mirror of
https://github.com/JFormDesigner/FlatLaf.git
synced 2026-02-10 22:17:13 -06:00
System File Chooser: support system message dialog with custom buttons on Windows (not yet used in SystemFileChooser
This commit is contained in:
Karl Tauber
@@ -36,8 +36,11 @@
|
||||
* @author Karl Tauber
|
||||
*/
|
||||
|
||||
HINSTANCE _instance;
|
||||
|
||||
extern "C"
|
||||
BOOL WINAPI _DllMainCRTStartup( HINSTANCE instance, DWORD reason, LPVOID reserved ) {
|
||||
_instance = instance;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
/*
|
||||
* Copyright 2024 FormDev Software GmbH
|
||||
* Copyright 2025 FormDev Software GmbH
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
@@ -18,6 +18,7 @@
|
||||
#define _NO_CRT_STDIO_INLINE
|
||||
|
||||
#include <windows.h>
|
||||
#include <stdio.h>
|
||||
#include "JNIUtils.h"
|
||||
#include "com_formdev_flatlaf_ui_FlatNativeWindowsLibrary.h"
|
||||
|
||||
@@ -26,8 +27,24 @@
|
||||
* @since 3.6
|
||||
*/
|
||||
|
||||
#define ID_BUTTON1 101
|
||||
|
||||
// declare external fields
|
||||
extern HINSTANCE _instance;
|
||||
|
||||
// declare internal methods
|
||||
static byte* createInMemoryTemplate( HWND owner, int messageType, LPCWSTR title, LPCWSTR text,
|
||||
int defaultButton, int buttonCount, LPCWSTR* buttons );
|
||||
static INT_PTR CALLBACK messageDialogProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
|
||||
static int textLengthAsDLUs( HDC hdc, LPCWSTR str, int strLen );
|
||||
static LONG pixel2dluX( LONG px );
|
||||
static LONG pixel2dluY( LONG px );
|
||||
static LONG dluX2pixel( LONG dluX );
|
||||
static LPWORD lpwAlign( LPWORD lpIn );
|
||||
|
||||
|
||||
extern "C"
|
||||
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_showMessageDialog
|
||||
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_showMessageBox
|
||||
( JNIEnv* env, jclass cls, jlong hwndParent, jstring text, jstring caption, jint type )
|
||||
{
|
||||
// convert Java strings to C strings
|
||||
@@ -36,3 +53,326 @@ JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_show
|
||||
|
||||
return ::MessageBox( reinterpret_cast<HWND>( hwndParent ), ctext, ccaption, type );
|
||||
}
|
||||
|
||||
extern "C"
|
||||
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_showMessageDialog
|
||||
( JNIEnv* env, jclass cls, jlong hwndParent, jint messageType, jstring title,
|
||||
jstring text, jint defaultButton, jobjectArray buttons )
|
||||
{
|
||||
HWND owner = reinterpret_cast<HWND>( hwndParent );
|
||||
|
||||
// convert Java strings to C strings
|
||||
AutoReleaseString ctitle( env, title );
|
||||
AutoReleaseString ctext( env, text );
|
||||
AutoReleaseStringArray cbuttons( env, buttons );
|
||||
|
||||
// get title from parent window if necessary
|
||||
WCHAR parentTitle[100];
|
||||
if( ctitle == NULL )
|
||||
::GetWindowText( owner, parentTitle, 100 );
|
||||
|
||||
byte* templ = createInMemoryTemplate( owner, messageType, (ctitle != NULL) ? ctitle : parentTitle,
|
||||
ctext, defaultButton, cbuttons.count, cbuttons );
|
||||
if( templ == NULL )
|
||||
return -1;
|
||||
|
||||
LRESULT ret = ::DialogBoxIndirect( _instance, (LPDLGTEMPLATE) templ, owner, messageDialogProc );
|
||||
delete templ;
|
||||
return (ret >= ID_BUTTON1) ? ret - ID_BUTTON1 : -1;
|
||||
}
|
||||
|
||||
|
||||
// all values in DLUs
|
||||
|
||||
#define INSETS_TOP 16
|
||||
#define INSETS_LEFT 12
|
||||
#define INSETS_RIGHT 12
|
||||
#define INSETS_BOTTOM 8
|
||||
|
||||
#define ICON_TEXT_GAP 8
|
||||
|
||||
#define LABEL_MIN_WIDTH 100
|
||||
#define LABEL_MAX_WIDTH 250
|
||||
#define LABEL_HEIGHT 8
|
||||
|
||||
#define BUTTON_WIDTH 50
|
||||
#define BUTTON_HEIGHT 14
|
||||
#define BUTTON_GAP 5
|
||||
#define BUTTON_TOP_GAP 16
|
||||
#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) ----
|
||||
|
||||
HDC hdc = GetDC( owner );
|
||||
|
||||
// layout icon
|
||||
LPWSTR icon;
|
||||
switch( messageType ) {
|
||||
case /* JOptionPane.ERROR_MESSAGE */ 0: icon = IDI_ERROR; break;
|
||||
case /* JOptionPane.INFORMATION_MESSAGE */ 1: icon = IDI_INFORMATION; break;
|
||||
case /* JOptionPane.WARNING_MESSAGE */ 2: icon = IDI_WARNING; break;
|
||||
case /* JOptionPane.QUESTION_MESSAGE */ 3: icon = IDI_QUESTION; break;
|
||||
default:
|
||||
case /* JOptionPane.PLAIN_MESSAGE */ -1: icon = NULL; break;
|
||||
}
|
||||
int ix = INSETS_LEFT;
|
||||
int iy = INSETS_TOP;
|
||||
int iw = pixel2dluX( ::GetSystemMetrics( SM_CXICON ) );
|
||||
int ih = pixel2dluY( ::GetSystemMetrics( SM_CYICON ) );
|
||||
|
||||
// layout text
|
||||
int tx = ix + (icon != NULL ? iw + ICON_TEXT_GAP : 0);
|
||||
int ty = iy;
|
||||
int tw = 0;
|
||||
int th = 0;
|
||||
if( text == NULL )
|
||||
text = L"";
|
||||
LPWSTR wrappedText = new WCHAR[wcslen( text ) + 1];
|
||||
wcscpy( wrappedText, text );
|
||||
LPWSTR lineStart = wrappedText;
|
||||
for( LPWSTR t = wrappedText; ; t++ ) {
|
||||
if( *t != '\n' && *t != 0 )
|
||||
continue;
|
||||
|
||||
// calculate line width (in pixels) and number of charaters that fit into LABEL_MAX_WIDTH
|
||||
int lineLen = t - lineStart;
|
||||
int fit = 0;
|
||||
SIZE size{ 0 };
|
||||
if( !::GetTextExtentExPoint( hdc, lineStart, lineLen, dluX2pixel( LABEL_MAX_WIDTH ), &fit, NULL, &size ) )
|
||||
break;
|
||||
|
||||
if( fit < lineLen ) {
|
||||
// wrap too long line --> try to wrap at space character
|
||||
bool wrapped = false;
|
||||
for( LPWSTR t2 = lineStart + fit - 1; t2 > lineStart; t2-- ) {
|
||||
if( *t2 == ' ' || *t2 == '\t' ) {
|
||||
*t2 = '\n';
|
||||
int w = textLengthAsDLUs( hdc, lineStart, t2 - lineStart );
|
||||
tw = max( tw, w );
|
||||
th += LABEL_HEIGHT;
|
||||
|
||||
// continue wrapping after inserted line break
|
||||
t = t2;
|
||||
lineStart = t + 1;
|
||||
wrapped = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if( !wrapped ) {
|
||||
// not able to wrap at word --> break long word
|
||||
int breakIndex = (lineStart + fit) - wrappedText;
|
||||
int w = textLengthAsDLUs( hdc, lineStart, breakIndex );
|
||||
tw = max( tw, w );
|
||||
th += LABEL_HEIGHT;
|
||||
|
||||
// duplicate string
|
||||
LPWSTR wrappedText2 = new WCHAR[wcslen( wrappedText ) + 1 + 1];
|
||||
// use wcscpy(), instead of wcsncpy(), because this method is inlined and does not require linking to runtime lib
|
||||
wcscpy( wrappedText2, wrappedText );
|
||||
wrappedText2[breakIndex] = '\n';
|
||||
wcscpy( wrappedText2 + breakIndex + 1, wrappedText + breakIndex );
|
||||
|
||||
// delete old text
|
||||
delete[] wrappedText;
|
||||
wrappedText = wrappedText2;
|
||||
|
||||
// continue wrapping after inserted line break
|
||||
t = wrappedText + breakIndex;
|
||||
lineStart = t + 1;
|
||||
}
|
||||
} else {
|
||||
// line fits into LABEL_MAX_WIDTH
|
||||
int w = pixel2dluX( size.cx );
|
||||
tw = max( tw, w );
|
||||
th += LABEL_HEIGHT;
|
||||
lineStart = t + 1;
|
||||
}
|
||||
|
||||
if( *t == 0 )
|
||||
break;
|
||||
}
|
||||
tw = min( max( tw, LABEL_MIN_WIDTH ), LABEL_MAX_WIDTH );
|
||||
th = max( th, LABEL_HEIGHT );
|
||||
if( icon != NULL && th < ih )
|
||||
ty += (ih - th) / 2; // vertically center text
|
||||
|
||||
// layout buttons
|
||||
int* bw = new int[buttonCount];
|
||||
int buttonTotalWidth = BUTTON_GAP * (buttonCount - 1);
|
||||
for( int i = 0; i < buttonCount; i++ ) {
|
||||
int w = textLengthAsDLUs( hdc, buttons[i], -1 ) + 16;
|
||||
bw[i] = max( BUTTON_WIDTH, w );
|
||||
buttonTotalWidth += bw[i];
|
||||
}
|
||||
|
||||
// layout dialog
|
||||
int dx = 0;
|
||||
int dy = 0;
|
||||
int dw = max( tx + tw + INSETS_RIGHT, BUTTON_LEFT_RIGHT_GAP + buttonTotalWidth + BUTTON_LEFT_RIGHT_GAP );
|
||||
int dh = max( iy + ih, ty + th ) + BUTTON_TOP_GAP + BUTTON_HEIGHT + INSETS_BOTTOM;
|
||||
|
||||
// center dialog in owner
|
||||
RECT ownerRect{ 0 };
|
||||
if( ::GetClientRect( owner, &ownerRect ) ) {
|
||||
dx = (pixel2dluX( ownerRect.right - ownerRect.left ) - dw) / 2;
|
||||
dy = (pixel2dluY( ownerRect.bottom - ownerRect.top ) - dh) / 2;
|
||||
}
|
||||
|
||||
// layout button area
|
||||
int bx = dw - buttonTotalWidth - BUTTON_LEFT_RIGHT_GAP;
|
||||
int by = dh - BUTTON_HEIGHT - INSETS_BOTTOM;
|
||||
|
||||
// (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));
|
||||
for( int i = 0; i < buttonCount; i++ )
|
||||
templSize += (wcslen( buttons[i] ) * sizeof(wchar_t));
|
||||
|
||||
templSize += (2 * (1 + 1 + buttonCount)); // necessary for DWORD alignment
|
||||
templSize += 100; // some reserve
|
||||
|
||||
// allocate memory for in-memory template
|
||||
byte* templ = new byte[templSize];
|
||||
if( templ == NULL )
|
||||
return NULL;
|
||||
|
||||
|
||||
//---- define dialog box ----
|
||||
|
||||
LPDLGTEMPLATE lpdt = (LPDLGTEMPLATE) templ;
|
||||
lpdt->style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION;
|
||||
lpdt->cdit = /*text*/ 1 + buttonCount; // number of controls
|
||||
lpdt->x = dx;
|
||||
lpdt->y = dy;
|
||||
lpdt->cx = dw;
|
||||
lpdt->cy = dh;
|
||||
|
||||
LPWORD lpw = (LPWORD) (lpdt + 1);
|
||||
*lpw++ = 0; // no menu
|
||||
*lpw++ = 0; // predefined dialog box class (by default)
|
||||
if( title != NULL ) {
|
||||
wcscpy( (LPWSTR) lpw, title );
|
||||
lpw += wcslen( title ) + 1;
|
||||
} else
|
||||
*lpw++ = 0; // no title
|
||||
|
||||
|
||||
//---- define icon ----
|
||||
|
||||
if( icon != NULL ) {
|
||||
lpdt->cdit++;
|
||||
|
||||
lpw = lpwAlign( lpw );
|
||||
LPDLGITEMTEMPLATE lpdit = (LPDLGITEMTEMPLATE) lpw;
|
||||
lpdit->x = ix;
|
||||
lpdit->y = iy;
|
||||
lpdit->cx = iw;
|
||||
lpdit->cy = ih;
|
||||
lpdit->id = ID_BUTTON1 - 1;
|
||||
lpdit->style = WS_CHILD | WS_VISIBLE | SS_ICON;
|
||||
|
||||
lpw = (LPWORD) (lpdit + 1);
|
||||
*lpw++ = 0xffff; *lpw++ = 0x0082; // Static class
|
||||
*lpw++ = 0xffff; *lpw++ = (WORD) icon; // icon
|
||||
*lpw++ = 0; // creation data
|
||||
}
|
||||
|
||||
|
||||
//---- define text ----
|
||||
|
||||
lpw = lpwAlign( lpw );
|
||||
LPDLGITEMTEMPLATE lpdit = (LPDLGITEMTEMPLATE) lpw;
|
||||
lpdit->x = tx;
|
||||
lpdit->y = ty;
|
||||
lpdit->cx = tw;
|
||||
lpdit->cy = th;
|
||||
lpdit->id = ID_BUTTON1 - 2;
|
||||
lpdit->style = WS_CHILD | WS_VISIBLE | SS_LEFT | SS_NOPREFIX | SS_EDITCONTROL;
|
||||
|
||||
lpw = (LPWORD) (lpdit + 1);
|
||||
*lpw++ = 0xffff; *lpw++ = 0x0082; // Static class
|
||||
wcscpy( (LPWSTR) lpw, wrappedText ); lpw += wcslen( wrappedText ) + 1; // text
|
||||
*lpw++ = 0; // creation data
|
||||
|
||||
|
||||
//---- define buttons ----
|
||||
|
||||
defaultButton = min( max( defaultButton, 0 ), buttonCount - 1 );
|
||||
int buttonId = ID_BUTTON1;
|
||||
for( int i = 0; i < buttonCount; i++ ) {
|
||||
lpw = lpwAlign( lpw );
|
||||
LPDLGITEMTEMPLATE lpdit = (LPDLGITEMTEMPLATE) lpw;
|
||||
lpdit->x = bx;
|
||||
lpdit->y = by;
|
||||
lpdit->cx = bw[i];
|
||||
lpdit->cy = BUTTON_HEIGHT;
|
||||
lpdit->id = buttonId++;
|
||||
lpdit->style = WS_CHILD | WS_VISIBLE | WS_TABSTOP | (i == 0 ? WS_GROUP : 0)
|
||||
| BS_TEXT | (i == defaultButton ? BS_DEFPUSHBUTTON : BS_PUSHBUTTON);
|
||||
|
||||
lpw = (LPWORD) (lpdit + 1);
|
||||
*lpw++ = 0xffff; *lpw++ = 0x0080; // Button class
|
||||
wcscpy( (LPWSTR) lpw, buttons[i] ); lpw += wcslen( buttons[i] ) + 1; // text
|
||||
*lpw++ = 0; // creation data
|
||||
|
||||
bx += bw[i] + BUTTON_GAP;
|
||||
}
|
||||
|
||||
delete[] wrappedText;
|
||||
delete[] bw;
|
||||
|
||||
return templ;
|
||||
}
|
||||
|
||||
static BOOL CALLBACK focusDefaultButtonProc( HWND hwnd, LPARAM lParam ) {
|
||||
if( ::GetWindowLong( hwnd, GWL_ID ) >= ID_BUTTON1 ) {
|
||||
LONG style = ::GetWindowLong( hwnd, GWL_STYLE );
|
||||
if( (style & BS_DEFPUSHBUTTON) != 0 ) {
|
||||
::SetFocus( hwnd );
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static int textLengthAsDLUs( HDC hdc, LPCWSTR str, int strLen ) {
|
||||
SIZE size{ 0 };
|
||||
::GetTextExtentPoint32( hdc, str, (strLen >= 0) ? strLen : wcslen( str ), &size );
|
||||
return pixel2dluX( size.cx );
|
||||
}
|
||||
|
||||
static LONG pixel2dluX( LONG px ) {
|
||||
return MulDiv( px, 4, LOWORD( ::GetDialogBaseUnits() ) );
|
||||
}
|
||||
|
||||
static LONG pixel2dluY( LONG py ) {
|
||||
return MulDiv( py, 8, HIWORD( ::GetDialogBaseUnits() ) );
|
||||
}
|
||||
|
||||
static LONG dluX2pixel( LONG dluX ) {
|
||||
return MulDiv( dluX, LOWORD( ::GetDialogBaseUnits() ), 4 );
|
||||
}
|
||||
|
||||
static LPWORD lpwAlign( LPWORD lpIn ) {
|
||||
ULONG_PTR ul = (ULONG_PTR) lpIn;
|
||||
ul += 3;
|
||||
ul >>= 2;
|
||||
ul <<= 2;
|
||||
return (LPWORD) ul;
|
||||
}
|
||||
|
||||
@@ -124,9 +124,17 @@ JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibr
|
||||
/*
|
||||
* Class: com_formdev_flatlaf_ui_FlatNativeWindowsLibrary
|
||||
* Method: showMessageDialog
|
||||
* Signature: (JLjava/lang/String;Ljava/lang/String;I)I
|
||||
* Signature: (JILjava/lang/String;Ljava/lang/String;I[Ljava/lang/String;)I
|
||||
*/
|
||||
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_showMessageDialog
|
||||
(JNIEnv *, jclass, jlong, jint, jstring, jstring, jint, jobjectArray);
|
||||
|
||||
/*
|
||||
* Class: com_formdev_flatlaf_ui_FlatNativeWindowsLibrary
|
||||
* Method: showMessageBox
|
||||
* Signature: (JLjava/lang/String;Ljava/lang/String;I)I
|
||||
*/
|
||||
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeWindowsLibrary_showMessageBox
|
||||
(JNIEnv *, jclass, jlong, jstring, jstring, jint);
|
||||
|
||||
#ifdef __cplusplus
|
||||
|
||||
Reference in New Issue
Block a user