Paul Davis
590882f3c8
Items no longer need a parent group (they require a Canvas pointer instead), so all constructors have been rationalized and have two variants, one with a parent and one with a canvas. All Items now inherit from Fill and Outline, to banish diagonal inheritance and virtual base classes and all that. There were zero changes to the Ardour GUI arising from these changes.
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
/*
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Copyright (C) 2014 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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*/
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#ifndef __CANVAS_SCROLL_GROUP_H__
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#define __CANVAS_SCROLL_GROUP_H__
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#include "canvas/group.h"
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namespace ArdourCanvas {
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class LIBCANVAS_API ScrollGroup : public Group
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{
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public:
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enum ScrollSensitivity {
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ScrollsVertically = 0x1,
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ScrollsHorizontally = 0x2
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};
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ScrollGroup (Canvas*, ScrollSensitivity);
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ScrollGroup (Group*, ScrollSensitivity);
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void scroll_to (Duple const& d);
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Duple scroll_offset() const { return _scroll_offset; }
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bool covers_canvas (Duple const& d) const;
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bool covers_window (Duple const& d) const;
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void render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const;
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private:
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ScrollSensitivity _scroll_sensitivity;
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Duple _scroll_offset;
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};
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}
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#endif
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