forked from judero01col/GMap.NET
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathGMapImage.cs
More file actions
135 lines (119 loc) · 3.49 KB
/
Copy pathGMapImage.cs
File metadata and controls
135 lines (119 loc) · 3.49 KB
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
using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using GMap.NET.Internals;
using GMap.NET.MapProviders;
namespace GMap.NET.WindowsForms
{
/// <summary>
/// image abstraction
/// </summary>
public class GMapImage : PureImage
{
public Image Img;
public override void Dispose()
{
if (Img != null)
{
Img.Dispose();
Img = null;
}
if (Data != null)
{
Data.Dispose();
Data = null;
}
}
}
/// <summary>
/// image abstraction proxy
/// </summary>
public class GMapImageProxy : PureImageProxy
{
GMapImageProxy()
{
}
public static void Enable()
{
GMapProvider.TileImageProxy = Instance;
}
public static readonly GMapImageProxy Instance = new GMapImageProxy();
internal ColorMatrix ColorMatrix;
static readonly bool Win7OrLater = Stuff.IsRunningOnWin7OrLater();
public override PureImage FromStream(Stream stream)
{
try
{
var m = Image.FromStream(stream, true, !Win7OrLater);
if (m != null)
{
return new GMapImage {Img = ColorMatrix != null ? ApplyColorMatrix(m, ColorMatrix) : m};
}
}
catch (Exception ex)
{
Debug.WriteLine("FromStream: " + ex);
}
return null;
}
public override bool Save(Stream stream, PureImage image)
{
GMapImage ret = image as GMapImage;
bool ok = true;
if (ret.Img != null)
{
// try png
try
{
ret.Img.Save(stream, ImageFormat.Png);
}
catch
{
// try jpeg
try
{
stream.Seek(0, SeekOrigin.Begin);
ret.Img.Save(stream, ImageFormat.Jpeg);
}
catch
{
ok = false;
}
}
}
else
{
ok = false;
}
return ok;
}
Bitmap ApplyColorMatrix(Image original, ColorMatrix matrix)
{
// create a blank bitmap the same size as original
var newBitmap = new Bitmap(original.Width, original.Height);
using (original) // destroy original
{
// get a graphics object from the new image
using (var g = Graphics.FromImage(newBitmap))
{
// set the color matrix attribute
using (var attributes = new ImageAttributes())
{
attributes.SetColorMatrix(matrix);
g.DrawImage(original,
new Rectangle(0, 0, original.Width, original.Height),
0,
0,
original.Width,
original.Height,
GraphicsUnit.Pixel,
attributes);
}
}
}
return newBitmap;
}
}
}