1 /*
2 Copyright (C) 2012 Johan Mattsson
3
4 This library is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 3 of the
7 License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13 */
14 using Cairo;
15 using Math;
16
17 namespace BirdFont {
18
19 public class GlyphCanvas : GLib.Object {
20
21 /** Tab content. */
22 public static FontDisplay current_display;
23
24 public signal void signal_redraw_area (int x, int y, int w, int h);
25 public static WidgetAllocation allocation;
26
27 public GlyphCanvas () {
28 allocation = new WidgetAllocation ();
29 }
30
31 public static WidgetAllocation get_allocation () {
32 return allocation;
33 }
34
35 public static void set_allocation (WidgetAllocation w) {
36 allocation = w.copy ();
37 }
38
39 public void key_release (uint e) {
40 current_display.key_release (e);
41 }
42
43 public void key_press (uint e) {
44 current_display.key_press (e);
45 }
46
47 internal static void set_display (FontDisplay fd) {
48 current_display = fd;
49 }
50
51 public void set_current_glyph_collection (GlyphCollection gc, bool signal_selected = true) {
52 Glyph g = gc.get_current ();
53
54 BirdFont.current_glyph_collection = gc;
55 g.resized (allocation);
56
57 if (!is_null (current_display)) {
58 if (signal_selected) {
59 current_display.selected_canvas ();
60 FontDisplay.dirty_scrollbar = true;
61 }
62
63 current_display.redraw_area.connect ((x, y, w, h) => {
64 signal_redraw_area ((int)x, (int)y, (int)w, (int)h);
65 });
66
67 redraw ();
68 }
69
70 if (!is_null (MainWindow.native_window)) {
71 MainWindow.native_window.update_window_size ();
72 }
73 }
74
75 public static Glyph get_current_glyph () {
76 return MainWindow.get_current_glyph ();
77 }
78
79 public FontDisplay get_current_display () {
80 return current_display;
81 }
82
83 public void redraw_area (int x, int y, int w, int h) {
84 if (MenuTab.suppress_event) {
85 warning ("Do not call redraw from background thread.");
86 } else {
87 signal_redraw_area (x, y, w, h);
88 }
89 }
90
91 public static void redraw () {
92 GlyphCanvas c = MainWindow.get_glyph_canvas ();
93 if (!is_null (c)) {
94 c.redraw_area (0, 0, allocation.width, allocation.height);
95 }
96 }
97 }
98
99 }
100