/////////////////////////////////////////////////////////////////////////////
-// Name: dc.cpp
-// Purpose: wxDC class
+// Name: src/msw/dc.cpp
+// Purpose: wxDC class for MSW port
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// headers
// ---------------------------------------------------------------------------
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "dc.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
// otherwise
static bool AlphaBlt(HDC hdcDst,
int x, int y, int w, int h,
- HDC hdcSrc,
+ int srcX, int srcY, HDC hdcSrc,
const wxBitmap& bmpSrc);
#ifdef wxHAVE_RAW_BITMAP
-// our (limited) AlphaBlend() replacement
+
+// our (limited) AlphaBlend() replacement for Windows versions not providing it
static void
-wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, const wxBitmap& bmp);
-#endif
+wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h,
+ int srcX, int srcY, const wxBitmap& bmp);
+
+#endif // wxHAVE_RAW_BITMAP
// ----------------------------------------------------------------------------
// private classes
class StretchBltModeChanger
{
public:
- StretchBltModeChanger(HDC hdc, int mode)
+ StretchBltModeChanger(HDC hdc,
+ int WXUNUSED_IN_WINCE(mode))
: m_hdc(hdc)
{
#ifndef __WXWINCE__
m_modeOld = ::SetStretchBltMode(m_hdc, mode);
if ( !m_modeOld )
wxLogLastError(_T("SetStretchBltMode"));
-#else
- wxUnusedVar(mode);
#endif
}
#endif
}
-bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
+bool wxDC::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x),
+ wxCoord WXUNUSED_IN_WINCE(y),
+ const wxColour& WXUNUSED_IN_WINCE(col),
+ int WXUNUSED_IN_WINCE(style))
{
#ifdef __WXWINCE__
- wxUnusedVar(x);
- wxUnusedVar(y);
- wxUnusedVar(col);
- wxUnusedVar(style);
return false;
#else
-
WXMICROWIN_CHECK_HDC_RET(false)
bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
CalcBoundingBox(x, y);
}
-void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
+void wxDC::DoDrawPolygon(int n,
+ wxPoint points[],
+ wxCoord xoffset,
+ wxCoord yoffset,
+ int WXUNUSED_IN_WINCE(fillStyle))
{
WXMICROWIN_CHECK_HDC
}
#ifndef __WXWINCE__
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
-#else
- wxUnusedVar(fillStyle);
#endif
(void)Polygon(GetHdc(), cpoints, n);
#ifndef __WXWINCE__
CalcBoundingBox(x2, y2);
}
+#if wxUSE_SPLINES
+void wxDC::DoDrawSpline(wxList *points)
+{
+#ifdef __WXWINCE__
+ // WinCE does not support ::PolyBezier so use generic version
+ wxDCBase::DoDrawSpline(points);
+#else
+ // quadratic b-spline to cubic bezier spline conversion
+ //
+ // quadratic spline with control points P0,P1,P2
+ // P(s) = P0*(1-s)^2 + P1*2*(1-s)*s + P2*s^2
+ //
+ // bezier spline with control points B0,B1,B2,B3
+ // B(s) = B0*(1-s)^3 + B1*3*(1-s)^2*s + B2*3*(1-s)*s^2 + B3*s^3
+ //
+ // control points of bezier spline calculated from b-spline
+ // B0 = P0
+ // B1 = (2*P1 + P0)/3
+ // B2 = (2*P1 + P2)/3
+ // B3 = P2
+
+ WXMICROWIN_CHECK_HDC
+
+ wxASSERT_MSG( points, wxT("NULL pointer to spline points?") );
+
+ const size_t n_points = points->GetCount();
+ wxASSERT_MSG( n_points > 2 , wxT("incomplete list of spline points?") );
+
+ const size_t n_bezier_points = n_points * 3 + 1;
+ POINT *lppt = (POINT *)malloc(n_bezier_points*sizeof(POINT));
+ size_t bezier_pos = 0;
+ wxCoord x1, y1, x2, y2, cx1, cy1, cx4, cy4;
+
+ wxList::compatibility_iterator node = points->GetFirst();
+ wxPoint *p = (wxPoint *)node->GetData();
+ lppt[ bezier_pos ].x = x1 = p->x;
+ lppt[ bezier_pos ].y = y1 = p->y;
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+ node = node->GetNext();
+ p = (wxPoint *)node->GetData();
+
+ x2 = p->x;
+ y2 = p->y;
+ cx1 = ( x1 + x2 ) / 2;
+ cy1 = ( y1 + y2 ) / 2;
+ lppt[ bezier_pos ].x = XLOG2DEV(cx1);
+ lppt[ bezier_pos ].y = YLOG2DEV(cy1);
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+#if !wxUSE_STL
+ while ((node = node->GetNext()) != NULL)
+#else
+ while ((node = node->GetNext()))
+#endif // !wxUSE_STL
+ {
+ p = (wxPoint *)node->GetData();
+ x1 = x2;
+ y1 = y2;
+ x2 = p->x;
+ y2 = p->y;
+ cx4 = (x1 + x2) / 2;
+ cy4 = (y1 + y2) / 2;
+ // B0 is B3 of previous segment
+ // B1:
+ lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx1)/3);
+ lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy1)/3);
+ bezier_pos++;
+ // B2:
+ lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx4)/3);
+ lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy4)/3);
+ bezier_pos++;
+ // B3:
+ lppt[ bezier_pos ].x = XLOG2DEV(cx4);
+ lppt[ bezier_pos ].y = YLOG2DEV(cy4);
+ bezier_pos++;
+ cx1 = cx4;
+ cy1 = cy4;
+ }
+
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+ lppt[ bezier_pos ].x = XLOG2DEV(x2);
+ lppt[ bezier_pos ].y = YLOG2DEV(y2);
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+ ::PolyBezier( GetHdc(), lppt, bezier_pos );
+
+ free(lppt);
+#endif
+}
+#endif
+
// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
{
MemoryHDC hdcMem;
SelectInHDC select(hdcMem, GetHbitmapOf(bmp));
- if ( AlphaBlt(GetHdc(), x, y, width, height, hdcMem, bmp) )
+ if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, hdcMem, bmp) )
return;
}
SIZE sizeRect;
TEXTMETRIC tm;
- GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
+ ::GetTextExtentPoint32(GetHdc(), string, string.length(), &sizeRect);
GetTextMetrics(GetHdc(), &tm);
if (x)
static int maxWidth = -1;
int fit = 0;
SIZE sz = {0,0};
- int stlen = text.Length();
+ int stlen = text.length();
if (maxLenText == -1)
{
widths.Empty();
widths.Add(0, stlen); // fill the array with zeros
+ if (stlen == 0)
+ return true;
if (!::GetTextExtentExPoint(GetHdc(),
text.c_str(), // string to check
this->SetMapMode(m_mappingMode);
}
-void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
+void wxDC::SetAxisOrientation(bool WXUNUSED_IN_WINCE(xLeftRight),
+ bool WXUNUSED_IN_WINCE(yBottomUp))
{
WXMICROWIN_CHECK_HDC
SetMapMode(m_mappingMode);
}
-#else
- wxUnusedVar(xLeftRight);
- wxUnusedVar(yBottomUp);
#endif
}
(m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) )
{
if ( AlphaBlt(GetHdc(), xdest, ydest, width, height,
- GetHdcOf(*source), bmpSrc) )
+ xsrc, ysrc, GetHdcOf(*source), bmpSrc) )
return true;
}
static bool AlphaBlt(HDC hdcDst,
int x, int y, int width, int height,
- HDC hdcSrc,
+ int srcX, int srcY, HDC hdcSrc,
const wxBitmap& bmp)
{
wxASSERT_MSG( bmp.Ok() && bmp.HasAlpha(), _T("AlphaBlt(): invalid bitmap") );
bf.AlphaFormat = AC_SRC_ALPHA;
if ( pfnAlphaBlend(hdcDst, x, y, width, height,
- hdcSrc, 0, 0, width, height,
+ hdcSrc, srcX, srcY, width, height,
bf) )
{
// skip wxAlphaBlend() call below
wxLogLastError(_T("AlphaBlend"));
}
+#else
+ wxUnusedVar(hdcSrc);
#endif // defined(AC_SRC_OVER)
// AlphaBlend() unavailable of failed: use our own (probably much slower)
// implementation
#ifdef wxHAVE_RAW_BITMAP
- wxAlphaBlend(hdcDst, x, y, width, height, bmp);
+ wxAlphaBlend(hdcDst, x, y, width, height, srcX, srcY, bmp);
return true;
#else // !wxHAVE_RAW_BITMAP
#ifdef wxHAVE_RAW_BITMAP
static void
-wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSrc)
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst,
+ int w, int h,
+ int srcX, int srcY, const wxBitmap& bmpSrc)
{
// get the destination DC pixels
wxBitmap bmpDst(w, h, 32 /* force creating RGBA DIB */);
MemoryHDC hdcMem;
SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst));
- if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, 0, 0, SRCCOPY) )
+ if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, xDst, yDst, SRCCOPY) )
{
wxLogLastError(_T("BitBlt"));
}
wxAlphaPixelData::Iterator pDst(dataDst),
pSrc(dataSrc);
+ pSrc.Offset(dataSrc, srcX, srcY);
+
for ( int y = 0; y < h; y++ )
{
wxAlphaPixelData::Iterator pDstRowStart = pDst,
projects / wxWidgets.git / blobdiff