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Diffstat (limited to '')
| -rw-r--r-- | app/display/gimpmotionbuffer.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/app/display/gimpmotionbuffer.h b/app/display/gimpmotionbuffer.h new file mode 100644 index 0000000..c7aee64 --- /dev/null +++ b/app/display/gimpmotionbuffer.h @@ -0,0 +1,99 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpmotionbuffer.h + * + * 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 3 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, see <https://www.gnu.org/licenses/>. + */ + +#ifndef __GIMP_MOTION_BUFFER_H__ +#define __GIMP_MOTION_BUFFER_H__ + + +#include "core/gimpobject.h" + + +#define GIMP_TYPE_MOTION_BUFFER (gimp_motion_buffer_get_type ()) +#define GIMP_MOTION_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_MOTION_BUFFER, GimpMotionBuffer)) +#define GIMP_MOTION_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_MOTION_BUFFER, GimpMotionBufferClass)) +#define GIMP_IS_MOTION_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_MOTION_BUFFER)) +#define GIMP_IS_MOTION_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_MOTION_BUFFER)) +#define GIMP_MOTION_BUFFER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_MOTION_BUFFER, GimpMotionBufferClass)) + + +typedef struct _GimpMotionBufferClass GimpMotionBufferClass; + +struct _GimpMotionBuffer +{ + GimpObject parent_instance; + + guint32 last_read_motion_time; + + guint32 last_motion_time; /* previous time of a forwarded motion event */ + gdouble last_motion_delta_time; + gdouble last_motion_delta_x; + gdouble last_motion_delta_y; + gdouble last_motion_distance; + + GimpCoords last_coords; /* last motion event */ + + GArray *event_history; + GArray *event_queue; + gboolean event_delay; /* TRUE if there's an unsent event in + * the history buffer + */ + + gint event_delay_timeout; + GdkModifierType last_active_state; +}; + +struct _GimpMotionBufferClass +{ + GimpObjectClass parent_class; + + void (* stroke) (GimpMotionBuffer *buffer, + const GimpCoords *coords, + guint32 time, + GdkModifierType state); + void (* hover) (GimpMotionBuffer *buffer, + const GimpCoords *coords, + GdkModifierType state, + gboolean proximity); +}; + + +GType gimp_motion_buffer_get_type (void) G_GNUC_CONST; + +GimpMotionBuffer * gimp_motion_buffer_new (void); + +void gimp_motion_buffer_begin_stroke (GimpMotionBuffer *buffer, + guint32 time, + GimpCoords *last_motion); +void gimp_motion_buffer_end_stroke (GimpMotionBuffer *buffer); + +gboolean gimp_motion_buffer_motion_event (GimpMotionBuffer *buffer, + GimpCoords *coords, + guint32 time, + gboolean event_fill); +guint32 gimp_motion_buffer_get_last_motion_time (GimpMotionBuffer *buffer); + +void gimp_motion_buffer_request_stroke (GimpMotionBuffer *buffer, + GdkModifierType state, + guint32 time); +void gimp_motion_buffer_request_hover (GimpMotionBuffer *buffer, + GdkModifierType state, + gboolean proximity); + + +#endif /* __GIMP_MOTION_BUFFER_H__ */ |