Diffstat (limited to 'noncore/graphics/drawpad/erasetool.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/graphics/drawpad/erasetool.cpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/noncore/graphics/drawpad/erasetool.cpp b/noncore/graphics/drawpad/erasetool.cpp new file mode 100644 index 0000000..d37c901 --- a/dev/null +++ b/noncore/graphics/drawpad/erasetool.cpp | |||
@@ -0,0 +1,74 @@ | |||
1 | /*************************************************************************** | ||
2 | * * | ||
3 | * DrawPad - a drawing program for Opie Environment * | ||
4 | * * | ||
5 | * (C) 2002 by S. Prud'homme <prudhomme@laposte.net> * | ||
6 | * * | ||
7 | * This program is free software; you can redistribute it and/or modify * | ||
8 | * it under the terms of the GNU General Public License as published by * | ||
9 | * the Free Software Foundation; either version 2 of the License, or * | ||
10 | * (at your option) any later version. * | ||
11 | * * | ||
12 | ***************************************************************************/ | ||
13 | |||
14 | #include "erasetool.h" | ||
15 | |||
16 | #include "drawpad.h" | ||
17 | #include "drawpadcanvas.h" | ||
18 | |||
19 | #include <qpainter.h> | ||
20 | #include <qpixmap.h> | ||
21 | |||
22 | EraseTool::EraseTool(DrawPad* drawPad, DrawPadCanvas* drawPadCanvas) | ||
23 | : Tool(drawPad, drawPadCanvas) | ||
24 | { | ||
25 | m_mousePressed = false; | ||
26 | m_polyline.resize(3); | ||
27 | } | ||
28 | |||
29 | EraseTool::~EraseTool() | ||
30 | { | ||
31 | } | ||
32 | |||
33 | void EraseTool::mousePressEvent(QMouseEvent* e) | ||
34 | { | ||
35 | m_mousePressed = true; | ||
36 | m_polyline[2] = m_polyline[1] = m_polyline[0] = e->pos(); | ||
37 | } | ||
38 | |||
39 | void EraseTool::mouseReleaseEvent(QMouseEvent* e) | ||
40 | { | ||
41 | Q_UNUSED(e) | ||
42 | |||
43 | m_mousePressed = false; | ||
44 | } | ||
45 | |||
46 | void EraseTool::mouseMoveEvent(QMouseEvent* e) | ||
47 | { | ||
48 | if (m_mousePressed) { | ||
49 | QPainter painter; | ||
50 | QPen pen(Qt::white, m_pDrawPad->pen().width()); | ||
51 | painter.begin(m_pDrawPadCanvas->currentPage()); | ||
52 | painter.setPen(pen); | ||
53 | m_polyline[2] = m_polyline[1]; | ||
54 | m_polyline[1] = m_polyline[0]; | ||
55 | m_polyline[0] = e->pos(); | ||
56 | painter.drawPolyline(m_polyline); | ||
57 | painter.end(); | ||
58 | |||
59 | QRect r = m_polyline.boundingRect(); | ||
60 | r = r.normalize(); | ||
61 | r.setLeft(r.left() - m_pDrawPad->pen().width()); | ||
62 | r.setTop(r.top() - m_pDrawPad->pen().width()); | ||
63 | r.setRight(r.right() + m_pDrawPad->pen().width()); | ||
64 | r.setBottom(r.bottom() + m_pDrawPad->pen().width()); | ||
65 | |||
66 | QRect viewportRect(m_pDrawPadCanvas->contentsToViewport(r.topLeft()), | ||
67 | m_pDrawPadCanvas->contentsToViewport(r.bottomRight())); | ||
68 | |||
69 | bitBlt(m_pDrawPadCanvas->viewport(), viewportRect.x(), viewportRect.y(), | ||
70 | m_pDrawPadCanvas->currentPage(), r.x(), r.y(), r.width(), r.height()); | ||
71 | |||
72 | m_pDrawPadCanvas->viewport()->update(viewportRect); | ||
73 | } | ||
74 | } | ||