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#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;
}
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