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
|
/* -*- 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <drawinglayer/tools/converters.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
#include <drawinglayer/processor2d/processor2dtools.hxx>
#include <vcl/virdev.hxx>
#ifdef DBG_UTIL
#include <tools/stream.hxx>
#include <vcl/pngwrite.hxx>
#endif
namespace drawinglayer
{
namespace tools
{
BitmapEx convertToBitmapEx(
const drawinglayer::primitive2d::Primitive2DContainer& rSeq,
const geometry::ViewInformation2D& rViewInformation2D,
sal_uInt32 nDiscreteWidth,
sal_uInt32 nDiscreteHeight,
sal_uInt32 nMaxQuadratPixels)
{
BitmapEx aRetval;
#ifdef DBG_UTIL
static bool bDoSaveForVisualControl(false);
#endif
if(!rSeq.empty() && nDiscreteWidth && nDiscreteHeight)
{
// get destination size in pixels
const MapMode aMapModePixel(MapUnit::MapPixel);
const sal_uInt32 nViewVisibleArea(nDiscreteWidth * nDiscreteHeight);
drawinglayer::primitive2d::Primitive2DContainer aSequence(rSeq);
if(nViewVisibleArea > nMaxQuadratPixels)
{
// reduce render size
double fReduceFactor = sqrt((double)nMaxQuadratPixels / (double)nViewVisibleArea);
nDiscreteWidth = basegfx::fround((double)nDiscreteWidth * fReduceFactor);
nDiscreteHeight = basegfx::fround((double)nDiscreteHeight * fReduceFactor);
const drawinglayer::primitive2d::Primitive2DReference aEmbed(
new drawinglayer::primitive2d::TransformPrimitive2D(
basegfx::tools::createScaleB2DHomMatrix(fReduceFactor, fReduceFactor),
rSeq));
aSequence = drawinglayer::primitive2d::Primitive2DContainer { aEmbed };
}
const Point aEmptyPoint;
const Size aSizePixel(nDiscreteWidth, nDiscreteHeight);
ScopedVclPtrInstance< VirtualDevice > pContent;
// prepare vdev
pContent->SetOutputSizePixel(aSizePixel, false);
pContent->SetMapMode(aMapModePixel);
// set to all white
pContent->SetBackground(Wallpaper(Color(COL_WHITE)));
pContent->Erase();
// create pixel processor, also already takes care of AAing and
// checking the getOptionsDrawinglayer().IsAntiAliasing() switch. If
// not wanted, change after this call as needed
processor2d::BaseProcessor2D* pContentProcessor = processor2d::createPixelProcessor2DFromOutputDevice(
*pContent.get(),
rViewInformation2D);
if(pContentProcessor)
{
// render content
pContentProcessor->process(aSequence);
// get content
pContent->EnableMapMode(false);
const Bitmap aContent(pContent->GetBitmap(aEmptyPoint, aSizePixel));
#ifdef DBG_UTIL
if(bDoSaveForVisualControl)
{
SvFileStream aNew(OUString("c:\\test_content.png"), StreamMode::WRITE|StreamMode::TRUNC);
vcl::PNGWriter aPNGWriter(aContent);
aPNGWriter.Write(aNew);
}
#endif
// prepare for mask creation
pContent->SetMapMode(aMapModePixel);
// set alpha to all white (fully transparent)
pContent->Erase();
// embed primitives to paint them black
const primitive2d::Primitive2DReference xRef(
new primitive2d::ModifiedColorPrimitive2D(
aSequence,
basegfx::BColorModifierSharedPtr(
new basegfx::BColorModifier_replace(
basegfx::BColor(0.0, 0.0, 0.0)))));
const primitive2d::Primitive2DContainer xSeq { xRef };
// render
pContentProcessor->process(xSeq);
delete pContentProcessor;
// get alpha channel from vdev
pContent->EnableMapMode(false);
const Bitmap aAlpha(pContent->GetBitmap(aEmptyPoint, aSizePixel));
#ifdef DBG_UTIL
if(bDoSaveForVisualControl)
{
SvFileStream aNew(OUString("c:\\test_alpha.png"), StreamMode::WRITE|StreamMode::TRUNC);
vcl::PNGWriter aPNGWriter(aAlpha);
aPNGWriter.Write(aNew);
}
#endif
// create BitmapEx result
aRetval = BitmapEx(aContent, AlphaMask(aAlpha));
#ifdef DBG_UTIL
if(bDoSaveForVisualControl)
{
SvFileStream aNew(OUString("c:\\test_combined.png"), StreamMode::WRITE|StreamMode::TRUNC);
vcl::PNGWriter aPNGWriter(aRetval);
aPNGWriter.Write(aNew);
}
#endif
}
}
return aRetval;
}
} // end of namespace tools
} // end of namespace drawinglayer
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
