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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: statbox.cpp | |
3 | // Purpose: wxStaticBox | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart and Markus Holzem | |
9 | // Licence: wxWindows license | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "statbox.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __BORLANDC__ | |
20 | #pragma hdrstop | |
21 | #endif | |
22 | ||
23 | #include "wx/window.h" | |
24 | #include "wx/msw/private.h" | |
25 | ||
26 | #ifndef WX_PRECOMP | |
27 | #include "wx/app.h" | |
28 | #include "wx/dcclient.h" | |
29 | #endif | |
30 | ||
31 | #include "wx/statbox.h" | |
32 | ||
33 | #if !USE_SHARED_LIBRARY | |
34 | IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl) | |
35 | ||
36 | BEGIN_EVENT_TABLE(wxStaticBox, wxControl) | |
37 | EVT_ERASE_BACKGROUND(wxStaticBox::OnEraseBackground) | |
38 | END_EVENT_TABLE() | |
39 | ||
40 | #endif | |
41 | ||
42 | /* | |
43 | * Group box | |
44 | */ | |
45 | ||
46 | bool wxStaticBox::Create(wxWindow *parent, wxWindowID id, | |
47 | const wxString& label, | |
48 | const wxPoint& pos, | |
49 | const wxSize& size, | |
50 | long style, | |
51 | const wxString& name) | |
52 | { | |
53 | SetName(name); | |
54 | ||
55 | if (parent) parent->AddChild(this); | |
56 | ||
57 | SetBackgroundColour(parent->GetBackgroundColour()) ; | |
58 | SetForegroundColour(parent->GetForegroundColour()) ; | |
59 | ||
60 | if ( id == -1 ) | |
61 | m_windowId = (int)NewControlId(); | |
62 | else | |
63 | m_windowId = id; | |
64 | ||
65 | int x = pos.x; | |
66 | int y = pos.y; | |
67 | int width = size.x; | |
68 | int height = size.y; | |
69 | ||
70 | m_windowStyle = style; | |
71 | ||
72 | long msStyle = BS_GROUPBOX | WS_CHILD | WS_VISIBLE ; // GROUP_FLAGS; | |
73 | ||
74 | bool want3D; | |
75 | WXDWORD exStyle = Determine3DEffects(0, &want3D) ; | |
76 | ||
77 | HWND wx_button = | |
78 | CreateWindowEx(exStyle, T("BUTTON"), (const wxChar *)label, msStyle, | |
79 | 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, | |
80 | wxGetInstance(), NULL); | |
81 | #if wxUSE_CTL3D | |
82 | if (want3D) | |
83 | { | |
84 | Ctl3dSubclassCtl(wx_button); | |
85 | m_useCtl3D = TRUE; | |
86 | } | |
87 | #endif | |
88 | ||
89 | m_hWnd = (WXHWND)wx_button; | |
90 | ||
91 | // Subclass again for purposes of dialog editing mode | |
92 | SubclassWin(GetHWND()); | |
93 | ||
94 | SetFont(parent->GetFont()); | |
95 | ||
96 | SetSize(x, y, width, height); | |
97 | ShowWindow(wx_button, SW_SHOW); | |
98 | ||
99 | return TRUE; | |
100 | } | |
101 | ||
102 | wxSize wxStaticBox::DoGetBestSize() | |
103 | { | |
104 | int cx, cy; | |
105 | wxGetCharSize(GetHWND(), &cx, &cy, &GetFont()); | |
106 | ||
107 | int wBox; | |
108 | GetTextExtent(wxGetWindowText(m_hWnd), &wBox, &cy); | |
109 | ||
110 | wBox += 3*cx; | |
111 | int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy); | |
112 | ||
113 | return wxSize(wBox, hBox); | |
114 | } | |
115 | ||
116 | WXHBRUSH wxStaticBox::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor, | |
117 | WXUINT message, | |
118 | WXWPARAM wParam, | |
119 | WXLPARAM lParam) | |
120 | { | |
121 | #if wxUSE_CTL3D | |
122 | if ( m_useCtl3D ) | |
123 | { | |
124 | HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam); | |
125 | return (WXHBRUSH) hbrush; | |
126 | } | |
127 | #endif | |
128 | ||
129 | if (GetParent()->GetTransparentBackground()) | |
130 | SetBkMode((HDC) pDC, TRANSPARENT); | |
131 | else | |
132 | SetBkMode((HDC) pDC, OPAQUE); | |
133 | ||
134 | ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue())); | |
135 | ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue())); | |
136 | ||
137 | wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID); | |
138 | ||
139 | // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush | |
140 | // has a zero usage count. | |
141 | // backgroundBrush->RealizeResource(); | |
142 | return (WXHBRUSH) backgroundBrush->GetResourceHandle(); | |
143 | } | |
144 | ||
145 | // Shouldn't erase the whole window, since the static box must only paint its | |
146 | // outline. | |
147 | void wxStaticBox::OnEraseBackground(wxEraseEvent& event) | |
148 | { | |
149 | // If we don't have this (call Default()), we don't paint the background properly. | |
150 | // If we do have this, we seem to overwrite enclosed controls. | |
151 | // Is it the WS_CLIPCHILDREN style that's causing the problems? | |
152 | // Probably - without this style, the background of the window will show through, | |
153 | // so the control doesn't have to paint it. The window background will always be | |
154 | // painted before all other controls, therefore there are no problems with | |
155 | // controls being hidden by the static box. | |
156 | // So, if we could specify wxCLIP_CHILDREN in window, or not, we could optimise painting better. | |
157 | // We would assume wxCLIP_CHILDREN in a frame and a scrolled window, but not in a panel. | |
158 | // Is this too platform-specific?? What else can we do? Not a lot, since we have to pass | |
159 | // this information from arbitrary wxWindow derivatives, and it depends on what you wish to | |
160 | // do with the windows. | |
161 | // Alternatively, just make sure that wxStaticBox is always at the back! There are probably | |
162 | // few other circumstances where it matters about child clipping. But what about painting onto | |
163 | // to panel, inside a groupbox? Doesn't appear, because the box wipes it out. | |
164 | wxWindow *parent = GetParent(); | |
165 | if ( parent && parent->GetHWND() && (::GetWindowLong((HWND) parent->GetHWND(), GWL_STYLE) & WS_CLIPCHILDREN) ) | |
166 | { | |
167 | // TODO: May in fact need to generate a paint event for inside this | |
168 | // control's rectangle, otherwise all controls are going to be clipped - | |
169 | // ugh. | |
170 | HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue())); | |
171 | int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT); | |
172 | ||
173 | RECT rect; | |
174 | ||
175 | ::GetClientRect(GetHwnd(), &rect); | |
176 | ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush); | |
177 | ::DeleteObject(hBrush); | |
178 | ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode); | |
179 | } | |
180 | else | |
181 | { | |
182 | event.Skip(); | |
183 | } | |
184 | } | |
185 | ||
186 | long wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) | |
187 | { | |
188 | if ( nMsg == WM_NCHITTEST) | |
189 | { | |
190 | int xPos = LOWORD(lParam); // horizontal position of cursor | |
191 | int yPos = HIWORD(lParam); // vertical position of cursor | |
192 | ||
193 | ScreenToClient(&xPos, &yPos); | |
194 | ||
195 | // Make sure you can drag by the top of the groupbox, but let | |
196 | // other (enclosed) controls get mouse events also | |
197 | if (yPos < 10) | |
198 | return (long)HTCLIENT; | |
199 | } | |
200 | ||
201 | return wxControl::MSWWindowProc(nMsg, wParam, lParam); | |
202 | } | |
203 |