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"
30 * The work area class represents the widget that provides the
31 * view onto a document. It is owned by the BufferView, and
32 * is responsible for handing events back to its owning BufferView.
33 * It works in concert with the BaseScreen class to update the
34 * widget view of a document.
45 virtual void setLyXView(LyXView & lv) = 0;
48 virtual BufferView & bufferView() = 0;
50 virtual BufferView const & bufferView() const = 0;
52 /// return true if has the keyboard input focus.
53 virtual bool hasFocus() const = 0;
55 /// return true if has this WorkArea is visible.
56 virtual bool isVisible() const = 0;
58 /// return the width of the work area in pixels
59 virtual int width() const = 0;
61 /// return the height of the work area in pixels
62 virtual int height() const = 0;
65 * Update the scrollbar.
66 * @param height the total document height in pixels
67 * @param pos the current position in the document, in pixels
68 * @param line_height the line-scroll amount, in pixels
70 virtual void setScrollbarParams(int height, int pos, int line_height) = 0;
73 virtual void scheduleRedraw() = 0;
75 /// redraw the screen, without using existing pixmap
76 virtual void redraw() = 0;
78 virtual void stopBlinkingCursor() = 0;
79 virtual void startBlinkingCursor() = 0;
81 /// Process Key pressed event.
82 /// This needs to be public because it is accessed externally by GuiView.
83 virtual void processKeySym(KeySymbol const & key, KeyModifier mod) = 0;
85 /// close this work area.
86 /// Slot for Buffer::closing signal.
87 virtual void close() = 0;
88 /// This function is called when the buffer readonly status change.
89 virtual void setReadOnly(bool) = 0;
91 /// Update window titles of all users.
92 virtual void updateWindowTitle() = 0;
95 } // namespace frontend
98 #endif // BASE_WORKAREA_H