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5 <title>XLib Surfaces: Cairo: A Vector Graphics Library</title>
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17 <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
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18 <a href="#cairo-XLib-Surfaces.description" class="shortcut">Description</a></span>
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19 </td>
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20 <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
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21 <td><a accesskey="u" href="cairo-surfaces.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
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22 <td><a accesskey="p" href="cairo-XCB-Surfaces.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
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23 <td><a accesskey="n" href="cairo-XLib-XRender-Backend.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
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24 </tr></table>
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25 <div class="refentry">
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26 <a name="cairo-XLib-Surfaces"></a><div class="titlepage"></div>
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27 <div class="refnamediv"><table width="100%"><tr>
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28 <td valign="top">
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29 <h2><span class="refentrytitle"><a name="cairo-XLib-Surfaces.top_of_page"></a>XLib Surfaces</span></h2>
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30 <p>XLib Surfaces — X Window System rendering using XLib</p>
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31 </td>
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32 <td class="gallery_image" valign="top" align="right"></td>
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33 </tr></table></div>
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34 <div class="refsect1">
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35 <a name="cairo-XLib-Surfaces.functions"></a><h2>Functions</h2>
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36 <div class="informaltable"><table class="informaltable" width="100%" border="0">
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37 <colgroup>
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38 <col width="150px" class="functions_return">
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39 <col class="functions_name">
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40 </colgroup>
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41 <tbody>
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42 <tr>
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43 <td class="function_type">
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44 <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
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45 </td>
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46 <td class="function_name">
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47 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-create" title="cairo_xlib_surface_create ()">cairo_xlib_surface_create</a> <span class="c_punctuation">()</span>
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48 </td>
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49 </tr>
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50 <tr>
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51 <td class="function_type">
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52 <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
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53 </td>
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54 <td class="function_name">
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55 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-create-for-bitmap" title="cairo_xlib_surface_create_for_bitmap ()">cairo_xlib_surface_create_for_bitmap</a> <span class="c_punctuation">()</span>
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56 </td>
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57 </tr>
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58 <tr>
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59 <td class="function_type">
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60 <span class="returnvalue">void</span>
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61 </td>
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62 <td class="function_name">
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63 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-set-size" title="cairo_xlib_surface_set_size ()">cairo_xlib_surface_set_size</a> <span class="c_punctuation">()</span>
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64 </td>
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65 </tr>
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66 <tr>
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67 <td class="function_type">
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68 <span class="returnvalue">Display</span> *
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69 </td>
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70 <td class="function_name">
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71 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-display" title="cairo_xlib_surface_get_display ()">cairo_xlib_surface_get_display</a> <span class="c_punctuation">()</span>
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72 </td>
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73 </tr>
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74 <tr>
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75 <td class="function_type">
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76 <span class="returnvalue">Screen</span> *
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77 </td>
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78 <td class="function_name">
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79 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-screen" title="cairo_xlib_surface_get_screen ()">cairo_xlib_surface_get_screen</a> <span class="c_punctuation">()</span>
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80 </td>
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81 </tr>
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82 <tr>
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83 <td class="function_type">
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84 <span class="returnvalue">void</span>
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85 </td>
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86 <td class="function_name">
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87 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-set-drawable" title="cairo_xlib_surface_set_drawable ()">cairo_xlib_surface_set_drawable</a> <span class="c_punctuation">()</span>
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88 </td>
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89 </tr>
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90 <tr>
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91 <td class="function_type">
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92 <span class="returnvalue">Drawable</span>
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93 </td>
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94 <td class="function_name">
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95 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-drawable" title="cairo_xlib_surface_get_drawable ()">cairo_xlib_surface_get_drawable</a> <span class="c_punctuation">()</span>
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96 </td>
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97 </tr>
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98 <tr>
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99 <td class="function_type">
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100 <span class="returnvalue">Visual</span> *
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101 </td>
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102 <td class="function_name">
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103 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-visual" title="cairo_xlib_surface_get_visual ()">cairo_xlib_surface_get_visual</a> <span class="c_punctuation">()</span>
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104 </td>
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105 </tr>
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106 <tr>
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107 <td class="function_type">
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108 <span class="returnvalue">int</span>
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109 </td>
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110 <td class="function_name">
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111 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-width" title="cairo_xlib_surface_get_width ()">cairo_xlib_surface_get_width</a> <span class="c_punctuation">()</span>
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112 </td>
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113 </tr>
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114 <tr>
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115 <td class="function_type">
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116 <span class="returnvalue">int</span>
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117 </td>
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118 <td class="function_name">
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119 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-height" title="cairo_xlib_surface_get_height ()">cairo_xlib_surface_get_height</a> <span class="c_punctuation">()</span>
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120 </td>
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121 </tr>
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122 <tr>
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123 <td class="function_type">
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124 <span class="returnvalue">int</span>
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125 </td>
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126 <td class="function_name">
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127 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-get-depth" title="cairo_xlib_surface_get_depth ()">cairo_xlib_surface_get_depth</a> <span class="c_punctuation">()</span>
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128 </td>
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129 </tr>
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130 <tr>
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131 <td class="function_type">
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132 <span class="returnvalue">void</span>
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133 </td>
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134 <td class="function_name">
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135 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-device-debug-cap-xrender-version" title="cairo_xlib_device_debug_cap_xrender_version ()">cairo_xlib_device_debug_cap_xrender_version</a> <span class="c_punctuation">()</span>
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136 </td>
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137 </tr>
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138 <tr>
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139 <td class="function_type">
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140 <span class="returnvalue">int</span>
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141 </td>
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142 <td class="function_name">
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143 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-device-debug-get-precision" title="cairo_xlib_device_debug_get_precision ()">cairo_xlib_device_debug_get_precision</a> <span class="c_punctuation">()</span>
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144 </td>
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145 </tr>
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146 <tr>
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147 <td class="function_type">
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148 <span class="returnvalue">void</span>
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149 </td>
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150 <td class="function_name">
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151 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-device-debug-set-precision" title="cairo_xlib_device_debug_set_precision ()">cairo_xlib_device_debug_set_precision</a> <span class="c_punctuation">()</span>
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152 </td>
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153 </tr>
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154 </tbody>
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155 </table></div>
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156 </div>
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157 <div class="refsect1">
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158 <a name="cairo-XLib-Surfaces.other"></a><h2>Types and Values</h2>
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159 <div class="informaltable"><table class="informaltable" width="100%" border="0">
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160 <colgroup>
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161 <col width="150px" class="name">
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162 <col class="description">
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163 </colgroup>
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164 <tbody><tr>
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165 <td class="define_keyword">#define</td>
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166 <td class="function_name"><a class="link" href="cairo-XLib-Surfaces.html#CAIRO-HAS-XLIB-SURFACE:CAPS" title="CAIRO_HAS_XLIB_SURFACE">CAIRO_HAS_XLIB_SURFACE</a></td>
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167 </tr></tbody>
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168 </table></div>
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169 </div>
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170 <div class="refsect1">
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171 <a name="cairo-XLib-Surfaces.description"></a><h2>Description</h2>
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172 <p>The XLib surface is used to render cairo graphics to X Window System
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173 windows and pixmaps using the XLib library.</p>
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174 <p>Note that the XLib surface automatically takes advantage of X render extension
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175 if it is available.</p>
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176 </div>
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177 <div class="refsect1">
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178 <a name="cairo-XLib-Surfaces.functions_details"></a><h2>Functions</h2>
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179 <div class="refsect2">
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180 <a name="cairo-xlib-surface-create"></a><h3>cairo_xlib_surface_create ()</h3>
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181 <pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
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182 cairo_xlib_surface_create (<em class="parameter"><code><span class="type">Display</span> *dpy</code></em>,
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183 <em class="parameter"><code><span class="type">Drawable</span> drawable</code></em>,
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184 <em class="parameter"><code><span class="type">Visual</span> *visual</code></em>,
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185 <em class="parameter"><code><span class="type">int</span> width</code></em>,
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186 <em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
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187 <p>Creates an Xlib surface that draws to the given drawable.
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188 The way that colors are represented in the drawable is specified
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189 by the provided visual.</p>
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190 <p>Note: If <em class="parameter"><code>drawable</code></em>
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191 is a Window, then the function
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192 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-set-size" title="cairo_xlib_surface_set_size ()"><code class="function">cairo_xlib_surface_set_size()</code></a> must be called whenever the size of the
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193 window changes.</p>
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194 <p>When <em class="parameter"><code>drawable</code></em>
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195 is a Window containing child windows then drawing to
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196 the created surface will be clipped by those child windows. When
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197 the created surface is used as a source, the contents of the
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198 children will be included.</p>
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199 <div class="refsect3">
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200 <a name="cairo-xlib-surface-create.parameters"></a><h4>Parameters</h4>
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201 <div class="informaltable"><table class="informaltable" width="100%" border="0">
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202 <colgroup>
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203 <col width="150px" class="parameters_name">
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204 <col class="parameters_description">
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205 <col width="200px" class="parameters_annotations">
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206 </colgroup>
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207 <tbody>
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208 <tr>
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209 <td class="parameter_name"><p>dpy</p></td>
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210 <td class="parameter_description"><p>an X Display</p></td>
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211 <td class="parameter_annotations"> </td>
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212 </tr>
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213 <tr>
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214 <td class="parameter_name"><p>drawable</p></td>
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215 <td class="parameter_description"><p>an X Drawable, (a Pixmap or a Window)</p></td>
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216 <td class="parameter_annotations"> </td>
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217 </tr>
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218 <tr>
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219 <td class="parameter_name"><p>visual</p></td>
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220 <td class="parameter_description"><p>the visual to use for drawing to <em class="parameter"><code>drawable</code></em>
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221 . The depth
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222 of the visual must match the depth of the drawable.
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223 Currently, only TrueColor visuals are fully supported.</p></td>
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224 <td class="parameter_annotations"> </td>
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225 </tr>
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226 <tr>
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227 <td class="parameter_name"><p>width</p></td>
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228 <td class="parameter_description"><p>the current width of <em class="parameter"><code>drawable</code></em>
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229 .</p></td>
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230 <td class="parameter_annotations"> </td>
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231 </tr>
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232 <tr>
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233 <td class="parameter_name"><p>height</p></td>
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234 <td class="parameter_description"><p>the current height of <em class="parameter"><code>drawable</code></em>
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235 .</p></td>
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236 <td class="parameter_annotations"> </td>
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237 </tr>
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238 </tbody>
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239 </table></div>
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240 </div>
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241 <div class="refsect3">
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242 <a name="cairo-xlib-surface-create.returns"></a><h4>Returns</h4>
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243 <p> the newly created surface</p>
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244 </div>
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245 <p class="since">Since: 1.0</p>
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246 </div>
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247 <hr>
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248 <div class="refsect2">
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249 <a name="cairo-xlib-surface-create-for-bitmap"></a><h3>cairo_xlib_surface_create_for_bitmap ()</h3>
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250 <pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
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251 cairo_xlib_surface_create_for_bitmap (<em class="parameter"><code><span class="type">Display</span> *dpy</code></em>,
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252 <em class="parameter"><code><span class="type">Pixmap</span> bitmap</code></em>,
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253 <em class="parameter"><code><span class="type">Screen</span> *screen</code></em>,
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254 <em class="parameter"><code><span class="type">int</span> width</code></em>,
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255 <em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
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256 <p>Creates an Xlib surface that draws to the given bitmap.
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257 This will be drawn to as a <a class="link" href="cairo-Image-Surfaces.html#CAIRO-FORMAT-A1:CAPS"><code class="literal">CAIRO_FORMAT_A1</code></a> object.</p>
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258 <div class="refsect3">
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259 <a name="cairo-xlib-surface-create-for-bitmap.parameters"></a><h4>Parameters</h4>
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260 <div class="informaltable"><table class="informaltable" width="100%" border="0">
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261 <colgroup>
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262 <col width="150px" class="parameters_name">
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263 <col class="parameters_description">
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264 <col width="200px" class="parameters_annotations">
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265 </colgroup>
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266 <tbody>
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267 <tr>
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268 <td class="parameter_name"><p>dpy</p></td>
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269 <td class="parameter_description"><p>an X Display</p></td>
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270 <td class="parameter_annotations"> </td>
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271 </tr>
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272 <tr>
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273 <td class="parameter_name"><p>bitmap</p></td>
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274 <td class="parameter_description"><p>an X Drawable, (a depth-1 Pixmap)</p></td>
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275 <td class="parameter_annotations"> </td>
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276 </tr>
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277 <tr>
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278 <td class="parameter_name"><p>screen</p></td>
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279 <td class="parameter_description"><p>the X Screen associated with <em class="parameter"><code>bitmap</code></em>
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280 </p></td>
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281 <td class="parameter_annotations"> </td>
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282 </tr>
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283 <tr>
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284 <td class="parameter_name"><p>width</p></td>
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285 <td class="parameter_description"><p>the current width of <em class="parameter"><code>bitmap</code></em>
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286 .</p></td>
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287 <td class="parameter_annotations"> </td>
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288 </tr>
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289 <tr>
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290 <td class="parameter_name"><p>height</p></td>
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291 <td class="parameter_description"><p>the current height of <em class="parameter"><code>bitmap</code></em>
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292 .</p></td>
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293 <td class="parameter_annotations"> </td>
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294 </tr>
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295 </tbody>
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296 </table></div>
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297 </div>
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298 <div class="refsect3">
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299 <a name="cairo-xlib-surface-create-for-bitmap.returns"></a><h4>Returns</h4>
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300 <p> the newly created surface</p>
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301 </div>
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302 <p class="since">Since: 1.0</p>
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303 </div>
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304 <hr>
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305 <div class="refsect2">
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306 <a name="cairo-xlib-surface-set-size"></a><h3>cairo_xlib_surface_set_size ()</h3>
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307 <pre class="programlisting"><span class="returnvalue">void</span>
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308 cairo_xlib_surface_set_size (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>,
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309 <em class="parameter"><code><span class="type">int</span> width</code></em>,
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310 <em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
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311 <p>Informs cairo of the new size of the X Drawable underlying the
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312 surface. For a surface created for a Window (rather than a Pixmap),
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313 this function must be called each time the size of the window
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314 changes. (For a subwindow, you are normally resizing the window
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315 yourself, but for a toplevel window, it is necessary to listen for
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316 ConfigureNotify events.)</p>
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317 <p>A Pixmap can never change size, so it is never necessary to call
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318 this function on a surface created for a Pixmap.</p>
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319 <div class="refsect3">
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320 <a name="cairo-xlib-surface-set-size.parameters"></a><h4>Parameters</h4>
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321 <div class="informaltable"><table class="informaltable" width="100%" border="0">
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322 <colgroup>
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323 <col width="150px" class="parameters_name">
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324 <col class="parameters_description">
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325 <col width="200px" class="parameters_annotations">
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326 </colgroup>
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327 <tbody>
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328 <tr>
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329 <td class="parameter_name"><p>surface</p></td>
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330 <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> for the XLib backend</p></td>
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331 <td class="parameter_annotations"> </td>
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332 </tr>
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333 <tr>
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334 <td class="parameter_name"><p>width</p></td>
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335 <td class="parameter_description"><p>the new width of the surface</p></td>
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336 <td class="parameter_annotations"> </td>
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337 </tr>
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338 <tr>
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339 <td class="parameter_name"><p>height</p></td>
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340 <td class="parameter_description"><p>the new height of the surface</p></td>
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341 <td class="parameter_annotations"> </td>
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342 </tr>
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343 </tbody>
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344 </table></div>
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|
345 </div>
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346 <p class="since">Since: 1.0</p>
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347 </div>
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348 <hr>
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349 <div class="refsect2">
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350 <a name="cairo-xlib-surface-get-display"></a><h3>cairo_xlib_surface_get_display ()</h3>
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351 <pre class="programlisting"><span class="returnvalue">Display</span> *
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352 cairo_xlib_surface_get_display (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
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353 <p>Get the X Display for the underlying X Drawable.</p>
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354 <div class="refsect3">
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|
355 <a name="cairo-xlib-surface-get-display.parameters"></a><h4>Parameters</h4>
|
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|
356 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
357 <colgroup>
|
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|
358 <col width="150px" class="parameters_name">
|
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|
359 <col class="parameters_description">
|
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|
360 <col width="200px" class="parameters_annotations">
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|
361 </colgroup>
|
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|
362 <tbody><tr>
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|
363 <td class="parameter_name"><p>surface</p></td>
|
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|
364 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
365 <td class="parameter_annotations"> </td>
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|
366 </tr></tbody>
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|
367 </table></div>
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|
368 </div>
|
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|
369 <div class="refsect3">
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|
370 <a name="cairo-xlib-surface-get-display.returns"></a><h4>Returns</h4>
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|
371 <p> the display.</p>
|
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|
372 </div>
|
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|
373 <p class="since">Since: 1.2</p>
|
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|
374 </div>
|
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|
375 <hr>
|
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|
376 <div class="refsect2">
|
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|
377 <a name="cairo-xlib-surface-get-screen"></a><h3>cairo_xlib_surface_get_screen ()</h3>
|
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|
378 <pre class="programlisting"><span class="returnvalue">Screen</span> *
|
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379 cairo_xlib_surface_get_screen (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
|
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380 <p>Get the X Screen for the underlying X Drawable.</p>
|
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|
381 <div class="refsect3">
|
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|
382 <a name="cairo-xlib-surface-get-screen.parameters"></a><h4>Parameters</h4>
|
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|
383 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
384 <colgroup>
|
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|
385 <col width="150px" class="parameters_name">
|
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|
386 <col class="parameters_description">
|
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|
387 <col width="200px" class="parameters_annotations">
|
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|
388 </colgroup>
|
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|
389 <tbody><tr>
|
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|
390 <td class="parameter_name"><p>surface</p></td>
|
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|
391 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
392 <td class="parameter_annotations"> </td>
|
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|
393 </tr></tbody>
|
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|
394 </table></div>
|
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|
395 </div>
|
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|
396 <div class="refsect3">
|
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|
397 <a name="cairo-xlib-surface-get-screen.returns"></a><h4>Returns</h4>
|
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|
398 <p> the screen.</p>
|
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|
399 </div>
|
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|
400 <p class="since">Since: 1.2</p>
|
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|
401 </div>
|
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|
402 <hr>
|
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|
403 <div class="refsect2">
|
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|
404 <a name="cairo-xlib-surface-set-drawable"></a><h3>cairo_xlib_surface_set_drawable ()</h3>
|
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|
405 <pre class="programlisting"><span class="returnvalue">void</span>
|
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|
406 cairo_xlib_surface_set_drawable (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>,
|
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|
407 <em class="parameter"><code><span class="type">Drawable</span> drawable</code></em>,
|
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|
408 <em class="parameter"><code><span class="type">int</span> width</code></em>,
|
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|
409 <em class="parameter"><code><span class="type">int</span> height</code></em>);</pre>
|
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|
410 <p>Informs cairo of a new X Drawable underlying the
|
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|
411 surface. The drawable must match the display, screen
|
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|
412 and format of the existing drawable or the application
|
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|
413 will get X protocol errors and will probably terminate.
|
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|
414 No checks are done by this function to ensure this
|
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|
415 compatibility.</p>
|
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|
416 <div class="refsect3">
|
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|
417 <a name="cairo-xlib-surface-set-drawable.parameters"></a><h4>Parameters</h4>
|
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|
418 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
419 <colgroup>
|
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|
420 <col width="150px" class="parameters_name">
|
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|
421 <col class="parameters_description">
|
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|
422 <col width="200px" class="parameters_annotations">
|
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|
423 </colgroup>
|
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|
424 <tbody>
|
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|
425 <tr>
|
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|
426 <td class="parameter_name"><p>surface</p></td>
|
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|
427 <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> for the XLib backend</p></td>
|
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|
428 <td class="parameter_annotations"> </td>
|
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|
429 </tr>
|
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|
430 <tr>
|
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|
431 <td class="parameter_name"><p>drawable</p></td>
|
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|
432 <td class="parameter_description"><p>the new drawable for the surface</p></td>
|
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|
433 <td class="parameter_annotations"> </td>
|
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|
434 </tr>
|
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|
435 <tr>
|
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|
436 <td class="parameter_name"><p>width</p></td>
|
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|
437 <td class="parameter_description"><p>the width of the new drawable</p></td>
|
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|
438 <td class="parameter_annotations"> </td>
|
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|
439 </tr>
|
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|
440 <tr>
|
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|
441 <td class="parameter_name"><p>height</p></td>
|
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|
442 <td class="parameter_description"><p>the height of the new drawable</p></td>
|
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|
443 <td class="parameter_annotations"> </td>
|
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|
444 </tr>
|
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|
445 </tbody>
|
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|
446 </table></div>
|
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|
447 </div>
|
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|
448 <p class="since">Since: 1.0</p>
|
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|
449 </div>
|
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|
450 <hr>
|
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|
451 <div class="refsect2">
|
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|
452 <a name="cairo-xlib-surface-get-drawable"></a><h3>cairo_xlib_surface_get_drawable ()</h3>
|
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|
453 <pre class="programlisting"><span class="returnvalue">Drawable</span>
|
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|
454 cairo_xlib_surface_get_drawable (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
|
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|
455 <p>Get the underlying X Drawable used for the surface.</p>
|
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|
456 <div class="refsect3">
|
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|
457 <a name="cairo-xlib-surface-get-drawable.parameters"></a><h4>Parameters</h4>
|
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|
458 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
459 <colgroup>
|
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|
460 <col width="150px" class="parameters_name">
|
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|
461 <col class="parameters_description">
|
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|
462 <col width="200px" class="parameters_annotations">
|
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|
463 </colgroup>
|
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|
464 <tbody><tr>
|
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|
465 <td class="parameter_name"><p>surface</p></td>
|
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|
466 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
467 <td class="parameter_annotations"> </td>
|
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|
468 </tr></tbody>
|
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|
469 </table></div>
|
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|
470 </div>
|
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|
471 <div class="refsect3">
|
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|
472 <a name="cairo-xlib-surface-get-drawable.returns"></a><h4>Returns</h4>
|
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|
473 <p> the drawable.</p>
|
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|
474 </div>
|
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|
475 <p class="since">Since: 1.2</p>
|
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|
476 </div>
|
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|
477 <hr>
|
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|
478 <div class="refsect2">
|
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|
479 <a name="cairo-xlib-surface-get-visual"></a><h3>cairo_xlib_surface_get_visual ()</h3>
|
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|
480 <pre class="programlisting"><span class="returnvalue">Visual</span> *
|
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|
481 cairo_xlib_surface_get_visual (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
|
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482 <p>Gets the X Visual associated with <em class="parameter"><code>surface</code></em>
|
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483 , suitable for use with the
|
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|
484 underlying X Drawable. If <em class="parameter"><code>surface</code></em>
|
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|
485 was created by
|
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|
486 <a class="link" href="cairo-XLib-Surfaces.html#cairo-xlib-surface-create" title="cairo_xlib_surface_create ()"><code class="function">cairo_xlib_surface_create()</code></a>, the return value is the Visual passed to that
|
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|
487 constructor.</p>
|
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|
488 <div class="refsect3">
|
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|
489 <a name="cairo-xlib-surface-get-visual.parameters"></a><h4>Parameters</h4>
|
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|
490 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
491 <colgroup>
|
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|
492 <col width="150px" class="parameters_name">
|
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|
493 <col class="parameters_description">
|
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|
494 <col width="200px" class="parameters_annotations">
|
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|
495 </colgroup>
|
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|
496 <tbody><tr>
|
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|
497 <td class="parameter_name"><p>surface</p></td>
|
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|
498 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
499 <td class="parameter_annotations"> </td>
|
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|
500 </tr></tbody>
|
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|
501 </table></div>
|
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|
502 </div>
|
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|
503 <div class="refsect3">
|
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|
504 <a name="cairo-xlib-surface-get-visual.returns"></a><h4>Returns</h4>
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505 <p> the Visual or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is no appropriate Visual for
|
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506 <em class="parameter"><code>surface</code></em>
|
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|
507 .</p>
|
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|
508 </div>
|
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|
509 <p class="since">Since: 1.2</p>
|
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|
510 </div>
|
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|
511 <hr>
|
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|
512 <div class="refsect2">
|
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|
513 <a name="cairo-xlib-surface-get-width"></a><h3>cairo_xlib_surface_get_width ()</h3>
|
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|
514 <pre class="programlisting"><span class="returnvalue">int</span>
|
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|
515 cairo_xlib_surface_get_width (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
|
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516 <p>Get the width of the X Drawable underlying the surface in pixels.</p>
|
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|
517 <div class="refsect3">
|
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|
518 <a name="cairo-xlib-surface-get-width.parameters"></a><h4>Parameters</h4>
|
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|
519 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
520 <colgroup>
|
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|
521 <col width="150px" class="parameters_name">
|
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522 <col class="parameters_description">
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523 <col width="200px" class="parameters_annotations">
|
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524 </colgroup>
|
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525 <tbody><tr>
|
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526 <td class="parameter_name"><p>surface</p></td>
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527 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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528 <td class="parameter_annotations"> </td>
|
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|
529 </tr></tbody>
|
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530 </table></div>
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|
531 </div>
|
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532 <div class="refsect3">
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533 <a name="cairo-xlib-surface-get-width.returns"></a><h4>Returns</h4>
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534 <p> the width of the surface in pixels.</p>
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535 </div>
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536 <p class="since">Since: 1.2</p>
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537 </div>
|
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538 <hr>
|
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539 <div class="refsect2">
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540 <a name="cairo-xlib-surface-get-height"></a><h3>cairo_xlib_surface_get_height ()</h3>
|
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541 <pre class="programlisting"><span class="returnvalue">int</span>
|
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542 cairo_xlib_surface_get_height (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
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543 <p>Get the height of the X Drawable underlying the surface in pixels.</p>
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544 <div class="refsect3">
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545 <a name="cairo-xlib-surface-get-height.parameters"></a><h4>Parameters</h4>
|
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546 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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547 <colgroup>
|
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548 <col width="150px" class="parameters_name">
|
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549 <col class="parameters_description">
|
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550 <col width="200px" class="parameters_annotations">
|
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|
551 </colgroup>
|
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|
552 <tbody><tr>
|
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553 <td class="parameter_name"><p>surface</p></td>
|
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554 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
555 <td class="parameter_annotations"> </td>
|
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|
556 </tr></tbody>
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557 </table></div>
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558 </div>
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559 <div class="refsect3">
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560 <a name="cairo-xlib-surface-get-height.returns"></a><h4>Returns</h4>
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561 <p> the height of the surface in pixels.</p>
|
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|
562 </div>
|
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563 <p class="since">Since: 1.2</p>
|
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|
564 </div>
|
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|
565 <hr>
|
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|
566 <div class="refsect2">
|
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|
567 <a name="cairo-xlib-surface-get-depth"></a><h3>cairo_xlib_surface_get_depth ()</h3>
|
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568 <pre class="programlisting"><span class="returnvalue">int</span>
|
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569 cairo_xlib_surface_get_depth (<em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *surface</code></em>);</pre>
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570 <p>Get the number of bits used to represent each pixel value.</p>
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571 <div class="refsect3">
|
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|
572 <a name="cairo-xlib-surface-get-depth.parameters"></a><h4>Parameters</h4>
|
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573 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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574 <colgroup>
|
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575 <col width="150px" class="parameters_name">
|
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|
576 <col class="parameters_description">
|
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577 <col width="200px" class="parameters_annotations">
|
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|
578 </colgroup>
|
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|
579 <tbody><tr>
|
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|
580 <td class="parameter_name"><p>surface</p></td>
|
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|
581 <td class="parameter_description"><p>a <span class="type">cairo_xlib_surface_t</span></p></td>
|
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|
582 <td class="parameter_annotations"> </td>
|
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|
583 </tr></tbody>
|
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|
584 </table></div>
|
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|
585 </div>
|
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586 <div class="refsect3">
|
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|
587 <a name="cairo-xlib-surface-get-depth.returns"></a><h4>Returns</h4>
|
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588 <p> the depth of the surface in bits.</p>
|
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589 </div>
|
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590 <p class="since">Since: 1.2</p>
|
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|
591 </div>
|
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592 <hr>
|
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|
593 <div class="refsect2">
|
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|
594 <a name="cairo-xlib-device-debug-cap-xrender-version"></a><h3>cairo_xlib_device_debug_cap_xrender_version ()</h3>
|
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595 <pre class="programlisting"><span class="returnvalue">void</span>
|
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|
596 cairo_xlib_device_debug_cap_xrender_version
|
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597 (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *device</code></em>,
|
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598 <em class="parameter"><code><span class="type">int</span> major_version</code></em>,
|
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599 <em class="parameter"><code><span class="type">int</span> minor_version</code></em>);</pre>
|
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600 <p>Restricts all future Xlib surfaces for this devices to the specified version
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601 of the RENDER extension. This function exists solely for debugging purpose.
|
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602 It lets you find out how cairo would behave with an older version of
|
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603 the RENDER extension.</p>
|
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604 <p>Use the special values -1 and -1 for disabling the RENDER extension.</p>
|
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|
605 <div class="refsect3">
|
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|
606 <a name="cairo-xlib-device-debug-cap-xrender-version.parameters"></a><h4>Parameters</h4>
|
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|
607 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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608 <colgroup>
|
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|
609 <col width="150px" class="parameters_name">
|
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610 <col class="parameters_description">
|
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|
611 <col width="200px" class="parameters_annotations">
|
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612 </colgroup>
|
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|
613 <tbody>
|
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|
614 <tr>
|
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615 <td class="parameter_name"><p>device</p></td>
|
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616 <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> for the Xlib backend</p></td>
|
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617 <td class="parameter_annotations"> </td>
|
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|
618 </tr>
|
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|
619 <tr>
|
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620 <td class="parameter_name"><p>major_version</p></td>
|
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|
621 <td class="parameter_description"><p>major version to restrict to</p></td>
|
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|
622 <td class="parameter_annotations"> </td>
|
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|
623 </tr>
|
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|
624 <tr>
|
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|
625 <td class="parameter_name"><p>minor_version</p></td>
|
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626 <td class="parameter_description"><p>minor version to restrict to</p></td>
|
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|
627 <td class="parameter_annotations"> </td>
|
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|
628 </tr>
|
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|
629 </tbody>
|
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|
630 </table></div>
|
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|
631 </div>
|
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|
632 <p class="since">Since: 1.12</p>
|
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|
633 </div>
|
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|
634 <hr>
|
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|
635 <div class="refsect2">
|
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|
636 <a name="cairo-xlib-device-debug-get-precision"></a><h3>cairo_xlib_device_debug_get_precision ()</h3>
|
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|
637 <pre class="programlisting"><span class="returnvalue">int</span>
|
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|
638 cairo_xlib_device_debug_get_precision (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *device</code></em>);</pre>
|
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639 <p>Get the Xrender precision mode.</p>
|
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|
640 <div class="refsect3">
|
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|
641 <a name="cairo-xlib-device-debug-get-precision.parameters"></a><h4>Parameters</h4>
|
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|
642 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
643 <colgroup>
|
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|
644 <col width="150px" class="parameters_name">
|
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|
645 <col class="parameters_description">
|
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|
646 <col width="200px" class="parameters_annotations">
|
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|
647 </colgroup>
|
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|
648 <tbody><tr>
|
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|
649 <td class="parameter_name"><p>device</p></td>
|
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|
650 <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> for the Xlib backend</p></td>
|
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|
651 <td class="parameter_annotations"> </td>
|
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|
652 </tr></tbody>
|
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|
653 </table></div>
|
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|
654 </div>
|
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|
655 <div class="refsect3">
|
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|
656 <a name="cairo-xlib-device-debug-get-precision.returns"></a><h4>Returns</h4>
|
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|
657 <p> the render precision mode</p>
|
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|
658 </div>
|
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|
659 <p class="since">Since: 1.12</p>
|
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|
660 </div>
|
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|
661 <hr>
|
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|
662 <div class="refsect2">
|
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|
663 <a name="cairo-xlib-device-debug-set-precision"></a><h3>cairo_xlib_device_debug_set_precision ()</h3>
|
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|
664 <pre class="programlisting"><span class="returnvalue">void</span>
|
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|
665 cairo_xlib_device_debug_set_precision (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *device</code></em>,
|
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|
666 <em class="parameter"><code><span class="type">int</span> precision</code></em>);</pre>
|
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|
667 <p>Render supports two modes of precision when rendering trapezoids. Set
|
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|
668 the precision to the desired mode.</p>
|
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|
669 <div class="refsect3">
|
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|
670 <a name="cairo-xlib-device-debug-set-precision.parameters"></a><h4>Parameters</h4>
|
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|
671 <div class="informaltable"><table class="informaltable" width="100%" border="0">
|
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|
672 <colgroup>
|
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|
673 <col width="150px" class="parameters_name">
|
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|
674 <col class="parameters_description">
|
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|
675 <col width="200px" class="parameters_annotations">
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676 </colgroup>
|
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|
677 <tbody>
|
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|
678 <tr>
|
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|
679 <td class="parameter_name"><p>device</p></td>
|
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|
680 <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> for the Xlib backend</p></td>
|
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|
681 <td class="parameter_annotations"> </td>
|
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|
682 </tr>
|
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|
683 <tr>
|
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|
684 <td class="parameter_name"><p>precision</p></td>
|
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|
685 <td class="parameter_description"><p>the precision to use</p></td>
|
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|
686 <td class="parameter_annotations"> </td>
|
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|
687 </tr>
|
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|
688 </tbody>
|
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|
689 </table></div>
|
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|
690 </div>
|
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|
691 <p class="since">Since: 1.12</p>
|
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|
692 </div>
|
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|
693 </div>
|
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|
694 <div class="refsect1">
|
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695 <a name="cairo-XLib-Surfaces.other_details"></a><h2>Types and Values</h2>
|
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|
696 <div class="refsect2">
|
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|
697 <a name="CAIRO-HAS-XLIB-SURFACE:CAPS"></a><h3>CAIRO_HAS_XLIB_SURFACE</h3>
|
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|
698 <pre class="programlisting">#define CAIRO_HAS_XLIB_SURFACE 1
|
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|
699 </pre>
|
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|
700 <p>Defined if the Xlib surface backend is available.
|
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|
701 This macro can be used to conditionally compile backend-specific code.</p>
|
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|
702 <p class="since">Since: 1.0</p>
|
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|
703 </div>
|
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|
704 </div>
|
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|
705 <div class="refsect1">
|
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|
706 <a name="cairo-XLib-Surfaces.see-also"></a><h2>See Also</h2>
|
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|
707 <p><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a></p>
|
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|
708 </div>
|
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|
709 </div>
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710 <div class="footer">
|
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711 <hr>Generated by GTK-Doc V1.27</div>
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712 </body>
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713 </html> |