104 lines
4.2 KiB
C
104 lines
4.2 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikamotionbuffer.h
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __PIKA_MOTION_BUFFER_H__
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#define __PIKA_MOTION_BUFFER_H__
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#include "core/pikaobject.h"
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#define PIKA_TYPE_MOTION_BUFFER (pika_motion_buffer_get_type ())
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#define PIKA_MOTION_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIKA_TYPE_MOTION_BUFFER, PikaMotionBuffer))
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#define PIKA_MOTION_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PIKA_TYPE_MOTION_BUFFER, PikaMotionBufferClass))
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#define PIKA_IS_MOTION_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), PIKA_TYPE_MOTION_BUFFER))
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#define PIKA_IS_MOTION_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PIKA_TYPE_MOTION_BUFFER))
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#define PIKA_MOTION_BUFFER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PIKA_TYPE_MOTION_BUFFER, PikaMotionBufferClass))
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typedef struct _PikaMotionBufferClass PikaMotionBufferClass;
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struct _PikaMotionBuffer
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{
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PikaObject parent_instance;
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guint32 last_read_motion_time;
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guint32 last_motion_time; /* previous time of a forwarded motion event */
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gdouble last_motion_delta_time;
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gdouble last_motion_delta_x;
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gdouble last_motion_delta_y;
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gdouble last_motion_distance;
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PikaCoords last_coords; /* last motion event */
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GArray *event_history;
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GArray *event_queue;
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gboolean event_delay; /* TRUE if there's an unsent event in
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* the history buffer
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*/
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gint event_delay_timeout;
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GdkModifierType last_active_state;
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};
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struct _PikaMotionBufferClass
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{
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PikaObjectClass parent_class;
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void (* stroke) (PikaMotionBuffer *buffer,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state);
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void (* hover) (PikaMotionBuffer *buffer,
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const PikaCoords *coords,
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GdkModifierType state,
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gboolean proximity);
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};
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GType pika_motion_buffer_get_type (void) G_GNUC_CONST;
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PikaMotionBuffer * pika_motion_buffer_new (void);
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void pika_motion_buffer_begin_stroke (PikaMotionBuffer *buffer,
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guint32 time,
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PikaCoords *last_motion);
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void pika_motion_buffer_end_stroke (PikaMotionBuffer *buffer);
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gboolean pika_motion_buffer_motion_event (PikaMotionBuffer *buffer,
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PikaCoords *coords,
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guint32 time,
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gboolean event_fill);
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guint32 pika_motion_buffer_get_last_motion_time (PikaMotionBuffer *buffer);
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void pika_motion_buffer_request_stroke (PikaMotionBuffer *buffer,
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GdkModifierType state,
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guint32 time);
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void pika_motion_buffer_request_hover (PikaMotionBuffer *buffer,
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GdkModifierType state,
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gboolean proximity);
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#endif /* __PIKA_MOTION_BUFFER_H__ */
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