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1 // -*- C++ -*-
2 /* This file is part of
3  * ======================================================
4  * 
5  *           LyX, The Document Processor
6  *        
7  *           Copyright 1995 Matthias Ettrich
8  *           Copyright 1995-2000 The LyX Team.
9  *
10  * ======================================================*/
11
12 #ifndef WORKAREA_H
13 #define WORKAREA_H
14
15 #ifdef __GNUG__
16 #pragma interface
17 #endif
18
19 #include <utility>
20 using std::pair;
21
22 #include FORMS_H_LOCATION
23 #include "Painter.h"
24
25 class BufferView;
26
27 class WorkArea {
28 public:
29         ///
30         WorkArea(BufferView *, int xpos, int ypos, int width, int height);
31         ///
32         ~WorkArea();
33 #ifdef USE_PAINTER
34         ///
35         Painter & getPainter() { return painter_; }
36 #endif
37         ///
38         int workWidth() const { return work_area->w; }
39         ///
40         int width() const { return work_area->w + scrollbar->w; }
41         ///
42         int height() const { return work_area->h; }
43         ///
44         int xpos() const { return work_area->x; }
45         ///
46         int ypos() const { return work_area->y; }
47         ///
48         void resize(int xpos, int ypos, int width, int height);
49         ///
50         void redraw() const {
51                 fl_redraw_object(work_area);
52                 fl_redraw_object(scrollbar);
53                 fl_redraw_object(button_down);
54                 fl_redraw_object(button_up);
55         }
56         ///
57         void setFocus() const;
58         ///
59         Window getWin() const { return work_area->form->window; }
60         ///
61         bool hasFocus() const { return work_area->focus; }
62         ///
63         bool active() const { return work_area->active; }
64         ///
65         bool visible() const { return work_area->form->visible; }
66         ///
67         void greyOut() const;
68         ///
69         void setScrollbar(double pos, double length_fraction) const;
70         ///
71         void setScrollbarValue(double y) const { fl_set_slider_value(scrollbar, y); }
72         ///
73         void setScrollbarBounds(double, double) const;
74         ///
75         void setScrollbarIncrements(float inc) const;
76         ///
77         double getScrollbarValue() const {
78                 return fl_get_slider_value(scrollbar);
79         }
80         ///
81         pair<double, double> getScrollbarBounds() const {
82                 pair<double, double> p;
83                 fl_get_slider_bounds(scrollbar, &p.first, &p.second);
84                 return p;
85         }
86         ///
87         Pixmap getPixmap() const { return workareapixmap; }
88         /// xforms callback
89         static int work_area_handler(FL_OBJECT *, int event,
90                                      FL_Coord, FL_Coord,
91                                      int /*key*/, void * xev);
92         /// xforms callback
93         static void up_cb(FL_OBJECT *, long);
94         /// xforms callback
95         static void down_cb(FL_OBJECT *, long);
96         /// xforms callback
97         static void scroll_cb(FL_OBJECT *, long);
98 private:
99         ///
100         void createPixmap(int, int);
101         ///
102         FL_OBJECT * backgroundbox;
103         ///     
104         FL_OBJECT * work_area;
105         ///
106         FL_OBJECT * scrollbar;
107         ///
108         FL_OBJECT * button_down;
109         ///
110         FL_OBJECT * button_up;
111         ///
112         BufferView * owner;
113         /// The pixmap overlay on the workarea
114         Pixmap workareapixmap;
115 #ifdef USE_PAINTER
116         ///
117         Painter painter_;
118 #endif
119         ///
120         FL_OBJECT * figinset_canvas;
121 };
122 #endif