Flu_Wrap_Group.cpp
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上传日期:2007-06-13
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- /*
- * ===========================================================================
- * PRODUCTION $Log: Flu_Wrap_Group.cpp,v $
- * PRODUCTION Revision 1000.1 2004/06/01 21:06:11 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.2
- * PRODUCTION
- * ===========================================================================
- */
- /*
- * These files were imported into NCBI's CVS directly from FLU version 2.9.1.
- * Modifications to the source are listed below.
- *
- * ==========================================================================
- * $Log: Flu_Wrap_Group.cpp,v $
- * Revision 1000.1 2004/06/01 21:06:11 gouriano
- * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.2
- *
- * Revision 1.2 2004/05/21 22:27:51 gorelenk
- * Added PCH ncbi_pch.hpp
- *
- * Revision 1.1 2004/03/11 13:51:40 dicuccio
- * Imported FLU version 2.9.1. Altered export specifiers to match NCBI layout.
- * Altered include paths to match NCBI toolkit layout.
- *
- * ==========================================================================
- */
- // $Id: Flu_Wrap_Group.cpp,v 1000.1 2004/06/01 21:06:11 gouriano Exp $
- /***************************************************************
- * FLU - FLTK Utility Widgets
- * Copyright (C) 2002 Ohio Supercomputer Center, Ohio State University
- *
- * This file and its content is protected by a software license.
- * You should have received a copy of this license with this file.
- * If not, please contact the Ohio Supercomputer Center immediately:
- * Attn: Jason Bryan Re: FLU 1224 Kinnear Rd, Columbus, Ohio 43212
- *
- ***************************************************************/
- #include <ncbi_pch.hpp>
- #include <gui/widgets/FLU/Flu_Wrap_Group.h>
- #include <string.h>
- #include <stdio.h>
- #define MAX( x, y ) ( (x)>(y) ? (x) : (y) )
- #define SCROLL_SIZE 15
- Flu_Wrap_Group :: Scrollbar :: Scrollbar( int x, int y, int w, int h, const char *l )
- : Fl_Scrollbar( x, y, w, h, l )
- {
- }
- int Flu_Wrap_Group :: Scrollbar :: handle( int event )
- {
- if( event == FL_MOUSEWHEEL )
- {
- handle_drag( clamp( value() + linesize() * Fl::e_dy ) );
- return 1;
- }
- else
- return Fl_Scrollbar::handle( event );
- }
- Flu_Wrap_Group :: Flu_Wrap_Group( int x, int y, int w, int h, const char *l )
- : Fl_Group( x, y, w, h, l ), scrollbar( x+w-SCROLL_SIZE, y, SCROLL_SIZE, h ), group( x, y, w-SCROLL_SIZE, h )
- {
- offset( 0, 0 );
- spacing( 0, 0 );
- _type = FL_VERTICAL;
- scrollTo = NULL;
- Fl_Group::add( &scrollbar );
- scrollbar.callback( _scrollCB, this );
- scrollbar.linesize( 10 );
- scrollbar.range( 0, 100 );
- scrollbar.show();
- Fl_Group::add( &group );
- Fl_Group::resizable( group );
- Fl_Group::end();
- group.begin();
- }
- void Flu_Wrap_Group :: resize( int x, int y, int w, int h )
- {
- group.resizable( NULL );
- Fl_Group::resize( x, y, w, h );
- if( type() == FL_VERTICAL )
- {
- scrollbar.resize( x+w-SCROLL_SIZE-Fl::box_dx(box()), y+Fl::box_dy(box()), SCROLL_SIZE, h-Fl::box_dh(box()) );
- group.resize( x, y, w-SCROLL_SIZE-Fl::box_dx(box()), h );
- }
- else
- {
- scrollbar.resize( x+Fl::box_dx(box()), y+h-SCROLL_SIZE-Fl::box_dy(box()), w-Fl::box_dw(box()), SCROLL_SIZE );
- group.resize( x, y, w, h-SCROLL_SIZE-Fl::box_dh(box()) );
- }
- Fl_Group::init_sizes();
- redraw();
- }
- void Flu_Wrap_Group :: scroll_to( const Fl_Widget *w )
- {
- scrollTo = w;
- redraw();
- }
- void Flu_Wrap_Group :: scroll_to_beginning()
- {
- ((Fl_Valuator*)&scrollbar)->value( scrollbar.minimum() );
- }
- void Flu_Wrap_Group :: scroll_to_end()
- {
- ((Fl_Valuator*)&scrollbar)->value( scrollbar.maximum() );
- }
- void Flu_Wrap_Group :: type( int t )
- {
- _type = t;
- resize( x(), y(), w(), h() );
- }
- Fl_Widget* Flu_Wrap_Group :: next( Fl_Widget* w )
- {
- for( int i = 0; i < group.children()-1; i++ )
- {
- if( w == group.child(i) )
- return group.child(i+1);
- }
- return NULL;
- }
- Fl_Widget* Flu_Wrap_Group :: previous( Fl_Widget* w )
- {
- for( int i = 1; i < group.children(); i++ )
- {
- if( w == group.child(i) )
- return group.child(i-1);
- }
- return NULL;
- }
- Fl_Widget* Flu_Wrap_Group :: above( Fl_Widget* w )
- {
- for( int i = 0; i < group.children(); i++ )
- {
- if( w == group.child(i) )
- {
- int measure[2];
- measure[0] = w->x() + w->w()/2;
- measure[1] = w->y() - _spacing[1];
- int index = layout( scrollbar.visible(), false, measure );
- if( index >= 0 )
- return group.child(index);
- else
- return group.child(0);
- }
- }
- return NULL;
- }
- Fl_Widget* Flu_Wrap_Group :: below( Fl_Widget* w )
- {
- for( int i = 0; i < group.children(); i++ )
- {
- if( w == group.child(i) )
- {
- int measure[2];
- measure[0] = w->x() + w->w()/2;
- measure[1] = w->y() + w->h() + _spacing[1];
- int index = layout( scrollbar.visible(), false, measure );
- if( index >= 0 )
- return group.child(index);
- else
- return group.child(group.children()-1);
- }
- }
- return NULL;
- }
- Fl_Widget* Flu_Wrap_Group :: left( Fl_Widget* w )
- {
- for( int i = 0; i < group.children(); i++ )
- {
- if( w == group.child(i) )
- {
- int measure[2];
- measure[0] = w->x() - _spacing[0];
- measure[1] = w->y() + w->h()/2;
- int index = layout( scrollbar.visible(), false, measure );
- if( index >= 0 )
- return group.child(index);
- else
- return group.child(0);
- }
- }
- return NULL;
- }
- Fl_Widget* Flu_Wrap_Group :: right( Fl_Widget* w )
- {
- for( int i = 0; i < group.children(); i++ )
- {
- if( w == group.child(i) )
- {
- int measure[2];
- measure[0] = w->x() + w->w() + _spacing[0] + 1;
- measure[1] = w->y() + w->h()/2;
- int index = layout( scrollbar.visible(), false, measure );
- if( index >= 0 )
- return group.child(index);
- else
- return group.child(group.children()-1);
- }
- }
- return NULL;
- }
- int Flu_Wrap_Group :: layout( bool sbVisible, bool doScrollTo, int *measure )
- {
- int xx = x()+Fl::box_dx(box()), yy = y()+Fl::box_dy(box()),
- ww = w()-Fl::box_dw(box()), hh = h()-Fl::box_dh(box());
- if( type() == FL_VERTICAL )
- {
- int i, X, Y, maxH, H, col, row, maxW, scrollY;
- Fl_Widget *c;
- scrollbar.type( FL_VERTICAL );
- BEGIN_H:
- X = xx+_offset[0];
- Y = yy+_offset[1] - (sbVisible ? scrollbar.value() : 0);
- maxH = _offset[1];
- H = 0;
- col = 0;
- row = 0;
- scrollY = 0;
- maxW = xx + ww - (sbVisible ? scrollbar.w() : 0);
- for( i = 0; i < group.children(); i++ )
- {
- c = group.child(i);
- if( !c->visible() )
- continue;
- H = MAX( H, c->h() );
- if( col == 0 )
- maxH += H + _spacing[1];
- if( ( X + c->w() ) > maxW )
- {
- Y += H + _spacing[1];
- scrollY += H + _spacing[1];
- if( i == group.children()-1 )
- maxH += H + _spacing[1];
- if( measure )
- {
- if( xx+_offset[0] <= measure[0] && measure[0] <= xx+c->w()+_offset[0]+_spacing[0] &&
- Y <= measure[1] && measure[1] <= Y+c->h()+_spacing[1] )
- return i;
- }
- else
- c->position( xx+_offset[0], Y );
- col = 0;
- row++;
- H = 0;
- X = xx+c->w() + _offset[0] + _spacing[0];
- }
- else
- {
- if( measure )
- {
- if( X <= measure[0] && measure[0] <= X+c->w()+_spacing[0] &&
- Y <= measure[1] && measure[1] <= Y+c->h()+_spacing[1] )
- return i;
- }
- else
- c->position( X, Y );
- X += c->w() + _spacing[0];
- col++;
- }
- if( doScrollTo && (c == scrollTo) )
- {
- if( scrollY > scrollbar.maximum() )
- scrollY = (int)scrollbar.maximum();
- ((Fl_Valuator*)&scrollbar)->value( scrollY );
- scrollTo = NULL;
- goto BEGIN_H;
- }
- // if we exceed the height and the scrollbar is not visible,
- // then it will soon become visible so we don't need to process anymore
- if( !measure && !sbVisible && maxH > hh )
- return 1;
- }
- if( measure )
- return -1;
- else if( maxH > hh )
- {
- scrollbar.range( 0, maxH-hh );
- scrollbar.slider_size( MAX( float(scrollbar.h()-(maxH-hh))/float(scrollbar.h()), 0.08f ) );
- return 1;
- }
- else
- return 0;
- }
- else
- {
- int i, X, Y, W, maxW, maxH, col, row, scrollX;
- Fl_Widget *c;
- scrollbar.type( FL_HORIZONTAL );
- BEGIN_W:
- X = xx+_offset[0] - (sbVisible ? scrollbar.value() : 0);
- Y = yy+_offset[1];
- maxW = _offset[0];
- W = 0;
- col = 0;
- row = 0;
- scrollX = 0;
- maxH = yy + hh - (sbVisible ? scrollbar.h() : 0);
- for( i = 0; i < group.children(); i++ )
- {
- c = group.child(i);
- if( !c->visible() )
- continue;
- W = MAX( W, c->w() );
- if( row == 0 )
- maxW += W + _spacing[0];
- if( ( Y + c->h() ) > maxH )
- {
- X += W + _spacing[0];
- scrollX += W + _spacing[0];
- if( i == group.children()-1 )
- maxW += W + _spacing[0];
- if( measure )
- {
- if( X <= measure[0] && measure[0] <= X+c->w()+_spacing[0] &&
- yy+_offset[1] <= measure[1] && measure[1] <= yy+c->h()+_offset[1]+_spacing[1] )
- return i;
- }
- else
- c->position( X, yy+_offset[1] );
- row = 0;
- col++;
- W = 0;
- Y = yy+c->h() + _offset[1] + _spacing[1];
- }
- else
- {
- if( measure )
- {
- if( X <= measure[0] && measure[0] <= X+c->w()+_spacing[0] &&
- Y <= measure[1] && measure[1] <= Y+c->h()+_spacing[1] )
- return i;
- }
- else
- c->position( X, Y );
- Y += c->h() + _spacing[1];
- row++;
- }
- if( doScrollTo && (c == scrollTo) )
- {
- if( scrollX > scrollbar.maximum() )
- scrollX = (int)scrollbar.maximum();
- ((Fl_Valuator*)&scrollbar)->value( scrollX );
- scrollTo = NULL;
- goto BEGIN_W;
- }
- // if we exceed the width and the scrollbar is not visible,
- // then it will soon become visible so we don't need to process anymore
- if( !measure && !sbVisible && maxW > ww )
- return 1;
- }
- if( measure )
- return -1;
- else if( maxW > ww )
- {
- scrollbar.range( 0, maxW-ww );
- scrollbar.slider_size( MAX( float(scrollbar.w()-(maxW-ww))/float(scrollbar.w()), 0.08f ) );
- return 1;
- }
- else
- return 0;
- }
- }
- void Flu_Wrap_Group :: draw()
- {
- // we first try to fit all children assuming no scrollbar. if they do not all fit,
- // we have to turn the scrollbar on and try again
- if( layout( false, false ) )
- {
- scrollbar.show();
- layout( true, false );
- }
- else
- scrollbar.hide();
- // hack to look right when resizing smaller
- if( scrollbar.value() > scrollbar.maximum() )
- {
- ((Fl_Valuator*)&scrollbar)->value( scrollbar.maximum() );
- layout( scrollbar.visible(), scrollTo!=NULL );
- }
- else if( scrollTo )
- layout( scrollbar.visible(), true );
- scrollTo = NULL;
- if( damage() & ~FL_DAMAGE_CHILD)
- {
- draw_box();
- draw_label();
- }
- fl_push_clip( x()+Fl::box_dx(box()), y()+Fl::box_dy(box()),
- w()-Fl::box_dw(box()), h()-Fl::box_dh(box()) );
- draw_children();
- fl_pop_clip();
- }