Just move gtk -> wx (part deux)

1 files changed, 167 insertions, 0 deletions

diff --git a/src/wx/alignment.cc b/src/wx/alignment.cc
new file mode 100644
index 000000000..ee4ca51c1
--- /dev/null
+++ b/src/wx/alignment.cc
@@ -0,0 +1,167 @@
+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <iostream>
+#include <gtkmm.h>
+#include <cairomm/cairomm.h>
+#include "alignment.h"
+
+using namespace std;
+
+class AlignmentWidget : public Gtk::DrawingArea
+{
+public:
+	void set_text_line (int n, string t)
+	{
+		if (int(_text.size()) < (n + 1)) {
+			_text.resize (n + 1);
+		}
+		
+		_text[n] = t;
+		queue_draw ();
+	}
+	
+private:	
+	bool on_expose_event (GdkEventExpose* ev)
+	{
+		if (!get_window ()) {
+			return false;
+		}
+		
+		Cairo::RefPtr<Cairo::Context> c = get_window()->create_cairo_context ();
+		
+		Gtk::Allocation a = get_allocation ();
+		int const w = a.get_width ();
+		int const h = a.get_height ();
+		
+		c->rectangle (0, 0, w, h);
+		c->set_source_rgb (0, 0, 0);
+		c->fill ();
+		
+		c->set_source_rgb (1, 1, 1);
+		c->set_line_width (1);
+		
+		int const arrow_size = h / 8;
+		int const head_size = h / 32;
+		
+		/* arrow to left edge */
+		c->move_to (arrow_size, h / 2);
+		c->line_to (0, h / 2);
+		c->rel_line_to (head_size, head_size);
+		c->move_to (0, h / 2);
+		c->rel_line_to (head_size, -head_size);
+		c->stroke ();
+		
+		/* arrow to right edge */
+		c->move_to (w - arrow_size, h / 2);
+		c->line_to (w, h / 2);
+		c->rel_line_to (-head_size, head_size);
+		c->move_to (w, h / 2);
+		c->rel_line_to (-head_size, -head_size);
+		c->stroke ();
+		
+		/* arrow to top edge */
+		c->move_to (w / 2, arrow_size);
+		c->line_to (w / 2, 0);
+		c->rel_line_to (head_size, head_size);
+		c->move_to (w / 2, 0);
+		c->rel_line_to (-head_size, head_size);
+		c->stroke ();
+		
+		/* arrow to bottom edge */
+		c->move_to (w / 2, h - h / 8);
+		c->line_to (w / 2, h);
+		c->rel_line_to (head_size, -head_size);
+		c->move_to (w / 2, h);
+		c->rel_line_to (-head_size, -head_size);
+		c->stroke ();
+		
+		/* arrow to top-left corner */
+		c->move_to (arrow_size, arrow_size);
+		c->line_to (0, 0);
+		c->rel_line_to (head_size, 0);
+		c->move_to (0, 0);
+		c->rel_line_to (0, head_size);
+		c->stroke ();
+		
+		/* arrow to top-right corner */
+		c->move_to (w - arrow_size, arrow_size);
+		c->line_to (w, 0);
+		c->rel_line_to (0, head_size);
+		c->move_to (w, 0);
+		c->rel_line_to (-head_size, 0);
+		c->stroke ();
+		
+		/* arrow to bottom-left corner */
+		c->move_to (arrow_size, h - arrow_size);
+		c->line_to (0, h);
+		c->rel_line_to (head_size, 0);
+		c->move_to (0, h);
+		c->rel_line_to (0, -head_size);
+		c->stroke ();
+		
+		/* arrow to bottom-right corner */
+		c->move_to (w - arrow_size, h - arrow_size);
+		c->line_to (w, h);
+		c->rel_line_to (-head_size, 0);
+		c->line_to (w, h);
+		c->rel_line_to (0, -head_size);
+		c->stroke ();
+		
+		/* text */
+		int max_height = 0;
+		for (vector<string>::iterator i = _text.begin(); i != _text.end(); ++i) {
+			Cairo::TextExtents e;
+			c->get_text_extents (*i, e);
+			max_height = max (max_height, int (e.height));
+		}
+		
+		int total_height = max_height * _text.size() * 2;
+		
+		for (vector<string>::size_type i = 0; i < _text.size(); ++i) {
+			Cairo::TextExtents e;
+			c->get_text_extents (_text[i], e);
+			c->move_to ((w - e.width) / 2, ((h - total_height) / 2) + ((i * 2) + 1) *  max_height);
+			c->text_path (_text[i]);
+			c->stroke ();
+		}
+		
+		return true;
+	}
+
+	std::vector<std::string> _text;
+};
+
+Alignment::Alignment (Position p, Size s)
+{
+	_widget = Gtk::manage (new AlignmentWidget);
+	add (*_widget);
+	show_all ();
+	
+	set_decorated (false);
+	set_resizable (false);
+	set_size_request (s.width, s.height);
+	move (p.x, p.y);
+}
+
+void
+Alignment::set_text_line (int n, string t)
+{
+	_widget->set_text_line (n, t);
+}