boolean GraphicMaster::effect (const Event& e, Tool& tool) {
boolean flag = true;
Window* w = e.window();
if (w != nil) {
w->cursor(window_cursor);
Canvas* c = w->canvas();
long count = _gr_list->count();
Coord l, b, r, t;
for (long i = 0; i < count && flag; i++) {
Graphic* target = _gr_list->item(i);
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
flag = target->effect(e, tool);
if (flag) {
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
}
target->flush();
CanvasRep& rep = *c->rep();
CanvasDamage& cd = rep.damage_;
rep.start_repair();
drawclipped(c, cd.left, cd.bottom, cd.right, cd.top);
rep.finish_repair();
}
_gr_list->remove_all();
}
return flag;
}
boolean GraphicMaster::grasp (const Event& e, Tool& tool) {
if (window_cursor == nil) {
window_cursor = e.window()->cursor();
}
boolean flag = false;
unsigned int tool_type = tool.tool();
switch (tool_type) {
case Tool::move:
case Tool::scale:
case Tool::rotate:
{
float tol = 2.0;
BoxObj box(
e.pointer_x()-tol, e.pointer_y()-tol,
e.pointer_x()+tol, e.pointer_y()+tol
);
Graphic* target = last_intersecting(box);
if (target != nil) {
Window* w = e.window();
Canvas* c = w->canvas();
w->cursor(grabber_cursor);
ToolState& ts = tool.toolstate();
total_gs(ts._gs);
_gr_list->append(target);
Coord l, b, r, t;
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
flag = target->grasp(e, tool);
if (flag) {
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
}
CanvasRep& rep = *c->rep();
CanvasDamage& cd = rep.damage_;
rep.start_repair();
drawclipped(c, cd.left, cd.bottom, cd.right, cd.top);
rep.finish_repair();
}
break;
}
}
return flag;
}
boolean GraphicMaster::manipulating (const Event& e, Tool& tool) {
boolean flag = true;
long count = _gr_list->count();
Coord l, b, r, t;
Window* w = e.window();
Canvas* c = w->canvas();
for (long i = 0; i < count && flag; i++) {
Graphic* target = _gr_list->item(i);
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
flag = target->manipulating(e, tool);
if (flag) {
target->getbounds(l, b, r, t);
c->damage(l, b, r, t);
}
CanvasRep& rep = *c->rep();
CanvasDamage& cd = rep.damage_;
rep.start_repair();
drawclipped(c, cd.left, cd.bottom, cd.right, cd.top);
rep.finish_repair();
w->display()->flush();
}
return flag;
}
Graphic* PolyGraphic::last_within (BoxObj& gb) {
GlyphIndex count = _body->count();
Coord l, b, r, t;
for (GlyphIndex i = count-1; i >= 0; i--) {
Graphic* gr = (Graphic*) _body->component(i);
gr->getbounds(l, b, r, t);
BoxObj box(l, b, r, t);
if (box.Within(gb)) {
return gr;
}
}
return nil;
}