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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#include <vcl/bitmapaccess.hxx>
#include <basegfx/color/bcolortools.hxx>
#include "BitmapProcessor.hxx"
BitmapEx BitmapProcessor::createLightImage(const BitmapEx& rBitmapEx)
{
const Size aSize(rBitmapEx.GetSizePixel());
Bitmap aBitmap(rBitmapEx.GetBitmap());
Bitmap aDarkBitmap(aSize, 24);
Bitmap::ScopedReadAccess pRead(aBitmap);
Bitmap::ScopedWriteAccess pWrite(aDarkBitmap);
if (pRead && pWrite)
{
for (long nY = 0; nY < aSize.Height(); ++nY)
{
for (long nX = 0; nX < aSize.Width(); ++nX)
{
BitmapColor aColor = pRead->HasPalette() ?
pRead->GetPaletteColor(pRead->GetPixelIndex(nY, nX)) :
pRead->GetPixel(nY, nX);
basegfx::BColor aBColor(Color(aColor.Invert()).getBColor());
aBColor = basegfx::tools::rgb2hsl(aBColor);
double fHue = aBColor.getRed();
fHue += 180.0;
while (fHue > 360.0)
fHue -= 360.0;
aBColor.setRed(fHue);
aBColor = basegfx::tools::hsl2rgb(aBColor);
aColor.SetRed((aBColor.getRed() * 255.0) + 0.5);
aColor.SetGreen((aBColor.getGreen() * 255.0) + 0.5);
aColor.SetBlue((aBColor.getBlue() * 255.0) + 0.5);
pWrite->SetPixel(nY, nX, aColor);
}
}
}
pWrite.reset();
pRead.reset();
return BitmapEx(aDarkBitmap, rBitmapEx.GetAlpha());
}
BitmapEx BitmapProcessor::createDisabledImage(const BitmapEx& rBitmapEx)
{
const Size aSize(rBitmapEx.GetSizePixel());
//keep disable image at same depth as original where possible, otherwise
//use 8 bit
sal_uInt16 nBitCount = rBitmapEx.GetBitCount();
if (nBitCount < 8)
nBitCount = 8;
const BitmapPalette* pPal = nBitCount == 8 ? &Bitmap::GetGreyPalette(256) : nullptr;
Bitmap aGrey(aSize, nBitCount, pPal);
AlphaMask aGreyAlpha(aSize);
Bitmap aBitmap(rBitmapEx.GetBitmap());
Bitmap::ScopedReadAccess pRead(aBitmap);
Bitmap::ScopedWriteAccess pGrey(aGrey);
AlphaMask::ScopedWriteAccess pGreyAlpha(aGreyAlpha);
BitmapEx aReturnBitmap;
if (rBitmapEx.IsTransparent())
{
AlphaMask aBitmapAlpha(rBitmapEx.GetAlpha());
AlphaMask::ScopedReadAccess pReadAlpha(aBitmapAlpha);
if (pRead && pReadAlpha && pGrey && pGreyAlpha)
{
BitmapColor aGreyAlphaValue(0);
for (long nY = 0; nY < aSize.Height(); ++nY)
{
for (long nX = 0; nX < aSize.Width(); ++nX)
{
const sal_uInt8 nLum(pRead->GetLuminance(nY, nX));
BitmapColor aGreyValue(nLum, nLum, nLum);
pGrey->SetPixel(nY, nX, aGreyValue);
const BitmapColor aBitmapAlphaValue(pReadAlpha->GetPixel(nY, nX));
aGreyAlphaValue.SetIndex(sal_uInt8(std::min(aBitmapAlphaValue.GetIndex() + 178ul, 255ul)));
pGreyAlpha->SetPixel(nY, nX, aGreyAlphaValue);
}
}
}
pReadAlpha.reset();
aReturnBitmap = BitmapEx(aGrey, aGreyAlpha);
}
else
{
if (pRead && pGrey && pGreyAlpha)
{
BitmapColor aGreyAlphaValue(0);
for (long nY = 0; nY < aSize.Height(); ++nY)
{
for (long nX = 0; nX < aSize.Width(); ++nX)
{
const sal_uInt8 nLum(pRead->GetLuminance(nY, nX));
BitmapColor aGreyValue(nLum, nLum, nLum);
pGrey->SetPixel(nY, nX, aGreyValue);
aGreyAlphaValue.SetIndex(128);
pGreyAlpha->SetPixel(nY, nX, aGreyAlphaValue);
}
}
}
aReturnBitmap = BitmapEx(aGrey);
}
pRead.reset();
pGrey.reset();
pGreyAlpha.reset();
return aReturnBitmap;
}
void BitmapProcessor::colorizeImage(BitmapEx& rBitmapEx, Color aColor)
{
Bitmap aBitmap = rBitmapEx.GetBitmap();
Bitmap::ScopedWriteAccess pWriteAccess(aBitmap);
if (pWriteAccess)
{
BitmapColor aBitmapColor;
const long nW = pWriteAccess->Width();
const long nH = pWriteAccess->Height();
std::vector<sal_uInt8> aMapR(256);
std::vector<sal_uInt8> aMapG(256);
std::vector<sal_uInt8> aMapB(256);
long nX;
long nY;
const sal_uInt8 cR = aColor.GetRed();
const sal_uInt8 cG = aColor.GetGreen();
const sal_uInt8 cB = aColor.GetBlue();
for (nX = 0; nX < 256; ++nX)
{
aMapR[nX] = MinMax((nX + cR) / 2, 0, 255);
aMapG[nX] = MinMax((nX + cG) / 2, 0, 255);
aMapB[nX] = MinMax((nX + cB) / 2, 0, 255);
}
if (pWriteAccess->HasPalette())
{
for (sal_uInt16 i = 0, nCount = pWriteAccess->GetPaletteEntryCount(); i < nCount; i++)
{
const BitmapColor& rCol = pWriteAccess->GetPaletteColor(i);
aBitmapColor.SetRed(aMapR[rCol.GetRed()]);
aBitmapColor.SetGreen(aMapG[rCol.GetGreen()]);
aBitmapColor.SetBlue(aMapB[rCol.GetBlue()]);
pWriteAccess->SetPaletteColor(i, aBitmapColor);
}
}
else if (pWriteAccess->GetScanlineFormat() == ScanlineFormat::N24BitTcBgr)
{
for (nY = 0; nY < nH; ++nY)
{
Scanline pScan = pWriteAccess->GetScanline(nY);
for (nX = 0; nX < nW; ++nX)
{
*pScan = aMapB[*pScan]; pScan++;
*pScan = aMapG[*pScan]; pScan++;
*pScan = aMapR[*pScan]; pScan++;
}
}
}
else
{
for (nY = 0; nY < nH; ++nY)
{
for (nX = 0; nX < nW; ++nX)
{
aBitmapColor = pWriteAccess->GetPixel(nY, nX);
aBitmapColor.SetRed(aMapR[aBitmapColor.GetRed()]);
aBitmapColor.SetGreen(aMapG[aBitmapColor.GetGreen()]);
aBitmapColor.SetBlue(aMapB[aBitmapColor.GetBlue()]);
pWriteAccess->SetPixel(nY, nX, aBitmapColor);
}
}
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
