mirror of https://github.com/rfivet/uemacs.git
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* wscreen.c -- windows screen console for MINGW32 */
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#include "wscreen.h"
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#ifdef MINGW32
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* Standard error macro for reporting API errors */
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#define PERR(bSuccess, api){if(!(bSuccess)) printf("%s:Error %ld from %s \
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on line %d\n", __FILE__, GetLastError(), api, __LINE__);}
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static void cls( HANDLE hConsole )
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{
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COORD coordScreen = { 0, 0 }; /* here's where we'll home the
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cursor */
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BOOL bSuccess;
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DWORD cCharsWritten;
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CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */
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DWORD dwConSize; /* number of character cells in
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the current buffer */
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/* get the number of character cells in the current buffer */
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bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
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PERR( bSuccess, "GetConsoleScreenBufferInfo" );
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dwConSize = csbi.dwSize.X * csbi.dwSize.Y;
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/* fill the entire screen with blanks */
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bSuccess = FillConsoleOutputCharacter( hConsole, (TCHAR) ' ',
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dwConSize, coordScreen, &cCharsWritten );
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PERR( bSuccess, "FillConsoleOutputCharacter" );
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/* get the current text attribute */
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bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
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PERR( bSuccess, "ConsoleScreenBufferInfo" );
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/* now set the buffer's attributes accordingly */
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bSuccess = FillConsoleOutputAttribute( hConsole, csbi.wAttributes,
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dwConSize, coordScreen, &cCharsWritten );
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PERR( bSuccess, "FillConsoleOutputAttribute" );
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/* put the cursor at (0, 0) */
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bSuccess = SetConsoleCursorPosition( hConsole, coordScreen );
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PERR( bSuccess, "SetConsoleCursorPosition" );
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return;
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}
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void wcls( void) {
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cls( GetStdHandle( STD_OUTPUT_HANDLE)) ;
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}
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static struct {
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int width ;
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int height ;
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int curTop, curBot, curRight, curLeft ;
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} Screen ;
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void winit( void) {
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CONSOLE_SCREEN_BUFFER_INFO csbInfo ;
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wcls() ;
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if( GetConsoleScreenBufferInfo(
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GetStdHandle( STD_OUTPUT_HANDLE), &csbInfo)) {
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Screen.width = csbInfo.dwSize.X ;
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Screen.height = csbInfo.dwSize.Y ;
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Screen.curLeft = csbInfo.srWindow.Left ;
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Screen.curTop = csbInfo.srWindow.Top ;
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Screen.curRight = csbInfo.srWindow.Right ;
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Screen.curBot = csbInfo.srWindow.Bottom ;
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}
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}
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int wwidth( void) {
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return Screen.width ;
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}
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int wheight( void) {
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return Screen.height ;
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}
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int wleft( void) {
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return Screen.curLeft ;
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}
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int wtop( void) {
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return Screen.curTop ;
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}
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int wright( void) {
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return Screen.curRight ;
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}
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int wbottom( void) {
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return Screen.curBot ;
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}
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void wgoxy( int x, int y) {
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COORD coord ;
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coord.X = x ;
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coord.Y = y ;
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SetConsoleCursorPosition( GetStdHandle( STD_OUTPUT_HANDLE), coord );
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}
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void wtitle( const char *title) {
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SetConsoleTitle( title) ;
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}
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#endif /* MINGW32 */
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/* end of wscreen.c */
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