X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e22c13fe7ed64b4a7cb68ef42b338b6805f9fc64..1483041dab88f43563c26405c1e2a41d6babe6a0:/src/msw/bitmap.cpp?ds=sidebyside

diff --git a/src/msw/bitmap.cpp b/src/msw/bitmap.cpp
index 9f62b5e7c0..99e6867101 100644
--- a/src/msw/bitmap.cpp
+++ b/src/msw/bitmap.cpp
@@ -40,6 +40,8 @@
     #include "wx/icon.h"
 #endif
 
+//#include "device.h"
+
 #include "wx/msw/private.h"
 #include "wx/log.h"
 
@@ -88,10 +90,13 @@ void wxBitmapRefData::Free()
 
     if ( m_hBitmap)
     {
+        //        printf("About to delete bitmap %d\n", (int) (HBITMAP) m_hBitmap);
+#if 1
         if ( !::DeleteObject((HBITMAP)m_hBitmap) )
         {
             wxLogLastError(wxT("DeleteObject(hbitmap)"));
         }
+#endif
     }
 
     delete m_bitmapMask;
@@ -332,7 +337,6 @@ wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 
 bool wxBitmap::Create(int w, int h, int d)
 {
-#ifndef __WXMICROWIN__
     UnRef();
 
     m_refData = new wxBitmapRefData;
@@ -342,7 +346,7 @@ bool wxBitmap::Create(int w, int h, int d)
     GetBitmapData()->m_depth = d;
 
     HBITMAP hbmp;
-
+#ifndef __WXMICROWIN__
     if ( d > 0 )
     {
         hbmp = ::CreateBitmap(w, h, 1, d, NULL);
@@ -352,6 +356,7 @@ bool wxBitmap::Create(int w, int h, int d)
         }
     }
     else
+#endif
     {
         ScreenHDC dc;
         hbmp = ::CreateCompatibleBitmap(dc, w, h);
@@ -369,9 +374,6 @@ bool wxBitmap::Create(int w, int h, int d)
     GetBitmapData()->m_ok = hbmp != 0;
 #endif // WXWIN_COMPATIBILITY_2
     return Ok();
-#else
-    return FALSE;
-#endif
 }
 
 // ----------------------------------------------------------------------------
@@ -383,8 +385,124 @@ bool wxBitmap::Create(int w, int h, int d)
 bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 {
 #ifdef __WXMICROWIN__
-    // TODO
-    return FALSE;
+
+  // Set this to 1 to experiment with mask code,
+  // which currently doesn't work
+#define USE_MASKS 0
+
+    m_refData = new wxBitmapRefData();
+
+    // Initial attempt at a simple-minded implementation.
+    // The bitmap will always be created at the screen depth,
+    // so the 'depth' argument is ignored.
+
+    HDC hScreenDC = ::GetDC(NULL);
+    //    printf("Screen planes = %d, bpp = %d\n", hScreenDC->psd->planes, hScreenDC->psd->bpp);
+    int screenDepth = ::GetDeviceCaps(hScreenDC, BITSPIXEL);
+
+    HBITMAP hBitmap = ::CreateCompatibleBitmap(hScreenDC, image.GetWidth(), image.GetHeight());
+    HBITMAP hMaskBitmap = NULL;
+    HBITMAP hOldMaskBitmap = NULL;
+    HDC hMaskDC = NULL;
+    unsigned char maskR = 0;
+    unsigned char maskG = 0;
+    unsigned char maskB = 0;
+
+    //    printf("Created bitmap %d\n", (int) hBitmap);
+    if (hBitmap == NULL)
+    {
+        ::ReleaseDC(NULL, hScreenDC);
+        return FALSE;
+    }
+    HDC hMemDC = ::CreateCompatibleDC(hScreenDC);
+
+    HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap);
+    ::ReleaseDC(NULL, hScreenDC);
+
+    // created an mono-bitmap for the possible mask
+    bool hasMask = image.HasMask();
+
+    if ( hasMask )
+    {
+#if USE_MASKS
+        // FIXME: we should be able to pass bpp = 1, but
+        // GdBlit can't handle a different depth
+#if 0
+        hMaskBitmap = ::CreateBitmap( (WORD)image.GetWidth(), (WORD)image.GetHeight(), 1, 1, NULL );
+#else
+        hMaskBitmap = ::CreateCompatibleBitmap( hMemDC, (WORD)image.GetWidth(), (WORD)image.GetHeight());
+#endif
+        maskR = image.GetMaskRed();
+        maskG = image.GetMaskGreen();
+        maskB = image.GetMaskBlue();
+
+        if (!hMaskBitmap)
+        {
+            hasMask = FALSE;
+        }
+        else
+        {
+            hScreenDC = ::GetDC(NULL);
+            hMaskDC = ::CreateCompatibleDC(hScreenDC);
+           ::ReleaseDC(NULL, hScreenDC);
+
+            hOldMaskBitmap = ::SelectObject( hMaskDC, hMaskBitmap);
+        }
+#else
+        hasMask = FALSE;
+#endif
+    }
+
+    int i, j;
+    for (i = 0; i < image.GetWidth(); i++)
+    {
+        for (j = 0; j < image.GetHeight(); j++)
+        {
+            unsigned char red = image.GetRed(i, j);
+            unsigned char green = image.GetGreen(i, j);
+            unsigned char blue = image.GetBlue(i, j);
+
+            ::SetPixel(hMemDC, i, j, PALETTERGB(red, green, blue));
+
+            if (hasMask)
+            {
+                // scan the bitmap for the transparent colour and set the corresponding
+                // pixels in the mask to BLACK and the rest to WHITE
+                if (maskR == red && maskG == green && maskB == blue)
+                    ::SetPixel(hMaskDC, i, j, PALETTERGB(0, 0, 0));
+                else
+                    ::SetPixel(hMaskDC, i, j, PALETTERGB(255, 255, 255));
+            }
+        }
+    }
+
+    ::SelectObject(hMemDC, hOldBitmap);
+    ::DeleteDC(hMemDC);
+    if (hasMask)
+    {
+        ::SelectObject(hMaskDC, hOldMaskBitmap);
+        ::DeleteDC(hMaskDC);
+
+        ((wxBitmapRefData*)m_refData)->m_bitmapMask = new wxMask((WXHBITMAP) hMaskBitmap);
+    }
+
+    SetWidth(image.GetWidth());
+    SetHeight(image.GetHeight());
+    SetDepth(screenDepth);
+    SetHBITMAP( (WXHBITMAP) hBitmap );
+
+#if wxUSE_PALETTE
+    // Copy the palette from the source image
+    SetPalette(image.GetPalette());
+#endif // wxUSE_PALETTE
+
+#if WXWIN_COMPATIBILITY_2
+    // check the wxBitmap object
+    GetBitmapData()->SetOk();
+#endif // WXWIN_COMPATIBILITY_2
+
+    return TRUE;
+
 #else
     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 
@@ -621,9 +739,68 @@ bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 wxImage wxBitmap::ConvertToImage() const
 {
 #ifdef __WXMICROWIN__
-    // TODO
-    return wxImage();
-#else
+    // Initial attempt at a simple-minded implementation.
+    // The bitmap will always be created at the screen depth,
+    // so the 'depth' argument is ignored.
+    // TODO: transparency (create a mask image)
+
+    if (!Ok())
+    {
+        wxFAIL_MSG( wxT("bitmap is invalid") );
+        return wxNullImage;
+    }
+
+    wxImage image;
+
+    wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
+
+    // create an wxImage object
+    int width = GetWidth();
+    int height = GetHeight();
+    image.Create( width, height );
+    unsigned char *data = image.GetData();
+    if( !data )
+    {
+        wxFAIL_MSG( wxT("could not allocate data for image") );
+        return wxNullImage;
+    }
+
+    HDC hScreenDC = ::GetDC(NULL);
+
+    HDC hMemDC = ::CreateCompatibleDC(hScreenDC);
+    ::ReleaseDC(NULL, hScreenDC);
+
+    HBITMAP hBitmap = (HBITMAP) GetHBITMAP();
+
+    HBITMAP hOldBitmap = ::SelectObject(hMemDC, hBitmap);
+
+    int i, j;
+    for (i = 0; i < GetWidth(); i++)
+    {
+        for (j = 0; j < GetHeight(); j++)
+        {
+            COLORREF color = ::GetPixel(hMemDC, i, j);
+            unsigned char red = GetRValue(color);
+            unsigned char green = GetGValue(color);
+            unsigned char blue = GetBValue(color);
+
+            image.SetRGB(i, j, red, green, blue);
+        }
+    }
+
+    ::SelectObject(hMemDC, hOldBitmap);
+    ::DeleteDC(hMemDC);
+
+#if wxUSE_PALETTE
+    // Copy the palette from the source image
+    if (GetPalette())
+        image.SetPalette(* GetPalette());
+#endif // wxUSE_PALETTE
+
+    return image;
+
+#else // __MICROWIN__
+
     wxImage image;
 
     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
@@ -830,7 +1007,6 @@ bool wxBitmap::SaveFile(const wxString& filename,
 
 wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
 {
-#ifndef __WXMICROWIN__
     wxCHECK_MSG( Ok() &&
                  (rect.x >= 0) && (rect.y >= 0) &&
                  (rect.x+rect.width <= GetWidth()) &&
@@ -840,35 +1016,41 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
     wxBitmap ret( rect.width, rect.height, GetDepth() );
     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 
+#ifndef __WXMICROWIN__
     // copy bitmap data
-    HDC dcSrc = ::CreateCompatibleDC(NULL);
-    HDC dcDst = ::CreateCompatibleDC(NULL);
-    SelectObject(dcSrc, (HBITMAP) GetHBITMAP());
-    SelectObject(dcDst, (HBITMAP) ret.GetHBITMAP());
-    BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
+    MemoryHDC dcSrc, dcDst;
+
+    {
+        SelectInHDC selectSrc(dcSrc, GetHbitmap()),
+                    selectDst(dcDst, GetHbitmapOf(ret));
+
+        if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+                       dcSrc, rect.x, rect.y, SRCCOPY) )
+        {
+            wxLogLastError(_T("BitBlt"));
+        }
+    }
 
     // copy mask if there is one
-    if (GetMask())
+    if ( GetMask() )
     {
         HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0);
 
-        SelectObject(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap());
-        SelectObject(dcDst, (HBITMAP) hbmpMask);
-        BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
+        SelectInHDC selectSrc(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap()),
+                    selectDst(dcDst, hbmpMask);
+
+        if ( !::BitBlt(dcDst, 0, 0, rect.width, rect.height,
+                       dcSrc, rect.x, rect.y, SRCCOPY) )
+        {
+            wxLogLastError(_T("BitBlt"));
+        }
 
         wxMask *mask = new wxMask((WXHBITMAP) hbmpMask);
         ret.SetMask(mask);
     }
-
-    SelectObject(dcDst, NULL);
-    SelectObject(dcSrc, NULL);
-    DeleteDC(dcDst);
-    DeleteDC(dcSrc);
+#endif // !__WXMICROWIN__
 
     return ret;
-#else
-    return wxBitmap();
-#endif
 }
 
 // ----------------------------------------------------------------------------
@@ -916,7 +1098,7 @@ void wxBitmap::SetMask(wxMask *mask)
 wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const
 {
 #ifdef __WXMICROWIN__
-    return wxBitmap();
+    return *this;
 #else
     wxMemoryDC      memDC;
     wxBitmap        tmpBitmap(GetWidth(), GetHeight(), dc.GetDepth());
@@ -1115,32 +1297,13 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
         ok = FALSE;
     }
 
-    // this is not very efficient, but I can't think of a better way of doing
-    // it
-    for ( int w = 0; ok && (w < width); w++ )
+    if ( ok )
     {
-        for ( int h = 0; ok && (h < height); h++ )
-        {
-            COLORREF col = GetPixel(srcDC, w, h);
-            if ( col == CLR_INVALID )
-            {
-                wxLogLastError(wxT("GetPixel"));
-
-                // doesn't make sense to continue
-                ok = FALSE;
-
-                break;
-            }
-
-            if ( col == maskColour )
-            {
-                ::SetPixel(destDC, w, h, RGB(0, 0, 0));
-            }
-            else
-            {
-                ::SetPixel(destDC, w, h, RGB(255, 255, 255));
-            }
-        }
+        // this will create a monochrome bitmap with 0 points for the pixels
+        // which have the same value as the background colour and 1 for the
+        // others
+        ::SetBkColor(srcDC, maskColour);
+        ::BitBlt(destDC, 0, 0, width, height, srcDC, 0, 0, NOTSRCCOPY);
     }
 
     ::SelectObject(srcDC, hbmpSrcOld);
@@ -1149,9 +1312,9 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
     ::DeleteDC(destDC);
 
     return ok;
-#else
+#else // __WXMICROWIN__
     return FALSE;
-#endif
+#endif // __WXMICROWIN__/!__WXMICROWIN__
 }
 
 // ----------------------------------------------------------------------------