27 #include "qgis_core.h" 36 int QgisEvent = QEvent::User + 1;
55 static QString version();
62 static int versionInt();
69 static QString releaseName();
79 static QString devVersion();
116 ARGB32_Premultiplied = 13
137 static const
double DEFAULT_SEARCH_RADIUS_MM;
140 static const
float DEFAULT_MAPTOPIXEL_THRESHOLD;
148 static const QColor DEFAULT_HIGHLIGHT_COLOR;
154 static const
double DEFAULT_HIGHLIGHT_BUFFER_MM;
160 static const
double DEFAULT_HIGHLIGHT_MIN_WIDTH_MM;
168 static const
double SCALE_PRECISION;
175 static const
double DEFAULT_Z_COORDINATE;
182 static const
double UI_SCALE_FACTOR;
188 static const
double DEFAULT_SNAP_TOLERANCE;
201 static QString defaultProjectScales();
208 #define cast_to_fptr(f) f 230 , mPreviousState( object->blockSignals( true ) )
235 mObject->blockSignals( mPreviousState );
243 Object *mObject =
nullptr;
268 CORE_EXPORT uint
qHash(
const QVariant &variant );
279 QString str = QString::number( a,
'f',
precision );
280 if ( str.contains( QLatin1Char(
'.' ) ) )
283 int idx = str.length() - 1;
284 while ( str.at( idx ) ==
'0' && idx > 1 )
288 if ( idx < str.length() - 1 )
289 str.truncate( str.at( idx ) ==
'.' ? idx : idx + 1 );
297 const QString str( QString::number( a,
'f',
precision ) );
298 if ( str == QLatin1String(
"-0" ) )
300 return QLatin1String(
"0" );
315 inline bool qgsDoubleNear(
double a,
double b,
double epsilon = 4 * std::numeric_limits<double>::epsilon() )
317 if ( std::isnan( a ) || std::isnan( b ) )
318 return std::isnan( a ) && std::isnan( b ) ;
320 const double diff = a - b;
321 return diff > -epsilon && diff <= epsilon;
330 inline bool qgsFloatNear(
float a,
float b,
float epsilon = 4 * FLT_EPSILON )
332 if ( std::isnan( a ) || std::isnan( b ) )
333 return std::isnan( a ) && std::isnan( b ) ;
335 const float diff = a - b;
336 return diff > -epsilon && diff <= epsilon;
342 if ( std::isnan( a ) || std::isnan( b ) )
343 return std::isnan( a ) && std::isnan( b ) ;
351 double ar = std::frexp( a, &aexp );
352 double br = std::frexp( b, &bexp );
354 return aexp == bexp &&
355 std::round( ar * std::pow( 10.0, significantDigits ) ) == std::round( br * std::pow( 10.0, significantDigits ) );
363 inline double qgsRound(
double number,
int places )
365 double m = ( number < 0.0 ) ? -1.0 : 1.0;
366 double scaleFactor = std::pow( 10.0, places );
367 return ( std::round( number * m * scaleFactor ) / scaleFactor ) * m;
396 template <
typename T>
struct QgsAddConst {
typedef const T Type; };
398 template <
typename T>
399 constexpr
typename QgsAddConst<T>::Type &as_const( T &t ) noexcept {
return t; }
401 template <
typename T>
402 void as_const(
const T && ) =
delete;
406 template<
class T>
struct _Unique_if
408 typedef std::unique_ptr<T> _Single_object;
411 template<
class T>
struct _Unique_if<T[]>
413 typedef std::unique_ptr<T[]> _Unknown_bound;
416 template<
class T,
size_t N>
struct _Unique_if<T[N]>
418 typedef void _Known_bound;
421 template<
class T,
class... Args>
422 typename _Unique_if<T>::_Single_object
423 make_unique( Args &&... args )
425 return std::unique_ptr<T>(
new T( std::forward<Args>( args )... ) );
429 typename _Unique_if<T>::_Unknown_bound
430 make_unique(
size_t n )
432 typedef typename std::remove_extent<T>::type U;
433 return std::unique_ptr<T>(
new U[n]() );
436 template<
class T,
class... Args>
437 typename _Unique_if<T>::_Known_bound
438 make_unique( Args &&... ) =
delete;
452 template<
typename... Args>
struct overload
454 template<
typename C,
typename R>
455 static constexpr
auto of( R( C::*pmf )( Args... ) ) -> decltype( pmf )
471 QMetaEnum metaEnum = QMetaEnum::fromType<T>();
472 Q_ASSERT( metaEnum.isValid() );
473 QMap<T, QString> enumMap;
474 for (
int idx = 0; idx < metaEnum.keyCount(); ++idx )
476 const char *enumKey = metaEnum.key( idx );
477 enumMap.insert( static_cast<T>( metaEnum.keyToValue( enumKey ) ), QString( enumKey ) );
488 QMetaEnum metaEnum = QMetaEnum::fromType<T>();
489 Q_ASSERT( metaEnum.isValid() );
490 return QString::fromUtf8( metaEnum.valueToKey( static_cast<int>( value ) ) );
500 QMetaEnum metaEnum = QMetaEnum::fromType<T>();
501 Q_ASSERT( metaEnum.isValid() );
503 T v =
static_cast<T
>( metaEnum.keyToValue( key.toUtf8().data(), &ok ) );
563 CORE_EXPORT
bool qgsVariantEqual(
const QVariant &lhs,
const QVariant &rhs );
580 CORE_EXPORT QString
qgsVsiPrefix(
const QString &path );
607 #define CONSTLATIN1STRING inline const QLatin1String 609 #define CONSTLATIN1STRING constexpr QLatin1String 618 #if PROJ_VERSION_MAJOR>=6 619 return QLatin1String(
620 R
"""(GEOGCRS["WGS 84",DATUM["World Geodetic System 1984",ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["unknown"],AREA["World"],BBOX[-90,-180,90,180]],ID["EPSG",4326]] )""" 623 return QLatin1String(
624 "GEOGCS[\"WGS 84\", " 625 " DATUM[\"WGS_1984\", " 626 " SPHEROID[\"WGS 84\",6378137,298.257223563, " 627 " AUTHORITY[\"EPSG\",\"7030\"]], " 628 " TOWGS84[0,0,0,0,0,0,0], " 629 " AUTHORITY[\"EPSG\",\"6326\"]], " 630 " PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]], " 631 " UNIT[\"DMSH\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9108\"]], " 632 " AXIS[\"Lat\",NORTH], " 633 " AXIS[\"Long\",EAST], " 634 " AUTHORITY[\"EPSG\",\"4326\"]]" 642 return QLatin1String(
"+proj=longlat +datum=WGS84 +no_defs" );
648 return QLatin1String(
"EPSG:4326" );
654 return QLatin1String(
"NONE" );
660 const int PREVIEW_JOB_DELAY_MS = 250;
663 const int MAXIMUM_LAYER_PREVIEW_TIME_MS = 250;
706 #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) || defined(__clang__) 708 #define Q_NOWARN_DEPRECATED_PUSH \ 709 _Pragma("GCC diagnostic push") \ 710 _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\""); 711 #define Q_NOWARN_DEPRECATED_POP \ 712 _Pragma("GCC diagnostic pop"); 713 #define Q_NOWARN_UNREACHABLE_PUSH 714 #define Q_NOWARN_UNREACHABLE_POP 716 #elif defined(_MSC_VER) 718 #define Q_NOWARN_DEPRECATED_PUSH \ 719 __pragma(warning(push)) \ 720 __pragma(warning(disable:4996)) 721 #define Q_NOWARN_DEPRECATED_POP \ 722 __pragma(warning(pop)) 723 #define Q_NOWARN_UNREACHABLE_PUSH \ 724 __pragma(warning(push)) \ 725 __pragma(warning(disable:4702)) 726 #define Q_NOWARN_UNREACHABLE_POP \ 727 __pragma(warning(pop)) 731 #define Q_NOWARN_DEPRECATED_PUSH 732 #define Q_NOWARN_DEPRECATED_POP 733 #define Q_NOWARN_UNREACHABLE_PUSH 734 #define Q_NOWARN_UNREACHABLE_POP 741 # define QGISEXTERN extern "C" __declspec( dllexport ) 744 # pragma warning(disable:4190) 747 # if defined(__GNUC__) || defined(__clang__) 748 # define QGISEXTERN extern "C" __attribute__ ((visibility ("default"))) 750 # define QGISEXTERN extern "C" 756 #if __cplusplus >= 201500 757 #define FALLTHROUGH [[fallthrough]]; 758 #elif defined(__clang__) 759 #define FALLTHROUGH [[clang::fallthrough]]; 760 #elif defined(__GNUC__) && __GNUC__ >= 7 761 #define FALLTHROUGH [[gnu::fallthrough]]; 767 #if __cplusplus >= 201703L 768 #define NODISCARD [[nodiscard]] 769 #elif defined(__clang__) 770 #define NODISCARD [[nodiscard]] 771 #elif defined(_MSC_VER) 772 #define NODISCARD // no support 773 #elif defined(__has_cpp_attribute) 774 #if __has_cpp_attribute(nodiscard) 775 #define NODISCARD [[nodiscard]] 776 #elif __has_cpp_attribute(gnu::warn_unused_result) 777 #define NODISCARD [[gnu::warn_unused_result]] 779 #define NODISCARD Q_REQUIRED_RESULT 782 #define NODISCARD Q_REQUIRED_RESULT 785 #if __cplusplus >= 201703L 786 #define MAYBE_UNUSED [[maybe_unused]] 787 #elif defined(__clang__) 788 #define MAYBE_UNUSED [[maybe_unused]] 789 #elif defined(_MSC_VER) 790 #define MAYBE_UNUSED // no support 791 #elif defined(__has_cpp_attribute) 792 #if __has_cpp_attribute(gnu::unused) 793 #define MAYBE_UNUSED [[gnu::unused]] 811 QString CORE_EXPORT
geoWkt();
CORE_EXPORT QString qgsVsiPrefix(const QString &path)
static const char * QGIS_DEV_VERSION
The development version.
bool qgsFloatNear(float a, float b, float epsilon=4 *FLT_EPSILON)
Compare two floats (but allow some difference)
CORE_EXPORT bool qgsVariantEqual(const QVariant &lhs, const QVariant &rhs)
Compares two QVariant values and returns whether they are equal, two NULL values are always treated a...
QString qgsEnumValueToKey(const T &value)
Returns the value for the given key of an enum.
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
CONSTLATIN1STRING geoWkt()
Wkt string that represents a geographic coord sys.
CONSTLATIN1STRING geoNone()
Constant that holds the string representation for "No ellips/No CRS".
DataType
Raster data types.
void CORE_EXPORT * qgsCalloc(size_t nmemb, size_t size)
Allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the alloc...
MessageLevel
Level for messages This will be used both for message log and message bar in application.
QMap< QString, QString > QgsStringMap
The Qgis class provides global constants for use throughout the application.
CORE_EXPORT bool qgsVariantLessThan(const QVariant &lhs, const QVariant &rhs)
Compares two QVariant values and returns whether the first is less than the second.
CORE_EXPORT bool qMapLessThanKey< QVariantList >(const QVariantList &key1, const QVariantList &key2)
Compares two QVariantList values and returns whether the first is less than the second.
QgsSignalBlocker(Object *object)
Constructor for QgsSignalBlocker.
#define CONSTLATIN1STRING
T qgsEnumKeyToValue(const QString &key, const T &defaultValue)
Returns the value corresponding to the given key of an enum.
const double DEFAULT_SEGMENT_EPSILON
Default snapping tolerance for segments.
Macros will not be run for this session.
QString qgsDoubleToString(double a, int precision=17)
Returns a string representation of a double.
This is the class is providing tolerance value in map unit values.
const long GEOCRS_ID
Magic number for a geographic coord sys in QGIS srs.db tbl_srs.srs_id.
CORE_EXPORT double qgsPermissiveToDouble(QString string, bool &ok)
Converts a string to a double in a permissive way, e.g., allowing for incorrect numbers of digits bet...
RAII signal blocking class.
void CORE_EXPORT qgsFree(void *ptr)
Frees the memory space pointed to by ptr.
CORE_EXPORT qlonglong qgsPermissiveToLongLong(QString string, bool &ok)
Converts a string to an qlonglong in a permissive way, e.g., allowing for incorrect numbers of digits...
unsigned long long qgssize
Qgssize is used instead of size_t, because size_t is stdlib type, unknown by SIP, and it would be har...
const double DEFAULT_POINT_SIZE
Magic number that determines the default point size for point symbols.
CONSTLATIN1STRING geoProj4()
PROJ4 string that represents a geographic coord sys.
const int USER_CRS_START_ID
Magick number that determines whether a projection crsid is a system (srs.db) or user (~/...
const QMap< T, QString > qgsEnumMap()
Returns a map of all enum entries.
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.
const long GEOSRID
Magic number for a geographic coord sys in POSTGIS SRID.
double qgsRound(double number, int places)
Returns a double number, rounded (as close as possible) to the specified number of places...
bool qgsDoubleNearSig(double a, double b, int significantDigits=10)
Compare two doubles using specified number of significant digits.
const double DEFAULT_LINE_WIDTH
PythonMacroMode
Authorisation to run Python Macros.
CORE_EXPORT uint qHash(const QVariant &variant)
Hash for QVariant.
CORE_EXPORT int qgsPermissiveToInt(QString string, bool &ok)
Converts a string to an integer in a permissive way, e.g., allowing for incorrect numbers of digits b...
CONSTLATIN1STRING geoEpsgCrsAuthId()
Geographic coord sys from EPSG authority.
CORE_EXPORT bool qgsVariantGreaterThan(const QVariant &lhs, const QVariant &rhs)
Compares two QVariant values and returns whether the first is greater than the second.
void CORE_EXPORT * qgsMalloc(size_t size)
Allocates size bytes and returns a pointer to the allocated memory.
Object * operator->()
Returns pointer to blocked QObject.
const long GEO_EPSG_CRS_ID
Magic number for a geographic coord sys in EpsgCrsId ID format.