119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/osx/core/dcmemory.cpp
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// Purpose: wxMemoryDC class
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// Author: Stefan Csomor
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// Modified by:
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// Created: 01/02/97
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// Copyright: (c) Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/wxprec.h"
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#include "wx/dcmemory.h"
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#include "wx/graphics.h"
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#include "wx/osx/dcmemory.h"
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#include "wx/osx/private.h"
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//-----------------------------------------------------------------------------
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// wxMemoryDCImpl
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//-----------------------------------------------------------------------------
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wxIMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxPaintDCImpl);
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wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner )
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: wxPaintDCImpl( owner )
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{
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Init();
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}
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wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap )
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: wxPaintDCImpl( owner )
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{
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Init();
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DoSelect(bitmap);
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}
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wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC * WXUNUSED(dc) )
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: wxPaintDCImpl( owner )
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{
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Init();
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}
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void wxMemoryDCImpl::Init()
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{
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m_ok = true;
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SetBackground(*wxWHITE_BRUSH);
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SetBrush(*wxWHITE_BRUSH);
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SetPen(*wxBLACK_PEN);
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SetFont(*wxNORMAL_FONT);
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m_ok = false;
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}
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wxMemoryDCImpl::~wxMemoryDCImpl()
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{
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if ( m_selected.IsOk() )
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{
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m_selected.SetSelectedInto(NULL);
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wxDELETE(m_graphicContext);
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}
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}
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void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
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{
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if ( m_selected.IsOk() )
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{
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m_selected.SetSelectedInto(NULL);
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wxDELETE(m_graphicContext);
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}
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m_selected = bitmap;
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if (m_selected.IsOk())
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{
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wxASSERT_MSG( !bitmap.GetSelectedInto() ||
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(bitmap.GetSelectedInto() == GetOwner()),
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"Bitmap is selected in another wxMemoryDC, delete the first wxMemoryDC or use SelectObject(NULL)" );
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m_selected.SetSelectedInto(GetOwner());
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m_width = bitmap.GetScaledWidth();
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m_height = bitmap.GetScaledHeight();
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m_contentScaleFactor = bitmap.GetScaleFactor();
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CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
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CGContextRef bmCtx = (CGContextRef) m_selected.GetHBITMAP();
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if ( bmCtx )
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{
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CGContextSetFillColorSpace( bmCtx, genericColorSpace );
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CGContextSetStrokeColorSpace( bmCtx, genericColorSpace );
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SetGraphicsContext( wxGraphicsContext::CreateFromNative( bmCtx ) );
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if (m_graphicContext)
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m_graphicContext->EnableOffset(m_contentScaleFactor <= 1);
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}
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m_ok = (m_graphicContext != NULL) ;
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}
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else
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{
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m_ok = false;
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}
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}
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void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
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{
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if (m_selected.IsOk())
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{
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if (width)
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(*width) = m_selected.GetScaledWidth();
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if (height)
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(*height) = m_selected.GetScaledHeight();
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}
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else
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{
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if (width)
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(*width) = 0;
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if (height)
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(*height) = 0;
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}
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}
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