Mercurial > projects > doodle
view tool_layer.d @ 14:0b7e7d43a79d
Checkpoint
author | "David Bryant <bagnose@gmail.com>" |
---|---|
date | Sun, 12 Jul 2009 01:23:32 +0930 |
parents | a093c4fbdd43 |
children | 9e63308b749c |
line wrap: on
line source
module tool_layer; import std.stdio; import cairo.Context; import cairo_support; import tool; private import icanvas; private import tk.types; private import tk.geometry; private import tk.events; class ToolLayer : Layer, EventHandler { this(in Tool[] tools, in string name) { super(name); 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 Rectangle bounds() const { return Rectangle(); } override void draw(const Viewport viewport, in Rectangle damage, Context model_cr, Context screen_cr) const { } /* override void push(Tool tool) { } override void pop() { } override void replace(Tool tool) { } */ private { Tool[] mTools; Tool * mGrabbedTool; ButtonName mGrabbedButton; } }