WIP: Add support for per-monitor DPI awareness

Externals/crystaledit/Sample/ChildFrm.cpp

@@ -5,6 +5,7 @@
 #include "Sample.h"
 
 #include "ChildFrm.h"
+#include "MainFrm.h"
 
 #ifdef _DEBUG
 #define new DEBUG_NEW
@@ -15,10 +16,11 @@ static char THIS_FILE[] = __FILE__;
 /////////////////////////////////////////////////////////////////////////////
 // CChildFrame
 
-IMPLEMENT_DYNCREATE(CChildFrame, CMDIChildWnd)
+IMPLEMENT_DYNCREATE(CChildFrame, DpiAware::CDpiAwareWnd<CMDIChildWnd>)
 
-BEGIN_MESSAGE_MAP(CChildFrame, CMDIChildWnd)
+BEGIN_MESSAGE_MAP(CChildFrame, DpiAware::CDpiAwareWnd<CMDIChildWnd>)
 	//{{AFX_MSG_MAP(CChildFrame)
+	ON_WM_SIZE()
 		// NOTE - the ClassWizard will add and remove mapping macros here.
 		//    DO NOT EDIT what you see in these blocks of generated code !
 	//}}AFX_MSG_MAP
@@ -41,8 +43,25 @@ BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
 {
 	// TODO: Modify the Window class or styles here by modifying
 	//  the CREATESTRUCT cs
-
-	return CMDIChildWnd::PreCreateWindow(cs);
+	CMainFrame* pMainFrame = static_cast<CMainFrame*>(AfxGetMainWnd());
+	MDITileLayout::LayoutManager& layoutManager = pMainFrame->GetLayoutManager();
+	if (!layoutManager.GetTileLayoutEnabled())
+		return __super::PreCreateWindow(cs);
+	__super::PreCreateWindow(cs);
+	cs.style &= ~WS_CAPTION;
+	CRect rcMain;
+	::GetWindowRect(pMainFrame->m_hWndMDIClient, rcMain);
+	CRect rc = layoutManager.GetDefaultOpenPaneRect();
+	rc.left -= rcMain.left;
+	rc.top -= rcMain.top;
+	rc.right -= rcMain.left;
+	rc.bottom -= rcMain.top;
+	AdjustWindowRectEx(rc, cs.style, false, cs.dwExStyle);
+	cs.x = rc.left;
+	cs.y = rc.top;
+	cs.cx = rc.Width();
+	cs.cy = rc.Height();
+	return true;
 }
 
 /////////////////////////////////////////////////////////////////////////////
@@ -51,12 +70,12 @@ BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
 #ifdef _DEBUG
 void CChildFrame::AssertValid() const
 {
-	CMDIChildWnd::AssertValid();
+	__super::AssertValid();
 }
 
 void CChildFrame::Dump(CDumpContext& dc) const
 {
-	CMDIChildWnd::Dump(dc);
+	__super::Dump(dc);
 }
 
 #endif //_DEBUG
@@ -66,5 +85,28 @@ void CChildFrame::Dump(CDumpContext& dc) const
 
 BOOL CChildFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext) 
 {
+	static_cast<CMainFrame*>(AfxGetMainWnd())->GetLayoutManager().NotifyChildOpened(this);
 	return m_wndSplitter.Create(this, 2, 2, CSize(30, 30), pContext);
 }
+
+BOOL CChildFrame::DestroyWindow()
+{
+	static_cast<CMainFrame*>(AfxGetMainWnd())->GetLayoutManager().NotifyChildClosed(this);
+	return __super::DestroyWindow();
+}
+
+void CChildFrame::OnSize(UINT nType, int cx, int cy)
+{
+	__super::OnSize(nType, cx, cy);
+	if (nType == SIZE_MAXIMIZED && IsDifferentDpiFromSystemDpi())
+	{
+		// This is a workaround of the problem that the maximized MDI child window is in the wrong position when the DPI changes
+		// I don't think MDI-related processing inside Windows fully supports per-monitor dpi awareness
+		CRect rc;
+		GetParent()->GetClientRect(rc);
+		AdjustWindowRectEx(&rc, GetStyle(), FALSE, GetExStyle());
+		SetWindowPos(nullptr, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, SWP_NOZORDER | SWP_NOACTIVATE);
+	}
+	static_cast<CMainFrame*>(AfxGetMainWnd())->GetLayoutManager().NotifyChildResized(this);
+}
+

Externals/crystaledit/Sample/ChildFrm.h

@@ -4,7 +4,9 @@
 
 #pragma once
 
-class CChildFrame : public CMDIChildWnd
+#include "utils/DpiAware.h"
+
+class CChildFrame : public DpiAware::CDpiAwareWnd<CMDIChildWnd>
 {
 	DECLARE_DYNCREATE(CChildFrame)
 public:
@@ -24,6 +26,7 @@ class CChildFrame : public CMDIChildWnd
 	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
 	protected:
 	virtual BOOL OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext);
+    virtual BOOL DestroyWindow();
 	//}}AFX_VIRTUAL
 
 // Implementation
@@ -40,6 +43,7 @@ class CChildFrame : public CMDIChildWnd
 		// NOTE - the ClassWizard will add and remove member functions here.
 		//    DO NOT EDIT what you see in these blocks of generated code!
 	//}}AFX_MSG
+    afx_msg void OnSize(UINT nType, int cx, int cy);
 	DECLARE_MESSAGE_MAP()
 };
 

Externals/crystaledit/Sample/MainFrm.cpp

@@ -17,13 +17,22 @@ static char THIS_FILE[] = __FILE__;
 /////////////////////////////////////////////////////////////////////////////
 // CMainFrame
 
-IMPLEMENT_DYNAMIC(CMainFrame, CMDIFrameWnd)
+IMPLEMENT_DYNAMIC(CMainFrame, DpiAware::CDpiAwareWnd<CMDIFrameWnd>)
 
-BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd)
+BEGIN_MESSAGE_MAP(CMainFrame, DpiAware::CDpiAwareWnd<CMDIFrameWnd>)
 	//{{AFX_MSG_MAP(CMainFrame)
 		// NOTE - the ClassWizard will add and remove mapping macros here.
 		//    DO NOT EDIT what you see in these blocks of generated code !
 	ON_WM_CREATE()
+	ON_WM_SIZE()
+	ON_COMMAND_EX(ID_WINDOW_ARRANGE, OnMDIWindowCmd)
+	ON_COMMAND_EX(ID_WINDOW_CASCADE, OnMDIWindowCmd)
+	ON_COMMAND_EX(ID_WINDOW_TILE_HORZ, OnMDIWindowCmd)
+	ON_COMMAND_EX(ID_WINDOW_TILE_VERT, OnMDIWindowCmd)
+	ON_COMMAND_EX(ID_WINDOW_SPLIT_VERTICALLY, OnWindowSplit)
+	ON_COMMAND_EX(ID_WINDOW_SPLIT_HORIZONTALLY, OnWindowSplit)
+	ON_COMMAND(ID_WINDOW_COMBINE, OnWindowCombine)
+	ON_MESSAGE(WM_DPICHANGED, OnDpiChanged)
 	//}}AFX_MSG_MAP
 END_MESSAGE_MAP()
 
@@ -44,7 +53,7 @@ static UINT indicators[] =
 /////////////////////////////////////////////////////////////////////////////
 // CMainFrame construction/destruction
 
-CMainFrame::CMainFrame()
+CMainFrame::CMainFrame() : m_layoutManager(this)
 {
 	// TODO: add member initialization code here
 
@@ -56,7 +65,7 @@ CMainFrame::~CMainFrame()
 
 int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
 {
-	if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)
+	if (__super::OnCreate(lpCreateStruct) == -1)
 		return -1;
 
 	if (!m_wndToolBar.Create(this) ||
@@ -92,16 +101,16 @@ BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
 	// TODO: Modify the Window class or styles here by modifying
 	//  the CREATESTRUCT cs
 
-	return CMDIFrameWnd::PreCreateWindow(cs);
+	return __super::PreCreateWindow(cs);
 }
 
 BOOL CMainFrame::LoadToolBar()
 {
 	const int ICON_COUNT = 17;
 	m_wndToolBar.LoadToolBar(IDR_MAINFRAME);
 	CToolBarCtrl& toolbarCtrl = m_wndToolBar.GetToolBarCtrl();
-	const int cx = MulDiv(16, GetSystemMetrics(SM_CXSMICON), 16);
-	const int cy = MulDiv(15, GetSystemMetrics(SM_CYSMICON), 16);
+	const int cx = MulDiv(16, m_dpi, USER_DEFAULT_SCREEN_DPI);
+	const int cy = MulDiv(15, m_dpi, USER_DEFAULT_SCREEN_DPI);
 	m_imgListToolBar.Detach();
 	m_imgListToolBar.Create(cx, cy, ILC_COLOR32, ICON_COUNT, 0);
 	CBitmap bm;
@@ -119,15 +128,66 @@ BOOL CMainFrame::LoadToolBar()
 #ifdef _DEBUG
 void CMainFrame::AssertValid() const
 {
-	CMDIFrameWnd::AssertValid();
+	__super::AssertValid();
 }
 
 void CMainFrame::Dump(CDumpContext& dc) const
 {
-	CMDIFrameWnd::Dump(dc);
+	__super::Dump(dc);
 }
 
 #endif //_DEBUG
 
 /////////////////////////////////////////////////////////////////////////////
 // CMainFrame message handlers
+
+BOOL CMainFrame::OnMDIWindowCmd(UINT nID)
+{
+	switch (nID)
+	{
+	case ID_WINDOW_TILE_HORZ:
+	case ID_WINDOW_TILE_VERT:
+	{
+		bool bHorizontal = (nID == ID_WINDOW_TILE_HORZ);
+		m_layoutManager.SetTileLayoutEnabled(true);
+		m_layoutManager.Tile(bHorizontal);
+		break;
+	}
+	case ID_WINDOW_CASCADE:
+		m_layoutManager.SetTileLayoutEnabled(false);
+		__super::OnMDIWindowCmd(nID);
+		break;
+	}
+	return 0;
+}
+
+BOOL CMainFrame::OnWindowSplit(UINT nID)
+{
+	m_layoutManager.SplitActivePane(nID == ID_WINDOW_SPLIT_HORIZONTALLY, 0.5);
+	return 0;
+}
+
+void CMainFrame::OnWindowCombine()
+{
+	m_layoutManager.CombineActivePane();
+}
+
+void CMainFrame::OnSize(UINT nType, int cx, int cy)
+{
+	__super::OnSize(nType, cx, cy);
+	m_layoutManager.NotifyMainResized();
+}
+
+LRESULT CMainFrame::OnDpiChanged(WPARAM wParam, LPARAM lParam)
+{
+	__super::OnDpiChanged(wParam, lParam);
+	DpiAware::UpdateAfxDataSysMetrics(GetDpi());
+	LoadToolBar();
+	const RECT* pRect = reinterpret_cast<RECT *>(lParam);
+	SetWindowPos(nullptr, pRect->left, pRect->top,
+		pRect->right - pRect->left,
+		pRect->bottom - pRect->top, SWP_NOZORDER | SWP_NOACTIVATE);
+	Default();
+	return 0;
+}
+

Externals/crystaledit/Sample/MainFrm.h

@@ -4,7 +4,10 @@
 
 #pragma once
 
-class CMainFrame : public CMDIFrameWnd
+#include "utils/DpiAware.h"
+#include "utils/MDITileLayout.h"
+
+class CMainFrame : public DpiAware::CDpiAwareWnd<CMDIFrameWnd>
 {
 	DECLARE_DYNAMIC(CMainFrame)
 public:
@@ -30,19 +33,27 @@ class CMainFrame : public CMDIFrameWnd
 	virtual void Dump(CDumpContext& dc) const;
 #endif
 	BOOL LoadToolBar();
+	MDITileLayout::LayoutManager& GetLayoutManager() { return m_layoutManager; };
 
 protected:  // control bar embedded members
 	CStatusBar  m_wndStatusBar;
 	CToolBar    m_wndToolBar;
 	CImageList  m_imgListToolBar;
+	CSplitterWnd m_wndSplitter;
+	MDITileLayout::LayoutManager m_layoutManager;
 
 // Generated message map functions
 protected:
 	//{{AFX_MSG(CMainFrame)
 	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
 		// NOTE - the ClassWizard will add and remove member functions here.
 		//    DO NOT EDIT what you see in these blocks of generated code!
+	afx_msg BOOL OnMDIWindowCmd(UINT nID);
+	afx_msg BOOL OnWindowSplit(UINT nID);
+	afx_msg void OnWindowCombine();
+	afx_msg void OnSize(UINT nType, int cx, int cy);
 	//}}AFX_MSG
+	afx_msg LRESULT OnDpiChanged(WPARAM wParam, LPARAM lParam);
 	DECLARE_MESSAGE_MAP()
 };
 

Externals/crystaledit/Sample/Sample.rc

@@ -198,8 +198,12 @@ BEGIN
     BEGIN
         MENUITEM "&New Window",                 ID_WINDOW_NEW
         MENUITEM "&Cascade",                    ID_WINDOW_CASCADE
-        MENUITEM "&Tile",                       ID_WINDOW_TILE_HORZ
+        MENUITEM "Tile &Vertically",            ID_WINDOW_TILE_VERT
+        MENUITEM "Tile &Horizontally",          ID_WINDOW_TILE_HORZ
         MENUITEM "&Arrange Icons",              ID_WINDOW_ARRANGE
+        MENUITEM "Split V&ertically",           ID_WINDOW_SPLIT_VERTICALLY
+        MENUITEM "Split H&orizontally",         ID_WINDOW_SPLIT_HORIZONTALLY
+        MENUITEM "Com&bine",                    ID_WINDOW_COMBINE
     END
     POPUP "&Help"
     BEGIN

Externals/crystaledit/Sample/SampleStatic.manifest

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
+  <asmv3:application>
+    <asmv3:windowsSettings>
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">True</dpiAware>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
+    </asmv3:windowsSettings>
+  </asmv3:application>
+</assembly>
+