4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
9 * \author Abdelrazak Younes
11 * Full author contact details are available in file CREDITS.
14 #ifndef BASE_WORKAREA_H
15 #define BASE_WORKAREA_H
17 #include "frontends/KeyModifier.h"
27 * The work area class represents the widget that provides the
28 * view onto a document. It is owned by the BufferView, and
29 * is responsible for handing events back to its owning BufferView.
30 * It works in concert with the BaseScreen class to update the
31 * widget view of a document.
42 virtual BufferView & bufferView() = 0;
44 virtual BufferView const & bufferView() const = 0;
46 /// return true if has the keyboard input focus.
47 virtual bool hasFocus() const = 0;
49 /// return true if has this WorkArea is visible.
50 virtual bool isVisible() const = 0;
52 /// return the width of the work area in pixels
53 virtual int width() const = 0;
55 /// return the height of the work area in pixels
56 virtual int height() const = 0;
59 * Update the scrollbar.
60 * @param height the total document height in pixels
61 * @param pos the current position in the document, in pixels
62 * @param line_height the line-scroll amount, in pixels
64 virtual void setScrollbarParams(int height, int pos, int line_height) = 0;
67 virtual void scheduleRedraw() = 0;
69 /// redraw the screen, without using existing pixmap
70 virtual void redraw() = 0;
72 virtual void stopBlinkingCursor() = 0;
73 virtual void startBlinkingCursor() = 0;
75 /// Process Key pressed event.
76 /// This needs to be public because it is accessed externally by GuiView.
77 virtual void processKeySym(KeySymbol const & key, KeyModifier mod) = 0;
79 /// close this work area.
80 /// Slot for Buffer::closing signal.
81 virtual void close() = 0;
82 /// This function is called when the buffer readonly status change.
83 virtual void setReadOnly(bool) = 0;
85 /// Update window titles of all users.
86 virtual void updateWindowTitle() = 0;
89 } // namespace frontend
92 #endif // BASE_WORKAREA_H