83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
//
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// Double-buffered window code for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2018 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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/** \file
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Fl_Double_Window implementation.
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*/
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#include <FL/Fl.H>
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#include <FL/platform.H>
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#include <FL/Fl_Double_Window.H>
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#include <FL/fl_draw.H>
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#include "Fl_Window_Driver.H"
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// On systems that support double buffering "naturally" the base
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// Fl_Window class will probably do double-buffer and this subclass
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// does nothing.
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Fl_Double_Window::Fl_Double_Window(int W, int H, const char *l)
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: Fl_Window(W, H, l)
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{
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type(FL_DOUBLE_WINDOW);
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}
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Fl_Double_Window::Fl_Double_Window(int X, int Y, int W, int H, const char *l)
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: Fl_Window(X,Y,W,H,l)
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{
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type(FL_DOUBLE_WINDOW);
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}
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void Fl_Double_Window::show() {
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Fl_Window::show();
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}
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void Fl_Double_Window::resize(int X,int Y,int W,int H) {
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int ow = w();
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int oh = h();
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Fl_Window::resize(X,Y,W,H);
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Fl_X *myi = Fl_X::flx(this);
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if (myi && Fl_Window_Driver::driver(this)->other_xid && (ow < w() || oh < h() || is_a_rescale()))
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Fl_Window_Driver::driver(this)->destroy_double_buffer();
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}
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void Fl_Double_Window::hide() {
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Fl_X *myi = Fl_X::flx(this);
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if (myi && Fl_Window_Driver::driver(this)->other_xid) {
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Fl_Window_Driver::driver(this)->destroy_double_buffer();
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}
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Fl_Window::hide();
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}
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void Fl_Double_Window::flush()
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{
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Fl_Window_Driver::driver(this)->flush_double();
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}
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/**
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The destructor <I>also deletes all the children</I>. This allows a
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whole tree to be deleted at once, without having to keep a pointer to
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all the children in the user code.
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*/
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Fl_Double_Window::~Fl_Double_Window() {
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hide();
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}
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