src/msw/imaglist.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        imaglist.cpp
   3 // Purpose:     wxImageList
   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 "imaglist.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 #if defined(__WIN95__)
  24
  25 #ifndef WX_PRECOMP
  26 #include <stdio.h>
  27 #include "wx/setup.h"
  28 #include "wx/window.h"
  29 #include "wx/icon.h"
  30 #include "wx/dc.h"
  31 #include "wx/string.h"
  32 #endif
  33
  34 #include "wx/log.h"
  35 #include "wx/intl.h"
  36
  37 #include "wx/msw/imaglist.h"
  38 #include "wx/msw/private.h"
  39
  40 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  41 #include <commctrl.h>
  42 #endif
  43
  44 #if !USE_SHARED_LIBRARY
  45 IMPLEMENT_DYNAMIC_CLASS(wxImageList, wxObject)
  46 #endif
  47
  48 wxImageList::wxImageList(void)
  49 {
  50     m_hImageList = 0;
  51 }
  52
  53 wxImageList::~wxImageList(void)
  54 {
  55         if ( m_hImageList )
  56                 ImageList_Destroy((HIMAGELIST) m_hImageList);
  57         m_hImageList = 0;
  58 }
  59
  60
  61 // Attributes
  62 ////////////////////////////////////////////////////////////////////////////
  63
  64 // Returns the number of images in the image list.
  65 int wxImageList::GetImageCount(void) const
  66 {
  67         return ImageList_GetImageCount((HIMAGELIST) m_hImageList);
  68 }
  69
  70 // Operations
  71 ////////////////////////////////////////////////////////////////////////////
  72
  73 // Creates an image list
  74 bool wxImageList::Create(int width, int height, bool mask, int initial)
  75 {
  76         UINT flags = 0;
  77         if ( mask )
  78                 flags |= ILC_MASK;
  79
  80         // Grow by 1, I guess this is reasonable behaviour most of the time
  81         m_hImageList = (WXHIMAGELIST) ImageList_Create(width, height, flags, initial, 1);
  82         return (m_hImageList != 0);
  83 }
  84
  85 // Adds a bitmap, and optionally a mask bitmap.
  86 // Note that wxImageList creates new bitmaps, so you may delete
  87 // 'bitmap' and 'mask'.
  88 int wxImageList::Add(const wxBitmap& bitmap, const wxBitmap& mask)
  89 {
  90         HBITMAP hBitmap1 = (HBITMAP) bitmap.GetHBITMAP();
  91         HBITMAP hBitmap2 = 0;
  92         if ( mask.Ok() )
  93             hBitmap2 = (HBITMAP) mask.GetHBITMAP();
  94     else if (bitmap.GetMask())
  95         hBitmap2 = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
  96
  97     HBITMAP hBitmapI=0;
  98     if(hBitmap2!=0) {
  99         // Microsoft imagelist masks are inverted from wxWindows mask standard (white is mask color)
 100         BITMAP bm;
 101         ::GetObject(hBitmap2,sizeof(BITMAP),(LPVOID)&bm);
 102         int w=bm.bmWidth;
 103         int h=bm.bmHeight;
 104         HDC hdc = ::CreateCompatibleDC(NULL);
 105         HDC hdci = ::CreateCompatibleDC(NULL);
 106         hBitmapI = ::CreateCompatibleBitmap(hdci, w, h);
 107         ::SelectObject(hdc, hBitmap2);
 108         ::SelectObject(hdci, hBitmapI);
 109         ::BitBlt(hdci, 0, 0, w, h, hdc, 0, 0, NOTSRCCOPY);
 110         ::DeleteDC(hdc);
 111         ::DeleteDC(hdci);
 112     }
 113
 114     int index = ImageList_Add((HIMAGELIST) GetHIMAGELIST(), hBitmap1, hBitmapI);
 115         if ( index == -1 )
 116     {
 117         wxLogError(_("Couldn't add an image to the image list."));
 118     }
 119
 120     // Clean up inverted mask
 121     if(hBitmapI!=0)
 122         ::DeleteObject(hBitmapI);
 123
 124     return index;
 125 }
 126
 127 // Adds a bitmap, using the specified colour to create the mask bitmap
 128 // Note that wxImageList creates new bitmaps, so you may delete
 129 // 'bitmap'.
 130 int wxImageList::Add(const wxBitmap& bitmap, const wxColour& maskColour)
 131 {
 132 #ifdef __TWIN32__
 133         wxFAIL_MSG("ImageList_AddMasked not implemented in TWIN32");
 134         return -1;
 135 #else
 136         HBITMAP hBitmap1 = (HBITMAP) bitmap.GetHBITMAP();
 137         COLORREF colorRef = PALETTERGB(maskColour.Red(), maskColour.Green(), maskColour.Blue());
 138         return ImageList_AddMasked((HIMAGELIST) GetHIMAGELIST(), hBitmap1, colorRef);
 139 #endif
 140 }
 141
 142 // Adds a bitmap and mask from an icon.
 143 int wxImageList::Add(const wxIcon& icon)
 144 {
 145         HICON hIcon = (HICON) icon.GetHICON();
 146         return ImageList_AddIcon((HIMAGELIST) GetHIMAGELIST(), hIcon);
 147 }
 148
 149 // Replaces a bitmap, optionally passing a mask bitmap.
 150 // Note that wxImageList creates new bitmaps, so you may delete
 151 // 'bitmap' and 'mask'.
 152 bool wxImageList::Replace(int index, const wxBitmap& bitmap, const wxBitmap& mask)
 153 {
 154 #ifdef __TWIN32__
 155         wxFAIL_MSG("ImageList_Replace not implemented in TWIN32");
 156         return FALSE;
 157 #else
 158         HBITMAP hBitmap1 = (HBITMAP) bitmap.GetHBITMAP();
 159         HBITMAP hBitmap2 = 0;
 160         if ( mask.Ok() )
 161             hBitmap2 = (HBITMAP) mask.GetHBITMAP();
 162         return (ImageList_Replace((HIMAGELIST) GetHIMAGELIST(), index, hBitmap1, hBitmap2) != 0);
 163 #endif
 164 }
 165
 166 /* Not supported by Win95
 167 // Replacing a bitmap, using the specified colour to create the mask bitmap
 168 // Note that wxImageList creates new bitmaps, so you may delete
 169 // 'bitmap'.
 170 bool wxImageList::Replace(int index, const wxBitmap& bitmap, const wxColour& maskColour)
 171 {
 172         HBITMAP hBitmap1 = (HBITMAP) bitmap.GetHBITMAP();
 173         COLORREF colorRef = PALETTERGB(maskColour.Red(), maskColour.Green(), maskColour.Blue());
 174         return (bool) ImageList_ReplaceMasked((HIMAGELIST) GetHIMAGELIST(), index, hBitmap1, colorRef);
 175 }
 176 */
 177
 178 // Replaces a bitmap and mask from an icon.
 179 bool wxImageList::Replace(int index, const wxIcon& icon)
 180 {
 181         HICON hIcon = (HICON) icon.GetHICON();
 182         return (ImageList_ReplaceIcon((HIMAGELIST) GetHIMAGELIST(), index, hIcon) != 0);
 183 }
 184
 185 // Removes the image at the given index.
 186 bool wxImageList::Remove(int index)
 187 {
 188 #ifdef __TWIN32__
 189         wxFAIL_MSG("ImageList_Replace not implemented in TWIN32");
 190         return FALSE;
 191 #else
 192         return (ImageList_Remove((HIMAGELIST) GetHIMAGELIST(), index) != 0);
 193 #endif
 194 }
 195
 196 // Remove all images
 197 bool wxImageList::RemoveAll(void)
 198 {
 199         // TODO: Is this correct?
 200         while ( GetImageCount() > 0 )
 201         {
 202                 Remove(0);
 203         }
 204         return TRUE;
 205 }
 206
 207 // Draws the given image on a dc at the specified position.
 208 // If 'solidBackground' is TRUE, Draw sets the image list background
 209 // colour to the background colour of the wxDC, to speed up
 210 // drawing by eliminating masked drawing where possible.
 211 bool wxImageList::Draw(int index, wxDC& dc, int x, int y,
 212     int flags, bool solidBackground)
 213 {
 214 #ifdef __TWIN32__
 215         wxFAIL_MSG("ImageList_Replace not implemented in TWIN32");
 216         return FALSE;
 217 #else
 218         HDC hDC = (HDC) dc.GetHDC();
 219         if ( !hDC )
 220                 return FALSE;
 221
 222         if ( solidBackground )
 223         {
 224                 wxBrush *brush = & dc.GetBackground();
 225                 if ( brush && brush->Ok())
 226                 {
 227                         wxColour col(brush->GetColour());
 228                         ImageList_SetBkColor((HIMAGELIST) GetHIMAGELIST(),
 229                                         PALETTERGB(col.Red(), col.Green(), col.Blue()));
 230                 }
 231                 else
 232                         ImageList_SetBkColor((HIMAGELIST) GetHIMAGELIST(),
 233                                 CLR_NONE);
 234         }
 235         else
 236                 ImageList_SetBkColor((HIMAGELIST) GetHIMAGELIST(),
 237                                 CLR_NONE);
 238
 239     UINT style = 0;
 240         if ( flags & wxIMAGELIST_DRAW_NORMAL )
 241                 style |= ILD_NORMAL;
 242         if ( flags & wxIMAGELIST_DRAW_TRANSPARENT )
 243                 style |= ILD_TRANSPARENT;
 244         if ( flags & wxIMAGELIST_DRAW_SELECTED )
 245                 style |= ILD_SELECTED;
 246         if ( flags & wxIMAGELIST_DRAW_FOCUSED )
 247                 style |= ILD_FOCUS;
 248
 249         return (ImageList_Draw((HIMAGELIST) GetHIMAGELIST(), index, hDC,
 250                 x, y, style) != 0);
 251 #endif
 252 }
 253
 254 #endif
 255