137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
// Filename: pgScrollFrame.h
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// Created by: drose (17Aug05)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef PGSCROLLFRAME_H
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#define PGSCROLLFRAME_H
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#include "pandabase.h"
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#include "pgVirtualFrame.h"
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#include "pgSliderBarNotify.h"
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#include "pgSliderBar.h"
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////////////////////////////////////////////////////////////////////
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// Class : PGScrollFrame
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// Description : This is a special kind of frame that pretends to be
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// much larger than it actually is. You can scroll
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// through the frame, as if you're looking through a
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// window at the larger frame beneath. All children of
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// this frame node are scrolled and clipped as if they
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// were children of the larger, virtual frame.
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//
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// This is implemented as a specialization of
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// PGVirtualFrame, which handles the meat of the virtual
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// canvas. This class adds automatic support for scroll
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// bars, and restricts the virtual transform to
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// translate only (no scale or rotate).
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA PGScrollFrame : public PGVirtualFrame, public PGSliderBarNotify {
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PUBLISHED:
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PGScrollFrame(const string &name = "");
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virtual ~PGScrollFrame();
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protected:
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PGScrollFrame(const PGScrollFrame ©);
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public:
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virtual PandaNode *make_copy() const;
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virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
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virtual void xform(const LMatrix4f &mat);
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PUBLISHED:
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void setup(float width, float height,
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float left, float right, float bottom, float top,
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float slider_width, float bevel);
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INLINE void set_virtual_frame(float left, float right, float bottom, float top);
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INLINE void set_virtual_frame(const LVecBase4f &virtual_frame);
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INLINE const LVecBase4f &get_virtual_frame() const;
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INLINE bool has_virtual_frame() const;
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INLINE void clear_virtual_frame();
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INLINE void set_manage_pieces(bool manage_pieces);
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INLINE bool get_manage_pieces() const;
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INLINE void set_auto_hide(bool auto_hide);
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INLINE bool get_auto_hide() const;
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INLINE void set_horizontal_slider(PGSliderBar *horizontal_slider);
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INLINE void clear_horizontal_slider();
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INLINE PGSliderBar *get_horizontal_slider() const;
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INLINE void set_vertical_slider(PGSliderBar *vertical_slider);
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INLINE void clear_vertical_slider();
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INLINE PGSliderBar *get_vertical_slider() const;
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void remanage();
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INLINE void recompute();
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protected:
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virtual void frame_changed();
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virtual void item_transform_changed(PGItem *item);
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virtual void item_frame_changed(PGItem *item);
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virtual void item_draw_mask_changed(PGItem *item);
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virtual void slider_bar_adjust(PGSliderBar *slider_bar);
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private:
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void recompute_clip();
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void recompute_canvas();
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float interpolate_canvas(float clip_min, float clip_max,
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float canvas_min, float canvas_max,
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PGSliderBar *slider_bar);
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private:
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bool _needs_remanage;
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bool _needs_recompute_clip;
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bool _needs_recompute_canvas;
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LVecBase4f _orig_clip_frame;
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bool _has_virtual_frame;
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LVecBase4f _virtual_frame;
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bool _manage_pieces;
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bool _auto_hide;
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PT(PGSliderBar) _horizontal_slider;
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PT(PGSliderBar) _vertical_slider;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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PGVirtualFrame::init_type();
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register_type(_type_handle, "PGScrollFrame",
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PGVirtualFrame::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "pgScrollFrame.I"
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#endif
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