void ViewerDialog::tickEvent()
{
const QModelIndex& i2 = viewer->getModel().getNextItem(viewer->getCurrentRow());
if(isSlide && i2.isValid()) {
nextEvent();
QTimer::singleShot(3000, this, SLOT(tickEvent()));
} else {
aSlide->setText("&Start slide show");
aSlide->setStatusTip("Start slide show");
aSlide->setIcon(QIcon(":/res/resources/play.png"));
isSlide = false;
}
}
void ViewerDialog::slideEvent() {
if(!isSlide) {
aSlide->setText("&Stop slide show");
aSlide->setStatusTip("Stop slide show");
aSlide->setIcon(QIcon(":/res/resources/stop.png"));
isSlide = true;
QTimer::singleShot(3000, this, SLOT(tickEvent()));
} else {
aSlide->setText("&Start slide show");
aSlide->setStatusTip("Start slide show");
aSlide->setIcon(QIcon(":/res/resources/play.png"));
isSlide = false;
}
}
void Sdl2Application::mainLoop() {
#ifndef CORRADE_TARGET_EMSCRIPTEN
const UnsignedInt timeBefore = _minimalLoopPeriod ? SDL_GetTicks() : 0;
#endif
SDL_Event event;
while(SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_WINDOWEVENT:
switch(event.window.event) {
case SDL_WINDOWEVENT_RESIZED: {
#ifndef CORRADE_TARGET_IOS
viewportEvent({event.window.data1, event.window.data2});
#else
/* On iOS the window event is in points and not pixels,
but we need pixels to call glViewport() properly */
Vector2i drawableSize;
SDL_GL_GetDrawableSize(_window, &drawableSize.x(), &drawableSize.y());
viewportEvent(drawableSize);
#endif
_flags |= Flag::Redraw;
} break;
case SDL_WINDOWEVENT_EXPOSED:
_flags |= Flag::Redraw;
break;
} break;
case SDL_KEYDOWN:
case SDL_KEYUP: {
KeyEvent e(static_cast<KeyEvent::Key>(event.key.keysym.sym), fixedModifiers(event.key.keysym.mod));
event.type == SDL_KEYDOWN ? keyPressEvent(e) : keyReleaseEvent(e);
} break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP: {
MouseEvent e(static_cast<MouseEvent::Button>(event.button.button), {event.button.x, event.button.y});
event.type == SDL_MOUSEBUTTONDOWN ? mousePressEvent(e) : mouseReleaseEvent(e);
} break;
case SDL_MOUSEWHEEL:
if(event.wheel.y != 0) {
MouseEvent e(event.wheel.y > 0 ? MouseEvent::Button::WheelUp : MouseEvent::Button::WheelDown, {event.wheel.x, event.wheel.y});
mousePressEvent(e);
} break;
case SDL_MOUSEMOTION: {
MouseMoveEvent e({event.motion.x, event.motion.y}, {event.motion.xrel, event.motion.yrel}, static_cast<MouseMoveEvent::Button>(event.motion.state));
mouseMoveEvent(e);
break;
}
case SDL_QUIT:
#ifndef CORRADE_TARGET_EMSCRIPTEN
_flags |= Flag::Exit;
#else
emscripten_cancel_main_loop();
#endif
return;
}
}
/* Tick event */
if(!(_flags & Flag::NoTickEvent)) tickEvent();
/* Draw event */
if(_flags & Flag::Redraw) {
_flags &= ~Flag::Redraw;
drawEvent();
#ifndef CORRADE_TARGET_EMSCRIPTEN
/* If VSync is not enabled, delay to prevent CPU hogging (if set) */
if(!(_flags & Flag::VSyncEnabled) && _minimalLoopPeriod) {
const UnsignedInt loopTime = SDL_GetTicks() - timeBefore;
if(loopTime < _minimalLoopPeriod)
SDL_Delay(_minimalLoopPeriod - loopTime);
}
#endif
return;
}
#ifndef CORRADE_TARGET_EMSCRIPTEN
/* If not drawing anything, delay to prevent CPU hogging (if set) */
if(_minimalLoopPeriod) {
const UnsignedInt loopTime = SDL_GetTicks() - timeBefore;
if(loopTime < _minimalLoopPeriod)
SDL_Delay(_minimalLoopPeriod - loopTime);
}
/* Then, if the tick event doesn't need to be called periodically, wait
indefinitely for next input event */
if(_flags & Flag::NoTickEvent) SDL_WaitEvent(nullptr);
#endif
}