#define BUFFER_VIEW_H
#include "DocumentClassPtr.h"
+#include "TexRow.h"
#include "update_flags.h"
#include "support/strfwd.h"
class FuncStatus;
class Intl;
class Inset;
-class PainterInfo;
+class Length;
class ParIterator;
class ParagraphMetrics;
class Point;
+class Row;
+class TexRow;
class Text;
class TextMetrics;
/// Scrollbar Parameters.
struct ScrollbarParameters
{
+ // These parameters are normalized against the screen geometry and pixel
+ // coordinates. Position 0 corresponds to the top the the screen.
ScrollbarParameters()
- : min(0), max(0), position(0), single_step(1), page_step(1)
+ : min(0), max(0), single_step(1), page_step(1)
{}
/// Minimum scrollbar position in pixels.
int min;
/// Maximum scrollbar position in pixels.
int max;
- /// Current position in the document in pixels.
- int position;
/// Line-scroll amount in pixels.
int single_step;
/// Page-scroll amount in pixels.
/// left margin
int leftMargin() const;
+ /// return the on-screen size of this length
+ /*
+ * This is a wrapper around Length::inPixels that uses the
+ * bufferview width as width and the EM value of the default
+ * document font.
+ */
+ int inPixels(Length const & len) const;
+
/// \return true if the BufferView is at the top of the document.
bool isTopScreen() const;
/// \return true if the BufferView is at the bottom of the document.
bool isBottomScreen() const;
- /// perform pending metrics updates.
- /** \c Update::FitCursor means first to do a FitCursor, and to
+ /// Add \p flags to current update flags and trigger an update.
+ /* If this method is invoked several times before the update
+ * actually takes place, the effect is cumulative.
+ * \c Update::FitCursor means first to do a FitCursor, and to
* force an update if screen position changes.
* \c Update::Force means to force an update in any case.
- * \retval true if a screen redraw is needed
*/
void processUpdateFlags(Update::flags flags);
/// Only to be called with good y coordinates (after a bv::metrics)
bool needsFitCursor() const;
+ /// returns true if this row needs to be repainted (to erase caret)
+ bool needRepaint(Text const * text, Row const & row) const;
+
// Returns the amount of horizontal scrolling applied to the
// top-level row where the cursor lies
int horizScrollOffset() const;
+ // Returns the amount of horizontal scrolling applied to the
+ // row of text starting at (pit, pos)
+ int horizScrollOffset(Text const * text,
+ pit_type pit, pos_type pos) const;
- // Points to the top-level row where the cursor lies (during draw).
- CursorSlice const & currentRowSlice() const;
-
- // Points to the top-level row where the cursor lied at last draw event.
- CursorSlice const & lastRowSlice() const;
+ // Returns true if the row of text starting at (pit, pos) was scrolled
+ // at the last draw event.
+ bool hadHorizScrollOffset(Text const * text,
+ pit_type pit, pos_type pos) const;
/// reset the scrollbar to reflect current view position.
void updateScrollbar();
void gotoLabel(docstring const & label);
/// set the cursor based on the given TeX source row.
- void setCursorFromRow(int row);
+ bool setCursorFromRow(int row);
+ /// set the cursor based on the given start and end TextEntries.
+ bool setCursorFromEntries(TexRow::TextEntry start, TexRow::TextEntry end);
/// set cursor to the given inset. Return true if found.
bool setCursorFromInset(Inset const *);
/// access to full cursor.
Cursor const & cursor() const;
/// sets cursor.
- /// This will also open all relevant collapsable insets.
+ /// This will also open all relevant collapsible insets.
void setCursor(DocIterator const &);
+ /// set the selection up to dit.
+ void setCursorSelectionTo(DocIterator const & dit);
/// Check deleteEmptyParagraphMechanism and update metrics if needed.
/// \retval true if an update was needed.
bool checkDepm(Cursor & cur, Cursor & old);
/// update the internal \c ViewMetricsInfo.
void updateMetrics();
+ // this is the "nodraw" drawing stage: only set the positions of the
+ // insets in metrics cache.
+ void updatePosCache();
+
///
TextMetrics const & textMetrics(Text const * t) const;
TextMetrics & textMetrics(Text const * t);
bool paragraphVisible(DocIterator const & dit) const;
/// is the cursor currently visible in the view
bool cursorInView(Point const & p, int h) const;
- /// get the position and height of the cursor
- void cursorPosAndHeight(Point & p, int & h) const;
-
+ /// get the position and height of the caret
+ void caretPosAndHeight(Point & p, int & h) const;
///
- void draw(frontend::Painter & pain);
+ void draw(frontend::Painter & pain, bool paint_caret);
/// get this view's keyboard map handler.
Intl & getIntl();
/// Update current paragraph metrics.
/// \return true if no further update is needed.
bool singleParUpdate();
+ /// do the work for the public updateMetrics()
+ void updateMetrics(Update::flags & update_flags);
// Set the row on which the cursor lives.
void setCurrentRowSlice(CursorSlice const & rowSlice);
// Check whether the row where the cursor lives needs to be scrolled.
// Update the drawing strategy if needed.
- void checkCursorScrollOffset(PainterInfo & pi);
+ void checkCursorScrollOffset();
/// The minimal size of the document that is visible. Used
/// when it is allowed to scroll below the document.
projects / lyx.git / blobdiff