summaryrefslogtreecommitdiffstats
path: root/krecipes/src/widgets/kreruler.h
blob: c1ecf4032bf42a76add2a1dafe8907686ff073e7 (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
/* This file is part of the KDE project
   Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org>
   Copyright (C) 2005 Jason Kivlighn <jkivlighn@gmail.com>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   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., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

// Description: Ruler (header)

/******************************************************************/

#ifndef KRERULER_H
#define KRERULER_H

#include <ntqframe.h>
#include <ntqpixmap.h>

#include <kdemacros.h>

#if 0
#include <koGlobal.h>
#include <koTabChooser.h>
#endif

#include "kreunit.h"

class KoPageLayout;
class TQPainter;

enum KoTabulators { T_LEFT = 0, T_CENTER = 1, T_RIGHT = 2, T_DEC_PNT = 3, T_INVALID = -1 };
enum KoTabulatorFilling { TF_BLANK = 0, TF_DOTS = 1, TF_LINE = 2, TF_DASH = 3, TF_DASH_DOT = 4, TF_DASH_DOT_DOT = 5};

/**
 * Struct: KoTabulator
 * Defines the position of a tabulation (in pt), and its type
 */
struct KoTabulator {
    /**
     * Position of the tab in pt
     */
    double ptPos;
    /**
     * Type of tab (left/center/right/decimalpoint)
     */
    KoTabulators type;
    /**
     * Type of tab filling.
     */
    KoTabulatorFilling filling;
    /**
     * Width of the tab filling line.
     */
    double ptWidth;
    /**
     * Alignment character.
     */
    TQChar alignChar;

    bool operator==( const KoTabulator & t ) const {
        return TQABS( ptPos - t.ptPos ) < 1E-4 && type == t.type &&
               filling == t.filling && TQABS( ptWidth - t.ptWidth ) < 1E-4;
    }
    bool operator!=( const KoTabulator & t ) const {
        return !operator==(t);
    }
    // Operators used for sorting
    bool operator < ( const KoTabulator & t ) const {
        return ptPos < t.ptPos;
    }
    bool operator <= ( const KoTabulator & t ) const {
        return ptPos <= t.ptPos;
    }
    bool operator > ( const KoTabulator & t ) const {
        return ptPos > t.ptPos;
    }
};

typedef TQValueList<KoTabulator> KoTabulatorList;

class KoRulerPrivate;

/**
 * KoRuler is the horizontal or vertical ruler, to be used around
 * the drawing area of most KOffice programs.
 *
 * It shows the graduated ruler with numbering, in any of the base units (like mm/pt/inch),
 * and supports zooming, tabulators, paragraph indents, showing the mouse position, etc.
 *
 * It also offers a popupmenu upon right-clicking, for changing the unit,
 * the page layout, or removing a tab.
 */
class KoRuler : public TQFrame
{
    Q_OBJECT
    friend class KoRulerPrivate; // for the Action enum
public:
    static const int F_TABS;
    static const int F_INDENTS;
    static const int F_HELPLINES;
    static const int F_NORESIZE;

    /**
     * Create a ruler
     * TODO document params
     */
    KoRuler( TQWidget *_parent,  TQWidget *_canvas, Orientation _orientation,
             const KoPageLayout& _layout, int _flags, KoUnit::Unit _unit );
    ~KoRuler();

    /**
     * Set the unit to be used.
     */
    void setUnit( KoUnit::Unit unit );

    /**
     * Set the zoom of the ruler (default value of 1.0 is 100%)
     */
    void setZoom( const double& zoom=1.0 );
    /**
     * @return the current zoom level
     */
    const double& zoom() const { return m_zoom; }

    /**
     * Set the page layout, see @ref KoPageLayout.
     * This defines the size of the page and the margins,
     * from which the size of the ruler is deducted.
     */
    void setPageLayout( const KoPageLayout& _layout );

    /**
     * Call showMousePos(true) if the ruler should indicate the position
     * of the mouse. This is usually only the case for drawing applications,
     * so it is not enabled by default.
     */
    void showMousePos( bool _showMPos );
    /**
     * Set the position of the mouse, to update the indication in the ruler.
     * This is only effective if showMousePos(true) was called previously.
     * The position to give is not zoomed, it's in real pixel coordinates!
     */
    void setMousePos( int mx, int my );

    /**
     * Set a global offset to the X and Y coordinates.
     * Usually the main drawing area is a TQScrollView, and this is called
     * with contentsX() and contentsY(), each time those values change.
     */
    void setOffset( int _diffx, int _diffy );

    /**
     * Set the [paragraph] left indent to the specified position (in the current unit)
     */
    void setLeftIndent( double _left )
    { i_left = makeIntern( _left ); update(); }

    /**
     * Set the [paragraph] first-line left indent to the specified position (in the current unit)
     * This indent is cumulated with the left or right margin, depending on the [paragraph] direction.
     */
    void setFirstIndent( double _first )
    { i_first = makeIntern( _first ); update(); }

    /**
     * Set the [paragraph] right indent to the specified position (in the current unit)
     */
    void setRightIndent( double _right );

    /**
     * Set the [paragraph] direction. By default (rtl=false), the left indent is on the
     * left, and the right indent is on the right ;)
     * If rtl=true, it's the opposite.
     */
    void setDirection( bool rtl );

    /**
     * Set the list of tabulators to show in the ruler.
     */
    void setTabList( const KoTabulatorList & tabList );

    /**
     * Set the start and the end of the current 'frame', i.e. the part
     * of the page in which we are currently working. See KWord frames
     * for an example where this is used. The tab positions and paragraph
     * indents then become relative to the beginning of the frame, and the
     * ruler goes from frameStart to frameEnd instead of using the page margins.
     * @p _frameStart et @p _frameEnd are in pixel coordinates.
     */
    void setFrameStartEnd( int _frameStart, int _frameEnd );

    /**
     * KoRuler is in "read write" mode by default.
     * Use setReadWrite(false) to use it in read-only mode.
     */
    void setReadWrite( bool _readWrite );

    /**
     * Change the flag (i.e. activate or deactivate certain features of KoRuler)
     */
    void changeFlags(int _flags);

    /**
     * Set the size of the grid used for tabs positioning, size in pt.
     * default value is 0. 0 means no grid.
     */
    void setGridSize(double newGridSize) { gridSize=newGridSize; }

    /**
     * @return the current flags
     */
    int flags() const;

    /**
     * @return whether the current doubleClicked() signal was triggered
     * by the user double-clicking on an indent (BCI).  It returns false
     * if the user just double-clicked on an "empty" part of the ruler.
     *
     * This method is strictly provided for use in a slot connected to the
     * doubleClicked() signal; calling it at any other time results in
     * undefined behavior.
     */
    bool doubleClickedIndent() const;

    /**
     * Enable or disable the "Page Layout" menu item.
     */
    void setPageLayoutMenuItemEnabled(bool b);

    /**
     * Reimplemented from TQWidget
     */
    virtual TQSize minimumSizeHint() const;

    /**
     * Reimplemented from TQWidget
     */
    virtual TQSize sizeHint() const;

signals:
    void newPageLayout( const KoPageLayout & );
    void newLeftIndent( double );
    void newFirstIndent( double );
    void newRightIndent( double );
    /** Old signal, kept for compatibility. Use doubleClicked instead. */
    void openPageLayoutDia();
    /** This signal is emitted when double-clicking the ruler (or an indent) */
    void doubleClicked();
    /** This signal is emitted when double-clicking a tab */
    void doubleClicked( double ptPos );

    void tabListChanged( const KoTabulatorList & );
    void unitChanged( KoUnit::Unit );

    void addHelpline(const TQPoint &, bool );
    void moveHelpLines( const TQPoint &, bool );

protected:
    enum Action {A_NONE, A_BR_LEFT, A_BR_RIGHT, A_BR_TOP, A_BR_BOTTOM,
                 A_LEFT_INDENT, A_FIRST_INDENT, A_TAB, A_RIGHT_INDENT,
                 A_HELPLINES };

    void drawContents( TQPainter *_painter )
    { orientation == TQt::Horizontal ? drawHorizontal( _painter ) : drawVertical( _painter ); }

    void drawHorizontal( TQPainter *_painter );
    void drawVertical( TQPainter *_painter );

    void mousePressEvent( TQMouseEvent *e );
    void mouseReleaseEvent( TQMouseEvent *e );
    void mouseMoveEvent( TQMouseEvent *e );
    void mouseDoubleClickEvent( TQMouseEvent* );
    void resizeEvent( TQResizeEvent *e );
    void handleDoubleClick();

    double makeIntern( double _v );
    double zoomIt(const double &value) const;
    int zoomIt(const int &value) const;
    unsigned int zoomIt(const unsigned int &value) const;
    double unZoomIt(const double &value) const;
    int unZoomIt(const int &value) const;
    unsigned int unZoomIt(const unsigned int &value) const;
    void setupMenu();
    void uncheckMenu();
    void searchTab(int mx);
    void drawLine(int oldX, int newX);

private:
    double applyRtlAndZoom( double value ) const;
    double unZoomItRtl( int pixValue ) const;
    double lineDistance() const;
    bool willRemoveTab( int y ) const;

    KoRulerPrivate *d;

    TQt::Orientation orientation;
    int diffx, diffy;
    double i_left, i_first;
    TQPixmap buffer;
    double m_zoom, m_1_zoom;
    KoUnit::Unit m_unit;
    bool hasToDelete;
    bool showMPos;
    bool m_bFrameStartSet;
    bool m_bReadWrite;
    int mposX, mposY;
    int frameStart;

    double gridSize;

protected slots:
    void slotMenuActivated( int i );
    void pageLayoutDia() { emit doubleClicked()/*openPageLayoutDia()*/; }
    void rbRemoveTab();

};

inline double KoRuler::zoomIt(const double &value) const {
    if (m_zoom==1.0)
        return value;
    return m_zoom*value;
}

inline int KoRuler::zoomIt(const int &value) const {
    if (m_zoom==1.0)
        return value;
    return tqRound(m_zoom*value);
}

inline unsigned int KoRuler::zoomIt(const unsigned int &value) const {
    if (m_zoom==1.0)
        return value;
    return static_cast<unsigned int>(tqRound(m_zoom*value));
}

inline double KoRuler::unZoomIt(const double &value) const {
    if(m_zoom==1.0)
        return value;
    return value*m_1_zoom;
}

inline int KoRuler::unZoomIt(const int &value) const {
    if(m_zoom==1.0)
        return value;
    return tqRound(value*m_1_zoom);
}

inline unsigned int KoRuler::unZoomIt(const unsigned int &value) const {
    if(m_zoom==1.0)
        return value;
    return static_cast<unsigned int>(tqRound(value*m_1_zoom));
}

#endif