initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/msw/private/tlwgeom.h

@@ -0,0 +1,195 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/msw/private/tlwgeom.h
+// Purpose:     wxMSW-specific wxTLWGeometry class.
+// Author:      Vadim Zeitlin
+// Created:     2018-04-29
+// Copyright:   (c) 2018 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_MSW_PRIVATE_TLWGEOM_H_
+#define _WX_MSW_PRIVATE_TLWGEOM_H_
+
+#include "wx/log.h"
+
+#include "wx/msw/private.h"
+
+// names for MSW-specific options
+#define wxPERSIST_TLW_MAX_X "xmax"
+#define wxPERSIST_TLW_MAX_Y "ymax"
+
+class wxTLWGeometry : public wxTLWGeometryBase
+{
+public:
+    wxTLWGeometry()
+    {
+        wxZeroMemory(m_placement);
+        m_placement.length = sizeof(m_placement);
+    }
+
+    virtual bool Save(const Serializer& ser) const override
+    {
+        // For compatibility with the existing saved positions/sizes, use the
+        // same keys as the generic version (which was previously used under
+        // MSW too).
+
+        // Normal position and size.
+        const RECT& rc = m_placement.rcNormalPosition;
+        if ( !ser.SaveField(wxPERSIST_TLW_X, rc.left) ||
+             !ser.SaveField(wxPERSIST_TLW_Y, rc.top) )
+            return false;
+
+        if ( !ser.SaveField(wxPERSIST_TLW_W, rc.right - rc.left) ||
+             !ser.SaveField(wxPERSIST_TLW_H, rc.bottom - rc.top) )
+            return false;
+
+        // Maximized/minimized state.
+        UINT show = m_placement.showCmd;
+        if ( !ser.SaveField(wxPERSIST_TLW_MAXIMIZED, show == SW_SHOWMAXIMIZED) )
+            return false;
+
+        if ( !ser.SaveField(wxPERSIST_TLW_ICONIZED, show == SW_SHOWMINIMIZED) )
+            return false;
+
+        // Maximized window position.
+        const POINT pt = m_placement.ptMaxPosition;
+        if ( !ser.SaveField(wxPERSIST_TLW_MAX_X, pt.x) ||
+             !ser.SaveField(wxPERSIST_TLW_MAX_Y, pt.y) )
+            return false;
+
+        // We don't currently save the minimized window position, it doesn't
+        // seem useful for anything and is probably just a left over from
+        // Windows 3.1 days, when icons were positioned on the desktop instead
+        // of being located in the taskbar.
+
+        return true;
+    }
+
+    virtual bool Restore(Serializer& ser) override
+    {
+        // Normal position and size.
+        wxRect r;
+        if ( !ser.RestoreField(wxPERSIST_TLW_X, &r.x) ||
+             !ser.RestoreField(wxPERSIST_TLW_Y, &r.y) ||
+             !ser.RestoreField(wxPERSIST_TLW_W, &r.width) ||
+             !ser.RestoreField(wxPERSIST_TLW_H, &r.height) )
+            return false;
+        wxCopyRectToRECT(r, m_placement.rcNormalPosition);
+
+        // Maximized/minimized state.
+        //
+        // Note the special case of SW_MINIMIZE: while GetWindowPlacement()
+        // returns SW_SHOWMINIMIZED when the window is iconized, we restore it
+        // as SW_MINIMIZE as this is what the code in wxTLW checks to determine
+        // whether the window is supposed to be iconized or not.
+        //
+        // Just to confuse matters further, note that SW_MAXIMIZE is exactly
+        // the same thing as SW_SHOWMAXIMIZED.
+        int tmp;
+        UINT& show = m_placement.showCmd;
+        if ( ser.RestoreField(wxPERSIST_TLW_MAXIMIZED, &tmp) && tmp )
+            show = SW_MAXIMIZE;
+        else if ( ser.RestoreField(wxPERSIST_TLW_ICONIZED, &tmp) && tmp )
+            show = SW_MINIMIZE;
+        else
+            show = SW_SHOWNORMAL;
+
+        // Maximized window position.
+        if ( ser.RestoreField(wxPERSIST_TLW_MAX_X, &r.x) &&
+             ser.RestoreField(wxPERSIST_TLW_MAX_Y, &r.y) )
+        {
+            m_placement.ptMaxPosition.x = r.x;
+            m_placement.ptMaxPosition.y = r.y;
+        }
+
+        return true;
+    }
+
+    virtual bool GetFrom(const wxTopLevelWindow* tlw) override
+    {
+        if ( !::GetWindowPlacement(GetHwndOf(tlw), &m_placement) )
+        {
+            wxLogLastError(wxS("GetWindowPlacement"));
+            return false;
+        }
+
+        if (m_placement.showCmd != SW_SHOWMAXIMIZED && m_placement.showCmd != SW_SHOWMINIMIZED)
+        {
+            RECT rcWindow;
+            ::GetWindowRect(tlw->GetHWND(), &rcWindow);
+            // Height and width should be the same unless the user performed
+            // an Aero Snap operation.
+            const RECT rcNormal = m_placement.rcNormalPosition;
+            if ((rcWindow.bottom - rcWindow.top) != (rcNormal.bottom - rcNormal.top) ||
+                (rcWindow.right - rcWindow.left) != (rcNormal.right - rcNormal.left))
+            {
+                WinStruct<MONITORINFO> mi;
+                if (!::GetMonitorInfo(::MonitorFromWindow(tlw->GetHWND(),
+                    MONITOR_DEFAULTTONEAREST), &mi))
+                {
+                    wxLogLastError("GetMonitorInfo");
+                    return false;
+                }
+
+                // If the tray is on the top or the left, then the rectangle needs to
+                // be adjusted to match what ::SetWindowPlacement expects.
+                if (mi.rcMonitor.top < mi.rcWork.top ||
+                    mi.rcMonitor.left < mi.rcWork.left)
+                {
+                    // Negative offset to eliminate the tray width/height.
+                    OffsetRect(&rcWindow, (mi.rcMonitor.left - mi.rcWork.left),
+                         (mi.rcMonitor.top - mi.rcWork.top));
+                }
+
+                ::CopyRect(&m_placement.rcNormalPosition, &rcWindow);
+            }
+        }
+
+        return true;
+    }
+
+    virtual bool ApplyTo(wxTopLevelWindow* tlw) override
+    {
+        // There is a subtlety here: if the window is currently hidden,
+        // restoring its geometry shouldn't show it, so we must use SW_HIDE as
+        // show command, but showing it later should restore it to the correct
+        // state, so we need to remember it in wxTLW itself. And even if it's
+        // currently shown, we still need to update its show command, so that
+        // it matches the real window state after SetWindowPlacement() call.
+        tlw->MSWSetShowCommand(m_placement.showCmd);
+        if ( !tlw->IsShown() )
+        {
+            m_placement.showCmd = SW_HIDE;
+        }
+
+        const wxSize oldDPI = tlw->GetDPI();
+        if ( !::SetWindowPlacement(GetHwndOf(tlw), &m_placement) )
+        {
+            wxLogLastError(wxS("SetWindowPlacement"));
+            return false;
+        }
+
+        // Check if a window DPI hasn't changed, as the result of being placed
+        // on a monitor with a different DPI from the main one because in this
+        // case its size is not restored properly.
+        const wxSize newDPI = tlw->GetDPI();
+        if ( oldDPI != newDPI )
+        {
+            // So try setting the placement again as now it will use the
+            // correct scaling factor, because the window is already on the
+            // correct monitor.
+            if ( !::SetWindowPlacement(GetHwndOf(tlw), &m_placement) )
+            {
+                wxLogLastError(wxS("SetWindowPlacement (2nd time)"));
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+private:
+    WINDOWPLACEMENT m_placement;
+};
+
+#endif // _WX_MSW_PRIVATE_TLWGEOM_H_