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73 lines
2 KiB
C
73 lines
2 KiB
C
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/*
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Copyright (C) 2014 Waves Audio Ltd.
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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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*/
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#ifndef __gtk2_waves_zoom_control_h__
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#define __gtk2_waves_zoom_control_h__
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#include <gtkmm/adjustment.h>
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#include "gtkmm2ext/cairo_widget.h"
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class WavesZoomControl : public CairoWidget
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{
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public:
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WavesZoomControl (Gtk::Adjustment& adjustment);
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virtual ~WavesZoomControl ();
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bool on_button_press_event (GdkEventButton*);
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bool on_button_release_event (GdkEventButton*);
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protected:
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void render (cairo_t *);
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void on_size_request (Gtk::Requisition* req);
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bool on_enter_notify_event (GdkEventCrossing*);
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bool on_leave_notify_event (GdkEventCrossing*);
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bool on_motion_notify_event (GdkEventMotion*);
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private:
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Gtk::Adjustment& _adjustment;
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enum State {
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StateIdle = 0,
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StateSliding,
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StateButtonUpActive,
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StateButtonUpLeft,
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StateButtonDownActive,
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StateButtonDownLeft
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} _state;
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enum ControlArea {
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Nothing = 0,
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SlidingArea,
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ButtonUp,
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ButtonDown
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};
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double _begin_motion_zoom;
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double _begin_motion_y;
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Glib::RefPtr<Gdk::Pixbuf> _state_idle_pixbuf;
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Glib::RefPtr<Gdk::Pixbuf> _state_sliding_pixbuf;
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Glib::RefPtr<Gdk::Pixbuf> _state_increasing_zoom_pixbuf;
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Glib::RefPtr<Gdk::Pixbuf> _state_decreasing_zoom_pixbuf;
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ControlArea _area_by_point (int x, int y);
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};
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#endif /* __gtk2_waves_zoom_control_h__ */
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