Mouse hover event is SLOW! As a result, prop "want_hover" is default setted to "0", means disabled.

We will add additional plugin function to reset this prop in future.

We find a serious BUG, that in multi-layer Qt widget app, signal auto connection approach will fail if two QPushButton (for example) has same object name.
Qt deigner will automaticlly avoid using same object name for two different controls. However, when a widget contains many controls is created as a child widget in mainFrame, auto connection approach will only match first control for one slot.
To slove this problem, all control names should be changed to different style.

We do not use instance ID in layer names, which will cause problems during container UI re-constructing

We do not use instance ID in layer names, which will cause problems during container UI re-constructing

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

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. 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.