Sweden-Number/graphics/env.c

149 lines
3.3 KiB
C

/*
* Driver Environment functions
*
* Note: This has NOTHING to do with the task/process environment!
*
* Copyright 1997 Marcus Meissner
* Copyright 1998 Andreas Mohr
*/
#include <stdio.h>
#include <string.h>
#include "config.h"
#include "gdi.h"
#include "debug.h"
#include "heap.h"
DEFAULT_DEBUG_CHANNEL(gdi)
typedef struct {
ATOM atom;
HGLOBAL16 handle;
} ENVTABLE;
static ENVTABLE EnvTable[20];
static ENVTABLE *SearchEnvTable(ATOM atom)
{
INT16 i;
for (i = 19; i >= 0; i--) {
if (EnvTable[i].atom == atom)
return &EnvTable[i];
}
return NULL;
}
static ATOM GDI_GetNullPortAtom(void)
{
static ATOM NullPortAtom = 0;
if (!NullPortAtom)
{
char NullPort[256];
GetProfileStringA( "windows", "nullport", "none",
NullPort, sizeof(NullPort) );
NullPortAtom = AddAtomA( NullPort );
}
return NullPortAtom;
}
static ATOM PortNameToAtom(LPCSTR lpPortName, BOOL16 add)
{
char *p;
BOOL needfree = FALSE;
ATOM ret;
if (lpPortName[strlen(lpPortName) - 1] == ':') {
p = HEAP_strdupA(GetProcessHeap(), 0, lpPortName);
p[strlen(lpPortName) - 1] = '\0';
needfree = TRUE;
}
else
p = (char *)lpPortName;
if (add)
ret = AddAtomA(p);
else
ret = FindAtomA(p);
if(needfree) HeapFree(GetProcessHeap(), 0, p);
return ret;
}
/***********************************************************************
* GetEnvironment (GDI.134)
*/
INT16 WINAPI GetEnvironment16(LPCSTR lpPortName, LPDEVMODE16 lpdev, UINT16 nMaxSize)
{
ATOM atom;
LPCSTR p;
ENVTABLE *env;
WORD size;
TRACE(gdi, "('%s', %p, %d)\n", lpPortName, lpdev, nMaxSize);
if (!(atom = PortNameToAtom(lpPortName, FALSE)))
return 0;
if (atom == GDI_GetNullPortAtom())
if (!(atom = FindAtomA((LPCSTR)lpdev)))
return 0;
if (!(env = SearchEnvTable(atom)))
return 0;
size = GlobalSize16(env->handle);
if (!lpdev) return 0;
if (size < nMaxSize) nMaxSize = size;
if (!(p = GlobalLock16(env->handle))) return 0;
memcpy(lpdev, p, nMaxSize);
GlobalUnlock16(env->handle);
return nMaxSize;
}
/***********************************************************************
* SetEnvironment (GDI.132)
*/
INT16 WINAPI SetEnvironment16(LPCSTR lpPortName, LPDEVMODE16 lpdev, UINT16 nCount)
{
ATOM atom;
BOOL16 nullport = FALSE;
LPSTR p;
ENVTABLE *env;
HGLOBAL16 handle;
TRACE(gdi, "('%s', %p, %d)\n", lpPortName, lpdev, nCount);
if ((atom = PortNameToAtom(lpPortName, FALSE))) {
if (atom == GDI_GetNullPortAtom()) {
nullport = TRUE;
atom = FindAtomA((LPCSTR)lpdev);
}
env = SearchEnvTable(atom);
GlobalFree16(env->handle);
env->atom = 0;
}
if (nCount) { /* store DEVMODE struct */
if (nullport)
p = (LPSTR)lpdev;
else
p = (LPSTR)lpPortName;
if ((atom = PortNameToAtom(p, TRUE))
&& (env = SearchEnvTable(0))
&& (handle = GlobalAlloc16(GMEM_SHARE|GMEM_MOVEABLE, nCount))) {
if (!(p = GlobalLock16(handle))) {
GlobalFree16(handle);
return 0;
}
env->atom = atom;
env->handle = handle;
memcpy(p, lpdev, nCount);
GlobalUnlock16(handle);
return handle;
}
else return 0;
}
else return -1;
}