Size and Rotation can be defined by an expression for all symbols
composing a marker. Width can be defined by an expression for all
symbols composing a line.
For markers, a legend is generated for varying sizes. This allows
multivariate analysis legend in the case of classified/graduated colors.
The offset is now set along with size to maintain the relative position
of symbols composing a marker.
An asistant, with preview, is accessible through the data defined button
to help the user define the size expression. Three methods are
available: Frannery, Area and Radius.
Added a widget for use in categorized/classified symbology gui to set
the expression if needed. The assistant is also available from it.
This adds a new histogram tab to the graduated renderer, which
shows an interactive histogram of the values from the assigned
field or expression. Class breaks can be moved or added using
the histogram widget.
A base class, QgsHistogramWidget, has been created to display
histograms for a field or expression. In future this could be
used to show a histogram within a "selection statistics" panel.
Sponsored by ADUGA (http://www.aduga.org)
This commit adds a new framework for implementing paint effects, which
modify the results of QPainter operations to apply visual effects
such as drop shadows and blurs.
The initial implementation allows for effects to be applied to entire
layers and individual symbol layers.
Included are a drop shadow, inner shadow, blur, inner glow, outer glow,
colorise and transform effect. A "stack" effect is also implemented
which allows other paint effects to be combined in various ways.
Sponsored by hundreds of generous kickstarter contributors!
Allows for live, dynamic heatmaps for point layers. Options include
specifying heatmap radius in pixels, mm or map units, choice of
color ramp, and a slider for selecting a tradeoff between render
speed and quality.
QToolButton. Features:
- context menu items have been moved to the attached menu button
- new gui widget QgsColorSwatchGrid, which displays a grid of colors
- new class for QgsColorScheme, which generates colors to show in a
color swatch grid
- new class QgsColorSchemeRegistry, with a global instance containing
default color schemes. QgsColorButtonV2 accepts a color scheme
registry, to control which schemes to show in the popup menu as
color swatch grids.
- color button can have a default color
- color button can also be quickly set to a totally transparent color
- c++ and python unit tests for all core components
used as a generic api for registering actions which can apply to
a specific map layer or layer type.
Create a QgsMapLayerAction for setting features as the current
atlas feature for compositions.
This work was kindly sponsored by SIGE (www.sige.ch).
to an abstract base class QgsVectorLayerTools in the gui library,
so these can be reimplemented for a custom app, but can also be used
from plugins or in the gui library.
* With a selection model, the way the attribute table handles selections
can be customized. E.g. synchronized to layer selection or used to pick
features.
* With request filters, the visible features on an attribute table can be
limited. This will effectively reduce the subset of features the attribute
table works on. Additional filters by means of a proxy model can of course
further reduce the visible subset subsequently.
