Then click on the red-bordered QuickMask icon in the lower-left corner of your image. After you click the red QuickMask button, a translucent red mask appears around your selection. This red mask represents the outside of your selection. When you click the dashed QuickMask button to go back into normal selection mode, anything red will not be selected, and anything clear will be.
First, right click on the image and select. The mask gets all wavy. Now that there is a soft edge on the mask, click the dashed QuickMask button to convert the mask back into a selection. Holding Alt will allow movement of the current selection only its frame, not its content. Note that the Alt key is sometimes intercepted by the windowing system meaning that GIMP never knows that it was pressed , so this may not work for everybody.
When creating a selection, holding down the Shift key can have two different actions according to the way you use it:. If you hold down the key before clicking to start the selection, this selection will be in Addition mode as long as you press the key. If you hold down the Shift key after clicking to start the selection, the effect will depend on the tool you are using: for example, the selection will be a square with the Rectangle Select tool.
Common to all selection tools is that the selection mode will be switched to intersection, so that after the operation is finished, the selection will consist of the intersection of the region traced out with the pre-existing selection.
See Section 2. Pressing the Space bar while using a selection tool transforms this tool into the Navigation cross as long as you press the bar, allowing you to pan around the image instead of using the scroll-bars when your image is bigger than the canvas. Here we describe the tool options that apply to all selection tools: options that apply only to some tools, or that affect each tool differently, are described in the sections devoted to the individual tools.
The current settings for these options can be seen in the Tool Options dialog, which you should always have visible when you are using tools. To make the interface consistent, the same options are presented for all selection tools, even though some of them don't have any effect for some of the tools.
This determines the way that the selection you create is combined with any pre-existing selection. Note that the functions performed by these buttons can be duplicated using modifier keys, as described above.
For the most part, advanced users use the modifier keys; novice users find the mode buttons easier. Replace mode will cause any existing selection to be destroyed or replaced when the new selection is created. Pressing and releasing the mouse pointer allows you to mix free hand segments and polygonal segments. You can go outside the edge of the image display and come back in if you want to.
Experienced users find that it is often convenient to begin with the lasso tool, but then switch to QuickMask mode for detail work.
For information on features common to all selection tools see Selection Tools. Figure Mixing free hand segments and polygonal segments. The Free Select tool has key modifiers that affect all selection tools in the same way. See Selection Tools for help with these. Backspace returns to previous selection step removes last selection segment , Escape cancels all selection segments.
To move the selection, see Moving selections. Rough selection with the Free Selection tool. Normally, tool options are displayed in a window attached under the Toolbox as soon as you activate a tool. The Free Select tool has no special tool options, only the ones that affect all selection tools in the same way.
Marching ants come with a continuous line, meaning that the selection is not validated yet and that you can still change the selection shape mouse pointer comes with the Move icon.
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