* \author unknown
* \author John Levon
*
- * Full author contact details are available in file CREDITS
+ * Full author contact details are available in file CREDITS.
*/
#ifndef SCREEN_H
#define SCREEN_H
-#include "RowList.h"
class LyXText;
-class LyXCursor;
+class CursorSlice;
class WorkArea;
class BufferView;
+class ViewMetricsInfo;
+
/**
* LyXScreen - document rendering management
virtual ~LyXScreen();
- /**
- * draw the screen from a given position
- * @param y the text position to draw from
- *
- * Uses as much of the already printed pixmap as possible
- */
- virtual void draw(LyXText *, BufferView *, unsigned int y) = 0;
-
- /**
- * fit the cursor onto the visible work area, scrolling if necessary
- * @param bv the buffer view
- * @param vheight the height of the visible region
- * @param base_y the top of the lyxtext to look at
- * @param x the new x position
- * @param y the new y position
- * @param a ascent of the cursor's row
- * @param d descent of the cursor's row
- * @return true if the work area needs scrolling as a result
- */
- bool fitManualCursor(BufferView * bv, LyXText * text,
- int x, int y, int a, int d);
-
/// redraw the screen, without using existing pixmap
- virtual void redraw(BufferView * bv, LyXText * text);
-
- /**
- * topCursorVisible - get a new "top" to make the cursor visible
- * in a LyXText
- *
- * This helper function calculates a new y co-ordinate for
- * the top of the containing region such that the cursor contained
- * within the LyXText is "nicely" visible.
- */
- virtual unsigned int topCursorVisible(LyXText *);
-
- /**
- * fitCursor - fit the cursor onto the work area
- * @param text the text containing the cursor
- * @param bv the bufferview
- * @return true if a change was necessary
- *
- * Scrolls the screen so that the cursor is visible
- */
- virtual bool fitCursor(LyXText *, BufferView *);
-
- /**
- * update - update part of the screen rendering
- * @param bv the bufferview
- * @param xo the x offset into the text
- * @param yo the x offset into the text
- *
- * Updates part of the screen. If bv->text->needRefresh is
- * true, we update from the
- * point of change to the end of the screen.
- */
- virtual void update(BufferView & bv, int yo = 0, int xo = 0);
+ virtual void redraw(BufferView & bv, ViewMetricsInfo const & vi);
+
+ /// grey out (no buffer)
+ void greyOut();
/// hide the visible cursor, if it is visible
void hideCursor();
-
+
/// show the cursor if it is not visible
void showCursor(BufferView & bv);
/// toggle the cursor's visibility
void toggleCursor(BufferView & bv);
- /// FIXME
- virtual void toggleSelection(LyXText *, BufferView *, bool = true,
- int y_offset = 0, int x_offset = 0);
-
protected:
/// cause the display of the given area of the work area
virtual void expose(int x, int y, int w, int h) = 0;
/// hide the cursor
virtual void removeCursor() = 0;
- /// y1 and y2 are coordinates of the screen
- void drawFromTo(LyXText *, BufferView *, int y1, int y2,
- int y_offset = 0, int x_offset = 0);
-
private:
- /// grey out (no buffer)
- void greyOut();
+ ///
+ void checkAndGreyOut();
+
+ ///
+ bool greyed_out_;
/// is the cursor currently displayed
bool cursor_visible_;
-
- /// is the screen displaying text or the splash screen?
- bool greyed_out_;
};
#endif // SCREEN_H