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System File Chooser: fixed font in message dialog on Windows

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This commit is contained in:
Karl Tauber
2025-03-20 18:41:12 +01:00
parent 202a0d159b
commit 3e8b213367
1 changed files with 56 additions and 15 deletions
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71
flatlaf-natives/flatlaf-natives-windows/src/main/cpp/WinMessageDialog.cpp
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@@ -84,10 +84,10 @@ JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_show
// all values in DLUs
#define INSETS_TOP 16
#define INSETS_TOP 12
#define INSETS_LEFT 12
#define INSETS_RIGHT 12
#define INSETS_BOTTOM 8
#define INSETS_BOTTOM 6
#define ICON_TEXT_GAP 8
@@ -96,18 +96,41 @@ JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_show
#define LABEL_HEIGHT 8
#define BUTTON_WIDTH 50
#define BUTTON_HEIGHT 14
#define BUTTON_HEIGHT 12
#define BUTTON_GAP 5
#define BUTTON_TOP_GAP 16
#define BUTTON_TOP_GAP 14
#define BUTTON_LEFT_RIGHT_GAP 8
// based on https://learn.microsoft.com/en-us/windows/win32/dlgbox/using-dialog-boxes#creating-a-template-in-memory
static byte* createInMemoryTemplate( HWND owner, int messageType, LPCWSTR title, LPCWSTR text,
int defaultButton, int buttonCount, LPCWSTR* buttons )
{
//---- calculate layout (in DLUs) ----
// get font info needed for DS_SETFONT
NONCLIENTMETRICS ncMetrics;
ncMetrics.cbSize = sizeof( NONCLIENTMETRICS );
if( !::SystemParametersInfo( SPI_GETNONCLIENTMETRICS, 0, &ncMetrics, 0 ) )
return NULL;
HDC hdc = GetDC( owner );
// create DC to use message font
HDC hdcOwner = ::GetDC( owner );
HDC hdc = ::CreateCompatibleDC( hdcOwner );
::ReleaseDC( owner, hdcOwner );
if( hdc == NULL )
return NULL;
HFONT hfont = ::CreateFontIndirect( &ncMetrics.lfMessageFont );
if( hfont == NULL ) {
::DeleteDC( hdc );
return NULL;
}
if( ::SelectObject( hdc, hfont ) == NULL ) {
::DeleteDC( hdc );
::DeleteObject( hfont );
return NULL;
}
//---- calculate layout (in DLUs) ----
// layout icon
LPWSTR icon;
@@ -226,13 +249,24 @@ static byte* createInMemoryTemplate( HWND owner, int messageType, LPCWSTR title,
int bx = dw - buttonTotalWidth - BUTTON_LEFT_RIGHT_GAP;
int by = dh - BUTTON_HEIGHT - INSETS_BOTTOM;
// get font info needed for DS_SETFONT
int fontPointSize = (ncMetrics.lfMessageFont.lfHeight < 0)
? -MulDiv( ncMetrics.lfMessageFont.lfHeight, 72, ::GetDeviceCaps( hdc, LOGPIXELSY ) )
: ncMetrics.lfMessageFont.lfHeight;
LPCWSTR fontFaceName = ncMetrics.lfMessageFont.lfFaceName;
// delete DC and font
::DeleteDC( hdc );
::DeleteObject( hfont );
// (approximately) calculate memory size needed for in-memory template
int templSize = (sizeof(DLGTEMPLATE) + /*menu*/ 2 + /*class*/ 2 + /*title*/ 2)
+ ((sizeof(DLGITEMTEMPLATE) + /*class*/ 4 + /*title/icon*/ 4 + /*creation data*/ 2) * (/*icon+text*/2 + buttonCount))
+ (title != NULL ? wcslen( title ) * sizeof(wchar_t) : 0)
+ (wcslen( wrappedText ) * sizeof(wchar_t));
+ (title != NULL ? (wcslen( title ) + 1) * sizeof(wchar_t) : 0)
+ /*fontPointSize*/ 2 + ((wcslen( fontFaceName ) + 1) * sizeof(wchar_t))
+ ((wcslen( wrappedText ) + 1) * sizeof(wchar_t));
for( int i = 0; i < buttonCount; i++ )
templSize += (wcslen( buttons[i] ) * sizeof(wchar_t));
templSize += ((wcslen( buttons[i] ) + 1) * sizeof(wchar_t));
templSize += (2 * (1 + 1 + buttonCount)); // necessary for DWORD alignment
templSize += 100; // some reserve
@@ -246,7 +280,7 @@ static byte* createInMemoryTemplate( HWND owner, int messageType, LPCWSTR title,
//---- define dialog box ----
LPDLGTEMPLATE lpdt = (LPDLGTEMPLATE) templ;
lpdt->style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION;
lpdt->style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION | DS_SETFONT;
lpdt->cdit = /*text*/ 1 + buttonCount; // number of controls
lpdt->x = dx;
lpdt->y = dy;
@@ -262,6 +296,10 @@ static byte* createInMemoryTemplate( HWND owner, int messageType, LPCWSTR title,
} else
*lpw++ = 0; // no title
// for DS_SETFONT
*lpw++ = fontPointSize;
wcscpy( (LPWSTR) lpw, fontFaceName );
lpw += wcslen( fontFaceName ) + 1;
//---- define icon ----
@@ -342,11 +380,14 @@ static BOOL CALLBACK focusDefaultButtonProc( HWND hwnd, LPARAM lParam ) {
}
static INT_PTR CALLBACK messageDialogProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) {
if( uMsg == WM_INITDIALOG )
::EnumChildWindows( hwnd, focusDefaultButtonProc, 0 );
else if( uMsg == WM_COMMAND ) {
::EndDialog( hwnd, wParam );
return TRUE;
switch( uMsg ) {
case WM_INITDIALOG:
::EnumChildWindows( hwnd, focusDefaultButtonProc, 0 );
break;
case WM_COMMAND:
::EndDialog( hwnd, wParam );
return TRUE;
}
return FALSE;
}