From ee07fe6b56772d18030afd3e496853a53490fbf4 Mon Sep 17 00:00:00 2001
From: David Ludwig <dludwig@pobox.com>
Date: Sat, 9 Feb 2013 16:00:55 -0500
Subject: [PATCH] WinRT: added SDL_WINDOWEVENT_RESIZED support, and moved
 window-resize-handling code from WinRT rendering code to D3D 11.1 code

---
 src/render/direct3d11/SDL_render_d3d11.cpp | 23 +++++++++++++++-------
 src/video/windowsrt/SDL_WinRTApp.cpp       |  6 +++++-
 src/video/windowsrt/SDL_winrtrenderer.cpp  |  9 ---------
 src/video/windowsrt/SDL_winrtrenderer.h    |  1 -
 4 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/src/render/direct3d11/SDL_render_d3d11.cpp b/src/render/direct3d11/SDL_render_d3d11.cpp
index da45862a9..3ba765769 100644
--- a/src/render/direct3d11/SDL_render_d3d11.cpp
+++ b/src/render/direct3d11/SDL_render_d3d11.cpp
@@ -51,8 +51,8 @@ using namespace Windows::UI::Core;
 /* Direct3D 11.1 renderer implementation */
 
 static SDL_Renderer *D3D11_CreateRenderer(SDL_Window * window, Uint32 flags);
-//static void D3D11_WindowEvent(SDL_Renderer * renderer,
-//                            const SDL_WindowEvent *event);
+static void D3D11_WindowEvent(SDL_Renderer * renderer,
+                            const SDL_WindowEvent *event);
 //static int D3D11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
 //static int D3D11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
 //                             const SDL_Rect * rect, const void *pixels,
@@ -131,9 +131,7 @@ D3D11_CreateRenderer(SDL_Window * window, Uint32 flags)
     data->windowSizeInDIPs = XMFLOAT2(0, 0);
     data->renderTargetSize = XMFLOAT2(0, 0);
 
-    // TODO: Create Direct3D Object(s)
-
-    //renderer->WindowEvent = D3D11_WindowEvent;
+    renderer->WindowEvent = D3D11_WindowEvent;
     //renderer->CreateTexture = D3D11_CreateTexture;
     //renderer->UpdateTexture = D3D11_UpdateTexture;
     //renderer->LockTexture = D3D11_LockTexture;
@@ -402,7 +400,7 @@ D3D11_CreateDeviceResources(SDL_Renderer * renderer)
 
 #ifdef __WINRT__
 
-CoreWindow ^
+static CoreWindow ^
 D3D11_GetCoreWindowFromSDLRenderer(SDL_Renderer * renderer)
 {
     SDL_Window * sdlWindow = renderer->window;
@@ -660,6 +658,7 @@ D3D11_CreateWindowSizeDependentResources(SDL_Renderer * renderer)
     return S_OK;
 }
 
+// This method is called when the window's size changes.
 HRESULT
 D3D11_UpdateForWindowSizeChange(SDL_Renderer * renderer)
 {
@@ -691,7 +690,7 @@ D3D11_HandleDeviceLost(SDL_Renderer * renderer)
     D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;
     HRESULT result = S_OK;
 
-    // Reset these member variables to ensure that UpdateForWindowSizeChange recreates all resources.
+    // Reset these member variables to ensure that D3D11_UpdateForWindowSizeChange recreates all resources.
     data->windowSizeInDIPs.x = 0;
     data->windowSizeInDIPs.y = 0;
     data->swapChain = nullptr;
@@ -711,6 +710,16 @@ D3D11_HandleDeviceLost(SDL_Renderer * renderer)
     return S_OK;
 }
 
+static void
+D3D11_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
+{
+    //D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;
+
+    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+        D3D11_UpdateForWindowSizeChange(renderer);
+    }
+}
+
 static int
 D3D11_UpdateViewport(SDL_Renderer * renderer)
 {
diff --git a/src/video/windowsrt/SDL_WinRTApp.cpp b/src/video/windowsrt/SDL_WinRTApp.cpp
index 493d88195..d9f433163 100644
--- a/src/video/windowsrt/SDL_WinRTApp.cpp
+++ b/src/video/windowsrt/SDL_WinRTApp.cpp
@@ -151,7 +151,11 @@ void SDL_WinRTApp::Uninitialize()
 
 void SDL_WinRTApp::OnWindowSizeChanged(CoreWindow^ sender, WindowSizeChangedEventArgs^ args)
 {
-    m_renderer->UpdateForWindowSizeChange();
+    SDL_SendWindowEvent(
+        m_sdlWindowData->sdlWindow,
+        SDL_WINDOWEVENT_RESIZED,
+        (int) ceil(args->Size.Width),
+        (int) ceil(args->Size.Height));
 }
 
 void SDL_WinRTApp::OnVisibilityChanged(CoreWindow^ sender, VisibilityChangedEventArgs^ args)
diff --git a/src/video/windowsrt/SDL_winrtrenderer.cpp b/src/video/windowsrt/SDL_winrtrenderer.cpp
index ea831ddce..bb89580a8 100644
--- a/src/video/windowsrt/SDL_winrtrenderer.cpp
+++ b/src/video/windowsrt/SDL_winrtrenderer.cpp
@@ -16,9 +16,6 @@ using namespace Windows::UI::Core;
 using namespace Windows::Foundation;
 using namespace Windows::Graphics::Display;
 
-extern CoreWindow ^ D3D11_GetCoreWindowFromSDLRenderer(SDL_Renderer * renderer);
-extern HRESULT D3D11_UpdateForWindowSizeChange(SDL_Renderer * renderer);
-
 // Constructor.
 SDL_winrtrenderer::SDL_winrtrenderer() :
     m_mainTextureHelperSurface(NULL),
@@ -102,12 +99,6 @@ void SDL_winrtrenderer::ResizeMainTexture(int w, int h)
         );
 }
 
-// This method is called in the event handler for the SizeChanged event.
-void SDL_winrtrenderer::UpdateForWindowSizeChange()
-{
-    DX::ThrowIfFailed(D3D11_UpdateForWindowSizeChange(m_sdlRenderer));
-}
-
 void SDL_winrtrenderer::Render(SDL_Surface * surface, SDL_Rect * rects, int numrects)
 {
     const float blackColor[] = { 0.0f, 0.0f, 0.0f, 0.0f };
diff --git a/src/video/windowsrt/SDL_winrtrenderer.h b/src/video/windowsrt/SDL_winrtrenderer.h
index 7d172f8c3..061cdb3a2 100644
--- a/src/video/windowsrt/SDL_winrtrenderer.h
+++ b/src/video/windowsrt/SDL_winrtrenderer.h
@@ -16,7 +16,6 @@ ref class SDL_winrtrenderer
 
 public:
     virtual ~SDL_winrtrenderer();
-    virtual void UpdateForWindowSizeChange();
     virtual void Present();
 
 internal: