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drm/rect: Add drm_rect_translate_to()

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Add a helper to translate a rectangle to an absolute position.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190930134214.24702-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2019-09-30 16:42:11 +03:00
parent f59769c52c
commit 763ba2eca0
1 changed files with 14 additions and 0 deletions
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14
include/drm/drm_rect.h
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@ -106,6 +106,20 @@ static inline void drm_rect_translate(struct drm_rect *r, int dx, int dy)
r->y2 += dy;
}
/**
* drm_rect_translate_to - translate the rectangle to an absolute position
* @r: rectangle to be tranlated
* @x: horizontal position
* @y: vertical position
*
* Move rectangle @r to @x in the horizontal direction,
* and to @y in the vertical direction.
*/
static inline void drm_rect_translate_to(struct drm_rect *r, int x, int y)
{
drm_rect_translate(r, x - r->x1, y - r->y1);
}
/**
* drm_rect_downscale - downscale a rectangle
* @r: rectangle to be downscaled