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
|
/*
* ===========================
* VDK Visual Develeopment Kit
* Version 2.0.0
* november 2000
* ===========================
*
* Copyright (C) 1998, Mario Motta
* Developed by Mario Motta <mmotta@guest.net>
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _canvascompo_h
#define _canvascompo_h
#include <vdk/vdk.h>
#define MAX_SHAPES 10
typedef VDKValueList<VDKPoint> PointList;
typedef VDKValueListIterator<VDKPoint> PointListIterator;
/*
*/
class CanvasShape;
class CanvasComponent : public VDKBox
{
VDKCanvas *canvas;
VDKLabel *label;
VDKCustomButton *mlButton;
VDKCustomButton *clearButton;
CanvasShape* shape_array[MAX_SHAPES];
PointList plist;
public:
CanvasComponent(VDKForm* owner): VDKBox(owner){}
~CanvasComponent();
void Setup();
bool OnMotion(VDKObject* sender, GdkEvent* event);
bool OnExpose(VDKObject*, GdkEvent* event);
bool Clear(VDKObject*);
bool OnButtonPress(VDKObject*, GdkEvent* ev);
bool OnButtonRelease(VDKObject*, GdkEvent* ev);
DECLARE_SIGNAL_MAP(CanvasComponent);
DECLARE_EVENT_LIST(CanvasComponent);
};
/*
some shapes
*/
class CanvasShape
{
protected:
VDKCanvas* canvas;
VDKRgb color;
bool filled;
public:
VDKRect bound;
CanvasShape(VDKCanvas* owner,
int x, int y, int w, int h,
VDKRgb color, bool filled = false):
canvas(owner),color(color),filled(filled),bound(x,y,w,h) {}
virtual ~CanvasShape() {}
virtual void Draw() = 0;
};
class
CanvasRectangle: public CanvasShape
{
public:
CanvasRectangle(VDKCanvas* owner,
int x, int y, int w, int h,
VDKRgb color,
bool filled = false):
CanvasShape(owner,x,y,w,h,color,filled) {}
virtual ~CanvasRectangle() {}
void Draw()
{
canvas->Foreground = color;
canvas->DrawRect(filled,bound.Origin().x,
bound.Origin().y,
bound.w,bound.h);
}
};
/*
Arc constructor is probably one that needs more
explanation becaues it has quite a few parameters:
x,y origin of arc bounding rect
w,h width and height of arc bounding rect
start_angle,end_angle are a bit more complicated to explain
since unlike most arc function aren't expressed in radians
or degrees. The angles should be converted into degrees and
multiplied by 64 (which is done by the Draw() method itself).
So pass start_angle and end_angle in degrees with angle 0 at
12 o'clock and counting clockwise.
*/
class
CanvasArc: public CanvasShape
{
private:
int start_angle, end_angle;
public:
CanvasArc(VDKCanvas* owner,
int x, int y, int w, int h,
int start_angle, int end_angle,
VDKRgb color,
bool filled = false):
CanvasShape(owner,x,y,w,h,color,filled),
start_angle(start_angle),end_angle(end_angle) {}
virtual ~CanvasArc() {}
virtual void Draw()
{
canvas->Foreground = color;
canvas->DrawArc(filled,
bound.Origin().x,
bound.Origin().y,
bound.w,bound.h,
start_angle*64,end_angle*64);
}
};
class
CanvasCircle: public CanvasArc
{
public:
CanvasCircle(VDKCanvas* owner,
int x,int y,
int radius,
VDKRgb color,
bool filled = false):
CanvasArc(owner,x-radius,y-radius,radius*2,radius*2,
0,360*64,color,filled) {}
~CanvasCircle() {}
};
class
CanvasPixmap: public CanvasShape
{
private:
char pixfile[256];
VDKRawPixmap* pixmap;
public:
CanvasPixmap(VDKCanvas* owner, int x, int y, char* pixfile):
CanvasShape(owner,x,y,0,0,VDKRgb(-1,-1,-1))
{
pixmap = new VDKRawPixmap(owner,pixfile);
bound = VDKRect(bound.left,bound.top, pixmap->Width(), pixmap->Height());
}
virtual ~CanvasPixmap(){ pixmap->Destroy(); }
void Draw()
{
canvas->DrawPixmap(bound.Origin().x,bound.Origin().y,pixmap);
}
};
typedef VDKArray<VDKPoint> PointArray;
class
CanvasPolygon: public CanvasShape
{
private:
GdkPoint *points;
int npoints;
public:
CanvasPolygon(VDKCanvas *owner,
PointArray& array,
VDKRgb color,
bool filled = false);
virtual ~CanvasPolygon() { delete[] points; }
void Draw()
{
canvas->Foreground = color;
canvas->DrawPolygon(filled,points,npoints);
}
};
#endif
|
