From 22c3c55de44b9b900b5e4d7040a9c3f906d0bfa1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= Date: Fri, 26 Apr 2019 15:33:49 +0200 Subject: wasm: install one browser window resize handler Install one browser window resize handler instead of per-canvas resize handlers, which avoids having to uninstall on QScreen destruction. Task-number: QTBUG-75463 Change-Id: I8345262a906ed735f8e9e146f1e963f515cf0d25 Reviewed-by: Lorn Potter --- src/plugins/platforms/wasm/qwasmintegration.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'src/plugins/platforms/wasm/qwasmintegration.cpp') diff --git a/src/plugins/platforms/wasm/qwasmintegration.cpp b/src/plugins/platforms/wasm/qwasmintegration.cpp index e601d553f2..703b0fde0b 100644 --- a/src/plugins/platforms/wasm/qwasmintegration.cpp +++ b/src/plugins/platforms/wasm/qwasmintegration.cpp @@ -115,6 +115,21 @@ QWasmIntegration::QWasmIntegration() } emscripten::val::global("window").set("onbeforeunload", val::module_property("qtBrowserBeforeUnload")); + + // install browser window resize handler + auto onWindowResize = [](int eventType, const EmscriptenUiEvent *e, void *userData) -> int { + Q_UNUSED(eventType); + Q_UNUSED(e); + Q_UNUSED(userData); + + // This resize event is called when the HTML window is resized. Depending + // on the page layout the the canvas(es) might also have been resized, so we + // update the Qt screen sizes (and canvas render sizes). + if (QWasmIntegration *integration = QWasmIntegration::get()) + integration->resizeAllScreens(); + return 0; + }; + emscripten_set_resize_callback(nullptr, nullptr, 1, onWindowResize); } QWasmIntegration::~QWasmIntegration() @@ -245,4 +260,11 @@ void QWasmIntegration::resizeScreen(const QString &canvasId) m_screens.value(canvasId)->updateQScreenAndCanvasRenderSize(); } +void QWasmIntegration::resizeAllScreens() +{ + qDebug() << "resizeAllScreens"; + for (QWasmScreen *screen : m_screens) + screen->updateQScreenAndCanvasRenderSize(); +} + QT_END_NAMESPACE -- cgit v1.2.3