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edj_viewer - keep the current viewport in the scroller while scaling up/down

This commit is contained in:
ChunEon Park 2014-02-09 12:20:51 +09:00
parent a6c73fcbf8
commit 6b3bbeb65b
1 changed files with 20 additions and 2 deletions
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22
src/bin/edj_viewer.c
View File

@ -371,14 +371,32 @@ view_scale_set(view_data *vd, double scale)
if (!vd->layout) return;
if (scale == edje_object_scale_get(vd->layout)) return;
int pminw, pminh;
evas_object_size_hint_min_get(vd->layout, &pminw, &pminh);
Evas_Coord sx, sy, sw, sh;
elm_scroller_region_get(vd->scroller, &sx, &sy, &sw, &sh);
edje_object_scale_set(vd->layout, scale);
view_obj_min_update(vd->layout);
//adjust scroller position according to the scale change.
int minw, minh;
evas_object_size_hint_min_get(vd->layout, &minw, &minh);
//a. center position of the scroller
double cx = ((double)sx + ((double)sw * 0.5));
double cy = ((double)sy + ((double)sh * 0.5));
//b. multiply scale value
cx *= (1 + (((double)(minw - pminw))/pminw));
cy *= (1 + (((double)(minh - pminh))/pminh));
elm_scroller_region_show(vd->scroller, ((Evas_Coord) cx) - (sw / 2),
((Evas_Coord) cy) - (sh / 2), sw, sh);
//FIXME: Update the size for weird text ellipsis.
Evas_Coord w, h;
evas_object_geometry_get(vd->layout, NULL, NULL, &w, &h);
evas_object_resize(vd->layout, 0, 0);
evas_object_resize(vd->layout, w, h);
}