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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/gtk/dcmemory.h" | |
14 | ||
15 | #include <gtk/gtk.h> | |
16 | ||
17 | //----------------------------------------------------------------------------- | |
18 | // wxMemoryDCImpl | |
19 | //----------------------------------------------------------------------------- | |
20 | ||
21 | IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl) | |
22 | ||
23 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner ) | |
24 | : wxWindowDCImpl( owner ) | |
25 | { | |
26 | Init(); | |
27 | } | |
28 | ||
29 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap) | |
30 | : wxWindowDCImpl( owner ) | |
31 | { | |
32 | Init(); | |
33 | DoSelect(bitmap); | |
34 | } | |
35 | ||
36 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *WXUNUSED(dc) ) | |
37 | : wxWindowDCImpl( owner ) | |
38 | { | |
39 | Init(); | |
40 | } | |
41 | ||
42 | wxMemoryDCImpl::~wxMemoryDCImpl() | |
43 | { | |
44 | g_object_unref(m_context); | |
45 | } | |
46 | ||
47 | void wxMemoryDCImpl::Init() | |
48 | { | |
49 | m_ok = false; | |
50 | ||
51 | m_cmap = gtk_widget_get_default_colormap(); | |
52 | ||
53 | m_context = gdk_pango_context_get(); | |
54 | // Note: The Sun customised version of Pango shipping with Solaris 10 | |
55 | // crashes if the language is left NULL (see bug 1374114) | |
56 | pango_context_set_language( m_context, gtk_get_default_language() ); | |
57 | m_layout = pango_layout_new( m_context ); | |
58 | m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) ); | |
59 | } | |
60 | ||
61 | void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap ) | |
62 | { | |
63 | Destroy(); | |
64 | ||
65 | m_selected = bitmap; | |
66 | if (m_selected.IsOk()) | |
67 | { | |
68 | m_gdkwindow = m_selected.GetPixmap(); | |
69 | ||
70 | m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap); | |
71 | ||
72 | SetUpDC( true ); | |
73 | } | |
74 | else | |
75 | { | |
76 | m_ok = false; | |
77 | m_gdkwindow = NULL; | |
78 | } | |
79 | } | |
80 | ||
81 | void wxMemoryDCImpl::SetPen( const wxPen& penOrig ) | |
82 | { | |
83 | wxPen pen( penOrig ); | |
84 | if ( m_selected.IsOk() && | |
85 | m_selected.GetDepth() == 1 && | |
86 | (pen != *wxTRANSPARENT_PEN) ) | |
87 | { | |
88 | pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
89 | } | |
90 | ||
91 | wxWindowDCImpl::SetPen( pen ); | |
92 | } | |
93 | ||
94 | void wxMemoryDCImpl::SetBrush( const wxBrush& brushOrig ) | |
95 | { | |
96 | wxBrush brush( brushOrig ); | |
97 | if ( m_selected.IsOk() && | |
98 | m_selected.GetDepth() == 1 && | |
99 | (brush != *wxTRANSPARENT_BRUSH) ) | |
100 | { | |
101 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE); | |
102 | } | |
103 | ||
104 | wxWindowDCImpl::SetBrush( brush ); | |
105 | } | |
106 | ||
107 | void wxMemoryDCImpl::SetBackground( const wxBrush& brushOrig ) | |
108 | { | |
109 | wxBrush brush(brushOrig); | |
110 | ||
111 | if ( m_selected.IsOk() && | |
112 | m_selected.GetDepth() == 1 && | |
113 | (brush != *wxTRANSPARENT_BRUSH) ) | |
114 | { | |
115 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
116 | } | |
117 | ||
118 | wxWindowDCImpl::SetBackground( brush ); | |
119 | } | |
120 | ||
121 | void wxMemoryDCImpl::SetTextForeground( const wxColour& col ) | |
122 | { | |
123 | if ( m_selected.IsOk() && m_selected.GetDepth() == 1 ) | |
124 | wxWindowDCImpl::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE); | |
125 | else | |
126 | wxWindowDCImpl::SetTextForeground( col ); | |
127 | } | |
128 | ||
129 | void wxMemoryDCImpl::SetTextBackground( const wxColour &col ) | |
130 | { | |
131 | if (m_selected.IsOk() && m_selected.GetDepth() == 1) | |
132 | wxWindowDCImpl::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
133 | else | |
134 | wxWindowDCImpl::SetTextBackground( col ); | |
135 | } | |
136 | ||
137 | void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const | |
138 | { | |
139 | if (m_selected.IsOk()) | |
140 | { | |
141 | if (width) (*width) = m_selected.GetWidth(); | |
142 | if (height) (*height) = m_selected.GetHeight(); | |
143 | } | |
144 | else | |
145 | { | |
146 | if (width) (*width) = 0; | |
147 | if (height) (*height) = 0; | |
148 | } | |
149 | } | |
150 | ||
151 | wxBitmap wxMemoryDCImpl::DoGetAsBitmap(const wxRect *subrect) const | |
152 | { | |
153 | wxBitmap bmp = GetSelectedBitmap(); | |
154 | return subrect ? bmp.GetSubBitmap(*subrect) : bmp; | |
155 | } | |
156 | ||
157 | const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const | |
158 | { | |
159 | return m_selected; | |
160 | } | |
161 | ||
162 | wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() | |
163 | { | |
164 | return m_selected; | |
165 | } | |
166 | ||
167 | void* wxMemoryDCImpl::GetHandle() const | |
168 | { | |
169 | const wxBitmap& bmp = GetSelectedBitmap(); | |
170 | return bmp.GetPixmap(); | |
171 | } |