cocoa implementation for overlay
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63937 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
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include/wx/osx/cocoa/private/overlay.h
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include/wx/osx/cocoa/private/overlay.h
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/osx/cocoa/private/overlay.h
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// Purpose: wxOverlayImpl declaration
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// Author: Stefan Csomor
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// Modified by:
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// Created: 2006-10-20
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// RCS-ID: $Id: overlay.h 61724 2009-08-21 10:41:26Z VZ $
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_OSX_COCOA_PRIVATE_OVERLAY_H_
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#define _WX_OSX_COCOA_PRIVATE_OVERLAY_H_
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#include "wx/osx/private.h"
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#include "wx/toplevel.h"
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#include "wx/graphics.h"
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class wxOverlayImpl
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{
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public:
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wxOverlayImpl() ;
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~wxOverlayImpl() ;
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// clears the overlay without restoring the former state
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// to be done eg when the window content has been changed and repainted
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void Reset();
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// returns true if it has been setup
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bool IsOk();
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void Init( wxDC* dc, int x , int y , int width , int height );
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void BeginDrawing( wxDC* dc);
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void EndDrawing( wxDC* dc);
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void Clear( wxDC* dc);
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private:
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void CreateOverlayWindow();
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WXWindow m_overlayWindow;
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WXWindow m_overlayParentWindow;
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CGContextRef m_overlayContext ;
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// we store the window in case we would have to issue a Refresh()
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wxWindow* m_window ;
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int m_x ;
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int m_y ;
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int m_width ;
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int m_height ;
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} ;
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#endif // _WX_MAC_CARBON_PRIVATE_OVERLAY_H_
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193
src/osx/cocoa/overlay.mm
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src/osx/cocoa/overlay.mm
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/////////////////////////////////////////////////////////////////////////////
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// Name: src/osx/cocoa/overlay.mm
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// Purpose: common wxOverlay code
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// Author: Stefan Csomor
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// Modified by:
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// Created: 2006-10-20
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// RCS-ID: $Id: overlay.cpp 55419 2008-09-02 16:53:23Z SC $
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/overlay.h"
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#ifndef WX_PRECOMP
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#include "wx/dcclient.h"
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#endif
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#include "wx/dcgraph.h"
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#include "wx/private/overlay.h"
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#ifdef wxHAS_NATIVE_OVERLAY
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// ============================================================================
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// implementation
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// ============================================================================
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wxOverlayImpl::wxOverlayImpl()
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{
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m_window = NULL ;
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m_overlayContext = NULL ;
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m_overlayWindow = NULL ;
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}
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wxOverlayImpl::~wxOverlayImpl()
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{
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Reset();
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}
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bool wxOverlayImpl::IsOk()
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{
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return m_overlayWindow != NULL ;
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}
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void wxOverlayImpl::CreateOverlayWindow()
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{
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if ( m_window )
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{
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m_overlayParentWindow = m_window->MacGetTopLevelWindowRef();
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[m_overlayParentWindow makeKeyAndOrderFront:nil];
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NSView* view = m_window->GetHandle();
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NSPoint viewOriginBase, viewOriginScreen;
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viewOriginBase = [view convertPoint:NSMakePoint(0, 0) toView:nil];
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viewOriginScreen = [m_overlayParentWindow convertBaseToScreen:viewOriginBase];
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NSSize viewSize = [view frame].size;
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if ( [view isFlipped] )
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viewOriginScreen.y -= viewSize.height;
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m_overlayWindow=[[NSWindow alloc] initWithContentRect:NSMakeRect(viewOriginScreen.x,viewOriginScreen.y,
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viewSize.width,
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viewSize.height)
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styleMask:NSBorderlessWindowMask
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backing:NSBackingStoreBuffered
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defer:YES];
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[m_overlayParentWindow addChildWindow:m_overlayWindow ordered:NSWindowAbove];
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}
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else
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{
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m_overlayParentWindow = NULL ;
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CGRect cgbounds ;
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cgbounds = CGDisplayBounds(CGMainDisplayID());
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m_overlayWindow=[[NSWindow alloc] initWithContentRect:NSMakeRect(cgbounds.origin.x,cgbounds.origin.y,
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cgbounds.size.width,
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cgbounds.size.height)
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styleMask:NSBorderlessWindowMask
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backing:NSBackingStoreBuffered
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defer:YES];
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}
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[m_overlayWindow setOpaque:NO];
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[m_overlayWindow setHasShadow:YES];
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[m_overlayWindow setIgnoresMouseEvents:YES];
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[m_overlayWindow setAlphaValue:0.5];
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[m_overlayWindow orderFront:nil];
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}
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void wxOverlayImpl::Init( wxDC* dc, int x , int y , int width , int height )
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{
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wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") );
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m_window = dc->GetWindow();
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m_x = x ;
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m_y = y ;
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if ( dc->IsKindOf( CLASSINFO( wxClientDC ) ))
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{
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wxPoint origin = m_window->GetClientAreaOrigin();
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m_x += origin.x;
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m_y += origin.y;
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}
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m_width = width ;
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m_height = height ;
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CreateOverlayWindow();
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wxASSERT_MSG( m_overlayWindow != NULL , _("Couldn't create the overlay window") );
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m_overlayContext = (CGContextRef) [[m_overlayWindow graphicsContext] graphicsPort];
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wxASSERT_MSG( m_overlayContext != NULL , _("Couldn't init the context on the overlay window") );
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int ySize = 0;
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if ( m_window )
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{
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NSView* view = m_window->GetHandle();
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NSSize viewSize = [view frame].size;
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ySize = viewSize.height;
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}
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else
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{
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CGRect cgbounds ;
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cgbounds = CGDisplayBounds(CGMainDisplayID());
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ySize = cgbounds.size.height;
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}
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CGContextTranslateCTM( m_overlayContext, 0, ySize );
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CGContextScaleCTM( m_overlayContext, 1, -1 );
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CGContextTranslateCTM( m_overlayContext, -m_x , -m_y );
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}
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void wxOverlayImpl::BeginDrawing( wxDC* dc)
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{
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wxDCImpl *impl = dc->GetImpl();
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wxGCDCImpl *win_impl = wxDynamicCast(impl,wxGCDCImpl);
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if (win_impl)
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{
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win_impl->SetGraphicsContext( wxGraphicsContext::CreateFromNative( m_overlayContext ) );
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dc->SetClippingRegion( m_x , m_y , m_width , m_height ) ;
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}
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}
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void wxOverlayImpl::EndDrawing( wxDC* dc)
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{
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wxDCImpl *impl = dc->GetImpl();
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wxGCDCImpl *win_impl = wxDynamicCast(impl,wxGCDCImpl);
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if (win_impl)
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win_impl->SetGraphicsContext(NULL);
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CGContextFlush( m_overlayContext );
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}
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void wxOverlayImpl::Clear(wxDC* WXUNUSED(dc))
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{
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wxASSERT_MSG( IsOk() , _("You cannot Clear an overlay that is not inited") );
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CGRect box = CGRectMake( m_x - 1, m_y - 1 , m_width + 2 , m_height + 2 );
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CGContextClearRect( m_overlayContext, box );
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}
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void wxOverlayImpl::Reset()
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{
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if ( m_overlayContext )
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{
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m_overlayContext = NULL ;
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}
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// todo : don't dispose, only hide and reposition on next run
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if (m_overlayWindow)
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{
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[m_overlayParentWindow removeChildWindow:m_overlayWindow];
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[m_overlayWindow release];
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m_overlayWindow = NULL ;
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}
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}
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#endif // wxHAS_NATIVE_OVERLAY
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