gtkpreview.html

最新gtk中文资料集

  gushort s[2];
  guchar c[4];
};
</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">GtkDitherInfo</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This union not used in GTK+.
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4571487"></a><h3>
<a name="gtk-preview-uninit"></a>gtk_preview_uninit ()</h3>
<a class="indexterm" name="id4571503"></a><pre class="programlisting">void                gtk_preview_uninit                  (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_uninit</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
This function is deprecated and does nothing.
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4571537"></a><h3>
<a name="gtk-preview-new"></a>gtk_preview_new ()</h3>
<a class="indexterm" name="id4571552"></a><pre class="programlisting"><a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>*          gtk_preview_new                     (<a class="link" href="gtk-Standard-Enumerations.html#GtkPreviewType">GtkPreviewType</a> type);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_new</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Create a new preview widget.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em>&#160;:</span></p></td>
<td>the type data contained by the widget. 
(Grayscale or RGB)
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
<td>a new <a class="link" href="GtkPreview.html" title="GtkPreview"><span class="type">GtkPreview</span></a>


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4571631"></a><h3>
<a name="gtk-preview-size"></a>gtk_preview_size ()</h3>
<a class="indexterm" name="id4571646"></a><pre class="programlisting">void                gtk_preview_size                    (<a class="link" href="GtkPreview.html" title="GtkPreview">GtkPreview</a> *preview,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> width,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> height);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_size</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Set the size that the preview widget will request
in response to a "size_request" signal. The 
drawing area may actually be allocated a size
larger than this depending on how it is packed
within the enclosing containers. The effect
of this is determined by whether the preview
is set to expand or not (see <code class="function">gtk_preview_expand()</code>)
</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>width</code></em>&#160;:</span></p></td>
<td>the new width.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em>&#160;:</span></p></td>
<td>the new height.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4571774"></a><h3>
<a name="gtk-preview-put"></a>gtk_preview_put ()</h3>
<a class="indexterm" name="id4571789"></a><pre class="programlisting">void                gtk_preview_put                     (<a class="link" href="GtkPreview.html" title="GtkPreview">GtkPreview</a> *preview,
                                                         <a
href="/usr/share/gtk-doc/html/gdk/gdk-Windows.html#GdkWindow"
>GdkWindow</a> *window,
                                                         <a
href="/usr/share/gtk-doc/html/gdk/gdk-Graphics-Contexts.html#GdkGC"
>GdkGC</a> *gc,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> srcx,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> srcy,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> destx,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> desty,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> width,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> height);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_put</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Takes a portion of the contents of a preview widget
and draws it onto the given drawable, <em class="parameter"><code>window</code></em>.
</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>window</code></em>&#160;:</span></p></td>
<td>a window or pixmap.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>gc</code></em>&#160;:</span></p></td>
<td>The graphics context for the operation. Only the
     clip mask for this GC matters.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>srcx</code></em>&#160;:</span></p></td>
<td>the x coordinate of the upper left corner in the source image.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>srcy</code></em>&#160;:</span></p></td>
<td>the y coordinate of the upper left corner in the source image.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>destx</code></em>&#160;:</span></p></td>
<td>the x coordinate of the upper left corner in the destination image.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>desty</code></em>&#160;:</span></p></td>
<td>the y coordinate of the upper left corner in the destination image.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em>&#160;:</span></p></td>
<td>the width of the rectangular portion to draw.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em>&#160;:</span></p></td>
<td>the height of the rectangular portion to draw.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572042"></a><h3>
<a name="gtk-preview-draw-row"></a>gtk_preview_draw_row ()</h3>
<a class="indexterm" name="id4572058"></a><pre class="programlisting">void                gtk_preview_draw_row                (<a class="link" href="GtkPreview.html" title="GtkPreview">GtkPreview</a> *preview,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"
>guchar</a> *data,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> x,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> y,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"
>gint</a> w);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gtk_preview_draw_row</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Sets the data for a portion of a row.
</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>data</code></em>&#160;:</span></p></td>
<td>the new data for the portion. It should contain
       <em class="parameter"><code>w</code></em> bytes of data if the preview is of type
       GTK_TYPE_GRAYSCALE, and 3*<em class="parameter"><code>w</code></em> bytes of data
       if the preview is of type GTK_TYPE_COLOR.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>x</code></em>&#160;:</span></p></td>
<td>the starting value on the row to set.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>y</code></em>&#160;:</span></p></td>
<td>the row to change.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>w</code></em>&#160;:</span></p></td>
<td>the number of pixels in the row to change.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572225"></a><h3>
<a name="gtk-preview-set-expand"></a>gtk_preview_set_expand ()</h3>
<a class="indexterm" name="id4572241"></a><pre class="programlisting">void                gtk_preview_set_expand              (<a class="link" href="GtkPreview.html" title="GtkPreview">GtkPreview</a> *preview,
                                                         <a
href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"
>gboolean</a> expand);</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_expand</code> is deprecated and should not be used in newly-written code.</p>
</div>
<p>
Determines the way that the the preview widget behaves
when the size it is allocated is larger than the requested
size. If <em class="parameter"><code>expand</code></em> is <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"
><code class="literal">FALSE</code></a>, then the preview's window
and buffer will be no larger than the size set with 
<a class="link" href="GtkPreview.html#gtk-preview-size"><code class="function">gtk_preview_size()</code></a>, and the data set will be centered
in the allocation if it is larger. If <em class="parameter"><code>expand</code></em> is <a
href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a>
then the window and buffer will expand with the allocation;
the application is responsible for catching
the "size_allocate" signal and providing the data 
appropriate for this size.
</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>expand</code></em>&#160;:</span></p></td>
<td>whether the preview's window should expand or not.


</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id4572380"></a><h3>