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Copy pathPyUserWidget.cpp
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392 lines (307 loc) · 9.78 KB
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#include "UnrealEnginePythonPrivatePCH.h"
#include "PyUserWidget.h"
#include "PyNativeWidgetHost.h"
#include "PythonDelegate.h"
#include "Slate/UEPyFGeometry.h"
#include "Slate/UEPyFPaintContext.h"
#include "Widgets/Layout/SBox.h"
#include "UMGStyle.h"
#include "Runtime/UMG/Public/Blueprint/WidgetTree.h"
void UPyUserWidget::NativeConstruct()
{
Super::NativeConstruct();
WidgetTree->ForEachWidget([&](UWidget* Widget) {
if (Widget->IsA<UPyNativeWidgetHost>())
{
PyNativeWidgetHost = Cast<UPyNativeWidgetHost>(Widget);
}
});
if (PythonModule.IsEmpty())
return;
FScopePythonGIL gil;
py_uobject = ue_get_python_uobject(this);
if (!py_uobject) {
unreal_engine_py_log_error();
return;
}
PyObject *py_user_widget_module = PyImport_ImportModule(TCHAR_TO_UTF8(*PythonModule));
if (!py_user_widget_module) {
unreal_engine_py_log_error();
return;
}
#if WITH_EDITOR
// todo implement autoreload with a dictionary of module timestamps
py_user_widget_module = PyImport_ReloadModule(py_user_widget_module);
if (!py_user_widget_module) {
unreal_engine_py_log_error();
return;
}
#endif
if (PythonClass.IsEmpty())
return;
PyObject *py_user_widget_module_dict = PyModule_GetDict(py_user_widget_module);
PyObject *py_user_widget_class = PyDict_GetItemString(py_user_widget_module_dict, TCHAR_TO_UTF8(*PythonClass));
if (!py_user_widget_class) {
UE_LOG(LogPython, Error, TEXT("Unable to find class %s in module %s"), *PythonClass, *PythonModule);
return;
}
py_user_widget_instance = PyObject_CallObject(py_user_widget_class, NULL);
if (!py_user_widget_instance) {
unreal_engine_py_log_error();
return;
}
py_uobject->py_proxy = py_user_widget_instance;
PyObject_SetAttrString(py_user_widget_instance, (char*)"uobject", (PyObject *)py_uobject);
if (PythonTickForceDisabled)
bCanEverTick = false;
if (PythonPaintForceDisabled)
bCanEverPaint = false;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"construct"))
return;
PyObject *bp_ret = PyObject_CallMethod(py_user_widget_instance, (char *)"construct", NULL);
if (!bp_ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(bp_ret);
}
void UPyUserWidget::NativeDestruct()
{
Super::NativeDestruct();
if (!py_user_widget_instance)
return;
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"destruct"))
return;
PyObject *bp_ret = PyObject_CallMethod(py_user_widget_instance, (char *)"destruct", NULL);
if (!bp_ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(bp_ret);
}
// Called every frame
void UPyUserWidget::NativeTick(const FGeometry & MyGeometry, float InDeltaTime)
{
Super::NativeTick(MyGeometry, InDeltaTime);
if (!py_user_widget_instance)
return;
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"tick"))
return;
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"tick", (char *)"Of", py_ue_new_fgeometry(MyGeometry), InDeltaTime);
if (!ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(ret);
}
FReply UPyUserWidget::NativeOnMouseButtonDown(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent)
{
Super::NativeOnMouseButtonDown(InGeometry, InMouseEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_mouse_button_down"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_mouse_button_down", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fpointer_event(InMouseEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
FReply UPyUserWidget::NativeOnMouseButtonUp(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent)
{
Super::NativeOnMouseButtonUp(InGeometry, InMouseEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_mouse_button_up"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_mouse_button_up", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fpointer_event(InMouseEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
FReply UPyUserWidget::NativeOnKeyUp(const FGeometry & InGeometry, const FKeyEvent & InKeyEvent)
{
Super::NativeOnKeyUp(InGeometry, InKeyEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_key_up"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_key_up", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fkey_event(InKeyEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
FReply UPyUserWidget::NativeOnKeyDown(const FGeometry & InGeometry, const FKeyEvent & InKeyEvent)
{
Super::NativeOnKeyDown(InGeometry, InKeyEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_key_down"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_key_down", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fkey_event(InKeyEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
#if WITH_EDITOR
const FText UPyUserWidget::GetPaletteCategory()
{
return NSLOCTEXT("Python", "Python", "Python");
}
#endif
void UPyUserWidget::SetSlateWidget(TSharedRef<SWidget> InContent)
{
if (PyNativeWidgetHost.IsValid())
{
PyNativeWidgetHost->SetContent(InContent);
}
}
void UPyUserWidget::ReleaseSlateResources(bool bReleaseChildren)
{
Super::ReleaseSlateResources(bReleaseChildren);
}
TSharedRef<SWidget> UPyUserWidget::RebuildWidget()
{
return Super::RebuildWidget();
}
FReply UPyUserWidget::NativeOnMouseWheel(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent)
{
Super::NativeOnMouseWheel(InGeometry, InMouseEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_mouse_wheel"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_mouse_wheel", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fpointer_event(InMouseEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
FReply UPyUserWidget::NativeOnMouseMove(const FGeometry & InGeometry, const FPointerEvent & InMouseEvent)
{
Super::NativeOnMouseMove(InGeometry, InMouseEvent);
if (!py_user_widget_instance)
return FReply::Unhandled();
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"on_mouse_move"))
return FReply::Unhandled();
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"on_mouse_move", (char *)"OO", py_ue_new_fgeometry(InGeometry), py_ue_new_fpointer_event(InMouseEvent));
if (!ret) {
unreal_engine_py_log_error();
return FReply::Unhandled();
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return FReply::Handled();
}
Py_DECREF(ret);
return FReply::Unhandled();
}
bool UPyUserWidget::NativeIsInteractable() const
{
if (!py_user_widget_instance)
return false;
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"is_interactable"))
return false;
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"is_interactable", nullptr);
if (!ret) {
unreal_engine_py_log_error();
return false;
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return true;
}
Py_DECREF(ret);
return false;
}
void UPyUserWidget::NativePaint(FPaintContext & InContext) const
{
if (!py_user_widget_instance)
return;
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_user_widget_instance, (char *)"paint"))
return;
PyObject *ret = PyObject_CallMethod(py_user_widget_instance, (char *)"paint", (char *)"O", py_ue_new_fpaint_context(InContext));
if (!ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(ret);
}
UPyUserWidget::UPyUserWidget(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{}
UPyUserWidget::~UPyUserWidget()
{
FScopePythonGIL gil;
Py_XDECREF(py_user_widget_instance);
#if defined(UEPY_MEMORY_DEBUG)
UE_LOG(LogPython, Warning, TEXT("Python UUserWidget %p (mapped to %p) wrapper XDECREF'ed"), this, py_uobject ? py_uobject->py_proxy : nullptr);
#endif
// this could trigger the distruction of the python/uobject mapper
Py_XDECREF(py_uobject);
FUnrealEnginePythonHouseKeeper::Get()->UnregisterPyUObject(this);
}
void UPyUserWidget::CallPythonUserWidgetMethod(FString method_name, FString args)
{
if (!py_user_widget_instance)
return;
FScopePythonGIL gil;
PyObject *ret = nullptr;
if (args.IsEmpty())
{
ret = PyObject_CallMethod(py_user_widget_instance, TCHAR_TO_UTF8(*method_name), NULL);
}
else
{
ret = PyObject_CallMethod(py_user_widget_instance, TCHAR_TO_UTF8(*method_name), (char *)"s", TCHAR_TO_UTF8(*args));
}
if (!ret)
{
unreal_engine_py_log_error();
return;
}
Py_DECREF(ret);
}