With the help of this feature, a function call without complete style para will use the default.

We gives every geo_graphics_item an prop, which is a boolean variable. Items can be selected by mouse dragging.

using props_vis to get detailed prop showing status for specified items
using show_props to determing detailed props visibility for the giving items

disable UI list refresh during geomarker layer calls. the UI list refresh will significantly reduce performance

Multiline can hold several lines in one top-level item. now, point, line, multiline, polygon, these geo types can hold WKT style geo elements in future.

2.sloved a geomarker graphics item click and dblclick mismatch. In old case, when mouse clicks, a dblclick message will be pumped.

2. individually update tableView instead of at one time.

try to partical slove ui deadlock in heavy items count , however, we need a abstract view in low level 0~3.

2. next , we will build command support for icon items

2. we will build other functions later

2. Add a pixmap geo graphics item, for future new features.

2. set 3 method, perpare for call_func.
Signed-off-by: goldenhawking <goldenhawking@163.com>

2. Add a Item clicked event, for  geomarker.

2.make a copy painting , sloved +180 -180 polygon drawing problem.

pen and brush now are  independent with shapes.