\hypertarget{evas-object-manipulation_8c-example}{\section{evas-\/object-\/manipulation.\+c}
}

\begin{DoxyCodeInclude}

\textcolor{preprocessor}{#ifdef HAVE\_CONFIG\_H}
\textcolor{preprocessor}{#include "config.h"}
\textcolor{preprocessor}{#else}
\textcolor{preprocessor}{#define PACKAGE\_EXAMPLES\_DIR "."}
\textcolor{preprocessor}{#endif}

\textcolor{preprocessor}{#include <Ecore.h>}
\textcolor{preprocessor}{#include <\hyperlink{Ecore__Evas_8h}{Ecore\_Evas.h}>}
\textcolor{preprocessor}{#include <stdio.h>}
\textcolor{preprocessor}{#include <errno.h>}

\textcolor{preprocessor}{#define WIDTH  (320)}
\textcolor{preprocessor}{#define HEIGHT (240)}

\textcolor{keyword}{static} \textcolor{keyword}{const} \textcolor{keywordtype}{char} *img\_path = PACKAGE\_EXAMPLES\_DIR \textcolor{stringliteral}{"/enlightenment.png"};
\textcolor{keyword}{static} \textcolor{keyword}{const} \textcolor{keywordtype}{char} *border\_img\_path = PACKAGE\_EXAMPLES\_DIR \textcolor{stringliteral}{"/red.png"};

\textcolor{keyword}{struct }test\_data
\{
   Ecore\_Evas  *ee;
   \hyperlink{group__Evas__Canvas_ga5ff87cc4ce6bc43e3b640a6d37f73043}{Evas}        *canvas;
   \hyperlink{group__Evas__Object__Group_ga9e19e6dd1f517a0ba437c0114d3e7c97}{Evas\_Object} *img, *bg, *clipper, *clipper\_border, *text;
\};

\textcolor{keyword}{static} \textcolor{keyword}{struct }test\_data d = \{0\};

\textcolor{comment}{/* here just to keep our example's window size and background image's}
\textcolor{comment}{ * size in synchrony */}
\textcolor{keyword}{static} \textcolor{keywordtype}{void}
\_canvas\_resize\_cb(Ecore\_Evas *ee)
\{
   \textcolor{keywordtype}{int} w, h;

   \hyperlink{group__Ecore__Evas__Group_ga931aadf4603731e73e8a84e4b14f1493}{ecore\_evas\_geometry\_get}(ee, NULL, NULL, &w, &h);
   evas\_object\_resize(d.bg, w, h);
\}

\textcolor{keyword}{static} \textcolor{keywordtype}{void}
\_on\_keydown(\textcolor{keywordtype}{void}        *data EINA\_UNUSED,
            \hyperlink{group__Evas__Canvas_ga5ff87cc4ce6bc43e3b640a6d37f73043}{Evas}        *\hyperlink{namespaceevas}{evas} EINA\_UNUSED,
            \hyperlink{group__Evas__Object__Group_ga9e19e6dd1f517a0ba437c0114d3e7c97}{Evas\_Object} *o EINA\_UNUSED,
            \textcolor{keywordtype}{void}        *einfo)
\{
   \hyperlink{struct__Evas__Event__Key__Down}{Evas\_Event\_Key\_Down} *ev = einfo;

   \textcolor{keywordflow}{if} (strcmp(ev->\hyperlink{struct__Evas__Event__Key__Down_a70473bba88a1afaee180a54150513824}{key}, \textcolor{stringliteral}{"h"}) == 0) \textcolor{comment}{/* print help */}
     \{
        fprintf(stdout, \textcolor{stringliteral}{"commands are:\(\backslash\)n"}
                        \textcolor{stringliteral}{"\(\backslash\)to - change clipper's opacity\(\backslash\)n"}
                        \textcolor{stringliteral}{"\(\backslash\)tr - toggle clipper's color between red and white\(\backslash\)n"}
                        \textcolor{stringliteral}{"\(\backslash\)tc - toggle clipper's clipping function\(\backslash\)n"}
                        \textcolor{stringliteral}{"\(\backslash\)tv - toggle clipper's visibility\(\backslash\)n"});
        \textcolor{keywordflow}{return};
     \}

   \textcolor{keywordflow}{if} (strcmp(ev->\hyperlink{struct__Evas__Event__Key__Down_a70473bba88a1afaee180a54150513824}{key}, \textcolor{stringliteral}{"o"}) == 0) \textcolor{comment}{/* change clipper's opacity */}
     \{
        \textcolor{keywordtype}{int} alpha, r, g, b;

        \hyperlink{group__Evas__Object__Group__Basic_ga0854bae878bfc39f51b9c989353c973f}{evas\_object\_color\_get}(d.clipper, &r, &g, &b, &alpha);
        \hyperlink{group__Evas__Utils_ga862abed1097a429dd439fbe08813cd9d}{evas\_color\_argb\_unpremul}(alpha, &r, &g, &b);

        alpha -= 20;
        \textcolor{keywordflow}{if} (alpha < 0)
          alpha = 255;

        \hyperlink{group__Evas__Utils_gac02bf3973675ae7591b9f34deef1554f}{evas\_color\_argb\_premul}(alpha, &r, &g, &b);
        \hyperlink{group__Evas__Object__Group__Basic_gae34bdcfd7f5100151f6ea8ef4a392949}{evas\_object\_color\_set}(d.clipper, r, g, b, alpha);

        fprintf(stdout, \textcolor{stringliteral}{"Changing clipper's opacity: %d%%\(\backslash\)n"},
                (\textcolor{keywordtype}{int})((alpha / 255.0) * 100));
        \textcolor{keywordflow}{return};
     \}

   \textcolor{keywordflow}{if} (strcmp(ev->\hyperlink{struct__Evas__Event__Key__Down_a70473bba88a1afaee180a54150513824}{key}, \textcolor{stringliteral}{"r"}) == 0) \textcolor{comment}{/* toggle clipper's color}
\textcolor{comment}{                                       * between red and white */}
     \{
        \textcolor{keywordtype}{int} alpha, r, g, b;

        fprintf(stdout, \textcolor{stringliteral}{"Changing clipper's color to"});

        \hyperlink{group__Evas__Object__Group__Basic_ga0854bae878bfc39f51b9c989353c973f}{evas\_object\_color\_get}(d.clipper, &r, &g, &b, &alpha);
        \hyperlink{group__Evas__Utils_ga862abed1097a429dd439fbe08813cd9d}{evas\_color\_argb\_unpremul}(alpha, &r, &g, &b);

        \textcolor{keywordflow}{if} (g > 0)
          \{
             fprintf(stdout, \textcolor{stringliteral}{"red\(\backslash\)n"});
             g = b = 0;
          \}
        \textcolor{keywordflow}{else}
          \{
             fprintf(stdout, \textcolor{stringliteral}{"white\(\backslash\)n"});
             g = b = 255;
          \}

        \hyperlink{group__Evas__Utils_gac02bf3973675ae7591b9f34deef1554f}{evas\_color\_argb\_premul}(alpha, &r, &g, &b);
        \hyperlink{group__Evas__Object__Group__Basic_gae34bdcfd7f5100151f6ea8ef4a392949}{evas\_object\_color\_set}(d.clipper, r, g, b, alpha);
        \textcolor{keywordflow}{return};
     \}

   \textcolor{keywordflow}{if} (strcmp(ev->\hyperlink{struct__Evas__Event__Key__Down_a70473bba88a1afaee180a54150513824}{key}, \textcolor{stringliteral}{"c"}) == 0) \textcolor{comment}{/* toggle clipper's clipping function */}
     \{
        fprintf(stdout, \textcolor{stringliteral}{"Toggling clipping "});

        \textcolor{keywordflow}{if} (evas\_object\_clip\_get(d.img) == d.clipper)
          \{
             evas\_object\_clip\_unset(d.img);
             fprintf(stdout, \textcolor{stringliteral}{"off\(\backslash\)n"});
          \}
        \textcolor{keywordflow}{else}
          \{
             evas\_object\_clip\_set(d.img, d.clipper);
             fprintf(stdout, \textcolor{stringliteral}{"on\(\backslash\)n"});
          \}
        \textcolor{keywordflow}{return};
     \}

   \textcolor{keywordflow}{if} (strcmp(ev->\hyperlink{struct__Evas__Event__Key__Down_a70473bba88a1afaee180a54150513824}{key}, \textcolor{stringliteral}{"v"}) == 0) \textcolor{comment}{/* toggle clipper's visibility */}
     \{
        fprintf(stdout, \textcolor{stringliteral}{"Clipper is now "});

        \textcolor{keywordflow}{if} (evas\_object\_visible\_get(d.clipper))
          \{
             \hyperlink{group__Evas__Object__Group__Basic_gacc307a0d7bfc9df151fd9ec75808c587}{evas\_object\_hide}(d.clipper);
             fprintf(stdout, \textcolor{stringliteral}{"hidden\(\backslash\)n"});
          \}
        \textcolor{keywordflow}{else}
          \{
             \hyperlink{group__Evas__Object__Group__Basic_ga9cbc13661584e49fb9d9cdab514a1eeb}{evas\_object\_show}(d.clipper);
             fprintf(stdout, \textcolor{stringliteral}{"visible\(\backslash\)n"});
          \}
        \textcolor{keywordflow}{return};
     \}
\}

\textcolor{keywordtype}{int}
main(\textcolor{keywordtype}{void})
\{
   \textcolor{keywordtype}{int} err;

   \textcolor{keywordflow}{if} (!\hyperlink{group__Ecore__Evas__Group_ga32ddbb6457033ad435a177eb0c4fe235}{ecore\_evas\_init}())
     \textcolor{keywordflow}{return} EXIT\_FAILURE;

   \textcolor{comment}{/* this will give you a window with an Evas canvas under the first}
\textcolor{comment}{    * engine available */}
   d.ee = \hyperlink{group__Ecore__Evas__Group_gac7f2cdbcb79635c34317c1183dd04cb0}{ecore\_evas\_new}(NULL, 10, 10, WIDTH, HEIGHT, NULL);
   \textcolor{keywordflow}{if} (!d.ee)
     \textcolor{keywordflow}{goto} \hyperlink{namespaceefl_1_1eina_1_1log__level_a0eec9fe47d243634f680b56a7d768ec7}{error};

   \hyperlink{group__Ecore__Evas__Group_gaac67f679c9027059a34519fbdea360df}{ecore\_evas\_callback\_resize\_set}(d.ee, \_canvas\_resize\_cb);
   \hyperlink{group__Ecore__Evas__Group_ga4953047ff97d4f1b0d75a7d513d4f317}{ecore\_evas\_show}(d.ee);

   \textcolor{comment}{/* the canvas pointer, de facto */}
   d.canvas = \hyperlink{group__Ecore__Evas__Group_ga75a7cc694b6069e78df47dab0b0f2d20}{ecore\_evas\_get}(d.ee);

   d.bg = \hyperlink{group__Evas__Object__Rectangle_ga4d80fc32ad1cac28428cebd65d746751}{evas\_object\_rectangle\_add}(d.canvas);
   evas\_object\_name\_set(d.bg, \textcolor{stringliteral}{"background rectangle"});
   \hyperlink{group__Evas__Object__Group__Basic_gae34bdcfd7f5100151f6ea8ef4a392949}{evas\_object\_color\_set}(d.bg, 255, 255, 255, 255); \textcolor{comment}{/* white bg */}
   evas\_object\_move(d.bg, 0, 0); \textcolor{comment}{/* at canvas' origin */}
   evas\_object\_resize(d.bg, WIDTH, HEIGHT); \textcolor{comment}{/* covers full canvas */}
   \hyperlink{group__Evas__Object__Group__Basic_ga9cbc13661584e49fb9d9cdab514a1eeb}{evas\_object\_show}(d.bg);

   evas\_object\_focus\_set(d.bg, \hyperlink{group__Eina__Types__Group_ga05c12dacc8b4058994df842b41be85fc}{EINA\_TRUE});
   \hyperlink{group__Evas__Object__Group__Events_ga23be30ac5cdfb780f1ff82e9108ec26b}{evas\_object\_event\_callback\_add}(
     d.bg, \hyperlink{Evas__Common_8h_a99e208e463a20499aabe6faac8a8cb8aa336b86bad4f145f84c155e4922335584}{EVAS\_CALLBACK\_KEY\_DOWN}, \_on\_keydown, NULL);

   d.img = \hyperlink{group__Evas__Object__Image_ga0e8cb83d31d02bf583c75925b7cd14d7}{evas\_object\_image\_filled\_add}(d.canvas);
   \hyperlink{group__Evas__Object__Image_gac27fd0ceabe5f56607b7a86d71577df1}{evas\_object\_image\_file\_set}(d.img, img\_path, NULL);
   err = evas\_object\_image\_load\_error\_get(d.img);
   \textcolor{keywordflow}{if} (err != EVAS\_LOAD\_ERROR\_NONE)
     \{
        \textcolor{keywordflow}{goto} panic;
     \}
   \textcolor{keywordflow}{else}
     \{
        evas\_object\_move(d.img, 0, 0);
        evas\_object\_resize(d.img, WIDTH, HEIGHT);
        \hyperlink{group__Evas__Object__Group__Basic_ga9cbc13661584e49fb9d9cdab514a1eeb}{evas\_object\_show}(d.img);

        fprintf(stdout, \textcolor{stringliteral}{"Image object added, type is: %s\(\backslash\)n"},
                evas\_object\_type\_get(d.img));
     \}

   \textcolor{comment}{/* border on the image's clipper, here just to emphasize its position */}
   d.clipper\_border = \hyperlink{group__Evas__Object__Image_ga0e8cb83d31d02bf583c75925b7cd14d7}{evas\_object\_image\_filled\_add}(d.canvas);
   \hyperlink{group__Evas__Object__Image_gac27fd0ceabe5f56607b7a86d71577df1}{evas\_object\_image\_file\_set}(d.clipper\_border, border\_img\_path, NULL);
   err = evas\_object\_image\_load\_error\_get(d.clipper\_border);
   \textcolor{keywordflow}{if} (err != EVAS\_LOAD\_ERROR\_NONE)
     \{
        \textcolor{keywordflow}{goto} panic;
     \}
   \textcolor{keywordflow}{else}
     \{
        evas\_object\_image\_border\_set(d.clipper\_border, 3, 3, 3, 3);
        evas\_object\_image\_border\_center\_fill\_set(
          d.clipper\_border, \hyperlink{Evas__Common_8h_a4a05f0fd82f51c6b330e349457cdc7e2a2ad856ac6aab5e2659c3a584a37aec70}{EVAS\_BORDER\_FILL\_NONE});
        evas\_object\_move(d.clipper\_border, (WIDTH / 4) - 3, (HEIGHT / 4) - 3);
        evas\_object\_resize(
          d.clipper\_border, (WIDTH / 2) + 6, (HEIGHT / 2) + 6);
        \hyperlink{group__Evas__Object__Group__Basic_ga9cbc13661584e49fb9d9cdab514a1eeb}{evas\_object\_show}(d.clipper\_border);
     \}

   \textcolor{comment}{/* solid white clipper (note that it's the default color for a}
\textcolor{comment}{    * rectangle) - it won't change clippees' colors, then (multiplying}
\textcolor{comment}{    * by 255) */}
   d.clipper = \hyperlink{group__Evas__Object__Rectangle_ga4d80fc32ad1cac28428cebd65d746751}{evas\_object\_rectangle\_add}(d.canvas);
   evas\_object\_move(d.clipper, WIDTH / 4, HEIGHT / 4);
   evas\_object\_resize(d.clipper, WIDTH / 2, HEIGHT / 2);
   evas\_object\_clip\_set(d.img, d.clipper);
   \hyperlink{group__Evas__Object__Group__Basic_ga9cbc13661584e49fb9d9cdab514a1eeb}{evas\_object\_show}(d.clipper);

   \hyperlink{group__Ecore__Main__Loop__Group_gaf103b9f668bb3e4fed12e52c6180132d}{ecore\_main\_loop\_begin}();

   \hyperlink{group__Ecore__Evas__Group_gad3ec61f2aa03df4d3dbfd0d311e0c8dc}{ecore\_evas\_free}(d.ee);
   \hyperlink{group__Ecore__Evas__Group_gab8fa311077f749190c9b622f672b2214}{ecore\_evas\_shutdown}();
   \textcolor{keywordflow}{return} 0;

\hyperlink{namespaceefl_1_1eina_1_1log__level_a0eec9fe47d243634f680b56a7d768ec7}{error}:
   fprintf(stderr, \textcolor{stringliteral}{"you got to have at least one evas engine built and linked"}
                   \textcolor{stringliteral}{" up to ecore-evas for this example to run properly.\(\backslash\)n"});
panic:
   \hyperlink{group__Ecore__Evas__Group_gad3ec61f2aa03df4d3dbfd0d311e0c8dc}{ecore\_evas\_free}(d.ee);
   \hyperlink{group__Ecore__Evas__Group_gab8fa311077f749190c9b622f672b2214}{ecore\_evas\_shutdown}();
   \textcolor{keywordflow}{return} -1;
\}
\end{DoxyCodeInclude}
 