1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
//
// "$Id: Fl_Browser_.H,v 1.4 1998/10/21 14:19:00 mike Exp $"
//
// Common browser header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@easysw.com".
//
// This is the base class for browsers. To be useful it must
// be subclassed and several virtual functions defined. The
// Forms-compatable browser and the file chooser's browser are
// subclassed off of this.
// Yes, I know this should be a template...
#ifndef Fl_Browser__H
#define Fl_Browser__H
#ifndef Fl_Group_H
#include "Fl_Group.H"
#endif
#include "Fl_Scrollbar.H"
#define FL_NORMAL_BROWSER 0
#define FL_SELECT_BROWSER 1
#define FL_HOLD_BROWSER 2
#define FL_MULTI_BROWSER 3
class Fl_Browser_ : public Fl_Group {
int position_; // where user wants it scrolled to
int real_position_; // the current vertical scrolling position
int hposition_; // where user wants it panned to
int real_hposition_; // the current horizontal scrolling position
int offset_; // how far down top_ item the real_position is
int max_width; // widest object seen so far
uchar textfont_, textsize_, textcolor_;
uchar has_scrollbar_; // which scrollbars are enabled
void* top_; // which item scrolling position is in
void* selection_; // which is selected (except for FL_MULTI_BROWSER)
void *redraw1,*redraw2; // minimal update pointers
void* max_width_item; // which item has max_width_
static int scrollbar_width_;
void update_top();
protected:
// All of the following must be supplied by the subclass:
virtual void *item_first() const = 0;
virtual void *item_next(void *) const = 0;
virtual void *item_prev(void *) const = 0;
virtual int item_height(void *) const = 0;
virtual int item_width(void *) const = 0;
virtual int item_quick_height(void *) const ;
virtual void item_draw(void *,int,int,int,int) const = 0;
// you don't have to provide these but it may help speed it up:
virtual int full_width() const ; // current width of all items
virtual int full_height() const ; // current height of all items
virtual int incr_height() const ; // average height of an item
// These only need to be done by subclass if you want a multi-browser:
virtual void item_select(void *,int=1);
virtual int item_selected(void *) const ;
// things the subclass may want to call:
void *top() const {return top_;}
void *selection() const {return selection_;}
void new_list(); // completely clobber all data, as though list replaced
void deleting(void *a); // get rid of any pointers to a
void replacing(void *a,void *b); // change a pointers to b
void inserting(void *a,void *b); // insert a before b
int displayed(void *) const ; // true if this line is visible
void redraw_line(void *); // minimal update, no change in size
void redraw_lines() {damage(FL_DAMAGE_SCROLL);} // redraw all of them
void bbox(int&,int&,int&,int&) const;
int leftedge() const; // x position after scrollbar & border
void *find_item(int my); // item under mouse
void draw(int,int,int,int);
int handle(int,int,int,int,int);
void draw();
int handle(int);
Fl_Browser_(int,int,int,int,const char * = 0);
public:
Fl_Scrollbar scrollbar; // Vertical scrollbar
Fl_Scrollbar hscrollbar; // Horizontal scrollbar
void resize(int,int,int,int);
int select(void *,int=1,int docallbacks=0);
int select_only(void *,int docallbacks=0);
int deselect(int docallbacks=0);
int position() const {return position_;}
int hposition() const {return hposition_;}
void position(int); // scroll to here
void hposition(int); // pan to here
void display(void*); // scroll so this item is shown
uchar has_scrollbar() const {return has_scrollbar_;}
void has_scrollbar(uchar i) {has_scrollbar_ = i;}
enum { // values for has_scrollbar()
HORIZONTAL = 1,
VERTICAL = 2,
BOTH = 3,
ALWAYS_ON = 4,
HORIZONTAL_ALWAYS = 5,
VERTICAL_ALWAYS = 6,
BOTH_ALWAYS = 7
};
Fl_Font textfont() const {return (Fl_Font)textfont_;}
void textfont(uchar s) {textfont_ = s;}
uchar textsize() const {return textsize_;}
void textsize(uchar s) {textsize_ = s;}
Fl_Color textcolor() const {return (Fl_Color)textcolor_;}
void textcolor(uchar n) {textcolor_ = n;}
static void scrollbar_width(int b) {scrollbar_width_ = b;}
static int scrollbar_width() {return scrollbar_width_;}
// for back compatability:
void scrollbar_right() {scrollbar.align(FL_ALIGN_RIGHT);}
void scrollbar_left() {scrollbar.align(FL_ALIGN_LEFT);}
};
#endif
//
// End of "$Id: Fl_Browser_.H,v 1.4 1998/10/21 14:19:00 mike Exp $".
//
|
