On Tue, Sep 28, 2010 at 3:08 AM, Gustavo Sverzut Barbieri
<[email protected]> wrote:
> For those interested in learning Edje and wonder what is the so called
> "external" support, here is a small demo video player that I wrote
> entirely in Emotion. You need the last Emotion to get the position in
> slider.
>
> PS: I'm not in the mood for wiki, if you are please add it there somewhere :-)
>
Me thinks it's worth some blogging somehow comparing to Qt QML, isn't it? ;)
>
> /*
> Super-concise video player example using Edje/Emotion/Elementary.
>
> This is all in Edje by means of type:EXTERNAL, you don't need any C
> code other than emotion and edje installed with edje_external
> support enabled.
>
> Compile: edje_cc emotion-elementary-externals.edc
> Run....: edje_player emotion-elementary-externals.edj
>
> */
> collections {
> group { name: "main";
>
> externals { /* declare the modules you want to load */
> external: "emotion"; /* video player engine */
> external: "elm"; /* toolkit/widgets */
> }
>
> parts {
> part { name: "bg"; /* dark gray rectangle as background */
> type: RECT;
> description { state: "default" 0.0;
> color: 64 64 64 255;
> }
> }
>
> part { name: "video"; /* video object */
> type: EXTERNAL;
> source: "emotion";
> description { state: "default" 0.0;
> }
> }
>
> part { name: "title";
> type: TEXT;
> effect: SOFT_SHADOW;
> description { state: "default" 0.0;
> color: 255 255 255 255;
> color3: 0 0 0 255;
> align: 0.5 0.0;
> rel1 {
> relative: 0.0 0.0;
> offset: 10 2;
> }
> rel2 {
> relative: 1.0 0.0;
> offset: -11 10;
> }
> text {
> font: "Sans:style=Bold";
> align: 0.5 0.0;
> size: 10;
> min: 0 1;
> text: "";
> }
> }
> }
>
> part { name: "controls-clipper"; /* clipper to control visibility */
> type: RECT;
> description { state: "default" 0.0;
> color: 255 255 255 32;
> }
> description { state: "visible" 0.0;
> color: 255 255 255 255;
> }
> }
>
> part { name: "controls-bg"; /* controls background as
> semi-transparent black at bottom edge */
> type: RECT;
> clip_to: "controls-clipper";
> description { state: "default" 0.0;
> color: 0 0 0 128;
> rel1 {
> relative: 0.0 1.0;
> offset: 0 -40;
> }
> rel2 {
> relative: 1.0 1.0;
> offset: -1 -1;
> }
> }
> }
>
> part { name: "play"; /* play button at bottom-left (relative
> to controls-bg) */
> type: EXTERNAL;
> source: "elm/button";
> clip_to: "controls-clipper";
> description { state: "default" 0.0;
> rel1 {
> relative: 0.0 0.0;
> offset: 0 0;
> to: "controls-bg";
> }
> rel2 {
> relative: 0.0 1.0;
> offset: 50 -1;
> to: "controls-bg";
> }
> params.string: "icon" "apps";
> }
> }
>
> part { name: "open"; /* open file button next to play button */
> type: EXTERNAL;
> source: "elm/fileselector_button";
> clip_to: "controls-clipper";
> description { state: "default" 0.0;
> rel1 {
> relative: 0.0 0.0;
> offset: 52 0;
> to: "controls-bg";
> }
> rel2 {
> relative: 0.0 1.0;
> offset: 102 -1;
> to: "controls-bg";
> }
> params.string: "icon" "folder";
> }
> }
>
> part { name: "time"; /* time/progress */
> type: EXTERNAL;
> source: "elm/slider";
> clip_to: "controls-clipper";
> description { state: "default" 0.0;
> rel1 {
> relative: 0.0 0.0;
> offset: 104 0;
> to: "controls-bg";
> }
> rel2 {
> relative: 1.0 1.0;
> offset: -1 -1;
> to: "controls-bg";
> }
> }
> }
>
> part { name: "controls-eventarea"; /* event area so we catch
> mouse in and out, repeat events so buttons get them */
> type: RECT;
> repeat_events: 1;
> description {
> state: "default" 0.0;
> color: 255 255 255 0; /* fully transparent as we don't
> need any visual feedback */
> rel1.to: "controls-bg";
> rel2.to: "controls-bg";
> }
> }
>
> programs {
> /* animated 0.2 linear fade in/out if mouse is over controls */
> program { signal: "mouse,in";
> source: "controls-eventarea";
> action: STATE_SET "visible" 0.0;
> transition: LINEAR 0.2;
> target: "controls-clipper";
> }
> program { signal: "mouse,out";
> source: "controls-eventarea";
> action: STATE_SET "default" 0.0;
> transition: LINEAR 0.2;
> target: "controls-clipper";
> }
>
> /* toggle video playing state when play is clicked */
> program { name: "toggle-play-video";
> signal: "clicked";
> source: "play";
> script {
> new v = external_param_get_bool(PART:"video", "play");
> external_param_set_bool(PART:"video", "play", !v);
> }
> }
>
> /* whenever file is chosen, set and play it */
> program { signal: "file,chosen";
> source: "open";
> action: PARAM_COPY "open" "path" "video" "file";
> after: "play-video";
> after: "set-title";
> }
> program { name: "play-video";
> action: PARAM_SET "video" "play" "1";
> }
> program { name: "set-title";
> action: PARAM_COPY "open" "path" "title" "text";
> }
>
> /* if position changes, set slider (time) */
> program { signal: "position_update";
> source: "video";
> script {
> new Float:p, Float:len;
>
> p = external_param_get_float(PART:"video", "position");
> len = external_param_get_float(PART:"video", "play_length");
> if (len > 0.0)
> external_param_set_float(PART:"time", "value", p / len);
> }
> }
>
> /* if slider (time) changes, set the position (seek) */
> program { signal: "changed";
> source: "time";
> script {
> new Float:v, Float:len;
>
> v = external_param_get_float(PART:"time", "value");
> len = external_param_get_float(PART:"video", "play_length");
> if (len > 0.0)
> external_param_set_float(PART:"video",
> "position", v * len);
> }
> }
> }
> }
> }
> }
>
>
> --
> Gustavo Sverzut Barbieri
> http://profusion.mobi embedded systems
> --------------------------------------
> MSN: [email protected]
> Skype: gsbarbieri
> Mobile: +55 (19) 9225-2202
>
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--
Eduardo de Barros Lima
[email protected]
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