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Diffstat (limited to 'libkscan/img_canvas.cpp')
| -rw-r--r-- | libkscan/img_canvas.cpp | 1115 |
1 files changed, 1115 insertions, 0 deletions
diff --git a/libkscan/img_canvas.cpp b/libkscan/img_canvas.cpp new file mode 100644 index 00000000..eccaa412 --- /dev/null +++ b/libkscan/img_canvas.cpp @@ -0,0 +1,1115 @@ +/* This file is part of the KDE Project + Copyright (C) 1999 Klaas Freitag <[email protected]> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include <qapplication.h> +#include <qfiledialog.h> +#include <qstring.h> +#include <qmessagebox.h> +#include <qscrollview.h> +#include <kpopupmenu.h> +#include <qlabel.h> +#include <qdict.h> +#include <qimage.h> +#include <qpainter.h> + +#include <klocale.h> +#include <kstyle.h> +#include <kapplication.h> + +#include <kpixmapio.h> +#include <kdebug.h> +#include <kiconloader.h> +#include <kcmenumngr.h> +#include <qpixmap.h> + +#define __IMG_CANVAS_CPP__ + +#include "imgscaledialog.h" +#include "img_canvas.h" + + + +#define MIN(x,y) (x<y?x:y) + + +inline void debug_rect( const char *name, QRect *r ) +{ + kdDebug(29000) << (name ? name: "NONAME") << ": " << r->x() << ", " << r->y() << ", " << r->width() << ", " << r->height() << endl; +} + + +class ImageCanvas::ImageCanvasPrivate +{ +public: + ImageCanvasPrivate() + : keepZoom(false), + readOnly(false), + scaleKind( UNSPEC ), + defaultScaleKind( FIT_ORIG ) + {} + + bool keepZoom; /* keep the zoom settings if images change */ + bool readOnly; + ScaleKinds scaleKind; + ScaleKinds defaultScaleKind; + + QValueList<QRect> highlightRects; +}; + +ImageCanvas::ImageCanvas(QWidget *parent, + const QImage *start_image, + const char *name ): + QScrollView( parent, name ), + m_contextMenu(0) +{ + d = new ImageCanvasPrivate(); + + scale_factor = 100; // means original size + maintain_aspect = true; + selected = new QRect; + selected->setWidth(0); + selected->setHeight(0); + + timer_id = 0; + pmScaled = 0; + + image = start_image; + moving = MOVE_NONE; + + QSize img_size; + + if( image && ! image->isNull() ) + { + img_size = image->size(); + pmScaled = new QPixmap( img_size ); + +#ifdef USE_KPIXMAPIO + *pmScaled = pixIO.convertToPixmap(*image); +#else + pmScaled->convertFromImage( *image ); +#endif + + acquired = true; + } else { + img_size = size(); + } + + + update_scaled_pixmap(); + + // timer-Start and stop + connect( this, SIGNAL( newRect()), SLOT( newRectSlot())); + connect( this, SIGNAL( noRect()), SLOT( noRectSlot())); + + //zoomOut();scrollview/scrollview + viewport()->setCursor( crossCursor ); + cr1 = 0; + cr2 = 0; + viewport()->setMouseTracking(TRUE); + viewport()->setBackgroundMode(PaletteBackground); + show(); + +} + +ImageCanvas::~ImageCanvas() +{ + kdDebug(29000) << "Destructor of ImageCanvas" << endl; + noRectSlot(); + if( selected ) delete selected; + selected = 0; + if( pmScaled ) delete pmScaled; + pmScaled = 0; + delete d; +} + +void ImageCanvas::deleteView( QImage *delimage ) +{ + const QImage *img = rootImage(); + + if( delimage == img ) + { + kdDebug(29000) << "ImageCanvas -> emiting newImage(0L)" << endl; + newImage( 0L ); + noRectSlot(); + } + +} + +void ImageCanvas::newImageHoldZoom( QImage *new_image ) +{ + bool holdZ = d->keepZoom; + + d->keepZoom = true; + newImage( new_image ); + d->keepZoom = holdZ; +} + +void ImageCanvas::newImage( QImage *new_image ) +{ + + /** do cleanups **/ + // dont free old image -> not yours + image = new_image; + + if( ! image || image->isNull()) + { + kdDebug(29000) << "newImage: Got Empty image !" << endl; + } + + if( pmScaled ) + { + delete pmScaled; + pmScaled = 0L; + } + + if( selected ) + { + noRectSlot(); + } + + /* throw away all highlights */ + d->highlightRects.clear(); + + /** handle the new image **/ + if( image ) + { + if( image->depth() == 1 ) { + pmScaled = new QPixmap( image->size(), 1 ); + } else { + int i = QPixmap::defaultDepth(); + pmScaled = new QPixmap( image->size(), i); + } + + // image->convertDepth(32); +#ifdef USE_KPIXMAPIO + + *pmScaled = pixIO.convertToPixmap(*image); +#else + pmScaled->convertFromImage( *image ); + // *pmScaled = image->convertToPixmap( ); +#endif + + acquired = true; + + if( d->keepZoom ) + { + kdDebug(29000) << "Preserving Zoom settings!" << endl; + } + else + { + kdDebug(29000) << "Resetting Zoom to original size!" << endl; + setScaleKind( defaultScaleKind() ); + } + + update_scaled_pixmap(); + setContentsPos(0,0); + } else { + kdDebug(29000) << "New image called without image => deleting!" << endl; + acquired = false; + resizeContents( 0,0 ); + } + + + kdDebug(29000) << "going to repaint!" << endl; + repaint( true ); + kdDebug(29000) << "repaint ok" << endl; +} + +QSize ImageCanvas::sizeHint() const +{ + return( QSize( 2, 2 )); +} + +void ImageCanvas::enableContextMenu( bool wantContextMenu ) +{ + if( wantContextMenu ) + { + if( ! m_contextMenu ) + { + m_contextMenu = new KPopupMenu(this, "IMG_CANVAS"); + + KContextMenuManager::insert( viewport(), m_contextMenu ); + } + } + else + { + /* remove all items */ + if( m_contextMenu ) m_contextMenu->clear(); + /* contextMenu is not deleted because there is no way to remove + * it from the contextMenuManager + */ + } + +} + +void ImageCanvas::handle_popup( int item ) +{ + if( item < ID_POP_ZOOM || item > ID_ORIG_SIZE ) return; + + if( ! image ) return; + ImgScaleDialog *zoomDia = 0; + + switch( item ) + { + case ID_POP_ZOOM: + + zoomDia = new ImgScaleDialog( this, getScaleFactor() ); + if( zoomDia->exec() ) + { + int sf = zoomDia->getSelected(); + setScaleKind(ZOOM); + setScaleFactor( sf ); + } + delete zoomDia; + zoomDia = 0; + break; + case ID_ORIG_SIZE: + setScaleKind( FIT_ORIG ); + break; + case ID_FIT_WIDTH: + setScaleKind( FIT_WIDTH ); + break; + case ID_FIT_HEIGHT: + setScaleKind( FIT_HEIGHT ); + break; + case ID_POP_CLOSE: + emit( closingRequested()); + break; + + default: break; + } + update_scaled_pixmap(); + repaint(); +} + + +/** + * Returns the selected rect in tenth of percent, not in absolute + * sizes, eg. 500 means 50.0 % of original width/height. + * That makes it easier to work with different scales and units + */ +QRect ImageCanvas::sel( void ) +{ + QRect retval; + retval.setCoords(0, 0, 0, 0); + + if( selected && image && selected->width()>MIN_AREA_WIDTH + && selected->height()>MIN_AREA_HEIGHT ) + { + /* Get the size in real image pixels */ + + // debug_rect( "PRE map", selected ); + QRect mapped = inv_scale_matrix.map( (const QRect) *selected ); + // debug_rect( "Postmap", &mapped ); + if( mapped.x() > 0 ) + retval.setLeft((int) (1000.0/( (double)image->width() / (double)mapped.x()))); + + if( mapped.y() > 0 ) + retval.setTop((int) (1000.0/( (double)image->height() / (double)mapped.y()))); + + if( mapped.width() > 0 ) + retval.setWidth((int) (1000.0/( (double)image->width() / (double)mapped.width()))); + + if( mapped.height() > 0 ) + retval.setHeight((int)(1000.0/( (double)image->height() / (double)mapped.height()))); + + } + // debug_rect( "sel() return", &retval ); + return( retval ); + +} + +bool ImageCanvas::selectedImage( QImage *retImg ) +{ + QRect r = sel(); + bool result = false; + + const QImage* entireImg = this->rootImage(); + + if( entireImg ) + { + QSize s = entireImg->size(); + + int x = (s.width() * r.x())/1000; + int y = (s.height() * r.y())/1000; + int w = (s.width() * r.width())/1000; + int h = (s.height() * r.height())/1000; + + if( w > 0 && h > 0 ) { + *retImg = entireImg->copy( x, y, w, h ); + result = true; + } + } + return(result); + +} + + +void ImageCanvas::drawContents( QPainter * p, int clipx, int clipy, int clipw, int cliph ) +{ + if( !pmScaled ) return; + int x1 = 0; + int y1 = 0; + + int x2 = pmScaled->width(); + int y2 = pmScaled->height(); + + if (x1 < clipx) x1=clipx; + if (y1 < clipy) y1=clipy; + if (x2 > clipx+clipw-1) x2=clipx+clipw-1; + if (y2 > clipy+cliph-1) y2=clipy+cliph-1; + + // Paint using the small coordinates... + // p->scale( used_xscaler, used_yscaler ); + // p->scale( used_xscaler, used_yscaler ); + if ( x2 >= x1 && y2 >= y1 ) { + p->drawPixmap( x1, y1, *pmScaled, x1, y1 ); //, clipw, cliph); + // p->setBrush( red ); + // p->drawRect( x1, y1, clipw, cliph ); + } + + // p->fillRect(x1, y1, x2-x1+1, y2-y1+1, red); + +} + +void ImageCanvas::timerEvent(QTimerEvent *) +{ + if(moving!=MOVE_NONE || !acquired ) return; + cr1++; + QPainter p(viewport()); + // p.setWindow( contentsX(), contentsY(), contentsWidth(), contentsHeight()); + drawAreaBorder(&p); +} + +void ImageCanvas::newRectSlot( QRect newSel ) +{ + QRect to_map; + QPainter p(viewport()); + drawAreaBorder(&p,TRUE); + selected->setWidth(0); + selected->setHeight(0); + + emit( noRect() ); + + if ( image ) + { + int rx, ry, rw, rh; + int w = image->width(); + int h = image->height(); + + kdDebug(29000) << "ImageCanvas: Image size is " << w << "x" << h << endl; + kdDebug(29000) << "ImageCanvas got selection Rect: W=" << newSel.width() << ", H=" << newSel.height() << endl; + // to_map.setWidth(static_cast<int>(w * newSel.width() / 1000.0)); + rw = static_cast<int>(w * newSel.width() / 1000.0); + rx = static_cast<int>(w * newSel.x() / 1000.0); + ry = static_cast<int>(h * newSel.y() / 1000.0); + rh = static_cast<int>(h * newSel.height() / 1000.0); + kdDebug(29000) << "ImageCanvas: scaled Height is " << rh << endl; + + to_map.setRect( rx, ry, rw, rh ); + + kdDebug(29000) << "ImageCanvas Selection: W=" << to_map.width() << " H=" << to_map.height() << endl; + *selected = scale_matrix.map( to_map ); + kdDebug(29000) << "ImageCanvas Selection: W=" << selected->width() << " H=" << selected->height() << endl; + emit( newRect( sel() )); + newRectSlot(); + } +} + + + +void ImageCanvas::newRectSlot( ) +{ + // printf( "Timer switched on !\n" ); + if( timer_id == 0 ) + timer_id = startTimer( 100 ); +} + +void ImageCanvas::noRectSlot( void ) +{ + // printf( "Timer switched off !\n" ); + if( timer_id ) { + killTimer( timer_id ); + timer_id = 0; + } + + if( selected ) + selected->setCoords( 0,0,0,0 ); +} + +void ImageCanvas::viewportMousePressEvent(QMouseEvent *ev) +{ + if( ! acquired || ! image ) return; + + if(ev->button()==LeftButton ) + { + + int cx = contentsX(), cy = contentsY(); + int x = lx = ev->x(),y = ly = ev->y(); + + int ix, iy; + scale_matrix.map( image->width(), image->height(), &ix, &iy ); + if( x > ix-cx || y > iy-cy ) return; + + if( moving == MOVE_NONE ) + { + QPainter p( viewport()); + drawAreaBorder(&p,TRUE); + moving = classifyPoint( x+cx ,y+cy); + + if(moving == MOVE_NONE) + { //Create new area + selected->setCoords( x+cx, y+cy, x+cx, y+cy ); + moving = MOVE_BOTTOM_RIGHT; + } + drawAreaBorder(&p); + } + } +} + + +void ImageCanvas::viewportMouseReleaseEvent(QMouseEvent *ev) +{ + if(ev->button()!=LeftButton || !acquired ) return; + + //// debug( "Mouse Release at %d/%d", ev->x(), ev->y()); + if(moving!=MOVE_NONE) { + QPainter p(viewport()); + drawAreaBorder(&p,TRUE); + moving = MOVE_NONE; + *selected = selected->normalize(); + + if(selected->width () < MIN_AREA_WIDTH || + selected->height() < MIN_AREA_HEIGHT) + { + selected->setWidth(0); + selected->setHeight(0); + emit noRect(); + return; + } + + drawAreaBorder(&p); + emit newRect( sel() ); + emit newRect( ); + } +} + + +void ImageCanvas::viewportMouseMoveEvent(QMouseEvent *ev) +{ + if( ! acquired || !image) return; + + static cursor_type ps = HREN; + int x = ev->x(), y = ev->y(); + int cx = contentsX(), cy = contentsY(); + + // debug("Mouse Coord x: %d, y: %d | cx: %d, cy: %d", x,y, cx, cy ); + // dont draw out of the scaled Pixmap + if( x < 0 ) x = 0; + int ix, iy; + scale_matrix.map( image->width(), image->height(), &ix, &iy ); + if( x >= ix ) return; + + if( y < 0 ) y = 0; + if( y >= iy ) return; + + // debug( "cx, cy: %dx%d, x,y: %d, %d", + // cx, cy, x, y ); + +#if 0 + if( moving == MOVE_NONE ) + moving = classifyPoint(x, y); +#endif + switch( moving!=MOVE_NONE ? moving:classifyPoint(x+cx,y+cy) ) { + case MOVE_NONE: + if(ps!=CROSS) { + viewport()->setCursor(crossCursor); + ps = CROSS; + } + break; + case MOVE_LEFT: + case MOVE_RIGHT: + if(ps!=HSIZE) { + viewport()->setCursor(sizeHorCursor); + ps = HSIZE; + } + break; + case MOVE_TOP: + case MOVE_BOTTOM: + if(ps!=VSIZE) { + viewport()->setCursor(sizeVerCursor); + ps = VSIZE; + } + break; + case MOVE_TOP_LEFT: + case MOVE_BOTTOM_RIGHT: + if(ps!=FDIAG) { + viewport()->setCursor(sizeFDiagCursor); + ps = FDIAG; + } + break; + case MOVE_TOP_RIGHT: + case MOVE_BOTTOM_LEFT: + if(ps!=BDIAG) { + viewport()->setCursor(sizeBDiagCursor); + ps = BDIAG; + } + break; + case MOVE_WHOLE: + if(ps!=ALL) { + viewport()->setCursor(sizeAllCursor); + ps = ALL; + } + } + //At ButtonRelease : normalize + clip + if( moving!=MOVE_NONE ) { + int mx, my; + QPainter p(viewport()); + drawAreaBorder(&p,TRUE); + switch(moving) { + case MOVE_NONE: //Just to make compiler happy + break; + case MOVE_TOP_LEFT: + selected->setLeft( x + cx ); + case MOVE_TOP: // fall through + selected->setTop( y + cy ); + break; + case MOVE_TOP_RIGHT: + selected->setTop( y + cy ); + case MOVE_RIGHT: // fall through + selected->setRight( x + cx ); + break; + case MOVE_BOTTOM_LEFT: + selected->setBottom( y + cy ); + case MOVE_LEFT: // fall through + selected->setLeft( x + cx ); + break; + case MOVE_BOTTOM_RIGHT: + selected->setRight( x + cx ); + case MOVE_BOTTOM: // fall through + selected->setBottom( y + cy ); + break; + case MOVE_WHOLE: + if( selected ) + { + // lx is the Last x-Koord from the run before (global) + mx = x-lx; my = y-ly; + /* Check if rectangle would run out of the image on right and bottom */ + if( selected->x()+ selected->width()+mx >= ix-cx ) + { + mx = ix -cx - selected->width() - selected->x(); + kdDebug(29000) << "runs out !" << endl; + } + if( selected->y()+ selected->height()+my >= iy-cy ) + { + my = iy -cy - selected->height() - selected->y(); + kdDebug(29000) << "runs out !" << endl; + } + + /* Check if rectangle would run out of the image on left and top */ + if( selected->x() +mx < 0 ) + mx = -selected->x(); + if( selected->y()+ +my < 0 ) + my = -selected->y(); + + x = mx+lx; y = my+ly; + + selected->moveBy( mx, my ); + + } + } + drawAreaBorder(&p); + lx = x; + ly = y; + } +} + + +void ImageCanvas::setScaleFactor( int i ) +{ + kdDebug(29000) << "Setting Scalefactor to " << i << endl; + scale_factor = i; + if( i == 0 ){ + kdDebug(29000) << "Setting Dynamic Scaling!" << endl; + setScaleKind(DYNAMIC); + } + update_scaled_pixmap(); +} + + +void ImageCanvas::resizeEvent( QResizeEvent * event ) +{ + QScrollView::resizeEvent( event ); + update_scaled_pixmap(); + +} + +void ImageCanvas::update_scaled_pixmap( void ) +{ + resizeContents( 0,0 ); + updateScrollBars(); + if( !pmScaled || !image) + { // debug( "Pixmap px is null in Update_scaled" ); + return; + } + + QApplication::setOverrideCursor(waitCursor); + + kdDebug(28000) << "Updating scaled_pixmap" << endl; + if( scaleKind() == DYNAMIC ) + kdDebug(28000) << "Scaling DYNAMIC" << endl; + QSize noSBSize( visibleWidth(), visibleHeight()); + const int sbWidth = kapp->style().pixelMetric( QStyle::PM_ScrollBarExtent ); + + // if( verticalScrollBar()->visible() ) noSBSize.width()+=sbWidth; + // if( horizontalScrollBar()->visible() ) noSBSize.height()+=sbWidth; + + switch( scaleKind() ) + { + case DYNAMIC: + // do scaling to window-size + used_yscaler = ((double)viewport()-> height()) / ((double)image->height()); + used_xscaler = ((double)viewport()-> width()) / ((double)image->width()); + scale_factor = 0; + break; + case FIT_ORIG: + used_yscaler = used_xscaler = 1.0; + scale_factor = 100; + break; + case FIT_WIDTH: + used_xscaler = used_yscaler = double(noSBSize.width()) / double(image->width()); + if( used_xscaler * image->height() >= noSBSize.height() ) + { + /* substract for scrollbar */ + used_xscaler = used_yscaler = double(noSBSize.width() - sbWidth) / + double(image->width()); + kdDebug(29000) << "FIT WIDTH scrollbar to substract: " << sbWidth << endl; + } + scale_factor = 100*used_xscaler; + break; + case FIT_HEIGHT: + used_yscaler = used_xscaler = double(noSBSize.height())/double(image->height()); + + // scale = int(100.0 * noSBSize.height() / image->height()); + if( used_xscaler * image->width() >= noSBSize.width() ) + { + /* substract for scrollbar */ + used_xscaler = used_yscaler = double(noSBSize.height() - sbWidth) / + double(image->height()); + + kdDebug(29000) << "FIT HEIGHT scrollbar to substract: " << sbWidth << endl; + // scale = int(100.0*(noSBSize.height() -sbWidth) / image->height()); + } + scale_factor = 100*used_xscaler; + + break; + case ZOOM: + used_xscaler = used_yscaler = double(getScaleFactor())/100.0; + scale_factor = 100*used_xscaler; + break; + default: + break; + } + + // reconvert the selection to orig size + if( selected ) { + *selected = inv_scale_matrix.map( (const QRect) *selected ); + } + + scale_matrix.reset(); // transformation matrix + inv_scale_matrix.reset(); + + + if( scaleKind() == DYNAMIC && maintain_aspect ) { + // printf( "Skaler: x: %f, y: %f\n", x_scaler, y_scaler ); + used_xscaler = used_yscaler < used_xscaler ? + used_yscaler : used_xscaler; + used_yscaler = used_xscaler; + } + + scale_matrix.scale( used_xscaler, used_yscaler ); // define scale factors + inv_scale_matrix = scale_matrix.invert(); // for redraw of selection + + if( selected ) { + *selected = scale_matrix.map( (const QRect )*selected ); + } + +#ifdef USE_KPIXMAPIO + *pmScaled = pixIO.convertToPixmap(*image); +#else + pmScaled->convertFromImage( *image ); +#endif + + *pmScaled = pmScaled->xForm( scale_matrix ); // create scaled pixmap + + /* Resizing to 0,0 never may be dropped, otherwise there are problems + * with redrawing of new images. + */ + resizeContents( static_cast<int>(image->width() * used_xscaler), + static_cast<int>(image->height() * used_yscaler ) ); + + QApplication::restoreOverrideCursor(); +} + + +void ImageCanvas::drawHAreaBorder(QPainter &p,int x1,int x2,int y,int r) +{ + if( ! acquired || !image ) return; + + if(moving!=MOVE_NONE) cr2 = 0; + int inc = 1; + int cx = contentsX(), cy = contentsY(); + if(x2 < x1) inc = -1; + + if(!r) { + if(cr2 & 4) p.setPen(black); + else p.setPen(white); + } else if(!acquired) p.setPen(QPen(QColor(150,150,150))); + + for(;;) { + if(rect().contains(QPoint(x1,y))) { + if( r && acquired ) { + int re_x1, re_y; + inv_scale_matrix.map( x1+cx, y+cy, &re_x1, &re_y ); + re_x1 = MIN( image->width()-1, re_x1 ); + re_y = MIN( image->height()-1, re_y ); + + p.setPen( QPen( QColor( image->pixel(re_x1, re_y)))); + } + p.drawPoint(x1,y); + } + if(!r) { + cr2++; + cr2 &= 7; + if(!(cr2&3)) { + if(cr2&4) p.setPen(black); + else p.setPen(white); + } + } + if(x1==x2) break; + x1 += inc; + } + +} + +void ImageCanvas::drawVAreaBorder(QPainter &p, int x, int y1, int y2, int r ) +{ + if( ! acquired || !image ) return; + if( moving!=MOVE_NONE ) cr2 = 0; + int inc = 1; + if( y2 < y1 ) inc = -1; + + int cx = contentsX(), cy = contentsY(); + + + if( !r ) { + if( cr2 & 4 ) p.setPen(black); + else + p.setPen(white); + } else + if( !acquired ) p.setPen( QPen( QColor(150,150,150) ) ); + + for(;;) { + if(rect().contains( QPoint(x,y1) )) { + if( r && acquired ) { + int re_y1, re_x; + inv_scale_matrix.map( x+cx, y1+cy, &re_x, &re_y1 ); + re_x = MIN( image->width()-1, re_x ); + re_y1 = MIN( image->height()-1, re_y1 ); + + p.setPen( QPen( QColor( image->pixel( re_x, re_y1) ))); + } + p.drawPoint(x,y1); + } + + if(!r) { + cr2++; + cr2 &= 7; + if(!(cr2&3)) { + if(cr2&4) p.setPen(black); + else p.setPen(white); + } + } + if(y1==y2) break; + y1 += inc; + } + +} + +void ImageCanvas::drawAreaBorder(QPainter *p,int r ) +{ + if(selected->isNull()) return; + + cr2 = cr1; + int xinc = 1; + if( selected->right() < selected->left()) xinc = -1; + int yinc = 1; + if( selected->bottom() < selected->top()) yinc = -1; + + if( selected->width() ) + drawHAreaBorder(*p, + selected->left() - contentsX(), + selected->right()- contentsX(), + selected->top() - contentsY(), r ); + if( selected->height() ) { + drawVAreaBorder(*p, + selected->right() - contentsX(), + selected->top()- contentsY()+yinc, + selected->bottom()- contentsY(),r); + if(selected->width()) { + drawHAreaBorder(*p, + selected->right()-xinc- contentsX(), + selected->left()- contentsX(), + selected->bottom()- contentsY(),r); + drawVAreaBorder(*p, + selected->left()- contentsX(), + selected->bottom()-yinc- contentsY(), + selected->top()- contentsY()+yinc,r); + } + } +} + +// x and y come as real pixmap-coords, not contents-coords +preview_state ImageCanvas::classifyPoint(int x,int y) +{ + if(selected->isEmpty()) return MOVE_NONE; + + QRect a = selected->normalize(); + + int top = 0,left = 0,right = 0,bottom = 0; + int lx = a.left()-x, rx = x-a.right(); + int ty = a.top()-y, by = y-a.bottom(); + + if( a.width() > delta*2+2 ) + lx = abs(lx), rx = abs(rx); + + if(a.height()>delta*2+2) + ty = abs(ty), by = abs(by); + + if( lx>=0 && lx<=delta ) left++; + if( rx>=0 && rx<=delta ) right++; + if( ty>=0 && ty<=delta ) top++; + if( by>=0 && by<=delta ) bottom++; + if( y>=a.top() &&y<=a.bottom() ) { + if(left) { + if(top) return MOVE_TOP_LEFT; + if(bottom) return MOVE_BOTTOM_LEFT; + return MOVE_LEFT; + } + if(right) { + if(top) return MOVE_TOP_RIGHT; + if(bottom) return MOVE_BOTTOM_RIGHT; + return MOVE_RIGHT; + } + } + if(x>=a.left()&&x<=a.right()) { + if(top) return MOVE_TOP; + if(bottom) return MOVE_BOTTOM; + if(selected->contains(QPoint(x,y))) return MOVE_WHOLE; + } + return MOVE_NONE; +} + + +int ImageCanvas::getBrightness() const +{ + return brightness; +} + +int ImageCanvas::getContrast() const +{ + return contrast; +} + +int ImageCanvas::getGamma() const +{ + return gamma; +} + +int ImageCanvas::getScaleFactor() const +{ + return( scale_factor ); +} + +const QImage *ImageCanvas::rootImage( ) +{ + return( image ); +} + +void ImageCanvas::setReadOnly( bool ro ) +{ + d->readOnly = ro; + emit( imageReadOnly(ro) ); +} + +bool ImageCanvas::readOnly() +{ + return d->readOnly; +} + +void ImageCanvas::setBrightness(int b) +{ + brightness = b; +} + +void ImageCanvas::setContrast(int c) +{ + contrast = c; +} + +void ImageCanvas::setGamma(int c) +{ + gamma = c; +} + +void ImageCanvas::setKeepZoom( bool k ) +{ + d->keepZoom = k; +} + +ImageCanvas::ScaleKinds ImageCanvas::scaleKind() +{ + if( d->scaleKind == UNSPEC ) + return defaultScaleKind(); + else + return d->scaleKind; +} + +ImageCanvas::ScaleKinds ImageCanvas::defaultScaleKind() +{ + return d->defaultScaleKind; +} + +void ImageCanvas::setScaleKind( ScaleKinds k ) +{ + if( k == d->scaleKind ) return; // no change, return + d->scaleKind = k; + + emit scalingChanged(scaleKindString()); +} + +void ImageCanvas::setDefaultScaleKind( ScaleKinds k ) +{ + d->defaultScaleKind = k; +} + +const QString ImageCanvas::imageInfoString( int w, int h, int d ) +{ + if( w == 0 && h == 0 && d == 0 ) + { + if( image ) + { + w = image->width(); + h = image->height(); + d = image->depth(); + } + else + return QString("-"); + } + return i18n("%1x%2 pixel, %3 bit").arg(w).arg(h).arg(d); +} + + +const QString ImageCanvas::scaleKindString() +{ + switch( scaleKind() ) + { + case DYNAMIC: + return i18n("Fit window best"); + break; + case FIT_ORIG: + return i18n("Original size"); + break; + case FIT_WIDTH: + return i18n("Fit Width"); + break; + case FIT_HEIGHT: + return i18n("Fit Height"); + break; + case ZOOM: + return i18n("Zoom to %1 %%").arg( QString::number(getScaleFactor())); + break; + default: + return i18n("Unknown scaling!"); + break; + } +} + + +int ImageCanvas::highlight( const QRect& rect, const QPen& pen, const QBrush&, bool ensureVis ) +{ + QRect saveRect; + saveRect.setRect( rect.x()-2, rect.y()-2, rect.width()+4, rect.height()+4 ); + d->highlightRects.append( saveRect ); + + int idx = d->highlightRects.findIndex(saveRect); + + QRect targetRect = scale_matrix.map( rect ); + + QPainter p( pmScaled ); + + p.setPen(pen); + p.drawLine( targetRect.x(), targetRect.y()+targetRect.height(), + targetRect.x()+targetRect.width(), targetRect.y()+targetRect.height() ); + + p.flush(); + updateContents(targetRect.x()-1, targetRect.y()-1, + targetRect.width()+2, targetRect.height()+2 ); + + if( ensureVis ) + { + QPoint p = targetRect.center(); + ensureVisible( p.x(), p.y(), 10+targetRect.width()/2, 10+targetRect.height()/2 ); + } + + return idx; +} + +void ImageCanvas::removeHighlight( int idx ) +{ + if( (unsigned) idx >= d->highlightRects.count() ) + { + kdDebug(28000) << "removeHighlight: Not a valid index" << endl; + return; + } + + /* take the rectangle from the stored highlight rects and map it to the viewer scaling */ + QRect r = d->highlightRects[idx]; + d->highlightRects.remove(r); + QRect targetRect = scale_matrix.map( r ); + + /* create a small pixmap with a copy of the region in question of the original image */ + QPixmap origPix; + origPix.convertFromImage( image->copy(r) ); + /* and scale it */ + QPixmap scaledPix = origPix.xForm( scale_matrix ); + /* and finally draw it */ + QPainter p( pmScaled ); + p.drawPixmap( targetRect, scaledPix ); + p.flush(); + + /* update the viewers contents */ + updateContents(targetRect.x()-1, targetRect.y()-1, + targetRect.width()+2, targetRect.height()+2 ); + + +} + + +#include "img_canvas.moc" |