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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset="UTF-8">
<title>The m17n Library</title>
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<h1>Drawing<br>
<small>
[<a class="el" href="group__m17nGUI.html">GUI API</a>]</small>
</h1>Drawing M-texts on a window.
<a href="#_details">More...</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Data Structures</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structMDrawControl.html">MDrawControl</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Type of a text drawing control. <a href="structMDrawControl.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structMDrawMetric.html">MDrawMetric</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Type of metric for gylphs and texts. <a href="structMDrawMetric.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structMDrawGlyphInfo.html">MDrawGlyphInfo</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Type of information about a glyph. <a href="structMDrawGlyphInfo.html#_details">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structMDrawGlyph.html">MDrawGlyph</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Type of information about a glyph metric and font. <a href="structMDrawGlyph.html#_details">More...</a><br></td></tr>
<tr><td colspan="2"><br><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Window system dependent type for a window. <a href="#ga0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga1">MDrawRegion</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Window system dependent type for a region. <a href="#ga1"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga2">mdraw_text</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> win, int x, int y, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Draw an M-text on a window. <a href="#ga2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga3">mdraw_image_text</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> win, int x, int y, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Draw an M-text on a window as an image. <a href="#ga3"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> win, int x, int y, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Draw an M-text on a window with fine control. <a href="#ga4"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga5">mdraw_text_extents</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_ink_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_logical_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_line_return)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute text pixel width. <a href="#ga5"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga6">mdraw_text_per_char_extents</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *ink_array_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *logical_array_return, int array_size, int *num_chars_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_ink_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_logical_return)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute the text dimensions of each character of M-text. <a href="#ga6"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga7">mdraw_coordinates_position</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to, int x_offset, int y_offset, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the character position nearest to the coordinates. <a href="#ga7"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga8">mdraw_glyph_info</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int pos, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control, <a class="el" href="structMDrawGlyphInfo.html">MDrawGlyphInfo</a> *info)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute information about a glyph. <a href="#ga8"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga9">mdraw_glyph_list</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int from, int to, <a class="el" href="structMDrawControl.html">MDrawControl</a> *control, <a class="el" href="structMDrawGlyph.html">MDrawGlyph</a> *glyphs, int array_size, int *num_glyphs_return)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute information about glyph sequence. <a href="#ga9"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga10">mdraw_text_items</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> win, int x, int y, <a class="el" href="structMDrawTextItem.html">MDrawTextItem</a> *items, int nitems)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Draw one or more textitems. <a href="#ga10"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga11">mdraw_default_line_break</a> (<a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, int pos, int from, int to, int line, int y)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">calculate a line breaking position. <a href="#ga11"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga12">mdraw_per_char_extents</a> (<a class="el" href="group__m17nFrame.html#ga0">MFrame</a> *frame, <a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *array_return, <a class="el" href="structMDrawMetric.html">MDrawMetric</a> *overall_return)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Obtain per character dimension information. <a href="#ga12"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__m17nDraw.html#ga13">mdraw_clear_cache</a> (<a class="el" href="group__m17nMtext.html#ga0">MText</a> *mt)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">clear cached information. <a href="#ga13"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
The m17n GUI API provides functions to draw M-texts.<p>
The fonts used for drawing are selected automatically based on the fontset and the properties of a face. A face also specifies the appearance of M-texts, i.e. font size, color, underline, etc.<p>
The drawing format of M-texts can be controlled in a variety of ways, which provides powerful 2-dimensional layouting facility. <hr><h2>Typedef Documentation</h2>
<a class="anchor" name="ga0" doxytag="m17n-gui.h::MDrawWindow"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">typedef void* <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> </td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
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<td>
</td>
<td>
<p>
The type <a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> is for a window; a rectangular area that works in several ways like a miniature screen.<p>
What it actually points depends on a window system. A program that uses the m17n-X library must coerce the type <code>Drawable</code> to this type. </td>
</tr>
</table>
<a class="anchor" name="ga1" doxytag="m17n-gui.h::MDrawRegion"></a><p>
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<td class="mdRow">
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<td class="md" nowrap valign="top">typedef void* <a class="el" href="group__m17nDraw.html#ga1">MDrawRegion</a> </td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The type <a class="el" href="group__m17nDraw.html#ga1">MDrawRegion</a> is for a region; an arbitrary set of pixels on the screen (typically a rectangular area).<p>
What it actually points depends on a window system. A program that uses the m17n-X library must coerce the type <code>Region</code> to this type. </td>
</tr>
</table>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="ga2" doxytag="draw.c::mdraw_text"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">int mdraw_text </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> </td>
<td class="mdname" nowrap> <em>win</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a> function draws the text between <b>from</b> and <b>to</b> of M-text <b>mt</b> on window <b>win</b> of frame <b>frame</b> at coordinate (<b>x</b>, <b>y</b>).<p>
The appearance of the text (size, style, color, etc) is specified by the value of the text property whose key is <code>Mface</code>. If the M-text or a part of the M-text does not have such a text property, the default face of <b>frame</b> is used.<p>
The font used to draw a character in the M-text is selected from the value of the fontset property of a face by the following algorithm:<p>
<ol>
<li>
Search the text properties given to the character for the one whose key is <code>Mcharset</code>; its value should be either a symbol specifying a charset or <a class="el" href="group__m17nSymbol.html#ga1">Mnil</a>. If the value is <a class="el" href="group__m17nSymbol.html#ga1">Mnil</a>, proceed to the next step.<p>
Otherwise, search the mapping table of the fontset for the charset. If no entry is found proceed to the next step.<p>
If an entry is found, use one of the fonts in the entry that has a glyph for the character and that matches best with the face properties. If no such font exists, proceed to the next step.<p>
</li>
<li>
Get the character property "script" of the character. If it is inherited, get the script property from the previous characters. If there is no previous character, or none of them has the script property other than inherited, proceed to the next step.<p>
Search the text properties given to the character for the one whose key is <code>Mlanguage</code>; its value should be either a symbol specifying a language or <code>Mnil</code>.<p>
Search the mapping table of the fontset for the combination of the script and language. If no entry is found, proceed to the next step.<p>
If an entry is found, use one of the fonts in the entry that has a glyph for the character and that matches best with the face properties. If no such font exists, proceed to the next step.<p>
</li>
<li>
Search the fall-back table of the fontset for a font that has a glyph of the character. If such a font is found, use that font.<p>
</li>
</ol>
<p>
If no font is found by the algorithm above, this function draws an empty box for the character.<p>
This function draws only the glyph foreground. To specify the background color, use <a class="el" href="group__m17nDraw.html#ga3">mdraw_image_text()</a> or <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a>.<p>
This function is the counterpart of <code>XDrawString()</code>, <code>XmbDrawString()</code>, and <code>XwcDrawString()</code> functions in the X Window System.<p>
<dl compact><dt><b>Return value:</b></dt><dd>If the operation was successful, <a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a> returns 0. If an error is detected, it returns -1 and assigns an error code to the external variable <a class="el" href="group__m17nError.html#ga0">merror_code</a>.</dd></dl>
<dl compact><dt><b>Errors:</b></dt><dd><code>MERROR_RANGE</code> </dd></dl>
<dl compact><dt><b>See Also:</b></dt><dd><a class="el" href="group__m17nDraw.html#ga3">mdraw_image_text()</a> </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga3" doxytag="draw.c::mdraw_image_text"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_image_text </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> </td>
<td class="mdname" nowrap> <em>win</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga3">mdraw_image_text()</a> function draws the text between <b>from</b> and <b>to</b> of M-text <b>mt</b> as image on window <b>win</b> of frame <b>frame</b> at coordinate (<b>x</b>, <b>y</b>).<p>
The way to draw a text is the same as in <a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a> except that this function also draws the background with the color specified by faces.<p>
This function is the counterpart of <code>XDrawImageString()</code>, <code>XmbDrawImageString()</code>, and <code>XwcDrawImageString()</code> functions in the X Window System.<p>
<dl compact><dt><b>Return value:</b></dt><dd>If the operation was successful, <a class="el" href="group__m17nDraw.html#ga3">mdraw_image_text()</a> returns 0. If an error is detected, it returns -1 and assigns an error code to the external variable <a class="el" href="group__m17nError.html#ga0">merror_code</a>.</dd></dl>
<dl compact><dt><b>Errors:</b></dt><dd><code>MERROR_RANGE</code> </dd></dl>
<dl compact><dt><b>See Also:</b></dt><dd><a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a> </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga4" doxytag="draw.c::mdraw_text_with_control"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_text_with_control </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> </td>
<td class="mdname" nowrap> <em>win</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function draws the text between <b>from</b> and <b>to</b> of M-text <b>mt</b> on windows <b>win</b> of frame <b>frame</b> at coordinate (<b>x</b>, <b>y</b>).<p>
The way to draw a text is the same as in <a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a> except that this function also follows what specified in the drawing control object <b>control</b>.<p>
For instance, if <two_dimensional> of <b>control</b> is nonzero, this function draw an M-text 2-dimensionally, i.e., newlines in M-text breaks lines and the following characters are drawn in the next line. See the documentation of the structure @ <a class="el" href="structMDrawControl.html">MDrawControl</a> for more detail. </td>
</tr>
</table>
<a class="anchor" name="ga5" doxytag="draw.c::mdraw_text_extents"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_text_extents </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_ink_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_logical_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_line_return</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga5">mdraw_text_extents()</a> function computes the width of text between <b>from</b> and <b>to</b> of M-text <b>mt</b> when it is drawn on a window of frame <b>frame</b> using the <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function with the drawing control object <b>control</b>.<p>
If <b>overall_ink_return</b> is not <code>NULL</code>, this function also computes the bounding box of character ink of the M-text, and stores the results in the members of the structure pointed to by <b>overall_ink_return</b>. If the M-text has a face specifying a surrounding box, the box is included in the bounding box.<p>
If <b>overall_logical_return</b> is not <code>NULL</code>, this function also computes the bounding box that provides mininum spacing to other graphical features (such as surrounding box) for the M-text, and stores the results in the members of the structure pointed to by <b>overall_logical_return</b>.<p>
If <b>overall_line_return</b> is not <code>NULL</code>, this function also computes the bounding box that provides mininum spacing to the other M-text drawn, and stores the results in the members of the structure pointed to by <b>overall_line_return</b>. This is a union of <b>overall_ink_return</b> and <b>overall_logical_return</b> if the members min_line_ascent, min_line_descent, max_line_ascent, and max_line_descent of <b>control</b> are all zero.<p>
<dl compact><dt><b>Return value:</b></dt><dd>This function returns the width of the text to be drawn in the unit of pixels. If <b>control->two_dimensional</b> is nonzero and the text is drawn in multiple physical lines, it returns the width of the widest line. If an error occurs, it returns -1 and assigns an error code to the external variable <a class="el" href="group__m17nError.html#ga0">merror_code</a>.</dd></dl>
<dl compact><dt><b>Errors:</b></dt><dd><code>MERROR_RANGE</code> </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga6" doxytag="draw.c::mdraw_text_per_char_extents"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_text_per_char_extents </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>ink_array_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>logical_array_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>array_size</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>num_chars_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_ink_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_logical_return</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga6">mdraw_text_per_char_extents()</a> function computes the drawn metric of each character between <b>from</b> and <b>to</b> of M-text <b>mt</b> assuming that they are drawn on a window of frame <b>frame</b> using the <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function with the drawing control object <b>control</b>.<p>
<b>array_size</b> specifies the size of <b>ink_array_return</b> and <b>logical_array_return</b>. Each successive element of <b>ink_array_return</b> and <b>logical_array_return</b> are set to the drawn ink and logical metrics of successive characters respectively, relative to the drawing origin of the M-text. The number of elements of <b>ink_array_return</b> and <b>logical_array_return</b> that have been set is returned to <b>num_chars_return</b>.<p>
If <b>array_size</b> is too small to return all metrics, the function returns -1 and store the requested size in <b>num_chars_return</b>. Otherwise, it returns zero.<p>
If pointer <b>overall_ink_return</b> and <b>overall_logical_return</b> are not <code>NULL</code>, this function also computes the metrics of the overall text and stores the results in the members of the structure pointed to by <b>overall_ink_return</b> and <b>overall_logical_return</b>.<p>
If <b>control->two_dimensional</b> is nonzero, this function computes only the metrics of characters in the first line. </td>
</tr>
</table>
<a class="anchor" name="ga7" doxytag="draw.c::mdraw_coordinates_position"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_coordinates_position </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>x_offset</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y_offset</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga7">mdraw_coordinates_position()</a> function checks which character is to be drawn at coordinate (<b>x</b>, <b>y</b>) when the text between <b>from</b> and <b>to</b> of M-text <b>mt</b> is drawn at the coordinate (0, 0) using the <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function with the drawing control object <b>control</b>. Here, the character position means the number of characters that precede the character in question in <b>mt</b>, that is, the character position of the first character is 0.<p>
<b>frame</b> is used only to get the default face information.<p>
<dl compact><dt><b>Return value:</b></dt><dd>If the glyph image of a character covers coordinate (<b>x</b>, <b>y</b>), <a class="el" href="group__m17nDraw.html#ga7">mdraw_coordinates_position()</a> returns the character position of that character.<br>
<br>
If <b>y</b> is less than the minimum Y-coordinate of the drawn area, it returns <b>from</b>.<br>
<br>
<br>
If <b>y</b> is greater than the maximum Y-coordinate of the drawn area, it returns <b>to</b>.<br>
<br>
<br>
If <b>y</b> fits in with the drawn area but <b>x</b> is less than the minimum X-coordinate, it returns the character position of the first character drawn on the line <b>y</b>.<br>
<br>
<br>
If <b>y</b> fits in with the drawn area but <b>x</b> is greater than the maximum X-coordinate, it returns the character position of the last character drawn on the line <b>y</b>. </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga8" doxytag="draw.c::mdraw_glyph_info"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_glyph_info </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>pos</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawGlyphInfo.html">MDrawGlyphInfo</a> * </td>
<td class="mdname" nowrap> <em>info</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga8">mdraw_glyph_info()</a> function computes information about a glyph that covers a character at position <b>pos</b> of the M-text <b>mt</b> assuming that the text is drawn from the character at <b>from</b> of <b>mt</b> on a window of frame <b>frame</b> using the <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function with the drawing control object <b>control</b>.<p>
The information is stored in the members of <b>info</b>.<p>
<dl compact><dt><b>See Also:</b></dt><dd><a class="el" href="structMDrawGlyphInfo.html">MDrawGlyphInfo</a> </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga9" doxytag="draw.c::mdraw_glyph_list"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">int mdraw_glyph_list </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawControl.html">MDrawControl</a> * </td>
<td class="mdname" nowrap> <em>control</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawGlyph.html">MDrawGlyph</a> * </td>
<td class="mdname" nowrap> <em>glyphs</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>array_size</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>num_glyphs_return</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga9">mdraw_glyph_list()</a> function computes information about glyphs corresponding to the text between <b>from</b> and <b>to</b> of M-text <b>mt</b> when it is drawn on a window of frame <b>frame</b> using the <a class="el" href="group__m17nDraw.html#ga4">mdraw_text_with_control()</a> function with the drawing control object <b>control</b>. <b>glyphs</b> is an array of objects to store the information, and <b>array_size</b> is the array size.<p>
If <b>array_size</b> is large enough to cover all glyphs, it stores the number of actually filled elements in the place pointed by <b>num_glyphs_return</b>, and returns 0.<p>
Otherwise, it stores the required array size in the place pointed by <b>num_glyphs_return</b>, and returns -1.<p>
<dl compact><dt><b>See Also:</b></dt><dd><a class="el" href="structMDrawGlyph.html">MDrawGlyph</a> </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga10" doxytag="draw.c::mdraw_text_items"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void mdraw_text_items </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nDraw.html#ga0">MDrawWindow</a> </td>
<td class="mdname" nowrap> <em>win</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>x</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawTextItem.html">MDrawTextItem</a> * </td>
<td class="mdname" nowrap> <em>items</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>nitems</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga10">mdraw_text_items()</a> function draws one or more M-texts on window <b>win</b> of <b>frame</b> at coordinate (<b>x</b>, <b>y</b>). <b>items</b> is an array of the textitems to be drawn and <b>nitems</b> is the number of textimtems in the array.<p>
<dl compact><dt><b>See Also:</b></dt><dd>MTextItem, <a class="el" href="group__m17nDraw.html#ga2">mdraw_text()</a>. </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga11" doxytag="draw.c::mdraw_default_line_break"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int mdraw_default_line_break </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>pos</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>from</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>to</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>line</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>y</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The function <a class="el" href="group__m17nDraw.html#ga11">mdraw_default_line_break()</a> calculates a line breaking position based on the line number <b>line</b> and the coordinate <b>y</b>, when a line is too long to fit within the width limit. <b>pos</b> is the position of the character next to the last one that fits within the limit. <b>from</b> is the position of the first character of the line, and TO is the position of the last character displayed on the line if there were not width limit. LINE and Y are reset to 0 when a line is broken by a newline character, and incremented each time when a long line is broken because of the width limit.<p>
<dl compact><dt><b>Return value: </b></dt><dd>This function returns a character position to break the line. </dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="ga12" doxytag="draw.c::mdraw_per_char_extents"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void mdraw_per_char_extents </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nFrame.html#ga0">MFrame</a> * </td>
<td class="mdname" nowrap> <em>frame</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname" nowrap> <em>mt</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>array_return</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="structMDrawMetric.html">MDrawMetric</a> * </td>
<td class="mdname" nowrap> <em>overall_return</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga12">mdraw_per_char_extents()</a> function computes the text dimension of each character in M-text <b>mt</b>. The faces given as text properties in <b>mt</b> and the default face of frame <b>frame</b> determine the fonts to draw the text. Each successive element in <b>array_return</b> is set to the drawn metrics of successive characters, which is relative to the origin of the drawing, and a rectangle for each character in <b>mt</b>. The number of elements of <b>array_return</b> must be equal to or greater than the number of characters in <b>mt</b>.<p>
If pointer <b>overall_return</b> is not <code>NULL</code>, this function also computes the extents of the overall text and stores the results in the members of the structure pointed to by <b>overall_return</b>. </td>
</tr>
</table>
<a class="anchor" name="ga13" doxytag="draw.c::mdraw_clear_cache"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void mdraw_clear_cache </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="group__m17nMtext.html#ga0">MText</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>mt</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
The <a class="el" href="group__m17nDraw.html#ga13">mdraw_clear_cache()</a> function clear cached information on M-text <b>mt</b> that was attached by any of the drawing functions. When the behaviour of `format' or `line_break' member functions of <a class="el" href="structMDrawControl.html">MDrawControl</a> is changed, the cache must be cleared.<p>
<dl compact><dt><b>See Also:</b></dt><dd><a class="el" href="structMDrawControl.html">MDrawControl</a> </dd></dl>
</td>
</tr>
</table>
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