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view tool_stack.d @ 10:71ca82e0eb76
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author | "David Bryant <bagnose@gmail.com>" |
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date | Sat, 11 Jul 2009 22:49:41 +0930 |
parents | 936feb16eed4 |
children |
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module tool_stack; import std.stdio; import tool; private import icanvas; private import tk.types; private import tk.geometry; private import tk.events; class ToolStack : EventHandler { this(in Tool[] tools) { mTools = tools.dup; } override bool handle_button_press(Viewport viewport, in ButtonEvent event) { writefln("%s", event); if (mGrabbedTool is null) { foreach_reverse(ref tool; mTools) { if (tool.handle_button_press(viewport, event)) { mGrabbedTool = &tool; mGrabbedButton = event.button_name; break; } } } else { mGrabbedTool.handle_button_press(viewport, event); } return true; } override bool handle_button_release(Viewport viewport, in ButtonEvent event) { writefln("%s", event); if (mGrabbedTool !is null) { mGrabbedTool.handle_button_release(viewport, event); if (mGrabbedButton == event.button_name) { mGrabbedTool = null; } } return true; } override bool handle_key_press(Viewport viewport, in KeyEvent event) { writefln("%s", event); return true; } override bool handle_key_release(Viewport viewport, in KeyEvent event) { writefln("%s", event); return true; } override bool handle_motion(Viewport viewport, in MotionEvent event) { writefln("%s", event); if (mGrabbedTool is null) { foreach_reverse(ref tool; mTools) { if (tool.handle_motion(viewport, event)) { break; } } } else { mGrabbedTool.handle_motion(viewport, event); } return true; } override bool handle_scroll(Viewport viewport, in ScrollEvent event) { writefln("%s", event); if (mGrabbedTool is null) { foreach_reverse(ref tool; mTools) { if (tool.handle_scroll(viewport, event)) { break; } } } else { mGrabbedTool.handle_scroll(viewport, event); } return true; } /* override void push(Tool tool) { } override void pop() { } override void replace(Tool tool) { } */ private { Tool[] mTools; Tool * mGrabbedTool; ButtonName mGrabbedButton; } }