ImageButtonProto::ImageButtonProto(const char *back_tex, const char *up_tex, const char *down_tex, const char *font_name, FRect text_area) {
DASSERT(up_tex && down_tex);
if(back_tex)
back = DTexture::gui_mgr[back_tex];
up = DTexture::gui_mgr[up_tex];
down = DTexture::gui_mgr[down_tex];
if(font_name)
font = Font::mgr[font_name];
rect = IRect({0, 0}, back? back->size() : max(up->size(), down->size()));
text_rect = text_area.isEmpty()? IRect::empty() :
IRect( lerp(float(rect.min.x), float(rect.max.x), text_area.min.x),
lerp(float(rect.min.y), float(rect.max.y), text_area.min.y),
lerp(float(rect.min.x), float(rect.max.x), text_area.max.x),
lerp(float(rect.min.y), float(rect.max.y), text_area.max.y));
}
