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