[raster] fix singleband pseudo-color crash on single-color color presets ramp

nirvn · nirvn · commit 6009f5a41d6f · 2016-12-03T14:12:30.000+07:00
diff --git a/src/gui/raster/qgssinglebandpseudocolorrendererwidget.cpp b/src/gui/raster/qgssinglebandpseudocolorrendererwidget.cpp
@@ -336,7 +336,7 @@ void QgsSingleBandPseudoColorRendererWidget::classify()
 
   if ( mClassificationModeComboBox->currentData().toInt() == Continuous )
   {
-    if ( colorRamp.data() )
+    if ( colorRamp.data() &&  colorRamp->count() > 1 )
     {
       numberOfEntries = colorRamp->count();
       entryValues.reserve( numberOfEntries );
@@ -450,7 +450,7 @@ void QgsSingleBandPseudoColorRendererWidget::classify()
       }
     }
 
-    if ( !colorRamp.data() )
+    if ( !colorRamp.data() || colorRamp->count() == 1 )
     {
       //hard code color range from blue -> red (previous default)
       int colorDiff = 0;

Original file line number	Diff line number	Diff line change
`@@ -336,7 +336,7 @@ void QgsSingleBandPseudoColorRendererWidget::classify()`
`336`	`336`
`337`	`337`	`if ( mClassificationModeComboBox->currentData().toInt() == Continuous )`
`338`	`338`	`{`
`339`		`- if ( colorRamp.data() )`
	`339`	`+ if ( colorRamp.data() && colorRamp->count() > 1 )`
`340`	`340`	`{`
`341`	`341`	`numberOfEntries = colorRamp->count();`
`342`	`342`	`entryValues.reserve( numberOfEntries );`
`@@ -450,7 +450,7 @@ void QgsSingleBandPseudoColorRendererWidget::classify()`
`450`	`450`	`}`
`451`	`451`	`}`
`452`	`452`
`453`		`- if ( !colorRamp.data() )`
	`453`	`+ if ( !colorRamp.data() \|\| colorRamp->count() == 1 )`
`454`	`454`	`{`
`455`	`455`	`//hard code color range from blue -> red (previous default)`
`456`	`456`	`int colorDiff = 0;`