diff options
Diffstat (limited to 'src/platform_win/win_native_window.cpp')
| -rw-r--r-- | src/platform_win/win_native_window.cpp | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/src/platform_win/win_native_window.cpp b/src/platform_win/win_native_window.cpp new file mode 100644 index 00000000..74d9466f --- /dev/null +++ b/src/platform_win/win_native_window.cpp @@ -0,0 +1,331 @@ +#include "cru/platform/win/win_native_window.hpp" + +#include "cru/platform/dpi_util.hpp" +#include "cru/platform/win/exception.hpp" +#include "cru/platform/win/win_application.hpp" +#include "cru/platform/win/window_class.hpp" +#include "window_manager.hpp" + +#include <assert.h> +#include <windowsx.h> + +namespace cru::platform::win { +WinNativeWindow::WinNativeWindow(WinApplication* application, + std::shared_ptr<WindowClass> window_class, + DWORD window_style, WinNativeWindow* parent) { + assert(application); // application can't be null. + assert(parent == nullptr || + parent->IsValid()); // Parent window is not valid. + + application_ = application; + parent_window_ = parent; + + const auto window_manager = application->GetWindowManager(); + + hwnd_ = CreateWindowExW( + 0, window_manager->GetGeneralWindowClass()->GetName(), L"", window_style, + CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, + parent == nullptr ? nullptr : parent->GetWindowHandle(), nullptr, + application->GetInstanceHandle(), nullptr); + + if (hwnd_ == nullptr) + throw Win32Error(::GetLastError(), "Failed to create window."); + + window_manager->RegisterWindow(hwnd_, this); +} + +WinNativeWindow::~WinNativeWindow() { + if (IsValid()) { + SetDeleteThisOnDestroy(false); // avoid double delete. + Close(); + } +} + +bool WinNativeWindow::IsValid() { return hwnd_ != nullptr; } + +void WinNativeWindow::SetDeleteThisOnDestroy(bool value) { + delete_this_on_destroy_ = value; +} + +void WinNativeWindow::Close() { + if (IsValid()) DestroyWindow(hwnd_); +} + +bool WinNativeWindow::IsVisible() { + if (IsValid()) return ::IsWindowVisible(hwnd_); + return false; +} + +void WinNativeWindow::SetVisible(bool is_visible) { + if (!IsValid()) return; + is_visible ? ShowWindow(hwnd_, SW_SHOWNORMAL) : ShowWindow(hwnd_, SW_HIDE); +} +ui::Size WinNativeWindow::GetClientSize() { + if (!IsValid()) return ui::Size{}; + + const auto pixel_rect = GetClientRectPixel(); + return ui::Size(PixelToDipX(pixel_rect.right), + PixelToDipY(pixel_rect.bottom)); +} + +void WinNativeWindow::SetClientSize(const ui::Size& size) { + if (IsValid()) { + const auto window_style = + static_cast<DWORD>(GetWindowLongPtr(hwnd_, GWL_STYLE)); + const auto window_ex_style = + static_cast<DWORD>(GetWindowLongPtr(hwnd_, GWL_EXSTYLE)); + + RECT rect; + rect.left = 0; + rect.top = 0; + rect.right = DipToPixelX(size.width); + rect.bottom = DipToPixelY(size.height); + if (!AdjustWindowRectEx(&rect, window_style, FALSE, window_ex_style)) + throw Win32Error(::GetLastError(), + "Failed to invoke AdjustWindowRectEx."); + + if (!SetWindowPos(hwnd_, nullptr, 0, 0, rect.right - rect.left, + rect.bottom - rect.top, SWP_NOZORDER | SWP_NOMOVE)) + throw Win32Error(::GetLastError(), "Failed to invoke SetWindowPos."); + } +} + +ui::Rect WinNativeWindow::GetWindowRect() { + if (!IsValid()) return ui::Rect{}; + + RECT rect; + if (!::GetWindowRect(hwnd_, &rect)) + throw Win32Error(::GetLastError(), "Failed to invoke GetWindowRect."); + + return ui::Rect::FromVertices(PixelToDipX(rect.left), PixelToDipY(rect.top), + PixelToDipX(rect.right), + PixelToDipY(rect.bottom)); +} + +void WinNativeWindow::SetWindowRect(const ui::Rect& rect) { + if (IsValid()) { + if (!SetWindowPos(hwnd_, nullptr, DipToPixelX(rect.left), + DipToPixelY(rect.top), DipToPixelX(rect.GetRight()), + DipToPixelY(rect.GetBottom()), SWP_NOZORDER)) + throw Win32Error(::GetLastError(), "Failed to invoke SetWindowPos."); + } +} + +bool WinNativeWindow::HandleNativeWindowMessage(HWND hwnd, UINT msg, + WPARAM w_param, LPARAM l_param, + LRESULT* result) { + WindowNativeMessageEventArgs args{ + WindowNativeMessage{hwnd, msg, w_param, l_param}}; + native_message_event_.Raise(args); + if (args.IsHandled()) { + *result = args.GetResult(); + return true; + } + + switch (msg) { + case WM_PAINT: + OnPaintInternal(); + *result = 0; + return true; + case WM_ERASEBKGND: + *result = 1; + return true; + case WM_SETFOCUS: + OnSetFocusInternal(); + *result = 0; + return true; + case WM_KILLFOCUS: + OnKillFocusInternal(); + *result = 0; + return true; + case WM_MOUSEMOVE: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseMoveInternal(point); + *result = 0; + return true; + } + case WM_LBUTTONDOWN: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseDownInternal(MouseButton::Left, point); + *result = 0; + return true; + } + case WM_LBUTTONUP: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseUpInternal(MouseButton::Left, point); + *result = 0; + return true; + } + case WM_RBUTTONDOWN: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseDownInternal(MouseButton::Right, point); + *result = 0; + return true; + } + case WM_RBUTTONUP: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseUpInternal(MouseButton::Right, point); + *result = 0; + return true; + } + case WM_MBUTTONDOWN: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseDownInternal(MouseButton::Middle, point); + *result = 0; + return true; + } + case WM_MBUTTONUP: { + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + OnMouseUpInternal(MouseButton::Middle, point); + *result = 0; + return true; + } + case WM_MOUSEWHEEL: + POINT point; + point.x = GET_X_LPARAM(l_param); + point.y = GET_Y_LPARAM(l_param); + ScreenToClient(hwnd, &point); + OnMouseWheelInternal(GET_WHEEL_DELTA_WPARAM(w_param), point); + *result = 0; + return true; + case WM_KEYDOWN: + OnKeyDownInternal(static_cast<int>(w_param)); + *result = 0; + return true; + case WM_KEYUP: + OnKeyUpInternal(static_cast<int>(w_param)); + *result = 0; + return true; + case WM_CHAR: + OnCharInternal(static_cast<wchar_t>(w_param)); + *result = 0; + return true; + case WM_SIZE: + OnResizeInternal(LOWORD(l_param), HIWORD(l_param)); + *result = 0; + return true; + case WM_ACTIVATE: + if (w_param == WA_ACTIVE || w_param == WA_CLICKACTIVE) + OnActivatedInternal(); + else if (w_param == WA_INACTIVE) + OnDeactivatedInternal(); + *result = 0; + return true; + case WM_DESTROY: + OnDestroyInternal(); + *result = 0; + return true; + default: + return false; + } +} + +RECT WinNativeWindow::GetClientRectPixel() { + RECT rect; + if (!GetClientRect(hwnd_, &rect)) + throw Win32Error(::GetLastError(), "Failed to invoke GetClientRect."); + return rect; +} + +void WinNativeWindow::OnDestroyInternal() { + application_->GetWindowManager()->UnregisterWindow(hwnd_); + hwnd_ = nullptr; + if (delete_this_on_destroy_) + application_->InvokeLater([this] { delete this; }); +} + +void WinNativeWindow::OnPaintInternal() { + paint_event_.Raise(); + ValidateRect(hwnd_, nullptr); +} + +void WinNativeWindow::OnResizeInternal(const int new_width, + const int new_height) { + // render_target_->ResizeBuffer(new_width, new_height); + if (!(new_width == 0 && new_height == 0)) + resize_event_.Raise( + ui::Size{PixelToDipX(new_width), PixelToDipY(new_height)}); +} + +void WinNativeWindow::OnSetFocusInternal() { + has_focus_ = true; + focus_event_.Raise(true); +} + +void WinNativeWindow::OnKillFocusInternal() { + has_focus_ = false; + focus_event_.Raise(false); +} + +inline ui::Point PiToDip(const POINT& pi_point) { + return ui::Point(PixelToDipX(pi_point.x), PixelToDipY(pi_point.y)); +} + +void WinNativeWindow::OnMouseMoveInternal(const POINT point) { + // when mouse was previous outside the window + if (!is_mouse_in_) { + // invoke TrackMouseEvent to have WM_MOUSELEAVE sent. + TRACKMOUSEEVENT tme; + tme.cbSize = sizeof tme; + tme.dwFlags = TME_LEAVE; + tme.hwndTrack = hwnd_; + + TrackMouseEvent(&tme); + + is_mouse_in_ = true; + mouse_enter_leave_event_.Raise(true); + } + + const auto dip_point = PiToDip(point); + mouse_move_event_.Raise(dip_point); +} + +void WinNativeWindow::OnMouseLeaveInternal() { + is_mouse_in_ = false; + mouse_enter_leave_event_.Raise(false); +} + +void WinNativeWindow::OnMouseDownInternal(MouseButton button, POINT point) { + const auto dip_point = PiToDip(point); + mouse_down_event_.Raise(button, dip_point); +} + +void WinNativeWindow::OnMouseUpInternal(MouseButton button, POINT point) { + const auto dip_point = PiToDip(point); + mouse_up_event_.Raise(button, dip_point); +} + +void WinNativeWindow::OnMouseWheelInternal(short delta, POINT point) { +} + +void WinNativeWindow::OnKeyDownInternal(int virtual_code) { + key_down_event_.Raise(virtual_code); +} + +void WinNativeWindow::OnKeyUpInternal(int virtual_code) { + key_up_event_.Raise(virtual_code); +} + +void WinNativeWindow::OnCharInternal(wchar_t c) { +} + +void WinNativeWindow::OnActivatedInternal() { +} + +void WinNativeWindow::OnDeactivatedInternal() { +} +} // namespace cru::platform::win |