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
|
/* This file is part of the KDE libraries
Copyright (C) 2004 Antonio Larrosa <larrosa@kde.org
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 __KPIXMAPREGIONSELECTORWIDGET_H__
#define __KPIXMAPREGIONSELECTORWIDGET_H__
#include <tqvbox.h>
#include <tqpixmap.h>
#include <tqrect.h>
#include <tqlabel.h>
#include <kimageeffect.h>
class KPopupMenu;
#include "kopete_export.h"
/**
* KPixmapRegionSelectorWidget is a widget that shows a picture and provides the
* user with a friendly way to select a rectangular subregion of the pixmap.
*
* NOTE: There are two copies of this .h and the .cpp file, with subtle differences.
* One copy is in kdelibs/kdeui, and the other copy is in kdepim/libkdepim
* This is because kdepim has to remain backwards compatible. Any changes
* to either file should be made to the other.
*
* @author Antonio Larrosa <larrosa@kde.org>
* @since 3.4
*/
class KOPETE_EXPORT KPixmapRegionSelectorWidget : public QWidget
{
Q_OBJECT
public:
/**
* Constructor for a KPixmapRegionSelectorWidget.
*/
KPixmapRegionSelectorWidget( TQWidget *parent = 0L, const char *name=0L);
/**
* Destructor for a KPixmapRegionSelectorWidget
*/
~KPixmapRegionSelectorWidget();
/**
* Sets the pixmap which will be shown for the user to select a region from.
* @param pixmap The pixmap. Must be non-null.
*
*/
void setPixmap( const TQPixmap &pixmap );
/**
* @return the original whole pixmap that we're using in this widget as the
* pixmap the user is selecting a region from.
*/
TQPixmap pixmap() const { return m_unzoomedPixmap; };
/**
* Sets the selected region to be @p rect (in zoomed pixmap coordinates)
*/
void setSelectedRegion(const TQRect &rect);
/**
* Returns the selected region ( in zoomed pixmap coordinates )
*/
TQRect selectedRegion() const;
/**
* Returns the selected region ( in unzoomed, original pixmap coordinates )
*/
TQRect unzoomedSelectedRegion() const;
/**
* Resets the selection to use the whole image
*/
void resetSelection();
/**
* @returns a TQImage object with just the region the user selected from the
* image
*/
TQImage selectedImage() const;
/**
* Sets the aspect ration that the selected subimage should have. The way to
* select it, is specifying an example valid @p width and @p height.
* @see setFreeSelectionAspectRatio()
*/
void setSelectionAspectRatio(int width, int height);
/**
* Allows the user to do a selection which has any aspect ratio. This is
* the default.
* @see setSelectionAspectRatio()
*/
void setFreeSelectionAspectRatio();
/**
* Sets the maximum size for the widget. If the image is larger than this
* (either horizontally or vertically), it's scaled to adjust to the maximum
* size (preserving the aspect ratio)
*/
void setMaximumWidgetSize( int width, int height );
/**
* Rotates the image as specified by the @p direction parameter, also tries
* to rotate the selected region so that it doesn't change, as long as the
* forced aspect ratio setting is respected, in other case, the selected region
* is resetted.
*/
void rotate(KImageEffect::RotateDirection direction);
public slots:
/**
* Rotates the current image 90º clockwise
*/
void rotateClockwise();
/**
* Rotates the current image 90º counterclockwise
*/
void rotateCounterclockwise();
protected:
/**
* Creates a KPopupMenu with the menu that appears when clicking with the right button on the label
*/
virtual KPopupMenu *createPopupMenu();
private:
bool eventFilter(TQObject *obj, TQEvent *ev);
/**
* Recalculates the pixmap that is shown based on the current selected area,
* the original image, etc.
*/
void updatePixmap();
TQRect calcSelectionRectangle( const TQPoint &startPoint, const TQPoint & endPoint );
enum CursorState { None=0, Resizing, Moving };
CursorState m_state;
TQPixmap m_unzoomedPixmap;
TQPixmap m_originalPixmap;
TQPixmap m_linedPixmap;
TQRect m_selectedRegion;
TQLabel *m_label;
TQPoint m_tempFirstClick;
double m_forcedAspectRatio;
int m_maxWidth, m_maxHeight;
double m_zoomFactor;
};
#endif
|
