First version of the zoomer placement still needs some work though

3 files changed, 52 insertions, 7 deletions

diff --git a/noncore/graphics/opie-eye/gui/imagescrollview.cpp b/noncore/graphics/opie-eye/gui/imagescrollview.cpp
index ad19219..5b12258 100644
--- a/noncore/graphics/opie-eye/gui/imagescrollview.cpp
+++ b/noncore/graphics/opie-eye/gui/imagescrollview.cpp
@@ -1,126 +1,141 @@
 #include "imagescrollview.h"
 
 #include <opie2/odebug.h>
 
 using namespace Opie::Core;
 
 #include <qimage.h>
 #include <qlayout.h>
 
 ImageScrollView::ImageScrollView( QWidget* parent, const char* name,  WFlags f )
     :QScrollView(parent,name,f|Qt::WRepaintNoErase ),_image_data(),_original_data(),scale_to_fit(true),
      rotate_to_fit(true),first_resize_done(false),m_lastName("")
 {
     init();
 }
 
 ImageScrollView::ImageScrollView (const QImage&img, QWidget * parent, const char * name, WFlags f,bool always_scale,bool rfit)
     :QScrollView(parent,name,f|Qt::WRepaintNoErase),_image_data(),_original_data(img),scale_to_fit(always_scale),
     rotate_to_fit(rfit),first_resize_done(false),m_lastName("")
 {
     _original_data.convertDepth(QPixmap::defaultDepth());
     _original_data.setAlphaBuffer(false);
     init();
 }
 
 ImageScrollView::ImageScrollView (const QString&img, QWidget * parent, const char * name, WFlags f,bool always_scale,bool rfit)
     :QScrollView(parent,name,f|Qt::WRepaintNoErase),_image_data(),_original_data(),scale_to_fit(always_scale),
     rotate_to_fit(rfit),first_resize_done(false),m_lastName("")
 {
     init();
     setImage(img);
 }
 
 void ImageScrollView::setImage(const QImage&img)
 {
     _image_data = QImage();
     _original_data=img;
     _original_data.convertDepth(QPixmap::defaultDepth());
     _original_data.setAlphaBuffer(false);
     m_lastName = "";
     if (first_resize_done) {
         generateImage();
     }
 }
 
 void ImageScrollView::setImage( const QString& path ) {
     odebug << "load new image " << oendl;
     if (m_lastName == path) return;
     m_lastName = path;
     _original_data.load(path);
     _original_data.convertDepth(QPixmap::defaultDepth());
     _original_data.setAlphaBuffer(false);
     _image_data = QImage();
     if (first_resize_done) {
         generateImage();
     }
 }
 
 /* should be called every time the QImage changed it content */
 void ImageScrollView::init()
 {
     odebug << "init " << oendl;
+
+    /*
+     * create the zoomer
+     * and connect ther various signals
+     */
+    _zoomer = new Opie::MM::OImageZoomer( this, "The Zoomer" );
+    connect(_zoomer, SIGNAL( zoomAreaRel(int,int)),
+            this, SLOT(scrollBy(int,int)) );
+    connect(this,SIGNAL(contentsMoving(int,int)),
+            _zoomer, (SLOT(setVisiblePoint(int,int))) );
+    connect(this,SIGNAL(imageSizeChanged(const QSize&)),
+            _zoomer, SLOT(setImageSize(const QSize&)) );
+    connect(this,SIGNAL(viewportSizeChanged(const QSize&)),
+            _zoomer, SLOT(setViewPortSize(const QSize&)) );
+
     viewport()->setBackgroundColor(white);
     setFocusPolicy(QWidget::StrongFocus);
     if (first_resize_done) {
         last_rot = Rotate0;
         generateImage();
         odebug << "reinit display " << oendl;
     } else if (_original_data.size().isValid()) {
         resizeContents(_original_data.width(),_original_data.height());
     }
 }
 
 void ImageScrollView::setAutoRotate(bool how)
 {
     /* to avoid double repaints */
     if (rotate_to_fit != how) {
         rotate_to_fit = how;
         _image_data = QImage();
         generateImage();
     }
 }
 
 void ImageScrollView::setAutoScale(bool how)
 {
     scale_to_fit = how;
     if (!how) {
         rotate_to_fit = false;
     }
     _image_data = QImage();
     generateImage();
 }
 
 ImageScrollView::~ImageScrollView()
 {
 }
 
 void ImageScrollView::rescaleImage(int w, int h)
 {
     if (_image_data.width()==w && _image_data.height()==h) {
         return;
     }
     double hs = (double)h / (double)_image_data.height() ;
     double ws = (double)w / (double)_image_data.width() ;
     double scaleFactor = (hs > ws) ? ws : hs;
     int smoothW = (int)(scaleFactor * _image_data.width());
     int smoothH = (int)(scaleFactor * _image_data.height());
     _image_data = _image_data.smoothScale(smoothW,smoothH);
 }
 
 void ImageScrollView::rotate_into_data(Rotation r)
 {
     /* realy - we must do this that way, 'cause when acting direct on _image_data the app will
        segfault :( */
     QImage dest;
     int x, y;
     if ( _original_data.depth() > 8 )
     {
         unsigned int *srcData, *destData;
         switch ( r )
         {
             case Rotate90:
                 dest.create(_original_data.height(), _original_data.width(), _original_data.depth());
                 for ( y=0; y < _original_data.height(); ++y )
                 {
                     srcData = (unsigned int *)_original_data.scanLine(y);
@@ -190,177 +205,196 @@ void ImageScrollView::rotate_into_data(Rotation r)
                     destTable[x] = srcTable[x];
                 for ( y=0; y < _original_data.height(); ++y )
                 {
                     srcData = (unsigned char *)_original_data.scanLine(y);
                     destData = (unsigned char *)dest.scanLine(_original_data.height()-y-1);
                     for ( x=0; x < _original_data.width(); ++x )
                         destData[_original_data.width()-x-1] = srcData[x];
                 }
                 break;
             case Rotate270:
                 dest.create(_original_data.height(), _original_data.width(), _original_data.depth());
                 dest.setNumColors(_original_data.numColors());
                 srcTable = (unsigned int *)_original_data.colorTable();
                 destTable = (unsigned int *)dest.colorTable();
                 for ( x=0; x < _original_data.numColors(); ++x )
                     destTable[x] = srcTable[x];
                 for ( y=0; y < _original_data.height(); ++y )
                 {
                     srcData = (unsigned char *)_original_data.scanLine(y);
                     for ( x=0; x < _original_data.width(); ++x )
                     {
                         destData = (unsigned char *)dest.scanLine(_original_data.width()-x-1);
                         destData[y] = srcData[x];
                     }
                 }
                 break;
             default:
                 dest = _original_data;
                 break;
         }
 
     }
     _image_data = dest;
 }
 
 void ImageScrollView::generateImage()
 {
     Rotation r = Rotate0;
     if (width()>height()&&_original_data.width()<_original_data.height() ||
         width()<height()&&_original_data.width()>_original_data.height()) {
         if (rotate_to_fit) r = Rotate90;
     }
     odebug << " r = " << r << oendl;
     if (scale_to_fit) {
         if (!_image_data.size().isValid()||width()>_image_data.width()||height()>_image_data.height()) {
             odebug << "Rescaling data" << oendl;
             if (r==Rotate0) {
                 _image_data = _original_data;
             } else {
                 rotate_into_data(r);
             }
         }
         rescaleImage(width(),height());
         resizeContents(_image_data.width(),_image_data.height());
     }  else if (!first_resize_done||r!=last_rot||_image_data.width()==0) {
         if (r==Rotate0) {
             _image_data = _original_data;
         } else {
             rotate_into_data(r);
         }
         last_rot = r;
         resizeContents(_image_data.width(),_image_data.height());
     }
     _pdata.convertFromImage(_image_data);
+
+    /*
+     * update the zoomer
+     */
+    emit imageSizeChanged( _image_data.size() );
+    rescaleImage( 128, 128 );
+    _zoomer->setImage( _image_data );
+
+    /*
+     * invalidate
+     */
     _image_data=QImage();
 }
 
 void ImageScrollView::resizeEvent(QResizeEvent * e)
 {
     odebug << "ImageScrollView resizeEvent" << oendl;
     QScrollView::resizeEvent(e);
     generateImage();
     first_resize_done = true;
+    emit viewportSizeChanged( viewport()->size() );
+
+   /*
+    * move scrollbar
+    */
+    _zoomer->setGeometry( viewport()->width()-100, viewport()->height()-50, 100, 50 );
 }
 
 void ImageScrollView::keyPressEvent(QKeyEvent * e)
 {
     if (!e) return;
     int dx = horizontalScrollBar()->lineStep();
     int dy = verticalScrollBar()->lineStep();
     if (e->key()==Qt::Key_Right) {
         scrollBy(dx,0);
         e->accept();
     } else if (e->key()==Qt::Key_Left) {
         scrollBy(0-dx,0);
         e->accept();
     } else if (e->key()==Qt::Key_Up) {
         scrollBy(0,0-dy);
         e->accept();
     } else if (e->key()==Qt::Key_Down) {
         scrollBy(0,dy);
         e->accept();
     } else {
         e->ignore();
     }
     QScrollView::keyPressEvent(e);
 }
 
 void ImageScrollView::drawContents(QPainter * p, int clipx, int clipy, int clipw, int cliph)
 {
     int w = clipw;
     int h = cliph;
     int x = clipx;
     int y = clipy;
     bool erase = false;
 
     if (!_pdata.size().isValid()) {
         p->fillRect(clipx,clipy,clipw,cliph,white);
         return;
     }
     if (w>_pdata.width()) {
         w=_pdata.width();
         x = 0;
         erase = true;
     } else if (x+w>_pdata.width()){
         x = _pdata.width()-w;
     }
     if (h>_pdata.height()) {
         h=_pdata.height();
         y = 0;
         erase = true;
     } else if (y+h>_pdata.height()){
         y = _pdata.height()-h;
     }
     if (erase||_original_data.hasAlphaBuffer()) {
         p->fillRect(clipx,clipy,clipw,cliph,white);
     }
     p->drawPixmap(clipx,clipy,_pdata,x,y,w,h);
 }
 
 /* using the real geometry points and not the translated points is wanted! */
 void ImageScrollView::viewportMouseMoveEvent(QMouseEvent* e)
 {
+    odebug << "Move X and Y " << e->x() << " " << e->y() << oendl;
     int mx, my;
     mx = e->x();
     my = e->y();
     if (_mouseStartPosX!=-1 && _mouseStartPosY!=-1) {
         int diffx = _mouseStartPosX-mx;
         int diffy = _mouseStartPosY-my;
 #if 0
         QScrollBar*xbar = horizontalScrollBar();
         QScrollBar*ybar = verticalScrollBar();
         if (xbar->value()+diffx>xbar->maxValue()) {
             diffx = xbar->maxValue()-xbar->value();
         } else if (xbar->value()+diffx<0) {
             diffx=0-xbar->value();
         }
         if (ybar->value()+diffy>ybar->maxValue()) {
             diffy = ybar->maxValue()-ybar->value();
         } else if (ybar->value()+diffy<0) {
             diffy=0-ybar->value();
         }
 #endif
         scrollBy(diffx,diffy);
     }
     _mouseStartPosX=mx;
     _mouseStartPosY=my;
 }
 
-void ImageScrollView::contentsMousePressEvent ( QMouseEvent * )
+void ImageScrollView::contentsMousePressEvent ( QMouseEvent * e)
 {
+    odebug << " X and Y " << e->x() << " " << e->y() << oendl;
     /* this marks the beginning of a possible mouse move. Due internal reasons of QT
        the geometry values here may real differ from that set in MoveEvent (I don't know
        why). For getting them in real context, we use the first move-event to set the start
-       position ;) 
+       position ;)
     */
     _mouseStartPosX = -1;
     _mouseStartPosY = -1;
 }
 
 void ImageScrollView::setDestructiveClose() {
     WFlags fl = getWFlags();
     /* clear it just in case */
     fl &= ~WDestructiveClose;
     fl |= WDestructiveClose;
     setWFlags( fl );
 }
diff --git a/noncore/graphics/opie-eye/gui/imagescrollview.h b/noncore/graphics/opie-eye/gui/imagescrollview.h
index eb91dbd..1b25103 100644
--- a/noncore/graphics/opie-eye/gui/imagescrollview.h
+++ b/noncore/graphics/opie-eye/gui/imagescrollview.h
@@ -1,64 +1,71 @@
 #ifndef _IMAGE_SCROLL_VIEW_H
 #define _IMAGE_SCROLL_VIEW_H
 
+#include <lib/oimagezoomer.h>
+
 #include <qscrollview.h>
 #include <qimage.h>
 #include <qpixmap.h>
 #include <qstring.h>
 #include <qdialog.h>
 
+
+
 class QPainter;
 
 class ImageScrollView:public QScrollView
 {
     Q_OBJECT
 public:
     ImageScrollView( QWidget* parent, const char* name = 0, WFlags fl = 0 );
     ImageScrollView (const QImage&, QWidget * parent=0, const char * name=0, WFlags f=0,bool always_scale=false,bool rfit=false );
     ImageScrollView (const QString&, QWidget * parent=0, const char * name=0, WFlags f=0,bool always_scale=false,bool rfit=false );
     virtual ~ImageScrollView();
 
     virtual void setImage(const QImage&);
     virtual void setImage( const QString& path );
     virtual void setDestructiveClose();
 
     virtual void setAutoRotate(bool);
     virtual void setAutoScale(bool);
 
     enum  Rotation {
         Rotate0,
         Rotate90,
         Rotate180,
         Rotate270
     };
 
 signals:
     void sig_return();
+    void imageSizeChanged( const QSize& );
+    void viewportSizeChanged( const QSize& );
 
 protected:
     virtual void drawContents ( QPainter * p, int clipx, int clipy, int clipw, int cliph );
     void init();
 
+    Opie::MM::OImageZoomer *_zoomer;
     QImage _image_data;
     QImage _original_data;
     QPixmap _pdata;
 
     int _mouseStartPosX,_mouseStartPosY;
 
     bool scale_to_fit;
     bool rotate_to_fit;
     bool first_resize_done;
     Rotation last_rot;
     QString m_lastName;
     virtual void rescaleImage(int w, int h);
 
     virtual void rotate_into_data(Rotation r);
     virtual void generateImage();
 
 protected slots:
     virtual void viewportMouseMoveEvent(QMouseEvent* e);
     virtual void contentsMousePressEvent ( QMouseEvent * e);
     virtual void resizeEvent(QResizeEvent * e);
     virtual void keyPressEvent(QKeyEvent * e);
 };
 #endif
diff --git a/noncore/graphics/opie-eye/lib/oimagezoomer.cpp b/noncore/graphics/opie-eye/lib/oimagezoomer.cpp
index 178fbd4..ffa3c0c 100644
--- a/noncore/graphics/opie-eye/lib/oimagezoomer.cpp
+++ b/noncore/graphics/opie-eye/lib/oimagezoomer.cpp
@@ -1,116 +1,120 @@
 #include "oimagezoomer.h"
 
 #include <qimage.h>
 #include <qpixmap.h>
 #include <qpainter.h>
 #include <qrect.h>
 #include <qpoint.h>
 #include <qsize.h>
 
 namespace Opie {
 namespace MM {
 OImageZoomer::OImageZoomer( QWidget* parent,  const char* name,  WFlags fl )
     :  QFrame( parent, name, fl ) {
     init();
 }
 
 OImageZoomer::OImageZoomer( const QPixmap& pix, QWidget* par, const char* name, WFlags fl )
     : QFrame( par, name, fl ) {
     init();
     setImage( pix );
 }
 
 OImageZoomer::OImageZoomer( const QSize& pSize, const QSize& vSize, QWidget* par,
                             const char* name, WFlags fl )
     : QFrame( par, name, fl ), m_imgSize( pSize ),m_visSize( vSize ) {
     init();
 }
 
+OImageZoomer::~OImageZoomer() {
+
+}
+
 void OImageZoomer::init() {
     setFrameStyle( Panel | Sunken );
 }
 
 void OImageZoomer::setImageSize( const QSize& size ) {
     m_imgSize = size;
     repaint();
 }
 void OImageZoomer::setViewPortSize( const QSize& size ) {
     m_visSize = size;
     repaint();
 }
 
 void OImageZoomer::setVisiblePoint( const QPoint& pt ) {
     m_visPt = pt;
     repaint();
 }
 
 void OImageZoomer::setImage( const QImage& img) {
     m_img = img;
     resizeEvent( 0 );
     repaint();
 }
 
 void OImageZoomer::setImage( const QPixmap& pix) {
     setImage( pix.convertToImage() );
 }
 
 void OImageZoomer::resizeEvent( QResizeEvent* ev ) {
     QFrame::resizeEvent( ev );
     setBackgroundOrigin(  QWidget::WidgetOrigin );
     // TODO Qt3 use PalettePixmap and use size
     QPixmap pix; pix.convertFromImage( m_img.smoothScale( size().width(), size().height() ) );
     setBackgroundPixmap( pix);
 }
 
 void OImageZoomer::drawContents( QPainter* p ) {
     /*
      * if the page size
      */
     if ( m_imgSize.isEmpty() )
         return;
 
    /*
     * paint a red rect which represents the visible size
     *
     * We need to recalculate x,y and width and height of the
     * rect. So image size relates to contentRect
     *
     */
     QRect c( contentsRect() );
     p->setPen( Qt::red );
 
     int len = m_imgSize.width();
     int x = (c.width()*m_visPt.x())/len        + c.x();
     int w = (c.width()*m_visSize.width() )/len + c.x();
     if ( w > c.width() ) w = c.width();
 
     len = m_imgSize.height();
     int y = (c.height()*m_visPt.y() )/len          + c.y();
     int h = (c.height()*m_visSize.height() )/len + c.y();
     if ( h > c.height() ) h = c.height();
 
     p->drawRect( x, y, w, h );
 }
 
 void OImageZoomer::mousePressEvent( QMouseEvent*  ) {
-
+    m_mouseX = m_mouseY = -1;
 }
 
 void OImageZoomer::mouseMoveEvent( QMouseEvent* ev ) {
     int mx, my;
     mx = ev->x();
     my = ev->y();
 
     if ( m_mouseX != -1 && m_mouseY != -1 ) {
-        int diffx = m_mouseX-mx;
-        int diffy = m_mouseY-my;
-//       emit zoomAreaRel( diffx, diffy );
-//      emit zoomArea(
+        int diffx = ( mx - m_mouseX ) * m_imgSize.width() / width();
+        int diffy = ( my - m_mouseY ) * m_imgSize.height() / height();
+        emit zoomAreaRel( diffx, diffy );
+        emit zoomArea(m_visPt.x()+diffx, m_visPt.y()+diffy );
     }
     m_mouseX = mx;
     m_mouseY = my;
 }
 
 
 }
 }