From a176c40ba0f913f98e966f11bad557833ae6dc57 Mon Sep 17 00:00:00 2001 From: crupest Date: Fri, 30 Oct 2020 11:25:57 +0800 Subject: ... --- src/ui/WindowHost.cpp | 400 -------------------------------------------------- 1 file changed, 400 deletions(-) delete mode 100644 src/ui/WindowHost.cpp (limited to 'src/ui/WindowHost.cpp') diff --git a/src/ui/WindowHost.cpp b/src/ui/WindowHost.cpp deleted file mode 100644 index b0908e4f..00000000 --- a/src/ui/WindowHost.cpp +++ /dev/null @@ -1,400 +0,0 @@ -#include "cru/ui/WindowHost.hpp" - -#include "RoutedEventDispatch.hpp" -#include "cru/common/Logger.hpp" -#include "cru/platform/graphics/Painter.hpp" -#include "cru/platform/gui/InputMethod.hpp" -#include "cru/platform/gui/UiApplication.hpp" -#include "cru/platform/gui/Window.hpp" -#include "cru/ui/DebugFlags.hpp" -#include "cru/ui/Window.hpp" -#include "cru/ui/render/MeasureRequirement.hpp" -#include "cru/ui/render/RenderObject.hpp" - -#include - -namespace cru::ui { -using platform::gui::INativeWindow; -using platform::gui::IUiApplication; - -namespace event_names { -#ifdef CRU_DEBUG -// clang-format off -#define CRU_DEFINE_EVENT_NAME(name) constexpr const char16_t* name = CRU_MAKE_UNICODE_LITERAL(name); -// clang-format on -#else -#define CRU_DEFINE_EVENT_NAME(name) constexpr const char16_t* name = u""; -#endif - -CRU_DEFINE_EVENT_NAME(LoseFocus) -CRU_DEFINE_EVENT_NAME(GainFocus) -CRU_DEFINE_EVENT_NAME(MouseEnter) -CRU_DEFINE_EVENT_NAME(MouseLeave) -CRU_DEFINE_EVENT_NAME(MouseMove) -CRU_DEFINE_EVENT_NAME(MouseDown) -CRU_DEFINE_EVENT_NAME(MouseUp) -CRU_DEFINE_EVENT_NAME(KeyDown) -CRU_DEFINE_EVENT_NAME(KeyUp) - -#undef CRU_DEFINE_EVENT_NAME -} // namespace event_names - -namespace { -bool IsAncestor(Control* control, Control* ancestor) { - while (control != nullptr) { - if (control == ancestor) return true; - control = control->GetParent(); - } - return false; -} - -// Ancestor at last. -std::vector GetAncestorList(Control* control) { - std::vector l; - while (control != nullptr) { - l.push_back(control); - control = control->GetParent(); - } - return l; -} - -Control* FindLowestCommonAncestor(Control* left, Control* right) { - if (left == nullptr || right == nullptr) return nullptr; - - auto&& left_list = GetAncestorList(left); - auto&& right_list = GetAncestorList(right); - - // the root is different - if (left_list.back() != right_list.back()) return nullptr; - - // find the last same control or the last control (one is ancestor of the - // other) - auto left_iter = left_list.crbegin(); - auto right_iter = right_list.crbegin(); - - while (true) { - if (left_iter == left_list.crend()) { - return left_list.front(); - } - if (right_iter == right_list.crend()) { - return right_list.front(); - } - if (*left_iter != *right_iter) { - return *(--left_iter); - } - ++left_iter; - ++right_iter; - } -} -} // namespace - -namespace { -template -inline void BindNativeEvent( - WindowHost* host, INativeWindow* native_window, IEvent* event, - void (WindowHost::*handler)(INativeWindow*, typename IEvent::EventArgs), - std::vector& guard_pool) { - guard_pool.push_back(EventRevokerGuard(event->AddHandler( - std::bind(handler, host, native_window, std::placeholders::_1)))); -} -} // namespace - -WindowHost::WindowHost(Control* root_control) - : root_control_(root_control), focus_control_(root_control) { - const auto ui_application = IUiApplication::GetInstance(); - auto native_window = ui_application->CreateWindow(nullptr); - native_window_ = native_window; - - root_control_->TraverseDescendants([this](Control* control) { - control->window_host_ = this; - control->OnAttachToHost(this); - }); - - root_render_object_ = root_control->GetRenderObject(); - root_render_object_->SetWindowHostRecursive(this); - - BindNativeEvent(this, native_window, native_window->DestroyEvent(), - &WindowHost::OnNativeDestroy, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->PaintEvent(), - &WindowHost::OnNativePaint, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->ResizeEvent(), - &WindowHost::OnNativeResize, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->FocusEvent(), - &WindowHost::OnNativeFocus, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->MouseEnterLeaveEvent(), - &WindowHost::OnNativeMouseEnterLeave, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->MouseMoveEvent(), - &WindowHost::OnNativeMouseMove, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->MouseDownEvent(), - &WindowHost::OnNativeMouseDown, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->MouseUpEvent(), - &WindowHost::OnNativeMouseUp, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->KeyDownEvent(), - &WindowHost::OnNativeKeyDown, event_revoker_guards_); - BindNativeEvent(this, native_window, native_window->KeyUpEvent(), - &WindowHost::OnNativeKeyUp, event_revoker_guards_); -} - -WindowHost::~WindowHost() { - if (native_window_) { - native_window_->Close(); - } -} - -void WindowHost::InvalidatePaint() { - if (native_window_) native_window_->RequestRepaint(); -} - -void WindowHost::InvalidateLayout() { - need_layout_ = true; - this->InvalidatePaint(); -} - -bool WindowHost::IsLayoutPreferToFillWindow() const { - return layout_prefer_to_fill_window_; -} - -void WindowHost::SetLayoutPreferToFillWindow(bool value) { - if (value == layout_prefer_to_fill_window_) return; - layout_prefer_to_fill_window_ = value; - InvalidateLayout(); -} - -void WindowHost::Relayout() { - const auto available_size = - native_window_ ? native_window_->GetClientSize() - : Size{100, 100}; // a reasonable assumed size - Relayout(available_size); -} - -void WindowHost::Relayout(const Size& available_size) { - root_render_object_->Measure( - render::MeasureRequirement{available_size, - IsLayoutPreferToFillWindow() - ? render::MeasureSize(available_size) - : render::MeasureSize::NotSpecified()}, - render::MeasureSize::NotSpecified()); - root_render_object_->Layout(Point{}); - for (auto& action : after_layout_stable_action_) action(); - after_layout_event_.Raise(AfterLayoutEventArgs{}); - root_render_object_->TraverseDescendants( - [](render::RenderObject* render_object) { - render_object->OnAfterLayout(); - }); - after_layout_stable_action_.clear(); - if constexpr (debug_flags::layout) - log::TagDebug(log_tag, u"A relayout is finished."); -} - -Control* WindowHost::GetFocusControl() { return focus_control_; } - -void WindowHost::SetFocusControl(Control* control) { - if (focus_control_ == control) return; - if (control == nullptr) control = root_control_; - - const auto old_focus_control = focus_control_; - - focus_control_ = control; - - DispatchEvent(event_names::LoseFocus, old_focus_control, - &Control::LoseFocusEvent, nullptr, false); - - DispatchEvent(event_names::GainFocus, control, &Control::GainFocusEvent, - nullptr, false); -} - -bool WindowHost::CaptureMouseFor(Control* control) { - if (!native_window_) return false; - - if (control == mouse_captured_control_) return true; - - if (control == nullptr) { - const auto old_capture_control = mouse_captured_control_; - mouse_captured_control_ = - nullptr; // update this in case this is used in event handlers - if (old_capture_control != mouse_hover_control_) { - DispatchMouseHoverControlChangeEvent( - old_capture_control, mouse_hover_control_, - native_window_->GetMousePosition(), true, false); - } - UpdateCursor(); - return true; - } - - if (mouse_captured_control_) return false; - - mouse_captured_control_ = control; - DispatchMouseHoverControlChangeEvent( - mouse_hover_control_, mouse_captured_control_, - native_window_->GetMousePosition(), false, true); - UpdateCursor(); - return true; -} - -Control* WindowHost::GetMouseCaptureControl() { - return mouse_captured_control_; -} - -void WindowHost::RunAfterLayoutStable(std::function action) { - if (need_layout_) { - after_layout_stable_action_.push_back(std::move(action)); - } else { - action(); - } -} - -void WindowHost::OnNativeDestroy(INativeWindow* window, std::nullptr_t) { - CRU_UNUSED(window) - this->native_window_ = nullptr; -} - -void WindowHost::OnNativePaint(INativeWindow* window, std::nullptr_t) { - if (need_layout_) { - Relayout(); - need_layout_ = false; - } - auto painter = window->BeginPaint(); - painter->Clear(colors::white); - root_render_object_->Draw(painter.get()); - painter->EndDraw(); -} - -void WindowHost::OnNativeResize(INativeWindow* window, const Size& size) { - CRU_UNUSED(window) - CRU_UNUSED(size) - - InvalidateLayout(); -} - -void WindowHost::OnNativeFocus(INativeWindow* window, - platform::gui::FocusChangeType focus) { - CRU_UNUSED(window) - - focus == platform::gui::FocusChangeType::Gain - ? DispatchEvent(event_names::GainFocus, focus_control_, - &Control::GainFocusEvent, nullptr, true) - : DispatchEvent(event_names::LoseFocus, focus_control_, - &Control::LoseFocusEvent, nullptr, true); -} - -void WindowHost::OnNativeMouseEnterLeave( - INativeWindow* window, platform::gui::MouseEnterLeaveType type) { - CRU_UNUSED(window) - - if (type == platform::gui::MouseEnterLeaveType::Leave) { - DispatchEvent(event_names::MouseLeave, mouse_hover_control_, - &Control::MouseLeaveEvent, nullptr); - mouse_hover_control_ = nullptr; - } -} - -void WindowHost::OnNativeMouseMove(INativeWindow* window, const Point& point) { - CRU_UNUSED(window) - - // Find the first control that hit test succeed. - const auto new_mouse_hover_control = HitTest(point); - const auto old_mouse_hover_control = mouse_hover_control_; - mouse_hover_control_ = new_mouse_hover_control; - - if (mouse_captured_control_) { - const auto n = FindLowestCommonAncestor(new_mouse_hover_control, - mouse_captured_control_); - const auto o = FindLowestCommonAncestor(old_mouse_hover_control, - mouse_captured_control_); - bool a = IsAncestor(o, n); - if (a) { - DispatchEvent(event_names::MouseLeave, o, &Control::MouseLeaveEvent, n); - } else { - DispatchEvent(event_names::MouseEnter, n, &Control::MouseEnterEvent, o, - point); - } - DispatchEvent(event_names::MouseMove, mouse_captured_control_, - &Control::MouseMoveEvent, nullptr, point); - UpdateCursor(); - return; - } - - DispatchMouseHoverControlChangeEvent( - old_mouse_hover_control, new_mouse_hover_control, point, false, false); - DispatchEvent(event_names::MouseMove, new_mouse_hover_control, - &Control::MouseMoveEvent, nullptr, point); - UpdateCursor(); -} - -void WindowHost::OnNativeMouseDown( - INativeWindow* window, - const platform::gui::NativeMouseButtonEventArgs& args) { - CRU_UNUSED(window) - - Control* control = - mouse_captured_control_ ? mouse_captured_control_ : HitTest(args.point); - DispatchEvent(event_names::MouseDown, control, &Control::MouseDownEvent, - nullptr, args.point, args.button, args.modifier); -} - -void WindowHost::OnNativeMouseUp( - INativeWindow* window, - const platform::gui::NativeMouseButtonEventArgs& args) { - CRU_UNUSED(window) - - Control* control = - mouse_captured_control_ ? mouse_captured_control_ : HitTest(args.point); - DispatchEvent(event_names::MouseUp, control, &Control::MouseUpEvent, nullptr, - args.point, args.button, args.modifier); -} - -void WindowHost::OnNativeKeyDown( - INativeWindow* window, const platform::gui::NativeKeyEventArgs& args) { - CRU_UNUSED(window) - - DispatchEvent(event_names::KeyDown, focus_control_, &Control::KeyDownEvent, - nullptr, args.key, args.modifier); -} - -void WindowHost::OnNativeKeyUp(INativeWindow* window, - const platform::gui::NativeKeyEventArgs& args) { - CRU_UNUSED(window) - - DispatchEvent(event_names::KeyUp, focus_control_, &Control::KeyUpEvent, - nullptr, args.key, args.modifier); -} - -void WindowHost::DispatchMouseHoverControlChangeEvent(Control* old_control, - Control* new_control, - const Point& point, - bool no_leave, - bool no_enter) { - if (new_control != old_control) // if the mouse-hover-on control changed - { - const auto lowest_common_ancestor = - FindLowestCommonAncestor(old_control, new_control); - if (!no_leave && old_control != nullptr) - DispatchEvent(event_names::MouseLeave, old_control, - &Control::MouseLeaveEvent, - lowest_common_ancestor); // dispatch mouse leave event. - if (!no_enter && new_control != nullptr) { - DispatchEvent(event_names::MouseEnter, new_control, - &Control::MouseEnterEvent, lowest_common_ancestor, - point); // dispatch mouse enter event. - } - } -} - -void WindowHost::UpdateCursor() { - if (native_window_) { - const auto capture = GetMouseCaptureControl(); - native_window_->SetCursor( - (capture ? capture : GetMouseHoverControl())->GetInheritedCursor()); - } -} - -Control* WindowHost::HitTest(const Point& point) { - const auto render_object = root_render_object_->HitTest(point); - if (render_object) { - const auto control = render_object->GetAttachedControl(); - Ensures(control); - return control; - } - return root_control_; -} -} // namespace cru::ui -- cgit v1.2.3