Mercurial > projects > doodle
view doodle/dia/tool_layer.d @ 36:188397ef9a12
Late night tinkering
author | David Bryant <bagnose@gmail.com> |
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date | Sun, 30 Aug 2009 23:36:31 +0930 |
parents | 1754cb773d41 |
children | 1b4c9ba58673 |
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module doodle.dia.tool_layer; public { import doodle.dia.tool; } private { import std.stdio; import doodle.cairo.routines; } class ToolLayer : Layer, EventHandler { this(in Tool[] tools, in string name) { super(name); mTools = tools.dup; } // Layer overrides: override Rectangle bounds() const { return Rectangle(); } override void draw(const Viewport viewport, in Rectangle pixel_damage, scope Context pixel_cr, in Rectangle model_damage, scope Context model_cr) const { // FIXME this isn't how we will really draw the tools... foreach (const Tool tool; mTools) { tool.draw(viewport, pixel_damage, pixel_cr, model_damage, model_cr); } } // EventHandler overrides: override bool handle_button_press(scope 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(scope 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(scope Viewport viewport, in KeyEvent event) { // writefln("%s", event); return true; } override bool handle_key_release(scope Viewport viewport, in KeyEvent event) { // writefln("%s", event); return true; } override bool handle_motion(scope 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(scope 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; } }