| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/msw/subwin.h |
| 3 | // Purpose: helper for implementing the controls with subwindows |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 2004-12-11 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2004 Vadim Zeitlin <vadim@wxwindows.org> |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifndef _WX_MSW_SUBWIN_H_ |
| 13 | #define _WX_MSW_SUBWIN_H_ |
| 14 | |
| 15 | #include "wx/msw/private.h" |
| 16 | |
| 17 | // ---------------------------------------------------------------------------- |
| 18 | // wxSubwindows contains all HWNDs making part of a single wx control |
| 19 | // ---------------------------------------------------------------------------- |
| 20 | |
| 21 | class WXDLLIMPEXP_CORE wxSubwindows |
| 22 | { |
| 23 | public: |
| 24 | // the number of subwindows can be specified either as parameter to ctor or |
| 25 | // later in Create() |
| 26 | wxSubwindows(size_t n = 0) { Init(); if ( n ) Create(n); } |
| 27 | |
| 28 | // allocate enough space for the given number of windows |
| 29 | void Create(size_t n) |
| 30 | { |
| 31 | wxASSERT_MSG( !m_hwnds, wxT("Create() called twice?") ); |
| 32 | |
| 33 | m_count = n; |
| 34 | m_hwnds = (HWND *)calloc(n, sizeof(HWND)); |
| 35 | m_ids = new wxWindowIDRef[n]; |
| 36 | } |
| 37 | |
| 38 | // non-virtual dtor, this class is not supposed to be used polymorphically |
| 39 | ~wxSubwindows() |
| 40 | { |
| 41 | for ( size_t n = 0; n < m_count; n++ ) |
| 42 | { |
| 43 | if ( m_hwnds[n] ) |
| 44 | ::DestroyWindow(m_hwnds[n]); |
| 45 | } |
| 46 | |
| 47 | free(m_hwnds); |
| 48 | delete [] m_ids; |
| 49 | } |
| 50 | |
| 51 | // get the number of subwindows |
| 52 | size_t GetCount() const { return m_count; } |
| 53 | |
| 54 | // access a given window |
| 55 | HWND& Get(size_t n) |
| 56 | { |
| 57 | wxASSERT_MSG( n < m_count, wxT("subwindow index out of range") ); |
| 58 | |
| 59 | return m_hwnds[n]; |
| 60 | } |
| 61 | |
| 62 | HWND operator[](size_t n) const |
| 63 | { |
| 64 | return const_cast<wxSubwindows *>(this)->Get(n); |
| 65 | } |
| 66 | |
| 67 | // initialize the given window: id will be stored in wxWindowIDRef ensuring |
| 68 | // that it is not reused while this object exists |
| 69 | void Set(size_t n, HWND hwnd, wxWindowID id) |
| 70 | { |
| 71 | wxASSERT_MSG( n < m_count, wxT("subwindow index out of range") ); |
| 72 | |
| 73 | m_hwnds[n] = hwnd; |
| 74 | m_ids[n] = id; |
| 75 | } |
| 76 | |
| 77 | // check if we have this window |
| 78 | bool HasWindow(HWND hwnd) |
| 79 | { |
| 80 | for ( size_t n = 0; n < m_count; n++ ) |
| 81 | { |
| 82 | if ( m_hwnds[n] == hwnd ) |
| 83 | return true; |
| 84 | } |
| 85 | |
| 86 | return false; |
| 87 | } |
| 88 | |
| 89 | |
| 90 | // methods which are forwarded to all subwindows |
| 91 | // --------------------------------------------- |
| 92 | |
| 93 | // show/hide everything |
| 94 | void Show(bool show) |
| 95 | { |
| 96 | int sw = show ? SW_SHOW : SW_HIDE; |
| 97 | for ( size_t n = 0; n < m_count; n++ ) |
| 98 | { |
| 99 | if ( m_hwnds[n] ) |
| 100 | ::ShowWindow(m_hwnds[n], sw); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | // enable/disable everything |
| 105 | void Enable(bool enable) |
| 106 | { |
| 107 | for ( size_t n = 0; n < m_count; n++ ) |
| 108 | { |
| 109 | if ( m_hwnds[n] ) |
| 110 | ::EnableWindow(m_hwnds[n], enable); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | // set font for all windows |
| 115 | void SetFont(const wxFont& font) |
| 116 | { |
| 117 | HFONT hfont = GetHfontOf(font); |
| 118 | wxCHECK_RET( hfont, wxT("invalid font") ); |
| 119 | |
| 120 | for ( size_t n = 0; n < m_count; n++ ) |
| 121 | { |
| 122 | if ( m_hwnds[n] ) |
| 123 | { |
| 124 | ::SendMessage(m_hwnds[n], WM_SETFONT, (WPARAM)hfont, 0); |
| 125 | |
| 126 | // otherwise the window might not be redrawn correctly |
| 127 | ::InvalidateRect(m_hwnds[n], NULL, FALSE /* don't erase bg */); |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | // find the bounding box for all windows |
| 133 | wxRect GetBoundingBox() const |
| 134 | { |
| 135 | wxRect r; |
| 136 | for ( size_t n = 0; n < m_count; n++ ) |
| 137 | { |
| 138 | if ( m_hwnds[n] ) |
| 139 | { |
| 140 | RECT rc; |
| 141 | |
| 142 | ::GetWindowRect(m_hwnds[n], &rc); |
| 143 | |
| 144 | r.Union(wxRectFromRECT(rc)); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | return r; |
| 149 | } |
| 150 | |
| 151 | private: |
| 152 | void Init() |
| 153 | { |
| 154 | m_count = 0; |
| 155 | m_hwnds = NULL; |
| 156 | } |
| 157 | |
| 158 | // number of elements in m_hwnds array |
| 159 | size_t m_count; |
| 160 | |
| 161 | // the HWNDs we contain |
| 162 | HWND *m_hwnds; |
| 163 | |
| 164 | // the IDs of the windows |
| 165 | wxWindowIDRef *m_ids; |
| 166 | |
| 167 | |
| 168 | wxDECLARE_NO_COPY_CLASS(wxSubwindows); |
| 169 | }; |
| 170 | |
| 171 | // convenient macro to forward a few methods which are usually propagated to |
| 172 | // subwindows to a wxSubwindows object |
| 173 | // |
| 174 | // parameters should be: |
| 175 | // - cname the name of the class implementing these methods |
| 176 | // - base the name of its base class |
| 177 | // - subwins the name of the member variable of type wxSubwindows * |
| 178 | #define WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(cname, base, subwins) \ |
| 179 | bool cname::ContainsHWND(WXHWND hWnd) const \ |
| 180 | { \ |
| 181 | return subwins && subwins->HasWindow((HWND)hWnd); \ |
| 182 | } \ |
| 183 | \ |
| 184 | bool cname::Show(bool show) \ |
| 185 | { \ |
| 186 | if ( !base::Show(show) ) \ |
| 187 | return false; \ |
| 188 | \ |
| 189 | if ( subwins ) \ |
| 190 | subwins->Show(show); \ |
| 191 | \ |
| 192 | return true; \ |
| 193 | } \ |
| 194 | \ |
| 195 | bool cname::Enable(bool enable) \ |
| 196 | { \ |
| 197 | if ( !base::Enable(enable) ) \ |
| 198 | return false; \ |
| 199 | \ |
| 200 | if ( subwins ) \ |
| 201 | subwins->Enable(enable); \ |
| 202 | \ |
| 203 | return true; \ |
| 204 | } \ |
| 205 | \ |
| 206 | bool cname::SetFont(const wxFont& font) \ |
| 207 | { \ |
| 208 | if ( !base::SetFont(font) ) \ |
| 209 | return false; \ |
| 210 | \ |
| 211 | if ( subwins ) \ |
| 212 | subwins->SetFont(font); \ |
| 213 | \ |
| 214 | return true; \ |
| 215 | } |
| 216 | |
| 217 | |
| 218 | #endif // _WX_MSW_SUBWIN_H_ |
| 219 | |