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libeek: add eek_keyboard_find_key_by_position().

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This commit is contained in:
Daiki Ueno
2010-08-05 12:31:43 +09:00
parent 94219bd31e
commit 039ea44520
10 changed files with 162 additions and 78 deletions
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56
eek/eek-keyboard.c
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@ -484,3 +484,59 @@ eek_keyboard_find_key_by_keycode (EekKeyboard *keyboard,
return EEK_KEYBOARD_GET_CLASS(keyboard)->find_key_by_keycode (keyboard,
keycode);
}
static gint
compare_section_by_position (EekElement *element, gpointer user_data)
{
EekSection *section = EEK_SECTION(element);
EekPoint *point = user_data;
gint angle;
EekBounds bounds;
EekPoint rotated;
eek_element_get_bounds (element, &bounds);
rotated.x = point->x - bounds.x;
rotated.y = point->y - bounds.y;
angle = eek_section_get_angle (section);
eek_point_rotate (&rotated, -angle);
if (0 <= rotated.x && 0 <= rotated.y &&
rotated.x <= bounds.width &&
rotated.y <= bounds.height)
return 0;
return -1;
}
static EekSection *
eek_keyboard_find_section_by_position (EekKeyboard *keyboard,
gdouble x,
gdouble y)
{
EekBounds bounds;
EekPoint point;
eek_element_get_bounds (EEK_ELEMENT(keyboard), &bounds);
point.x = x - bounds.x;
point.y = y - bounds.y;
return eek_container_find (EEK_CONTAINER(keyboard),
compare_section_by_position,
&point);
}
EekKey *
eek_keyboard_find_key_by_position (EekKeyboard *keyboard,
gdouble x,
gdouble y)
{
EekSection *section;
EekBounds bounds;
section = eek_keyboard_find_section_by_position (keyboard, x, y);
if (!section)
return NULL;
eek_element_get_bounds (EEK_ELEMENT(keyboard), &bounds);
x -= bounds.x;
y -= bounds.y;
return eek_section_find_key_by_position (section, x, y);
}