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Redraw speedup patch from Bill.

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git-svn-id: file:///fltk/svn/fltk/trunk@141 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet 1998-12-07 13:38:40 +00:00
parent eb9fdfb01f
commit 12e7a1cda4
2 changed files with 51 additions and 36 deletions
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5
FL/x.H
View File

@ -1,5 +1,5 @@
//
// "$Id: x.H,v 1.7 1998/12/02 15:51:34 mike Exp $"
// "$Id: x.H,v 1.8 1998/12/07 13:38:39 mike Exp $"
//
// X11 header file for the Fast Light Tool Kit (FLTK).
//
@ -60,6 +60,7 @@ extern XFontStruct* fl_xfont;
ulong fl_xpixel(Fl_Color i);
ulong fl_xpixel(uchar r, uchar g, uchar b);
void fl_clip_region(Region);
Region XRectangleRegion(int x, int y, int w, int h); // in fl_rect.cxx
// feed events into fltk:
int fl_handle(const XEvent&);
@ -117,5 +118,5 @@ extern int fl_background_pixel; // hack into Fl_X::make_xid()
#endif
//
// End of "$Id: x.H,v 1.7 1998/12/02 15:51:34 mike Exp $".
// End of "$Id: x.H,v 1.8 1998/12/07 13:38:39 mike Exp $".
//

58
src/Fl_x.cxx
View File

@ -1,5 +1,5 @@
//
// "$Id: Fl_x.cxx,v 1.11 1998/12/07 13:36:23 mike Exp $"
// "$Id: Fl_x.cxx,v 1.12 1998/12/07 13:38:40 mike Exp $"
//
// X specific code for the Fast Light Tool Kit (FLTK).
//
@ -804,48 +804,62 @@ void Fl_Window::make_current() {
#include <FL/fl_draw.H>
void Fl_Widget::damage(uchar flags) {
if (type() < FL_WINDOW) {
damage(flags, x(), y(), w(), h());
} else {
Fl_X* i = Fl_X::i((Fl_Window*)this);
if (i) {
if (i->region) {XDestroyRegion(i->region); i->region = 0;}
damage_ |= flags;
Fl::damage(FL_DAMAGE_CHILD);
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);}
Region XRectangleRegion(int x, int y, int w, int h); // in fl_rect.C
void Fl_Widget::damage(uchar flags, int X, int Y, int W, int H) {
if (type() < FL_WINDOW) {
damage_ |= flags;
if (parent()) parent()->damage(FL_DAMAGE_CHILD,X,Y,W,H);
} else {
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() && H>=h()) {damage(flags); return;}
Fl_X* i = Fl_X::i((Fl_Window*)this);
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 (damage()) {
if (w->damage()) {
// if we already have damage we must merge with existing region:
if (i->region) {
XRectangle R;
R.x = X; R.y = Y; R.width = W; R.height = H;
XUnionRectWithRegion(&R, i->region, i->region);
}
damage_ |= flags;
w->damage_ |= flags;
} else {
// create a new region:
if (i->region) XDestroyRegion(i->region);
i->region = XRectangleRegion(X,Y,W,H);
damage_ = flags;
w->damage_ = flags;
}
Fl::damage(FL_DAMAGE_CHILD);
}
}
}
void Fl_Window::flush() {
@ -858,5 +872,5 @@ void Fl_Window::flush() {
#endif
//
// End of "$Id: Fl_x.cxx,v 1.11 1998/12/07 13:36:23 mike Exp $".
// End of "$Id: Fl_x.cxx,v 1.12 1998/12/07 13:38:40 mike Exp $".
//