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List:       kde-commits
Subject:    koffice/lib/kofficeui
From:       Thorsten Zachmann <t.zachmann () zagge ! de>
Date:       2005-10-31 12:30:11
Message-ID: 1130761811.423107.15329.nullmailer () svn ! kde ! org
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SVN commit 476058 by zachmann:

o Added methodes for snapping.
  This might change if I find better ways.


 M  +113 -0    koGuides.cpp  
 M  +24 -0     koGuides.h  


--- trunk/koffice/lib/kofficeui/koGuides.cpp #476057:476058
@@ -29,6 +29,7 @@
 
 #include <koDocument.h>
 #include <koPoint.h>
+#include <koRect.h>
 #include <koView.h>
 #include <kozoomhandler.h>
 
@@ -342,6 +343,118 @@
 }
 
 
+KoPoint KoGuides::snapToGuideLines( KoRect &rect, int snap )
+{
+    KoPoint diff( 0, 0 );
+    QValueList<double> hGuideLines;
+    QValueList<double> vGuideLines;
+    getGuideLines( hGuideLines, vGuideLines );
+
+    QValueList<double>::const_iterator it( vGuideLines.begin() );
+    for ( ; it != vGuideLines.end(); ++it )
+    {
+        double tmp = rect.left() - *it;
+        if ( QABS( tmp ) < m_zoomHandler->unzoomItX( snap ) )
+        {
+            diff.setX( tmp );
+            break;
+        }
+        tmp = rect.right() - *it;
+        if ( QABS( tmp ) < m_zoomHandler->unzoomItX( snap ) )
+        {
+            diff.setX( tmp );
+            break;
+        }
+    }
+
+    it = hGuideLines.begin();
+    for ( ; it != hGuideLines.end(); ++it )
+    {
+        double tmp = rect.top() - *it;
+        if ( QABS( tmp ) < m_zoomHandler->unzoomItY( snap ) )
+        {
+            diff.setY( tmp );
+            break;
+        }
+        tmp = rect.bottom() - *it;
+        if ( QABS( tmp ) < m_zoomHandler->unzoomItY( snap ) )
+        {
+            diff.setY( tmp );
+            break;
+        }
+    }
+    return diff;
+}
+
+KoPoint KoGuides::diffGuide( KoRect &rect, double diffx, double diffy )
+{
+    KoPoint move( 0, 0 );
+    QValueList<double> horizHelplines;
+    QValueList<double> vertHelplines;
+    getGuideLines( horizHelplines, vertHelplines );
+
+    QValueList<double>::const_iterator it( vertHelplines.begin() );
+    for ( ; it != vertHelplines.end(); ++it )
+    {
+        double movexl = *it - rect.left();
+        double movexr = *it - rect.right();
+        if ( diffx > 0 )
+        {
+            if ( diffx > movexl && movexl > move.x() )
+            {
+                move.setX( movexl );
+            }
+            if ( diffx > movexr && movexr > move.x() )
+            {
+                move.setX( movexr );
+            }
+        }
+        else
+        {
+            if ( diffx < movexl && movexl < move.x() )
+            {
+                move.setX( movexl );
+            }
+            if ( diffx < movexr && movexr < move.x() )
+            {
+                move.setX( movexr );
+            }
+        }
+    }
+
+    it = horizHelplines.begin();
+    for ( ; it != horizHelplines.end(); ++it )
+    {
+        double moveyl = *it - rect.top();
+        double moveyr = *it - rect.bottom();
+        if ( diffy > 0 )
+        {
+            if ( diffy > moveyl && moveyl > move.y() )
+            {
+                move.setY( moveyl );
+            }
+            if ( diffy > moveyr && moveyr > move.y() )
+            {
+                move.setY( moveyr );
+            }
+        }
+        else
+        {
+            if ( diffy < moveyl && moveyl < move.y() )
+            {
+                move.setY( moveyl );
+            }
+            if ( diffy < moveyr && moveyr < move.y() )
+            {
+                move.setY( moveyr );
+            }
+        }
+    }
+
+    return move;
+}
+
+
 void KoGuides::moveGuide( const QPoint &pos, bool horizontal, int rulerWidth )
 {
     int x = pos.x() - rulerWidth;
--- trunk/koffice/lib/kofficeui/koGuides.h #476057:476058
@@ -28,6 +28,7 @@
 
 class QPaintDevice;
 class KoPoint;
+class KoRect;
 class KoView;
 class KoZoomHandler;
 
@@ -128,6 +129,29 @@
      */
     void getGuideLines( QValueList<double> &horizontalPos, QValueList<double> &verticalPos ) const;
 
+    /**
+     * @brief Snap rect to guidelines
+     *
+     * This looks fo a guide which is in reach for the guide as defined in snap.
+     *
+     * @param rect the rect which should be snapped
+     * @param snap the distance the guide should snap
+     *
+     * @return the distance to the guide or ( 0, 0 ) if there is no guide to snap to.
+     */
+    KoPoint snapToGuideLines( KoRect &rect, int snap );
+
+    /**
+     * @brief Find the next guide distance to snap to
+     *
+     * @param rect the rect which should be snapped
+     * @param diffx The range in x distance in which the guide has to be.
+     * @param diffy The range in y distance in which the guide has to be.
+     *
+     * @return the distance to the guide or ( 0, 0 ) if there is no guide to snap to.
+     */
+    KoPoint diffGuide( KoRect &rect, double diffx, double diffy );
+
 public slots:
     /**
      * @brief Move Guide
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