emotion/ratio - Explain how to use emotion_object_ratio_get().
SVN revision: 62068
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2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b
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2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b1d00>
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204 165.637 128 -128 re W n
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q 1 0 0 -1 0 165.636871 cm
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429.754 0.406 127.199 127.199 re S Q
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%%Trailer
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count op_count sub {pop} repeat
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countdictstack dict_count sub {end} repeat
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%%EOF
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Binary file not shown.
After Width: | Height: | Size: 13 KiB |
|
@ -552,6 +552,66 @@ EAPI Eina_Bool emotion_object_audio_handled_get (const Evas_Object *obj);
|
||||||
* so the aspect won't be changed (by wrongly resizing the object). Or to crop
|
* so the aspect won't be changed (by wrongly resizing the object). Or to crop
|
||||||
* the video correctly, if necessary.
|
* the video correctly, if necessary.
|
||||||
*
|
*
|
||||||
|
* The described behavior can be applied like following. Consider a given
|
||||||
|
* emotion object that we want to position inside an area, which we will
|
||||||
|
* represent by @c w and @c h. Since we want to position this object either
|
||||||
|
* stretching, or filling the entire area but overflowing the video, or just
|
||||||
|
* adjust the video to fit inside the area without keeping the aspect ratio, we
|
||||||
|
* must compare the video aspect ratio with the area aspect ratio:
|
||||||
|
* @code
|
||||||
|
* int w = 200, h = 300; // an arbitrary value which represents the area where
|
||||||
|
* // the video would be placed
|
||||||
|
* int vw, vh;
|
||||||
|
* double r, vr = emotion_object_ratio_get(obj);
|
||||||
|
* r = (double)w / h;
|
||||||
|
* @endcode
|
||||||
|
*
|
||||||
|
* Now, if we want to make the video fit inside the area, the following code
|
||||||
|
* would do it:
|
||||||
|
* @code
|
||||||
|
* if (vr > r) // the video is wider than the area
|
||||||
|
* {
|
||||||
|
* vw = w;
|
||||||
|
* vh = w / vr;
|
||||||
|
* }
|
||||||
|
* else // the video is taller than the area
|
||||||
|
* {
|
||||||
|
* vh = h;
|
||||||
|
* vw = h * vr;
|
||||||
|
* }
|
||||||
|
* evas_object_resize(obj, vw, vh);
|
||||||
|
* @endcode
|
||||||
|
*
|
||||||
|
* And for keeping the aspect ratio but making the video fill the entire area,
|
||||||
|
* overflowing the content which can't fit inside it, we would do:
|
||||||
|
* @code
|
||||||
|
* if (vr > r) // the video is wider than the area
|
||||||
|
* {
|
||||||
|
* vh = h;
|
||||||
|
* vw = h * vr;
|
||||||
|
* }
|
||||||
|
* else // the video is taller than the area
|
||||||
|
* {
|
||||||
|
* vw = w;
|
||||||
|
* vh = w / vr;
|
||||||
|
* }
|
||||||
|
* evas_object_resize(obj, vw, vh);
|
||||||
|
* @endcode
|
||||||
|
*
|
||||||
|
* Finally, by just resizing the video to the video area, we would have the
|
||||||
|
* video stretched:
|
||||||
|
* @code
|
||||||
|
* vw = w;
|
||||||
|
* vh = h;
|
||||||
|
* evas_object_resize(obj, vw, vh);
|
||||||
|
* @endcode
|
||||||
|
*
|
||||||
|
* The following diagram exemplifies what would happen to the video,
|
||||||
|
* respectively, in each case:
|
||||||
|
*
|
||||||
|
* @image html emotion_ratio.png
|
||||||
|
* @image latex emotion_ratio.eps width=\textwidth
|
||||||
|
*
|
||||||
* @note This function returns the aspect ratio that the video @b should be, but
|
* @note This function returns the aspect ratio that the video @b should be, but
|
||||||
* sometimes the reported size from emotion_object_size_get() represents a
|
* sometimes the reported size from emotion_object_size_get() represents a
|
||||||
* different aspect ratio. You can safely resize the video to respect the aspect
|
* different aspect ratio. You can safely resize the video to respect the aspect
|
||||||
|
|
Loading…
Reference in New Issue