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
|
/***************************************************************************
* *
* DrawPad - a drawing program for Opie Environment *
* *
* (C) 2002 by S. Prud'homme <prudhomme@laposte.net> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "pointtool.h"
#include "drawpad.h"
#include "drawpadcanvas.h"
#include "page.h"
#include <qimage.h>
PointTool::PointTool(DrawPad* drawPad, DrawPadCanvas* drawPadCanvas)
: Tool(drawPad, drawPadCanvas)
{
m_mousePressed = false;
m_polyline.resize(3);
}
PointTool::~PointTool()
{
}
void PointTool::mousePressEvent(QMouseEvent* e)
{
m_pDrawPadCanvas->backupPage();
m_mousePressed = true;
m_polyline[2] = m_polyline[1] = m_polyline[0] = e->pos();
}
void PointTool::mouseReleaseEvent(QMouseEvent* e)
{
Q_UNUSED(e)
m_mousePressed = false;
}
void PointTool::mouseMoveEvent(QMouseEvent* e)
{
if (m_mousePressed) {
m_polyline[2] = m_polyline[1];
m_polyline[1] = m_polyline[0];
m_polyline[0] = e->pos();
QRect r = m_polyline.boundingRect();
r = r.normalize();
r.setLeft(r.left() - m_pDrawPad->pen().width());
r.setTop(r.top() - m_pDrawPad->pen().width());
r.setRight(r.right() + m_pDrawPad->pen().width());
r.setBottom(r.bottom() + m_pDrawPad->pen().width());
QPainter painter;
painter.begin(m_pDrawPadCanvas->currentPage()->pixmap());
if (m_pDrawPad->antiAliasing()) {
QPixmap areaPixmap(r.width(), r.height());
bitBlt(&areaPixmap, QPoint(0, 0), painter.device(), r);
QImage areaImage = areaPixmap.convertToImage();
QImage bigAreaImage = areaImage.smoothScale(areaImage.width() * 3, areaImage.height() * 3);
QPixmap bigAreaPixmap;
bigAreaPixmap.convertFromImage(bigAreaImage);
QPen bigAreaPen = m_pDrawPad->pen();
bigAreaPen.setWidth(bigAreaPen.width() * 3);
QPainter bigAreaPainter;
bigAreaPainter.begin(&bigAreaPixmap);
bigAreaPainter.setPen(bigAreaPen);
QPointArray bigAreaPolyline(3);
bigAreaPolyline.setPoint(0, (m_polyline[0].x() - r.x()) * 3 + 1, (m_polyline[0].y() - r.y()) * 3 + 1);
bigAreaPolyline.setPoint(1, (m_polyline[1].x() - r.x()) * 3 + 1, (m_polyline[1].y() - r.y()) * 3 + 1);
bigAreaPolyline.setPoint(2, (m_polyline[2].x() - r.x()) * 3 + 1, (m_polyline[2].y() - r.y()) * 3 + 1);
bigAreaPainter.drawPolyline(bigAreaPolyline);
bigAreaPainter.end();
bigAreaImage = bigAreaPixmap.convertToImage();
areaImage = bigAreaImage.smoothScale(bigAreaImage.width() / 3, bigAreaImage.height() / 3);
areaPixmap.convertFromImage(areaImage);
painter.drawPixmap(r.x(), r.y(), areaPixmap);
} else {
painter.setPen(m_pDrawPad->pen());
painter.drawPolyline(m_polyline);
}
painter.end();
QRect viewportRect(m_pDrawPadCanvas->contentsToViewport(r.topLeft()),
m_pDrawPadCanvas->contentsToViewport(r.bottomRight()));
bitBlt(m_pDrawPadCanvas->viewport(), viewportRect.x(), viewportRect.y(),
m_pDrawPadCanvas->currentPage()->pixmap(), r.x(), r.y(), r.width(), r.height());
m_pDrawPadCanvas->viewport()->update(viewportRect);
}
}
|
