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<title>libyui-gtk: /builddir/build/BUILD/libyui-gtk-libyui-gtk-master-2.43.7/src/ygdkmngloader.c Source File</title>
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 <span id="projectnumber">2.43.7</span>
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<div class="title">ygdkmngloader.c</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/********************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * YaST2-GTK - http://en.opensuse.org/YaST2-GTK *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> ********************************************************************/</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">/* YGdkMngLoader image loader */</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// check the header file for information about this loader</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "ygdkmngloader.h"</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <assert.h></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <sys/mman.h></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <gdk-pixbuf/gdk-pixbuf.h></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">/* A few chunks ids */</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define MNG_UINT_MHDR 0x4d484452L</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_BACK 0x4241434bL</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_PLTE 0x504c5445L</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_tRNS 0x74524e53L</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_IHDR 0x49484452L</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_IDAT 0x49444154L</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_IEND 0x49454e44L</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_MEND 0x4d454e44L</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_FRAM 0x4652414dL</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_LOOP 0x4c4f4f50L</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_ENDL 0x454e444cL</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"></span><span class="preprocessor">#define MNG_UINT_TERM 0x5445524dL</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">//** Utilities to read the MNG file</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="structDataStream.html"> 33</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structDataStream.html">DataStream</a> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">const</span> guint8 *data;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">const</span> <span class="keywordtype">long</span> size;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">long</span> offset;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> } <a class="code" href="structDataStream.html">DataStream</a>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">static</span> <a class="code" href="structDataStream.html">DataStream</a> data_stream_constructor (<span class="keyword">const</span> guint8 *raw_data, <span class="keywordtype">long</span> size)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="structDataStream.html">DataStream</a> data = { raw_data, size, 0 };</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> data;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">static</span> gboolean read_signature (<a class="code" href="structDataStream.html">DataStream</a> *data)</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (data->offset+8 > data->size)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  data->offset += 8;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> memcmp (data->data + data->offset-8, <span class="stringliteral">"\212MNG\r\n\032\n"</span>, 8) == 0;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">static</span> gboolean read_uint8 (<a class="code" href="structDataStream.html">DataStream</a> *data, guint8 *value)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (data->offset+1 > data->size)</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  *value = data->data [data->offset++];</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">static</span> gboolean read_uint32 (<a class="code" href="structDataStream.html">DataStream</a> *data, guint32 *value)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (data->offset+4 > data->size)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  *value = data->data[data->offset+0] << 24;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  *value |= data->data[data->offset+1] << 16;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  *value |= data->data[data->offset+2] << 8;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  *value |= data->data[data->offset+3];</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  data->offset += 4;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">static</span> gboolean read_data (<a class="code" href="structDataStream.html">DataStream</a> *data, guint32 size, GdkPixbufLoader *loader,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  GError **error)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (data->offset+size > data->size)</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  g_set_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE,</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="stringliteral">"Unexpected end of file when reading PNG chunk"</span>);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  gboolean ret;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  ret = gdk_pixbuf_loader_write (loader, data->data + data->offset, size, error);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  data->offset += size;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">static</span> <span class="keywordtype">void</span> image_prepared_cb (GdkPixbufLoader *loader, <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_pixbuf)</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  GdkPixbuf *pix = gdk_pixbuf_loader_get_pixbuf (loader);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  mng_pixbuf->frames = g_list_append (mng_pixbuf->frames, pix);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">//** YGdkMngPixbuf</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> G_DEFINE_TYPE (<a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a>, ygdk_mng_pixbuf, GDK_TYPE_PIXBUF_ANIMATION)</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> static <span class="keywordtype">void</span> ygdk_mng_pixbuf_init (<a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *pixbuf)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> gboolean ygdk_mng_pixbuf_is_file_mng (<span class="keyword">const</span> gchar *filename)</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  FILE *file = fopen (filename, <span class="stringliteral">"rb"</span>);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (!file)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">goto</span> is_file_mng_failed;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  guchar raw_data [8];</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span> (fread (raw_data, 1, 8, file) < 8)</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">goto</span> is_file_mng_failed;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  gboolean ret = ygdk_mng_pixbuf_is_data_mng (raw_data, 8);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  fclose (file);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> is_file_mng_failed:</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (file)</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  fclose (file);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> gboolean ygdk_mng_pixbuf_is_data_mng (<span class="keyword">const</span> guint8 *raw_data, <span class="keywordtype">long</span> size)</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="structDataStream.html">DataStream</a> data = data_stream_constructor (raw_data, size);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> read_signature (&data);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment">// (void) error is to overcome -Werror=unused-but-set-variable</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#define SET_ERROR(msg) { error = TRUE; (void) error; \</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor"> g_set_error (error_msg, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE, msg); }</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> GdkPixbufAnimation *ygdk_mng_pixbuf_new_from_file (<span class="keyword">const</span> gchar *filename,</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  GError **error_msg)</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  gboolean error = FALSE;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  FILE *file = fopen (filename, <span class="stringliteral">"rb"</span>);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (!file) {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  error = TRUE;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  SET_ERROR (<span class="stringliteral">"Could not open specified file"</span>)</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  return NULL;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  fseek (file, 0, SEEK_END);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">long</span> file_size = ftell (file);</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  fseek (file, 0, SEEK_SET);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  GdkPixbufAnimation *mng_pixbuf = 0;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  guchar *data = mmap (NULL, file_size, PROT_READ, MAP_PRIVATE,</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  fileno (file), 0);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  if (data == MAP_FAILED)</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  SET_ERROR ("Could not map file")</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  else {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  mng_pixbuf = ygdk_mng_pixbuf_new_from_data (data, file_size, error_msg);</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  munmap (data, file_size);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  fclose (file);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> mng_pixbuf;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> GdkPixbufAnimation *ygdk_mng_pixbuf_new_from_data (<span class="keyword">const</span> guint8 *raw_data, <span class="keywordtype">long</span> size,</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  GError **error_msg)</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="structDataStream.html">DataStream</a> data = data_stream_constructor (raw_data, size);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  gboolean error = FALSE;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">if</span> (!read_signature (&data)) {</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  SET_ERROR (<span class="stringliteral">"Not a MNG file"</span>)</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  return NULL;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  }</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_pixbuf = g_object_new (YGDK_TYPE_MNG_PIXBUF, NULL);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  mng_pixbuf->iteration_max = 0x7fffffff;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  guint32 chunk_size, chunk_id;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordtype">long</span> chunk_offset;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  GdkPixbufLoader *loader = NULL; <span class="comment">/* currently loading... */</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  gboolean first_read = TRUE;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  do {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  error = !read_uint32 (&data, &chunk_size);</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  error = error || !read_uint32 (&data, &chunk_id);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span> (error) {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  SET_ERROR (<span class="stringliteral">"Unexpected end of file on new chunk"</span>)</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  break;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  chunk_offset = data.offset + chunk_size + 4<span class="comment">/*CRC*/</span>;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  if (first_read && chunk_id != MNG_UINT_MHDR)</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  SET_ERROR (<span class="stringliteral">"MHDR chunk must come first"</span>)</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  break;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// not currently reading a PNG stream </span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  if (!loader)</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">switch</span> (chunk_id)</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">case</span> MNG_UINT_MHDR:</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">if</span> (!first_read)</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  SET_ERROR (<span class="stringliteral">"Only one MHDR chunk allowed"</span>)</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  break;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  if (chunk_size == 7*4)</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// Read MHDR chunk data</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  error = !read_uint32 (&data, &mng_pixbuf->frame_width);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  error = error || !read_uint32 (&data, &mng_pixbuf->frame_height);</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  error = error || !read_uint32 (&data, &mng_pixbuf->ticks_per_second);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  SET_ERROR (<span class="stringliteral">"Unexpected end of file on MHDR chunk"</span>)</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment">/* Next atttributes: Nominal_layer_count, Nominal_frame_count,</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> Nominal_play_time, Simplicity_profile */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  else if (mng_pixbuf->frame_width <= 0 ||</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  mng_pixbuf->frame_height <= 0 ||</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  mng_pixbuf->ticks_per_second < 0)</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  SET_ERROR ("Invalid MHDR parameter")</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment">//fprintf(stderr, "ticks per second: %d\n", mng_pixbuf->ticks_per_second);</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  else</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  SET_ERROR ("MHDR chunk must be 28 bytes <span class="keywordtype">long</span>")</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  break;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  case MNG_UINT_IHDR:</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  loader = gdk_pixbuf_loader_new_with_type ("png", NULL);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  g_signal_connect (G_OBJECT (loader), "area-prepared",</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  G_CALLBACK (image_prepared_cb), mng_pixbuf);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  gdk_pixbuf_loader_set_size (loader, mng_pixbuf->frame_width,</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  mng_pixbuf->frame_height);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  {</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">const</span> guchar sig[8] = { 137, 80, 78, 71, 13, 10, 26, 10 };</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">if</span>(!gdk_pixbuf_loader_write (loader, sig, 8, error_msg))</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  error = TRUE;</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  }</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">case</span> MNG_UINT_TERM:</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span> (chunk_size > 1)</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  {</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// Read TERM chunk data</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  guint8 t = 0;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  error = !read_uint8 (&data, &t); <span class="comment">// term action</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (t == 3 && chunk_size == 2+8)</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  {</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  error = error || !read_uint8 (&data, &t); <span class="comment">// after term action</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  error = error || !read_uint32 (&data, &mng_pixbuf->last_frame_delay);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  error = error || !read_uint32 (&data, &mng_pixbuf->iteration_max);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  SET_ERROR (<span class="stringliteral">"Unexpected end of file on TERM chunk"</span>)</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  SET_ERROR (<span class="stringliteral">"TERM chunk must be 10 bytes when term action is 3"</span>)</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  SET_ERROR (<span class="stringliteral">"TERM chunk must have at least 1 byte"</span>)</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  break;</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  case MNG_UINT_BACK:</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">// TODO:</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  break;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  case MNG_UINT_IDAT:</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  case MNG_UINT_IEND:</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  if (loader != NULL)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  SET_ERROR ("Corrupted PNG chunk closures")</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  break;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  case MNG_UINT_MEND:</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  default:</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  break;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  }</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  }</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  if (error)</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  break;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// loading a PNG stream</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  if (loader)</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  {</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  data.offset -= 8;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">if</span> (!read_data (&data, chunk_size+8+4, loader, error_msg))</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  error = TRUE;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (chunk_id == MNG_UINT_IEND)</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">if</span> (!gdk_pixbuf_loader_close (loader, error_msg))</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  {</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  error = TRUE;</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  }</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  loader = NULL;</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  }</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  data.offset = chunk_offset;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  first_read = FALSE;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  } <span class="keywordflow">while</span> (chunk_id != MNG_UINT_MEND && !error);</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  {</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  g_object_unref (G_OBJECT (mng_pixbuf));</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">return</span> GDK_PIXBUF_ANIMATION (mng_pixbuf);</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> }</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="preprocessor">#undef SET_ERROR</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="keyword">static</span> gboolean ygdk_mng_pixbuf_is_static_image (GdkPixbufAnimation *anim)</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_anim = YGDK_MNG_PIXBUF (anim);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> g_list_length (mng_anim->frames) == 1;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="keyword">static</span> GdkPixbuf *ygdk_mng_pixbuf_get_static_image (GdkPixbufAnimation *anim)</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> {</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_anim = YGDK_MNG_PIXBUF (anim);</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">return</span> g_list_nth_data (mng_anim->frames, 0);</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> }</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="keyword">static</span> <span class="keywordtype">void</span> ygdk_mng_pixbuf_get_size (GdkPixbufAnimation *anim, <span class="keywordtype">int</span> *width, <span class="keywordtype">int</span> *height)</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> {</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_anim = YGDK_MNG_PIXBUF (anim);</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span> (width) *width = mng_anim->frame_width;</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">if</span> (height) *height = mng_anim->frame_height;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="keyword">static</span> GdkPixbufAnimationIter *ygdk_mng_pixbuf_get_iter (GdkPixbufAnimation *anim,</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keyword">const</span> GTimeVal *start_time)</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> {</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a> *iter = g_object_new (YGDK_TYPE_MNG_PIXBUF_ITER, NULL);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  iter->mng_pixbuf = YGDK_MNG_PIXBUF( anim );</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  iter->cur_frame = 0;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">return</span> GDK_PIXBUF_ANIMATION_ITER( iter );</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> }</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="keyword">static</span> <span class="keywordtype">void</span> ygdk_mng_pixbuf_class_init (<a class="code" href="structYGdkMngPixbufClass.html">YGdkMngPixbufClass</a> *klass)</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> {</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  ygdk_mng_pixbuf_parent_class = g_type_class_peek_parent (klass);</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> </div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  GdkPixbufAnimationClass *pixbuf_class = GDK_PIXBUF_ANIMATION_CLASS (klass);</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  pixbuf_class->is_static_image = ygdk_mng_pixbuf_is_static_image;</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  pixbuf_class->get_static_image = ygdk_mng_pixbuf_get_static_image;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  pixbuf_class->get_size = ygdk_mng_pixbuf_get_size;</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  pixbuf_class->get_iter = ygdk_mng_pixbuf_get_iter;</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> }</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> </div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="comment">//** YGdkMngPixbufIter</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> G_DEFINE_TYPE (<a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a>, ygdk_mng_pixbuf_iter, GDK_TYPE_PIXBUF_ANIMATION_ITER)</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> static <span class="keywordtype">void</span> ygdk_mng_pixbuf_iter_init (<a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a> *iter)</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> }</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="keyword">static</span> GdkPixbuf *ygdk_mng_pixbuf_iter_get_pixbuf (GdkPixbufAnimationIter *iter)</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> {</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a> *mng_iter = YGDK_MNG_PIXBUF_ITER (iter);</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">return</span> g_list_nth_data (mng_iter->mng_pixbuf->frames, mng_iter->cur_frame); </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> }</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> <span class="keyword">static</span> gboolean ygdk_mng_pixbuf_iter_on_currently_loading_frame (GdkPixbufAnimationIter *iter)</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> {</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> }</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ygdk_mng_pixbuf_iter_get_delay_time (GdkPixbufAnimationIter *iter)</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a> *mng_iter = YGDK_MNG_PIXBUF_ITER (iter);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordtype">int</span> delay = 1000.0 / mng_iter->mng_pixbuf->ticks_per_second;</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">if</span> (mng_iter->cur_frame == g_list_length (mng_iter->mng_pixbuf->frames)-1)</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  delay += mng_iter->mng_pixbuf->last_frame_delay;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">return</span> delay;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> }</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="keyword">static</span> gboolean ygdk_mng_pixbuf_iter_advance (GdkPixbufAnimationIter *iter,</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keyword">const</span> GTimeVal *current_time)</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> {</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <a class="code" href="structYGdkMngPixbufIter.html">YGdkMngPixbufIter</a> *mng_iter = YGDK_MNG_PIXBUF_ITER (iter);</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="structYGdkMngPixbuf.html">YGdkMngPixbuf</a> *mng_pixbuf = mng_iter->mng_pixbuf;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (!mng_pixbuf->frames)</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  gboolean can_advance = TRUE;</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordtype">int</span> frames_len = g_list_length (mng_pixbuf->frames);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">if</span> (mng_iter->cur_frame+1 == frames_len)</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  {</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">if</span> (mng_pixbuf->iteration_max == 0x7fffffff || </div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  mng_iter->cur_iteration < mng_pixbuf->iteration_max)</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  mng_iter->cur_iteration++;</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  can_advance = FALSE;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  }</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> </div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">if</span> (can_advance)</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  mng_iter->cur_frame = (mng_iter->cur_frame+1) % frames_len;</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">return</span> can_advance;</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="keyword">static</span> <span class="keywordtype">void</span> ygdk_mng_pixbuf_iter_class_init (<a class="code" href="structYGdkMngPixbufIterClass.html">YGdkMngPixbufIterClass</a> *klass)</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  ygdk_mng_pixbuf_iter_parent_class = g_type_class_peek_parent (klass);</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  GdkPixbufAnimationIterClass *iter_class = GDK_PIXBUF_ANIMATION_ITER_CLASS (klass);</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  iter_class->get_delay_time = ygdk_mng_pixbuf_iter_get_delay_time;</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  iter_class->get_pixbuf = ygdk_mng_pixbuf_iter_get_pixbuf;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  iter_class->on_currently_loading_frame = ygdk_mng_pixbuf_iter_on_currently_loading_frame;</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  iter_class->advance = ygdk_mng_pixbuf_iter_advance;</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> }</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div>
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