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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* -*- 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 "SlideRenderer.hxx"
#include "facreg.hxx"
#include "sdpage.hxx"
#include <toolkit/helper/vclunohelper.hxx>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>
#include <osl/mutex.hxx>
#include <vcl/svapp.hxx>
#include <cppcanvas/vclfactory.hxx>
#include <cppuhelper/supportsservice.hxx>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
namespace sd { namespace presenter {
//===== SlideRenderer ==========================================================
SlideRenderer::SlideRenderer (const Reference<XComponentContext>& rxContext)
: SlideRendererInterfaceBase(m_aMutex),
maPreviewRenderer()
{
(void)rxContext;
}
SlideRenderer::~SlideRenderer (void)
{
}
void SAL_CALL SlideRenderer::disposing (void)
{
}
//----- XInitialization -------------------------------------------------------
void SAL_CALL SlideRenderer::initialize (const Sequence<Any>& rArguments)
throw (Exception, RuntimeException, std::exception)
{
ThrowIfDisposed();
if (rArguments.getLength() != 0)
{
throw RuntimeException("SlideRenderer: invalid number of arguments",
static_cast<XWeak*>(this));
}
}
OUString SlideRenderer::getImplementationName()
throw (css::uno::RuntimeException, std::exception)
{
return OUString("com.sun.star.comp.Draw.SlideRenderer");
}
sal_Bool SlideRenderer::supportsService(OUString const & ServiceName)
throw (css::uno::RuntimeException, std::exception)
{
return cppu::supportsService(this, ServiceName);
}
css::uno::Sequence<OUString> SlideRenderer::getSupportedServiceNames()
throw (css::uno::RuntimeException, std::exception)
{
return css::uno::Sequence<OUString>{"com.sun.star.drawing.SlideRenderer"};
}
//----- XSlideRenderer --------------------------------------------------------
Reference<awt::XBitmap> SlideRenderer::createPreview (
const Reference<drawing::XDrawPage>& rxSlide,
const awt::Size& rMaximalSize,
sal_Int16 nSuperSampleFactor)
throw (css::uno::RuntimeException, std::exception)
{
ThrowIfDisposed();
SolarMutexGuard aGuard;
return VCLUnoHelper::CreateBitmap(
CreatePreview(rxSlide, rMaximalSize, nSuperSampleFactor));
}
Reference<rendering::XBitmap> SlideRenderer::createPreviewForCanvas (
const Reference<drawing::XDrawPage>& rxSlide,
const awt::Size& rMaximalSize,
sal_Int16 nSuperSampleFactor,
const Reference<rendering::XCanvas>& rxCanvas)
throw (css::uno::RuntimeException, std::exception)
{
ThrowIfDisposed();
SolarMutexGuard aGuard;
cppcanvas::CanvasSharedPtr pCanvas (
cppcanvas::VCLFactory::createCanvas(rxCanvas));
if (pCanvas.get() != NULL)
return cppcanvas::VCLFactory::createBitmap(
pCanvas,
CreatePreview(rxSlide, rMaximalSize, nSuperSampleFactor))->getUNOBitmap();
else
return NULL;
}
awt::Size SAL_CALL SlideRenderer::calculatePreviewSize (
double nSlideAspectRatio,
const awt::Size& rMaximalSize)
throw (css::uno::RuntimeException, std::exception)
{
if (rMaximalSize.Width <= 0
|| rMaximalSize.Height <= 0
|| nSlideAspectRatio <= 0)
{
return awt::Size(0,0);
}
const double nWindowAspectRatio (double(rMaximalSize.Width) / double(rMaximalSize.Height));
if (nSlideAspectRatio < nWindowAspectRatio)
return awt::Size(
sal::static_int_cast<sal_Int32>(rMaximalSize.Height * nSlideAspectRatio),
rMaximalSize.Height);
else
return awt::Size(
rMaximalSize.Width,
sal::static_int_cast<sal_Int32>(rMaximalSize.Width / nSlideAspectRatio));
}
BitmapEx SlideRenderer::CreatePreview (
const Reference<drawing::XDrawPage>& rxSlide,
const awt::Size& rMaximalSize,
sal_Int16 nSuperSampleFactor)
throw (css::uno::RuntimeException,
std::exception)
{
const SdPage* pPage = SdPage::getImplementation(rxSlide);
if (pPage == NULL)
throw lang::IllegalArgumentException("SlideRenderer::createPreview() called with invalid slide",
static_cast<XWeak*>(this),
0);
// Determine the size of the current slide and its aspect ratio.
Size aPageSize = pPage->GetSize();
if (aPageSize.Height() <= 0)
throw lang::IllegalArgumentException("SlideRenderer::createPreview() called with invalid size",
static_cast<XWeak*>(this),
1);
// Compare with the aspect ratio of the window (which rMaximalSize
// assumed to be) and calculate the size of the preview so that it
// a) will have the aspect ratio of the page and
// b) will be as large as possible.
awt::Size aPreviewSize (calculatePreviewSize(
double(aPageSize.Width()) / double(aPageSize.Height()),
rMaximalSize));
if (aPreviewSize.Width <= 0 || aPreviewSize.Height <= 0)
return BitmapEx();
// Make sure that the super sample factor has a sane value.
sal_Int16 nFactor (nSuperSampleFactor);
if (nFactor < 1)
nFactor = 1;
else if (nFactor > 10)
nFactor = 10;
// Create the preview. When the super sample factor n is greater than 1
// then a preview is created in size (n*width, n*height) and then scaled
// down to (width, height). This is a poor mans antialiasing for the
// time being. When we have true antialiasing support this workaround
// can be removed.
const Image aPreview = maPreviewRenderer.RenderPage (
pPage,
Size(aPreviewSize.Width*nFactor, aPreviewSize.Height*nFactor),
OUString());
if (nFactor == 1)
return aPreview.GetBitmapEx();
else
{
BitmapEx aScaledPreview = aPreview.GetBitmapEx();
aScaledPreview.Scale(
Size(aPreviewSize.Width,aPreviewSize.Height),
BMP_SCALE_BESTQUALITY);
return aScaledPreview;
}
}
void SlideRenderer::ThrowIfDisposed (void)
throw (::com::sun::star::lang::DisposedException)
{
if (SlideRendererInterfaceBase::rBHelper.bDisposed || SlideRendererInterfaceBase::rBHelper.bInDispose)
{
throw lang::DisposedException ("SlideRenderer object has already been disposed",
static_cast<uno::XWeak*>(this));
}
}
} } // end of namespace ::sd::presenter
extern "C" SAL_DLLPUBLIC_EXPORT ::com::sun::star::uno::XInterface* SAL_CALL
com_sun_star_comp_Draw_SlideRenderer_get_implementation(::com::sun::star::uno::XComponentContext* context,
::com::sun::star::uno::Sequence<css::uno::Any> const &)
{
return cppu::acquire(new sd::presenter::SlideRenderer(context));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
