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/*! \file
Values of the bits stored in Widget::damage().
When redrawing your widgets you should look at the damage bits to
see what parts of your widget need redrawing. The Widget::handle()
method can then set individual damage bits to limit the amount of
drawing that needs to be done, and the Widget::draw() method can
test these bits to decide what to draw:
\code
MyClass::handle(int event) {
...
if (change_to_part1) damage(1);
if (change_to_part2) damage(2);
if (change_to_part3) damage(4);
}
MyClass::draw() {
if (damage() & fltk::DAMAGE_ALL) {
... draw frame/box and other static stuff ...
}
if (damage() & (fltk::DAMAGE_ALL | 1)) draw_part1();
if (damage() & (fltk::DAMAGE_ALL | 2)) draw_part2();
if (damage() & (fltk::DAMAGE_ALL | 4)) draw_part3();
}
\endcode
Except for DAMAGE_ALL, each widget is allowed to assign any meaning
to any of the bits it wants. The enumerations are just to provide
suggested meanings.
*/
#ifndef fltk_damage_h
#define fltk_damage_h
namespace fltk {
enum {
DAMAGE_VALUE = 0x01,
DAMAGE_PUSHED = 0x02,
DAMAGE_SCROLL = 0x04,
DAMAGE_OVERLAY = 0x04, // reused value
DAMAGE_HIGHLIGHT = 0x08,
DAMAGE_CHILD = 0x10,
DAMAGE_CHILD_LABEL = 0x20,
DAMAGE_EXPOSE = 0x40,
DAMAGE_CONTENTS = 0x40, // reused value
DAMAGE_ALL = 0x80
};
}
#endif
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