diff options
Diffstat (limited to 'Build/source/libs/freetype2/freetype-2.5.5/docs/reference/ft2-bitmap_handling.html')
-rw-r--r-- | Build/source/libs/freetype2/freetype-2.5.5/docs/reference/ft2-bitmap_handling.html | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/Build/source/libs/freetype2/freetype-2.5.5/docs/reference/ft2-bitmap_handling.html b/Build/source/libs/freetype2/freetype-2.5.5/docs/reference/ft2-bitmap_handling.html new file mode 100644 index 00000000000..a0eec744f33 --- /dev/null +++ b/Build/source/libs/freetype2/freetype-2.5.5/docs/reference/ft2-bitmap_handling.html @@ -0,0 +1,315 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" +"http://www.w3.org/TR/html4/loose.dtd"> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<title>FreeType-2.5.5 API Reference</title> +<style type="text/css"> + a:link { color: #0000EF; } + a:visited { color: #51188E; } + a:hover { color: #FF0000; } + + body { font-family: Verdana, Geneva, Arial, Helvetica, serif; + color: #000000; + background: #FFFFFF; + width: 87%; + margin: auto; } + + div.section { width: 75%; + margin: auto; } + div.section hr { margin: 4ex 0 1ex 0; } + div.section h4 { background-color: #EEEEFF; + font-size: medium; + font-style: oblique; + font-weight: bold; + margin: 3ex 0 1.5ex 9%; + padding: 0.3ex 0 0.3ex 1%; } + div.section p { margin: 1.5ex 0 1.5ex 10%; } + div.section pre { margin: 3ex 0 3ex 9%; + background-color: #D6E8FF; + padding: 2ex 0 2ex 1%; } + div.section table.fields { width: 90%; + margin: 1.5ex 0 1.5ex 10%; } + div.section table.toc { width: 95%; + margin: 1.5ex 0 1.5ex 5%; } + div.timestamp { text-align: center; + font-size: 69%; + margin: 1.5ex 0 1.5ex 0; } + + h1 { text-align: center; } + h3 { font-size: medium; + margin: 4ex 0 1.5ex 0; } + + p { text-align: justify; } + + pre.colored { color: blue; } + + span.keyword { font-family: monospace; + text-align: left; + white-space: pre; + color: darkblue; } + + table.fields td.val { font-weight: bold; + text-align: right; + width: 30%; + vertical-align: baseline; + padding: 1ex 1em 1ex 0; } + table.fields td.desc { vertical-align: baseline; + padding: 1ex 0 1ex 1em; } + table.fields td.desc p:first-child { margin: 0; } + table.fields td.desc p { margin: 1.5ex 0 0 0; } + table.index { margin: 6ex auto 6ex auto; + border: 0; + border-collapse: separate; + border-spacing: 1em 0.3ex; } + table.index tr { padding: 0; } + table.index td { padding: 0; } + table.index-toc-link { width: 100%; + border: 0; + border-spacing: 0; + margin: 1ex 0 1ex 0; } + table.index-toc-link td.left { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: left; } + table.index-toc-link td.middle { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: center; } + table.index-toc-link td.right { padding: 0 0.5em 0 0.5em; + font-size: 83%; + text-align: right; } + table.synopsis { margin: 6ex auto 6ex auto; + border: 0; + border-collapse: separate; + border-spacing: 2em 0.6ex; } + table.synopsis tr { padding: 0; } + table.synopsis td { padding: 0; } + table.toc td.link { width: 30%; + text-align: right; + vertical-align: baseline; + padding: 1ex 1em 1ex 0; } + table.toc td.desc { vertical-align: baseline; + padding: 1ex 0 1ex 1em; + text-align: left; } + table.toc td.desc p:first-child { margin: 0; + text-align: left; } + table.toc td.desc p { margin: 1.5ex 0 0 0; + text-align: left; } + +</style> +</head> +<body> + +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table> +<h1>FreeType-2.5.5 API Reference</h1> + +<h1>Bitmap Handling</h1> +<h2>Synopsis</h2> +<table class="synopsis"> +<tr><td><a href="#FT_Bitmap_New">FT_Bitmap_New</a></td><td><a href="#FT_Bitmap_Embolden">FT_Bitmap_Embolden</a></td><td><a href="#FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</a></td></tr> +<tr><td><a href="#FT_Bitmap_Copy">FT_Bitmap_Copy</a></td><td><a href="#FT_Bitmap_Convert">FT_Bitmap_Convert</a></td><td><a href="#FT_Bitmap_Done">FT_Bitmap_Done</a></td></tr> +</table> + + +<p>This section contains functions for handling <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> objects. Note that none of the functions changes the bitmap's ‘flow’ (as indicated by the sign of the ‘pitch’ field in ‘FT_Bitmap’).</p> + +<div class="section"> +<h3 id="FT_Bitmap_New">FT_Bitmap_New</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <span class="keyword">void</span> ) + <b>FT_Bitmap_New</b>( <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *abitmap ); +</pre> + +<p>Initialize a pointer to an <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> structure.</p> + +<h4>inout</h4> +<table class="fields"> +<tr><td class="val" id="abitmap">abitmap</td><td class="desc"> +<p>A pointer to the bitmap structure.</p> +</td></tr> +</table> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_Bitmap_Copy">FT_Bitmap_Copy</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Bitmap_Copy</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a> library, + <span class="keyword">const</span> <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *source, + <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *target); +</pre> + +<p>Copy a bitmap into another one.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="library">library</td><td class="desc"> +<p>A handle to a library object.</p> +</td></tr> +<tr><td class="val" id="source">source</td><td class="desc"> +<p>A handle to the source bitmap.</p> +</td></tr> +</table> + +<h4>output</h4> +<table class="fields"> +<tr><td class="val" id="target">target</td><td class="desc"> +<p>A handle to the target bitmap.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_Bitmap_Embolden">FT_Bitmap_Embolden</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Bitmap_Embolden</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a> library, + <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a>* bitmap, + <a href="ft2-basic_types.html#FT_Pos">FT_Pos</a> xStrength, + <a href="ft2-basic_types.html#FT_Pos">FT_Pos</a> yStrength ); +</pre> + +<p>Embolden a bitmap. The new bitmap will be about ‘xStrength’ pixels wider and ‘yStrength’ pixels higher. The left and bottom borders are kept unchanged.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="library">library</td><td class="desc"> +<p>A handle to a library object.</p> +</td></tr> +<tr><td class="val" id="xStrength">xStrength</td><td class="desc"> +<p>How strong the glyph is emboldened horizontally. Expressed in 26.6 pixel format.</p> +</td></tr> +<tr><td class="val" id="yStrength">yStrength</td><td class="desc"> +<p>How strong the glyph is emboldened vertically. Expressed in 26.6 pixel format.</p> +</td></tr> +</table> + +<h4>inout</h4> +<table class="fields"> +<tr><td class="val" id="bitmap">bitmap</td><td class="desc"> +<p>A handle to the target bitmap.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>The current implementation restricts ‘xStrength’ to be less than or equal to 8 if bitmap is of pixel_mode <a href="ft2-basic_types.html#FT_Pixel_Mode">FT_PIXEL_MODE_MONO</a>.</p> +<p>If you want to embolden the bitmap owned by a <a href="ft2-base_interface.html#FT_GlyphSlotRec">FT_GlyphSlotRec</a>, you should call <a href="ft2-bitmap_handling.html#FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</a> on the slot first.</p> +<p>Bitmaps in <a href="ft2-basic_types.html#FT_Pixel_Mode">FT_PIXEL_MODE_GRAY2</a> and <a href="ft2-basic_types.html#FT_Pixel_Mode">FT_PIXEL_MODE_GRAY</a>@ format are converted to <a href="ft2-basic_types.html#FT_Pixel_Mode">FT_PIXEL_MODE_GRAY</a> format (i.e., 8bpp).</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_Bitmap_Convert">FT_Bitmap_Convert</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Bitmap_Convert</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a> library, + <span class="keyword">const</span> <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *source, + <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *target, + <a href="ft2-basic_types.html#FT_Int">FT_Int</a> alignment ); +</pre> + +<p>Convert a bitmap object with depth 1bpp, 2bpp, 4bpp, 8bpp or 32bpp to a bitmap object with depth 8bpp, making the number of used bytes line (a.k.a. the ‘pitch’) a multiple of ‘alignment’.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="library">library</td><td class="desc"> +<p>A handle to a library object.</p> +</td></tr> +<tr><td class="val" id="source">source</td><td class="desc"> +<p>The source bitmap.</p> +</td></tr> +<tr><td class="val" id="alignment">alignment</td><td class="desc"> +<p>The pitch of the bitmap is a multiple of this parameter. Common values are 1, 2, or 4.</p> +</td></tr> +</table> + +<h4>output</h4> +<table class="fields"> +<tr><td class="val" id="target">target</td><td class="desc"> +<p>The target bitmap.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>It is possible to call <a href="ft2-bitmap_handling.html#FT_Bitmap_Convert">FT_Bitmap_Convert</a> multiple times without calling <a href="ft2-bitmap_handling.html#FT_Bitmap_Done">FT_Bitmap_Done</a> (the memory is simply reallocated).</p> +<p>Use <a href="ft2-bitmap_handling.html#FT_Bitmap_Done">FT_Bitmap_Done</a> to finally remove the bitmap object.</p> +<p>The ‘library’ argument is taken to have access to FreeType's memory handling functions.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_GlyphSlot_Own_Bitmap">FT_GlyphSlot_Own_Bitmap</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_GlyphSlot_Own_Bitmap</b>( <a href="ft2-base_interface.html#FT_GlyphSlot">FT_GlyphSlot</a> slot ); +</pre> + +<p>Make sure that a glyph slot owns ‘slot->bitmap’.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="slot">slot</td><td class="desc"> +<p>The glyph slot.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>This function is to be used in combination with <a href="ft2-bitmap_handling.html#FT_Bitmap_Embolden">FT_Bitmap_Embolden</a>.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +<div class="section"> +<h3 id="FT_Bitmap_Done">FT_Bitmap_Done</h3> +<p>Defined in FT_BITMAP_H (ftbitmap.h).</p> +<pre> + FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> ) + <b>FT_Bitmap_Done</b>( <a href="ft2-base_interface.html#FT_Library">FT_Library</a> library, + <a href="ft2-basic_types.html#FT_Bitmap">FT_Bitmap</a> *bitmap ); +</pre> + +<p>Destroy a bitmap object created with <a href="ft2-bitmap_handling.html#FT_Bitmap_New">FT_Bitmap_New</a>.</p> + +<h4>input</h4> +<table class="fields"> +<tr><td class="val" id="library">library</td><td class="desc"> +<p>A handle to a library object.</p> +</td></tr> +<tr><td class="val" id="bitmap">bitmap</td><td class="desc"> +<p>The bitmap object to be freed.</p> +</td></tr> +</table> + +<h4>return</h4> +<p>FreeType error code. 0 means success.</p> + +<h4>note</h4> +<p>The ‘library’ argument is taken to have access to FreeType's memory handling functions.</p> + +<hr> +<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div> + +</body> +</html> |