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comparison dia/tool_layer.d @ 22:17c2df87b459

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Package refactoring.
author "David Bryant <bagnose@gmail.com>"
date Wed, 15 Jul 2009 23:31:29 +0930
parents tool_layer.d@22abbf4cde96
children a24c13bb9c98
comparison
equal deleted inserted replaced
21:993ac3a183c8 22:17c2df87b459
1 module dia.tool_layer;
2
3 private {
4 import std.stdio;
5 import cairo_support;
6 }
7
8 public {
9 import tool;
10 }
11
12 class ToolLayer : Layer, EventHandler {
13 this(in Tool[] tools, in string name) {
14 super(name);
15 mTools = tools.dup;
16 }
17
18 override bool handle_button_press(Viewport viewport, in ButtonEvent event) {
19 // writefln("%s", event);
20
21 if (mGrabbedTool is null) {
22 foreach_reverse(ref tool; mTools) {
23 if (tool.handle_button_press(viewport, event)) {
24 mGrabbedTool = &tool;
25 mGrabbedButton = event.button_name;
26 break;
27 }
28 }
29 }
30 else {
31 mGrabbedTool.handle_button_press(viewport, event);
32 }
33
34 return true;
35 }
36
37 override bool handle_button_release(Viewport viewport, in ButtonEvent event) {
38 // writefln("%s", event);
39
40 if (mGrabbedTool !is null) {
41 mGrabbedTool.handle_button_release(viewport, event);
42
43 if (mGrabbedButton == event.button_name) {
44 mGrabbedTool = null;
45 }
46 }
47
48 return true;
49 }
50
51 override bool handle_key_press(Viewport viewport, in KeyEvent event) {
52 // writefln("%s", event);
53
54 return true;
55 }
56
57 override bool handle_key_release(Viewport viewport, in KeyEvent event) {
58 // writefln("%s", event);
59
60 return true;
61 }
62
63 override bool handle_motion(Viewport viewport, in MotionEvent event) {
64 //writefln("%s", event);
65
66 if (mGrabbedTool is null) {
67 foreach_reverse(ref tool; mTools) {
68 if (tool.handle_motion(viewport, event)) {
69 break;
70 }
71 }
72 }
73 else {
74 mGrabbedTool.handle_motion(viewport, event);
75 }
76
77 return true;
78 }
79
80 override bool handle_scroll(Viewport viewport, in ScrollEvent event) {
81 // writefln("%s", event);
82
83 if (mGrabbedTool is null) {
84 foreach_reverse(ref tool; mTools) {
85 if (tool.handle_scroll(viewport, event)) {
86 break;
87 }
88 }
89 }
90 else {
91 mGrabbedTool.handle_scroll(viewport, event);
92 }
93
94 return true;
95 }
96
97 override Rectangle bounds() const {
98 return Rectangle();
99 }
100
101 override void draw(const Viewport viewport,
102 in Rectangle pixel_damage, scope Context pixel_cr,
103 in Rectangle model_damage, scope Context model_cr) const {
104 // FIXME this isn't how we will really draw the tools...
105 foreach (const Tool tool; mTools) {
106 tool.draw(viewport, pixel_damage, pixel_cr, model_damage, model_cr);
107 }
108 }
109
110 /*
111 override void push(Tool tool) {
112 }
113
114 override void pop() {
115 }
116
117 override void replace(Tool tool) {
118 }
119 */
120
121 private {
122 Tool[] mTools;
123 Tool * mGrabbedTool;
124 ButtonName mGrabbedButton;
125 }
126 }