Kate
katelayoutcache.h
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00020 #ifndef KATELAYOUTCACHE_H
00021 #define KATELAYOUTCACHE_H
00022
00023 #include <QThreadStorage>
00024 #include <QPair>
00025
00026 #include <ktexteditor/range.h>
00027
00028 #include "katetextlayout.h"
00029
00030 class KateRenderer;
00031 class KateEditInfo;
00032
00033 namespace KTextEditor { class Document; }
00034
00035 class KateLineLayoutMap
00036 {
00037 public:
00038 KateLineLayoutMap();
00039 ~KateLineLayoutMap();
00040
00041 inline void clear();
00042
00043 inline bool contains(int i) const;
00044
00045 inline void insert(int realLine, const KateLineLayoutPtr& lineLayoutPtr);
00046
00047 inline void viewWidthIncreased();
00048 inline void viewWidthDecreased(int newWidth);
00049
00050 inline void relayoutLines(int startRealLine, int endRealLine);
00051
00052 inline void slotEditDone(int fromLine, int toLine, int shiftAmount);
00053
00054 KateLineLayoutPtr& operator[](int i);
00055
00056
00057
00058 typedef QPair<int, KateLineLayoutPtr> LineLayoutPair;
00059 private:
00060 typedef QVector<LineLayoutPair> LineLayoutMap;
00061 LineLayoutMap m_lineLayouts;
00062 };
00063
00064
00079 class KateLayoutCache : public QObject
00080 {
00081 Q_OBJECT
00082
00083 public:
00084 explicit KateLayoutCache(KateRenderer* renderer, QObject* parent);
00085
00086 void clear();
00087
00088 int viewWidth() const;
00089 void setViewWidth(int width);
00090
00091 bool wrap() const;
00092 void setWrap(bool wrap);
00093
00094 bool acceptDirtyLayouts() const;
00095 void setAcceptDirtyLayouts(bool accept);
00096
00097
00110 KateLineLayoutPtr line(int realLine, int virtualLine = -1) const;
00112 KateLineLayoutPtr line(const KTextEditor::Cursor& realCursor) const;
00113
00115 KateTextLayout textLayout(const KTextEditor::Cursor& realCursor) const;
00116
00119 KateTextLayout textLayout(uint realLine, int viewLine) const;
00120
00121
00122
00124 KateTextLayout& viewLine(int viewLine) const;
00125
00126
00127
00128 int displayViewLine(const KTextEditor::Cursor& virtualCursor, bool limitToVisible = false) const;
00129
00130 int viewCacheLineCount() const;
00131 KTextEditor::Cursor viewCacheStart() const;
00132 KTextEditor::Cursor viewCacheEnd() const;
00133 void updateViewCache(const KTextEditor::Cursor& startPos, int newViewLineCount = -1, int viewLinesScrolled = 0);
00134
00135 void relayoutLines(int startRealLine, int endRealLine);
00136
00137
00138 int lastViewLine(int realLine) const;
00139
00140 int viewLine(const KTextEditor::Cursor& realCursor) const;
00141 int viewLineCount(int realLine) const;
00142
00143 void viewCacheDebugOutput() const;
00144
00145
00146 private Q_SLOTS:
00147 void slotEditDone(KateEditInfo* edit);
00148
00149 private:
00150 void updateCache(int fromLine, int toLine, int shiftAmount);
00151
00152 void expireUnused();
00153 void expireCount(int numberToExpire);
00154
00155 KateRenderer* m_renderer;
00156
00163 mutable KateLineLayoutMap m_lineLayouts;
00164
00165
00166 KTextEditor::Cursor m_startPos;
00167 mutable QVector<KateTextLayout> m_textLayouts;
00168
00169 int m_viewWidth;
00170 bool m_wrap;
00171
00172 QThreadStorage<bool*> m_acceptDirtyLayouts;
00173 };
00174
00175 #endif
00176
00177