1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski #ifndef _SV_GRAPHITETEXTSRC_HXX
25*b1cdbd2cSJim Jagielski #define _SV_GRAPHITETEXTSRC_HXX
26*b1cdbd2cSJim Jagielski // Description: Implements the Graphite interfaces IGrTextSource and
27*b1cdbd2cSJim Jagielski // IGrGraphics which provide Graphite with access to the
28*b1cdbd2cSJim Jagielski // app's text storage system and the platform's font and
29*b1cdbd2cSJim Jagielski // graphics systems.
30*b1cdbd2cSJim Jagielski
31*b1cdbd2cSJim Jagielski // We need this to enable namespace support in libgrengine headers.
32*b1cdbd2cSJim Jagielski #define GR_NAMESPACE
33*b1cdbd2cSJim Jagielski
34*b1cdbd2cSJim Jagielski // Standard Library
35*b1cdbd2cSJim Jagielski #include <stdexcept>
36*b1cdbd2cSJim Jagielski // Platform
37*b1cdbd2cSJim Jagielski
38*b1cdbd2cSJim Jagielski #ifndef _SVWIN_H
39*b1cdbd2cSJim Jagielski #include <tools/svwin.h>
40*b1cdbd2cSJim Jagielski #endif
41*b1cdbd2cSJim Jagielski
42*b1cdbd2cSJim Jagielski #include <svsys.h>
43*b1cdbd2cSJim Jagielski #include <salgdi.hxx>
44*b1cdbd2cSJim Jagielski #include <sallayout.hxx>
45*b1cdbd2cSJim Jagielski
46*b1cdbd2cSJim Jagielski // Module
47*b1cdbd2cSJim Jagielski #include "vcl/dllapi.h"
48*b1cdbd2cSJim Jagielski
49*b1cdbd2cSJim Jagielski // Libraries
50*b1cdbd2cSJim Jagielski #include <preextstl.h>
51*b1cdbd2cSJim Jagielski #include <graphite/GrClient.h>
52*b1cdbd2cSJim Jagielski #include <graphite/Font.h>
53*b1cdbd2cSJim Jagielski #include <graphite/ITextSource.h>
54*b1cdbd2cSJim Jagielski #include <postextstl.h>
55*b1cdbd2cSJim Jagielski
56*b1cdbd2cSJim Jagielski // Module type definitions and forward declarations.
57*b1cdbd2cSJim Jagielski //
58*b1cdbd2cSJim Jagielski namespace grutils
59*b1cdbd2cSJim Jagielski {
60*b1cdbd2cSJim Jagielski class GrFeatureParser;
61*b1cdbd2cSJim Jagielski }
62*b1cdbd2cSJim Jagielski // Implements the Adaptor pattern to adapt the LayoutArgs and the ServerFont interfaces to the
63*b1cdbd2cSJim Jagielski // gr::IGrTextSource interface.
64*b1cdbd2cSJim Jagielski // @author tse
65*b1cdbd2cSJim Jagielski //
66*b1cdbd2cSJim Jagielski class TextSourceAdaptor : public gr::ITextSource
67*b1cdbd2cSJim Jagielski {
68*b1cdbd2cSJim Jagielski public:
69*b1cdbd2cSJim Jagielski TextSourceAdaptor(ImplLayoutArgs &layout_args, const int nContextLen) throw();
70*b1cdbd2cSJim Jagielski ~TextSourceAdaptor();
71*b1cdbd2cSJim Jagielski virtual gr::UtfType utfEncodingForm();
72*b1cdbd2cSJim Jagielski virtual size_t getLength();
73*b1cdbd2cSJim Jagielski virtual size_t fetch(gr::toffset ichMin, size_t cch, gr::utf32 * prgchBuffer);
74*b1cdbd2cSJim Jagielski virtual size_t fetch(gr::toffset ichMin, size_t cch, gr::utf16 * prgchwBuffer);
75*b1cdbd2cSJim Jagielski virtual size_t fetch(gr::toffset ichMin, size_t cch, gr::utf8 * prgchsBuffer);
76*b1cdbd2cSJim Jagielski virtual bool getRightToLeft(gr::toffset ich);
77*b1cdbd2cSJim Jagielski virtual unsigned int getDirectionDepth(gr::toffset ich);
78*b1cdbd2cSJim Jagielski virtual float getVerticalOffset(gr::toffset ich);
79*b1cdbd2cSJim Jagielski virtual gr::isocode getLanguage(gr::toffset ich);
80*b1cdbd2cSJim Jagielski
81*b1cdbd2cSJim Jagielski virtual ext_std::pair<gr::toffset, gr::toffset> propertyRange(gr::toffset ich);
82*b1cdbd2cSJim Jagielski virtual size_t getFontFeatures(gr::toffset ich, gr::FeatureSetting * prgfset);
83*b1cdbd2cSJim Jagielski virtual bool sameSegment(gr::toffset ich1, gr::toffset ich2);
featureVariations()84*b1cdbd2cSJim Jagielski virtual bool featureVariations() { return false; }
85*b1cdbd2cSJim Jagielski
86*b1cdbd2cSJim Jagielski operator ImplLayoutArgs & () throw();
87*b1cdbd2cSJim Jagielski void setFeatures(const grutils::GrFeatureParser * pFeatures);
getLayoutArgs() const88*b1cdbd2cSJim Jagielski const ImplLayoutArgs & getLayoutArgs() const { return maLayoutArgs; }
getContextLength() const89*b1cdbd2cSJim Jagielski size_t getContextLength() const { return mnEnd; };
90*b1cdbd2cSJim Jagielski inline void switchLayoutArgs(ImplLayoutArgs & newArgs);
91*b1cdbd2cSJim Jagielski private:
92*b1cdbd2cSJim Jagielski // Prevent the generation of a default assignment operator.
93*b1cdbd2cSJim Jagielski TextSourceAdaptor & operator=(const TextSourceAdaptor &);
94*b1cdbd2cSJim Jagielski
95*b1cdbd2cSJim Jagielski void getCharProperties(const int, int &, int &, size_t &);
96*b1cdbd2cSJim Jagielski
97*b1cdbd2cSJim Jagielski ImplLayoutArgs maLayoutArgs;
98*b1cdbd2cSJim Jagielski size_t mnEnd;
99*b1cdbd2cSJim Jagielski const grutils::GrFeatureParser * mpFeatures;
100*b1cdbd2cSJim Jagielski };
101*b1cdbd2cSJim Jagielski
TextSourceAdaptor(ImplLayoutArgs & la,const int nContextLen)102*b1cdbd2cSJim Jagielski inline TextSourceAdaptor::TextSourceAdaptor(ImplLayoutArgs &la, const int nContextLen) throw()
103*b1cdbd2cSJim Jagielski : maLayoutArgs(la),
104*b1cdbd2cSJim Jagielski mnEnd(std::min(la.mnLength, nContextLen)),
105*b1cdbd2cSJim Jagielski mpFeatures(NULL)
106*b1cdbd2cSJim Jagielski {
107*b1cdbd2cSJim Jagielski }
108*b1cdbd2cSJim Jagielski
operator ImplLayoutArgs&()109*b1cdbd2cSJim Jagielski inline TextSourceAdaptor::operator ImplLayoutArgs & () throw() {
110*b1cdbd2cSJim Jagielski return maLayoutArgs;
111*b1cdbd2cSJim Jagielski }
112*b1cdbd2cSJim Jagielski
switchLayoutArgs(ImplLayoutArgs & aNewArgs)113*b1cdbd2cSJim Jagielski inline void TextSourceAdaptor::switchLayoutArgs(ImplLayoutArgs & aNewArgs)
114*b1cdbd2cSJim Jagielski {
115*b1cdbd2cSJim Jagielski mnEnd += aNewArgs.mnMinCharPos - maLayoutArgs.mnMinCharPos;
116*b1cdbd2cSJim Jagielski maLayoutArgs = aNewArgs;
117*b1cdbd2cSJim Jagielski }
118*b1cdbd2cSJim Jagielski
119*b1cdbd2cSJim Jagielski #endif
120