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Native window decorations: show window system menu when right-clicking on caption

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This commit is contained in:
Karl Tauber
2021-02-23 01:10:59 +01:00
parent b244f80f81
commit baf4437efc
1 changed files with 90 additions and 3 deletions
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93
flatlaf-native-jna/src/main/java/com/formdev/flatlaf/nativejna/windows/FlatWindowsNativeWindowBorder.java
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@@ -38,8 +38,11 @@ import com.sun.jna.Pointer;
import com.sun.jna.Structure;
import com.sun.jna.Structure.FieldOrder;
import com.sun.jna.platform.win32.BaseTSD;
import com.sun.jna.platform.win32.BaseTSD.ULONG_PTR;
import com.sun.jna.platform.win32.Shell32;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WTypes.LPWSTR;
import com.sun.jna.platform.win32.WinDef.HMENU;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinDef.LPARAM;
import com.sun.jna.platform.win32.WinDef.LRESULT;
@@ -163,6 +166,7 @@ public class FlatWindowsNativeWindowBorder
private static final int WM_NCCALCSIZE = 0x0083;
private static final int WM_NCHITTEST = 0x0084;
private static final int WM_NCRBUTTONUP = 0x00A5;
// WM_NCHITTEST mouse position codes
private static final int
@@ -173,6 +177,21 @@ public class FlatWindowsNativeWindowBorder
private static final int ABS_AUTOHIDE = 0x0000001;
private static final int ABM_GETAUTOHIDEBAREX = 0x0000000b;
private static final int
SC_SIZE = 0xF000,
SC_MOVE = 0xF010,
SC_MINIMIZE = 0xF020,
SC_MAXIMIZE = 0xF030,
SC_CLOSE = 0xF060,
SC_RESTORE = 0xF120;
private static final int
MIIM_STATE = 0x00000001,
MFT_STRING = 0x00000000,
MF_ENABLED = 0x00000000,
MF_DISABLED = 0x00000002,
TPM_RETURNCMD = 0x0100;
private Window window;
private final HWND hwnd;
private final BaseTSD.LONG_PTR defaultWndProc;
@@ -222,12 +241,16 @@ public class FlatWindowsNativeWindowBorder
case WM_NCHITTEST:
return WmNcHitTest( hwnd, uMsg, wParam, lParam );
case WM_NCRBUTTONUP:
if( wParam.longValue() == HTCAPTION )
openSystemMenu( hwnd, GET_X_LPARAM( lParam ), GET_Y_LPARAM( lParam ) );
break;
case WM_DESTROY:
return WmDestroy( hwnd, uMsg, wParam, lParam );
default:
return User32Ex.INSTANCE.CallWindowProc( defaultWndProc, hwnd, uMsg, wParam, lParam );
}
return User32Ex.INSTANCE.CallWindowProc( defaultWndProc, hwnd, uMsg, wParam, lParam );
}
/**
@@ -442,6 +465,44 @@ public class FlatWindowsNativeWindowBorder
private int GET_Y_LPARAM( LPARAM lParam ) {
return (short) ((lParam.longValue() >> 16) & 0xffff);
}
/**
* Opens the window's system menu.
* The system menu is the menu that opens when the user presses Alt+Space or
* right clicks on the title bar
*/
private void openSystemMenu( HWND hwnd, int x, int y ) {
// get system menu
HMENU systemMenu = User32Ex.INSTANCE.GetSystemMenu( hwnd, false );
// update system menu
boolean isMaximized = User32Ex.INSTANCE.IsZoomed( hwnd );
setMenuItemState( systemMenu, SC_RESTORE, isMaximized );
setMenuItemState( systemMenu, SC_MOVE, !isMaximized );
setMenuItemState( systemMenu, SC_SIZE, !isMaximized );
setMenuItemState( systemMenu, SC_MINIMIZE, true );
setMenuItemState( systemMenu, SC_MAXIMIZE, !isMaximized );
setMenuItemState( systemMenu, SC_CLOSE, true );
// make "Close" item the default to be consistent with the system menu shown
// when pressing Alt+Space
User32Ex.INSTANCE.SetMenuDefaultItem( systemMenu, SC_CLOSE, 0 );
// show system menu
int ret = User32Ex.INSTANCE.TrackPopupMenu( systemMenu, TPM_RETURNCMD,
x, y, 0, hwnd, null ).intValue();
if( ret != 0 )
User32Ex.INSTANCE.PostMessage( hwnd, WM_SYSCOMMAND, new WPARAM( ret ), null );
}
private void setMenuItemState( HMENU systemMenu, int item, boolean enabled ) {
MENUITEMINFO mii = new MENUITEMINFO();
mii.cbSize = new UINT( mii.size() );
mii.fMask = new UINT( MIIM_STATE );
mii.fType = new UINT( MFT_STRING );
mii.fState = new UINT( enabled ? MF_ENABLED : MF_DISABLED );
User32Ex.INSTANCE.SetMenuItemInfo( systemMenu, item, false, mii );
}
}
//---- interface User32Ex -------------------------------------------------
@@ -460,6 +521,11 @@ public class FlatWindowsNativeWindowBorder
boolean IsZoomed( HWND hWnd );
HANDLE GetProp( HWND hWnd, String lpString );
HMENU GetSystemMenu( HWND hWnd, boolean bRevert );
boolean SetMenuItemInfo( HMENU hmenu, int item, boolean fByPositon, MENUITEMINFO lpmii );
boolean SetMenuDefaultItem( HMENU hMenu, int uItem, int fByPos );
BOOL TrackPopupMenu( HMENU hMenu, int uFlags, int x, int y, int nReserved, HWND hWnd, RECT prcRect );
}
//---- class NCCALCSIZE_PARAMS --------------------------------------------
@@ -477,4 +543,25 @@ public class FlatWindowsNativeWindowBorder
read();
}
}
//---- class MENUITEMINFO -------------------------------------------------
@FieldOrder( { "cbSize", "fMask", "fType", "fState", "wID", "hSubMenu",
"hbmpChecked", "hbmpUnchecked", "dwItemData", "dwTypeData", "cch", "hbmpItem" } )
public static class MENUITEMINFO
extends Structure
{
public UINT cbSize;
public UINT fMask;
public UINT fType;
public UINT fState;
public UINT wID;
public HMENU hSubMenu;
public HBITMAP hbmpChecked;
public HBITMAP hbmpUnchecked;
public ULONG_PTR dwItemData;
public LPWSTR dwTypeData;
public UINT cch;
public HBITMAP hbmpItem;
}
}