src/msw/colordlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/colordlg.cpp
   3 // Purpose:     wxColourDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_COLOURDLG && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #include "wx/colordlg.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/msw/wrapcdlg.h"
  33     #include <stdio.h>
  34     #include "wx/colour.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/utils.h"
  37     #include "wx/math.h"
  38 #endif
  39
  40 #include "wx/msw/private.h"
  41
  42 #include <stdlib.h>
  43 #include <string.h>
  44
  45 // ----------------------------------------------------------------------------
  46 // globals
  47 // ----------------------------------------------------------------------------
  48
  49 // standard colors dialog size for the Windows systems
  50 // this is ok if color dialog created with standart color
  51 // and "Define Custom Colors" extension not shown
  52 static wxRect gs_rectDialog(0, 0, 222, 324);
  53
  54 // ----------------------------------------------------------------------------
  55 // wxWin macros
  56 // ----------------------------------------------------------------------------
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxColourDialog, wxDialog)
  59
  60 // ============================================================================
  61 // implementation
  62 // ============================================================================
  63
  64 // ----------------------------------------------------------------------------
  65 // colour dialog hook proc
  66 // ----------------------------------------------------------------------------
  67
  68 UINT_PTR CALLBACK
  69 wxColourDialogHookProc(HWND hwnd,
  70                        UINT uiMsg,
  71                        WPARAM WXUNUSED(wParam),
  72                        LPARAM lParam)
  73 {
  74     if ( uiMsg == WM_INITDIALOG )
  75     {
  76         CHOOSECOLOR *pCC = (CHOOSECOLOR *)lParam;
  77         wxColourDialog * const
  78             dialog = reinterpret_cast<wxColourDialog *>(pCC->lCustData);
  79
  80         const wxString title = dialog->GetTitle();
  81         if ( !title.empty() )
  82             ::SetWindowText(hwnd, title.t_str());
  83
  84         dialog->MSWOnInitDone((WXHWND)hwnd);
  85     }
  86
  87     return 0;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // wxColourDialog
  92 // ----------------------------------------------------------------------------
  93
  94 void wxColourDialog::Init()
  95 {
  96     m_movedWindow = false;
  97     m_centreDir = 0;
  98
  99     // reset to zero, otherwise the wx routines won't size the window the
 100     // second time the dialog is shown, because they would believe it already
 101     // has the requested size/position
 102     gs_rectDialog.x =
 103     gs_rectDialog.y = 0;
 104 }
 105
 106 bool wxColourDialog::Create(wxWindow *parent, wxColourData *data)
 107 {
 108     m_parent = parent;
 109     if (data)
 110         m_colourData = *data;
 111
 112     return true;
 113 }
 114
 115 int wxColourDialog::ShowModal()
 116 {
 117     // initialize the struct used by Windows
 118     CHOOSECOLOR chooseColorStruct;
 119     memset(&chooseColorStruct, 0, sizeof(CHOOSECOLOR));
 120
 121     size_t i;
 122
 123     // and transfer data from m_colourData to it
 124     COLORREF custColours[16];
 125     for ( i = 0; i < WXSIZEOF(custColours); i++ )
 126     {
 127         if ( m_colourData.GetCustomColour(i).IsOk() )
 128             custColours[i] = wxColourToRGB(m_colourData.GetCustomColour(i));
 129         else
 130             custColours[i] = RGB(255,255,255);
 131     }
 132
 133     chooseColorStruct.lStructSize = sizeof(CHOOSECOLOR);
 134     if ( m_parent )
 135         chooseColorStruct.hwndOwner = GetHwndOf(m_parent);
 136     chooseColorStruct.rgbResult = wxColourToRGB(m_colourData.GetColour());
 137     chooseColorStruct.lpCustColors = custColours;
 138
 139     chooseColorStruct.Flags = CC_RGBINIT | CC_ENABLEHOOK;
 140     chooseColorStruct.lCustData = (LPARAM)this;
 141     chooseColorStruct.lpfnHook = wxColourDialogHookProc;
 142
 143     if ( m_colourData.GetChooseFull() )
 144         chooseColorStruct.Flags |= CC_FULLOPEN;
 145
 146     // do show the modal dialog
 147     if ( !::ChooseColor(&chooseColorStruct) )
 148     {
 149         // 0 error means the dialog was simply cancelled, i.e. no real error
 150         // occurred
 151         const DWORD err = CommDlgExtendedError();
 152         if ( err )
 153         {
 154             wxLogError(_("Colour selection dialog failed with error %0lx."), err);
 155         }
 156
 157         return wxID_CANCEL;
 158     }
 159
 160
 161     // transfer the values chosen by user back into m_colourData
 162     for ( i = 0; i < WXSIZEOF(custColours); i++ )
 163     {
 164       wxRGBToColour(m_colourData.m_custColours[i], custColours[i]);
 165     }
 166
 167     wxRGBToColour(m_colourData.GetColour(), chooseColorStruct.rgbResult);
 168
 169     // this doesn't seem to work (contrary to what MSDN implies) on current
 170     // Windows versions: CC_FULLOPEN is never set on return if it wasn't
 171     // initially set and vice versa
 172     //m_colourData.SetChooseFull((chooseColorStruct.Flags & CC_FULLOPEN) != 0);
 173
 174     return wxID_OK;
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // title
 179 // ----------------------------------------------------------------------------
 180
 181 void wxColourDialog::SetTitle(const wxString& title)
 182 {
 183     m_title = title;
 184 }
 185
 186 wxString wxColourDialog::GetTitle() const
 187 {
 188     return m_title;
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // position/size
 193 // ----------------------------------------------------------------------------
 194
 195 void wxColourDialog::DoGetPosition(int *x, int *y) const
 196 {
 197     if ( x )
 198         *x = gs_rectDialog.x;
 199     if ( y )
 200         *y = gs_rectDialog.y;
 201 }
 202
 203 void wxColourDialog::DoCentre(int dir)
 204 {
 205     m_centreDir = dir;
 206
 207     // it's unnecessary to do anything else at this stage as we'll redo it in
 208     // MSWOnInitDone() anyhow
 209 }
 210
 211 void wxColourDialog::DoMoveWindow(int x, int y, int WXUNUSED(w), int WXUNUSED(h))
 212 {
 213     gs_rectDialog.x = x;
 214     gs_rectDialog.y = y;
 215
 216     // our HWND is only set when we're called from MSWOnInitDone(), test if
 217     // this is the case
 218     HWND hwnd = GetHwnd();
 219     if ( hwnd )
 220     {
 221         // size of the dialog can't be changed because the controls are not
 222         // laid out correctly then
 223        ::SetWindowPos(hwnd, HWND_TOP, x, y, 0, 0, SWP_NOZORDER | SWP_NOSIZE);
 224     }
 225     else // just remember that we were requested to move the window
 226     {
 227         m_movedWindow = true;
 228
 229         // if Centre() had been called before, it shouldn't be taken into
 230         // account now
 231         m_centreDir = 0;
 232     }
 233 }
 234
 235 void wxColourDialog::DoGetSize(int *width, int *height) const
 236 {
 237     if ( width )
 238         *width = gs_rectDialog.width;
 239     if ( height )
 240         *height = gs_rectDialog.height;
 241 }
 242
 243 void wxColourDialog::DoGetClientSize(int *width, int *height) const
 244 {
 245     if ( width )
 246         *width = gs_rectDialog.width;
 247     if ( height )
 248         *height = gs_rectDialog.height;
 249 }
 250
 251 void wxColourDialog::MSWOnInitDone(WXHWND hDlg)
 252 {
 253     // set HWND so that our DoMoveWindow() works correctly
 254     SetHWND(hDlg);
 255
 256     if ( m_centreDir )
 257     {
 258         // now we have the real dialog size, remember it
 259         RECT rect;
 260         ::GetWindowRect((HWND)hDlg, &rect);
 261         gs_rectDialog = wxRectFromRECT(rect);
 262
 263         // and position the window correctly: notice that we must use the base
 264         // class version as our own doesn't do anything except setting flags
 265         wxDialog::DoCentre(m_centreDir);
 266     }
 267     else if ( m_movedWindow ) // need to just move it to the correct place
 268     {
 269         SetPosition(GetPosition());
 270     }
 271
 272     // we shouldn't destroy hDlg, so disassociate from it
 273     SetHWND(NULL);
 274 }
 275
 276 #endif // wxUSE_COLOURDLG && !(__SMARTPHONE__ && __WXWINCE__)