mirror of https://github.com/fltk/fltk
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
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// This is a test of the minimal update code. The right slider has a
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// label that extends outside it's border, and the minimal update
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// assummes this does not happen. Thus there is *supposed* to be
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// display errors when you move the right-most or any other slider.
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// If you *don't* see these errors, then the minimal update is
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// broken!!!
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// I cannot emphasize how important it is to test this and make sure
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// any changes have not broken the minimal update. These sort of bugs
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// are extremely hard to fix and must be detected right away!
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// The reason it is important to fix this is that otherwise you will
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// swiftly end up with a toolkit that thinks it has to draw the window
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// 20 times each time the display changes. I don't care how fast the
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// machine is, this is an insane waste of resources, and should be
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// stopped!
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#include <stdlib.h>
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Slider.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Return_Button.H>
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int main(int argc, char **argv) {
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Fl_Window *window = new Fl_Window(400,320,argv[0]);
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window->resizable(*(new Fl_Box(FL_ENGRAVED_FRAME,10,10,300,300,
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"MINIMUM UPDATE TEST\n"
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"\n"
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"The slider on the right purposely\n"
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"draws outside it's boundaries.\n"
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"Moving it should leave old copies\n"
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"of the label. These copies should\n"
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"*not* be erased by any actions\n"
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"other than hiding and showing\n"
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"of that portion of the window\n"
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"or changing the button that\n"
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"intesects them.")));
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Fl_Slider *s;
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s = new Fl_Slider(320,10,20,300,"Too_Big_Label");
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s->align(0);
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new Fl_Button(20,270,100,30,"Button");
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new Fl_Return_Button(200,270,100,30,"Button");
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window->show(argc, argv);
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return Fl::run();
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}
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