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: subwin.h 30981 2004-12-13 01:02:32Z VZ $ 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 21class WXDLLEXPORT wxSubwindows 22{ 23public: 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, _T("Create() called twice?") ); 32 33 m_count = n; 34 m_hwnds = (HWND *)calloc(n, sizeof(HWND)); 35 } 36 37 // non-virtual dtor, this class is not supposed to be used polymorphically 38 ~wxSubwindows() 39 { 40 for ( size_t n = 0; n < m_count; n++ ) 41 { 42 ::DestroyWindow(m_hwnds[n]); 43 } 44 45 free(m_hwnds); 46 } 47 48 // get the number of subwindows 49 size_t GetCount() const { return m_count; } 50 51 // access a given window 52 HWND& Get(size_t n) 53 { 54 wxASSERT_MSG( n < m_count, _T("subwindow index out of range") ); 55 56 return m_hwnds[n]; 57 } 58 59 HWND& operator[](size_t n) { return Get(n); } 60 HWND operator[](size_t n) const 61 { 62 return wx_const_cast(wxSubwindows *, this)->Get(n); 63 } 64 65 // check if we have this window 66 bool HasWindow(HWND hwnd) 67 { 68 for ( size_t n = 0; n < m_count; n++ ) 69 { 70 if ( m_hwnds[n] == hwnd ) 71 return true; 72 } 73 74 return false; 75 } 76 77 78 // methods which are forwarded to all subwindows 79 // --------------------------------------------- 80 81 // show/hide everything 82 void Show(bool show) 83 { 84 int sw = show ? SW_SHOW : SW_HIDE; 85 for ( size_t n = 0; n < m_count; n++ ) 86 { 87 ::ShowWindow(m_hwnds[n], sw); 88 } 89 } 90 91 // enable/disable everything 92 void Enable(bool enable) 93 { 94 for ( size_t n = 0; n < m_count; n++ ) 95 { 96 ::EnableWindow(m_hwnds[n], enable); 97 } 98 } 99 100 // set font for all windows 101 void SetFont(const wxFont& font) 102 { 103 HFONT hfont = GetHfontOf(font); 104 wxCHECK_RET( hfont, _T("invalid font") ); 105 106 for ( size_t n = 0; n < m_count; n++ ) 107 { 108 ::SendMessage(m_hwnds[n], WM_SETFONT, (WPARAM)hfont, 0); 109 110 // otherwise the window might not be redrawn correctly 111 ::InvalidateRect(m_hwnds[n], NULL, FALSE /* don't erase bg */); 112 } 113 } 114 115 // find the bounding box for all windows 116 wxRect GetBoundingBox() const 117 { 118 wxRect r; 119 for ( size_t n = 0; n < m_count; n++ ) 120 { 121 RECT rc; 122 ::GetWindowRect(m_hwnds[n], &rc); 123 124 r.Union(wxRectFromRECT(rc)); 125 } 126 127 return r; 128 } 129 130private: 131 void Init() 132 { 133 m_count = 0; 134 m_hwnds = NULL; 135 } 136 137 // number of elements in m_hwnds array 138 size_t m_count; 139 140 // the HWNDs we contain 141 HWND *m_hwnds; 142 143 144 DECLARE_NO_COPY_CLASS(wxSubwindows) 145}; 146 147// convenient macro to forward a few methods which are usually propagated to 148// subwindows to a wxSubwindows object 149// 150// parameters should be: 151// - cname the name of the class implementing these methods 152// - base the name of its base class 153// - subwins the name of the member variable of type wxSubwindows * 154#define WX_FORWARD_STD_METHODS_TO_SUBWINDOWS(cname, base, subwins) \ 155 bool cname::ContainsHWND(WXHWND hWnd) const \ 156 { \ 157 return subwins && subwins->HasWindow((HWND)hWnd); \ 158 } \ 159 \ 160 bool cname::Show(bool show) \ 161 { \ 162 if ( !base::Show(show) ) \ 163 return false; \ 164 \ 165 if ( subwins ) \ 166 subwins->Show(show); \ 167 \ 168 return true; \ 169 } \ 170 \ 171 bool cname::Enable(bool enable) \ 172 { \ 173 if ( !base::Enable(enable) ) \ 174 return false; \ 175 \ 176 if ( subwins ) \ 177 subwins->Enable(enable); \ 178 \ 179 return true; \ 180 } \ 181 \ 182 bool cname::SetFont(const wxFont& font) \ 183 { \ 184 if ( !base::SetFont(font) ) \ 185 return false; \ 186 \ 187 if ( subwins ) \ 188 subwins->SetFont(font); \ 189 \ 190 return true; \ 191 } 192 193 194#endif // _WX_MSW_SUBWIN_H_ 195 196