QGIS API Documentation  3.8.0-Zanzibar (11aff65)
qgswmsgetprint.cpp
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1 /***************************************************************************
2  qgswmsgetprint.h
3  -------------------------
4  begin : December 20 , 2016
5  copyright : (C) 2007 by Marco Hugentobler (original code)
6  (C) 2014 by Alessandro Pasotti (original code)
7  (C) 2016 by David Marteau
8  email : marco dot hugentobler at karto dot baug dot ethz dot ch
9  a dot pasotti at itopen dot it
10  david dot marteau at 3liz dot com
11  ***************************************************************************/
12 
13 /***************************************************************************
14  * *
15  * This program is free software; you can redistribute it and/or modify *
16  * it under the terms of the GNU General Public License as published by *
17  * the Free Software Foundation; either version 2 of the License, or *
18  * (at your option) any later version. *
19  * *
20  ***************************************************************************/
21 #include "qgswmsutils.h"
22 #include "qgswmsgetprint.h"
23 #include "qgswmsrenderer.h"
24 #include "qgswmsserviceexception.h"
25 
26 namespace QgsWms
27 {
28  void writeGetPrint( QgsServerInterface *serverIface, const QgsProject *project,
29  const QString &, const QgsServerRequest &request,
30  QgsServerResponse &response )
31  {
32  // get wms parameters from query
33  const QgsWmsParameters parameters( QUrlQuery( request.url() ) );
34 
35  // GetPrint supports svg/png/pdf
36  const QgsWmsParameters::Format format = parameters.format();
37  QString contentType;
38  switch ( format )
39  {
41  contentType = QStringLiteral( "image/png" );
42  break;
44  contentType = QStringLiteral( "image/jpeg" );
45  break;
47  contentType = QStringLiteral( "image/svg+xml" );
48  break;
50  contentType = QStringLiteral( "application/pdf" );
51  break;
52  default:
54  parameters[QgsWmsParameter::FORMAT] );
55  break;
56  }
57 
58  // prepare render context
59  QgsWmsRenderContext context( project, serverIface );
67  context.setParameters( parameters );
68 
69  // rendering
70  QgsRenderer renderer( context );
71  response.setHeader( QStringLiteral( "Content-Type" ), contentType );
72  response.write( renderer.getPrint() );
73  }
74 } // namespace QgsWms
virtual void setHeader(const QString &key, const QString &value)=0
Set Header entry Add Header entry to the response Note that it is usually an error to set Header afte...
QByteArray getPrint()
Returns printed page as binary.
Format
Output format for the response.
Exception thrown in case of malformed request.
virtual void write(const QString &data)
Write string This is a convenient method that will write directly to the underlying I/O device...
void setFlag(Flag flag, bool on=true)
Sets or unsets a rendering flag according to the on value.
void setParameters(const QgsWmsParameters &parameters)
Sets WMS parameters.
Provides an interface to retrieve and manipulate WMS parameters received from the client...
Reads and writes project states.
Definition: qgsproject.h:89
Format format() const
Returns format.
void writeGetPrint(QgsServerInterface *serverIface, const QgsProject *project, const QString &, const QgsServerRequest &request, QgsServerResponse &response)
Output GetPrint response.
Median cut implementation.
QgsServerRequest Class defining request interface passed to services QgsService::executeRequest() met...
QgsServerInterface Class defining interfaces exposed by QGIS Server and made available to plugins...
Map renderer for WMS requests.
Rendering context for the WMS renderer.
QgsServerResponse Class defining response interface passed to services QgsService::executeRequest() m...