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148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2016 Red Hat
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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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* Author: Carlos Garnacho <carlosg@gnome.org>
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*/
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/**
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* SECTION:gdkdevicepad
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* @Short_description: Pad device interface
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* @Title: GtkDevicePad
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*
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* #GdkDevicePad is an interface implemented by devices of type
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* %GDK_SOURCE_TABLET_PAD, it allows querying the features provided
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* by the pad device.
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*
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* Tablet pads may contain one or more groups, each containing a subset
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* of the buttons/rings/strips available. gdk_device_pad_get_n_groups()
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* can be used to obtain the number of groups, gdk_device_pad_get_n_features()
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* and gdk_device_pad_get_feature_group() can be combined to find out the
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* number of buttons/rings/strips the device has, and how are they grouped.
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*
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* Each of those groups have different modes, which may be used to map each
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* individual pad feature to multiple actions. Only one mode is effective
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* (current) for each given group, different groups may have different
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* current modes. The number of available modes in a group can be found
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* out through gdk_device_pad_get_group_n_modes(), and the current mode for
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* a given group will be notified through events of type #GDK_PAD_GROUP_MODE.
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*/
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/**
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* GdkDevicePad:
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*
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* The GdkDevicePad struct contains only private fields and
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* should not be accessed directly.
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*/
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#include "config.h"
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#include "gdkdevicepad.h"
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#include "gdkdevicepadprivate.h"
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#include "gdkdeviceprivate.h"
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G_DEFINE_INTERFACE (GdkDevicePad, gdk_device_pad, GDK_TYPE_DEVICE)
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static void
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gdk_device_pad_default_init (GdkDevicePadInterface *pad)
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{
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}
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/**
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* gdk_device_pad_get_n_groups:
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* @pad: a #GdkDevicePad
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*
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* Returns the number of groups this pad device has. Pads have
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* at least one group. A pad group is a subcollection of
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* buttons/strip/rings that is affected collectively by a same
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* current mode.
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*
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* Returns: The number of button/ring/strip groups in the pad.
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**/
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int
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gdk_device_pad_get_n_groups (GdkDevicePad *pad)
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{
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GdkDevicePadInterface *iface = GDK_DEVICE_PAD_GET_IFACE (pad);
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g_return_val_if_fail (GDK_IS_DEVICE_PAD (pad), 0);
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return iface->get_n_groups (pad);
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}
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/**
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* gdk_device_pad_get_group_n_modes:
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* @pad: a #GdkDevicePad
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* @group_idx: group to get the number of available modes from
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*
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* Returns the number of modes that @group may have.
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*
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* Returns: The number of modes available in @group.
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**/
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int
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gdk_device_pad_get_group_n_modes (GdkDevicePad *pad,
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int group_idx)
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{
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GdkDevicePadInterface *iface = GDK_DEVICE_PAD_GET_IFACE (pad);
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g_return_val_if_fail (GDK_IS_DEVICE_PAD (pad), 0);
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g_return_val_if_fail (group_idx >= 0, 0);
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return iface->get_group_n_modes (pad, group_idx);
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}
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/**
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* gdk_device_pad_get_n_features:
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* @pad: a #GdkDevicePad
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* @feature: a pad feature
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*
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* Returns the number of features a tablet pad has.
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*
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* Returns: The amount of elements of type @feature that this pad has.
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**/
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int
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gdk_device_pad_get_n_features (GdkDevicePad *pad,
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GdkDevicePadFeature feature)
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{
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GdkDevicePadInterface *iface = GDK_DEVICE_PAD_GET_IFACE (pad);
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g_return_val_if_fail (GDK_IS_DEVICE_PAD (pad), 0);
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return iface->get_n_features (pad, feature);
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}
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/**
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* gdk_device_pad_get_feature_group:
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* @pad: a #GdkDevicePad
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* @feature: the feature type to get the group from
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* @feature_idx: the index of the feature to get the group from
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*
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* Returns the group the given @feature and @idx belong to,
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* or -1 if feature/index do not exist in @pad.
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*
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* Returns: The group number of the queried pad feature.
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**/
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int
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gdk_device_pad_get_feature_group (GdkDevicePad *pad,
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GdkDevicePadFeature feature,
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int idx)
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{
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GdkDevicePadInterface *iface = GDK_DEVICE_PAD_GET_IFACE (pad);
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g_return_val_if_fail (GDK_IS_DEVICE_PAD (pad), -1);
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g_return_val_if_fail (idx >= 0, -1);
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return iface->get_feature_group (pad, feature, idx);
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}
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