gtkpreview.html

最新gtk中文资料集

<a name="gtk-preview-set-gamma"></a>gtk_preview_set_gamma ()</h3>
<a class="indexterm" name="id4572396"></a><pre class="programlisting">void                gtk_preview_set_gamma               (double gamma_);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_set_gamma</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Set the gamma-correction value for all preview widgets.
(This function will eventually be replaced with a
function that sets a per-preview-widget gamma value).
The resulting intensity is given by:
<code class="literal">destination_value * pow (source_value/255, 1/gamma)</code>.
The gamma value is applied when the data is
set with <a class="link" href="GtkPreview.html#gtk-preview-draw-row"><code class="function">gtk_preview_draw_row()</code></a> so changing this
value will not affect existing data in preview
widgets.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>gamma_</code></em>&#160;:</span></p></td>
<td>the new gamma value.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572479"></a><h3>
<a name="gtk-preview-set-color-cube"></a>gtk_preview_set_color_cube ()</h3>
<a class="indexterm" name="id4572495"></a><pre class="programlisting">void                gtk_preview_set_color_cube          (<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
>guint</a> nred_shades,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
>guint</a> ngreen_shades,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
>guint</a> nblue_shades,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"
>guint</a> ngray_shades);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_set_color_cube</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This function is deprecated and does nothing. GdkRGB
automatically picks an optimium color cube for the
display.
</p>
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<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>nred_shades</code></em>&#160;:</span></p></td>
<td>ignored
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>ngreen_shades</code></em>&#160;:</span></p></td>
<td>ignored
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>nblue_shades</code></em>&#160;:</span></p></td>
<td>ignored
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>ngray_shades</code></em>&#160;:</span></p></td>
<td>ignored


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572621"></a><h3>
<a name="gtk-preview-set-install-cmap"></a>gtk_preview_set_install_cmap ()</h3>
<a class="indexterm" name="id4572637"></a><pre class="programlisting">void                gtk_preview_set_install_cmap        (<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> install_cmap);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_set_install_cmap</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This function is deprecated
and does nothing. GdkRGB will automatically pick
a private colormap if it cannot allocate sufficient
colors.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>install_cmap</code></em>&#160;:</span></p></td>
<td>ignored.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572699"></a><h3>
<a name="gtk-preview-set-reserved"></a>gtk_preview_set_reserved ()</h3>
<a class="indexterm" name="id4572715"></a><pre class="programlisting">void                gtk_preview_set_reserved            (<a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> nreserved);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_set_reserved</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This function is deprecated and does nothing.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>nreserved</code></em>&#160;:</span></p></td>
<td>ignored.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572775"></a><h3>
<a name="gtk-preview-set-dither"></a>gtk_preview_set_dither ()</h3>
<a class="indexterm" name="id4572791"></a><pre class="programlisting">void                gtk_preview_set_dither              (<a class="link" href="GtkPreview.html" title="GtkPreview">GtkPreview</a> *preview,
                                                         <a
href="/usr/share/gtk-doc/html/gdk/gdk-GdkRGB.html#GdkRgbDither"
>GdkRgbDither</a> dither);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_set_dither</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Set the dithering mode for the display. 
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>preview</code></em>&#160;:</span></p></td>
<td>a <a class="link" href="GtkPreview.html" title="GtkPreview"><span class="type">GtkPreview</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>dither</code></em>&#160;:</span></p></td>
<td>the dithering mode.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572880"></a><h3>
<a name="gtk-preview-get-visual"></a>gtk_preview_get_visual ()</h3>
<a class="indexterm" name="id4572896"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/gdk/gdk-Visuals.html#GdkVisual"
>GdkVisual</a>*          gtk_preview_get_visual              (void);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_get_visual</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Returns the visual used by preview widgets. This
function is deprecated, and you should use
<a
href="/usr/share/gtk-doc/html/gdk/gdk-GdkRGB.html#gdk-rgb-get-visual"
><code class="function">gdk_rgb_get_visual()</code></a> instead.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the visual for previews.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572959"></a><h3>
<a name="gtk-preview-get-cmap"></a>gtk_preview_get_cmap ()</h3>
<a class="indexterm" name="id4572975"></a><pre class="programlisting"><a
href="/usr/share/gtk-doc/html/gdk/gdk-Colormaps-and-Colors.html#GdkColormap"
>GdkColormap</a>*        gtk_preview_get_cmap                (void);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_get_cmap</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Returns the colormap used by preview widgets. This
function is deprecated, and you should use
<a
href="/usr/share/gtk-doc/html/gdk/gdk-GdkRGB.html#gdk-rgb-get-cmap"
><code class="function">gdk_rgb_get_cmap()</code></a> instead.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>the colormap for previews.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4573038"></a><h3>
<a name="gtk-preview-get-info"></a>gtk_preview_get_info ()</h3>
<a class="indexterm" name="id4573053"></a><pre class="programlisting"><a class="link" href="GtkPreview.html#GtkPreviewInfo">GtkPreviewInfo</a>*     gtk_preview_get_info                (void);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_get_info</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Return a <a class="link" href="GtkPreview.html#GtkPreviewInfo"><span class="type">GtkPreviewInfo</span></a> structure containing 
global information about preview widgets.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>a <a class="link" href="GtkPreview.html#GtkPreviewInfo"><span class="type">GtkPreviewInfo</span></a> structure. The return
 value belongs to GTK+ and must not be modified
 or freed.


</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4573121"></a><h3>
<a name="gtk-preview-reset"></a>gtk_preview_reset ()</h3>
<a class="indexterm" name="id4573137"></a><pre class="programlisting">void                gtk_preview_reset                   (void);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_reset</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This function is deprecated and does nothing. It was
once used for changing the colormap and visual on the fly.
</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id4573174"></a><h2>Property Details</h2>
<div class="refsect2" lang="en">
<a name="id4573184"></a><h3>
<a name="GtkPreview--expand"></a>The <code class="literal">"expand"</code> property</h3>
<a class="indexterm" name="id4573200"></a><pre class="programlisting">  "expand"                   <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a>              : Read / Write</pre>
<p>Whether the preview widget should take up the entire space it is allocated.</p>
<p>Default value: FALSE</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id4573229"></a><h2>See Also</h2>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="type">GdkRGB</span></span></p></td>
<td><p>the backend used by <a class="link" href="GtkPreview.html" title="GtkPreview"><span class="type">GtkPreview</span></a>.</p></td>
</tr></tbody>
</table></div>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id4573267"></a><div class="refsect2" lang="en"><a name="id4573268"></a></div>
<hr>
<div class="refsect2" lang="en"><a name="id4573269"></a></div>
</div>
</div>
</body>
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