mirror of https://github.com/fltk/fltk
Fix use of several FLTK widgets above an GL scene.
The code failed with 2 or more widgets when FLTK would trigger partial redraws of the widgets, unless the Fl_Gl_Window was FL_DAMAGE_ALL. This commit also adds a second FLTK widget to example/OpenGL3test to check this multiple widget situation, and fixes an error where operator ! was used instead of ~ .
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@ -163,7 +163,7 @@ public:
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add_output("\nThis platform does not support OpenGL V3 :\n"
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"FLTK widgets will appear but the programmed "
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"rendering pipeline will not run.\n");
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mode(mode() & !FL_OPENGL3);
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mode(mode() & ~FL_OPENGL3);
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}
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redraw();
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}
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@ -230,18 +230,22 @@ void add_output(const char *format, ...)
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}
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void button_cb(Fl_Widget *, void *) {
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add_output("run button callback\n");
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void button_cb(Fl_Widget *widget, void *) {
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add_output("run %s callback\n", widget->label());
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}
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void add_widgets(Fl_Gl_Window *g) {
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Fl::set_color(FL_FREE_COLOR, 255, 255, 255, 140); // partially transparent white
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g->begin();
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// Create here widgets to go above the GL3 scene
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Fl_Button* b = new Fl_Button( 0, 170, 60, 30, "button");
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Fl_Button* b = new Fl_Button( 0, 0, 60, 30, "button");
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b->color(FL_FREE_COLOR);
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b->box(FL_BORDER_BOX );
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b->box(FL_DOWN_BOX );
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b->callback(button_cb, NULL);
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Fl_Button* b2 = new Fl_Button( 0, 170, 60, 30, "button2");
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b2->color(FL_FREE_COLOR);
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b2->box(FL_BORDER_BOX );
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b2->callback(button_cb, NULL);
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g->end();
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}
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@ -344,6 +344,7 @@ void Fl_Gl_Window::draw_overlay() {}
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*/
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void Fl_Gl_Window::draw_begin() {
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if (mode() & FL_OPENGL3) pGlWindowDriver->switch_to_GL1();
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damage(FL_DAMAGE_ALL); // always redraw all GL widgets above the GL scene
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Fl_Surface_Device::push_current( Fl_OpenGL_Display_Device::display_device() );
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Fl_OpenGL_Graphics_Driver *drv = (Fl_OpenGL_Graphics_Driver*)Fl_Surface_Device::surface()->driver();
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drv->pixels_per_unit_ = pixels_per_unit();
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