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comparison doodle/dia/icanvas.d @ 28:1754cb773d41

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Part-way through getting to compile with configure/builder.
author Graham St Jack <graham.stjack@internode.on.net>
date Sun, 02 Aug 2009 16:27:21 +0930
parents dia/icanvas.d@f3d91579bb28
children c2f11e1d7470
comparison
equal deleted inserted replaced
27:f3d91579bb28 28:1754cb773d41
1 module doodle.dia.icanvas;
2
3 public {
4 import doodle.tk.geometry;
5 import doodle.tk.events;
6 import cairo.Context;
7 }
8
9 private {
10 import std.typecons;
11 }
12
13 mixin(defineEnum!("Cursor",
14 "DEFAULT", "HAND", "CROSSHAIR"));
15
16 interface Viewport {
17 void zoom_relative(in Point pixel_datum, in double factor);
18 void pan_relative(in Vector pixel_displacement);
19 void set_cursor(in Cursor cursor);
20 void damage_model(in Rectangle area); // FIXME could be an inout parameter of the event handling, or a special scope Damage object that supports growth only
21 void damage_pixel(in Rectangle area); // FIXME as above
22
23 /*
24 // FIXME not sure about these:
25 double zoom() const;
26 Point model_to_pixel(in Point model) const;
27 Point pixel_to_model(in Point pixel) const;
28 Vector model_to_pixel(in Vector model) const;
29 Vector pixel_to_model(in Vector pixel) const;
30 Rectangle model_to_pixel(in Rectangle model) const;
31 Rectangle pixel_to_model(in Rectangle model) const;
32 double model_to_pixel(in double model) const;
33 double pixel_to_model(in double pixel) const;
34 */
35 }
36
37 interface EventHandler {
38 bool handle_button_press(scope Viewport viewport, in ButtonEvent event);
39 bool handle_button_release(scope Viewport viewport, in ButtonEvent event);
40 bool handle_motion(scope Viewport viewport, in MotionEvent event);
41 bool handle_scroll(scope Viewport viewport, in ScrollEvent event);
42 //bool handle_enter(scope Viewport viewport, CrossingEvent event);
43 //bool handle_leave(scope Viewport viewport, CrossingEvent event);
44 //bool handle_focus_in(scope Viewport viewport, FocusEvent event);
45 //bool handle_focus_out(scope Viewport viewport, FocusEvent event);
46 bool handle_key_press(scope Viewport viewport, in KeyEvent event);
47 bool handle_key_release(scope Viewport viewport, in KeyEvent event);
48 }
49
50 abstract class Layer {
51 this(in string name) {
52 mName = name;
53 }
54
55 string name() const { return mName; }
56
57 Rectangle bounds() const;
58 //void zoom_changed
59 void draw(in Viewport viewport,
60 in Rectangle pixel_damage, scope Context pixel_cr,
61 in Rectangle model_damage, scope Context model_cr) const;
62
63 private {
64 invariant string mName;
65 }
66 }