void EDA_DRAW_PANEL::SetClipBox( wxDC& aDC, const wxRect* aRect )
{
wxRect clipBox;
// Use the entire visible device area if no clip area was defined.
if( aRect == NULL )
{
BASE_SCREEN* Screen = GetScreen();
if( !Screen )
return;
Screen->m_StartVisu = CalcUnscrolledPosition( wxPoint( 0, 0 ) );
clipBox.SetSize( GetClientSize() );
int scrollX, scrollY;
double scalar = Screen->GetScalingFactor();
scrollX = KiROUND( Screen->GetGridSize().x * scalar );
scrollY = KiROUND( Screen->GetGridSize().y * scalar );
m_scrollIncrementX = std::max( GetClientSize().x / 8, scrollX );
m_scrollIncrementY = std::max( GetClientSize().y / 8, scrollY );
Screen->m_ScrollbarPos.x = GetScrollPos( wxHORIZONTAL );
Screen->m_ScrollbarPos.y = GetScrollPos( wxVERTICAL );
}
else
{
clipBox = *aRect;
}
// Pad clip box in device units.
clipBox.Inflate( CLIP_BOX_PADDING );
// Convert from device units to drawing units.
m_ClipBox.SetOrigin( wxPoint( aDC.DeviceToLogicalX( clipBox.x ),
aDC.DeviceToLogicalY( clipBox.y ) ) );
m_ClipBox.SetSize( wxSize( aDC.DeviceToLogicalXRel( clipBox.width ),
aDC.DeviceToLogicalYRel( clipBox.height ) ) );
wxLogTrace( kicadTraceCoords,
wxT( "Device clip box=(%d, %d, %d, %d), Logical clip box=(%d, %d, %d, %d)" ),
clipBox.x, clipBox.y, clipBox.width, clipBox.height,
m_ClipBox.GetX(), m_ClipBox.GetY(), m_ClipBox.GetWidth(), m_ClipBox.GetHeight() );
}
void EDA_DRAW_FRAME::AdjustScrollBars( const wxPoint& aCenterPositionIU )
{
BASE_SCREEN* screen = GetScreen();
if( !screen || !m_canvas )
return;
double scale = screen->GetScalingFactor();
wxLogTrace( traceScrollSettings, wxT( "Center Position = ( %d, %d ), scale = %.10g" ),
aCenterPositionIU.x, aCenterPositionIU.y, scale );
// Calculate the portion of the drawing that can be displayed in the
// client area at the current zoom level.
// visible viewport in device units ~ pixels
wxSize clientSizeDU = m_canvas->GetClientSize();
// Size of the client window in IU
DSIZE clientSizeIU( clientSizeDU.x / scale, clientSizeDU.y / scale );
// Full drawing or "page" rectangle in internal units
DBOX pageRectIU( wxPoint( 0, 0 ), wxSize( GetPageSizeIU().x, GetPageSizeIU().y ) );
// The upper left corner of the client rectangle in internal units.
double xIU = aCenterPositionIU.x - clientSizeIU.x / 2.0;
double yIU = aCenterPositionIU.y - clientSizeIU.y / 2.0;
// If drawn around the center, adjust the client rectangle accordingly.
if( screen->m_Center )
{
// half page offset.
xIU += pageRectIU.GetWidth() / 2.0;
yIU += pageRectIU.GetHeight() / 2.0;
}
DBOX clientRectIU( wxPoint( xIU, yIU ), wxSize( clientSizeIU.x, clientSizeIU.y ) );
wxPoint centerPositionIU;
// put "int" limits on the clientRect
if( clientRectIU.GetLeft() < VIRT_MIN )
clientRectIU.MoveLeftTo( VIRT_MIN );
if( clientRectIU.GetTop() < VIRT_MIN )
clientRectIU.MoveTopTo( VIRT_MIN );
if( clientRectIU.GetRight() > VIRT_MAX )
clientRectIU.MoveRightTo( VIRT_MAX );
if( clientRectIU.GetBottom() > VIRT_MAX )
clientRectIU.MoveBottomTo( VIRT_MAX );
centerPositionIU.x = KiROUND( clientRectIU.GetX() + clientRectIU.GetWidth() / 2 );
centerPositionIU.y = KiROUND( clientRectIU.GetY() + clientRectIU.GetHeight() / 2 );
if( screen->m_Center )
{
centerPositionIU.x -= KiROUND( pageRectIU.GetWidth() / 2.0 );
centerPositionIU.y -= KiROUND( pageRectIU.GetHeight() / 2.0 );
}
DSIZE virtualSizeIU;
if( pageRectIU.GetLeft() < clientRectIU.GetLeft() && pageRectIU.GetRight() > clientRectIU.GetRight() )
{
virtualSizeIU.x = pageRectIU.GetSize().x;
}
else
{
double pageCenterX = pageRectIU.GetX() + ( pageRectIU.GetWidth() / 2 );
double clientCenterX = clientRectIU.GetX() + ( clientRectIU.GetWidth() / 2 );
if( clientRectIU.GetWidth() > pageRectIU.GetWidth() )
{
if( pageCenterX > clientCenterX )
virtualSizeIU.x = ( pageCenterX - clientRectIU.GetLeft() ) * 2;
else if( pageCenterX < clientCenterX )
virtualSizeIU.x = ( clientRectIU.GetRight() - pageCenterX ) * 2;
else
virtualSizeIU.x = clientRectIU.GetWidth();
}
else
{
if( pageCenterX > clientCenterX )
virtualSizeIU.x = pageRectIU.GetWidth() + ( (pageRectIU.GetLeft() - clientRectIU.GetLeft() ) * 2 );
else if( pageCenterX < clientCenterX )
virtualSizeIU.x = pageRectIU.GetWidth() + ( (clientRectIU.GetRight() - pageRectIU.GetRight() ) * 2 );
else
virtualSizeIU.x = pageRectIU.GetWidth();
}
}
if( pageRectIU.GetTop() < clientRectIU.GetTop() && pageRectIU.GetBottom() > clientRectIU.GetBottom() )
{
virtualSizeIU.y = pageRectIU.GetSize().y;
}
else
{
double pageCenterY = pageRectIU.GetY() + ( pageRectIU.GetHeight() / 2 );
double clientCenterY = clientRectIU.GetY() + ( clientRectIU.GetHeight() / 2 );
if( clientRectIU.GetHeight() > pageRectIU.GetHeight() )
{
if( pageCenterY > clientCenterY )
virtualSizeIU.y = ( pageCenterY - clientRectIU.GetTop() ) * 2;
else if( pageCenterY < clientCenterY )
virtualSizeIU.y = ( clientRectIU.GetBottom() - pageCenterY ) * 2;
else
virtualSizeIU.y = clientRectIU.GetHeight();
}
else
{
if( pageCenterY > clientCenterY )
virtualSizeIU.y = pageRectIU.GetHeight() +
( ( pageRectIU.GetTop() - clientRectIU.GetTop() ) * 2 );
else if( pageCenterY < clientCenterY )
virtualSizeIU.y = pageRectIU.GetHeight() +
( ( clientRectIU.GetBottom() - pageRectIU.GetBottom() ) * 2 );
else
virtualSizeIU.y = pageRectIU.GetHeight();
}
}
// put "int" limits on the virtualSizeIU
virtualSizeIU.x = std::min( virtualSizeIU.x, MAX_AXIS );
virtualSizeIU.y = std::min( virtualSizeIU.y, MAX_AXIS );
if( screen->m_Center )
{
screen->m_DrawOrg.x = -KiROUND( virtualSizeIU.x / 2.0 );
screen->m_DrawOrg.y = -KiROUND( virtualSizeIU.y / 2.0 );
}
else
{
screen->m_DrawOrg.x = -KiROUND( ( virtualSizeIU.x - pageRectIU.GetWidth() ) / 2.0 );
screen->m_DrawOrg.y = -KiROUND( ( virtualSizeIU.y - pageRectIU.GetHeight() ) / 2.0 );
}
/* Always set scrollbar pixels per unit to 1 unless you want the zoom
* around cursor to jump around. This reported problem occurs when the
* zoom point is not on a pixel per unit increment. If you set the
* pixels per unit to 10, you have potential for the zoom point to
* jump around +/-5 pixels from the nearest grid point.
*/
screen->m_ScrollPixelsPerUnitX = screen->m_ScrollPixelsPerUnitY = 1;
// Number of scroll bar units for the given zoom level in device units.
double unitsX = virtualSizeIU.x * scale;
double unitsY = virtualSizeIU.y * scale;
// Calculate the scroll bar position in internal units to place the
// center position at the center of client rectangle.
SetScrollCenterPosition( centerPositionIU );
double posX = centerPositionIU.x - clientRectIU.GetWidth() / 2.0 - screen->m_DrawOrg.x;
double posY = centerPositionIU.y - clientRectIU.GetHeight() / 2.0 - screen->m_DrawOrg.y;
// Convert scroll bar position to device units.
posX = KiROUND( posX * scale );
posY = KiROUND( posY * scale );
if( posX < 0 )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar X position %.10g" ), posX );
posX = 0;
}
if( posX > unitsX )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar X position %.10g" ), posX );
posX = unitsX;
}
if( posY < 0 )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar Y position %.10g" ), posY );
posY = 0;
}
if( posY > unitsY )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar Y position %.10g" ), posY );
posY = unitsY;
}
screen->m_ScrollbarPos = wxPoint( KiROUND( posX ), KiROUND( posY ) );
screen->m_ScrollbarNumber = wxSize( KiROUND( unitsX ), KiROUND( unitsY ) );
wxLogTrace( traceScrollSettings,
wxT( "Drawing = (%.10g, %.10g), Client = (%.10g, %.10g), Offset = (%d, %d), SetScrollbars(%d, %d, %d, %d, %d, %d)" ),
virtualSizeIU.x, virtualSizeIU.y, clientSizeIU.x, clientSizeIU.y,
screen->m_DrawOrg.x, screen->m_DrawOrg.y,
screen->m_ScrollPixelsPerUnitX, screen->m_ScrollPixelsPerUnitY,
screen->m_ScrollbarNumber.x, screen->m_ScrollbarNumber.y,
screen->m_ScrollbarPos.x, screen->m_ScrollbarPos.y );
bool noRefresh = true;
m_canvas->SetScrollbars( screen->m_ScrollPixelsPerUnitX,
screen->m_ScrollPixelsPerUnitY,
screen->m_ScrollbarNumber.x,
screen->m_ScrollbarNumber.y,
screen->m_ScrollbarPos.x,
screen->m_ScrollbarPos.y, noRefresh );
}
