This causes the project to be read, but no data providers created for
layers (i.e. the same result as loading a project in the app and
choosing to leave bad layers in the project).
It's intended for occasions when you want to efficiently access properties
of a project without the (often very expensive) cost of actually
loading layers. E.g. to just read project metadata, parse the
layer tree structure, extract print layouts or renderer properties, etc.
Adds a new visitor pattern API for creation of visitors which visit
all the style entities (symbols, color ramps, text formats, and
label styles) associated with different objects. Can be used on a
renderer, map layer, or project wide level.
E.g. on a project wide level, allows collection of ALL the style
symbols/color ramps/text settings inside a project, including those
in layouts or annotations!
... and add a getter for coordinateTransform to QgsMapLayer
The reason is that I think we should reduce the dataProvider API
usage and rely on the higher level QgsMapLayer API whenever it
is possible, QgsMapLayer checks for data provider validity
and returns a default constructed QgsCoordinateTransform instead
of crashing.
For the c++ api dox this expands to "\c nullptr" (the
\c directive indicates a code literal value), and for sipify/Python
it expands to ``None`` (`` is sphinx annotation for literal values)
Makes for nicer dox for both c++ and Python!
not working yet, just set the menu entries
QgsMapLayerStyle::StyleCategory has moved to QgsMapLayer to avoid making QgsMapLayerStyle a QObject and they are mostly used in QgsMapLayer
* create QgsMapLayer::LayerFlags for Searchable, Identifiable and Removable
this brings back the information previously saved in the project node back to the layer node
this will allow to embed this information in layer styles
* skip unexisting flag node to avoid setting wrong value for flag
* mark QgsProject::(set)requiredLayers as deprecated
* better API docs
* use new API in current code
* more docs and more old API fixes
* fix bad conversion
* more old API fix
* add missing SIP_OUT
* s/testFlags/testFlag
* fix var name
* adapt project test to test flags
* remove debug calls
* fixeS
Checks whether a function declaration has parameters that are
top level const.
const values in declarations do not affect the signature of a
function, so they should not be put there.
