rule_based_renderer.diff
| src/core/symbology-ng/qgsrulebasedrendererv2.h (Arbeitskopie) | ||
|---|---|---|
| 102 | 102 |
//! store renderer info to XML element |
| 103 | 103 |
virtual QDomElement save( QDomDocument& doc ); |
| 104 | 104 | |
| 105 |
//! return a list of symbology items for the legend |
|
| 106 |
virtual QgsLegendSymbologyList legendSymbologyItems( QSize iconSize ); |
|
| 107 | ||
| 108 |
//! return a list of item text / symbol |
|
| 109 |
//! @note: this method was added in version 1.5 |
|
| 110 |
virtual QgsLegendSymbolList legendSymbolItems(); |
|
| 111 | ||
| 105 | 112 |
///// |
| 106 | 113 | |
| 107 | 114 |
//! return the total number of rules |
| src/core/symbology-ng/qgsrulebasedrendererv2.cpp (Arbeitskopie) | ||
|---|---|---|
| 126 | 126 | |
| 127 | 127 |
QgsSymbolV2* QgsRuleBasedRendererV2::symbolForFeature( QgsFeature& feature ) |
| 128 | 128 |
{
|
| 129 |
return mCurrentSymbol; |
|
| 129 |
//return first matching rule (though sometimes not correct if several rules apply) |
|
| 130 |
for ( QList<Rule*>::iterator it = mCurrentRules.begin(); it != mCurrentRules.end(); ++it ) |
|
| 131 |
{
|
|
| 132 |
Rule* rule = *it; |
|
| 133 |
if ( rule->isFilterOK( mCurrentFields, feature ) ) |
|
| 134 |
{
|
|
| 135 |
return rule->symbol(); |
|
| 136 |
} |
|
| 137 |
} |
|
| 130 | 138 |
} |
| 131 | 139 | |
| 132 | 140 |
void QgsRuleBasedRendererV2::renderFeature( QgsFeature& feature, |
| ... | ... | |
| 198 | 206 |
QgsSymbolV2* s = mDefaultSymbol->clone(); |
| 199 | 207 |
QgsRuleBasedRendererV2* r = new QgsRuleBasedRendererV2( s ); |
| 200 | 208 |
r->mRules = mRules; |
| 209 |
r->setUsingSymbolLevels( usingSymbolLevels() ); |
|
| 201 | 210 |
return r; |
| 202 | 211 |
} |
| 203 | 212 | |
| ... | ... | |
| 243 | 252 |
return rendererElem; |
| 244 | 253 |
} |
| 245 | 254 | |
| 255 |
QgsLegendSymbologyList QgsRuleBasedRendererV2::legendSymbologyItems( QSize iconSize ) |
|
| 256 |
{
|
|
| 257 |
QgsLegendSymbologyList lst; |
|
| 258 |
for ( QList<Rule>::iterator it = mRules.begin(); it != mRules.end(); ++it ) |
|
| 259 |
{
|
|
| 260 |
QPixmap pix = QgsSymbolLayerV2Utils::symbolPreviewPixmap( it->symbol(), iconSize ); |
|
| 261 |
lst << qMakePair( it->filterExpression(), pix ); |
|
| 262 |
} |
|
| 263 |
return lst; |
|
| 264 |
} |
|
| 246 | 265 | |
| 266 |
QgsLegendSymbolList QgsRuleBasedRendererV2::legendSymbolItems() |
|
| 267 |
{
|
|
| 268 |
QgsLegendSymbolList lst; |
|
| 269 |
for ( QList<Rule>::iterator it = mRules.begin(); it != mRules.end(); ++it ) |
|
| 270 |
{
|
|
| 271 |
lst << qMakePair( it->filterExpression(), it->symbol() ); |
|
| 272 |
} |
|
| 273 |
return lst; |
|
| 274 |
} |
|
| 275 | ||
| 276 | ||
| 247 | 277 |
QgsFeatureRendererV2* QgsRuleBasedRendererV2::create( QDomElement& element ) |
| 248 | 278 |
{
|
| 249 | 279 |
// load symbols |
| ... | ... | |
| 355 | 385 | |
| 356 | 386 |
QList<QgsRuleBasedRendererV2::Rule> QgsRuleBasedRendererV2::refineRuleScales( QgsRuleBasedRendererV2::Rule& initialRule, QList<int> scales ) |
| 357 | 387 |
{
|
| 358 |
qSort(scales); // make sure the scales are in ascending order
|
|
| 388 |
qSort( scales ); // make sure the scales are in ascending order
|
|
| 359 | 389 |
QList<Rule> rules; |
| 360 | 390 |
int oldScale = initialRule.scaleMinDenom(); |
| 361 | 391 |
int maxDenom = initialRule.scaleMaxDenom(); |