/* * Copyright (c) 1991 Stanford University * Copyright (c) 1991 Silicon Graphics, Inc. * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that (i) the above copyright notices and this permission notice appear in * all copies of the software and related documentation, and (ii) the names of * Stanford and Silicon Graphics may not be used in any advertising or * publicity relating to the software without the specific, prior written * permission of Stanford and Silicon Graphics. * * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. * * IN NO EVENT SHALL STANFORD OR SILICON GRAPHICS BE LIABLE FOR * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */ /* * Slider - common slider behavior */ #ifndef ivlook_slider_h #define ivlook_slider_h #include <InterViews/adjust.h> #include <InterViews/input.h> #include <InterViews/observe.h> class SliderImpl; class Stepper; class Style; typedef void (Adjustable::*SliderAdjustment)(DimensionName); class Slider : public ActiveHandler, public Observer { public: Slider(Style*); virtual ~Slider(); virtual void normal_thumb(Glyph*); virtual void visible_thumb(Glyph*); virtual void old_thumb(Glyph*); virtual Coord minimum_thumb_size() const; virtual void request(Requisition&) const; virtual void allocate(Canvas*, const Allocation&, Extension&); virtual void draw(Canvas*, const Allocation&) const; virtual void undraw(); virtual void move(const Event&); virtual void press(const Event&); virtual void drag(const Event&); virtual void release(const Event&); virtual void allocation_changed(Canvas*, const Allocation&); virtual void update(Observable*); virtual void forward_stepper(Stepper*); virtual void backward_stepper(Stepper*); virtual void move_to(Coord x, Coord y); virtual void allocate_thumb(const Allocation&); virtual void allot_thumb_major_axis( const Allocation&, DimensionName, Adjustable*, Coord min_thumb_size, float& scale, Allotment& ); virtual void allot_thumb_minor_axis(const Allotment&, Allotment&); virtual void redraw_thumb(); virtual void reallocate_thumb(const Allocation&); virtual void apply_adjustment(SliderAdjustment); virtual void do_adjustment(Adjustable*, SliderAdjustment, DimensionName); private: SliderImpl* impl_; }; class XSlider : public Slider { public: XSlider(Style*, Adjustable*); virtual ~XSlider(); virtual void move_to(Coord x, Coord y); virtual void allocate_thumb(const Allocation&); virtual void disconnect(Observable*); virtual void apply_adjustment(SliderAdjustment); private: Adjustable* adjustable_; float xscale_; Stepper* forward_; Stepper* backward_; }; class YSlider : public Slider { public: YSlider(Style*, Adjustable*); virtual ~YSlider(); virtual void move_to(Coord x, Coord y); virtual void allocate_thumb(const Allocation&); virtual void disconnect(Observable*); virtual void apply_adjustment(SliderAdjustment); private: Adjustable* adjustable_; float yscale_; Stepper* forward_; Stepper* backward_; }; class XYSlider : public Slider { public: XYSlider(Style*, Adjustable* x, Adjustable* y); virtual ~XYSlider(); virtual void move_to(Coord x, Coord y); virtual void allocate_thumb(const Allocation&); virtual void disconnect(Observable*); virtual void apply_adjustment(SliderAdjustment); private: Adjustable* x_adjustable_; Adjustable* y_adjustable_; float xscale_; float yscale_; }; #endif