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Ephoto: Fix cropper slider math.

This commit is contained in:
Stephen Houston 2015-10-27 16:55:45 -05:00
parent 41a24cf1a6
commit 1acaef0e10
1 changed files with 78 additions and 67 deletions
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107
src/bin/ephoto_cropper.c
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@ -18,16 +18,12 @@ struct _Ephoto_Cropper
int offsetx;
int offsety;
int resizing;
int sliding;
};
static void
_calculate_cropper_size(void *data, Evas_Object *obj EINA_UNUSED, const char *emission EINA_UNUSED, const char *source EINA_UNUSED)
{
Ephoto_Cropper *ec = data;
if (!ec->sliding)
{
Edje_Message_Int_Set *msg;
char buf[PATH_MAX];
int w, h, cw, ch, iw, ih, nw, nh;
@ -54,83 +50,98 @@ _calculate_cropper_size(void *data, Evas_Object *obj EINA_UNUSED, const char *em
msg->val[2] = nh;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msg);
}
}
static void
_cropper_changed_width(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
Ephoto_Cropper *ec = data;
Edje_Message_Int_Set *msg;
int mw, cx, cw, ch, nw, nh, lx, lw, iw;
Edje_Message_Int_Set *msgl, *msgr;
int mw, cx, cw, nw, lx, lw, iw, left, right;
double scalew;
ec->sliding = 1;
mw = elm_slider_value_get(ec->cropw);
evas_object_geometry_get(ec->cropper, &cx, 0, &cw, &ch);
evas_object_geometry_get(ec->layout, &lx, 0, &lw, 0);
evas_object_geometry_get(ec->cropper, &cx, 0, &cw, 0);
evas_object_image_size_get(elm_image_object_get(ec->image), &iw, 0);
scalew = (double)lw/(double)iw;
nw = mw * scalew;
nh = ch;
scalew = (double)mw/(double)iw;
msg = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msg->count = 3;
if ((nw+cx) >= (lx+lw))
{
msg->val[0] = 8;
nw = cw-nw;
}
else
{
msg->val[0] = 4;
nw -= cw;
}
msg->val[1] = nw;
msg->val[2] = 0;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msg);
nw = lw*scalew;
left = (nw-cw)/2;
right = (nw-cw)/2;
ec->sliding = 0;
if ((cx+cw+right) >= (lx+lw))
{
right = (lx+lw)-(cx+cw);
left += left - right;
}
else if ((cx-left) <= lx)
{
left = cx-lx;
right += right - left;
}
left *= -1;
msgl = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msgl->count = 3;
msgl->val[0] = 8;
msgl->val[1] = left;
msgl->val[2] = 0;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msgl);
msgr = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msgr->count = 3;
msgr->val[0] = 4;
msgr->val[1] = right;
msgr->val[2] = 0;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msgr);
}
static void
_cropper_changed_height(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
Ephoto_Cropper *ec = data;
Edje_Message_Int_Set *msg;
int mh, ch, cy, nh, lh, ly, ih;
Edje_Message_Int_Set *msgt, *msgb;
int mh, ch, cy, nh, lh, ly, ih, left, top, bottom;
double scaleh;
ec->sliding = 1;
mh = elm_slider_value_get(ec->croph);
evas_object_geometry_get(ec->cropper, 0, &cy, 0, &ch);
evas_object_geometry_get(ec->layout, 0, &ly, 0, &lh);
evas_object_geometry_get(ec->cropper, 0, &cy, 0, &ch);
evas_object_image_size_get(elm_image_object_get(ec->image), 0, &ih);
scaleh = (double)lh/(double)ih;
nh = mh * scaleh;
scaleh = (double)mh/(double)ih;
nh = lh*scaleh;
top = (nh-ch)/2;
bottom = (nh-ch)/2;
msg = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msg->count = 3;
if ((nh+cy) >= (ly+lh))
if ((cy+ch+bottom) >= (ly+lh))
{
msg->val[0] = 2;
nh = ch-nh;
bottom = (ly+lh)-(cy+ch);
top += top - bottom;
}
else
else if ((cy-top) <= ly)
{
msg->val[0] = 6;
nh -= ch;
top = cy-ly;
bottom += bottom - top;
}
msg->val[1] = 0;
msg->val[2] = nh;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msg);
top *= -1;
ec->sliding = 0;
msgt = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msgt->count = 3;
msgt->val[0] = 2;
msgt->val[1] = 0;
msgt->val[2] = top;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msgt);
msgb = alloca(sizeof(Edje_Message_Int_Set) + (3*sizeof(int)));
msgb->count = 3;
msgb->val[0] = 6;
msgb->val[1] = 0;
msgb->val[2] = bottom;
edje_object_message_send(elm_layout_edje_get(ec->layout), EDJE_MESSAGE_INT_SET, 1, msgb);
}
static void