// convert degrees to radians
static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// instead of duplicating the same code which sets and then restores text
+// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes,
+// encapsulate this in a small helper class
+
+// wxColourChanger: changes the text colours in the ctor if required and
+// restores them in the dtor
+class wxColourChanger
+{
+public:
+ wxColourChanger(wxDC& dc);
+ ~wxColourChanger();
+
+private:
+ wxDC& m_dc;
+
+ COLORREF m_colFgOld, m_colBgOld;
+
+ bool m_changed;
+};
+
// ===========================================================================
// implementation
// ===========================================================================
+// ----------------------------------------------------------------------------
+// wxColourChanger
+// ----------------------------------------------------------------------------
+
+wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc)
+{
+ if ( dc.GetBrush().GetStyle() == wxSTIPPLE_MASK_OPAQUE )
+ {
+ HDC hdc = GetHdcOf(dc);
+ m_colFgOld = ::GetTextColor(hdc);
+ m_colBgOld = ::GetBkColor(hdc);
+
+ // note that Windows convention is opposite to wxWindows one, this is
+ // why text colour becomes the background one and vice versa
+ const wxColour& colFg = dc.GetTextForeground();
+ if ( colFg.Ok() )
+ {
+ ::SetBkColor(hdc, colFg.GetPixel());
+ }
+
+ const wxColour& colBg = dc.GetTextBackground();
+ if ( colBg.Ok() )
+ {
+ ::SetTextColor(hdc, colBg.GetPixel());
+ }
+
+ SetBkMode(hdc,
+ dc.GetBackgroundMode() == wxTRANSPARENT ? TRANSPARENT
+ : OPAQUE);
+
+ // flag which telsl us to undo changes in the dtor
+ m_changed = TRUE;
+ }
+ else
+ {
+ // nothing done, nothing to undo
+ m_changed = FALSE;
+ }
+}
+
+wxColourChanger::~wxColourChanger()
+{
+ if ( m_changed )
+ {
+ // restore the colours we changed
+ HDC hdc = GetHdcOf(m_dc);
+
+ ::SetBkMode(hdc, TRANSPARENT);
+ ::SetTextColor(hdc, m_colFgOld);
+ ::SetBkColor(hdc, m_colBgOld);
+ }
+}
+
// ---------------------------------------------------------------------------
// wxDC
// ---------------------------------------------------------------------------
// * The point is outside the clipping region that is, it is not
// visible on the device.
//
- wxLogLastError("ExtFloodFill");
+ wxLogLastError(wxT("ExtFloodFill"));
}
CalcBoundingBox(x, y);
bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
{
+ wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") );
+
// get the color of the pixel
COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
- // JACS: what was this for?
-#if 0
- // get the color of the pen
- COLORREF pencolor = 0x00ffffff;
- if (m_pen.Ok())
- {
- pencolor = m_pen.GetColour().GetPixel();
- }
-#endif
-
- // return the color of the pixel
- if( col )
- {
- col->Set(GetRValue(pixelcolor),
- GetGValue(pixelcolor),
- GetBValue(pixelcolor));
- }
-
- // check, if color of the pixels is the same as the color of the current
- // pen and return TRUE if it is, FALSE otherwise
- // JACS, 24/02/2000: can't understand the reason for this, so returning TRUE instead.
- // return pixelcolor == pencolor;
+ wxRGBToColour(*col, pixelcolor);
return TRUE;
}
CalcBoundingBox(x2, y2);
}
-void wxDC::DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2, wxCoord xc, wxCoord yc)
+// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
+// and ending at (x2, y2)
+void wxDC::DoDrawArc(wxCoord x1, wxCoord y1,
+ wxCoord x2, wxCoord y2,
+ wxCoord xc, wxCoord yc)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE)
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
-
- if (m_textForegroundColour.Ok())
- { //just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel() );
- }
- if (m_textBackgroundColour.Ok())
- { //just the oposite from what is expected
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel() );
- }
-
- if (m_backgroundMode == wxTRANSPARENT)
- SetBkMode(GetHdc(), TRANSPARENT);
- else
- SetBkMode(GetHdc(), OPAQUE);
- }
+ double dx = xc - x1;
+ double dy = yc - y1;
+ double radius = (double)sqrt(dx*dx+dy*dy);
+ wxCoord r = (wxCoord)radius;
- double dx = xc-x1;
- double dy = yc-y1;
- double radius = (double)sqrt(dx*dx+dy*dy) ;;
- if (x1==x2 && x2==y2)
+ // treat the special case of full circle separately
+ if ( x1 == x2 && y1 == y2 )
{
- DrawEllipse(xc,yc,(wxCoord)(radius*2.0),(wxCoord)(radius*2.0));
+ DrawEllipse(xc - r, yc - r, 2*r, 2*r);
return;
}
wxCoord yyc = YLOG2DEV(yc);
wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1)));
- (void)MoveToEx(GetHdc(), (int) xx1, (int) yy1, NULL);
wxCoord xxx1 = (wxCoord) (xxc-ray);
wxCoord yyy1 = (wxCoord) (yyc-ray);
wxCoord xxx2 = (wxCoord) (xxc+ray);
wxCoord yyy2 = (wxCoord) (yyc+ray);
- if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT)
+
+ if ( m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT )
{
// Have to add 1 to bottom-right corner of rectangle
// to make semi-circles look right (crooked line otherwise).
// Unfortunately this is not a reliable method, depends
// on the size of shape.
// TODO: figure out why this happens!
- Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1,
- xx1,yy1,xx2,yy2);
+ Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2);
}
else
- Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2,
- xx1,yy1,xx2,yy2);
-
- CalcBoundingBox((wxCoord)(xc-radius), (wxCoord)(yc-radius));
- CalcBoundingBox((wxCoord)(xc+radius), (wxCoord)(yc+radius));
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
{
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
+ Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2);
}
+
+ CalcBoundingBox(xc - r, yc - r);
+ CalcBoundingBox(xc + r, yc + r);
}
void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
-
- if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE)
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
-
- if (m_textForegroundColour.Ok())
- { //just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel() );
- }
- if (m_textBackgroundColour.Ok())
- { //just the oposite from what is expected
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel() );
- }
-
- if (m_backgroundMode == wxTRANSPARENT)
- SetBkMode(GetHdc(), TRANSPARENT);
- else
- SetBkMode(GetHdc(), OPAQUE);
- }
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
// Do things less efficiently if we have offsets
if (xoffset != 0 || yoffset != 0)
(void)Polygon(GetHdc(), (POINT*) points, n);
SetPolyFillMode(GetHdc(),prev);
}
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
- }
}
void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
-
- if ( m_textForegroundColour.Ok() )
- {
- // just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel());
- }
-
- if ( m_textBackgroundColour.Ok() )
- {
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel());
- }
-
- // VZ: IMHO this does strictly nothing here
- SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
- : OPAQUE);
- }
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
wxCoord x2 = x + width;
wxCoord y2 = y + height;
{
// Windows draws the filled rectangles without outline (i.e. drawn with a
// transparent pen) one pixel smaller in both directions and we want them
- // to have the same size regardless of which pen is used - adjust
+ // to have the same size regardless of which pen is used - adjust
// I wonder if this shouldn´t be done after the LOG2DEV() conversions. RR.
if ( m_pen.GetStyle() == wxTRANSPARENT )
y2++;
}
- (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
+ (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
}
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
- }
}
void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
-
- if ( m_textForegroundColour.Ok() )
- {
- // just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel());
- }
-
- if ( m_textBackgroundColour.Ok() )
- {
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel());
- }
-
- // VZ: IMHO this does strictly nothing here
- SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
- : OPAQUE);
- }
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
// Now, a negative radius value is interpreted to mean
// 'the proportion of the smallest X or Y dimension'
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
- }
}
void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
-
- if ( m_textForegroundColour.Ok() )
- {
- // just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel());
- }
-
- if ( m_textBackgroundColour.Ok() )
- {
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel());
- }
-
- // VZ: IMHO this does strictly nothing here
- SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
- : OPAQUE);
- }
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
wxCoord x2 = (x+width);
wxCoord y2 = (y+height);
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
- }
}
// 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)
{
- COLORREF colFgOld = 0,
- colBgOld = 0;
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- colFgOld = ::GetTextColor(GetHdc());
- colBgOld = ::GetBkColor(GetHdc());
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- if ( m_textForegroundColour.Ok() )
- {
- // just the oposite from what is expected see help on pattern brush
- // 1 in mask becomes bk color
- ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel());
- }
-
- if ( m_textBackgroundColour.Ok() )
- {
- // 0 in mask becomes text color
- ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel());
- }
-
- // VZ: IMHO this does strictly nothing here
- SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
- : OPAQUE);
- }
-
- wxCoord x2 = (x+w);
- wxCoord y2 = (y+h);
+ wxCoord x2 = x + w;
+ wxCoord y2 = y + h;
int rx1 = XLOG2DEV(x+w/2);
int ry1 = YLOG2DEV(y+h/2);
// draw pie with NULL_PEN first and then outline otherwise a line is
// drawn from the start and end points to the centre
- HPEN orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
+ HPEN hpenOld = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
if (m_signY > 0)
{
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
- rx1, ry1, rx2, ry2);
+ rx1, ry1, rx2, ry2);
}
else
{
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
- rx1, ry1-1, rx2, ry2-1);
+ rx1, ry1-1, rx2, ry2-1);
}
- ::SelectObject(GetHdc(), orig_pen);
+
+ ::SelectObject(GetHdc(), hpenOld);
+
(void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
- rx1, ry1, rx2, ry2);
+ rx1, ry1, rx2, ry2);
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
- {
- // restore the colours we changed
- ::SetBkMode(GetHdc(), TRANSPARENT);
- ::SetTextColor(GetHdc(), colFgOld);
- ::SetBkColor(GetHdc(), colBgOld);
- }
}
void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
{
wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") );
+#ifdef __WIN32__
+ ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL);
+#else
::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon));
+#endif
CalcBoundingBox(x, y);
CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight());
if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
text.c_str(), text.length()) == 0 )
{
- wxLogLastError("TextOut");
+ wxLogLastError(wxT("TextOut"));
}
// restore the old parameters (text foreground colour may be left because
LOGFONT lf;
if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
{
- wxLogLastError("GetObject(hfont)");
+ wxLogLastError(wxT("GetObject(hfont)"));
}
// GDI wants the angle in tenth of degree
hfont = ::CreateFontIndirect(&lf);
if ( !hfont )
{
- wxLogLastError("CreateFont");
+ wxLogLastError(wxT("CreateFont"));
}
else
{
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
GetHdc(), xdest, ydest, SRCCOPY) )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
// copy src to buffer using selected raster op
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
GetHdcOf(*source), xsrc, ysrc, dwRop) )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
// set masked area in buffer to BLACK (pixel value 0)
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
dc_mask, xsrc, ysrc, SRCAND) )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
// set unmasked area in dest to BLACK
if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height,
dc_mask, xsrc, ysrc, SRCAND) )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
::SetTextColor(GetHdc(), prevCol);
dc_buffer, 0, 0, SRCPAINT) != 0;
if ( !success )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
// tidy up temporary DCs and bitmap
GetHdcOf(*source), xsrc, ysrc, dwRop) != 0;
if ( !success )
{
- wxLogLastError("BitBlt");
+ wxLogLastError(wxT("BitBlt"));
}
}
::SetTextColor(GetHdc(), old_textground);
projects / wxWidgets.git / blobdiff