#include "wx/msw/private.h"
-#if !USE_SHARED_LIBRARY
IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
-#endif
// ---------------------------------------------------------------------------
// constants
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
// ===========================================================================
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;
- 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
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;
- if (m_textBackgroundColour.Ok())
+ if ( m_textBackgroundColour.Ok() )
{
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);
- // background colour is used only for DrawText, otherwise
- // always TRANSPARENT, RR
SetBkMode(GetHdc(), TRANSPARENT);
-
- CalcBoundingBox(x, y);
-
- wxCoord w, h;
- GetTextExtent(text, &w, &h);
- CalcBoundingBox((x + w), (y + h));
}
void wxDC::DoDrawRotatedText(const wxString& text,
wxCoord x, wxCoord y,
double angle)
{
- wxFAIL_MSG( _T("TODO") );
+ // 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)");
+ }
+
+ // 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));
+ }
}
// ---------------------------------------------------------------------------
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
}
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 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++)
::DeleteObject(brush);
}
}
- }
+*/
+ }
else
{
success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
projects / wxWidgets.git / blobdiff