alephone/aorta/image_ext.cpp

/*
 
 image_ext.cpp: extra functionality for wxImage
 Copyright (C) 2006  Gregory Smith
 
 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.
 
 This program 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 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 
 */

#include "image_ext.h"

void wxImageExt::White()
{
        int NumBytes = GetWidth() * GetHeight() * 3;
        for (int i = 0; i < NumBytes; i++) 
        {
                GetData()[i] = 0xff;
        }
}

void wxImageExt::RemoveAlpha()
{
        wxImageExt image;
        image.Create(GetWidth(), GetHeight());
        memcpy(image.GetData(), GetData(), GetWidth() * GetHeight() * 3);
        
        *this = image;
}

void wxImageExt::MaskToAlpha()
{
        wxImageExt image;
        image.Create(GetWidth(), GetHeight());
        image.InitAlpha();
        image.SetMask(false);
        
        memcpy(image.GetData(), GetData(), GetWidth() * GetHeight() * 3);
        
        for (int x = 0; x < GetWidth(); x++)
        {
                for (int y = 0; y < GetHeight(); y++)
                {
                        if (IsTransparent(x, y))
                        {
                                image.GetAlpha()[x + y * GetWidth()] = 0x00;
                        } 
                        else
                        {
                                image.GetAlpha()[x + y * GetWidth()] = 0xff;
                        }
                }
        }
        
        *this = image;
}

void wxImageExt::PropRescale(int width, int height)
{
        float scale = (float) MAX(width, height) / MAX(GetWidth(), GetHeight());
        Rescale(GetWidth() * scale, GetHeight() * scale);
        Resize(wxSize(width, height), wxPoint((width - GetWidth()) / 2, (height - GetHeight()) / 2));
}

void wxImageExt::FromAlpha(const wxImageExt& source)
{
        Create(source.GetWidth(), source.GetHeight());
        int NumPixels = GetWidth() * GetHeight();
        for (int i = 0; i < NumPixels; i++)
        {
                GetData()[i * 3 + 0] = GetData()[i * 3 + 1] = GetData()[i * 3 + 2] = source.GetAlpha()[i];
        }
}

void wxImageExt::ToAlpha(wxImageExt& dest) const
{
        if (!dest.HasAlpha())
        {
                dest.InitAlpha();
        }
        
        int NumPixels = GetWidth() * GetHeight();
        for (int i = 0; i < NumPixels; i++)
        {
                unsigned int Average = (GetData()[i * 3 + 0] + GetData()[i * 3 + 1] + GetData()[i * 3 + 2]) / 3;
                dest.GetAlpha()[i] = Average & 0xff;
        }
}

void wxImageExt::MakeOpacTypeTwo()
{
        wxImageExt image;
        image.Create(GetWidth(), GetHeight());
        int NumPixels = GetWidth() * GetHeight();
        for (int i = 0; i < NumPixels; i++)
        {
                unsigned int Average = (GetData()[i * 3 + 0] + GetData()[i * 3 + 1] + GetData()[i * 3 + 2]) / 3;
                image.GetData()[i * 3 + 0] = image.GetData()[i * 3 + 1] = image.GetData()[i * 3 + 2] = Average & 0xff;
        }
        
        *this = image;
}

void wxImageExt::MakeOpacTypeThree()
{
        wxImageExt image;
        image.Create(GetWidth(), GetHeight());
        int NumPixels = GetWidth() * GetHeight();
        for (int i = 0; i < NumPixels; i++)
        {
                unsigned char Max = MAX(GetData()[i * 3 + 0], MAX(GetData()[i * 3 + 1], GetData()[i * 3 + 2]));
                image.GetData()[i * 3 + 0] = image.GetData()[i * 3 + 1] = image.GetData()[i * 3 + 2] = Max;
        }
        
        *this = image;
}

1	ghs	1.1	/*
2
3			image_ext.cpp: extra functionality for wxImage
4			Copyright (C) 2006 Gregory Smith
5
6			This program is free software; you can redistribute it and/or
7			modify it under the terms of the GNU General Public License
8			as published by the Free Software Foundation; either version 2
9			of the License, or (at your option) any later version.
10
11			This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15
16			You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19
20			*/
21
22			#include "image_ext.h"
23
24			void wxImageExt::White()
25			{
26			int NumBytes = GetWidth() * GetHeight() * 3;
27			for (int i = 0; i < NumBytes; i++)
28			{
29			GetData()[i] = 0xff;
30			}
31			}
32
33			void wxImageExt::RemoveAlpha()
34			{
35			wxImageExt image;
36			image.Create(GetWidth(), GetHeight());
37			memcpy(image.GetData(), GetData(), GetWidth() * GetHeight() * 3);
38
39			*this = image;
40			}
41
42			void wxImageExt::MaskToAlpha()
43			{
44			wxImageExt image;
45			image.Create(GetWidth(), GetHeight());
46			image.InitAlpha();
47			image.SetMask(false);
48
49			memcpy(image.GetData(), GetData(), GetWidth() * GetHeight() * 3);
50
51			for (int x = 0; x < GetWidth(); x++)
52			{
53			for (int y = 0; y < GetHeight(); y++)
54			{
55			if (IsTransparent(x, y))
56			{
57			image.GetAlpha()[x + y * GetWidth()] = 0x00;
58			}
59			else
60			{
61			image.GetAlpha()[x + y * GetWidth()] = 0xff;
62			}
63			}
64			}
65
66			*this = image;
67			}
68
69			void wxImageExt::PropRescale(int width, int height)
70			{
71			float scale = (float) MAX(width, height) / MAX(GetWidth(), GetHeight());
72			Rescale(GetWidth() * scale, GetHeight() * scale);
73			Resize(wxSize(width, height), wxPoint((width - GetWidth()) / 2, (height - GetHeight()) / 2));
74			}
75
76			void wxImageExt::FromAlpha(const wxImageExt& source)
77			{
78			Create(source.GetWidth(), source.GetHeight());
79			int NumPixels = GetWidth() * GetHeight();
80			for (int i = 0; i < NumPixels; i++)
81			{
82			GetData()[i * 3 + 0] = GetData()[i * 3 + 1] = GetData()[i * 3 + 2] = source.GetAlpha()[i];
83			}
84			}
85
86			void wxImageExt::ToAlpha(wxImageExt& dest) const
87			{
88			if (!dest.HasAlpha())
89			{
90			dest.InitAlpha();
91			}
92
93			int NumPixels = GetWidth() * GetHeight();
94			for (int i = 0; i < NumPixels; i++)
95			{
96			unsigned int Average = (GetData()[i * 3 + 0] + GetData()[i * 3 + 1] + GetData()[i * 3 + 2]) / 3;
97			dest.GetAlpha()[i] = Average & 0xff;
98			}
99			}
100
101			void wxImageExt::MakeOpacTypeTwo()
102			{
103			wxImageExt image;
104			image.Create(GetWidth(), GetHeight());
105			int NumPixels = GetWidth() * GetHeight();
106			for (int i = 0; i < NumPixels; i++)
107			{
108			unsigned int Average = (GetData()[i * 3 + 0] + GetData()[i * 3 + 1] + GetData()[i * 3 + 2]) / 3;
109			image.GetData()[i * 3 + 0] = image.GetData()[i * 3 + 1] = image.GetData()[i * 3 + 2] = Average & 0xff;
110			}
111
112			*this = image;
113			}
114
115			void wxImageExt::MakeOpacTypeThree()
116			{
117			wxImageExt image;
118			image.Create(GetWidth(), GetHeight());
119			int NumPixels = GetWidth() * GetHeight();
120			for (int i = 0; i < NumPixels; i++)
121			{
122			unsigned char Max = MAX(GetData()[i * 3 + 0], MAX(GetData()[i * 3 + 1], GetData()[i * 3 + 2]));
123			image.GetData()[i * 3 + 0] = image.GetData()[i * 3 + 1] = image.GetData()[i * 3 + 2] = Max;
124			}
125
126			*this = image;
127			}
128
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