Imported Upstream version 0.13.2+dsfg1

obs/qt-display.cpp

@@ -0,0 +1,88 @@
+#include "qt-display.hpp"
+#include "qt-wrappers.hpp"
+#include "display-helpers.hpp"
+#include <QWindow>
+#include <QScreen>
+#include <QResizeEvent>
+#include <QShowEvent>
+
+OBSQTDisplay::OBSQTDisplay(QWidget *parent, Qt::WindowFlags flags)
+	: QWidget(parent, flags)
+{
+	setAttribute(Qt::WA_PaintOnScreen);
+	setAttribute(Qt::WA_StaticContents);
+	setAttribute(Qt::WA_NoSystemBackground);
+	setAttribute(Qt::WA_OpaquePaintEvent);
+	setAttribute(Qt::WA_DontCreateNativeAncestors);
+	setAttribute(Qt::WA_NativeWindow);
+
+	auto windowVisible = [this] (bool visible)
+	{
+		if (!visible)
+			return;
+
+		if (!display) {
+			CreateDisplay();
+		} else {
+			QSize size = GetPixelSize(this);
+			obs_display_resize(display, size.width(), size.height());
+		}
+	};
+
+	auto sizeChanged = [this] (QScreen*)
+	{
+		CreateDisplay();
+
+		QSize size = GetPixelSize(this);
+		obs_display_resize(display, size.width(), size.height());
+	};
+
+	connect(windowHandle(), &QWindow::visibleChanged, windowVisible);
+	connect(windowHandle(), &QWindow::screenChanged, sizeChanged);
+}
+
+void OBSQTDisplay::CreateDisplay()
+{
+	if (display || !windowHandle()->isExposed())
+		return;
+
+	QSize size = GetPixelSize(this);
+
+	gs_init_data info      = {};
+	info.cx                = size.width();
+	info.cy                = size.height();
+	info.format            = GS_RGBA;
+	info.zsformat          = GS_ZS_NONE;
+
+	QTToGSWindow(winId(), info.window);
+
+	display = obs_display_create(&info);
+
+	emit DisplayCreated(this);
+}
+
+void OBSQTDisplay::resizeEvent(QResizeEvent *event)
+{
+	QWidget::resizeEvent(event);
+
+	CreateDisplay();
+
+	if (isVisible() && display) {
+		QSize size = GetPixelSize(this);
+		obs_display_resize(display, size.width(), size.height());
+	}
+
+	emit DisplayResized();
+}
+
+void OBSQTDisplay::paintEvent(QPaintEvent *event)
+{
+	CreateDisplay();
+
+	QWidget::paintEvent(event);
+}
+
+QPaintEngine *OBSQTDisplay::paintEngine() const
+{
+	return nullptr;
+}