]> Shamusworld >> Repos - architektonas/blobdiff - src/forms/librarywidget.cpp
Partially fixed thumbnail rendering on Library Browser.
[architektonas] / src / forms / librarywidget.cpp
index ebb8acb0319e19d11b904f0ba68558da7baa426e..8ca7ca1b5f361d746ead6144ad3231f1f9cec3af 100644 (file)
 // ---  ----------  -----------------------------------------------------------
 // JLH  05/10/2010  Created this file. :-)
 // JLH  08/28/2010  Restored functionality to library browser
+// JLH  09/06/2010  Partially fixed thumbnail rendering
 //
 
+/*
+BUGS:
+
+- Picks up thumbnail directories twice--only once if thumbnail dir doesn't exist
+*/
+
 #include "librarywidget.h"
 
 #include "actionhandler.h"
@@ -293,7 +300,7 @@ QString LibraryWidget::getPathToPixmap(const QString & dir, const QString & dxfF
 
        // List of all directories that contain part libraries:
        QStringList directoryList = RS_SYSTEM->getDirectoryList("library");
-       directoryList.prepend(RS_SYSTEM->getHomeDir() + "/.qcad/library");
+       directoryList.prepend(RS_SYSTEM->getHomeDir() + "/.architektonas/library");
        QStringList::Iterator it;
 
        QFileInfo fiDxf(dxfPath);
@@ -331,83 +338,70 @@ QString LibraryWidget::getPathToPixmap(const QString & dir, const QString & dxfF
                }
        }
 
-       // the thumbnail must be created in the user's home.
-
-       // create all directories needed:
-       RS_SYSTEM->createHomePath("/.qcad/library" + dir);
-       /*QString d = "/.qcad/library" + dir;
-       QDir dr;
-
-       QStringList dirs = QStringList::split('/', d, false);
-       QString created = RS_SYSTEM->getHomeDir();
-       for (it=dirs.begin(); it!=dirs.end(); ++it) {
-               created += QString("/%1").arg(*it);
-
-               if (created.isEmpty() || QFileInfo(created).isDir() || dr.mkdir(created, true)) {
-       RS_DEBUG->print("LibraryWidget: Created directory '%s'",
-       created.toLatin1().data());
-               }
-               else {
-       RS_DEBUG->print(RS_Debug::D_ERROR,
-       "LibraryWidget: Cannot create directory '%s'",
-       created.toLatin1().data());
-                       return "";
-               }
-}
-       */
+       // The thumbnail must be created in the user's home.
+       // So, create all directories needed:
+       RS_SYSTEM->createHomePath("/.architektonas/library" + dir);
 
-       QString d = RS_SYSTEM->getHomeDir() + "/.qcad/library" + dir;
+       QString d = RS_SYSTEM->getHomeDir() + "/.architektonas/library" + dir;
+//printf("librarywidget: d = \"%s\"\n", d.toAscii().data());
 
 //     pngPath = d + "/" + fiDxf.baseName(true) + ".png";
        pngPath = d + "/" + fiDxf.completeBaseName() + ".png";
+//printf("librarywidget: pngPath = \"%s\"\n", pngPath.toAscii().data());
 
-       QPixmap * buffer = new QPixmap(128, 128);
-//     RS_PainterQt * painter = new RS_PainterQt(buffer);
-       QPainter qpntr(buffer);
+       // Ugh. This is a mess and doesn't work right anyway...
+       // Problem is StaticGraphicView doesn't follow a standard rendering path,
+       // so all this crap just ends in failure. Not sure how to fix.
+/**
+I suppose one way to do it would be to make a CreateImage() function in GraphicView,
+then we wouldn't have all this messiness...
+I think the way the redraw works is like that--it creates its own PaintInterface
+and QPainter and sets "painter" equal to it... That being the case, it would be
+a simple matter to modify StaticGraphicView to utilize that... Let's see...
+Which it should be doing, but, for some reason, it fails. Dunno why.
+
+It only fails for certain DXFs. Dunno why.
+*/
+
+       QPixmap buffer(128, 128);
+       QPainter qpntr(&buffer);
        PaintInterface * painter = new PaintInterface(&qpntr);
-//     painter->setBackgroundColor(RS_Color(255, 255, 255));
-//     painter->eraseRect(0, 0, 128, 128);
-//     qpntr.setBackgroundColor(RS_Color(255, 255, 255));
        qpntr.setBackground(Qt::white);
        qpntr.eraseRect(0, 0, 128, 128);
 
        RS_StaticGraphicView gv(128, 128, painter);
-       Drawing graphic;
+       Drawing drawing;
 
-       if (graphic.open(dxfPath, RS2::FormatUnknown))
+       if (drawing.open(dxfPath, RS2::FormatUnknown))
        {
                RS_Color black(0, 0, 0);
 
-               for(RS_Entity * e=graphic.firstEntity(RS2::ResolveAll); e!=NULL; e=graphic.nextEntity(RS2::ResolveAll))
+               // Set all pens in the drawing to BLACK
+               for(RS_Entity * e=drawing.firstEntity(RS2::ResolveAll); e!=NULL; e=drawing.nextEntity(RS2::ResolveAll))
                {
                        RS_Pen pen = e->getPen();
                        pen.setColor(black);
                        e->setPen(pen);
                }
 
-               gv.setContainer(&graphic);
+               gv.setContainer(&drawing);
                gv.zoomAuto(false);
-               gv.drawEntity(&graphic, true);
+//This works, but somehow doesn't work ALL the time
+               gv.drawEntity(&drawing, true);
 
-#if 0
-               QImageIO iio;
-               QImage img;
-               img = *buffer;
-               img = img.smoothScale(64, 64);
-               iio.setImage(img);
-               iio.setFileName(pngPath);
-               iio.setFormat("PNG");
-
-               if (!iio.write())
+               QImageWriter writer;
+               QImage image = buffer.toImage();
+               image.scaled(64, 64, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+               writer.setFileName(pngPath);
+               writer.setFormat("png");
+
+               if (!writer.write(image))
                {
-                       pngPath = "";
                        RS_DEBUG->print(RS_Debug::D_ERROR,
                                "LibraryWidget::getPathToPixmap: Cannot write thumbnail: '%s'",
                                pngPath.toLatin1().data());
+                       pngPath = "";
                }
-#else
-#warning "LibraryWidget::getPathToPixmap(): Needs porting to Qt4... !!! FIX !!!"
-#endif
        }
        else
        {
@@ -415,7 +409,23 @@ QString LibraryWidget::getPathToPixmap(const QString & dir, const QString & dxfF
        }
 
        delete painter;
-       delete buffer;
 
        return pngPath;
 }
+
+#if 0
+
+QWidget::setMinimumSize: (/QMdi::ControlLabel) Negative sizes (-1,-1) are not possible
+QPaintDevice: Cannot destroy paint device that is being painted
+
+Program received signal SIGSEGV, Segmentation fault.
+0x085cd068 in ?? ()
+(gdb) bt
+#0  0x085cd068 in ?? ()
+#1  0xb7818bd0 in QPainter::~QPainter() () from /usr/lib/qt4/libQtGui.so.4
+#2  0x081c1e8e in LibraryWidget::getPathToPixmap(QString const&, QString const&, QString const&) ()
+#3  0x081c0fa6 in LibraryWidget::getPixmap(QString const&, QString const&, QString const&) ()
+#4  0x081c0775 in LibraryWidget::updatePreview(QTreeWidgetItem*, int) ()
+#5  0x08237d5e in LibraryWidget::qt_metacall(QMetaObject::Call, int, void**) ()
+
+#endif