-
-
Notifications
You must be signed in to change notification settings - Fork 3k
/
qgslayoutitemattributetable.h
387 lines (320 loc) · 13.1 KB
/
qgslayoutitemattributetable.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
/***************************************************************************
qgslayoutitemattributetable.h
---------------------------
begin : November 2017
copyright : (C) 2017 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSLAYOUTITEMATTRIBUTETABLE_H
#define QGSLAYOUTITEMATTRIBUTETABLE_H
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgslayouttable.h"
#include "qgsvectorlayerref.h"
class QgsLayoutItemMap;
class QgsVectorLayer;
/**
* \ingroup core
* A layout table subclass that displays attributes from a vector layer.
* \since QGIS 3.0
*/
class CORE_EXPORT QgsLayoutItemAttributeTable: public QgsLayoutTable
{
Q_OBJECT
public:
/**
* Specifies the content source for the attribute table
*/
enum ContentSource
{
LayerAttributes = 0, //!< Table shows attributes from features in a vector layer
AtlasFeature, //!< Table shows attributes from the current atlas feature
RelationChildren //!< Table shows attributes from related child features
};
/**
* Constructor for QgsLayoutItemAttributeTable, attached to the specified \a layout.
*
* Ownership is transferred to the layout.
*/
QgsLayoutItemAttributeTable( QgsLayout *layout SIP_TRANSFERTHIS );
int type() const override;
QIcon icon() const override;
QString displayName() const override;
/**
* Returns a new QgsLayoutItemAttributeTable for the specified parent \a layout.
*/
static QgsLayoutItemAttributeTable *create( QgsLayout *layout ) SIP_FACTORY;
/**
* Sets the \a source for attributes to show in table body.
* \see source()
*/
void setSource( ContentSource source );
/**
* Returns the source for attributes shown in the table body.
* \see setSource()
*/
ContentSource source() const { return mSource; }
/**
* Returns the source layer for the table, considering the table source mode. For example,
* if the table is set to atlas feature mode, then the source layer will be the
* atlas coverage layer. If the table is set to layer attributes mode, then
* the source layer will be the user specified vector layer.
*/
QgsVectorLayer *sourceLayer() const;
/**
* Sets the vector \a layer from which to display feature attributes.
*
* This is only considered if the table source() is LayerAttributes.
*
* \see vectorLayer()
*/
void setVectorLayer( QgsVectorLayer *layer );
/**
* Returns the vector layer the attribute table is currently using.
*
* This is only considered if the table source() is LayerAttributes.
*
* \see setVectorLayer()
* \see sourceLayer()
*/
QgsVectorLayer *vectorLayer() const { return mVectorLayer.get(); }
/**
* Sets the relation \a id from which to display child features
* \see relationId()
* \see setSource()
* \note Only used if table source() is set to RelationChildren.
*/
void setRelationId( const QString &id );
/**
* Returns the relation id which the table displays child features from.
* \see setRelationId()
* \see source()
* \note Only used if table source() is set to RelationChildren.
*/
QString relationId() const { return mRelationId; }
/**
* Resets the attribute table's columns to match the vector layer's fields.
* \see setVectorLayer()
*/
void resetColumns();
/**
* Sets a layout \a map to use to limit the extent of features shown in the
* attribute table. This setting only has an effect if setDisplayOnlyVisibleFeatures is
* set to TRUE. Changing the map forces the table to refetch features from its
* vector layer, and may result in the table changing size to accommodate the new displayed
* feature attributes.
* \see map()
* \see setDisplayOnlyVisibleFeatures
*/
void setMap( QgsLayoutItemMap *map );
/**
* Returns the layout map whose extents are controlling the features shown in the
* table. The extents of the map are only used if displayOnlyVisibleFeatures() is TRUE.
* \see setMap()
* \see displayOnlyVisibleFeatures()
*/
QgsLayoutItemMap *map() const { return mMap; }
/**
* Sets the maximum number of \a features shown by the table. Changing this setting may result
* in the attribute table changing its size to accommodate the new number of rows, and requires
* the table to refetch features from its vector layer.
* \see maximumNumberOfFeatures()
*/
void setMaximumNumberOfFeatures( int features );
/**
* Returns the maximum number of features to be shown by the table.
* \see setMaximumNumberOfFeatures()
*/
int maximumNumberOfFeatures() const { return mMaximumNumberOfFeatures; }
/**
* Sets attribute table to only show unique rows.
*
* Set \a uniqueOnly to TRUE to show only unique rows. Duplicate rows
* will be stripped from the table.
*
* \see uniqueRowsOnly()
*/
void setUniqueRowsOnly( bool uniqueOnly );
/**
* Returns TRUE if the table is set to show only unique rows.
*
* \see setUniqueRowsOnly()
*/
bool uniqueRowsOnly() const { return mShowUniqueRowsOnly; }
/**
* Sets the attribute table to only show features which are visible in a map item. Changing
* this setting forces the table to refetch features from its vector layer, and may result in
* the table changing size to accommodate the new displayed feature attributes.
*
* \see displayOnlyVisibleFeatures()
* \see setMap()
*/
void setDisplayOnlyVisibleFeatures( bool visibleOnly );
/**
* Returns TRUE if the table is set to show only features visible on a corresponding
* map item.
*
* \see map()
* \see setDisplayOnlyVisibleFeatures()
*/
bool displayOnlyVisibleFeatures() const { return mShowOnlyVisibleFeatures; }
/**
* Sets attribute table to only show features which intersect the current atlas
* feature.
*
* \see filterToAtlasFeature()
*/
void setFilterToAtlasFeature( bool filterToAtlas );
/**
* Returns TRUE if the table is set to only show features which intersect the current atlas
* feature.
*
* \see setFilterToAtlasFeature()
*/
bool filterToAtlasFeature() const { return mFilterToAtlasIntersection; }
/**
* Returns TRUE if a feature filter is active on the attribute table.
*
* \see setFilterFeatures()
* \see featureFilter()
*/
bool filterFeatures() const { return mFilterFeatures; }
/**
* Sets whether the feature filter is active for the attribute table. Changing
* this setting forces the table to refetch features from its vector layer, and may result in
* the table changing size to accommodate the new displayed feature attributes.
* \see filterFeatures()
* \see setFeatureFilter()
*/
void setFilterFeatures( bool filter );
/**
* Returns the current expression used to filter features for the table. The filter is only
* active if filterFeatures() is TRUE.
*
* \see setFeatureFilter()
* \see filterFeatures()
*/
QString featureFilter() const { return mFeatureFilter; }
/**
* Sets the \a expression used for filtering features in the table. The filter is only
* active if filterFeatures() is set to TRUE. Changing this setting forces the table
* to refetch features from its vector layer, and may result in
* the table changing size to accommodate the new displayed feature attributes.
*
* \see featureFilter()
* \see setFilterFeatures()
*/
void setFeatureFilter( const QString &expression );
/**
* Sets the attributes to display in the table.
* \param fields list of fields names from the vector layer to show.
* Set to an empty list to show all feature attributes.
* \param refresh set to TRUE to force the table to refetch features from its vector layer
* and immediately update the display of the table. This may result in the table changing size
* to accommodate the new displayed feature attributes.
*/
void setDisplayedFields( const QStringList &fields, bool refresh = true );
/**
* Sets a string to wrap the contents of the table cells by. Occurrences of this string will
* be replaced by a line break.
* \param wrapString string to replace with line break
* \see wrapString()
*/
void setWrapString( const QString &wrapString );
/**
* Returns the string used to wrap the contents of the table cells by. Occurrences of this string will
* be replaced by a line break.
* \see setWrapString()
*/
QString wrapString() const { return mWrapString; }
/**
* Queries the attribute table's vector layer for attributes to show in the table.
* \param contents table content
* \returns TRUE if attributes were successfully fetched
* \note not available in Python bindings
*/
bool getTableContents( QgsLayoutTableContents &contents ) override SIP_SKIP;
QgsConditionalStyle conditionalCellStyle( int row, int column ) const override;
QgsExpressionContext createExpressionContext() const override;
void finalizeRestoreFromXml() override;
void refreshDataDefinedProperty( QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties ) override;
/**
* Returns TRUE if the attribute table will be rendered using the conditional styling
* properties of the linked vector layer.
*
* \see setUseConditionalStyling()
* \since QGIS 3.12
*/
bool useConditionalStyling() const;
/**
* Sets whether the attribute table will be rendered using the conditional styling
* properties of the linked vector layer.
*
* \see useConditionalStyling()
* \since QGIS 3.12
*/
void setUseConditionalStyling( bool enabled );
protected:
bool writePropertiesToElement( QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context ) const override;
bool readPropertiesFromElement( const QDomElement &itemElem, const QDomDocument &doc, const QgsReadWriteContext &context ) override;
private slots:
void disconnectCurrentMap();
private:
//! Attribute source
ContentSource mSource = LayerAttributes;
//! Associated vector layer
QgsVectorLayerRef mVectorLayer = nullptr;
//! Data defined vector layer - only
QPointer< QgsVectorLayer > mDataDefinedVectorLayer;
//! Relation id, if in relation children mode
QString mRelationId;
//! Current vector layer, if in atlas feature mode
QgsVectorLayer *mCurrentAtlasLayer = nullptr;
//! Associated map (used to display the visible features)
QgsLayoutItemMap *mMap = nullptr;
QString mMapUuid;
//! Maximum number of features that is displayed
int mMaximumNumberOfFeatures = 30;
//! True if only unique rows should be shown
bool mShowUniqueRowsOnly = false;
//! Shows only the features that are visible in the associated layout map (TRUE by default)
bool mShowOnlyVisibleFeatures = false;
//! Shows only the features that intersect the current atlas feature
bool mFilterToAtlasIntersection = false;
//! True if feature filtering enabled
bool mFilterFeatures = false;
//! Feature filter expression
QString mFeatureFilter;
QString mWrapString;
bool mUseConditionalStyling = false;
QList< QList< QgsConditionalStyle > > mConditionalStyles;
/**
* Returns a list of attribute indices corresponding to displayed fields in the table.
* \note kept for compatibility with 2.0 api only
*/
QList<int> fieldsToDisplay() const;
/**
* Restores a field alias map from a pre 2.4 format project file format
* \param map QMap of integers to strings, where the string is the alias to use for the
* corresponding field, and the integer is the field index from the vector layer
*/
void restoreFieldAliasMap( const QMap<int, QString> &map );
/**
* Replaces occurrences of the wrap character with line breaks.
* \param variant input cell contents
*/
QVariant replaceWrapChar( const QVariant &variant ) const;
private slots:
//! Checks if this vector layer will be removed (and sets mVectorLayer to 0 if yes)
void removeLayer( const QString &layerId );
void atlasLayerChanged( QgsVectorLayer *layer );
};
#endif // QGSLAYOUTITEMATTRIBUTETABLE_H