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76 lines
2 KiB
C
76 lines
2 KiB
C
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/*
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Copyright (C) 2006 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: fastmeter.h 570 2006-06-07 21:21:21Z sampo $
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*/
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#ifndef __gtkmm2ext_pixfader_h__
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#define __gtkmm2ext_pixfader_h__
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#include <cmath>
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#include <gtkmm/drawingarea.h>
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#include <gtkmm/adjustment.h>
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#include <gdkmm/pixbuf.h>
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namespace Gtkmm2ext {
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class PixFader : public Gtk::DrawingArea {
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public:
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PixFader (Glib::RefPtr<Gdk::Pixbuf> base,
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Glib::RefPtr<Gdk::Pixbuf> handle,
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Gtk::Adjustment& adjustment);
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virtual ~PixFader ();
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protected:
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Gtk::Adjustment& adjustment;
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void on_size_request (GtkRequisition*);
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bool on_expose_event (GdkEventExpose*);
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bool on_button_press_event (GdkEventButton*);
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bool on_button_release_event (GdkEventButton*);
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bool on_motion_notify_event (GdkEventMotion*);
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bool on_scroll_event (GdkEventScroll* ev);
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private:
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Glib::RefPtr<Gdk::Pixbuf> base_pixbuf;
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Glib::RefPtr<Gdk::Pixbuf> handle_pixbuf;
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gint pixheight;
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GdkRectangle pixrect;
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GdkWindow* grab_window;
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double grab_y;
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double grab_start;
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int last_drawn;
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bool dragging;
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float default_value;
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int unity_y;
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void adjustment_changed ();
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int display_height () {
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return (int) floor (pixheight * (1.0 - (adjustment.get_upper() - adjustment.get_value ()) / ((adjustment.get_upper() - adjustment.get_lower()))));
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}
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};
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} /* namespace */
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#endif /* __gtkmm2ext_pixfader_h__ */
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