#include "widgetwindowagent_p.h"
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#include <QtGui/QPainter>
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#include <QWKCore/qwindowkit_windows.h>
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#include <QWKCore/qwkconfig.h>
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#include <QWKCore/private/nativeeventfilter_p.h>
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namespace QWK {
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#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
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class WidgetBorderHandler;
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class WidgetBorderHandler : public QObject, public NativeEventFilter {
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public:
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explicit WidgetBorderHandler(QWidget *widget, AbstractWindowContext *ctx)
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: QObject(ctx), widget(widget), ctx(ctx) {
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widget->installEventFilter(this);
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ctx->installNativeEventFilter(this);
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updateGeometry();
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}
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inline bool isNormalWindow() const {
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return widget->windowState() &
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(Qt::WindowMinimized | Qt::WindowMaximized | Qt::WindowFullScreen);
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}
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void updateGeometry() {
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if (isNormalWindow()) {
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widget->setContentsMargins({
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0,
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ctx->property("borderThickness").toInt(),
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0,
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0,
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});
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} else {
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widget->setContentsMargins({});
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}
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}
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protected:
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bool nativeEventFilter(const QByteArray &eventType, void *message,
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QT_NATIVE_EVENT_RESULT_TYPE *result) override {
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Q_UNUSED(eventType)
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const auto msg = static_cast<const MSG *>(message);
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switch (msg->message) {
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case WM_DPICHANGED: {
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updateGeometry();
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break;
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}
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case WM_THEMECHANGED:
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case WM_SYSCOLORCHANGE:
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case WM_DWMCOLORIZATIONCOLORCHANGED: {
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widget->update();
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break;
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}
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case WM_SETTINGCHANGE: {
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if (!msg->wParam && msg->lParam &&
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std::wcscmp(reinterpret_cast<LPCWSTR>(msg->lParam), L"ImmersiveColorSet") ==
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0) {
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widget->update();
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}
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break;
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}
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case WM_PAINT: {
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// Let Qt paint first
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m_dispatcher->resume(eventType, message, result);
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// Upon receiving the WM_PAINT message, Qt will redraw the entire view, and we
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// must wait for it to finish redrawing before drawing this top border area
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ctx->virtual_hook(AbstractWindowContext::DrawWindows10BorderHook2, nullptr);
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return true;
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}
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default:
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break;
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}
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return false;
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}
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bool eventFilter(QObject *obj, QEvent *event) override {
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Q_UNUSED(obj)
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switch (event->type()) {
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case QEvent::UpdateRequest: {
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// Friend class helping to call `event`
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class HackedWidget : public QWidget {
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public:
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friend class QWK::WidgetBorderHandler;
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};
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// Let the widget paint first
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static_cast<HackedWidget *>(widget)->event(event);
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// Due to the timer or user action, Qt will redraw some regions spontaneously,
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// even if there is no WM_PAINT message, we must wait for it to finish redrawing
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// and then update the upper border area
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ctx->virtual_hook(AbstractWindowContext::DrawWindows10BorderHook2, nullptr);
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return true;
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}
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case QEvent::WindowStateChange: {
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updateGeometry();
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break;
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}
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case QEvent::WindowActivate:
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case QEvent::WindowDeactivate: {
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widget->update();
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break;
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}
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default:
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break;
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}
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return false;
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}
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QWidget *widget;
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AbstractWindowContext *ctx;
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};
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#endif
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void WidgetWindowAgentPrivate::setupWindows10BorderWorkaround() {
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#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
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// Install painting hook
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auto ctx = context.get();
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if (ctx->property("needBorderPainter").toBool()) {
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std::ignore = new WidgetBorderHandler(hostWidget, ctx);
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}
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#endif
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}
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}
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