forked from osmocom/wireshark
Make use of text metrics and devmode data to properly format a page for printing. Fixes https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7543
#BACKPORT(1.10,1.8) svn path=/trunk/; revision=49946
This commit is contained in:
Chris Maynard
parent
6fd601bc3b
commit
2c71f23d1e
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@ -23,10 +23,10 @@
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*
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*
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* This original code was from the Technet Article Q139652 :
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* HOWTO: Print a Document
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* HOWTO: Print a Document
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* You can now find it at http://support.microsoft.com/kb/139652
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*/
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#include <string.h>
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#include <stdio.h>
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@ -48,211 +48,233 @@ information.
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See
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http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_62ia.asp
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http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/prntspol_62ia.asp
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for information on printer APIs.
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*/
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static BOOL CALLBACK abort_proc( HDC hDC, int Error );
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static HDC get_printer_dc(void);
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static void init_doc_struct( DOCINFO* di, char* docname);
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static void print_file( const char* file_name, HDC hdc);
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static BOOL CALLBACK abort_proc(HDC hDC, int Error);
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static HDC get_printer_dc(short *width, short *height);
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static void init_doc_struct(DOCINFO* di, char* docname);
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static void print_file(const char* file_name, HDC hdc, int width, int height);
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void print_mswin(const char *file_name)
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{
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HDC hDC;
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DOCINFO di;
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short int width, height;
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{
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HDC hDC;
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DOCINFO di;
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HWND hWndParent = HWND_DESKTOP; /* would be better to be a real window */
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HWND hWndParent = HWND_DESKTOP; /* would be better to be a real window */
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/* Need a printer DC to print to. */
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hDC = get_printer_dc(&width, &height);
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/* Need a printer DC to print to. */
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hDC = get_printer_dc();
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/* Did you get a good DC?, Cancel will return NULL also, so what to do? */
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if( !hDC)
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{
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return;
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}
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/* You always have to use an AbortProc(). */
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if( SetAbortProc( hDC, abort_proc ) == SP_ERROR )
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{
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MessageBox( NULL, "Error setting up AbortProc",
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"Error", MB_APPLMODAL | MB_OK);
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return;
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}
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/* Init the DOCINFO and start the document. */
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init_doc_struct( &di, "MyDoc");
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StartDoc( hDC, &di );
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/* Print one page. */
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StartPage( hDC );
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print_file(file_name, hDC );
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EndPage( hDC );
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/* Indicate end of document. */
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EndDoc( hDC );
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/* Clean up */
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DeleteDC( hDC );
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}
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/*===============================*/
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/* Obtain printer device context */
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/* ==============================*/
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static HDC get_printer_dc(void)
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{
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PRINTDLG pdlg;
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/*
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* XXX - can this be done without a Windows print dialog?
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*
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* "CreateDC()" creates a device context, and you can
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* apparently specify WINSPL16 as the driver name on
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* Windows OT, or the name of a "print provider", such as
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* "WINSPOOL" on Windows NT, to get a context for a printer.
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*
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* The device name would be the printer name as shown by the
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* Print Manager; is there a way to enumerate those?
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*/
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/* Initialize the PRINTDLG structure. */
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memset( &pdlg, 0, sizeof( PRINTDLG ) );
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pdlg.lStructSize = sizeof( PRINTDLG );
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/* Set the flag to return printer DC. */
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pdlg.Flags =
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/* return the device context we need */
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PD_RETURNDC |
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/* disable the "Pages" radio button */
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PD_NOPAGENUMS |
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/* disable the "Selection" radio button */
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PD_NOSELECTION |
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/* let device print multiple pages (if requested) */
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PD_USEDEVMODECOPIESANDCOLLATE;
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/* Invoke the printer dialog box. */
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PrintDlg( &pdlg );
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/* hDC member of the PRINTDLG structure contains the printer DC. */
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return pdlg.hDC;
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}
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/*===============================*/
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/* The Abort Procudure */
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/* ==============================*/
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static BOOL CALLBACK abort_proc( HDC hDC, int Error )
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{
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MSG msg;
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while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
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{
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TranslateMessage( &msg );
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DispatchMessage( &msg );
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}
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return TRUE;
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}
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/*===============================*/
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/* Initialize DOCINFO structure */
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/* ==============================*/
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static void init_doc_struct( DOCINFO* di, char* docname)
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{
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/* Always zero it before using it. */
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memset( di, 0, sizeof( DOCINFO ) );
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/* Fill in the required members. */
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di->cbSize = sizeof( DOCINFO );
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di->lpszDocName = docname;
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}
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/*===============================*/
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/* Drawing on the DC */
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/* ==============================*/
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static void print_file( const char *file_name, HDC hdc) {
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#define max_buf_size 1024
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#define max_lines 66
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#define y_offset 5
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#define x_offset 5
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FILE* fh1;
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size_t results;
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int cnt=0, y_pos = y_offset, y_cnt = 0;
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char buf[ max_buf_size];
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char ch;
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TEXTMETRIC tm;
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GetTextMetrics(hdc, &tm);
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SetMapMode (hdc, MM_TEXT);
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fh1 = ws_fopen( file_name, "r" );
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if( !fh1 ) {
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MessageBox( NULL, "Open failed on input file",
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"Error", MB_APPLMODAL | MB_OK);
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/* Did you get a good DC?, Cancel will return NULL also, so what to do? */
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if (!hDC) {
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return;
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}
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while ((results = fread( &ch, 1, 1, fh1 )) != 0) {
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/* You always have to use an AbortProc(). */
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if (SetAbortProc(hDC, abort_proc) == SP_ERROR) {
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MessageBox(NULL, "Error setting up AbortProc",
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"Error", MB_APPLMODAL | MB_OK);
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return;
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}
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/* Init the DOCINFO and start the document. */
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init_doc_struct(&di, "MyDoc");
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StartDoc(hDC, &di);
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/* Print one page. */
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StartPage(hDC);
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print_file(file_name, hDC, width, height);
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EndPage(hDC);
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/* Indicate end of document. */
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EndDoc(hDC);
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/* Clean up */
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DeleteDC(hDC);
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}
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/* Obtain printer device context */
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static HDC get_printer_dc(short *width, short *height)
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{
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PRINTDLG pdlg;
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PDEVMODE returnedDevmode;
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/*
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* XXX - can this be done without a Windows print dialog?
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*
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* "CreateDC()" creates a device context, and you can
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* apparently specify WINSPL16 as the driver name on
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* Windows OT, or the name of a "print provider", such as
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* "WINSPOOL" on Windows NT, to get a context for a printer.
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*
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* The device name would be the printer name as shown by the
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* Print Manager; is there a way to enumerate those?
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*/
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/* Initialize the PRINTDLG structure. */
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memset(&pdlg, 0, sizeof(PRINTDLG));
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pdlg.lStructSize = sizeof(PRINTDLG);
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/* Set the flag to return printer DC. */
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pdlg.Flags =
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PD_RETURNDC | /* return the device context we need */
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PD_NOPAGENUMS | /* disable the "Pages" radio button */
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PD_NOSELECTION | /* disable the "Selection" radio button */
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PD_USEDEVMODECOPIESANDCOLLATE; /* let device print multiple pages */
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/* Invoke the printer dialog box. */
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if (PrintDlg(&pdlg)) {
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/* http://msdn.microsoft.com/en-us/library/windows/desktop/dd162931%28v=vs.85%29.aspx */
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returnedDevmode = (PDEVMODE)GlobalLock(pdlg.hDevMode);
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if (returnedDevmode->dmOrientation == DMORIENT_LANDSCAPE) {
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*width = returnedDevmode->dmPaperLength;
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*height = returnedDevmode->dmPaperWidth;
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}
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else { /* assume DMORIENT_PORTRAIT */
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*width = returnedDevmode->dmPaperWidth;
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*height = returnedDevmode->dmPaperLength;
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}
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GlobalUnlock(pdlg.hDevMode);
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if (pdlg.hDevMode)
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GlobalFree(pdlg.hDevMode);
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if (pdlg.hDevNames)
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GlobalFree(pdlg.hDevNames);
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}
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/* hDC member of the PRINTDLG structure contains the printer DC. */
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return pdlg.hDC;
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}
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/* The Abort Procedure */
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static BOOL CALLBACK abort_proc(HDC hDC, int Error)
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{
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MSG msg;
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while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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return TRUE;
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}
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/* Initialize DOCINFO structure */
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static void init_doc_struct(DOCINFO* di, char* docname)
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{
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/* Always zero it before using it. */
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memset(di, 0, sizeof(DOCINFO));
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/* Fill in the required members. */
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di->cbSize = sizeof(DOCINFO);
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di->lpszDocName = docname;
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}
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/* Drawing on the DC */
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static void print_file(const char *file_name, HDC hdc, int width, int height)
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{
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#define MAX_BUF_SIZE 1024 /* An arbitrary maximum */
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#define X_OFFSET 5
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#define Y_OFFSET 5
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FILE* fh1;
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size_t results;
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int cnt=0, y_pos = Y_OFFSET, y_cnt = 0;
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char buf[MAX_BUF_SIZE];
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char ch;
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TEXTMETRIC tm;
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int max_chars_per_line, max_lines_per_page;
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SetMapMode(hdc, MM_LOMETRIC);
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GetTextMetrics(hdc, &tm);
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max_chars_per_line = MIN(width / (tm.tmMaxCharWidth + 1), MAX_BUF_SIZE);
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max_lines_per_page = height / (tm.tmHeight + 1);
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SetMapMode(hdc, MM_TEXT);
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GetTextMetrics(hdc, &tm);
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fh1 = ws_fopen(file_name, "r");
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if (!fh1) {
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MessageBox(NULL, "Open failed on input file",
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"Error", MB_APPLMODAL | MB_OK);
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return;
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}
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while ((results = fread(&ch, 1, 1, fh1)) != 0) {
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/* end of page (form feed)? */
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if ( ch == 0x0c){
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if (ch == 0x0c) {
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/* send buffer */
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buf[cnt] = 0;
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TextOut(hdc, x_offset,y_pos, buf, (int) strlen(buf));
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y_pos += tm.tmHeight;
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cnt = 0;
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TextOut(hdc, X_OFFSET,y_pos, buf, (int) strlen(buf));
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y_pos += tm.tmHeight;
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cnt = 0;
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/* reset page */
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EndPage( hdc );
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StartPage( hdc );
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y_pos = y_offset;
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EndPage(hdc);
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StartPage(hdc);
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y_pos = Y_OFFSET;
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y_cnt = 0;
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continue;
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}
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/* end of line (line feed)? */
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if ( ch == 0x0a){
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if (ch == 0x0a) {
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/* send buffer */
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buf[ cnt] = 0;
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TextOut(hdc, x_offset,y_pos, buf, (int) strlen(buf));
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y_pos += tm.tmHeight;
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cnt = 0;
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buf[cnt] = 0;
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TextOut(hdc, X_OFFSET,y_pos, buf, (int) strlen(buf));
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y_pos += tm.tmHeight;
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cnt = 0;
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/* last line on page? -> reset page */
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if ( ++y_cnt == max_lines){
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EndPage( hdc );
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StartPage( hdc );
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y_pos = y_offset;
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if (++y_cnt == max_lines_per_page) {
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EndPage(hdc);
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StartPage(hdc);
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y_pos = Y_OFFSET;
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y_cnt = 0;
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}
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}
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continue;
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}
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/* buffer full? */
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if ( cnt == ( max_buf_size - 1)) {
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if (cnt == (max_chars_per_line - 1)) {
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/* send buffer */
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buf[ cnt] = 0;
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TextOut(hdc, x_offset, y_pos, buf, (int) strlen(buf));
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buf[cnt] = 0;
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TextOut(hdc, X_OFFSET, y_pos, buf, (int) strlen(buf));
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y_pos += tm.tmHeight;
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cnt = 0;
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/* last line on page? -> reset page */
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if ( ++y_cnt == max_lines){
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EndPage( hdc );
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StartPage( hdc );
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y_pos = y_offset;
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y_cnt = 0;
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}
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if (++y_cnt == max_lines_per_page) {
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EndPage(hdc);
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StartPage(hdc);
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y_pos = Y_OFFSET;
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y_cnt = 0;
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}
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continue;
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}
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}
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buf[ cnt++] = ch;
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buf[cnt++] = ch;
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} /* while */
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/* Print the remaining text if needed */
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if ( cnt > 0) {
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buf[ cnt] = 0;
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TextOut(hdc, 0,y_pos, buf, (int) strlen(buf));
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if (cnt > 0) {
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buf[cnt] = 0;
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TextOut(hdc, 0,y_pos, buf, (int) strlen(buf));
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}
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fclose(fh1);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=4 expandtab:
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* :indentSize=4:tabSize=4:noTabs=true:
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*/
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