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DWG Viewer - Change layout background color
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The DWG Viewer uses a native method -(void)SetBackgroundColor:(Colors) color to change the background color of the active model or sheet. The offered color indexes are linked to a button. The native method is called when the button is tapped. The native method -(void)SetBackgroundColor:(Colors) color manipulates the C++ part of the application.
File: CFxNativeConnection.mm
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-(void)SetBackgroundColor:(Colors)color
{
ODCOLORREF background = 0;
switch ( color )
{
case BLACK:
background = 0;
break;
case WHITE:
background = ODRGB( 255, 255, 255 );
break;
case MAGENTA:
background = ODRGB( 255, 0, 255 );
break;
}
OdEditorImplPtr pEditor = odedEditor();
pEditor->fire_modelessOperationWillStart( L"BACKGROUND_COLOR" );
ACTIVE_DOCUMENT()->GetFxDisplayDevice()->SetBackground( background );
CFxDisplayDevicePtr pDevice = ACTIVE_DOCUMENT()->GetFxDisplayDevice();
for ( int i = 0; i < pDevice->numViews(); i++ )
{
OdGsView *pView = pDevice->viewAt(i );
if ( pView->isVisible() )
pView->invalidate();
}
pEditor->fire_modelessOperationEnded( L"BACKGROUND_COLOR" );
} |
File: ViewController.m
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- (IBAction)onBlackBackgroundPressed:(id)sender
{
[[CFxNativeConnection GetNativeConnection] SetBackgroundColor:BLACK];
}
- (IBAction)onWhiteBackgroundPressed:(id)sender
{
[[CFxNativeConnection GetNativeConnection] SetBackgroundColor:WHITE];
}
- (IBAction)onMagentaBackgroundPressed:(id)sender
{
[[CFxNativeConnection GetNativeConnection] SetBackgroundColor:MAGENTA];
} |