| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/gtk/dcmemory.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // RCS-ID: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | // For compilers that support precompilation, includes "wx.h". |
| 11 | #include "wx/wxprec.h" |
| 12 | |
| 13 | #include "wx/dcmemory.h" |
| 14 | #include "wx/gtk/dcmemory.h" |
| 15 | |
| 16 | #include <gdk/gdk.h> |
| 17 | #include <gtk/gtk.h> |
| 18 | |
| 19 | //----------------------------------------------------------------------------- |
| 20 | // wxMemoryDCImpl |
| 21 | //----------------------------------------------------------------------------- |
| 22 | |
| 23 | IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl) |
| 24 | |
| 25 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner ) |
| 26 | : wxWindowDCImpl( owner ) |
| 27 | { |
| 28 | Init(); |
| 29 | } |
| 30 | |
| 31 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap) |
| 32 | : wxWindowDCImpl( owner ) |
| 33 | { |
| 34 | Init(); |
| 35 | DoSelect(bitmap); |
| 36 | } |
| 37 | |
| 38 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *WXUNUSED(dc) ) |
| 39 | : wxWindowDCImpl( owner ) |
| 40 | { |
| 41 | Init(); |
| 42 | } |
| 43 | |
| 44 | wxMemoryDCImpl::~wxMemoryDCImpl() |
| 45 | { |
| 46 | g_object_unref(m_context); |
| 47 | } |
| 48 | |
| 49 | void wxMemoryDCImpl::Init() |
| 50 | { |
| 51 | m_ok = false; |
| 52 | |
| 53 | m_cmap = gtk_widget_get_default_colormap(); |
| 54 | |
| 55 | m_context = gdk_pango_context_get(); |
| 56 | // Note: The Sun customised version of Pango shipping with Solaris 10 |
| 57 | // crashes if the language is left NULL (see bug 1374114) |
| 58 | pango_context_set_language( m_context, gtk_get_default_language() ); |
| 59 | m_layout = pango_layout_new( m_context ); |
| 60 | m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) ); |
| 61 | } |
| 62 | |
| 63 | void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap ) |
| 64 | { |
| 65 | Destroy(); |
| 66 | |
| 67 | m_selected = bitmap; |
| 68 | if (m_selected.Ok()) |
| 69 | { |
| 70 | m_gdkwindow = m_selected.GetPixmap(); |
| 71 | |
| 72 | m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap); |
| 73 | |
| 74 | SetUpDC( true ); |
| 75 | } |
| 76 | else |
| 77 | { |
| 78 | m_ok = false; |
| 79 | m_gdkwindow = NULL; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | void wxMemoryDCImpl::SetPen( const wxPen& penOrig ) |
| 84 | { |
| 85 | wxPen pen( penOrig ); |
| 86 | if ( m_selected.Ok() && |
| 87 | m_selected.GetDepth() == 1 && |
| 88 | (pen != *wxTRANSPARENT_PEN) ) |
| 89 | { |
| 90 | pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); |
| 91 | } |
| 92 | |
| 93 | wxWindowDCImpl::SetPen( pen ); |
| 94 | } |
| 95 | |
| 96 | void wxMemoryDCImpl::SetBrush( const wxBrush& brushOrig ) |
| 97 | { |
| 98 | wxBrush brush( brushOrig ); |
| 99 | if ( m_selected.Ok() && |
| 100 | m_selected.GetDepth() == 1 && |
| 101 | (brush != *wxTRANSPARENT_BRUSH) ) |
| 102 | { |
| 103 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE); |
| 104 | } |
| 105 | |
| 106 | wxWindowDCImpl::SetBrush( brush ); |
| 107 | } |
| 108 | |
| 109 | void wxMemoryDCImpl::SetBackground( const wxBrush& brushOrig ) |
| 110 | { |
| 111 | wxBrush brush(brushOrig); |
| 112 | |
| 113 | if ( m_selected.Ok() && |
| 114 | m_selected.GetDepth() == 1 && |
| 115 | (brush != *wxTRANSPARENT_BRUSH) ) |
| 116 | { |
| 117 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); |
| 118 | } |
| 119 | |
| 120 | wxWindowDCImpl::SetBackground( brush ); |
| 121 | } |
| 122 | |
| 123 | void wxMemoryDCImpl::SetTextForeground( const wxColour& col ) |
| 124 | { |
| 125 | if ( m_selected.Ok() && m_selected.GetDepth() == 1 ) |
| 126 | wxWindowDCImpl::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE); |
| 127 | else |
| 128 | wxWindowDCImpl::SetTextForeground( col ); |
| 129 | } |
| 130 | |
| 131 | void wxMemoryDCImpl::SetTextBackground( const wxColour &col ) |
| 132 | { |
| 133 | if (m_selected.Ok() && m_selected.GetDepth() == 1) |
| 134 | wxWindowDCImpl::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE ); |
| 135 | else |
| 136 | wxWindowDCImpl::SetTextBackground( col ); |
| 137 | } |
| 138 | |
| 139 | void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const |
| 140 | { |
| 141 | if (m_selected.Ok()) |
| 142 | { |
| 143 | if (width) (*width) = m_selected.GetWidth(); |
| 144 | if (height) (*height) = m_selected.GetHeight(); |
| 145 | } |
| 146 | else |
| 147 | { |
| 148 | if (width) (*width) = 0; |
| 149 | if (height) (*height) = 0; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | wxBitmap wxMemoryDCImpl::DoGetAsBitmap(const wxRect *subrect) const |
| 154 | { |
| 155 | wxBitmap bmp = GetSelectedBitmap(); |
| 156 | return subrect ? bmp.GetSubBitmap(*subrect) : bmp; |
| 157 | } |
| 158 | |
| 159 | const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const |
| 160 | { |
| 161 | return m_selected; |
| 162 | } |
| 163 | |
| 164 | wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() |
| 165 | { |
| 166 | return m_selected; |
| 167 | } |
| 168 | |