
|
|
|
if (event_mask & GDK_BUTTON_PRESS_MASK)
|
|
XISetMask (mask, XI_ButtonPress);
|
|
|
|
if (event_mask & GDK_BUTTON_RELEASE_MASK)
|
|
XISetMask (mask, XI_ButtonRelease);
|
|
|
|
if (event_mask & GDK_KEY_PRESS_MASK)
|
|
XISetMask (mask, XI_KeyPress);
|
|
|
|
if (event_mask & GDK_KEY_RELEASE_MASK)
|
|
XISetMask (mask, XI_KeyRelease);
|
|
|
|
if (event_mask & GDK_ENTER_NOTIFY_MASK)
|
|
XISetMask (mask, XI_Enter);
|
|
|
|
if (event_mask & GDK_LEAVE_NOTIFY_MASK)
|
|
XISetMask (mask, XI_Leave);
|
|
|
|
if (event_mask & GDK_FOCUS_CHANGE_MASK)
|
|
{
|
|
XISetMask (mask, XI_FocusIn);
|
|
XISetMask (mask, XI_FocusOut);
|
|
}
|
|
|
|
#ifdef XINPUT_2_2
|
|
/* XInput 2.2 includes multitouch support */
|
|
if (minor >= 2 &&
|
|
event_mask & GDK_TOUCH_MASK)
|
|
{
|
|
XISetMask (mask, XI_TouchBegin);
|
|
XISetMask (mask, XI_TouchUpdate);
|
|
XISetMask (mask, XI_TouchEnd);
|
|
}
|
|
#endif /* XINPUT_2_2 */
|
|
|
|
return mask;
|
|
}
|
|
|
|
guint
|
|
_gdk_x11_device_xi2_translate_state (XIModifierState *mods_state,
|
|
XIButtonState *buttons_state,
|
|
XIGroupState *group_state)
|
|
{
|
|
guint state = 0;
|
|
|
|
if (mods_state)
|
|
state = mods_state->effective;
|
|
|
|
if (buttons_state)
|
|
{
|
|
gint len, i;
|
|
|
|
/* We're only interested in the first 3 buttons */
|
|
len = MIN (3, buttons_state->mask_len * 8);
|
|
|
|
for (i = 1; i <= len; i++)
|
|
{
|
|
if (!XIMaskIsSet (buttons_state->mask, i))
|
|
continue;
|
|
|
|
switch (i)
|
|
{
|
|
case 1:
|
|
state |= GDK_BUTTON1_MASK;
|
|
break;
|
|
case 2:
|
|
state |= GDK_BUTTON2_MASK;
|
|
break;
|
|
case 3:
|
|
state |= GDK_BUTTON3_MASK;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (group_state)
|
|
state |= (group_state->effective) << 13;
|
|
|
|
return state;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_device_xi2_add_scroll_valuator (GdkX11DeviceXI2 *device,
|
|
guint n_valuator,
|
|
GdkScrollDirection direction,
|
|
gdouble increment)
|
|
{
|
|
ScrollValuator scroll;
|
|
|
|
g_return_if_fail (GDK_IS_X11_DEVICE_XI2 (device));
|
|
g_return_if_fail (n_valuator < gdk_device_get_n_axes (GDK_DEVICE (device)));
|
|
|
|
scroll.n_valuator = n_valuator;
|
|
scroll.direction = direction;
|
|
scroll.last_value_valid = FALSE;
|
|
scroll.increment = increment;
|
|
|
|
g_array_append_val (device->scroll_valuators, scroll);
|
|
}
|
|
|
|
gboolean
|
|
_gdk_x11_device_xi2_get_scroll_delta (GdkX11DeviceXI2 *device,
|
|
guint n_valuator,
|
|
gdouble valuator_value,
|
|
GdkScrollDirection *direction_ret,
|
|
gdouble *delta_ret)
|
|
{
|
|
guint i;
|
|
|
|
g_return_val_if_fail (GDK_IS_X11_DEVICE_XI2 (device), FALSE);
|
|
g_return_val_if_fail (n_valuator < gdk_device_get_n_axes (GDK_DEVICE (device)), FALSE);
|
|
|
|
for (i = 0; i < device->scroll_valuators->len; i++)
|
|
{
|
|
ScrollValuator *scroll;
|
|
|
|
scroll = &g_array_index (device->scroll_valuators, ScrollValuator, i);
|
|
|
|
if (scroll->n_valuator == n_valuator)
|
|
{
|
|
if (direction_ret)
|
|
*direction_ret = scroll->direction;
|
|
|
|
if (delta_ret)
|
|
*delta_ret = 0;
|
|
|
|
if (scroll->last_value_valid)
|
|
{
|
|
if (delta_ret)
|
|
*delta_ret = (valuator_value - scroll->last_value) / scroll->increment;
|
|
|
|
scroll->last_value = valuator_value;
|
|
}
|
|
else
|
|
{
|
|
scroll->last_value = valuator_value;
|
|
scroll->last_value_valid = TRUE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_gdk_device_xi2_reset_scroll_valuators (GdkX11DeviceXI2 *device)
|
|
{
|
|
guint i;
|
|
|
|
for (i = 0; i < device->scroll_valuators->len; i++)
|
|
{
|
|
ScrollValuator *scroll;
|
|
|
|
scroll = &g_array_index (device->scroll_valuators, ScrollValuator, i);
|
|
scroll->last_value_valid = FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
_gdk_device_xi2_unset_scroll_valuators (GdkX11DeviceXI2 *device)
|
|
{
|
|
if (device->scroll_valuators->len > 0)
|
|
g_array_remove_range (device->scroll_valuators, 0,
|
|
device->scroll_valuators->len);
|
|
}
|
|
|
|
gint
|
|
_gdk_x11_device_xi2_get_id (GdkX11DeviceXI2 *device)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_X11_DEVICE_XI2 (device), 0);
|
|
|
|
return device->device_id;
|
|
}
|
|
|
|
gdouble
|
|
gdk_x11_device_xi2_get_last_axis_value (GdkX11DeviceXI2 *device,
|
|
gint n_axis)
|
|
{
|
|
if (n_axis >= gdk_device_get_n_axes (GDK_DEVICE (device)))
|
|
return 0;
|
|
|
|
if (!device->last_axes)
|
|
return 0;
|
|
|
|
return device->last_axes[n_axis];
|
|
}
|
|
|
|
void
|
|
gdk_x11_device_xi2_store_axes (GdkX11DeviceXI2 *device,
|
|
gdouble *axes,
|
|
gint n_axes)
|
|
{
|
|
g_free (device->last_axes);
|
|
|
|
if (axes && n_axes)
|
|
device->last_axes = g_memdup (axes, sizeof (gdouble) * n_axes);
|
|
else
|
|
device->last_axes = NULL;
|
|
}
|