home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
tv20cpp.zip
/
src
/
TView.cpp
< prev
next >
Wrap
C/C++ Source or Header
|
1998-07-21
|
18KB
|
805 lines
/*
* TView.cc
*
* Turbo Vision - Version 2.0
*
* Copyright (c) 1994 by Borland International
* All Rights Reserved.
*
* Modified by Sergio Sigala <ssigala@globalnet.it>
*/
#define Uses_TKeys
#define Uses_TView
#define Uses_TCommandSet
#define Uses_TPoint
#define Uses_TGroup
#define Uses_TRect
#define Uses_TEvent
#define Uses_opstream
#define Uses_ipstream
#include <tvision/tv.h>
#include <limits.h>
TPoint shadowSize = {2,1};
uchar shadowAttr = 0x08;
Boolean TView::showMarkers = False;
uchar TView::errorAttr = 0xCF;
Boolean TView::commandSetChanged = False;
extern TView *TheTopView;
static TCommandSet initCommands()
{
TCommandSet temp;
for( int i = 0; i < 256; i++ )
temp.enableCmd( i );
temp.disableCmd( cmZoom );
temp.disableCmd( cmClose );
temp.disableCmd( cmResize );
temp.disableCmd( cmNext );
temp.disableCmd( cmPrev );
return temp;
}
TCommandSet TView::curCommandSet = initCommands();
TView::TView( const TRect& bounds) :
owner( 0 ), next( 0 ), options( 0 ), state( sfVisible ),
growMode( 0 ), dragMode( dmLimitLoY ), helpCtx( hcNoContext ),
eventMask( evMouseDown | evKeyDown | evCommand )
{
setBounds( bounds);
cursor.x = cursor.y = 0;
}
TView::~TView()
{
}
void TView::awaken()
{
}
void TView::blockCursor()
{
setState(sfCursorIns, True);
}
#define grow(i) (( (growMode & gfGrowRel)) ? \
(i = (i * s + ((s - d) >> 1)) / (s - d)) : (i += d))
inline int range( int val, int min, int max )
{
if( val < min )
return min;
else if( val > max )
return max;
else
return val;
}
void TView::calcBounds( TRect& bounds, TPoint delta )
{
bounds = getBounds();
short s = owner->size.x;
short d = delta.x;
if( (growMode & gfGrowLoX) != 0 )
grow(bounds.a.x);
if( (growMode & gfGrowHiX) != 0 )
grow(bounds.b.x);
s = owner->size.y;
d = delta.y;
if( (growMode & gfGrowLoY) != 0 )
grow(bounds.a.y);
if( (growMode & gfGrowHiY) != 0 )
grow(bounds.b.y);
TPoint minLim, maxLim;
sizeLimits( minLim, maxLim );
bounds.b.x = bounds.a.x + range( bounds.b.x-bounds.a.x, minLim.x, maxLim.x );
bounds.b.y = bounds.a.y + range( bounds.b.y-bounds.a.y, minLim.y, maxLim.y );
}
void TView::changeBounds( const TRect& bounds )
{
setBounds(bounds);
drawView();
}
void TView::clearEvent( TEvent& event )
{
event.what = evNothing;
event.message.infoPtr = this;
}
Boolean TView::commandEnabled( ushort command )
{
return Boolean((command > 255) || curCommandSet.has(command));
}
ushort TView::dataSize()
{
return 0;
}
void TView::disableCommands( TCommandSet& commands )
{
commandSetChanged = Boolean( commandSetChanged ||
!(curCommandSet & commands).isEmpty());
curCommandSet.disableCmd(commands);
}
void TView::disableCommand( ushort command )
{
commandSetChanged = Boolean( commandSetChanged ||
curCommandSet.has(command) );
curCommandSet.disableCmd(command);
}
void TView::moveGrow( TPoint p,
TPoint s,
TRect& limits,
TPoint minSize,
TPoint maxSize,
uchar mode
)
{
TRect r;
s.x = min(max(s.x, minSize.x), maxSize.x);
s.y = min(max(s.y, minSize.y), maxSize.y);
p.x = min(max(p.x, limits.a.x - s.x+1), limits.b.x-1);
p.y = min(max(p.y, limits.a.y - s.y+1), limits.b.y-1);
if( (mode & dmLimitLoX) != 0 )
p.x = max(p.x, limits.a.x);
if( (mode & dmLimitLoY) != 0 )
p.y = max(p.y, limits.a.y);
if( (mode & dmLimitHiX) != 0 )
p.x = min(p.x, limits.b.x-s.x);
if( (mode & dmLimitHiY) != 0 )
p.y = min(p.y, limits.b.y-s.y);
r = TRect(p.x, p.y, p.x + s.x, p.y + s.y);
locate(r);
}
void TView::change( uchar mode, TPoint delta, TPoint& p, TPoint& s, ulong ctrlState )
{
if( (mode & dmDragMove) != 0 && (ctrlState & kbShift) == 0 )
p += delta;
else if( (mode & dmDragGrow) != 0 && (ctrlState & kbShift) != 0 )
s += delta;
}
void TView::dragView( TEvent& event,
uchar mode,
TRect& limits,
TPoint minSize,
TPoint maxSize
)
{
TRect saveBounds;
TPoint p, s;
setState( sfDragging, True );
if( event.what == evMouseDown )
{
if( (mode & dmDragMove) != 0 )
{
p = origin - event.mouse.where;
do {
event.mouse.where += p;
moveGrow( event.mouse.where,
size,
limits,
minSize,
maxSize,
mode
);
} while( mouseEvent(event,evMouseMove) );
}
else
{
p = size - event.mouse.where;
do {
event.mouse.where += p;
moveGrow( origin,
event.mouse.where,
limits,
minSize,
maxSize,
mode
);
} while( mouseEvent(event,evMouseMove) );
}
}
else
{
static TPoint
goLeft = {-1, 0},
goRight = { 1, 0},
goUp = { 0,-1},
goDown = { 0, 1},
goCtrlLeft = {-8, 0},
goCtrlRight = { 8, 0};
saveBounds = getBounds();
do {
p = origin;
s = size;
keyEvent(event);
switch (event.keyDown.keyCode & 0xFF00)
{
case kbLeft:
change(mode,goLeft,p,s,event.keyDown.controlKeyState);
break;
case kbRight:
change(mode,goRight,p,s,event.keyDown.controlKeyState);
break;
case kbUp:
change(mode,goUp,p,s,event.keyDown.controlKeyState);
break;
case kbDown:
change(mode,goDown,p,s,event.keyDown.controlKeyState);
break;
case kbCtrlLeft:
change(mode,goCtrlLeft,p,s,event.keyDown.controlKeyState);
break;
case kbCtrlRight:
change(mode,goCtrlRight,p,s,event.keyDown.controlKeyState);
break;
case kbHome:
p.x = limits.a.x;
break;
case kbEnd:
p.x = limits.b.x - s.x;
break;
case kbPgUp:
p.y = limits.a.y;
break;
case kbPgDn:
p.y = limits.b.y - s.y;
break;
}
moveGrow( p, s, limits, minSize, maxSize, mode );
} while( event.keyDown.keyCode != kbEsc &&
event.keyDown.keyCode != kbEnter
);
if( event.keyDown.keyCode == kbEsc )
locate(saveBounds);
}
setState(sfDragging, False);
}
void TView::draw()
{
TDrawBuffer b;
b.moveChar( 0, ' ', getColor(1), size.x );
writeLine( 0, 0, size.x, size.y, b );
}
void TView::drawCursor()
{
if( (state & sfFocused) != 0 )
resetCursor();
}
void TView::drawHide( TView* lastView )
{
drawCursor();
drawUnderView(Boolean(state & sfShadow), lastView);
}
void TView::drawShow( TView* lastView )
{
drawView();
if( (state & sfShadow) != 0 )
drawUnderView( True, lastView );
}
void TView::drawUnderRect( TRect& r, TView* lastView )
{
owner->clip.intersect(r);
owner->drawSubViews(nextView(), lastView);
owner->clip = owner->getExtent();
}
void TView::drawUnderView( Boolean doShadow, TView* lastView )
{
TRect r = getBounds();
if( doShadow != False )
r.b += shadowSize;
drawUnderRect( r, lastView );
}
void TView::drawView()
{
if (exposed())
{
draw();
drawCursor();
}
}
void TView::enableCommands( TCommandSet& commands )
{
commandSetChanged = Boolean( commandSetChanged ||
((curCommandSet&commands) != commands) );
curCommandSet += commands;
}
void TView::enableCommand( ushort command )
{
commandSetChanged = Boolean( commandSetChanged ||
!curCommandSet.has( command ) );
curCommandSet += command;
}
void TView::endModal( ushort command )
{
if( TopView() != 0 )
TopView()->endModal(command);
}
Boolean TView::eventAvail()
{
TEvent event;
getEvent(event);
if( event.what != evNothing )
putEvent(event);
return Boolean( event.what != evNothing );
}
TRect TView::getBounds()
{
return TRect( origin, origin+size );
}
ushort TView::execute()
{
return cmCancel;
}
Boolean TView::focus()
{
Boolean result = True;
if ((state & (sfSelected | sfModal)) == 0)
{
if (owner)
{
result = owner->focus();
if (result)
#ifndef __UNPATCHED
if ((owner->current == 0) ||
((owner->current->options & ofValidate) == 0) ||
(owner->current->valid(cmReleasedFocus)))
#else
if ((owner->current->valid(cmReleasedFocus)) &&
((owner->current == 0) ||
((owner->current->options & ofValidate) == 0)))
#endif
select();
else
return False;
}
}
return result;
}
TRect TView::getClipRect()
{
TRect clip = getBounds();
if( owner != 0 )
clip.intersect(owner->clip);
clip.move(-origin.x, -origin.y);
return clip;
}
ushort TView::getColor( ushort color )
{
ushort colorPair = color >> 8;
if( colorPair != 0 )
colorPair = mapColor(colorPair) << 8;
colorPair |= mapColor( uchar(color) );
return colorPair;
}
void TView::getCommands( TCommandSet& commands )
{
commands = curCommandSet;
}
void TView::getData( void * )
{
}
void TView::getEvent( TEvent& event )
{
if( owner != 0 )
owner->getEvent(event);
}
TRect TView::getExtent()
{
return TRect( 0, 0, size.x, size.y );
}
ushort TView::getHelpCtx()
{
if( (state & sfDragging) != 0 )
return hcDragging;
return helpCtx;
}
TPalette& TView::getPalette() const
{
static char ch = 0;
static TPalette palette( &ch, 0 );
return palette;
}
Boolean TView::getState( ushort aState )
{
return Boolean( (state & aState) == aState );
}
void TView::growTo( short x, short y )
{
TRect r = TRect(origin.x, origin.y, origin.x + x, origin.y + y);
locate(r);
}
void TView::handleEvent(TEvent& event)
{
if( event.what == evMouseDown )
{
if(!(state & (sfSelected | sfDisabled)) && (options & ofSelectable) )
if( !focus() || !(options & ofFirstClick) )
clearEvent(event);
}
}
void TView::hide()
{
if( (state & sfVisible) != 0 )
setState( sfVisible, False );
}
void TView::hideCursor()
{
setState( sfCursorVis, False );
}
void TView::keyEvent( TEvent& event )
{
do {
getEvent(event);
} while( event.what != evKeyDown );
}
#define range(Val, Min, Max) (((Val < Min) ? Min : ((Val > Max) ? Max : Val)))
void TView::locate( TRect& bounds )
{
TPoint min, max;
sizeLimits(min, max);
bounds.b.x = bounds.a.x + range(bounds.b.x - bounds.a.x, min.x, max.x);
bounds.b.y = bounds.a.y + range(bounds.b.y - bounds.a.y, min.y, max.y);
TRect r = getBounds();
if( bounds != r )
{
changeBounds( bounds );
if( owner != 0 && (state & sfVisible) != 0 )
{
if( (state & sfShadow) != 0 )
{
r.Union(bounds);
r.b += shadowSize;
}
drawUnderRect( r, 0 );
}
}
}
void TView::makeFirst()
{
putInFrontOf(owner->first());
}
TPoint TView::makeGlobal( TPoint source )
{
TPoint temp = source + origin;
TView *cur = this;
while( cur->owner != 0 )
{
cur = cur->owner;
temp += cur->origin;
}
return temp;
}
TPoint TView::makeLocal( TPoint source )
{
TPoint temp = source - origin;
TView* cur = this;
while( cur->owner != 0 )
{
cur = cur->owner;
temp -= cur->origin;
}
return temp;
}
Boolean TView::mouseEvent(TEvent& event, ushort mask)
{
do {
getEvent(event);
} while( !(event.what & (mask | evMouseUp)) );
return Boolean(event.what != evMouseUp);
}
Boolean TView::mouseInView(TPoint mouse)
{
mouse = makeLocal( mouse );
TRect r = getExtent();
return r.contains(mouse);
}
void TView::moveTo( short x, short y )
{
TRect r( x, y, x+size.x, y+size.y );
locate(r);
}
TView *TView::nextView()
{
if( this == owner->last )
return 0;
else
return next;
}
void TView::normalCursor()
{
setState(sfCursorIns, False);
}
TView *TView::prev()
{
TView* res = this;
while( res->next != this )
res = res->next;
return res;
}
TView *TView::prevView()
{
if( this == owner->first() )
return 0;
else
return prev();
}
void TView::putEvent( TEvent& event )
{
if( owner != 0 )
owner->putEvent(event);
}
void TView::putInFrontOf( TView *Target )
{
TView *p, *lastView;
if( owner != 0 && Target != this && Target != nextView() &&
( Target == 0 || Target->owner == owner)
)
if( (state & sfVisible) == 0 )
{
owner->removeView(this);
owner->insertView(this, Target);
}
else
{
lastView = nextView();
p = Target;
while( p != 0 && p != this )
p = p->nextView();
if( p == 0 )
lastView = Target;
state &= ~sfVisible;
if( lastView == Target )
drawHide(lastView);
owner->removeView(this);
owner->insertView(this, Target);
state |= sfVisible;
if( lastView != Target )
drawShow(lastView);
if( (options & ofSelectable) != 0 )
owner->resetCurrent();
}
}
void TView::select()
{
if( ! (options & ofSelectable))
return;
if( (options & ofTopSelect) != 0 )
makeFirst();
else if( owner != 0 )
owner->setCurrent( this, normalSelect );
}
void TView::setBounds( const TRect& bounds )
{
origin = bounds.a;
size = bounds.b - bounds.a;
}
void TView::setCmdState(TCommandSet& commands, Boolean enable)
{
if (enable)
enableCommands(commands);
else
disableCommands(commands);
}
void TView::setCommands( TCommandSet& commands )
{
commandSetChanged = Boolean( commandSetChanged ||
(curCommandSet != commands ));
curCommandSet = commands;
}
void TView::setCursor( int x, int y )
{
cursor.x = x;
cursor.y = y;
drawCursor();
}
void TView::setData( void * )
{
}
void TView::setState( ushort aState, Boolean enable )
{
if( enable == True )
state |= aState;
else
state &= ~aState;
if( owner == 0 )
return;
switch( aState )
{
case sfVisible:
if( (owner->state & sfExposed) != 0 )
setState( sfExposed, enable );
if( enable == True )
drawShow( 0 );
else
drawHide( 0 );
if( (options & ofSelectable) != 0 )
owner->resetCurrent();
break;
case sfCursorVis:
case sfCursorIns:
drawCursor();
break;
case sfShadow:
drawUnderView( True, 0 );
break;
case sfFocused:
resetCursor();
message( owner,
evBroadcast,
(enable == True) ? cmReceivedFocus : cmReleasedFocus,
this
);
break;
}
}
void TView::show()
{
if( (state & sfVisible) == 0 )
setState(sfVisible, True);
}
void TView::showCursor()
{
setState( sfCursorVis, True );
}
void TView::sizeLimits( TPoint& min, TPoint& max )
{
min.x = min.y = 0;
if( !(growMode & gfFixed) && owner != 0 )
max = owner->size;
else
max.x = max.y = INT_MAX;
}
TView* TView::TopView()
{
if( TheTopView != 0 )
return TheTopView;
else
{
TView* p = this;
while( p != 0 && !(p->state & sfModal) )
p = p->owner;
return p;
}
}
Boolean TView::valid( ushort )
{
return True;
}
Boolean TView::containsMouse( TEvent& event )
{
return Boolean( (state & sfVisible) != 0 &&
mouseInView( event.mouse.where )
);
}
void TView::shutDown()
{
hide();
if( owner != 0 )
owner->remove( this );
TObject::shutDown();
}
#if !defined(NO_STREAMABLE)
void TView::write( opstream& os )
{
ushort saveState =
state & ~( sfActive | sfSelected | sfFocused | sfExposed );
os << origin << size << cursor
<< growMode << dragMode << helpCtx
<< saveState << options << eventMask;
}
void *TView::read( ipstream& is )
{
is >> origin >> size >> cursor
>> growMode >> dragMode >> helpCtx
>> state >> options >> eventMask;
owner = 0;
next = 0;
return this;
}
TStreamable *TView::build()
{
return new TView( streamableInit );
}
TView::TView( StreamableInit )
{
}
#endif