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Merged damage changes into Fl.cxx. 

git-svn-id: file:///fltk/svn/fltk/trunk@161 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet 1998-12-15 15:40:30 +00:00
parent 98b5324977
commit 30800cc268
1 changed files with 76 additions and 2 deletions
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78
src/Fl.cxx
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@ -1,5 +1,5 @@
//
// "$Id: Fl.cxx,v 1.9 1998/12/15 15:38:15 mike Exp $"
// "$Id: Fl.cxx,v 1.10 1998/12/15 15:40:30 mike Exp $"
//
// Main event handling code for the Fast Light Tool Kit (FLTK).
//
@ -667,6 +667,80 @@ void Fl_Window::flush() {
draw();
}
#include <FL/fl_draw.H>
void Fl_Widget::damage(uchar flags) {
Fl_Widget* w = this;
while (w->type() < FL_WINDOW) {
w->damage_ |= flags;
w = w->parent();
if (!w) return;
flags = FL_DAMAGE_CHILD;
}
Fl_X* i = Fl_X::i((Fl_Window*)w);
if (i) {
if (i->region) {
// if there already is an update region then merge the area
// of the child with it:
if (w->damage() && w != this) {
w->damage(flags, x(), y(), this->w(), h());
return;
}
// otherwise it is faster to just damage the whole window and
// rely on Fl_Group only drawing the damaged children:
XDestroyRegion(i->region);
i->region = 0;
}
w->damage_ |= flags;
Fl::damage(FL_DAMAGE_CHILD);
}
}
void Fl_Widget::redraw() {damage(FL_DAMAGE_ALL);}
void Fl_Widget::damage(uchar flags, int X, int Y, int W, int H) {
Fl_Widget* w = this;
while (w->type() < FL_WINDOW) {
w->damage_ |= flags;
w = w->parent();
if (!w) return;
flags = FL_DAMAGE_CHILD;
}
// see if damage covers entire window:
if (X<=0 && Y<=0 && W>=w->w() && H>=w->h()) {w->damage(flags); return;}
Fl_X* i = Fl_X::i((Fl_Window*)w);
if (i) {
if (w->damage()) {
// if we already have damage we must merge with existing region:
if (i->region) {
#ifndef WIN32
XRectangle R;
R.x = X; R.y = Y; R.width = W; R.height = H;
XUnionRectWithRegion(&R, i->region, i->region);
#else
Region r = XRectangleRegion(X,Y,W,H);
CombineRgn(i->region,i->region,r,RGN_OR);
XDestroyRegion(r);
#endif
}
w->damage_ |= flags;
} else {
// create a new region:
if (i->region) XDestroyRegion(i->region);
i->region = XRectangleRegion(X,Y,W,H);
w->damage_ = flags;
}
Fl::damage(FL_DAMAGE_CHILD);
}
}
void Fl_Window::flush() {
make_current();
//if (damage() == FL_DAMAGE_EXPOSE && can_boxcheat(box())) fl_boxcheat = this;
fl_clip_region(i->region); i->region = 0;
draw();
}
//
// End of "$Id: Fl.cxx,v 1.9 1998/12/15 15:38:15 mike Exp $".
// End of "$Id: Fl.cxx,v 1.10 1998/12/15 15:40:30 mike Exp $".
//