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| <div class='klayout-generated-doc'><p class="navigator"><b>KLayout Documentation (Qt 5): </b><a href="../index.html">Main Index</a> » <a href="index.html">KLayout User Manual</a> » <a href="basic.html">KLayout Basics</a> » Selecting Rulers, Shapes Or Instances</p><h1>Selecting Rulers, Shapes Or Instances</h1><a name="k_1"></a><a name="k_2"></a><a name="k_3"></a><p> |
| Rulers, images, shapes or instances can be selected by either clicking on the shape, instance, ruler or image in "Select" mode or |
| by dragging a selection rectangle with the left mouse button pressed. In this case, |
| all objects inside the selection rectangle will be selected. |
| </p><p> |
| Pressing the Shift key in addition to selecting shapes, instances or other objects will extend the current |
| selection. Pressing Ctrl key will remove the given objects from the selection. |
| </p><p> |
| For layout objects (shapes and instances), it is possible to select the objects through the hierarchy or |
| on the level of the current cell only (top level objects only). By default, objects are selected through the |
| hierarchy. That means, objects in child cells can be selected. By extending the selection over multiple |
| instances of a cell, the same object can be selected multiple times. While editing objects inside a |
| child cell may be a desirable feature, this can lead to confusing effects in the end. Hence, it may |
| to more intuitive to only work on top level, i.e. on the current cell. To enable this mode, check |
| the "Select Top Level Objects Only" menu item in the "View" menu or the same in the edit mode options |
| dialog (F3). |
| </p><p> |
| In top-level only mode, instances of cells are selected only if the cells have a visual appearance. |
| This is the case, if they contain at least one shape on a visible layer for example. If they |
| are empty with respect to the visible layers, they cannot be selected. If the cell's box is shown, because |
| the hierarchy levels shown are confined a sufficiently small interval, the cell instances will always be selected. |
| </p><p> |
| Images and rulers are simple objects not embedded in a hierarchy and can be selected by clicking at them or enclosing them in |
| the selection box. |
| </p><p> |
| Object properties can be inspected or edited (if allowed) by opening the properties dialog. |
| To edit or inspect the properties of selected objects, choose "Properties" from the "Edit" menu. |
| A dialog will open which shows the properties for the first selected object. To proceed to the next object |
| push the "Next" button, to go back to the previous object push the "Previous" button. |
| </p><p> |
| Depending on the application mode, the properties of the selected objects may be edited too. |
| To apply changes to the current object, choose "Apply". To apply the changes and close the dialog, |
| choose "Ok". To apply the changes to the current object and all other selected objects of the same kind, choose "Apply To All" |
| (if applicable). To close the dialog without applying any changes, choose "Cancel". |
| </p><p> |
| "Apply To All" will try to apply the changes in some smart way to other objects. For example, for |
| boxes, and change of the box dimensions will be applied in the same way (same shift in the four directions) |
| than for the current object. If the width of a path has been changed, the same width will be applied |
| to all other paths and so forth. |
| </p><p> |
| For shapes and instances, the "User properties" can be edited too. "User properties" are arbitrary |
| properties attached to shapes and instances. They consist of a key (preferably a number for GDS2 compatibility) |
| and a value (preferably a string in GDS2). Multiple properties of that kind can be attached to one |
| object. User properties can be edited by pushing the "User Properties" button which will open a |
| dialog that allows editing of the properties. If this dialog is closed with "Ok", the user properties |
| will be kept, but applied to the layout object only after pressing "Apply"/"Ok" or "Apply To All". |
| The latter will apply the new properties to all other shapes of the same kind. |
| </p><p> |
| Finally, for shapes and instances, the "Instantiation" button will show the instantiation path of |
| the shapes or instances. |
| </p><p> |
| The layer of a shape cannot be changed through the properties dialog. To move a shape to a |
| different layer, use "Change Layer" from the "Selection" sub-menu in "Edit". |
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