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avoiding nesting dcs on the same window concurrently
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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/mgl/toplevel.cpp
3 // Purpose:
4 // Author: Vaclav Slavik
5 // Id: $Id$
6 // Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __BORLANDC__
14 #pragma hdrstop
15 #endif
16
17 // ============================================================================
18 // declarations
19 // ============================================================================
20
21 // ----------------------------------------------------------------------------
22 // headers
23 // ----------------------------------------------------------------------------
24
25 #include "wx/toplevel.h"
26
27 #ifndef WX_PRECOMP
28 #include "wx/app.h"
29 #endif // WX_PRECOMP
30
31 #include "wx/mgl/private.h"
32
33 // ----------------------------------------------------------------------------
34 // idle system
35 // ----------------------------------------------------------------------------
36
37 extern int g_openDialogs;
38
39 // ----------------------------------------------------------------------------
40 // event tables
41 // ----------------------------------------------------------------------------
42
43 #ifndef __WXUNIVERSAL__
44 IMPLEMENT_DYNAMIC_CLASS(wxTopLevelWindow, wxWindow)
45 #endif
46
47
48 // ============================================================================
49 // implementation
50 // ============================================================================
51
52 void wxTopLevelWindowMGL::Init()
53 {
54 m_isShown = false;
55 m_isIconized = false;
56 m_isMaximized = false;
57 m_fsIsShowing = false;
58 m_sizeSet = false;
59 }
60
61 bool wxTopLevelWindowMGL::Create(wxWindow *parent,
62 wxWindowID id,
63 const wxString& title,
64 const wxPoint& posOrig,
65 const wxSize& sizeOrig,
66 long style,
67 const wxString &name)
68 {
69 // always create a frame of some reasonable, even if arbitrary, size (at
70 // least for MSW compatibility)
71 wxSize size = sizeOrig;
72 if ( size.x == wxDefaultCoord || size.y == wxDefaultCoord )
73 {
74 wxSize sizeDefault = GetDefaultSize();
75 if ( size.x == wxDefaultCoord )
76 size.x = sizeDefault.x;
77 if ( size.y == wxDefaultCoord )
78 size.y = sizeDefault.y;
79 }
80
81 // for default positioning, centre the first top level window and
82 // cascade any addtional ones from there.
83 wxPoint pos = posOrig;
84 if ( pos.x == wxDefaultCoord || pos.y == wxDefaultCoord )
85 {
86 wxSize sizeDisplay = wxGetDisplaySize();
87 static wxPoint nextPos((sizeDisplay.x - size.x) / 2,
88 (sizeDisplay.y - size.y) / 2);
89
90 if ( pos.x == wxDefaultCoord )
91 pos.x = nextPos.x;
92 if ( pos.y == wxDefaultCoord )
93 pos.y = nextPos.y;
94 if ( pos.x + size.x > sizeDisplay.x || pos.y + size.y > sizeDisplay.y )
95 pos = wxPoint();
96
97 const wxSize cascadeOffset(16, 20);
98 nextPos = pos + cascadeOffset;
99 }
100
101 wxWindow::Create(NULL, id, pos, size, style, name);
102 SetParent(parent);
103 if ( parent )
104 parent->AddChild(this);
105
106 wxTopLevelWindows.Append(this);
107 m_title = title;
108
109 return true;
110 }
111
112 wxTopLevelWindowMGL::~wxTopLevelWindowMGL()
113 {
114 m_isBeingDeleted = true;
115
116 wxTopLevelWindows.DeleteObject(this);
117
118 if (wxTheApp->GetTopWindow() == this)
119 wxTheApp->SetTopWindow(NULL);
120
121 if (wxTopLevelWindows.IsEmpty() &&
122 wxTheApp->GetExitOnFrameDelete())
123 {
124 wxTheApp->ExitMainLoop();
125 }
126 }
127
128 bool wxTopLevelWindowMGL::ShowFullScreen(bool show, long style)
129 {
130 if (show == m_fsIsShowing) return false; // return what?
131
132 m_fsIsShowing = show;
133
134 if (show)
135 {
136 m_fsSaveStyle = m_windowStyle;
137 m_fsSaveFlag = style;
138 GetPosition(&m_fsSaveFrame.x, &m_fsSaveFrame.y);
139 GetSize(&m_fsSaveFrame.width, &m_fsSaveFrame.height);
140
141 if ( style & wxFULLSCREEN_NOCAPTION )
142 m_windowStyle &= ~wxCAPTION;
143 if ( style & wxFULLSCREEN_NOBORDER )
144 m_windowStyle = wxSIMPLE_BORDER;
145
146 int x, y;
147 wxDisplaySize(&x, &y);
148 SetSize(0, 0, x, y);
149 }
150 else
151 {
152 m_windowStyle = m_fsSaveStyle;
153 SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
154 m_fsSaveFrame.width, m_fsSaveFrame.height);
155 }
156
157 return true;
158 }
159
160 bool wxTopLevelWindowMGL::Show(bool show)
161 {
162 bool ret = wxTopLevelWindowBase::Show(show);
163
164 // If this is the first time Show was called, send size event,
165 // so that the frame can adjust itself (think auto layout or single child)
166 if ( !m_sizeSet )
167 {
168 m_sizeSet = true;
169 wxSizeEvent event(GetSize(), GetId());
170 event.SetEventObject(this);
171 GetEventHandler()->ProcessEvent(event);
172 }
173
174 if ( ret && show && AcceptsFocus() )
175 SetFocus();
176 // FIXME_MGL -- don't do this for popup windows?
177 return ret;
178 }
179
180 void wxTopLevelWindowMGL::Maximize(bool maximize)
181 {
182 int x, y, w, h;
183 wxClientDisplayRect(&x, &y, &w, &h);
184
185 rect_t screenRect = MGL_defRect(x, y, w, h);
186 MGL_wmInvalidateRect(g_winMng, &screenRect);
187
188 if ( maximize && !m_isMaximized )
189 {
190 m_isMaximized = true;
191
192 GetPosition(&m_savedFrame.x, &m_savedFrame.y);
193 GetSize(&m_savedFrame.width, &m_savedFrame.height);
194
195 SetSize(x, y, w, h);
196 }
197 else if ( !maximize && m_isMaximized )
198 {
199 m_isMaximized = false;
200 SetSize(m_savedFrame.x, m_savedFrame.y,
201 m_savedFrame.width, m_savedFrame.height);
202 }
203 }
204
205 bool wxTopLevelWindowMGL::IsMaximized() const
206 {
207 return m_isMaximized;
208 }
209
210 void wxTopLevelWindowMGL::Restore()
211 {
212 if ( IsIconized() )
213 {
214 Iconize(false);
215 }
216 if ( IsMaximized() )
217 {
218 Maximize(false);
219 }
220 }
221
222 void wxTopLevelWindowMGL::Iconize(bool WXUNUSED(iconize))
223 {
224 wxFAIL_MSG(wxT("Iconize not supported under wxMGL"));
225 // FIXME_MGL - Iconize is not supported in fullscreen mode.
226 // It will be supported in windowed mode (if ever implemented in MGL...)
227 }
228
229 bool wxTopLevelWindowMGL::IsIconized() const
230 {
231 return m_isIconized;
232 }