forked from enlightenment/efl
80a3a87fa9
Subject: [E-devel] [Patch][elm_map] Fix zoom & rotated coordinates bug In my point of view, elm_map did not consider zooming & rotation by using Evas_Map initially. There are no problems if you use only elm_map_zoom_set(). But if you use pinch gesture or wheel to do subtle zooming & rotating, the calculations of coordinates are not correct currently. I have fixed these problem and also made some utility APIs for user convenience. I made following 3 APIs. 1. elm_map_utils_size_get() Currently users can only get integer zoom level by using elm_map_zoom_get(). So if user want to calculate full map size, user should calculate pow(2.0, zoom level) * tile size. Furthermore, user assumes tile size as 256. (tile size can be changed!!) Also it's not correct sometimes because Evas_map is used for subtle zooming between zoom levels. Above APIs return correct full map size. 2. elm_map_utils_region_get() It can used for getting left top coordinates, center coordinates and width, height of currently shown map area. 3. elm_map_utils_convert_canvas_into_geo() Currently it is hard to converting x, y coordinates to geographical longitude, latitude because of subtle zooming & rotating. If use wants to get it, user uses combination of above functions and more. It is harsh job. This function is used for getting longitude, latitude from x, y coordinates of current viewport. SVN revision: 67286 |
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