src/BufferView.h

   1 // -*- C++ -*-
   2 /* This file is part of
   3  * ======================================================
   4  *
   5  *           LyX, The Document Processor
   6  *
   7  *           Copyright (C) 1995 Matthias Ettrich
   8  *           Copyright (C) 1995-1998 The LyX Team.
   9  *
  10  * ======================================================*/
  11
  12 #ifndef BUFFER_VIEW_H
  13 #define BUFFER_VIEW_H
  14
  15 #ifdef __GNUG__
  16 #pragma interface
  17 #endif
  18
  19 #include FORMS_H_LOCATION
  20 #include "BackStack.h"
  21
  22 class LyXView;
  23 class Buffer;
  24 class LyXScreen;
  25 class Inset;
  26
  27 ///
  28 class BufferView {
  29 public:
  30         ///
  31         BufferView(LyXView *owner, int ,int ,int, int);
  32         ///
  33         Buffer *currentBuffer() { return _buffer; }
  34         ///
  35         FL_OBJECT *getWorkArea() { return work_area; }
  36         ///
  37         void setBuffer(Buffer *b);
  38         ///
  39         void resize();
  40         ///
  41         void redraw();
  42         ///
  43         void fitCursor();
  44         ///
  45         void update();
  46         ///
  47         void updateScrollbar();
  48         ///
  49         void redoCurrentBuffer();
  50         ///
  51         int resizeCurrentBuffer();
  52         ///
  53         void gotoError();
  54         ///
  55         void cursorPrevious();
  56         ///
  57         void cursorNext();
  58         ///
  59         bool available() const;
  60         ///
  61         LyXView *getOwner() { return _owner; }
  62         ///
  63         LyXScreen *getScreen()
  64         {
  65                 fl_set_timer(timer_cursor, 0.4);
  66                 return screen;
  67         }
  68         ///
  69         void savePosition();
  70         ///
  71         void restorePosition();
  72 private:
  73         /// Update pixmap of screen
  74         void updateScreen();
  75         ///
  76         int workAreaExpose();
  77         ///
  78         void create_view(int, int, int, int);
  79         ///
  80         Inset * checkInsetHit(int &x, int &y);
  81         ///
  82         int ScrollUp(long time);
  83         ///
  84         int ScrollDown(long time);
  85         ///
  86         void ScrollUpOnePage(long /*time*/);
  87         ///
  88         void ScrollDownOnePage(long /*time*/);
  89
  90 public:
  91         /// A callback for the up arrow in the scrollbar.
  92         static void UpCB(FL_OBJECT *ob, long);
  93
  94         /// A callback for the slider in the scrollbar.
  95         static void ScrollCB(FL_OBJECT *ob, long);
  96
  97         /// A callback for the down arrow in the scrollbar.
  98         static void DownCB(FL_OBJECT *ob, long);
  99
 100         ///
 101         static void CursorToggleCB(FL_OBJECT *ob, long);
 102         /** Work area free object handler
 103          */
 104         static int work_area_handler(FL_OBJECT *, int event,
 105                                      FL_Coord, FL_Coord, int key, void *xev);
 106 private:
 107         ///
 108         int WorkAreaMotionNotify(FL_OBJECT *ob,
 109                                  Window win,
 110                                  int w, int h,
 111                                  XEvent *ev, void *d);
 112         ///
 113         int WorkAreaSelectionNotify(FL_OBJECT *, Window win,
 114                                     int /*w*/, int /*h*/,
 115                                     XEvent *event, void */*d*/);
 116         ///
 117         int WorkAreaButtonPress(FL_OBJECT *ob,
 118                                 Window win,
 119                                 int w, int h,
 120                                 XEvent *ev, void *d);
 121         ///
 122         int WorkAreaButtonRelease(FL_OBJECT *ob,
 123                                   Window win,
 124                                   int w, int h,
 125                                   XEvent *ev, void *d);
 126         ///
 127         LyXView *_owner;
 128         ///
 129         Buffer *_buffer;
 130         ///
 131         LyXScreen *screen;
 132         ///
 133         long current_scrollbar_value;
 134         ///
 135         int work_area_width;
 136         ///
 137         bool lyx_focus;
 138         ///
 139         bool work_area_focus;
 140         ///
 141         FL_OBJECT *work_area;
 142         ///
 143         FL_OBJECT *figinset_canvas;
 144         ///
 145         FL_OBJECT *scrollbar;
 146         ///
 147         FL_OBJECT *button_down;
 148         ///
 149         FL_OBJECT *button_up;
 150         ///
 151         FL_OBJECT *timer_cursor;
 152         ///
 153         BackStack backstack;
 154         ///
 155         int last_click_x, last_click_y;
 156 };
 157
 158 #endif