reactos/rosapps/dflat32/video.c

324 lines
6.7 KiB
C
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/* --------------------- video.c -------------------- */
#include "dflat.h"
#define clr(fg,bg) ((fg)|((bg)<<4))
BOOL ClipString;
/* -- read a rectangle of video memory into a save buffer -- */
void GetVideo(DFRECT rc, PCHAR_INFO bf)
{
COORD Size;
COORD Pos;
SMALL_RECT Rect;
Size.X = RectRight(rc) - RectLeft(rc) + 1;
Size.Y = RectBottom(rc) - RectTop(rc) + 1;
Pos.X = 0;
Pos.Y = 0;
Rect.Left = RectLeft(rc);
Rect.Top = RectTop(rc);
Rect.Right = RectRight(rc);
Rect.Bottom = RectBottom(rc);
ReadConsoleOutput (GetStdHandle (STD_OUTPUT_HANDLE),
bf,
Size,
Pos,
&Rect);
}
/* -- write a rectangle of video memory from a save buffer -- */
void StoreVideo(DFRECT rc, PCHAR_INFO bf)
{
COORD Size;
COORD Pos;
SMALL_RECT Rect;
Size.X = RectRight(rc) - RectLeft(rc) + 1;
Size.Y = RectBottom(rc) - RectTop(rc) + 1;
Pos.X = 0;
Pos.Y = 0;
Rect.Left = RectLeft(rc);
Rect.Top = RectTop(rc);
Rect.Right = RectRight(rc);
Rect.Bottom = RectBottom(rc);
WriteConsoleOutput (GetStdHandle (STD_OUTPUT_HANDLE),
bf,
Size,
Pos,
&Rect);
}
/* -------- read a character of video memory ------- */
char GetVideoChar(int x, int y)
{
COORD pos;
DWORD dwRead;
char ch;
pos.X = x;
pos.Y = y;
ReadConsoleOutputCharacter (GetStdHandle(STD_OUTPUT_HANDLE),
&ch,
1,
pos,
&dwRead);
return ch;
}
/* -------- write a character of video memory ------- */
void PutVideoChar(int x, int y, int ch)
{
COORD pos;
DWORD dwWritten;
if (x < sScreenWidth && y < sScreenHeight)
{
pos.X = x;
pos.Y = y;
WriteConsoleOutputCharacter (GetStdHandle(STD_OUTPUT_HANDLE),
(char *)&ch,
1,
pos,
&dwWritten);
}
}
BOOL CharInView(DFWINDOW wnd, int x, int y)
{
DFWINDOW nwnd = NextWindow(wnd);
DFWINDOW pwnd;
DFRECT rc;
int x1 = GetLeft(wnd)+x;
int y1 = GetTop(wnd)+y;
if (!TestAttribute(wnd, VISIBLE))
return FALSE;
if (!TestAttribute(wnd, NOCLIP))
{
DFWINDOW wnd1 = GetParent(wnd);
while (wnd1 != NULL)
{
/* clip character to parent's borders */
if (!TestAttribute(wnd1, VISIBLE))
return FALSE;
if (!InsideRect(x1, y1, ClientRect(wnd1)))
return FALSE;
wnd1 = GetParent(wnd1);
}
}
while (nwnd != NULL)
{
if (!isHidden(nwnd) && !isAncestor(wnd, nwnd))
{
rc = WindowRect(nwnd);
if (TestAttribute(nwnd, SHADOW))
{
RectBottom(rc)++;
RectRight(rc)++;
}
if (!TestAttribute(nwnd, NOCLIP))
{
pwnd = nwnd;
while (GetParent(pwnd))
{
pwnd = GetParent(pwnd);
rc = subRectangle(rc, ClientRect(pwnd));
}
}
if (InsideRect(x1,y1,rc))
return FALSE;
}
nwnd = NextWindow(nwnd);
}
return (x1 < sScreenWidth && y1 < sScreenHeight);
}
/* -------- write a character to a window ------- */
void wputch(DFWINDOW wnd, int c, int x, int y)
{
if (CharInView(wnd, x, y))
{
DWORD dwWritten;
COORD pos;
WORD Attr;
pos.X = GetLeft(wnd)+x;
pos.Y = GetTop(wnd)+y;
Attr = clr(foreground, background);
WriteConsoleOutputAttribute (GetStdHandle(STD_OUTPUT_HANDLE),
&Attr,
1,
pos,
&dwWritten);
WriteConsoleOutputCharacter (GetStdHandle(STD_OUTPUT_HANDLE),
(char *)&c,
1,
pos,
&dwWritten);
}
}
/* ------- write a string to a window ---------- */
void wputs(DFWINDOW wnd, void *s, int x, int y)
{
int x1 = GetLeft(wnd)+x;
int x2 = x1;
int y1 = GetTop(wnd)+y;
if (x1 < sScreenWidth && y1 < sScreenHeight && isVisible(wnd))
{
char ln[200];
WORD attr[200];
char *cp = ln;
WORD *ap = attr;
unsigned char *str = s;
int fg = foreground;
int bg = background;
int len;
int off = 0;
while (*str)
{
if (*str == CHANGECOLOR)
{
str++;
foreground = (*str++) & 0x7f;
background = (*str++) & 0x7f;
continue;
}
if (*str == RESETCOLOR)
{
foreground = fg & 0x7f;
background = bg & 0x7f;
str++;
continue;
}
*cp = (*str & 255);
*ap = (WORD)clr(foreground, background);
// *cp1 = (*str & 255) | (clr(foreground, background) << 8);
// if (ClipString)
// if (!CharInView(wnd, x, y))
// *cp1 = peek(video_address, vad(x2,y1));
cp++;
ap++;
str++;
x++;
x2++;
}
foreground = fg;
background = bg;
len = (int)(cp-ln);
if (x1+len > sScreenWidth)
len = sScreenWidth-x1;
if (!ClipString && !TestAttribute(wnd, NOCLIP))
{
/* -- clip the line to within ancestor windows -- */
DFRECT rc = WindowRect(wnd);
DFWINDOW nwnd = GetParent(wnd);
while (len > 0 && nwnd != NULL)
{
if (!isVisible(nwnd))
{
len = 0;
break;
}
rc = subRectangle(rc, ClientRect(nwnd));
nwnd = GetParent(nwnd);
}
while (len > 0 && !InsideRect(x1+off,y1,rc))
{
off++;
--len;
}
if (len > 0)
{
x2 = x1+len-1;
while (len && !InsideRect(x2,y1,rc))
{
--x2;
--len;
}
}
}
if (len > 0)
{
COORD pos;
DWORD dwWritten;
pos.X = x1;
pos.Y = y1;
WriteConsoleOutputAttribute (GetStdHandle(STD_OUTPUT_HANDLE),
attr,
len,
pos,
&dwWritten);
WriteConsoleOutputCharacter (GetStdHandle(STD_OUTPUT_HANDLE),
ln,
len,
pos,
&dwWritten);
}
}
}
/* --------- scroll the window. d: 1 = up, 0 = dn ---------- */
void scroll_window(DFWINDOW wnd, DFRECT rc, int d)
{
if (RectTop(rc) != RectBottom(rc))
{
CHAR_INFO ciFill;
SMALL_RECT rcScroll;
SMALL_RECT rcClip;
COORD pos;
ciFill.Attributes = clr(WndForeground(wnd),WndBackground(wnd));
ciFill.Char.AsciiChar = ' ';
rcScroll.Left = RectLeft(rc);
rcScroll.Right = RectRight(rc);
rcScroll.Top = RectTop(rc);
rcScroll.Bottom = RectBottom(rc);
rcClip = rcScroll;
pos.X = RectLeft(rc);
if (d == 0)
{
/* scroll 1 line down */
pos.Y = RectTop(rc)+1;
}
else
{
/* scroll 1 line up */
pos.Y = RectTop(rc)-1;
}
ScrollConsoleScreenBuffer (GetStdHandle(STD_OUTPUT_HANDLE),
&rcScroll,
&rcClip,
pos,
&ciFill);
}
}
/* EOF */