LibreOffice Module canvas (master) 1
dx_bitmap.cxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
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14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#include <sal/config.h>
21
22#include <memory>
23
26#include <tools/diagnose_ex.h>
27
28#include "dx_bitmap.hxx"
30#include "dx_impltools.hxx"
31
32using namespace ::com::sun::star;
33
34namespace dxcanvas
35{
36
37 // DXBitmap::DXBitmap
38
39
41 bool bWithAlpha ) :
42 mpGdiPlusUser( GDIPlusUser::createInstance() ),
43 maSize(rBitmap->GetWidth(),rBitmap->GetHeight()),
44 mpBitmap(rBitmap),
46 mbAlpha(bWithAlpha)
47 {
48 }
49
50 DXBitmap::DXBitmap( const ::basegfx::B2IVector& rSize,
51 bool bWithAlpha ) :
52 mpGdiPlusUser( GDIPlusUser::createInstance() ),
53 maSize(rSize),
54 mpBitmap(),
55 mpGraphics(),
56 mbAlpha(bWithAlpha)
57 {
58 // create container for pixel data
59 if(mbAlpha)
60 {
61 mpBitmap = std::make_shared<Gdiplus::Bitmap>(
62 maSize.getX(),
63 maSize.getY(),
64 PixelFormat32bppARGB);
65 }
66 else
67 {
68 mpBitmap = std::make_shared<Gdiplus::Bitmap>(
69 maSize.getX(),
70 maSize.getY(),
71 PixelFormat24bppRGB);
72 }
73
75 }
76
78 {
79 return mpBitmap;
80 }
81
83 {
84 return mpGraphics;
85 }
86
88 {
89 return maSize;
90 }
91
92 bool DXBitmap::hasAlpha() const
93 {
94 return mbAlpha;
95 }
96
97 uno::Sequence< sal_Int8 > DXBitmap::getData( rendering::IntegerBitmapLayout& /*bitmapLayout*/,
98 const geometry::IntegerRectangle2D& rect )
99 {
100 uno::Sequence< sal_Int8 > aRes( (rect.X2-rect.X1)*(rect.Y2-rect.Y1)*4 ); // TODO(F1): Be format-agnostic here
101
102 const Gdiplus::Rect aRect( tools::gdiPlusRectFromIntegerRectangle2D( rect ) );
103
104 Gdiplus::BitmapData aBmpData;
105 aBmpData.Width = rect.X2-rect.X1;
106 aBmpData.Height = rect.Y2-rect.Y1;
107 aBmpData.Stride = 4*aBmpData.Width;
108 aBmpData.PixelFormat = PixelFormat32bppARGB;
109 aBmpData.Scan0 = aRes.getArray();
110
111 // TODO(F1): Support more pixel formats natively
112
113 // read data from bitmap
114 if( Gdiplus::Ok != mpBitmap->LockBits( &aRect,
115 Gdiplus::ImageLockModeRead | Gdiplus::ImageLockModeUserInputBuf,
116 PixelFormat32bppARGB, // TODO(F1): Adapt to
117 // Graphics native
118 // format/change
119 // getMemoryLayout
120 &aBmpData ) )
121 {
122 // failed to lock, bail out
123 return uno::Sequence< sal_Int8 >();
124 }
125
126 mpBitmap->UnlockBits( &aBmpData );
127
128 return aRes;
129 }
130
131 void DXBitmap::setData( const uno::Sequence< sal_Int8 >& data,
132 const rendering::IntegerBitmapLayout& /*bitmapLayout*/,
133 const geometry::IntegerRectangle2D& rect )
134 {
135 const Gdiplus::Rect aRect( tools::gdiPlusRectFromIntegerRectangle2D( rect ) );
136
137 Gdiplus::BitmapData aBmpData;
138 aBmpData.Width = rect.X2-rect.X1;
139 aBmpData.Height = rect.Y2-rect.Y1;
140 aBmpData.Stride = 4*aBmpData.Width;
141 aBmpData.PixelFormat = PixelFormat32bppARGB;
142 aBmpData.Scan0 = const_cast<sal_Int8 *>(data.getConstArray());
143 // const_cast is safe, "Gdiplus::ImageLockModeWrite
144 // | Gdiplus::ImageLockModeUserInputBuf makes the data go from
145 // BitmapData into Bitmap", says Thorsten
146
147 // TODO(F1): Support more pixel formats natively
148
149 if( Gdiplus::Ok != mpBitmap->LockBits( &aRect,
150 Gdiplus::ImageLockModeWrite | Gdiplus::ImageLockModeUserInputBuf,
151 PixelFormat32bppARGB, // TODO: Adapt to
152 // Graphics native
153 // format/change
154 // getMemoryLayout
155 &aBmpData ) )
156 {
157 throw uno::RuntimeException();
158 }
159
160 // commit data to bitmap
161 mpBitmap->UnlockBits( &aBmpData );
162 }
163
164 void DXBitmap::setPixel( const uno::Sequence< sal_Int8 >& color,
165 const rendering::IntegerBitmapLayout& /*bitmapLayout*/,
166 const geometry::IntegerPoint2D& pos )
167 {
168 const geometry::IntegerSize2D aSize( maSize.getX(),maSize.getY() );
169
170 ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aSize.Width,
171 "CanvasHelper::setPixel: X coordinate out of bounds" );
172 ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aSize.Height,
173 "CanvasHelper::setPixel: Y coordinate out of bounds" );
174 ENSURE_ARG_OR_THROW( color.getLength() > 3,
175 "CanvasHelper::setPixel: not enough color components" );
176
177 if( Gdiplus::Ok != mpBitmap->SetPixel( pos.X, pos.Y,
178 Gdiplus::Color( tools::sequenceToArgb( color ))))
179 {
180 throw uno::RuntimeException();
181 }
182 }
183
184 uno::Sequence< sal_Int8 > DXBitmap::getPixel( rendering::IntegerBitmapLayout& /*bitmapLayout*/,
185 const geometry::IntegerPoint2D& pos )
186 {
187 const geometry::IntegerSize2D aSize( maSize.getX(),maSize.getY() );
188
189 ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aSize.Width,
190 "CanvasHelper::getPixel: X coordinate out of bounds" );
191 ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aSize.Height,
192 "CanvasHelper::getPixel: Y coordinate out of bounds" );
193
194 Gdiplus::Color aColor;
195
196 if( Gdiplus::Ok != mpBitmap->GetPixel( pos.X, pos.Y, &aColor ) )
197 return uno::Sequence< sal_Int8 >();
198
199 return tools::argbToIntSequence(aColor.GetValue());
200 }
201
202}
203
204/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
FPDF_BITMAP mpBitmap
HRESULT createInstance(REFIID iid, Ifc **ppIfc)
TYPE getX() const
TYPE getY() const
css::uno::Sequence< sal_Int8 > getPixel(css::rendering::IntegerBitmapLayout &bitmapLayout, const css::geometry::IntegerPoint2D &pos) override
Definition: dx_bitmap.cxx:184
BitmapSharedPtr mpBitmap
Definition: dx_bitmap.hxx:74
void setPixel(const css::uno::Sequence< sal_Int8 > &color, const css::rendering::IntegerBitmapLayout &bitmapLayout, const css::geometry::IntegerPoint2D &pos) override
Definition: dx_bitmap.cxx:164
::basegfx::B2IVector maSize
Definition: dx_bitmap.hxx:72
virtual GraphicsSharedPtr getGraphics() override
Definition: dx_bitmap.cxx:82
void setData(const css::uno::Sequence< sal_Int8 > &data, const css::rendering::IntegerBitmapLayout &bitmapLayout, const css::geometry::IntegerRectangle2D &rect) override
Definition: dx_bitmap.cxx:131
virtual bool hasAlpha() const override
Definition: dx_bitmap.cxx:92
GraphicsSharedPtr mpGraphics
Definition: dx_bitmap.hxx:75
css::uno::Sequence< sal_Int8 > getData(css::rendering::IntegerBitmapLayout &bitmapLayout, const css::geometry::IntegerRectangle2D &rect) override
Definition: dx_bitmap.cxx:97
virtual ::basegfx::B2IVector getSize() const override
Definition: dx_bitmap.cxx:87
DXBitmap(const BitmapSharedPtr &rBitmap, bool bWithAlpha)
Definition: dx_bitmap.cxx:40
virtual BitmapSharedPtr getBitmap() const override
Definition: dx_bitmap.cxx:77
#define ENSURE_ARG_OR_THROW(c, m)
::basegfx::B2IVector maSize
Definition: dx_9rm.cxx:116
GraphicsSharedPtr mpGraphics
Definition: dx_canvas.cxx:59
Gdiplus::BitmapData aBmpData
GraphicsSharedPtr createGraphicsFromBitmap(const BitmapSharedPtr &rBitmap)
Gdiplus::Rect gdiPlusRectFromIntegerRectangle2D(const geometry::IntegerRectangle2D &rRect)
uno::Sequence< sal_Int8 > argbToIntSequence(Gdiplus::ARGB rColor)
Gdiplus::ARGB sequenceToArgb(const uno::Sequence< sal_Int8 > &rColor)
std::shared_ptr< Gdiplus::Graphics > GraphicsSharedPtr
Definition: dx_winstuff.hxx:58
std::shared_ptr< Gdiplus::Bitmap > BitmapSharedPtr
Definition: dx_winstuff.hxx:60
signed char sal_Int8
size_t pos