505 lines
23 KiB
XML
505 lines
23 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
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<refentry id="libgimp-gimpcontext">
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<refmeta>
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<refentrytitle>gimpcontext</refentrytitle>
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<manvolnum>3</manvolnum>
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<refmiscinfo>LIBGIMP Library</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>gimpcontext</refname><refpurpose>Functions to manipulate a plug-in's context.</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>Synopsis</title>
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<synopsis>
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-push">gimp_context_push</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-pop">gimp_context_pop</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-get-foreground">gimp_context_get_foreground</link> (<link linkend="GimpRGB">GimpRGB</link> *foreground);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-foreground">gimp_context_set_foreground</link> (const <link linkend="GimpRGB">GimpRGB</link> *foreground);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-get-background">gimp_context_get_background</link> (<link linkend="GimpRGB">GimpRGB</link> *background);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-background">gimp_context_set_background</link> (const <link linkend="GimpRGB">GimpRGB</link> *background);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-default-colors">gimp_context_set_default_colors</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-swap-colors">gimp_context_swap_colors</link> (void);
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<link linkend="gdouble">gdouble</link> <link linkend="gimp-context-get-opacity">gimp_context_get_opacity</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-opacity">gimp_context_set_opacity</link> (<link linkend="gdouble">gdouble</link> opacity);
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<link linkend="GimpLayerModeEffects">GimpLayerModeEffects</link> <link linkend="gimp-context-get-paint-mode">gimp_context_get_paint_mode</link>
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(void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-paint-mode">gimp_context_set_paint_mode</link> (<link linkend="GimpLayerModeEffects">GimpLayerModeEffects</link> paint_mode);
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<link linkend="gchar">gchar</link>* <link linkend="gimp-context-get-brush">gimp_context_get_brush</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-brush">gimp_context_set_brush</link> (const <link linkend="gchar">gchar</link> *name);
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<link linkend="gchar">gchar</link>* <link linkend="gimp-context-get-pattern">gimp_context_get_pattern</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-pattern">gimp_context_set_pattern</link> (const <link linkend="gchar">gchar</link> *name);
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<link linkend="gchar">gchar</link>* <link linkend="gimp-context-get-gradient">gimp_context_get_gradient</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-gradient">gimp_context_set_gradient</link> (const <link linkend="gchar">gchar</link> *name);
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<link linkend="gchar">gchar</link>* <link linkend="gimp-context-get-palette">gimp_context_get_palette</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-palette">gimp_context_set_palette</link> (const <link linkend="gchar">gchar</link> *name);
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<link linkend="gchar">gchar</link>* <link linkend="gimp-context-get-font">gimp_context_get_font</link> (void);
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<link linkend="gboolean">gboolean</link> <link linkend="gimp-context-set-font">gimp_context_set_font</link> (const <link linkend="gchar">gchar</link> *name);
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</synopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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Functions to manipulate a plug-in's context.
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</para>
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</refsect1>
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<refsect1>
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<title>Details</title>
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<refsect2>
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<title><anchor id="gimp-context-push"/>gimp_context_push ()</title>
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<indexterm role="GIMP"><primary>gimp_context_push</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_push (void);</programlisting>
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<para>
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Pushes a context to the top of the plug-in's context stack.
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</para>
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<para>
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This procedure creates a new context by copying the current context.
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This copy becomes the new current context for the calling plug-in
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until it is popped again.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-pop"/>gimp_context_pop ()</title>
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<indexterm role="GIMP"><primary>gimp_context_pop</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_pop (void);</programlisting>
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<para>
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Pops the topmost context from the plug-in's context stack.
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</para>
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<para>
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This procedure creates a new context and makes it the current
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context for the calling plug-in.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-foreground"/>gimp_context_get_foreground ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_foreground</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_get_foreground (<link linkend="GimpRGB">GimpRGB</link> *foreground);</programlisting>
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<para>
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Get the current GIMP foreground color.
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</para>
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<para>
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This procedure returns the current GIMP foreground color. The
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foreground color is used in a variety of tools such as paint tools,
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blending, and bucket fill.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>foreground</parameter> :</term>
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<listitem><simpara> The foreground color.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-foreground"/>gimp_context_set_foreground ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_foreground</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_foreground (const <link linkend="GimpRGB">GimpRGB</link> *foreground);</programlisting>
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<para>
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Set the current GIMP foreground color.
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</para>
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<para>
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This procedure sets the current GIMP foreground color. After this is
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set, operations which use foreground such as paint tools, blending,
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and bucket fill will use the new value.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>foreground</parameter> :</term>
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<listitem><simpara> The foreground color.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-background"/>gimp_context_get_background ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_background</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_get_background (<link linkend="GimpRGB">GimpRGB</link> *background);</programlisting>
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<para>
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Get the current GIMP background color.
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</para>
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<para>
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This procedure returns the current GIMP background color. The
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background color is used in a variety of tools such as blending,
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erasing (with non-alpha images), and image filling.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>background</parameter> :</term>
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<listitem><simpara> The background color.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-background"/>gimp_context_set_background ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_background</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_background (const <link linkend="GimpRGB">GimpRGB</link> *background);</programlisting>
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<para>
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Set the current GIMP background color.
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</para>
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<para>
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This procedure sets the current GIMP background color. After this is
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set, operations which use background such as blending, filling
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images, clearing, and erasing (in non-alpha images) will use the new
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value.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>background</parameter> :</term>
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<listitem><simpara> The background color.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-default-colors"/>gimp_context_set_default_colors ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_default_colors</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_default_colors (void);</programlisting>
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<para>
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Set the current GIMP foreground and background colors to black and
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white.
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</para>
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<para>
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This procedure sets the current GIMP foreground and background
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colors to their initial default values, black and white.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-swap-colors"/>gimp_context_swap_colors ()</title>
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<indexterm role="GIMP"><primary>gimp_context_swap_colors</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_swap_colors (void);</programlisting>
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<para>
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Swap the current GIMP foreground and background colors.
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</para>
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<para>
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This procedure swaps the current GIMP foreground and background
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colors, so that the new foreground color becomes the old background
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color and vice versa.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-opacity"/>gimp_context_get_opacity ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_opacity</primary></indexterm><programlisting><link linkend="gdouble">gdouble</link> gimp_context_get_opacity (void);</programlisting>
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<para>
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Get the opacity.
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</para>
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<para>
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This procedure returns the opacity setting. The return value is a
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floating point number between 0 and 100.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The opacity.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-opacity"/>gimp_context_set_opacity ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_opacity</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_opacity (<link linkend="gdouble">gdouble</link> opacity);</programlisting>
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<para>
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Set the opacity.
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</para>
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<para>
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This procedure modifies the opacity setting. The value should be a
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floating point number between 0 and 100.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>opacity</parameter> :</term>
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<listitem><simpara> The opacity.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-paint-mode"/>gimp_context_get_paint_mode ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_paint_mode</primary></indexterm><programlisting><link linkend="GimpLayerModeEffects">GimpLayerModeEffects</link> gimp_context_get_paint_mode
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(void);</programlisting>
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<para>
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Get the paint mode.
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</para>
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<para>
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This procedure returns the paint-mode setting. The return value is
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an integer which corresponds to the values listed in the argument
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description.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The paint mode.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-paint-mode"/>gimp_context_set_paint_mode ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_paint_mode</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_paint_mode (<link linkend="GimpLayerModeEffects">GimpLayerModeEffects</link> paint_mode);</programlisting>
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<para>
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Set the paint mode.
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</para>
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<para>
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This procedure modifies the paint_mode setting.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>paint_mode</parameter> :</term>
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<listitem><simpara> The paint mode.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-brush"/>gimp_context_get_brush ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_brush</primary></indexterm><programlisting><link linkend="gchar">gchar</link>* gimp_context_get_brush (void);</programlisting>
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<para>
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Retrieve the currently active brush.
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</para>
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<para>
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This procedure returns the nme of the currently active brush. All
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paint operations and stroke operations use this brush to control the
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application of paint to the image.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The name of the active brush.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-brush"/>gimp_context_set_brush ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_brush</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_brush (const <link linkend="gchar">gchar</link> *name);</programlisting>
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<para>
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Set the specified brush as the active brush.
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</para>
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<para>
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This procedure allows the active brush to be set by specifying its
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name. The name is simply a string which corresponds to one of the
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names of the installed brushes. If there is no matching brush found,
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this procedure will return an error. Otherwise, the specified brush
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becomes active and will be used in all subsequent paint operations.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>name</parameter> :</term>
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<listitem><simpara> The name o the brush.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-pattern"/>gimp_context_get_pattern ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_pattern</primary></indexterm><programlisting><link linkend="gchar">gchar</link>* gimp_context_get_pattern (void);</programlisting>
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<para>
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Retrieve the currently active pattern.
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</para>
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<para>
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This procedure returns name of the the currently active pattern. All
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clone and bucket-fill operations with patterns will use this pattern
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to control the application of paint to the image.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The name of the active pattern.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-pattern"/>gimp_context_set_pattern ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_pattern</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_pattern (const <link linkend="gchar">gchar</link> *name);</programlisting>
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<para>
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Set the specified pattern as the active pattern.
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</para>
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<para>
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This procedure allows the active pattern to be set by specifying its
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name. The name is simply a string which corresponds to one of the
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names of the installed patterns. If there is no matching pattern
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found, this procedure will return an error. Otherwise, the specified
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pattern becomes active and will be used in all subsequent paint
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operations.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><parameter>name</parameter> :</term>
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<listitem><simpara> The name of the pattern.
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</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-get-gradient"/>gimp_context_get_gradient ()</title>
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<indexterm role="GIMP"><primary>gimp_context_get_gradient</primary></indexterm><programlisting><link linkend="gchar">gchar</link>* gimp_context_get_gradient (void);</programlisting>
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<para>
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Retrieve the currently active gradient.
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</para>
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<para>
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This procedure returns the name of the currently active gradient.</para>
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<para>
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</para><variablelist role="params">
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The name of the active gradient.
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</simpara></listitem></varlistentry>
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</variablelist><para>Since GIMP 2.2
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</para></refsect2>
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<refsect2>
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<title><anchor id="gimp-context-set-gradient"/>gimp_context_set_gradient ()</title>
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<indexterm role="GIMP"><primary>gimp_context_set_gradient</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_gradient (const <link linkend="gchar">gchar</link> *name);</programlisting>
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<para>
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|
Sets the specified gradient as the active gradient.
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</para>
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<para>
|
|
This procedure lets you set the specified gradient as the active or
|
|
\"current\" one. The name is simply a string which corresponds to
|
|
one of the loaded gradients. If no matching gradient is found, this
|
|
procedure will return an error. Otherwise, the specified gradient
|
|
will become active and will be used for subsequent custom gradient
|
|
operations.</para>
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<para>
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|
|
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</para><variablelist role="params">
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<varlistentry><term><parameter>name</parameter> :</term>
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<listitem><simpara> The name of the gradient.
|
|
</simpara></listitem></varlistentry>
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<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
|
|
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist><para>Since GIMP 2.2
|
|
</para></refsect2>
|
|
<refsect2>
|
|
<title><anchor id="gimp-context-get-palette"/>gimp_context_get_palette ()</title>
|
|
<indexterm role="GIMP"><primary>gimp_context_get_palette</primary></indexterm><programlisting><link linkend="gchar">gchar</link>* gimp_context_get_palette (void);</programlisting>
|
|
<para>
|
|
Retrieve the currently active palette.
|
|
</para>
|
|
<para>
|
|
This procedure returns the name of the the currently active palette.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The name of the active palette.
|
|
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist><para>Since GIMP 2.2
|
|
</para></refsect2>
|
|
<refsect2>
|
|
<title><anchor id="gimp-context-set-palette"/>gimp_context_set_palette ()</title>
|
|
<indexterm role="GIMP"><primary>gimp_context_set_palette</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_palette (const <link linkend="gchar">gchar</link> *name);</programlisting>
|
|
<para>
|
|
Set the specified palette as the active palette.
|
|
</para>
|
|
<para>
|
|
This procedure allows the active palette to be set by specifying its
|
|
name. The name is simply a string which corresponds to one of the
|
|
names of the installed palettes. If no matching palette is found,
|
|
this procedure will return an error. Otherwise, the specified
|
|
palette becomes active and will be used in all subsequent palette
|
|
operations.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>name</parameter> :</term>
|
|
<listitem><simpara> The name of the palette.
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
|
|
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist><para>Since GIMP 2.2
|
|
</para></refsect2>
|
|
<refsect2>
|
|
<title><anchor id="gimp-context-get-font"/>gimp_context_get_font ()</title>
|
|
<indexterm role="GIMP"><primary>gimp_context_get_font</primary></indexterm><programlisting><link linkend="gchar">gchar</link>* gimp_context_get_font (void);</programlisting>
|
|
<para>
|
|
Retrieve the currently active font.
|
|
</para>
|
|
<para>
|
|
This procedure returns the name of the currently active font.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> The name of the active font.
|
|
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist><para>Since GIMP 2.2
|
|
</para></refsect2>
|
|
<refsect2>
|
|
<title><anchor id="gimp-context-set-font"/>gimp_context_set_font ()</title>
|
|
<indexterm role="GIMP"><primary>gimp_context_set_font</primary></indexterm><programlisting><link linkend="gboolean">gboolean</link> gimp_context_set_font (const <link linkend="gchar">gchar</link> *name);</programlisting>
|
|
<para>
|
|
Set the specified font as the active font.
|
|
</para>
|
|
<para>
|
|
This procedure allows the active font to be set by specifying its
|
|
name. The name is simply a string which corresponds to one of the
|
|
names of the installed fonts. If no matching font is found, this
|
|
procedure will return an error. Otherwise, the specified font
|
|
becomes active and will be used in all subsequent font operations.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>name</parameter> :</term>
|
|
<listitem><simpara> The name of the font.
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> TRUE on success.
|
|
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist><para>Since GIMP 2.2
|
|
</para></refsect2>
|
|
|
|
</refsect1>
|
|
|
|
|
|
|
|
|
|
</refentry>
|