pango-glyph-storage.html

linux

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<td><span class="term">double&#160;<em class="structfield"><code>xx</code></em>;</span></td>
<td> 1st component of the transformation matrix
</td>
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<td><span class="term">double&#160;<em class="structfield"><code>xy</code></em>;</span></td>
<td> 2nd component of the transformation matrix
</td>
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<td><span class="term">double&#160;<em class="structfield"><code>yx</code></em>;</span></td>
<td> 3rd component of the transformation matrix
</td>
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<td><span class="term">double&#160;<em class="structfield"><code>yy</code></em>;</span></td>
<td> 4th component of the transformation matrix
</td>
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<td><span class="term">double&#160;<em class="structfield"><code>x0</code></em>;</span></td>
<td> x translation
</td>
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<td><span class="term">double&#160;<em class="structfield"><code>y0</code></em>;</span></td>
<td> y translation
</td>
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</table></div>
<p class="since">Since  1.6
</p>
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<div class="refsect2" lang="en">
<a name="id3100415"></a><h3>
<a name="PANGO-TYPE-MATRIX:CAPS"></a>PANGO_TYPE_MATRIX</h3>
<a class="indexterm" name="id3100428"></a><pre class="programlisting">#define PANGO_TYPE_MATRIX (pango_matrix_get_type ())
</pre>
<p>
The GObject type for <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a></p>
<p>

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<div class="refsect2" lang="en">
<a name="id3100454"></a><h3>
<a name="PANGO-MATRIX-INIT:CAPS"></a>PANGO_MATRIX_INIT</h3>
<a class="indexterm" name="id3100470"></a><pre class="programlisting">#define PANGO_MATRIX_INIT { 1., 0., 0., 1., 0., 0. }
</pre>
<p>
Constant that can be used to initialize a PangoMatrix to
the identity transform.
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
PangoMatrix matrix = PANGO_MATRIX_INIT;
pango_matrix_rotate (&amp;matrix, 45.);
</pre></div>
<p>

</p>
<p class="since">Since  1.6
</p>
</div>
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<div class="refsect2" lang="en">
<a name="id3100508"></a><h3>
<a name="pango-matrix-copy"></a>pango_matrix_copy ()</h3>
<a class="indexterm" name="id3100523"></a><pre class="programlisting"><a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a>*        pango_matrix_copy                   (const <a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix);</pre>
<p>
Copies a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>.</p>
<p>

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<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>, can be <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
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<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the newly allocated <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>, which should
              be freed with <a href="pango-Glyph-Storage.html#pango-matrix-free"><code class="function">pango_matrix_free()</code></a>, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a> if
              <em class="parameter"><code>matrix</code></em> was <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>.

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</tbody>
</table></div>
<p class="since">Since  1.6
</p>
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<hr>
<div class="refsect2" lang="en">
<a name="id3100661"></a><h3>
<a name="pango-matrix-free"></a>pango_matrix_free ()</h3>
<a class="indexterm" name="id3100676"></a><pre class="programlisting">void                pango_matrix_free                   (<a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix);</pre>
<p>
Free a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a> created with <a href="pango-Glyph-Storage.html#pango-matrix-copy"><code class="function">pango_matrix_copy()</code></a>.
Does nothing if <em class="parameter"><code>matrix</code></em> is <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr></tbody>
</table></div>
<p class="since">Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3100785"></a><h3>
<a name="pango-matrix-translate"></a>pango_matrix_translate ()</h3>
<a class="indexterm" name="id3100800"></a><pre class="programlisting">void                pango_matrix_translate              (<a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix,
                                                         double tx,
                                                         double ty);</pre>
<p>
Changes the transformation represented by <em class="parameter"><code>matrix</code></em> to be the
transformation given by first translating by (<em class="parameter"><code>tx</code></em>, <em class="parameter"><code>ty</code></em>)
then applying the original transformation.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>
</td>
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<td><span class="term"><em class="parameter"><code>tx</code></em>&#160;:</span></td>
<td> amount to translate in the X direction
</td>
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<td><span class="term"><em class="parameter"><code>ty</code></em>&#160;:</span></td>
<td> amount to translate in the Y direction
</td>
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</tbody>
</table></div>
<p class="since">Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3100927"></a><h3>
<a name="pango-matrix-scale"></a>pango_matrix_scale ()</h3>
<a class="indexterm" name="id3100943"></a><pre class="programlisting">void                pango_matrix_scale                  (<a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix,
                                                         double scale_x,
                                                         double scale_y);</pre>
<p>
Changes the transformation represented by <em class="parameter"><code>matrix</code></em> to be the
transformation given by first scaling by <em class="parameter"><code>sx</code></em> in the X direction
and <em class="parameter"><code>sy</code></em> in the Y direction then applying the original
transformation.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>
</td>
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<td><span class="term"><em class="parameter"><code>scale_x</code></em>&#160;:</span></td>
<td> amount to scale by in X direction
</td>
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<td><span class="term"><em class="parameter"><code>scale_y</code></em>&#160;:</span></td>
<td> amount to scale by in Y direction
</td>
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</tbody>
</table></div>
<p class="since">Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3101072"></a><h3>
<a name="pango-matrix-rotate"></a>pango_matrix_rotate ()</h3>
<a class="indexterm" name="id3101087"></a><pre class="programlisting">void                pango_matrix_rotate                 (<a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix,
                                                         double degrees);</pre>
<p>
Changes the transformation represented by <em class="parameter"><code>matrix</code></em> to be the
transformation given by first rotating by <em class="parameter"><code>degrees</code></em> degrees
counter-clockwise then applying the original transformation.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>
</td>
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<td><span class="term"><em class="parameter"><code>degrees</code></em>&#160;:</span></td>
<td> degrees to rotate counter-clockwise
</td>
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</tbody>
</table></div>
<p class="since">Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3101187"></a><h3>
<a name="pango-matrix-concat"></a>pango_matrix_concat ()</h3>
<a class="indexterm" name="id3101203"></a><pre class="programlisting">void                pango_matrix_concat                 (<a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix,
                                                         const <a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *new_matrix);</pre>
<p>
Changes the transformation represented by <em class="parameter"><code>matrix</code></em> to be the
transformation given by first applying transformation
given by <em class="parameter"><code>new_matrix</code></em> then applying the original transformation.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>
</td>
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<td><span class="term"><em class="parameter"><code>new_matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3101310"></a><h3>
<a name="pango-matrix-transform-point"></a>pango_matrix_transform_point ()</h3>
<a class="indexterm" name="id3101325"></a><pre class="programlisting">void                pango_matrix_transform_point        (const <a href="pango-Glyph-Storage.html#PangoMatrix">PangoMatrix</a> *matrix,
                                                         double *x,
                                                         double *y);</pre>
<p>
Transforms the point (<em class="parameter"><code>x</code></em>, <em class="parameter"><code>y</code></em>) by <em class="parameter"><code>matrix</code></em>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
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<td><span class="term"><em class="parameter"><code>matrix</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
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