More double-buffering and region code stuff from Bill.
git-svn-id: file:///fltk/svn/fltk/trunk@191 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet
parent
680bdba2dd
commit
42aab2a991
111
src/Fl.cxx
111
src/Fl.cxx
@ -1,5 +1,5 @@
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//
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// "$Id: Fl.cxx,v 1.12 1999/01/04 19:27:00 mike Exp $"
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// "$Id: Fl.cxx,v 1.13 1999/01/07 16:47:40 mike Exp $"
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//
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// Main event handling code for the Fast Light Tool Kit (FLTK).
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//
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@ -595,69 +595,68 @@ void fl_throw_focus(Fl_Widget *o) {
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#include <FL/fl_draw.H>
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void Fl_Widget::redraw() {damage(FL_DAMAGE_ALL);}
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void Fl_Widget::damage(uchar flags) {
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Fl_Widget* w = this;
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while (w->type() < FL_WINDOW) {
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w->damage_ |= flags;
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w = w->parent();
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if (!w) return;
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flags = FL_DAMAGE_CHILD;
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}
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Fl_X* i = Fl_X::i((Fl_Window*)w);
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if (i) {
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if (i->region) {
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// if there already is an update region then merge the area
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// of the child with it:
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if (w->damage() && w != this) {
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w->damage(flags, x(), y(), this->w(), h());
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return;
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}
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// otherwise it is faster to just damage the whole window and
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// rely on Fl_Group only drawing the damaged children:
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XDestroyRegion(i->region);
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i->region = 0;
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}
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w->damage_ |= flags;
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if (type() < FL_WINDOW) {
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// damage only the rectangle covered by a child widget:
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damage(flags, x(), y(), w(), h());
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} else {
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// damage entire window by deleting the region:
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Fl_X* i = Fl_X::i((Fl_Window*)this);
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if (!i) return; // window not mapped, so ignore it
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if (i->region) {XDestroyRegion(i->region); i->region = 0;}
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damage_ |= flags;
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Fl::damage(FL_DAMAGE_CHILD);
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}
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}
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void Fl_Widget::redraw() {damage(FL_DAMAGE_ALL);}
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void Fl_Widget::damage(uchar flags, int X, int Y, int W, int H) {
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Fl_Widget* w = this;
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while (w->type() < FL_WINDOW) {
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w->damage_ |= flags;
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w = w->parent();
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if (!w) return;
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Fl_Widget* window = this;
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// mark all parent widgets between this and window with FL_DAMAGE_CHILD:
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while (window->type() < FL_WINDOW) {
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window->damage_ |= flags;
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window = window->parent();
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if (!window) return;
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flags = FL_DAMAGE_CHILD;
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}
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// see if damage covers entire window:
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if (X<=0 && Y<=0 && W>=w->w() && H>=w->h()) {w->damage(flags); return;}
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Fl_X* i = Fl_X::i((Fl_Window*)w);
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if (i) {
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if (w->damage()) {
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// if we already have damage we must merge with existing region:
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if (i->region) {
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#ifndef WIN32
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XRectangle R;
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R.x = X; R.y = Y; R.width = W; R.height = H;
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XUnionRectWithRegion(&R, i->region, i->region);
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#else
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Region r = XRectangleRegion(X,Y,W,H);
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CombineRgn(i->region,i->region,r,RGN_OR);
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XDestroyRegion(r);
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#endif
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}
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w->damage_ |= flags;
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} else {
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// create a new region:
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if (i->region) XDestroyRegion(i->region);
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i->region = XRectangleRegion(X,Y,W,H);
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w->damage_ = flags;
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}
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Fl::damage(FL_DAMAGE_CHILD);
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Fl_X* i = Fl_X::i((Fl_Window*)window);
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if (!i) return; // window not mapped, so ignore it
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if (X<=0 && Y<=0 && W>=window->w() && H>=window->h()) {
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// if damage covers entire window delete region:
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window->damage(flags);
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return;
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}
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// clip the damage to the window and quit if none:
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if (X < 0) {W += X; X = 0;}
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if (Y < 0) {H += Y; Y = 0;}
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if (W > window->w()-X) W = window->w()-X;
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if (H > window->h()-Y) H = window->h()-Y;
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if (W <= 0 || H <= 0) return;
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if (window->damage()) {
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// if we already have damage we must merge with existing region:
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if (i->region) {
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#ifndef WIN32
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XRectangle R;
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R.x = X; R.y = Y; R.width = W; R.height = H;
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XUnionRectWithRegion(&R, i->region, i->region);
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#else
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Region R = XRectangleRegion(X, Y, W, H);
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CombineRgn(i->region, i->region, R, RGN_OR);
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XDestroyRegion(R);
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#endif
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}
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window->damage_ |= flags;
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} else {
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// create a new region:
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if (i->region) XDestroyRegion(i->region);
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i->region = XRectangleRegion(X,Y,W,H);
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window->damage_ = flags;
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}
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Fl::damage(FL_DAMAGE_CHILD);
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}
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void Fl_Window::flush() {
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@ -668,5 +667,5 @@ void Fl_Window::flush() {
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}
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//
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// End of "$Id: Fl.cxx,v 1.12 1999/01/04 19:27:00 mike Exp $".
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// End of "$Id: Fl.cxx,v 1.13 1999/01/07 16:47:40 mike Exp $".
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//
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@ -1,5 +1,5 @@
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//
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// "$Id: Fl_Double_Window.cxx,v 1.10 1999/01/07 16:47:15 mike Exp $"
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// "$Id: Fl_Double_Window.cxx,v 1.11 1999/01/07 16:47:41 mike Exp $"
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//
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// Double-buffered window code for the Fast Light Tool Kit (FLTK).
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//
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@ -117,7 +117,7 @@ void Fl_Double_Window::flush(int eraseoverlay) {
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#if USE_XDBE
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if (use_xdbe) {
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// if this is true, copy rather than swap so back buffer is preserved:
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int copy = (!(damage()&FL_DAMAGE_ALL) || i->region || eraseoverlay);
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int copy = (i->region || eraseoverlay);
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if (i->backbuffer_bad) { // make sure we do a complete redraw...
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if (i->region) {XDestroyRegion(i->region); i->region = 0;}
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clear_damage(FL_DAMAGE_ALL);
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@ -192,5 +192,5 @@ Fl_Double_Window::~Fl_Double_Window() {
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}
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//
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// End of "$Id: Fl_Double_Window.cxx,v 1.10 1999/01/07 16:47:15 mike Exp $".
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// End of "$Id: Fl_Double_Window.cxx,v 1.11 1999/01/07 16:47:41 mike Exp $".
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//
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