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398 lines
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<div class="refentry" title="gimpgradients">
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<a name="libgimp-gimpgradients"></a><div class="titlepage"></div>
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<div class="refnamediv"><table width="100%"><tr>
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<td valign="top">
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<h2><span class="refentrytitle"><a name="libgimp-gimpgradients.top_of_page"></a>gimpgradients</span></h2>
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<p>gimpgradients — Operations related to gradients.</p>
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</td>
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<td valign="top" align="right"></td>
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<div class="refsynopsisdiv" title="Synopsis">
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<a name="libgimp-gimpgradients.synopsis"></a><h2>Synopsis</h2>
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<pre class="synopsis">
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-refresh" title="gimp_gradients_refresh ()">gimp_gradients_refresh</a> (void);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a>** <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-get-list" title="gimp_gradients_get_list ()">gimp_gradients_get_list</a> (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *filter,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> *num_gradients);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> * <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-get-gradient" title="gimp_gradients_get_gradient ()">gimp_gradients_get_gradient</a> (void);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-set-gradient" title="gimp_gradients_set_gradient ()">gimp_gradients_set_gradient</a> (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *name);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a>* <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-sample-uniform" title="gimp_gradients_sample_uniform ()">gimp_gradients_sample_uniform</a> (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> num_samples,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> reverse);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a>* <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-sample-custom" title="gimp_gradients_sample_custom ()">gimp_gradients_sample_custom</a> (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> num_samples,
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const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a> *positions,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> reverse);
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a>* <a class="link" href="libgimp-gimpgradients.html#gimp-gradients-get-gradient-data" title="gimp_gradients_get_gradient_data ()">gimp_gradients_get_gradient_data</a> (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *name,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> sample_size,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> reverse,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> *width,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a> **grad_data);
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</pre>
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</div>
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<div class="refsect1" title="Description">
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<a name="libgimp-gimpgradients.description"></a><h2>Description</h2>
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<p>
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Operations related to gradients.
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</p>
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</div>
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<div class="refsect1" title="Details">
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<a name="libgimp-gimpgradients.details"></a><h2>Details</h2>
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<div class="refsect2" title="gimp_gradients_refresh ()">
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<a name="gimp-gradients-refresh"></a><h3>gimp_gradients_refresh ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> gimp_gradients_refresh (void);</pre>
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<p>
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Refresh current gradients. This function always succeeds.
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</p>
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<p>
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This procedure retrieves all gradients currently in the user's
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gradient path and updates the gradient dialogs accordingly.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody><tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> TRUE on success.
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</td>
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</tr></tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_get_list ()">
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<a name="gimp-gradients-get-list"></a><h3>gimp_gradients_get_list ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a>** gimp_gradients_get_list (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *filter,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> *num_gradients);</pre>
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<p>
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Retrieve the list of loaded gradients.
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</p>
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<p>
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This procedure returns a list of the gradients that are currently
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loaded. You can later use the <a class="link" href="libgimp-gimpcontext.html#gimp-context-set-gradient" title="gimp_context_set_gradient ()"><code class="function">gimp_context_set_gradient()</code></a> function
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to set the active gradient.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>filter</code></em> :</span></p></td>
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<td> An optional regular expression used to filter the list.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>num_gradients</code></em> :</span></p></td>
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<td> The number of loaded gradients.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> The list of gradient names.
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_get_gradient ()">
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<a name="gimp-gradients-get-gradient"></a><h3>gimp_gradients_get_gradient ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> * gimp_gradients_get_gradient (void);</pre>
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<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
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<h3 class="title">Warning</h3>
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<p><code class="literal">gimp_gradients_get_gradient</code> is deprecated and should not be used in newly-written code.</p>
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</div>
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<p>
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This procedure is deprecated! Use <a class="link" href="libgimp-gimpcontext.html#gimp-context-get-gradient" title="gimp_context_get_gradient ()"><code class="function">gimp_context_get_gradient()</code></a> instead.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody><tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> The name of the active gradient.
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</td>
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</tr></tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_set_gradient ()">
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<a name="gimp-gradients-set-gradient"></a><h3>gimp_gradients_set_gradient ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> gimp_gradients_set_gradient (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *name);</pre>
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<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
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<h3 class="title">Warning</h3>
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<p><code class="literal">gimp_gradients_set_gradient</code> is deprecated and should not be used in newly-written code.</p>
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</div>
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<p>
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This procedure is deprecated! Use <a class="link" href="libgimp-gimpcontext.html#gimp-context-set-gradient" title="gimp_context_set_gradient ()"><code class="function">gimp_context_set_gradient()</code></a> instead.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
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<td> The name of the gradient to set.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> TRUE on success.
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_sample_uniform ()">
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<a name="gimp-gradients-sample-uniform"></a><h3>gimp_gradients_sample_uniform ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a>* gimp_gradients_sample_uniform (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> num_samples,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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>gboolean</a> reverse);</pre>
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<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
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<h3 class="title">Warning</h3>
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<p><code class="literal">gimp_gradients_sample_uniform</code> is deprecated and should not be used in newly-written code.</p>
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</div>
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<p>
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This procedure is deprecated! Use
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<a class="link" href="libgimp-gimpgradient.html#gimp-gradient-get-uniform-samples" title="gimp_gradient_get_uniform_samples ()"><code class="function">gimp_gradient_get_uniform_samples()</code></a> instead.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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<tbody>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>num_samples</code></em> :</span></p></td>
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<td> The number of samples to take.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>reverse</code></em> :</span></p></td>
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<td> Use the reverse gradient.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }.
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_sample_custom ()">
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<a name="gimp-gradients-sample-custom"></a><h3>gimp_gradients_sample_custom ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a>* gimp_gradients_sample_custom (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> num_samples,
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const <a
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||
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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>gdouble</a> *positions,
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<a
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||
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
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||
>gboolean</a> reverse);</pre>
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<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
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<h3 class="title">Warning</h3>
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<p><code class="literal">gimp_gradients_sample_custom</code> is deprecated and should not be used in newly-written code.</p>
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</div>
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<p>
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This procedure is deprecated! Use <a class="link" href="libgimp-gimpgradient.html#gimp-gradient-get-custom-samples" title="gimp_gradient_get_custom_samples ()"><code class="function">gimp_gradient_get_custom_samples()</code></a>
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instead.</p>
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||
<p>
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||
</p>
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||
<div class="variablelist"><table border="0">
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||
<col align="left" valign="top">
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<tbody>
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||
<tr>
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<td><p><span class="term"><em class="parameter"><code>num_samples</code></em> :</span></p></td>
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<td> The number of samples to take.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>positions</code></em> :</span></p></td>
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<td> The list of positions to sample along the gradient.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><em class="parameter"><code>reverse</code></em> :</span></p></td>
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<td> Use the reverse gradient.
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</td>
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</tr>
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<tr>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
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<td> Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }.
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<hr>
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<div class="refsect2" title="gimp_gradients_get_gradient_data ()">
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<a name="gimp-gradients-get-gradient-data"></a><h3>gimp_gradients_get_gradient_data ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a>* gimp_gradients_get_gradient_data (const <a
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||
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"
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>gchar</a> *name,
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<a
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||
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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>gint</a> sample_size,
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<a
|
||
href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"
|
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>gboolean</a> reverse,
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<a
|
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
|
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>gint</a> *width,
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<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
|
||
>gdouble</a> **grad_data);</pre>
|
||
<div class="warning" title="Warning" style="margin-left: 0.5in; margin-right: 0.5in;">
|
||
<h3 class="title">Warning</h3>
|
||
<p><code class="literal">gimp_gradients_get_gradient_data</code> is deprecated and should not be used in newly-written code.</p>
|
||
</div>
|
||
<p>
|
||
This procedure is deprecated! Use
|
||
<a class="link" href="libgimp-gimpgradient.html#gimp-gradient-get-uniform-samples" title="gimp_gradient_get_uniform_samples ()"><code class="function">gimp_gradient_get_uniform_samples()</code></a> instead.</p>
|
||
<p>
|
||
</p>
|
||
<div class="variablelist"><table border="0">
|
||
<col align="left" valign="top">
|
||
<tbody>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
|
||
<td> The gradient name (\"\" means current active gradient).
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>sample_size</code></em> :</span></p></td>
|
||
<td> Size of the sample to return when the gradient is changed.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>reverse</code></em> :</span></p></td>
|
||
<td> Use the reverse gradient.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
|
||
<td> The gradient sample width (r,g,b,a).
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><em class="parameter"><code>grad_data</code></em> :</span></p></td>
|
||
<td> The gradient sample data.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
|
||
<td> The gradient name.
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
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