summaryrefslogtreecommitdiffstats
path: root/kformula/kformulawidget.h
blob: 43bb701f9b4ace134c823571ebc07ed48aeb2129 (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
/* This file is part of the KDE project
   Copyright (C) 2001 Andrea Rizzi <[email protected]>
	              Ulrich Kuettler <[email protected]>

   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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KFORMULAWIDGET_H
#define KFORMULAWIDGET_H

#include <tqdom.h>
#include <tqpixmap.h>
#include <tqpoint.h>
#include <tqwidget.h>

#include <kformuladefs.h>
#include <kformulaview.h>

KFORMULA_NAMESPACE_BEGIN

class FormulaCursor;
class Container;

KFORMULA_NAMESPACE_END


/**
 * The view. A widget that shows the formula. There are methods
 * to move the cursor around. To edit the formula use the document.
 */
class KFormulaWidget : public TQWidget {
    Q_OBJECT
  TQ_OBJECT

public:
    KFormulaWidget(KFormula::Container*, TQWidget* parent=0, const char* name=0, WFlags f=0);
    ~KFormulaWidget();


    /**
     * @returns the point inside the formula widget where the cursor is.
     */
    TQPoint getCursorPoint() const;

    /**
     * Puts the widget in read only mode.
     */
    void setReadOnly(bool ro);

    const KFormula::View* view() const { return &formulaView; }
    KFormula::View* view() { return &formulaView; }

public slots:

    void slotSelectAll();

signals:

    /**
     * Is emitted every time the cursor might have changed.
     */
    void cursorChanged(bool visible, bool selecting);

protected slots:

    /**
     * The formula has changed and needs to be redrawn.
     */
    void slotFormulaChanged(int width, int height);

    void slotCursorChanged(bool visible, bool selecting);

protected:

    virtual void mousePressEvent(TQMouseEvent* event);
    virtual void mouseReleaseEvent(TQMouseEvent* event);
    virtual void mouseDoubleClickEvent(TQMouseEvent* event);
    virtual void mouseMoveEvent(TQMouseEvent* event);

    virtual void paintEvent(TQPaintEvent* event);
    virtual void keyPressEvent(TQKeyEvent* event);
    virtual void focusInEvent(TQFocusEvent* event);
    virtual void focusOutEvent(TQFocusEvent* event);

    /**
     * The document we show.
     */
    KFormula::Container* getDocument();

    /**
     * Our cursor.
     */
    KFormula::FormulaCursor* getCursor();

private:

    /**
     * This widget is a wrapper around the actual view.
     */
    KFormula::View formulaView;

    TQPixmap buffer;
};

#endif // KFORMULAWIDGET_H