libkmahjongg

kmahjonggbackground.cpp

00001 /*
00002     Copyright (C) 1997 Mathias Mueller   <in5y158@public.uni-hamburg.de>
00003     Copyright (C) 2006 Mauricio Piacentini   <mauricio@tabuleiro.com>
00004 
00005     Libkmahjongg is free software; you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation; either version 2 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with this program; if not, write to the Free Software
00017     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00018 */
00019 
00020 #include "kmahjonggbackground.h"
00021 
00022 #include <kstandarddirs.h>
00023 #include <klocale.h>
00024 #include <kconfig.h>
00025 #include <kconfiggroup.h>
00026 #include <ksvgrenderer.h>
00027 #include <QImage>
00028 #include <QFile>
00029 #include <QMap>
00030 #include <QPixmap>
00031 #include <QPixmapCache>
00032 #include <QPainter>
00033 #include <KDebug>
00034 
00035 class KMahjonggBackgroundPrivate
00036 {
00037 public:
00038     KMahjonggBackgroundPrivate()
00039         : w(1), h(1), graphicsLoaded(false), isTiled(true), isSVG(false)
00040     {
00041     }
00042 
00043     QMap<QString, QString> authorproperties;
00044     QString pixmapCacheNameFromElementId(const QString &elementid);
00045     QPixmap renderBG(short width, short height);
00046 
00047     QPixmap backgroundPixmap;
00048     QBrush backgroundBrush;
00049     QString filename;
00050     QString graphicspath;
00051     short w;
00052     short h;
00053 
00054     KSvgRenderer svg;
00055 
00056     bool graphicsLoaded;
00057     bool isTiled;
00058     bool isSVG;
00059 };
00060 
00061 KMahjonggBackground::KMahjonggBackground()
00062     : d(new KMahjonggBackgroundPrivate)
00063 {
00064     static bool _inited = false;
00065     if (_inited)
00066         return;
00067     KGlobal::dirs()->addResourceType("kmahjonggbackground", "data", QString::fromLatin1("kmahjongglib/backgrounds/"));
00068 
00069     KGlobal::locale()->insertCatalog("libkmahjongglib");
00070     _inited = true;
00071 }
00072 
00073 KMahjonggBackground::~KMahjonggBackground() {
00074     delete d;
00075 }
00076 
00077 bool KMahjonggBackground::loadDefault()
00078 {
00079     QString idx = "default.desktop";
00080 
00081     QString bgPath = KStandardDirs::locate("kmahjonggbackground", idx);
00082 kDebug() << "Inside LoadDefault(), located background at" << bgPath;
00083     if (bgPath.isEmpty()) {
00084         return false;
00085     }
00086     return load(bgPath, 0, 0);
00087 }
00088 
00089 #define kBGVersionFormat 1
00090 
00091 bool KMahjonggBackground::load(const QString &file, short width, short height) {
00092 kDebug() << "Background loading";
00093     d->isSVG = false;
00094 
00095     kDebug() << "Attempting to load .desktop at" << file;
00096 
00097     // verify if it is a valid file first and if we can open it
00098     QFile bgfile(file);
00099     if (!bgfile.open(QIODevice::ReadOnly)) {
00100       return (false);
00101     }
00102     bgfile.close();
00103 
00104     KConfig bgconfig(file, KConfig::SimpleConfig);
00105     KConfigGroup group = bgconfig.group("KMahjonggBackground");
00106 
00107     d->authorproperties.insert("Name", group.readEntry("Name"));// Returns translated data
00108     d->authorproperties.insert("Author", group.readEntry("Author"));
00109     d->authorproperties.insert("Description", group.readEntry("Description"));
00110     d->authorproperties.insert("AuthorEmail", group.readEntry("AuthorEmail"));
00111 
00112     //Version control
00113     int bgversion = group.readEntry("VersionFormat",0);
00114     //Format is increased when we have incompatible changes, meaning that older clients are not able to use the remaining information safely
00115     if (bgversion > kBGVersionFormat) {
00116         return false;
00117     }
00118 
00119     QString graphName = group.readEntry("FileName");
00120 
00121     d->graphicspath = KStandardDirs::locate("kmahjonggbackground", graphName);
00122     kDebug() << "Using background at" << d->graphicspath;
00123 
00124     if (d->graphicspath.isEmpty()) return (false);
00125 
00126     if (group.readEntry("Tiled",0))
00127     {
00128         d->w = group.readEntry("Width",0);
00129         d->h = group.readEntry("Height",0);
00130         d->isTiled = true;
00131     } else {
00132         d->w = width;
00133         d->h = height;
00134         d->isTiled = false;
00135     }
00136     d->graphicsLoaded = false;
00137     d->filename = file;
00138     return true;
00139 }
00140 
00141 bool KMahjonggBackground::loadGraphics() {
00142   if (d->graphicsLoaded == true) return (true) ;
00143   
00144   d->svg.load(d->graphicspath);
00145   if (d->svg.isValid()) {
00146     d->isSVG = true;
00147   } else {
00148     kDebug() << "could not load svg";
00149     return( false );
00150   }
00151   return (true);
00152 }
00153 
00154 void KMahjonggBackground::sizeChanged(int newW, int newH) {
00155         //in tiled mode we do not care about the whole field size
00156     if (d->isTiled) return;
00157 
00158     if (newW == d->w && newH == d->h)
00159         return;
00160     d->w = newW;
00161     d->h = newH;
00162 }
00163 
00164 QString KMahjonggBackgroundPrivate::pixmapCacheNameFromElementId(const QString &elementid) {
00165   return authorproperties["Name"]+ elementid+QString("W%1H%2").arg(w).arg(h);
00166 }
00167 
00168 QPixmap KMahjonggBackgroundPrivate::renderBG(short width, short height) {
00169     QImage qiRend(QSize(width, height),QImage::Format_ARGB32_Premultiplied);
00170     qiRend.fill(0);
00171 
00172     if (svg.isValid()) {
00173             QPainter p(&qiRend);
00174         svg.render(&p);
00175     }
00176     return QPixmap::fromImage(qiRend);
00177 }
00178 
00179 QBrush & KMahjonggBackground::getBackground() {
00180     if (!QPixmapCache::find(d->pixmapCacheNameFromElementId(d->filename), d->backgroundPixmap)) {
00181         d->backgroundPixmap = d->renderBG(d->w, d->h);
00182         QPixmapCache::insert(d->pixmapCacheNameFromElementId(d->filename), d->backgroundPixmap);
00183     }
00184     d->backgroundBrush = QBrush(d->backgroundPixmap);
00185     return d->backgroundBrush;
00186 }
00187 
00188 QString KMahjonggBackground::path() const {
00189     return d->filename;
00190 }
00191 
00192 QString KMahjonggBackground::authorProperty(const QString &key) const {
00193     return d->authorproperties[key];
00194 }
libkmahjongg

kmahjonggbackground.cpp

libkmahjongg

API Reference
