diff options
Diffstat (limited to 'src/x11_in_qt.cpp')
| -rw-r--r-- | src/x11_in_qt.cpp | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/src/x11_in_qt.cpp b/src/x11_in_qt.cpp new file mode 100644 index 0000000..fcf96ab --- /dev/null +++ b/src/x11_in_qt.cpp @@ -0,0 +1,241 @@ +// Copyright 2011-2022 David Robillard <d@drobilla.net> +// Copyright 2015 Rui Nuno Capela <rncbc@rncbc.org> +// SPDX-License-Identifier: ISC + +#include "suil_internal.h" +#include "warnings.h" + +#include "lv2/core/lv2.h" +#include "lv2/ui/ui.h" +#include "suil/suil.h" + +SUIL_DISABLE_QT_WARNINGS +#include <QResizeEvent> +#include <QSize> +#include <QTimerEvent> +#include <QWidget> +#include <Qt> +#include <QtGlobal> +#include <X11/X.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) +# include <QX11Info> +#else +# include <QGuiApplication> +#endif +SUIL_RESTORE_WARNINGS + +// IWYU pragma: no_include <qguiapplication_platform.h> + +#include <cstdlib> + +#undef signals + +namespace { + +inline Display* +getX11Display() +{ +#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) + return QX11Info::display(); +#else + return qApp->nativeInterface<QNativeInterface::QX11Application>()->display(); +#endif +} + +class SuilQX11Widget : public QWidget +{ +public: + SuilQX11Widget(QWidget* parent, Qt::WindowFlags wflags) + : QWidget(parent, wflags) + {} + + SuilQX11Widget(const SuilQX11Widget&) = delete; + SuilQX11Widget& operator=(const SuilQX11Widget&) = delete; + + SuilQX11Widget(SuilQX11Widget&&) = delete; + SuilQX11Widget& operator=(SuilQX11Widget&&) = delete; + + ~SuilQX11Widget() override; + + void start_idle(SuilInstance* instance, + const LV2UI_Idle_Interface* idle_iface) + { + _instance = instance; + _idle_iface = idle_iface; + if (_idle_iface && _ui_timer == 0) { + _ui_timer = this->startTimer(30, Qt::CoarseTimer); + } + } + + void set_window(Window window) { _window = window; } + + QSize sizeHint() const override + { + if (_window) { + XWindowAttributes attrs{}; + XGetWindowAttributes(getX11Display(), _window, &attrs); + return {attrs.width, attrs.height}; + } + + return {0, 0}; + } + + QSize minimumSizeHint() const override + { + if (_window) { + XSizeHints hints{}; + long supplied{}; + XGetWMNormalHints(getX11Display(), _window, &hints, &supplied); + if ((hints.flags & PMinSize)) { + return {hints.min_width, hints.min_height}; + } + } + + return {0, 0}; + } + +protected: + void resizeEvent(QResizeEvent* event) override + { + QWidget::resizeEvent(event); + + if (_window) { + XResizeWindow(getX11Display(), + _window, + static_cast<unsigned>(event->size().width()), + static_cast<unsigned>(event->size().height())); + } + } + + void timerEvent(QTimerEvent* event) override + { + if (event->timerId() == _ui_timer && _idle_iface) { + _idle_iface->idle(_instance->handle); + } + + QWidget::timerEvent(event); + } + + void closeEvent(QCloseEvent* event) override + { + if (_ui_timer && _idle_iface) { + this->killTimer(_ui_timer); + _ui_timer = 0; + } + + QWidget::closeEvent(event); + } + +private: + SuilInstance* _instance{}; + const LV2UI_Idle_Interface* _idle_iface{}; + Window _window{}; + int _ui_timer{}; +}; + +SuilQX11Widget::~SuilQX11Widget() = default; + +struct SuilX11InQt5Wrapper { + QWidget* host_widget; + SuilQX11Widget* parent; +}; + +void +wrapper_free(SuilWrapper* wrapper) +{ + auto* impl = static_cast<SuilX11InQt5Wrapper*>(wrapper->impl); + + delete impl->host_widget; + + free(impl); +} + +int +wrapper_wrap(SuilWrapper* wrapper, SuilInstance* instance) +{ + auto* const impl = static_cast<SuilX11InQt5Wrapper*>(wrapper->impl); + + SuilQX11Widget* const ew = impl->parent; + Display* const display = getX11Display(); + const auto window = reinterpret_cast<Window>(instance->ui_widget); + + XWindowAttributes attrs{}; + XSizeHints hints{}; + long supplied{}; + XSync(display, False); + XGetWindowAttributes(display, window, &attrs); + XGetWMNormalHints(display, window, &hints, &supplied); + + impl->parent->set_window(window); + + if ((hints.flags & PBaseSize)) { + impl->parent->setBaseSize(hints.base_width, hints.base_height); + } + + if ((hints.flags & PMinSize)) { + impl->parent->setMinimumSize(hints.min_width, hints.min_height); + } + + if ((hints.flags & PMaxSize)) { + impl->parent->setMaximumSize(hints.max_width, hints.max_height); + } + + if (instance->descriptor->extension_data) { + const auto* idle_iface = static_cast<const LV2UI_Idle_Interface*>( + instance->descriptor->extension_data(LV2_UI__idleInterface)); + + ew->start_idle(instance, idle_iface); + } + + impl->host_widget = ew; + instance->host_widget = impl->host_widget; + + return 0; +} + +int +wrapper_resize(LV2UI_Feature_Handle handle, int width, int height) +{ + auto* const ew = static_cast<QWidget*>(handle); + ew->resize(width, height); + return 0; +} + +} // namespace + +extern "C" { + +SUIL_LIB_EXPORT +SuilWrapper* +suil_wrapper_new(SuilHost*, + const char*, + const char*, + LV2_Feature*** features, + unsigned n_features) +{ + auto* const impl = + static_cast<SuilX11InQt5Wrapper*>(calloc(1, sizeof(SuilX11InQt5Wrapper))); + + auto* wrapper = static_cast<SuilWrapper*>(malloc(sizeof(SuilWrapper))); + wrapper->wrap = wrapper_wrap; + wrapper->free = wrapper_free; + + auto* const ew = new SuilQX11Widget(nullptr, Qt::Window); + + impl->parent = ew; + + wrapper->impl = impl; + wrapper->resize.handle = ew; + wrapper->resize.ui_resize = wrapper_resize; + + void* parent_id = reinterpret_cast<void*>(ew->winId()); + suil_add_feature(features, &n_features, LV2_UI__parent, parent_id); + suil_add_feature(features, &n_features, LV2_UI__resize, &wrapper->resize); + suil_add_feature(features, &n_features, LV2_UI__idleInterface, nullptr); + + return wrapper; +} + +} // extern "C" |