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 #include "wx/modalhook.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/msw/wrapcdlg.h"
  34     #include <stdio.h>
  35     #include "wx/colour.h"
  36     #include "wx/gdicmn.h"
  37     #include "wx/utils.h"
  38     #include "wx/math.h"
  39 #endif
  40
  41 #include "wx/msw/private.h"
  42
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 // ----------------------------------------------------------------------------
  47 // globals
  48 // ----------------------------------------------------------------------------
  49
  50 // standard colors dialog size for the Windows systems
  51 // this is ok if color dialog created with standart color
  52 // and "Define Custom Colors" extension not shown
  53 static wxRect gs_rectDialog(0, 0, 222, 324);
  54
  55 // ----------------------------------------------------------------------------
  56 // wxWin macros
  57 // ----------------------------------------------------------------------------
  58
  59 IMPLEMENT_DYNAMIC_CLASS(wxColourDialog, wxDialog)
  60
  61 // ============================================================================
  62 // implementation
  63 // ============================================================================
  64
  65 // ----------------------------------------------------------------------------
  66 // colour dialog hook proc
  67 // ----------------------------------------------------------------------------
  68
  69 UINT_PTR CALLBACK
  70 wxColourDialogHookProc(HWND hwnd,
  71                        UINT uiMsg,
  72                        WPARAM WXUNUSED(wParam),
  73                        LPARAM lParam)
  74 {
  75     if ( uiMsg == WM_INITDIALOG )
  76     {
  77         CHOOSECOLOR *pCC = (CHOOSECOLOR *)lParam;
  78         wxColourDialog * const
  79             dialog = reinterpret_cast<wxColourDialog *>(pCC->lCustData);
  80
  81         const wxString title = dialog->GetTitle();
  82         if ( !title.empty() )
  83             ::SetWindowText(hwnd, title.t_str());
  84
  85         dialog->MSWOnInitDone((WXHWND)hwnd);
  86     }
  87
  88     return 0;
  89 }
  90
  91 // ----------------------------------------------------------------------------
  92 // wxColourDialog
  93 // ----------------------------------------------------------------------------
  94
  95 void wxColourDialog::Init()
  96 {
  97     m_movedWindow = false;
  98     m_centreDir = 0;
  99
 100     // reset to zero, otherwise the wx routines won't size the window the
 101     // second time the dialog is shown, because they would believe it already
 102     // has the requested size/position
 103     gs_rectDialog.x =
 104     gs_rectDialog.y = 0;
 105 }
 106
 107 bool wxColourDialog::Create(wxWindow *parent, wxColourData *data)
 108 {
 109     m_parent = parent;
 110     if (data)
 111         m_colourData = *data;
 112
 113     return true;
 114 }
 115
 116 int wxColourDialog::ShowModal()
 117 {
 118     WX_HOOK_MODAL_DIALOG();
 119
 120     // initialize the struct used by Windows
 121     CHOOSECOLOR chooseColorStruct;
 122     memset(&chooseColorStruct, 0, sizeof(CHOOSECOLOR));
 123
 124     size_t i;
 125
 126     // and transfer data from m_colourData to it
 127     COLORREF custColours[16];
 128     for ( i = 0; i < WXSIZEOF(custColours); i++ )
 129     {
 130         if ( m_colourData.GetCustomColour(i).IsOk() )
 131             custColours[i] = wxColourToRGB(m_colourData.GetCustomColour(i));
 132         else
 133             custColours[i] = RGB(255,255,255);
 134     }
 135
 136     chooseColorStruct.lStructSize = sizeof(CHOOSECOLOR);
 137     if ( m_parent )
 138         chooseColorStruct.hwndOwner = GetHwndOf(m_parent);
 139     chooseColorStruct.rgbResult = wxColourToRGB(m_colourData.GetColour());
 140     chooseColorStruct.lpCustColors = custColours;
 141
 142     chooseColorStruct.Flags = CC_RGBINIT | CC_ENABLEHOOK;
 143     chooseColorStruct.lCustData = (LPARAM)this;
 144     chooseColorStruct.lpfnHook = wxColourDialogHookProc;
 145
 146     if ( m_colourData.GetChooseFull() )
 147         chooseColorStruct.Flags |= CC_FULLOPEN;
 148
 149     // do show the modal dialog
 150     if ( !::ChooseColor(&chooseColorStruct) )
 151     {
 152         // 0 error means the dialog was simply cancelled, i.e. no real error
 153         // occurred
 154         const DWORD err = CommDlgExtendedError();
 155         if ( err )
 156         {
 157             wxLogError(_("Colour selection dialog failed with error %0lx."), err);
 158         }
 159
 160         return wxID_CANCEL;
 161     }
 162
 163
 164     // transfer the values chosen by user back into m_colourData
 165     for ( i = 0; i < WXSIZEOF(custColours); i++ )
 166     {
 167       wxRGBToColour(m_colourData.m_custColours[i], custColours[i]);
 168     }
 169
 170     wxRGBToColour(m_colourData.GetColour(), chooseColorStruct.rgbResult);
 171
 172     // this doesn't seem to work (contrary to what MSDN implies) on current
 173     // Windows versions: CC_FULLOPEN is never set on return if it wasn't
 174     // initially set and vice versa
 175     //m_colourData.SetChooseFull((chooseColorStruct.Flags & CC_FULLOPEN) != 0);
 176
 177     return wxID_OK;
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // title
 182 // ----------------------------------------------------------------------------
 183
 184 void wxColourDialog::SetTitle(const wxString& title)
 185 {
 186     m_title = title;
 187 }
 188
 189 wxString wxColourDialog::GetTitle() const
 190 {
 191     return m_title;
 192 }
 193
 194 // ----------------------------------------------------------------------------
 195 // position/size
 196 // ----------------------------------------------------------------------------
 197
 198 void wxColourDialog::DoGetPosition(int *x, int *y) const
 199 {
 200     if ( x )
 201         *x = gs_rectDialog.x;
 202     if ( y )
 203         *y = gs_rectDialog.y;
 204 }
 205
 206 void wxColourDialog::DoCentre(int dir)
 207 {
 208     m_centreDir = dir;
 209
 210     // it's unnecessary to do anything else at this stage as we'll redo it in
 211     // MSWOnInitDone() anyhow
 212 }
 213
 214 void wxColourDialog::DoMoveWindow(int x, int y, int WXUNUSED(w), int WXUNUSED(h))
 215 {
 216     gs_rectDialog.x = x;
 217     gs_rectDialog.y = y;
 218
 219     // our HWND is only set when we're called from MSWOnInitDone(), test if
 220     // this is the case
 221     HWND hwnd = GetHwnd();
 222     if ( hwnd )
 223     {
 224         // size of the dialog can't be changed because the controls are not
 225         // laid out correctly then
 226        ::SetWindowPos(hwnd, HWND_TOP, x, y, 0, 0, SWP_NOZORDER | SWP_NOSIZE);
 227     }
 228     else // just remember that we were requested to move the window
 229     {
 230         m_movedWindow = true;
 231
 232         // if Centre() had been called before, it shouldn't be taken into
 233         // account now
 234         m_centreDir = 0;
 235     }
 236 }
 237
 238 void wxColourDialog::DoGetSize(int *width, int *height) const
 239 {
 240     if ( width )
 241         *width = gs_rectDialog.width;
 242     if ( height )
 243         *height = gs_rectDialog.height;
 244 }
 245
 246 void wxColourDialog::DoGetClientSize(int *width, int *height) const
 247 {
 248     if ( width )
 249         *width = gs_rectDialog.width;
 250     if ( height )
 251         *height = gs_rectDialog.height;
 252 }
 253
 254 void wxColourDialog::MSWOnInitDone(WXHWND hDlg)
 255 {
 256     // set HWND so that our DoMoveWindow() works correctly
 257     SetHWND(hDlg);
 258
 259     if ( m_centreDir )
 260     {
 261         // now we have the real dialog size, remember it
 262         RECT rect;
 263         ::GetWindowRect((HWND)hDlg, &rect);
 264         gs_rectDialog = wxRectFromRECT(rect);
 265
 266         // and position the window correctly: notice that we must use the base
 267         // class version as our own doesn't do anything except setting flags
 268         wxDialog::DoCentre(m_centreDir);
 269     }
 270     else if ( m_movedWindow ) // need to just move it to the correct place
 271     {
 272         SetPosition(GetPosition());
 273     }
 274
 275     // we shouldn't destroy hDlg, so disassociate from it
 276     SetHWND(NULL);
 277 }
 278
 279 #endif // wxUSE_COLOURDLG && !(__SMARTPHONE__ && __WXWINCE__)