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| 1 | /* |
| 2 | * gui_canvas.h - GUI, canvas |
| 3 | * |
| 4 | * Written 2009, 2010 by Werner Almesberger |
| 5 | * Copyright 2009, 2010 by Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | |
| 14 | #ifndef GUI_CANVAS_H |
| 15 | #define GUI_CANVAS_H |
| 16 | |
| 17 | #include <gtk/gtk.h> |
| 18 | |
| 19 | |
| 20 | /* |
| 21 | * "highlight" is invoked at the end of each redraw, for optional highlighting |
| 22 | * of objects. |
| 23 | */ |
| 24 | |
| 25 | extern void (*highlight)(void); |
| 26 | |
| 27 | |
| 28 | void refresh_pos(void); |
| 29 | |
| 30 | void redraw(void); |
| 31 | |
| 32 | void zoom_in_center(void); |
| 33 | void zoom_out_center(void); |
| 34 | void zoom_to_frame(void); |
| 35 | void zoom_to_extents(void); |
| 36 | |
| 37 | void canvas_frame_begin(struct frame *frame); |
| 38 | int canvas_frame_motion(struct frame *frame, int x, int y); |
| 39 | void canvas_frame_end(void); |
| 40 | int canvas_frame_drop(struct frame *frame, int x, int y); |
| 41 | |
| 42 | GtkWidget *make_canvas(void); |
| 43 | void init_canvas(void); |
| 44 | |
| 45 | #endif /* !GUI_CANVAS_H */ |
| 46 |
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