Initial revision

[wxWidgets.git] / src / msw / dc.cpp

diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp
index 7216cb8f6956b6855c77145e6e3f1ee67fe8cb5a..3cffc336ee304d28f0f62fe309e970d53cc4d60f 100644 (file)
--- a/src/msw/dc.cpp
+++ b/src/msw/dc.cpp
@@ -58,9 +58,7 @@
 
 #include "wx/msw/private.h"
 
 
 #include "wx/msw/private.h"
 

-#if !USE_SHARED_LIBRARY

     IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
     IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)

-#endif

 
 // ---------------------------------------------------------------------------
 // constants
 
 // ---------------------------------------------------------------------------
 // constants


@@ -71,6 +69,18 @@ static const int VIEWPORT_EXTENT = 1000;
 static const int MM_POINTS = 9;
 static const int MM_METRIC = 10;
 
 static const int MM_POINTS = 9;
 static const int MM_METRIC = 10;
 

+// usually this is defined in math.h
+#ifndef M_PI
+    static const double M_PI = 3.14159265358979323846;
+#endif // M_PI
+
+// ---------------------------------------------------------------------------
+// private functions
+// ---------------------------------------------------------------------------
+
+// convert degrees to radians
+static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+

 // ===========================================================================
 // implementation
 // ===========================================================================
 // ===========================================================================
 // implementation
 // ===========================================================================


@@ -538,15 +548,18 @@ void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,d
     wxCoord x2 = (x+w);
     wxCoord y2 = (y+h);
 
     wxCoord x2 = (x+w);
     wxCoord y2 = (y+h);
 

-    const double deg2rad = 3.14159265359 / 180.0;

     int rx1 = XLOG2DEV(x+w/2);
     int ry1 = YLOG2DEV(y+h/2);
     int rx2 = rx1;
     int ry2 = ry1;
     int rx1 = XLOG2DEV(x+w/2);
     int ry1 = YLOG2DEV(y+h/2);
     int rx2 = rx1;
     int ry2 = ry1;

-    rx1 += (int)(100.0 * abs(w) * cos(sa * deg2rad));
-    ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa * deg2rad));
-    rx2 += (int)(100.0 * abs(w) * cos(ea * deg2rad));
-    ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea * deg2rad));
+
+    sa = DegToRad(sa);
+    ea = DegToRad(ea);
+
+    rx1 += (int)(100.0 * abs(w) * cos(sa));
+    ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
+    rx2 += (int)(100.0 * abs(w) * cos(ea));
+    ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));

 
     // draw pie with NULL_PEN first and then outline otherwise a line is
     // drawn from the start and end points to the centre
 
     // draw pie with NULL_PEN first and then outline otherwise a line is
     // drawn from the start and end points to the centre


@@ -587,19 +600,63 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask
     if (!bmp.Ok())
         return;
 
     if (!bmp.Ok())
         return;
 

+       bool needsPixelCopy = false ;
+       bool isPrinter = false ;
+    if (IsKindOf(CLASSINFO(wxPrinterDC)) )
+    {
+       isPrinter = true ;
+       if ( ::GetDeviceCaps((HDC) m_hDC, RASTERCAPS) & RC_STRETCHDIB )
+               {
+       }
+               else
+               {
+                       needsPixelCopy = true ;
+               }
+       }

     // If we're not drawing transparently, and not drawing to a printer,
     // optimize this function to use Windows functions.
     // If we're not drawing transparently, and not drawing to a printer,
     // optimize this function to use Windows functions.

-    if (!useMask && !IsKindOf(CLASSINFO(wxPrinterDC)))
+    if (!useMask && !needsPixelCopy)

     {
     {

-        HDC cdc = GetHdc();
-        HDC memdc = ::CreateCompatibleDC( cdc );
-        HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
-
-        wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
-
-        ::SelectObject( memdc, hbitmap );
-        ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY);
-        ::DeleteDC( memdc );
+       if ( isPrinter )
+       {
+               BITMAPINFO *info = (BITMAPINFO *) malloc( sizeof( BITMAPINFOHEADER ) + 256 * sizeof(RGBQUAD ) ) ;
+               int iBitsSize = ((bmp.GetWidth() + 3 ) & ~3 ) * bmp.GetHeight() ;
+               
+               void* bits = malloc( iBitsSize ) ;
+               
+               memset( info , 0 , sizeof( BITMAPINFOHEADER ) ) ;
+               
+               info->bmiHeader.biSize = sizeof( BITMAPINFOHEADER ) ;
+               info->bmiHeader.biWidth = bmp.GetWidth() ;
+               info->bmiHeader.biHeight = bmp.GetHeight() ;
+               info->bmiHeader.biPlanes = 1 ;
+               info->bmiHeader.biBitCount = 8 ;
+               info->bmiHeader.biCompression = BI_RGB ;
+               
+               HDC display = GetDC( NULL ) ;
+                       if ( GetDIBits( display , (HBITMAP) bmp.GetHBITMAP( ) , 0 , bmp.GetHeight() , bits , info , DIB_RGB_COLORS ) )
+                       {
+                               StretchDIBits( (HDC) m_hDC, 
+                                       x, y, bmp.GetWidth(), bmp.GetHeight() , 
+                                       0 , 0 ,bmp.GetWidth(), bmp.GetHeight() , 
+                                       bits , info , DIB_RGB_COLORS , SRCCOPY ) ;
+                       }
+                       ReleaseDC( NULL , display ) ;
+                       free ( bits ) ;
+                       free( info ) ;
+       }
+       else
+       {
+               HDC cdc = GetHdc();
+               HDC memdc = ::CreateCompatibleDC( cdc );
+               HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
+
+               wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
+
+               ::SelectObject( memdc, hbitmap );
+               ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY);
+               ::DeleteDC( memdc );
+        }

     }
     else
     {
     }
     else
     {


@@ -625,34 +682,107 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask
 
 void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
 {
 
 void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
 {

-    if (m_textForegroundColour.Ok())
-        SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
+    DrawAnyText(text, x, y);
+
+    // update the bounding box
+    CalcBoundingBox(x, y);
+
+    wxCoord w, h;
+    GetTextExtent(text, &w, &h);
+    CalcBoundingBox(x + w, y + h);
+}
+
+void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
+{
+    // prepare for drawing the text
+    if ( m_textForegroundColour.Ok() )
+        SetTextColor(GetHdc(), m_textForegroundColour.GetPixel());

 
     DWORD old_background = 0;
 
     DWORD old_background = 0;

-    if (m_textBackgroundColour.Ok())
+    if ( m_textBackgroundColour.Ok() )

     {
         old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
     }
 
     {
         old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
     }
 

-    if (m_backgroundMode == wxTRANSPARENT)
-        SetBkMode(GetHdc(), TRANSPARENT);
-    else
-        SetBkMode(GetHdc(), OPAQUE);
+    SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
+                                                          : OPAQUE);

 
 

-    (void)TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), WXSTRINGCAST text, wxStrlen(WXSTRINGCAST text));
+    if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
+                   text.c_str(), text.length()) == 0 )
+    {
+        wxLogLastError("TextOut");
+    }

 
 

-    if (m_textBackgroundColour.Ok())
+    // restore the old parameters (text foreground colour may be left because
+    // it never is set to anything else, but background should remain
+    // transparent even if we just drew an opaque string)
+    if ( m_textBackgroundColour.Ok() )

         (void)SetBkColor(GetHdc(), old_background);
 
         (void)SetBkColor(GetHdc(), old_background);
 

-    // background colour is used only for DrawText, otherwise
-    // always TRANSPARENT, RR

     SetBkMode(GetHdc(), TRANSPARENT);
     SetBkMode(GetHdc(), TRANSPARENT);

+}

 
 

-    CalcBoundingBox(x, y);
+void wxDC::DoDrawRotatedText(const wxString& text,
+                             wxCoord x, wxCoord y,
+                             double angle)
+{
+    // we test that we have some font because otherwise we should still use the
+    // "else" part below to avoid that DrawRotatedText(angle = 180) and
+    // DrawRotatedText(angle = 0) use different fonts (we can't use the default
+    // font for drawing rotated fonts unfortunately)
+    if ( (angle == 0.0) && m_font.Ok() )
+    {
+        DoDrawText(text, x, y);
+    }
+    else
+    {
+        // NB: don't take DEFAULT_GUI_FONT because it's not TrueType and so
+        //     can't have non zero orientation/escapement
+        wxFont font = m_font.Ok() ? m_font : *wxNORMAL_FONT;
+        HFONT hfont = (HFONT)font.GetResourceHandle();
+        LOGFONT lf;
+        if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
+        {
+            wxLogLastError("GetObject(hfont)");
+        }

 
 

-    wxCoord w, h;
-    GetTextExtent(text, &w, &h);
-    CalcBoundingBox((x + w), (y + h));
+        // GDI wants the angle in tenth of degree
+        long angle10 = (long)(angle * 10);
+        lf.lfEscapement = angle10;
+        lf. lfOrientation = angle10;
+
+        hfont = ::CreateFontIndirect(&lf);
+        if ( !hfont )
+        {
+            wxLogLastError("CreateFont");
+        }
+        else
+        {
+            HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont);
+
+            DrawAnyText(text, x, y);
+
+            (void)::SelectObject(GetHdc(), hfontOld);
+        }
+
+        // call the bounding box by adding all four vertices of the rectangle
+        // containing the text to it (simpler and probably not slower than
+        // determining which of them is really topmost/leftmost/...)
+        wxCoord w, h;
+        GetTextExtent(text, &w, &h);
+
+        double rad = DegToRad(angle);
+
+        // "upper left" and "upper right"
+        CalcBoundingBox(x, y);
+        CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
+
+        // "bottom left" and "bottom right"
+        x += (wxCoord)(h*sin(rad));
+        y += (wxCoord)(h*cos(rad));
+        CalcBoundingBox(x, y);
+        CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+    }

 }
 
 // ---------------------------------------------------------------------------
 }
 
 // ---------------------------------------------------------------------------


@@ -1144,17 +1274,6 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
         else
 #endif
         {
         else
 #endif
         {

-            // Old code
-#if 0
-            HDC dc_mask = CreateCompatibleDC((HDC) source->m_hDC);
-            ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
-            success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
-                dc_mask, xsrc1, ysrc1, 0x00220326 /* NOTSRCAND */) != 0);
-            success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
-                (HDC) source->m_hDC, xsrc1, ysrc1, SRCPAINT) != 0);
-            ::SelectObject(dc_mask, 0);
-            ::DeleteDC(dc_mask);
-#endif

             // New code from Chris Breeze, 15/7/98
             // Blit bitmap with mask
 
             // New code from Chris Breeze, 15/7/98
             // Blit bitmap with mask
 


@@ -1232,11 +1351,37 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
     }
     else
     {
     }
     else
     {

+        // If we are printing, source colours are screen colours
+        // not printer colours and so we need copy the bitmap
+        // pixel by pixel.

         if (IsKindOf(CLASSINFO(wxPrinterDC)))
         {
         if (IsKindOf(CLASSINFO(wxPrinterDC)))
         {

-            // If we are printing, source colours are screen colours
-            // not printer colours and so we need copy the bitmap
-            // pixel by pixel.
+            HDC dc_src = (HDC) source->m_hDC;
+               RECT rect;
+               for (int y = 0; y < height; y++)
+               {
+                // This is Stefan Csomor's optimisation, where
+                // identical adjacent pixels are drawn together.
+                // We still need a faster way of drawing bitmaps,
+                // perhaps converting to a DIB first and using SetDIBitsToDevice.
+                   for (int x = 0; x < width; x++)
+                   {
+                       COLORREF col = ::GetPixel(dc_src, x, y) ;
+                       HBRUSH brush = ::CreateSolidBrush( col );
+
+                       rect.left = xdest1 + x;
+                       rect.top = ydest1 + y;
+                       while( (x + 1 < width) && (::GetPixel(dc_src, x + 1, y) == col ) )
+                       {
+                               ++x ;
+                       }
+                       rect.right = xdest1 + x + 1;
+                       rect.bottom = rect.top + 1;
+                       ::FillRect((HDC) m_hDC, &rect, brush);
+                       ::DeleteObject(brush);
+                }
+               }
+/*

             HDC dc_src = (HDC) source->m_hDC;
             RECT rect;
             for (int x = 0; x < width; x++)
             HDC dc_src = (HDC) source->m_hDC;
             RECT rect;
             for (int x = 0; x < width; x++)


@@ -1250,7 +1395,8 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
                     ::DeleteObject(brush);
                 }
             }
                     ::DeleteObject(brush);
                 }
             }

-        }
+*/
+           }

         else
         {
             success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
         else
         {
             success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,