\chapter{Swallow example}
\hypertarget{tutorial_edje_swallow}{}\label{tutorial_edje_swallow}\index{Swallow example@{Swallow example}}


This is a simple example in which we create a rect and swallow it.

Focusing on the relevant parts of the code we go right to the creation of our rectangle. It should be noted that we don\textquotesingle{}t resize or show our rect, that is because when an object is swallowed it\textquotesingle{}s geometry and visibility is controlled by the theme\+: 
\begin{DoxyCodeInclude}{0}
\DoxyCodeLine{\ \ \ rect\ =\ \mbox{\hyperlink{group__Evas__Object__Rectangle_ga1b7a9d8e6ce240590c1734da5f3449d2}{evas\_object\_rectangle\_add}}(evas);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group__Basic_gab751e9d24c16e74af6f7c08ea5b930c2}{evas\_object\_color\_set}}(rect,\ 255,\ 0,\ 0,\ 255);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Edje__Object__Part_ga97d1419f89bff20ba971e47c78641271}{edje\_object\_part\_swallow}}(edje\_obj,\ \textcolor{stringliteral}{"{}part\_one"{}},\ rect);}

\end{DoxyCodeInclude}
 The other bit of code that is relevant to us now is our check that the swallow worked\+: 
\begin{DoxyCodeInclude}{0}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ obj\ =\ \mbox{\hyperlink{group__Edje__Object__Part_gabbb9c38b34a9d4ca193eac7bf552cf59}{edje\_object\_part\_swallow\_get}}(edje\_obj,\ \textcolor{stringliteral}{"{}part\_one"{}});}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{if}(obj\ ==\ rect)}
\DoxyCodeLine{\ \ \ \ \ \ printf(\textcolor{stringliteral}{"{}Swallowing\ worked!\(\backslash\)n"{}});}

\end{DoxyCodeInclude}
 The full source code follows\+: 
\begin{DoxyCodeInclude}{0}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{preprocessor}{\#ifdef\ HAVE\_CONFIG\_H}}
\DoxyCodeLine{\textcolor{preprocessor}{\#\ include\ "{}config.h"{}}}
\DoxyCodeLine{\textcolor{preprocessor}{\#else}}
\DoxyCodeLine{\textcolor{preprocessor}{\#\ define\ EINA\_UNUSED}}
\DoxyCodeLine{\textcolor{preprocessor}{\#endif}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{preprocessor}{\#ifndef\ PACKAGE\_DATA\_DIR}}
\DoxyCodeLine{\textcolor{preprocessor}{\#define\ PACKAGE\_DATA\_DIR\ "{}."{}}}
\DoxyCodeLine{\textcolor{preprocessor}{\#endif}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{preprocessor}{\#include\ <Ecore.h>}}
\DoxyCodeLine{\textcolor{preprocessor}{\#include\ <\mbox{\hyperlink{Ecore__Evas_8h}{Ecore\_Evas.h}}>}}
\DoxyCodeLine{\textcolor{preprocessor}{\#include\ <\mbox{\hyperlink{Edje_8h}{Edje.h}}>}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{preprocessor}{\#define\ WIDTH\ \ (300)}}
\DoxyCodeLine{\textcolor{preprocessor}{\#define\ HEIGHT\ (300)}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{keyword}{static}\ \textcolor{keywordtype}{void}}
\DoxyCodeLine{\_on\_delete(Ecore\_Evas\ *ee\ \mbox{\hyperlink{group__Eina__Types__Group_ga82d751be730f849719ca292f9558be87}{EINA\_UNUSED}})}
\DoxyCodeLine{\{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Main__Loop__Group_ga95cf8e97dff0716433c2c5474d606a98}{ecore\_main\_loop\_quit}}();}
\DoxyCodeLine{\}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{comment}{/*\ here\ just\ to\ keep\ our\ example's\ window\ size\ and\ background\ image's}}
\DoxyCodeLine{\textcolor{comment}{\ *\ size\ in\ synchrony\ */}}
\DoxyCodeLine{\textcolor{keyword}{static}\ \textcolor{keywordtype}{void}}
\DoxyCodeLine{\_on\_canvas\_resize(Ecore\_Evas\ *ee)}
\DoxyCodeLine{\{}
\DoxyCodeLine{\ \ \ Evas\_Object\ *bg;}
\DoxyCodeLine{\ \ \ \textcolor{keywordtype}{int}\ \ \ \ \ \ \ \ \ \ w;}
\DoxyCodeLine{\ \ \ \textcolor{keywordtype}{int}\ \ \ \ \ \ \ \ \ \ h;}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ bg\ =\ \mbox{\hyperlink{group__Ecore__Evas__Group_ga85531b3a6bcbe868d2cf5d32fab99c60}{ecore\_evas\_data\_get}}(ee,\ \textcolor{stringliteral}{"{}background"{}});}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_ga931aadf4603731e73e8a84e4b14f1493}{ecore\_evas\_geometry\_get}}(ee,\ NULL,\ NULL,\ \&w,\ \&h);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group_gacad94595f83580c18908cb3b69b08d1a}{evas\_object\_resize}}(bg,\ w,\ h);}
\DoxyCodeLine{\}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{keywordtype}{int}}
\DoxyCodeLine{main(\textcolor{keywordtype}{int}\ argc\ \mbox{\hyperlink{group__Eina__Types__Group_ga82d751be730f849719ca292f9558be87}{EINA\_UNUSED}},\ \textcolor{keywordtype}{char}\ *argv[]\ \mbox{\hyperlink{group__Eina__Types__Group_ga82d751be730f849719ca292f9558be87}{EINA\_UNUSED}})}
\DoxyCodeLine{\{}
\DoxyCodeLine{\ \ \ \textcolor{keyword}{const}\ \textcolor{keywordtype}{char}\ \ *edje\_file\ =\ PACKAGE\_DATA\_DIR\textcolor{stringliteral}{"{}/swallow.edj"{}};}
\DoxyCodeLine{\ \ \ Ecore\_Evas\ \ *ee;}
\DoxyCodeLine{\ \ \ Evas\ \ \ \ \ \ \ \ *evas;}
\DoxyCodeLine{\ \ \ Evas\_Object\ *bg;}
\DoxyCodeLine{\ \ \ Evas\_Object\ *rect;}
\DoxyCodeLine{\ \ \ Evas\_Object\ *obj;}
\DoxyCodeLine{\ \ \ Evas\_Object\ *edje\_obj;}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{if}\ (!\mbox{\hyperlink{group__Ecore__Evas__Group_ga32ddbb6457033ad435a177eb0c4fe235}{ecore\_evas\_init}}())}
\DoxyCodeLine{\ \ \ \ \ \textcolor{keywordflow}{return}\ EXIT\_FAILURE;}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{if}\ (!\mbox{\hyperlink{group__Edje__General__Group_ga1c9c6594f38023c29fbfb2d0c8c675db}{edje\_init}}())}
\DoxyCodeLine{\ \ \ \ \ \textcolor{keywordflow}{goto}\ shutdown\_ecore\_evas;}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \textcolor{comment}{/*\ this\ will\ give\ you\ a\ window\ with\ an\ Evas\ canvas\ under\ the\ first}}
\DoxyCodeLine{\textcolor{comment}{\ \ \ \ *\ engine\ available\ */}}
\DoxyCodeLine{\ \ \ ee\ =\ \mbox{\hyperlink{group__Ecore__Evas__Group_gaaa770b6f2f1395f9eeb0e50e26c3f933}{ecore\_evas\_new}}(NULL,\ 0,\ 0,\ WIDTH,\ HEIGHT,\ NULL);}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{if}\ (!ee)\ \textcolor{keywordflow}{goto}\ shutdown\_edje;}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_ga3d478e975e2101b9b821ef24baf3dd9e}{ecore\_evas\_callback\_delete\_request\_set}}(ee,\ \_on\_delete);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_gaac67f679c9027059a34519fbdea360df}{ecore\_evas\_callback\_resize\_set}}(ee,\ \_on\_canvas\_resize);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_ga3b2832e0373bbafae2bb7143618535c1}{ecore\_evas\_title\_set}}(ee,\ \textcolor{stringliteral}{"{}Edje\ Swallow\ Example"{}});}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ evas\ =\ \mbox{\hyperlink{group__Ecore__Evas__Group_ga6f8d214cd55bc940d7cc62fecd8dbc06}{ecore\_evas\_get}}(ee);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ bg\ =\ \mbox{\hyperlink{group__Evas__Object__Rectangle_ga1b7a9d8e6ce240590c1734da5f3449d2}{evas\_object\_rectangle\_add}}(evas);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group__Basic_gab751e9d24c16e74af6f7c08ea5b930c2}{evas\_object\_color\_set}}(bg,\ 255,\ 255,\ 255,\ 255);\ \textcolor{comment}{/*\ white\ bg\ */}}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group_ga335c8ee6eaeaac9710656af4f8b0db91}{evas\_object\_move}}(bg,\ 0,\ 0);\ \textcolor{comment}{/*\ at\ canvas'\ origin\ */}}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group_gacad94595f83580c18908cb3b69b08d1a}{evas\_object\_resize}}(bg,\ WIDTH,\ HEIGHT);\ \textcolor{comment}{/*\ covers\ full\ canvas\ */}}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group__Basic_ga07208fcafd4739de606bc35fff684bf5}{evas\_object\_show}}(bg);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_gaa86c5abd200a02711aced53d27b9ddb2}{ecore\_evas\_data\_set}}(ee,\ \textcolor{stringliteral}{"{}background"{}},\ bg);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ edje\_obj\ =\ \mbox{\hyperlink{group__Edje__Object__Group_ga5548cef32568746f40df9bd0be339bea}{edje\_object\_add}}(evas);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Edje__Object__Group_gaec1edd24b5bd8e82823759a8dddc1996}{edje\_object\_file\_set}}(edje\_obj,\ edje\_file,\ \textcolor{stringliteral}{"{}example\_group"{}});}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group_ga335c8ee6eaeaac9710656af4f8b0db91}{evas\_object\_move}}(edje\_obj,\ 20,\ 20);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group_gacad94595f83580c18908cb3b69b08d1a}{evas\_object\_resize}}(edje\_obj,\ WIDTH\ -\/\ 40,\ HEIGHT\ -\/\ 40);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group__Basic_ga07208fcafd4739de606bc35fff684bf5}{evas\_object\_show}}(edje\_obj);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ rect\ =\ \mbox{\hyperlink{group__Evas__Object__Rectangle_ga1b7a9d8e6ce240590c1734da5f3449d2}{evas\_object\_rectangle\_add}}(evas);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Evas__Object__Group__Basic_gab751e9d24c16e74af6f7c08ea5b930c2}{evas\_object\_color\_set}}(rect,\ 255,\ 0,\ 0,\ 255);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Edje__Object__Part_ga97d1419f89bff20ba971e47c78641271}{edje\_object\_part\_swallow}}(edje\_obj,\ \textcolor{stringliteral}{"{}part\_one"{}},\ rect);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ obj\ =\ \mbox{\hyperlink{group__Edje__Object__Part_gabbb9c38b34a9d4ca193eac7bf552cf59}{edje\_object\_part\_swallow\_get}}(edje\_obj,\ \textcolor{stringliteral}{"{}part\_one"{}});}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{if}(obj\ ==\ rect)}
\DoxyCodeLine{\ \ \ \ \ \ printf(\textcolor{stringliteral}{"{}Swallowing\ worked!\(\backslash\)n"{}});}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_ga4953047ff97d4f1b0d75a7d513d4f317}{ecore\_evas\_show}}(ee);}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Main__Loop__Group_gaf103b9f668bb3e4fed12e52c6180132d}{ecore\_main\_loop\_begin}}();}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_gad3ec61f2aa03df4d3dbfd0d311e0c8dc}{ecore\_evas\_free}}(ee);}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_gab8fa311077f749190c9b622f672b2214}{ecore\_evas\_shutdown}}();}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Edje__General__Group_ga01041f6702f2d81bf10c3e41899805cb}{edje\_shutdown}}();}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{return}\ EXIT\_SUCCESS;}
\DoxyCodeLine{}
\DoxyCodeLine{\ shutdown\_edje:}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Edje__General__Group_ga01041f6702f2d81bf10c3e41899805cb}{edje\_shutdown}}();}
\DoxyCodeLine{\ shutdown\_ecore\_evas:}
\DoxyCodeLine{\ \ \ \mbox{\hyperlink{group__Ecore__Evas__Group_gab8fa311077f749190c9b622f672b2214}{ecore\_evas\_shutdown}}();}
\DoxyCodeLine{}
\DoxyCodeLine{\ \ \ \textcolor{keywordflow}{return}\ EXIT\_FAILURE;}
\DoxyCodeLine{\}}

\end{DoxyCodeInclude}


To compile use this command\+: \begin{DoxyVerb}* gcc -o edje-swallow edje-swallow.c -DPACKAGE_BIN_DIR=\"/Where/enlightenment/is/installed/bin\" -DPACKAGE_LIB_DIR=\"/Where/enlightenment/is/installed/lib\"
* -DPACKAGE_DATA_DIR=\"/Where/enlightenment/is/installed/share\"
* `pkg-config --cflags --libs evas ecore ecore-evas edje`
*
* edje_cc swallow.edc
* \end{DoxyVerb}
 