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<th colspan="3" align="center" id="chaptername">11. Getting Unstuck</th>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<h2 class="title" style="clear: both"><a id="gimp-using-getting-unstuck"></a>11. Getting Unstuck</h2>
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<a id="id3318342" class="indexterm"></a>
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<div class="simplesect" lang="en" xml:lang="en">
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<div class="titlepage">
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<h3 class="title"><a id="id3318690"></a><span class="emphasis"><em>Stuck!</em></span></h3>
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All right, okay: you're stuck. You're trying to use one of the
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tools on an image, and nothing is happening, and nothing you try
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makes any difference. Your fists are starting to clench, and your
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face is starting to feel warm. Are you going to have to kill the
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program, and lose all your work? This sucks!
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Well, hold on a second. This happens pretty frequently, even to
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people who've used the GIMP for a long time, but generally the
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cause is not so hard to figure out (and fix) if you know what to
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look at. Lets be calm, and go through a checklist that will
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probably get you GIMPing happily again.
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<div class="simplesect" lang="en" xml:lang="en">
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<div class="titlepage">
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<h3 class="title"><a id="id3318762"></a>Common causes of GIMP non-responsiveness</h3>
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<div class="variablelist">
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<span class="term">There is a floating selection</span>
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<div class="informalfigure">
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<div class="mediaobject">
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<img src="../images/using/unstuck-floating-sel.png" />
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Layers dialog showing a floating selection.
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Le dialogue des calques montrant une sélection flottante.
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<span class="bold"><b>How to tell:</b></span> If there is a
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floating selection, many actions are impossible until it is
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anchored. To check, look at the Layers dialog (making sure
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it's set to the image you're working on) and see whether the
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top layer is called "Floating Selection".
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<span class="bold"><b>How to solve:</b></span> Either anchor
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the floating selection, or convert it into an ordinary
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(non-floating) layer. If you need help on how to do this,
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see Floating Selections.
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<span class="term">The selection is hidden</span>
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<div class="informalfigure">
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<div class="mediaobject">
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<img src="../images/using/unstuck-show-selection-menu.png" />
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<div class="caption">
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In the View menu, make sure that "Show Selection" is
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<span class="bold"><b>How to tell:</b></span> If this is
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the problem, merely reading this will already have made
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you realize it, probably, but to explain in any case:
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sometimes the flickering line that outlines the selection
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is annoying because it makes it hard to see important
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details of the image, so Gimp gives you the option of
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hiding the selection, by unchecking <span class="guimenuitem">Show
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Selection</span> in the
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<span class="guimenu">View</span> menu. It is easy to forget that
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you have done this, though.
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<span class="bold"><b>How to fix:</b></span> If this
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hasn't rung any bells, it isn't the problem, andif it has,
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you probably know how to fix it, because it doesn't happen
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unless you explicitly tell it to; but anyway: just go to
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the <span class="guimenu">View</span> menu for the image and, if
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<span class="guimenuitem">Show Selection</span> is
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unchecked, click on it..
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<span class="term">You are acting outside of the selection</span>
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<div class="informalfigure">
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<div class="mediaobject">
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<img src="../images/using/unstuck-select-all.png" />
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<div class="caption">
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Click "All" in the Select menu to make sure that
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everything is selected.
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Sélectionnez Tout dans le menu de Sélection pour
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être sûr que tout le canevas soit sélectionné.
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<span class="bold"><b>How to fix:</b></span> If doing this
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has destroyed a selection that you wanted to keep, hit
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Ctrl-Z (undo) a couple of times to restore it, and then
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we'll figure out what the problem is. There are a couple
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of possibilities. If you couldn't see any selection,
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there may have been a very tiny one, or even one that
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contained no pixels. If this was the case, it surely is
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not a selection that you wanted to keep, so why have you
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gotten this far in the first place? If you can see a
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selection but thought you were inside it, it might be
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inverted from what you think. The easiest way to tell is
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to hit the Quick Mask button: the selected area will be
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clear and the unselected area will be masked. If this was
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the problem, then you can solve it by toggling Quick Mask
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off and choosing Invert in the <span class="guimenu">Select</span>
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<span class="term">The active drawable is not visible</span>
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<div class="informalfigure">
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<div class="mediaobject">
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<img src="../images/using/unstuck-layers-dialog-invislayer.png" />
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<div class="caption">
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Layers dialog with visibility off for the active layer.
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<span class="bold"><b>How to tell:</b></span> The Layers
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dialog gives you ability to toggle the visibility of each
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layer on or off. Look at the Layers dialog, and see
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whether the layer you are trying to act on is active
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(i.e., darkened) and has an eye symbol to the left of it.
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If not, this is your problem.
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<span class="bold"><b>How to fix:</b></span> If your
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intended target layer is not active, click on it in the
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Layers dialog to activate it. (If none of the layers
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there is active, the active drawable might be a channel --
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you can look at the Channels tab in the Layers dialog to
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see. This does not change the solution, though.) If the
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eye symbol does not appear, click in the Layers dialog at
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the left edge to toggle it: this should make the layer
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visible. See the Help section for the <a href="ch04s02.html" title="2. Layers dialog">Layers Dialog</a> if you
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<span class="term">The active drawable is transparent</span>
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<div class="informalfigure">
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<div class="mediaobject">
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<img src="../images/using/unstuck-layers-dialog-transparentlayer.png" />
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<div class="caption">
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Layers dialog with opacity set to zero for the active layer.
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<span class="bold"><b>Où est le problème?:</b></span> Si vous
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travaillez sur un calque dont l'opacité est à zéro, vous ne
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verrez aucun résultat. Vérifiez, dans la boîte de dialogue des
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calques, la position du curseur d'Opacité. S'il est complètement
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à gauche, là est le problème.
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<span class="bold"><b>How to fix:</b></span> Move the
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<span class="term">You are trying to act outside the layer</span>
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<span class="bold"><b>How to tell:</b></span> In Gimp,
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layers don't need to have the same dimensions as the
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image: they can be larger or smaller. If you try to paint
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outside the borders of a layer, nothing happens. To see
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if this is happening, look for a black-and-yellow dashed
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rectangle that does not enclose the area you're trying to
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<span class="bold"><b>How to fix:</b></span> You need to
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enlarge the layer. There are two commands at the bottom
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of the Layer menu that will let you do this: Layer to
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Image Size, which sets the layer bounds to match the image
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borders; and Layer Boundary Size, which brings up a dialog
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that allows you to set the layer dimensions to whatever
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