summaryrefslogtreecommitdiffstats
path: root/kate/part/kateviewinternal.h
blob: 8e7b3a8965f7a748ba9700ea453a5b9efaacca34 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
/* This file is part of the KDE libraries
   Copyright (C) 2002 John Firebaugh <jfirebaugh@kde.org>
   Copyright (C) 2002 Joseph Wenninger <jowenn@kde.org>
   Copyright (C) 2002 Christoph Cullmann <cullmann@kde.org>

   Based on:
     KWriteView : Copyright (C) 1999 Jochen Wilhelmy <digisnap@cs.tu-berlin.de>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#ifndef _KATE_VIEW_INTERNAL_
#define _KATE_VIEW_INTERNAL_

#include "katecursor.h"
#include "katesupercursor.h"
#include "katelinerange.h"
#include "katetextline.h"
#include "katedocument.h"

#include <tqpoint.h>
#include <tqtimer.h>
#include <tqintdict.h>

class KateView;
class KateIconBorder;
class KateScrollBar;

class TQHBoxLayout;
class TQVBoxLayout;
class TQScrollBar;

enum Bias
{
    left  = -1,
    none  =  0,
    right =  1
};

class KateViewInternal : public TQWidget
{
    Q_OBJECT

    friend class KateView;
    friend class KateIconBorder;
    friend class KateScrollBar;
    friend class CalculatingCursor;
    friend class BoundedCursor;
    friend class WrappingCursor;

  public:
    KateViewInternal ( KateView *view, KateDocument *doc );
    ~KateViewInternal ();

  //BEGIN EDIT STUFF
  public:
    void editStart ();
    void editEnd (int editTagLineStart, int editTagLineEnd, bool tagFrom);

    void editSetCursor (const KateTextCursor &cursor);

  private:
    uint editSessionNumber;
    bool editIsRunning;
    KateTextCursor editOldCursor;
  //END

  //BEGIN TAG & CLEAR & UPDATE STUFF
  public:
    bool tagLine (const KateTextCursor& virtualCursor);

    bool tagLines (int start, int end, bool realLines = false);
    bool tagLines (KateTextCursor start, KateTextCursor end, bool realCursors = false);

    void tagAll ();

    void clear ();
  //END

  private:
    void updateView (bool changed = false, int viewLinesScrolled = 0);
    void makeVisible (const KateTextCursor& c, uint endCol, bool force = false, bool center = false, bool calledExternally = false);

  public:
    inline const KateTextCursor& startPos() const { return m_startPos; }
    inline uint startLine () const { return m_startPos.line(); }
    inline uint startX () const { return m_startX; }

    KateTextCursor endPos () const;
    uint endLine () const;

    KateLineRange yToKateLineRange(uint y) const;

    void prepareForDynWrapChange();
    void dynWrapChanged();

    KateView *view () { return m_view; }

  public slots:
    void slotIncFontSizes();
    void slotDecFontSizes();

  private slots:
    void scrollLines(int line); // connected to the sliderMoved of the m_lineScroll
    void scrollViewLines(int offset);
    void scrollNextPage();
    void scrollPrevPage();
    void scrollPrevLine();
    void scrollNextLine();
    void scrollColumns (int x); // connected to the valueChanged of the m_columnScroll
    void viewSelectionChanged ();

  public:
    void doReturn();
    void doDelete();
    void doBackspace();
    void doTranspose();
    void doDeleteWordLeft();
    void doDeleteWordRight();

    void cursorLeft(bool sel=false);
    void cursorRight(bool sel=false);
    void wordLeft(bool sel=false);
    void wordRight(bool sel=false);
    void home(bool sel=false);
    void end(bool sel=false);
    void cursorUp(bool sel=false);
    void cursorDown(bool sel=false);
    void cursorToMatchingBracket(bool sel=false);
    void scrollUp();
    void scrollDown();
    void topOfView(bool sel=false);
    void bottomOfView(bool sel=false);
    void pageUp(bool sel=false);
    void pageDown(bool sel=false);
    void top(bool sel=false);
    void bottom(bool sel=false);
    void top_home(bool sel=false);
    void bottom_end(bool sel=false);

    inline const KateTextCursor& getCursor() { return cursor; }
    TQPoint cursorCoordinates();

    void paintText (int x, int y, int width, int height, bool paintOnlyDirty = false);

  // EVENT HANDLING STUFF - IMPORTANT
  protected:
    void paintEvent(TQPaintEvent *e);
    bool eventFilter( TQObject *obj, TQEvent *e );
    void keyPressEvent( TQKeyEvent* );
    void keyReleaseEvent( TQKeyEvent* );
    void resizeEvent( TQResizeEvent* );
    void mousePressEvent(       TQMouseEvent* );
    void mouseDoubleClickEvent( TQMouseEvent* );
    void mouseReleaseEvent(     TQMouseEvent* );
    void mouseMoveEvent(        TQMouseEvent* );
    void dragEnterEvent( TQDragEnterEvent* );
    void dragMoveEvent( TQDragMoveEvent* );
    void dropEvent( TQDropEvent* );
    void showEvent ( TQShowEvent *);
    void wheelEvent(TQWheelEvent* e);
    void focusInEvent (TQFocusEvent *);
    void focusOutEvent (TQFocusEvent *);

    void contextMenuEvent ( TQContextMenuEvent * e );

  private slots:
    void tripleClickTimeout();

  signals:
    // emitted when KateViewInternal is not handling its own URI drops
    void dropEventPass(TQDropEvent*);

  private slots:
    void slotRegionVisibilityChangedAt(unsigned int);
    void slotRegionBeginEndAddedRemoved(unsigned int);
    void slotCodeFoldingChanged();

  private:
    void moveChar( Bias bias, bool sel );
    void moveEdge( Bias bias, bool sel );
    KateTextCursor maxStartPos(bool changed = false);
    void scrollPos(KateTextCursor& c, bool force = false, bool calledExternally = false);
    void scrollLines( int lines, bool sel );

    uint linesDisplayed() const;

    int lineToY(uint viewLine) const;

    void updateSelection( const KateTextCursor&, bool keepSel );
    void updateCursor( const KateTextCursor& newCursor, bool force = false, bool center = false, bool calledExternally = false );
    void updateBracketMarks();

    void paintCursor();

    void updateMicroFocusHint();

    void placeCursor( const TQPoint& p, bool keepSelection = false, bool updateSelection = true );
    bool isTargetSelected( const TQPoint& p );

    void doDrag();

    KateView *m_view;
    KateDocument* m_doc;
    class KateIconBorder *leftBorder;

    int mouseX;
    int mouseY;
    int scrollX;
    int scrollY;

    Qt::tqCursorShape m_mouseCursor;

    KateSuperCursor cursor;
    KateTextCursor displayCursor;
    int cXPos;

    bool possibleTripleClick;

    // Bracket mark
    KateBracketRange bm;

    enum DragState { diNone, diPending, diDragging };

    struct _dragInfo {
      DragState    state;
      TQPoint       start;
      TQTextDrag*   dragObject;
    } dragInfo;

    uint iconBorderHeight;

    //
    // line scrollbar + first visible (virtual) line in the current view
    //
    KateScrollBar *m_lineScroll;
    TQWidget* m_dummy;
    TQVBoxLayout* m_lineLayout;
    TQHBoxLayout* m_colLayout;

    // These are now cursors to account for word-wrap.
    KateSuperCursor m_startPos;

    // This is set to false on resize or scroll (other than that called by makeVisible),
    // so that makeVisible is again called when a key is pressed and the cursor is in the same spot
    bool m_madeVisible;
    bool m_shiftKeyPressed;

    // How many lines to should be kept visible above/below the cursor when possible
    void setAutoCenterLines(int viewLines, bool updateView = true);
    int m_autoCenterLines;
    int m_minLinesVisible;

    //
    // column scrollbar + x position
    //
    TQScrollBar *m_columnScroll;
    int m_startX;

    // has selection changed while your mouse or shift key is pressed
    bool m_selChangedByUser;
    KateTextCursor selectAnchor;

    enum SelectionMode { Default=0, Word, Line, Mouse }; ///< for drag selection. @since 2.3
    uint m_selectionMode;
    // when drag selecting after double/triple click, keep the initial selected
    // word/line independant of direction.
    // They get set in the event of a double click, and is used with mouse move + leftbutton
    KateTextCursor selStartCached;
    KateTextCursor selEndCached;

    //
    // lines Ranges, mostly useful to speedup + dyn. word wrap
    //
    TQMemArray<KateLineRange> lineRanges;

    // maximal lenght of textlines visible from given startLine
    int maxLen(uint startLine);

    // are we allowed to scroll columns?
    bool columnScrollingPossible ();

    // returns the maximum X value / col value a cursor can take for a specific line range
    int lineMaxCursorX(const KateLineRange& range);
    int lineMaxCol(const KateLineRange& range);

    // get the values for a specific range.
    // specify lastLine to get the next line of a range.
    KateLineRange range(int realLine, const KateLineRange* previous = 0L);

    KateLineRange currentRange();
    KateLineRange previousRange();
    KateLineRange nextRange();

    // Finds the lineRange currently occupied by the cursor.
    KateLineRange range(const KateTextCursor& realCursor);

    // Returns the lineRange of the specified realLine + viewLine.
    KateLineRange range(uint realLine, int viewLine);

    // find the view line of cursor c (0 = same line, 1 = down one, etc.)
    uint viewLine(const KateTextCursor& realCursor);

    // find the view line of the cursor, relative to the display (0 = top line of view, 1 = second line, etc.)
    // if limitToVisible is true, only lines which are currently visible will be searched for, and -1 returned if the line is not visible.
    int displayViewLine(const KateTextCursor& virtualCursor, bool limitToVisible = false);

    // find the index of the last view line for a specific line
    uint lastViewLine(uint realLine);

    // count the number of view lines for a real line
    uint viewLineCount(uint realLine);

    // find the cursor offset by (offset) view lines from a cursor.
    // when keepX is true, the column position will be calculated based on the x
    // position of the specified cursor.
    KateTextCursor viewLineOffset(const KateTextCursor& virtualCursor, int offset, bool keepX = false);

    // These variable holds the most recent maximum real & visible column number
    bool m_preserveMaxX;
    int m_currentMaxX;

    bool m_usePlainLines; // accept non-highlighted lines if this is set

    inline KateTextLine::Ptr textLine( int realLine )
    {
      if (m_usePlainLines)
        return m_doc->plainKateTextLine(realLine);
      else
        return m_doc->kateTextLine(realLine);
    }

    bool m_updatingView;
    int m_wrapChangeViewLine;
    KateTextCursor m_cachedMaxStartPos;

  private slots:
    void doDragScroll();
    void startDragScroll();
    void stopDragScroll();

  private:
    // Timers
    TQTimer m_dragScrollTimer;
    TQTimer m_scrollTimer;
    TQTimer m_cursorTimer;
    TQTimer m_textHintTimer;

    static const int scrollTime = 30;
    static const int scrollMargin = 16;

  private slots:
    void scrollTimeout ();
    void cursorTimeout ();
    void textHintTimeout ();

  //TextHint
 public:
   void enableTextHints(int timeout);
   void disableTextHints();

 private:
   bool m_textHintEnabled;
   int m_textHintTimeout;
   int m_textHintMouseX;
   int m_textHintMouseY;

  /**
   * IM input stuff
   */
  protected:
    void imStartEvent( TQIMEvent *e );
    void imComposeEvent( TQIMEvent *e );
    void imEndEvent( TQIMEvent *e );

  private:
    int m_imPreeditStartLine;
    int m_imPreeditStart;
    int m_imPreeditLength;
    int m_imPreeditSelStart;
};

#endif

// kate: space-indent on; indent-width 2; replace-tabs on;