21.07

CPP/Windows/Control/Dialog.cpp

@@ -2,6 +2,8 @@
 
 #include "StdAfx.h"
 
+// #include "../../Windows/DLL.h"
+
 #ifndef _UNICODE
 #include "../../Common/StringConvert.h"
 #endif
@@ -88,23 +90,55 @@ bool CDialog::OnButtonClicked(int buttonID, HWND /* buttonHWND */)
   return true;
 }
 
-static bool GetWorkAreaRect(RECT *rect)
+
+static bool GetWorkAreaRect(RECT *rect, HWND hwnd)
 {
-  // use another function for multi-monitor.
+  if (hwnd)
+  {
+    #ifndef UNDER_CE
+    /* MonitorFromWindow() is supported in Win2000+
+       MonitorFromWindow() : retrieves a handle to the display monitor that has the
+         largest area of intersection with the bounding rectangle of a specified window.
+       dwFlags: Determines the function's return value if the window does not intersect any display monitor.
+         MONITOR_DEFAULTTONEAREST : Returns display that is nearest to the window.
+         MONITOR_DEFAULTTONULL    : Returns NULL.
+         MONITOR_DEFAULTTOPRIMARY : Returns the primary display monitor.
+    */
+    const HMONITOR hmon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY);
+    if (hmon)
+    {
+      MONITORINFO mi;
+      memset(&mi, 0, sizeof(mi));
+      mi.cbSize = sizeof(mi);
+      if (GetMonitorInfoA(hmon, &mi))
+      {
+        *rect = mi.rcWork;
+        return true;
+      }
+    }
+    #endif
+  }
+
+  /* Retrieves the size of the work area on the primary display monitor.
+     The work area is the portion of the screen not obscured
+     by the system taskbar or by application desktop toolbars.
+     Any DPI virtualization mode of the caller has no effect on this output. */
+
   return BOOLToBool(::SystemParametersInfo(SPI_GETWORKAREA, 0, rect, 0));
 }
 
-bool IsDialogSizeOK(int xSize, int ySize)
+
+bool IsDialogSizeOK(int xSize, int ySize, HWND hwnd)
 {
   // it returns for system font. Real font uses another values
-  LONG v = GetDialogBaseUnits();
-  int x = LOWORD(v);
-  int y = HIWORD(v);
+  const LONG v = GetDialogBaseUnits();
+  const int x = LOWORD(v);
+  const int y = HIWORD(v);
 
   RECT rect;
-  GetWorkAreaRect(&rect);
-  int wx = RECT_SIZE_X(rect);
-  int wy = RECT_SIZE_Y(rect);
+  GetWorkAreaRect(&rect, hwnd);
+  const int wx = RECT_SIZE_X(rect);
+  const int wy = RECT_SIZE_Y(rect);
   return
     xSize / 4 * x <= wx &&
     ySize / 8 * y <= wy;
@@ -159,47 +193,167 @@ bool CDialog::MoveItem(int id, int x, int y, int width, int height, bool repaint
   return BOOLToBool(::MoveWindow(GetItem(id), x, y, width, height, BoolToBOOL(repaint)));
 }
 
+
+/*
+typedef BOOL (WINAPI * Func_DwmGetWindowAttribute)(
+    HWND hwnd, DWORD dwAttribute, PVOID pvAttribute, DWORD cbAttribute);
+
+static bool GetWindowsRect_DWM(HWND hwnd, RECT *rect)
+{
+  // dll load and free is too slow : 300 calls in second.
+  NDLL::CLibrary dll;
+  if (!dll.Load(FTEXT("dwmapi.dll")))
+    return false;
+  Func_DwmGetWindowAttribute f = (Func_DwmGetWindowAttribute)dll.GetProc("DwmGetWindowAttribute" );
+  if (f)
+  {
+    #define MY__DWMWA_EXTENDED_FRAME_BOUNDS 9
+    // 30000 per second
+    RECT r;
+    if (f(hwnd, MY__DWMWA_EXTENDED_FRAME_BOUNDS, &r, sizeof(RECT)) == S_OK)
+    {
+      *rect = r;
+      return true;
+    }
+  }
+  return false;
+}
+*/
+
+
+static bool IsRect_Small_Inside_Big(const RECT &sm, const RECT &big)
+{
+  return sm.left   >= big.left
+      && sm.right  <= big.right
+      && sm.top    >= big.top
+      && sm.bottom <= big.bottom;
+}
+
+
+static bool AreRectsOverlapped(const RECT &r1, const RECT &r2)
+{
+  return r1.left   < r2.right
+      && r1.right  > r2.left
+      && r1.top    < r2.bottom
+      && r1.bottom > r2.top;
+}
+
+
+static bool AreRectsEqual(const RECT &r1, const RECT &r2)
+{
+  return r1.left   == r2.left
+      && r1.right  == r2.right
+      && r1.top    == r2.top
+      && r1.bottom == r2.bottom;
+}
+
+
 void CDialog::NormalizeSize(bool fullNormalize)
 {
   RECT workRect;
-  GetWorkAreaRect(&workRect);
-  int xSize = RECT_SIZE_X(workRect);
-  int ySize = RECT_SIZE_Y(workRect);
+  if (!GetWorkAreaRect(&workRect, *this))
+    return;
   RECT rect;
-  GetWindowRect(&rect);
-  int xSize2 = RECT_SIZE_X(rect);
-  int ySize2 = RECT_SIZE_Y(rect);
-  bool needMove = (xSize2 > xSize || ySize2 > ySize);
-  if (xSize2 > xSize || (needMove && fullNormalize))
+  if (!GetWindowRect(&rect))
+    return;
+  int xs = RECT_SIZE_X(rect);
+  int ys = RECT_SIZE_Y(rect);
+
+  // we don't want to change size using workRect, if window is outside of WorkArea
+  if (!AreRectsOverlapped(rect, workRect))
+    return;
+
+  /* here rect and workRect are overlapped, but it can be false
+     overlapping of small shadow when window in another display. */
+
+  const int xsW = RECT_SIZE_X(workRect);
+  const int ysW = RECT_SIZE_Y(workRect);
+  if (xs <= xsW && ys <= ysW)
+    return; // size of window is OK
+  if (fullNormalize)
   {
-    rect.left = workRect.left;
-    rect.right = workRect.right;
-    xSize2 = xSize;
-  }
-  if (ySize2 > ySize || (needMove && fullNormalize))
-  {
-    rect.top = workRect.top;
-    rect.bottom = workRect.bottom;
-    ySize2 = ySize;
-  }
-  if (needMove)
-  {
-    if (fullNormalize)
-      Show(SW_SHOWMAXIMIZED);
-    else
-      Move(rect.left, rect.top, xSize2, ySize2, true);
+    Show(SW_SHOWMAXIMIZED);
+    return;
   }
+  int x = workRect.left;
+  int y = workRect.top;
+  if (xs < xsW)  x += (xsW - xs) / 2;  else xs = xsW;
+  if (ys < ysW)  y += (ysW - ys) / 2;  else ys = ysW;
+  Move(x, y, xs, ys, true);
 }
 
+
 void CDialog::NormalizePosition()
 {
-  RECT workRect, rect;
-  GetWorkAreaRect(&workRect);
-  GetWindowRect(&rect);
-  if (rect.bottom > workRect.bottom && rect.top > workRect.top)
-    Move(rect.left, workRect.top, RECT_SIZE_X(rect), RECT_SIZE_Y(rect), true);
+  RECT workRect;
+  if (!GetWorkAreaRect(&workRect, *this))
+    return;
+
+  RECT rect2 = workRect;
+  bool useWorkArea = true;
+  const HWND parentHWND = GetParent();
+
+  if (parentHWND)
+  {
+    RECT workRectParent;
+    if (!GetWorkAreaRect(&workRectParent, parentHWND))
+      return;
+
+    // if windows are in different monitors, we use only workArea of current window
+
+    if (AreRectsEqual(workRectParent, workRect))
+    {
+      // RECT rect3; if (GetWindowsRect_DWM(parentHWND, &rect3)) {}
+      CWindow wnd(parentHWND);
+      if (wnd.GetWindowRect(&rect2))
+      {
+        // it's same monitor. So we try to use parentHWND rect.
+        /* we don't want to change position, if parent window is not inside work area.
+           In Win10 : parent window rect is 8 pixels larger for each corner than window size for shadow.
+           In maximize mode : window is outside of workRect.
+           if parent window is inside workRect, we will use parent window instead of workRect */
+        if (IsRect_Small_Inside_Big(rect2, workRect))
+          useWorkArea = false;
+      }
+    }
+  }
+
+  RECT rect;
+  if (!GetWindowRect(&rect))
+    return;
+
+  if (useWorkArea)
+  {
+    // we don't want to move window, if it's already inside.
+    if (IsRect_Small_Inside_Big(rect, workRect))
+      return;
+    // we don't want to move window, if it's outside of workArea
+    if (!AreRectsOverlapped(rect, workRect))
+      return;
+    rect2 = workRect;
+  }
+
+  {
+    const int xs = RECT_SIZE_X(rect);
+    const int ys = RECT_SIZE_Y(rect);
+    const int xs2 = RECT_SIZE_X(rect2);
+    const int ys2 = RECT_SIZE_Y(rect2);
+    // we don't want to change position if parent is smaller.
+    if (xs <= xs2 && ys <= ys2)
+    {
+      const int x = rect2.left + (xs2 - xs) / 2;
+      const int y = rect2.top  + (ys2 - ys) / 2;
+
+      if (x != rect.left || y != rect.top)
+        Move(x, y, xs, ys, true);
+      // SetWindowPos(*this, HWND_TOP, x, y, 0, 0, SWP_NOSIZE);
+      return;
+    }
+  }
 }
 
+
+
 bool CModelessDialog::Create(LPCTSTR templateName, HWND parentWindow)
 {
   HWND aHWND = CreateDialogParam(g_hInstance, templateName, parentWindow, DialogProcedure, (LPARAM)this);