magnifier-main_8c-source.html

在Linux下实现magnification功能

<a name="l00074"></a><a class="code" href="structMagnifierOptions.html#e5914d18ce62aebb0f23837bef3d6e00">00074</a>         gboolean  print_version;
<a name="l00075"></a>00075 } <a class="code" href="structMagnifierOptions.html">MagnifierOptions</a>;
<a name="l00076"></a>00076 
<a name="l00077"></a><a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">00077</a> <span class="keyword">static</span> <a class="code" href="structMagnifierOptions.html">MagnifierOptions</a> <a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a> = { NULL,      <span class="comment">/* target_display */</span>
<a name="l00078"></a>00078                                            NULL,      <span class="comment">/* source_display */</span>
<a name="l00079"></a>00079                                            <span class="stringliteral">"default"</span>, <span class="comment">/* cursor_set */</span>
<a name="l00080"></a>00080                                            <span class="stringliteral">"none"</span>,    <span class="comment">/* smoothing_type */</span>
<a name="l00081"></a>00081                                            2.0,       <span class="comment">/* zoom_factor */</span>
<a name="l00082"></a>00082                                            0.0,       <span class="comment">/* zoom_factor_x */</span>
<a name="l00083"></a>00083                                            0.0,       <span class="comment">/* zoom_factor_y */</span>
<a name="l00084"></a>00084                                            500,       <span class="comment">/* refresh_time */</span>
<a name="l00085"></a>00085                                            50,        <span class="comment">/* mouse_poll_time */</span>
<a name="l00086"></a>00086                                            0,         <span class="comment">/* cursor_size */</span>
<a name="l00087"></a>00087                                            0.0F,      <span class="comment">/* cursor_scale_factor */</span>
<a name="l00088"></a>00088                                            0xFF000000,<span class="comment">/* cursor_color */</span>
<a name="l00089"></a>00089                                            0,         <span class="comment">/* vertical_split */</span>
<a name="l00090"></a>00090                                            0,         <span class="comment">/* horizontal_split */</span>
<a name="l00091"></a>00091                                            0,         <span class="comment">/* fullscreen */</span>
<a name="l00092"></a>00092                                            0,         <span class="comment">/* mouse_follow */</span>
<a name="l00093"></a>00093                                            0,         <span class="comment">/* invert_image */</span>
<a name="l00094"></a>00094                                            0,         <span class="comment">/* no_initial_region */</span>
<a name="l00095"></a>00095                                            0,         <span class="comment">/* timing_iterations */</span>
<a name="l00096"></a>00096                                            0,         <span class="comment">/* timing_output */</span>
<a name="l00097"></a>00097                                            10,        <span class="comment">/* timing_delta_x */</span>
<a name="l00098"></a>00098                                            10,        <span class="comment">/* timing_delat_y */</span>
<a name="l00099"></a>00099                                            0,         <span class="comment">/* timing_pan_rate */</span>
<a name="l00100"></a>00100                                            1,         <span class="comment">/* smooth_scroll */</span>
<a name="l00101"></a>00101                                            0,         <span class="comment">/* border_width */</span>
<a name="l00102"></a>00102                                            0,         <span class="comment">/* border_color */</span>
<a name="l00103"></a>00103                                            0,         <span class="comment">/* test_pattern */</span>
<a name="l00104"></a>00104                                            0,         <span class="comment">/* is_override_redirect*/</span>
<a name="l00105"></a>00105                                            0          <span class="comment">/* ignore_damage */</span>
<a name="l00106"></a>00106 <span class="preprocessor">#ifdef HAVE_COMPOSITE</span>
<a name="l00107"></a>00107 <span class="preprocessor"></span>                                           ,0         <span class="comment">/* ignore_composite */</span>
<a name="l00108"></a>00108 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_COMPOSITE */</span>
<a name="l00109"></a>00109                                            ,0         <span class="comment">/* print_version */</span>
<a name="l00110"></a>00110                                          };
<a name="l00111"></a>00111 
<a name="l00112"></a><a class="code" href="magnifier-main_8c.html#8f5bf3f77e471251d8b1a1f90973192a">00112</a> <span class="keyword">static</span> GOptionEntry <a class="code" href="magnifier-main_8c.html#8f5bf3f77e471251d8b1a1f90973192a">magnifier_options</a> [] = {
<a name="l00113"></a>00113         {<span class="stringliteral">"target-display"</span>, <span class="charliteral">'t'</span>, 0, G_OPTION_ARG_STRING, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#d74cb3bca74c652043664686d14d0c26">target_display</a>, <span class="stringliteral">"specify display on which to show magnified view"</span>, NULL},
<a name="l00114"></a>00114         {<span class="stringliteral">"source-display"</span>, <span class="charliteral">'s'</span>, 0, G_OPTION_ARG_STRING, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#5de774dde41d3b145e0dc55272905452">source_display</a>, <span class="stringliteral">"specify display to magnify"</span>, NULL},
<a name="l00115"></a>00115         {<span class="stringliteral">"cursor-set"</span>, 0, 0, G_OPTION_ARG_STRING, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#1b71dc5ab5d975b1e810e2b14c387b75">cursor_set</a>, <span class="stringliteral">"cursor set to use in target display"</span>, NULL},
<a name="l00116"></a>00116         {<span class="stringliteral">"cursor-size"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#5ca304dad6c097321db4add74949bd3b">cursor_size</a>, <span class="stringliteral">"cursor size to use (overrides cursor-scale-factor)"</span>, NULL},
<a name="l00117"></a>00117         {<span class="stringliteral">"cursor-scale-factor"</span>, 0, 0, G_OPTION_ARG_DOUBLE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#3822cea47cb903bbd1159ae7cf3aa82f">cursor_scale_factor</a>, <span class="stringliteral">"cursor scale factor"</span>, NULL},
<a name="l00118"></a>00118         {<span class="stringliteral">"cursor-color"</span>, 0, 0, G_OPTION_ARG_INT64, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#67e65adc6de23880de48101b2928ec8b">cursor_color</a>, <span class="stringliteral">"cursor color (applied to \'black\' pixels)"</span>, NULL},
<a name="l00119"></a>00119         {<span class="stringliteral">"vertical"</span>, <span class="charliteral">'v'</span>, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#bec45e3d491ec178768c023b55bd0711">vertical_split</a>, <span class="stringliteral">"split screen vertically (if target display = source display)"</span>, NULL},
<a name="l00120"></a>00120         {<span class="stringliteral">"horizontal"</span>, <span class="charliteral">'h'</span>, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#0869c5d254017a23c3e77e0026c144ba">horizontal_split</a>, <span class="stringliteral">"split screen horizontally (if target display = source display)"</span>, NULL},
<a name="l00121"></a>00121         {<span class="stringliteral">"mouse-follow"</span>, <span class="charliteral">'m'</span>, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#4adede66ab7d856234a35b97220e2988">mouse_follow</a>, <span class="stringliteral">"track mouse movements"</span>, NULL},
<a name="l00122"></a>00122         {<span class="stringliteral">"refresh-time"</span>, <span class="charliteral">'r'</span>, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#bed01e6ac15e6a2b1247eb75e8ae19b5">refresh_time</a>, <span class="stringliteral">"minimum refresh time for idle, in ms"</span>, NULL},
<a name="l00123"></a>00123         {<span class="stringliteral">"mouse-latency"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#eba61a12a35c59dab9670cc15f4b29fc">mouse_poll_time</a>, <span class="stringliteral">"maximum mouse latency time, in ms"</span>, NULL},
<a name="l00124"></a>00124         {<span class="stringliteral">"zoom-factor"</span>, <span class="charliteral">'z'</span>, 0, G_OPTION_ARG_DOUBLE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#002ef34f3ec4073b1a3cdfb9c8378105">zoom_factor</a>, <span class="stringliteral">"zoom (scale) factor used to magnify source display"</span>, NULL}, 
<a name="l00125"></a>00125         {<span class="stringliteral">"invert-image"</span>, <span class="charliteral">'i'</span>, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#a8eaa184a784f144dd4e2122d0a8d455">invert_image</a>, <span class="stringliteral">"invert the image colormap"</span>, NULL}, 
<a name="l00126"></a>00126         {<span class="stringliteral">"no-initial-region"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#9c593a5b4dee65ab9d4376182b65439e">no_initial_region</a>, <span class="stringliteral">"don't create an initial zoom region"</span>, NULL},
<a name="l00127"></a>00127         {<span class="stringliteral">"timing-iterations"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#a8079ebec7dc413e42b4cc31e5023a4b">timing_iterations</a>, <span class="stringliteral">"iterations to run timing benchmark test (0=continuous)"</span>, NULL},
<a name="l00128"></a>00128         {<span class="stringliteral">"timing-output"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#ee92318ece48750d3df522ddcb2ac84b">timing_output</a>, <span class="stringliteral">"display performance ouput"</span>, NULL},
<a name="l00129"></a>00129         {<span class="stringliteral">"timing-pan-rate"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#ff3ecd32f9e0fcd40f9c35b93fa52bf7">timing_pan_rate</a>, <span class="stringliteral">"timing pan rate in lines per frame"</span>, NULL},
<a name="l00130"></a>00130         {<span class="stringliteral">"timing-delta-x"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#c719917bdc9caff26d923f34a88b0887">timing_delta_x</a>, <span class="stringliteral">"pixels to pan in x-dimension each frame in timing update test"</span>, NULL},
<a name="l00131"></a>00131         {<span class="stringliteral">"timing-delta-y"</span>, 0, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#2a0ccfc882c403b2bae0d2cea8ae9c76">timing_delta_y</a>, <span class="stringliteral">"pixels to pan in y-dimension each frame in timing update test"</span>, NULL},
<a name="l00132"></a>00132         {<span class="stringliteral">"smoothing-type"</span>, 0, 0, G_OPTION_ARG_STRING, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#afb8f82abff1c4602362f58d0c69ccc1">smoothing_type</a>, <span class="stringliteral">"image smoothing algorithm to apply (bilinear-interpolation | none)"</span>, NULL},
<a name="l00133"></a>00133         {<span class="stringliteral">"fullscreen"</span>, <span class="charliteral">'f'</span>, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#71a46f26b585b0d4e2d839af082723ad">fullscreen</a>, <span class="stringliteral">"fullscreen magnification, covers entire target display [REQUIRES --source-display and --target-display]"</span>, NULL},
<a name="l00134"></a>00134         {<span class="stringliteral">"smooth-scrolling"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#15c44a218cfc46c8b89ead8e8e65133c">smooth_scroll</a>, <span class="stringliteral">"use smooth scrolling"</span>, NULL},
<a name="l00135"></a>00135         {<span class="stringliteral">"border-size"</span>, <span class="charliteral">'b'</span>, 0, G_OPTION_ARG_INT, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#89a9303abb5eda8aad0059addb0a0253">border_width</a>, <span class="stringliteral">"width of border"</span>, NULL},
<a name="l00136"></a>00136         {<span class="stringliteral">"border-color"</span>, <span class="charliteral">'c'</span>, 0, G_OPTION_ARG_INT64, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#0de7b7ade09674210b59947724e80dc8">border_color</a>, <span class="stringliteral">"border color specified as (A)RGB 23-bit value, Alpha-MSB"</span>, NULL},
<a name="l00137"></a>00137         {<span class="stringliteral">"use-test-pattern"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#2f198f4a385c9b76d58c2e71f7031872">test_pattern</a>, <span class="stringliteral">"use test pattern as source"</span>, NULL},
<a name="l00138"></a>00138         {<span class="stringliteral">"override-redirect"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#a35a5c07a25b5607d41ffd7f134cafba">is_override_redirect</a>, <span class="stringliteral">"make the magnifier window totally unmanaged by the window manager"</span>, NULL},
<a name="l00139"></a>00139         {<span class="stringliteral">"ignore-damage"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#2545762b773dc73a9f3b7079c0203c02">ignore_damage</a>, <span class="stringliteral">"ignore the X server DAMAGE extension, if present"</span>, NULL},
<a name="l00140"></a>00140 <span class="preprocessor">#ifdef HAVE_COMPOSITE</span>
<a name="l00141"></a>00141 <span class="preprocessor"></span>        {<span class="stringliteral">"ignore-composite"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.ignore_composite, <span class="stringliteral">"ignore the X server COMPOSITE extension, if present"</span>, NULL},
<a name="l00142"></a>00142 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_COMPOSITE */</span>
<a name="l00143"></a>00143         {<span class="stringliteral">"version"</span>, 0, 0, G_OPTION_ARG_NONE, &amp;<a class="code" href="magnifier-main_8c.html#b4d2b03157ec9554d008ee134e28172c">global_options</a>.<a class="code" href="structMagnifierOptions.html#e5914d18ce62aebb0f23837bef3d6e00">print_version</a>, <span class="stringliteral">"print version"</span>, NULL},
<a name="l00144"></a>00144         {NULL}
<a name="l00145"></a>00145 };
<a name="l00146"></a>00146 
<a name="l00147"></a>00147 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00148"></a><a class="code" href="magnifier-main_8c.html#8c57e99c1b923081466e1850136f37d5">00148</a> <a class="code" href="magnifier-main_8c.html#8c57e99c1b923081466e1850136f37d5">init_rect_bounds</a> (<a class="code" href="structGNOME__Magnifier__RectBounds__type.html">GNOME_Magnifier_RectBounds</a> *bounds,
<a name="l00149"></a>00149                   <span class="keywordtype">long</span> x1, <span class="keywordtype">long</span> y1, <span class="keywordtype">long</span> x2, <span class="keywordtype">long</span> y2)
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151         bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#da72b580c4e14d8f1dcd85b2da3a8759">x1</a> = x1;
<a name="l00152"></a>00152         bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#24de0d98768b0b42dc53ab51950760c0">y1</a> = y1;
<a name="l00153"></a>00153         bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#721fd6fb9a4c3c6c3813402b31de633a">x2</a> = x2;
<a name="l00154"></a>00154         bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#3ba20b4c1f0db87a1b9f21169e20b5f3">y2</a> = y2;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 
<a name="l00157"></a><a class="code" href="magnifier-main_8c.html#a4d434a8b93410ea0ed660e48dac41c6">00157</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="magnifier-main_8c.html#a4d434a8b93410ea0ed660e48dac41c6">screen_width</a>, <a class="code" href="magnifier-main_8c.html#3b4a1bd850991355b91c7bfc15247d49">screen_height</a>;
<a name="l00158"></a>00158 
<a name="l00159"></a>00159 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00160"></a><a class="code" href="magnifier-main_8c.html#ba34052fdb47a58f7f24cb77504db3f3">00160</a> <a class="code" href="magnifier-main_8c.html#ba34052fdb47a58f7f24cb77504db3f3">magnifier_main_test_image</a> (gpointer data)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162         <span class="keyword">static</span> <span class="keywordtype">long</span> timing_counter = 0;
<a name="l00163"></a>00163         <span class="keyword">static</span> <span class="keywordtype">int</span> timing_x_pos = 0;
<a name="l00164"></a>00164         <span class="keyword">static</span> <span class="keywordtype">int</span> timing_y_pos = 0;
<a name="l00165"></a>00165         <span class="keyword">static</span> <span class="keywordtype">int</span> x_direction = 1;
<a name="l00166"></a>00166         <span class="keyword">static</span> <span class="keywordtype">int</span> y_direction = 1;
<a name="l00167"></a>00167         <a class="code" href="structMagnifier.html">Magnifier</a> *magnifier = (<a class="code" href="structMagnifier.html">Magnifier</a> *) data;
<a name="l00168"></a>00168         <a class="code" href="structCORBA__sequence__CORBA__Object.html">GNOME_Magnifier_ZoomRegionList</a> *zoom_regions;