Created attachment 12291 [details]
kst exported png showing axis numbers cut off

A png showing some of the axis numbers being partially cut off when axis
supression is turned on.  Specifically the 2.005 on T_m3 and the 1.905 on T_m4
are nearly cut in half.  Also the 1.88 of T_m4 is 'dangerously close' to the
3.85 of T_lhe_filt.

SVN commit 482138 by arwalker:

BUG:111178 Prevent labels from overlapping when axis suppression is used. At present this only applies for non-rotated labels. This also fixes a bug in the border positions for some cases.

 M  +55 -34    kst2dplot.cpp  


--- trunk/extragear/graphics/kst/kst/kst2dplot.cpp #482137:482138
@@ -1917,7 +1917,7 @@
 
   // calculate the top border
   if (_suppressTop) {
-    ytop_bdr_px = 0;
+    ytop_bdr_px = 0.0;
   } else {
     ytop_bdr_px = 1.1 * _topLabel->size().height(); // height include super/subscripts
 
@@ -1926,14 +1926,14 @@
       ytop_bdr_px += tpx.oppMaxHeight;
     }
 
-    if (ytop_bdr_px < 1) {
+    if (ytop_bdr_px < 1.0) {
       ytop_bdr_px = 0.5 * _xTickLabel->lineSpacing();
     }
   }
 
   // calculate the bottom border
   if (_suppressBottom) {
-    ybot_bdr_px = 0;
+    ybot_bdr_px = 0.0;
   } else {
     ybot_bdr_px  = tpx.maxHeight;
     ybot_bdr_px += _xLabel->lineSpacing();
@@ -1943,19 +1943,19 @@
   genAxisTickLabels(tpy, y_min, y_max, _yLog, _yAxisInterpretation, _yAxisDisplay, false, _isYAxisInterpreted, _yOffsetMode);
   
   if (_suppressLeft) {
-    xleft_bdr_px = 0;    
+    xleft_bdr_px = 0.0;    
   } else {
     xleft_bdr_px  = tpy.maxWidth;
-    xleft_bdr_px += 5 * _yLabel->lineSpacing() / 4;
-    xleft_bdr_px += _yTickLabel->lineSpacing() / 4;
+    xleft_bdr_px += 5.0 * _yLabel->lineSpacing() / 4.0;
+    xleft_bdr_px += _yTickLabel->lineSpacing() / 4.0;
     //printf("mw: %g yls: %d lfls: %d xlbp: %g\n", tpy.maxWidth, _yLabel->lineSpacing(), _tickLabel->lineSpacing(), xleft_bdr_px);
   }
 
   // calculate the right border
   if (_suppressRight) {
-    xright_bdr_px = 0;  
+    xright_bdr_px = 0.0;  
   } else {
-    xright_bdr_px = x_px / 30;
+    xright_bdr_px = x_px / 30.0;
     // if right axis is transformed, leave space for the numbers
     if (_yTransformed) {
       xright_bdr_px += tpy.oppMaxWidth;
@@ -2019,6 +2019,19 @@
     xright_bdr_px += 2.0 * ytick_len_px;
   }
 
+  if (_suppressLeft) {
+    xleft_bdr_px = 0.0;    
+  }
+  if (_suppressRight) {
+    xright_bdr_px = 0.0;    
+  }  
+  if (_suppressTop) {
+    ytop_bdr_px = 0.0;    
+  }
+  if (_suppressBottom) {
+    ybot_bdr_px = 0.0;    
+  }  
+  
   // round off all the border values
   xleft_bdr_px  = ceil(xleft_bdr_px);
   xright_bdr_px = ceil(xright_bdr_px);
@@ -5496,43 +5509,46 @@
         xTickPos = x_px - xright_bdr_px - (xTickPos - xleft_bdr_px);
       }
 
+      p.save();
       _xTickLabel->setText(tpx.labels[i - tpx.iLo]);
       if (_xTickLabel->rotation() == 0) {
-        p.save();
-        p.translate(d2i(xTickPos) - _xTickLabel->size().width() / 2, yTickPos);
-        _xTickLabel->paint(p);
-        p.restore();
+        if (!((_suppressLeft  && d2i(xTickPos) - _xTickLabel->size().width() / 2 < xleft_bdr_px ) || 
+              (_suppressRight && d2i(xTickPos) - _xTickLabel->size().width() / 2 > x_px - xright_bdr_px ) ) ) {
+          p.translate(d2i(xTickPos) - _xTickLabel->size().width() / 2, yTickPos);
+          _xTickLabel->paint(p);
+        }
       } else if (_xTickLabel->rotation() > 0) {
-        p.save();
         p.translate(xTickPos-0.5*_xTickLabel->lineSpacing()*sin(_xTickLabel->rotation()*M_PI/180.0), yTickPos);
         _xTickLabel->paint(p);
-        p.restore();
       } else if (_xTickLabel->rotation() < 0) {
-        p.save();
         p.translate(xTickPos - _xTickLabel->size().width()-0.5*_xTickLabel->lineSpacing()*sin(_xTickLabel->rotation()*M_PI/180.0), yTickPos);
         _xTickLabel->paint(p);
-        p.restore();
       }
+      p.restore();
     }
   }
 
   // if top axis is transformed, plot top axis numbers as well
   // FIXME: inefficient.  We keep reparsing and re-rendering tpx.oppLabels[.]
   if (_xTransformed && !_suppressTop) {
+    double xTickPos;
     int yTopTickPos = d2i(ytop_bdr_px);
     if (xTicksOutPlot()) {
       yTopTickPos -= d2i(2.0 * xtick_len_px);
     }
     for (i = tpx.iLo; i < tpx.iHi; i++) {
-      double xTickPos = x_orig_px + (double)i * xtick_px;
+      xTickPos = x_orig_px + (double)i * xtick_px;
       if (_xReversed) {
         xTickPos = x_px - xright_bdr_px - (xTickPos - xleft_bdr_px);
       }
       _xTickLabel->setText(tpx.oppLabels[i - tpx.iLo]);
-      p.save();
-      p.translate(d2i(xTickPos) - _xTickLabel->size().width() / 2, yTopTickPos - _xTickLabel->size().height());
-      _xTickLabel->paint(p);
-      p.restore();
+      if (!((_suppressLeft  && d2i(xTickPos) - _xTickLabel->size().width() / 2 < xleft_bdr_px ) || 
+            (_suppressRight && d2i(xTickPos) - _xTickLabel->size().width() / 2 > x_px - xright_bdr_px ) ) ) {
+        p.save();
+        p.translate(d2i(xTickPos) - _xTickLabel->size().width() / 2, yTopTickPos - _xTickLabel->size().height());
+        _xTickLabel->paint(p);
+        p.restore();
+      }
     }
   }
 
@@ -5562,41 +5578,46 @@
         yTickPos = y_px - ybot_bdr_px - (yTickPos - ytop_bdr_px);
       }
       _yTickLabel->setText(tpy.labels[i - tpy.iLo]);
+      
       p.save();
-      
       if (_yTickLabel->rotation() == 0 || _yTickLabel->rotation() <-89 || _yTickLabel->rotation() > 89) {
-        p.translate(xTickPos - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->size().height() / 2);
-        _yTickLabel->paint(p);
-        p.restore();
+        if (!((_suppressBottom && d2i(yTickPos) + _yTickLabel->size().height() / 2 > y_px - ybot_bdr_px ) || 
+              (_suppressTop    && d2i(yTickPos) - _yTickLabel->size().height() / 2 < ytop_bdr_px ) ) ) {
+          p.translate(d2i(xTickPos) - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->size().height() / 2);
+          _yTickLabel->paint(p);
+        }
       } else if (_yTickLabel->rotation() < 0) {
-        p.translate(xTickPos - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->lineSpacing()/2);
+        p.translate(d2i(xTickPos) - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->lineSpacing()/2);
         _yTickLabel->paint(p);
-        p.restore();
       } else if (_yTickLabel->rotation() > 0) {
-        p.translate(xTickPos - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->size().height() + _yTickLabel->lineSpacing()/2);
+        p.translate(d2i(xTickPos) - _yTickLabel->size().width(), d2i(yTickPos) - _yTickLabel->size().height() + _yTickLabel->lineSpacing()/2);
         _yTickLabel->paint(p);
-        p.restore();
       }
+      p.restore();
     }
   }
   
   // if right axis is transformed, plot right axis numbers as well
   if (_yTransformed && !_suppressRight) {
+    double yTickPos;
     int xTopTickPos = d2i(x_px - xright_bdr_px + _yTickLabel->lineSpacing()*0.15);
     if (yTicksOutPlot()) {
       xTopTickPos += d2i(2.0 * ytick_len_px);
     }
     // FIXME: inefficient.  We keep reparsing and re-rendering tpy.oppLabels[.]
     for (i = tpy.iLo; i < tpy.iHi; i++) {
-      double yTickPos = y_orig_px - (double)i * ytick_px;
+      yTickPos = y_orig_px - (double)i * ytick_px;
       if (_yReversed) {
         yTickPos = y_px - ybot_bdr_px - (yTickPos - ytop_bdr_px);
       }
       _yTickLabel->setText(tpy.oppLabels[i - tpy.iLo]);
-      p.save();
-      p.translate(xTopTickPos, d2i(yTickPos) - _yTickLabel->size().height() / 2);
-      _yTickLabel->paint(p);
-      p.restore();
+      if (!((_suppressBottom && d2i(yTickPos) + _yTickLabel->size().height() / 2 > y_px - ybot_bdr_px ) || 
+            (_suppressTop    && d2i(yTickPos) - _yTickLabel->size().height() / 2 < ytop_bdr_px ) ) ) {
+        p.save();
+        p.translate(xTopTickPos, d2i(yTickPos) - _yTickLabel->size().height() / 2);
+        _yTickLabel->paint(p);
+        p.restore();
+      }
     }
   }
 }