From da0c0a4a33fdf4494e87e47c62faf4764864f285 Mon Sep 17 00:00:00 2001 From: David Ludwig Date: Thu, 28 Nov 2013 21:15:05 -0500 Subject: [PATCH] WinRT: fixed bug: touch input coordinates weren't normalized [0..1] Thanks to Pierre-Yves for pointing this out and providing a fix! --- src/core/winrt/SDL_winrtapp_direct3d.cpp | 8 +-- src/video/winrt/SDL_winrtevents_c.h | 8 ++- src/video/winrt/SDL_winrtpointerinput.cpp | 71 ++++++++++++++--------- 3 files changed, 56 insertions(+), 31 deletions(-) diff --git a/src/core/winrt/SDL_winrtapp_direct3d.cpp b/src/core/winrt/SDL_winrtapp_direct3d.cpp index a5027fa4e..05a748727 100644 --- a/src/core/winrt/SDL_winrtapp_direct3d.cpp +++ b/src/core/winrt/SDL_winrtapp_direct3d.cpp @@ -495,7 +495,7 @@ WINRT_LogPointerEvent(const char * header, Windows::UI::Core::PointerEventArgs ^ void SDL_WinRTApp::OnPointerPressed(CoreWindow^ sender, PointerEventArgs^ args) { #if LOG_POINTER_EVENTS - WINRT_LogPointerEvent("pointer pressed", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position)); + WINRT_LogPointerEvent("pointer pressed", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position, TransformToSDLWindowSize)); #endif WINRT_ProcessPointerPressedEvent(WINRT_GlobalSDLWindow, args->CurrentPoint); @@ -504,7 +504,7 @@ void SDL_WinRTApp::OnPointerPressed(CoreWindow^ sender, PointerEventArgs^ args) void SDL_WinRTApp::OnPointerMoved(CoreWindow^ sender, PointerEventArgs^ args) { #if LOG_POINTER_EVENTS - WINRT_LogPointerEvent("pointer moved", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position)); + WINRT_LogPointerEvent("pointer moved", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position, TransformToSDLWindowSize)); #endif WINRT_ProcessPointerMovedEvent(WINRT_GlobalSDLWindow, args->CurrentPoint); @@ -513,7 +513,7 @@ void SDL_WinRTApp::OnPointerMoved(CoreWindow^ sender, PointerEventArgs^ args) void SDL_WinRTApp::OnPointerReleased(CoreWindow^ sender, PointerEventArgs^ args) { #if LOG_POINTER_EVENTS - WINRT_LogPointerEvent("pointer released", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position)); + WINRT_LogPointerEvent("pointer released", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position, TransformToSDLWindowSize)); #endif WINRT_ProcessPointerReleasedEvent(WINRT_GlobalSDLWindow, args->CurrentPoint); @@ -522,7 +522,7 @@ void SDL_WinRTApp::OnPointerReleased(CoreWindow^ sender, PointerEventArgs^ args) void SDL_WinRTApp::OnPointerWheelChanged(CoreWindow^ sender, PointerEventArgs^ args) { #if LOG_POINTER_EVENTS - WINRT_LogPointerEvent("pointer wheel changed", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position)); + WINRT_LogPointerEvent("pointer wheel changed", args, WINRT_TransformCursorPosition(WINRT_GlobalSDLWindow, args->CurrentPoint->Position, TransformToSDLWindowSize)); #endif WINRT_ProcessPointerWheelChangedEvent(WINRT_GlobalSDLWindow, args->CurrentPoint); diff --git a/src/video/winrt/SDL_winrtevents_c.h b/src/video/winrt/SDL_winrtevents_c.h index ea09347ae..a6ae7a2c6 100644 --- a/src/video/winrt/SDL_winrtevents_c.h +++ b/src/video/winrt/SDL_winrtevents_c.h @@ -46,7 +46,13 @@ extern void WINRT_PumpEvents(_THIS); #ifdef __cplusplus_winrt /* Pointers (Mice, Touch, etc.) */ -extern Windows::Foundation::Point WINRT_TransformCursorPosition(SDL_Window * window, Windows::Foundation::Point rawPosition); +typedef enum { + NormalizeZeroToOne, + TransformToSDLWindowSize +} WINRT_CursorNormalizationType; +extern Windows::Foundation::Point WINRT_TransformCursorPosition(SDL_Window * window, + Windows::Foundation::Point rawPosition, + WINRT_CursorNormalizationType normalization); extern Uint8 WINRT_GetSDLButtonForPointerPoint(Windows::UI::Input::PointerPoint ^pt); extern void WINRT_ProcessPointerPressedEvent(SDL_Window *window, Windows::UI::Input::PointerPoint ^pointerPoint); extern void WINRT_ProcessPointerMovedEvent(SDL_Window *window, Windows::UI::Input::PointerPoint ^pointerPoint); diff --git a/src/video/winrt/SDL_winrtpointerinput.cpp b/src/video/winrt/SDL_winrtpointerinput.cpp index 9e64138a5..bb1a771f9 100644 --- a/src/video/winrt/SDL_winrtpointerinput.cpp +++ b/src/video/winrt/SDL_winrtpointerinput.cpp @@ -47,9 +47,14 @@ WINRT_InitTouch(_THIS) SDL_AddTouch(WINRT_TouchID, ""); } + +// // Applies necessary geometric transformations to raw cursor positions: +// Windows::Foundation::Point -WINRT_TransformCursorPosition(SDL_Window * window, Windows::Foundation::Point rawPosition) +WINRT_TransformCursorPosition(SDL_Window * window, + Windows::Foundation::Point rawPosition, + WINRT_CursorNormalizationType normalization) { using namespace Windows::UI::Core; using namespace Windows::Graphics::Display; @@ -64,6 +69,8 @@ WINRT_TransformCursorPosition(SDL_Window * window, Windows::Foundation::Point ra // This might end up being the case as XAML support is extended. // For now, if there's no CoreWindow attached to the SDL_Window, // don't do any transforms. + + // TODO, WinRT: make sure touch input coordinate ranges are correct when using XAML support return rawPosition; } @@ -73,33 +80,41 @@ WINRT_TransformCursorPosition(SDL_Window * window, Windows::Foundation::Point ra CoreWindow ^ nativeWindow = windowData->coreWindow.Get(); Windows::Foundation::Point outputPosition; + // Compute coordinates normalized from 0..1. + // If the coordinates need to be sized to the SDL window, + // we'll do that after. #if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP - outputPosition.X = rawPosition.X * (((float32)window->w) / nativeWindow->Bounds.Width); - outputPosition.Y = rawPosition.Y * (((float32)window->h) / nativeWindow->Bounds.Height); + outputPosition.X = rawPosition.X / nativeWindow->Bounds.Width; + outputPosition.Y = rawPosition.Y / nativeWindow->Bounds.Height; #else switch (DisplayProperties::CurrentOrientation) { case DisplayOrientations::Portrait: - outputPosition.X = rawPosition.X * (((float32)window->w) / nativeWindow->Bounds.Width); - outputPosition.Y = rawPosition.Y * (((float32)window->h) / nativeWindow->Bounds.Height); + outputPosition.X = rawPosition.X / nativeWindow->Bounds.Width; + outputPosition.Y = rawPosition.Y / nativeWindow->Bounds.Height; break; case DisplayOrientations::PortraitFlipped: - outputPosition.X = (float32)window->w - rawPosition.X * (((float32)window->w) / nativeWindow->Bounds.Width); - outputPosition.Y = (float32)window->h - rawPosition.Y * (((float32)window->h) / nativeWindow->Bounds.Height); + outputPosition.X = 1.0f - (rawPosition.X / nativeWindow->Bounds.Width); + outputPosition.Y = 1.0f - (rawPosition.Y / nativeWindow->Bounds.Height); break; case DisplayOrientations::Landscape: - outputPosition.X = rawPosition.Y * (((float32)window->w) / nativeWindow->Bounds.Height); - outputPosition.Y = (float32)window->h - rawPosition.X * (((float32)window->h) / nativeWindow->Bounds.Width); + outputPosition.X = rawPosition.Y / nativeWindow->Bounds.Height; + outputPosition.Y = 1.0f - (rawPosition.X / nativeWindow->Bounds.Width); break; case DisplayOrientations::LandscapeFlipped: - outputPosition.X = (float32)window->w - rawPosition.Y * (((float32)window->w) / nativeWindow->Bounds.Height); - outputPosition.Y = rawPosition.X * (((float32)window->h) / nativeWindow->Bounds.Width); + outputPosition.X = 1.0f - (rawPosition.Y / nativeWindow->Bounds.Height); + outputPosition.Y = rawPosition.X / nativeWindow->Bounds.Width; break; default: break; } #endif + if (normalization == TransformToSDLWindowSize) { + outputPosition.X *= ((float32) window->w); + outputPosition.Y *= ((float32) window->h); + } + return outputPosition; } @@ -208,15 +223,17 @@ void WINRT_ProcessPointerPressedEvent(SDL_Window *window, Windows::UI::Input::Po return; } - Windows::Foundation::Point transformedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position); Uint8 button = WINRT_GetSDLButtonForPointerPoint(pointerPoint); - if (!WINRT_IsTouchEvent(pointerPoint)) { + if ( ! WINRT_IsTouchEvent(pointerPoint)) { SDL_SendMouseButton(window, 0, SDL_PRESSED, button); } else { + Windows::Foundation::Point normalizedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position, NormalizeZeroToOne); + Windows::Foundation::Point windowPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position, TransformToSDLWindowSize); + if (!WINRT_LeftFingerDown) { if (button) { - SDL_SendMouseMotion(window, 0, 0, (int)transformedPoint.X, (int)transformedPoint.Y); + SDL_SendMouseMotion(window, 0, 0, (int)windowPoint.X, (int)windowPoint.Y); SDL_SendMouseButton(window, 0, SDL_PRESSED, button); } @@ -227,8 +244,8 @@ void WINRT_ProcessPointerPressedEvent(SDL_Window *window, Windows::UI::Input::Po WINRT_TouchID, (SDL_FingerID) pointerPoint->PointerId, SDL_TRUE, - transformedPoint.X, - transformedPoint.Y, + normalizedPoint.X, + normalizedPoint.Y, pointerPoint->Properties->Pressure); } } @@ -240,20 +257,21 @@ WINRT_ProcessPointerMovedEvent(SDL_Window *window, Windows::UI::Input::PointerPo return; } - Windows::Foundation::Point transformedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position); + Windows::Foundation::Point normalizedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position, NormalizeZeroToOne); + Windows::Foundation::Point windowPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position, TransformToSDLWindowSize); - if (!WINRT_IsTouchEvent(pointerPoint)) { - SDL_SendMouseMotion(window, 0, 0, (int)transformedPoint.X, (int)transformedPoint.Y); + if ( ! WINRT_IsTouchEvent(pointerPoint)) { + SDL_SendMouseMotion(window, 0, 0, (int)windowPoint.X, (int)windowPoint.Y); } else if (pointerPoint->PointerId == WINRT_LeftFingerDown) { if (pointerPoint->PointerId == WINRT_LeftFingerDown) { - SDL_SendMouseMotion(window, 0, 0, (int)transformedPoint.X, (int)transformedPoint.Y); + SDL_SendMouseMotion(window, 0, 0, (int)windowPoint.X, (int)windowPoint.Y); } SDL_SendTouchMotion( WINRT_TouchID, (SDL_FingerID) pointerPoint->PointerId, - transformedPoint.X, - transformedPoint.Y, + normalizedPoint.X, + normalizedPoint.Y, pointerPoint->Properties->Pressure); } } @@ -264,12 +282,13 @@ void WINRT_ProcessPointerReleasedEvent(SDL_Window *window, Windows::UI::Input::P return; } - Windows::Foundation::Point transformedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position); Uint8 button = WINRT_GetSDLButtonForPointerPoint(pointerPoint); if (!WINRT_IsTouchEvent(pointerPoint)) { SDL_SendMouseButton(window, 0, SDL_RELEASED, button); } else { + Windows::Foundation::Point normalizedPoint = WINRT_TransformCursorPosition(window, pointerPoint->Position, NormalizeZeroToOne); + if (WINRT_LeftFingerDown == pointerPoint->PointerId) { if (button) { SDL_SendMouseButton(window, 0, SDL_RELEASED, button); @@ -281,8 +300,8 @@ void WINRT_ProcessPointerReleasedEvent(SDL_Window *window, Windows::UI::Input::P WINRT_TouchID, (SDL_FingerID) pointerPoint->PointerId, SDL_FALSE, - transformedPoint.X, - transformedPoint.Y, + normalizedPoint.X, + normalizedPoint.Y, pointerPoint->Properties->Pressure); } } @@ -363,7 +382,7 @@ WINRT_ProcessMouseMovedEvent(SDL_Window * window, Windows::Devices::Input::Mouse // to SDL window coordinates. // const Windows::Foundation::Point mouseDeltaInDIPs((float)args->MouseDelta.X, (float)args->MouseDelta.Y); - const Windows::Foundation::Point mouseDeltaInSDLWindowCoords = WINRT_TransformCursorPosition(window, mouseDeltaInDIPs); + const Windows::Foundation::Point mouseDeltaInSDLWindowCoords = WINRT_TransformCursorPosition(window, mouseDeltaInDIPs, TransformToSDLWindowSize); SDL_SendMouseMotion( window, 0,