#include "wx/icon.h"
#endif
+#include "wx/settings.h"
#include "wx/dcprint.h"
#include <string.h>
#include <print.h>
#endif
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
+IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
// ---------------------------------------------------------------------------
// constants
m_windowExtX = VIEWPORT_EXTENT;
m_windowExtY = VIEWPORT_EXTENT;
-
- m_hDCCount = 0;
}
wxDC::~wxDC()
{
- if ( m_hDC != 0 ) {
+ if ( m_hDC != 0 )
+ {
SelectOldObjects(m_hDC);
- if ( m_bOwnsDC ) {
- if ( m_canvas == NULL )
- ::DeleteDC(GetHdc());
+
+ // if we own the HDC, we delete it, otherwise we just release it
+
+ if ( m_bOwnsDC )
+ {
+ ::DeleteDC(GetHdc());
+ }
+ else // we don't own our HDC
+ {
+ if (m_canvas)
+ {
+ ::ReleaseDC(GetHwndOf(m_canvas), GetHdc());
+ }
else
- ::ReleaseDC((HWND)m_canvas->GetHWND(), GetHdc());
+ {
+ // Must have been a wxScreenDC
+ ::ReleaseDC((HWND) NULL, GetHdc());
+ }
}
}
-
}
// This will select current objects out of the DC,
// clipping
// ---------------------------------------------------------------------------
-#define DO_SET_CLIPPING_BOX() \
-{ \
- RECT rect; \
- \
- GetClipBox(GetHdc(), &rect); \
- \
- m_clipX1 = (wxCoord) XDEV2LOG(rect.left); \
- m_clipY1 = (wxCoord) YDEV2LOG(rect.top); \
- m_clipX2 = (wxCoord) XDEV2LOG(rect.right); \
- m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom); \
+void wxDC::UpdateClipBox()
+{
+ RECT rect;
+ GetClipBox(GetHdc(), &rect);
+
+ m_clipX1 = (wxCoord) XDEV2LOG(rect.left);
+ m_clipY1 = (wxCoord) YDEV2LOG(rect.top);
+ m_clipX2 = (wxCoord) XDEV2LOG(rect.right);
+ m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
}
-void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch)
+void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
m_clipping = TRUE;
- IntersectClipRect(GetHdc(), XLOG2DEV(cx), YLOG2DEV(cy),
- XLOG2DEV(cx + cw), YLOG2DEV(cy + ch));
- DO_SET_CLIPPING_BOX()
+
+ // the region coords are always the device ones, so do the translation
+ // manually
+ //
+ // FIXME: possible +/-1 error here, to check!
+ HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x),
+ LogicalToDeviceY(y),
+ LogicalToDeviceX(x + w),
+ LogicalToDeviceY(y + h));
+ if ( !hrgn )
+ {
+ wxLogLastError(_T("CreateRectRgn"));
+ }
+ else
+ {
+ if ( ::SelectClipRgn(GetHdc(), hrgn) == ERROR )
+ {
+ wxLogLastError(_T("SelectClipRgn"));
+ }
+
+ UpdateClipBox();
+ }
}
void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
{
- wxCHECK_RET( region.GetHRGN(), wxT("invalid clipping region") );
+ wxCHECK_RET( GetHrgnOf(region), wxT("invalid clipping region") );
m_clipping = TRUE;
#ifdef __WIN16__
- SelectClipRgn(GetHdc(), (HRGN) region.GetHRGN());
-#else
- ExtSelectClipRgn(GetHdc(), (HRGN) region.GetHRGN(), RGN_AND);
-#endif
+ SelectClipRgn(GetHdc(), GetHrgnOf(region));
+#else // Win32
+ ExtSelectClipRgn(GetHdc(), GetHrgnOf(region), RGN_AND);
+#endif // Win16/32
- DO_SET_CLIPPING_BOX()
+ UpdateClipBox();
}
void wxDC::DestroyClippingRegion()
SelectClipRgn(GetHdc(), rgn);
DeleteObject(rgn);
}
+
m_clipping = FALSE;
}
if ( useMask )
{
#ifdef __WIN32__
- HDC hdcMem = ::CreateCompatibleDC(GetHdc());
- ::SelectObject(hdcMem, GetHbitmapOf(bmp));
-
// use MaskBlt() with ROP which doesn't do anything to dst in the mask
// points
- bool ok = ::MaskBlt(GetHdc(), x, y, width, height,
+ // On some systems, MaskBlt succeeds yet is much much slower
+ // than the wxWindows fall-back implementation. So we need
+ // to be able to switch this on and off at runtime.
+ bool ok = FALSE;
+ if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0)
+ {
+ HDC hdcMem = ::CreateCompatibleDC(GetHdc());
+ ::SelectObject(hdcMem, GetHbitmapOf(bmp));
+
+ ok = ::MaskBlt(GetHdc(), x, y, width, height,
hdcMem, 0, 0,
hbmpMask, 0, 0,
MAKEROP4(SRCCOPY, DSTCOPY)) != 0;
- ::DeleteDC(hdcMem);
+ ::DeleteDC(hdcMem);
+ }
if ( !ok )
#endif // Win32
::SetBkMode(GetHdc(), TRANSPARENT);
else
::SetBkMode(GetHdc(), OPAQUE);
+ Last change: AC 29 Jan 101 8:54 pm
*/
}
SetROP2(GetHdc(), rop);
}
-bool wxDC::StartDoc(const wxString& message)
+bool wxDC::StartDoc(const wxString& WXUNUSED(message))
{
// We might be previewing, so return TRUE to let it continue.
return TRUE;
void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
wxCoord *descent, wxCoord *externalLeading,
- wxFont *theFont) const
+ wxFont *font) const
{
- wxFont *fontToUse = (wxFont*) theFont;
- if (!fontToUse)
- fontToUse = (wxFont*) &m_font;
+ HFONT hfontOld;
+ if ( font )
+ {
+ wxASSERT_MSG( font->Ok(), _T("invalid font in wxDC::GetTextExtent") );
+
+ hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
+ }
+ else // don't change the font
+ {
+ hfontOld = 0;
+ }
SIZE sizeRect;
TEXTMETRIC tm;
- GetTextExtentPoint(GetHdc(), WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect);
+ GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
GetTextMetrics(GetHdc(), &tm);
if (x) *x = XDEV2LOGREL(sizeRect.cx);
if (y) *y = YDEV2LOGREL(sizeRect.cy);
if (descent) *descent = tm.tmDescent;
if (externalLeading) *externalLeading = tm.tmExternalLeading;
+
+ if ( hfontOld )
+ {
+ ::SelectObject(GetHdc(), hfontOld);
+ }
}
void wxDC::SetMapMode(int mode)
wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
{
- return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
+ double xRel = x - m_deviceOriginX;
+ xRel /= m_logicalScaleX*m_userScaleX*m_signX*m_scaleX;
+ return (wxCoord)(xRel + m_logicalOriginX);
}
wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
{
- return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
+ double yRel = y - m_deviceOriginY;
+ yRel /= m_logicalScaleY*m_userScaleY*m_signY*m_scaleY;
+ return (wxCoord)(yRel + m_logicalOriginY);
}
wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
return FALSE;
}
- bool success;
+ bool success = FALSE;
if (useMask)
{
// transparent, so use "DSTCOPY" ROP for the mask points (the usual
// meaning of fg and bg is inverted which corresponds to wxWin notion
// of the mask which is also contrary to the Windows one)
- success = ::MaskBlt(GetHdc(), xdest, ydest, width, height,
+
+ // On some systems, MaskBlt succeeds yet is much much slower
+ // than the wxWindows fall-back implementation. So we need
+ // to be able to switch this on and off at runtime.
+ if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0)
+ {
+ success = ::MaskBlt(GetHdc(), xdest, ydest, width, height,
GetHdcOf(*source), xsrc, ysrc,
- (HBITMAP)mask->GetMaskBitmap(), 0, 0,
+ (HBITMAP)mask->GetMaskBitmap(), xsrc, ysrc,
MAKEROP4(dwRop, DSTCOPY)) != 0;
+ }
if ( !success )
#endif // Win32
}
#endif
-// ---------------------------------------------------------------------------
-// spline drawing code
-// ---------------------------------------------------------------------------
-
-#if wxUSE_SPLINES
-
-class wxSpline: public wxObject
-{
-public:
- int type;
- wxList *points;
-
- wxSpline(wxList *list);
- void DeletePoints();
-
- // Doesn't delete points
- ~wxSpline();
-};
-
-void wx_draw_open_spline(wxDC *dc, wxSpline *spline);
-
-void wx_quadratic_spline(double a1, double b1, double a2, double b2,
- double a3, double b3, double a4, double b4);
-void wx_clear_stack();
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
- double *y3, double *x4, double *y4);
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
- double x4, double y4);
-static bool wx_spline_add_point(double x, double y);
-static void wx_spline_draw_point_array(wxDC *dc);
-wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3);
-
-void wxDC::DoDrawSpline(wxList *list)
-{
- wxSpline spline(list);
-
- wx_draw_open_spline(this, &spline);
-}
-
-wxList wx_spline_point_list;
-
-void wx_draw_open_spline(wxDC *dc, wxSpline *spline)
-{
- wxPoint *p;
- double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
- double x1, y1, x2, y2;
-
- wxNode *node = spline->points->First();
- p = (wxPoint *)node->Data();
-
- x1 = p->x;
- y1 = p->y;
-
- node = node->Next();
- p = (wxPoint *)node->Data();
-
- x2 = p->x;
- y2 = p->y;
- cx1 = (double)((x1 + x2) / 2);
- cy1 = (double)((y1 + y2) / 2);
- cx2 = (double)((cx1 + x2) / 2);
- cy2 = (double)((cy1 + y2) / 2);
-
- wx_spline_add_point(x1, y1);
-
- while ((node = node->Next()) != NULL)
- {
- p = (wxPoint *)node->Data();
- x1 = x2;
- y1 = y2;
- x2 = p->x;
- y2 = p->y;
- cx4 = (double)(x1 + x2) / 2;
- cy4 = (double)(y1 + y2) / 2;
- cx3 = (double)(x1 + cx4) / 2;
- cy3 = (double)(y1 + cy4) / 2;
-
- wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
-
- cx1 = cx4;
- cy1 = cy4;
- cx2 = (double)(cx1 + x2) / 2;
- cy2 = (double)(cy1 + y2) / 2;
- }
-
- wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1));
- wx_spline_add_point(x2, y2);
-
- wx_spline_draw_point_array(dc);
-
-}
-
-/********************* CURVES FOR SPLINES *****************************
-
- The following spline drawing routine is from
-
- "An Algorithm for High-Speed Curve Generation"
- by George Merrill Chaikin,
- Computer Graphics and Image Processing, 3, Academic Press,
- 1974, 346-349.
-
- and
-
- "On Chaikin's Algorithm" by R. F. Riesenfeld,
- Computer Graphics and Image Processing, 4, Academic Press,
- 1975, 304-310.
-
-***********************************************************************/
-
-#define half(z1, z2) ((z1+z2)/2.0)
-#define THRESHOLD 5
-
-/* iterative version */
-
-void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
- double b4)
-{
- register double xmid, ymid;
- double x1, y1, x2, y2, x3, y3, x4, y4;
-
- wx_clear_stack();
- wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
-
- while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
- xmid = (double)half(x2, x3);
- ymid = (double)half(y2, y3);
- if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
- fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
- wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1));
- wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid));
- } else {
- wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
- (double)half(x3, x4), (double)half(y3, y4), x4, y4);
- wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
- (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
- }
- }
-}
-
-
-/* utilities used by spline drawing routines */
-
-
-typedef struct wx_spline_stack_struct {
- double x1, y1, x2, y2, x3, y3, x4, y4;
-}
-Stack;
-
-#define SPLINE_STACK_DEPTH 20
-static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
-static Stack *wx_stack_top;
-static int wx_stack_count;
-
-void wx_clear_stack()
-{
- wx_stack_top = wx_spline_stack;
- wx_stack_count = 0;
-}
-
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
-{
- wx_stack_top->x1 = x1;
- wx_stack_top->y1 = y1;
- wx_stack_top->x2 = x2;
- wx_stack_top->y2 = y2;
- wx_stack_top->x3 = x3;
- wx_stack_top->y3 = y3;
- wx_stack_top->x4 = x4;
- wx_stack_top->y4 = y4;
- wx_stack_top++;
- wx_stack_count++;
-}
-
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
- double *x3, double *y3, double *x4, double *y4)
-{
- if (wx_stack_count == 0)
- return (0);
- wx_stack_top--;
- wx_stack_count--;
- *x1 = wx_stack_top->x1;
- *y1 = wx_stack_top->y1;
- *x2 = wx_stack_top->x2;
- *y2 = wx_stack_top->y2;
- *x3 = wx_stack_top->x3;
- *y3 = wx_stack_top->y3;
- *x4 = wx_stack_top->x4;
- *y4 = wx_stack_top->y4;
- return (1);
-}
-
-static bool wx_spline_add_point(double x, double y)
-{
- wxPoint *point = new wxPoint;
- point->x = (int) x;
- point->y = (int) y;
- wx_spline_point_list.Append((wxObject*)point);
- return TRUE;
-}
-
-static void wx_spline_draw_point_array(wxDC *dc)
-{
- dc->DrawLines(&wx_spline_point_list, 0, 0);
- wxNode *node = wx_spline_point_list.First();
- while (node)
- {
- wxPoint *point = (wxPoint *)node->Data();
- delete point;
- delete node;
- node = wx_spline_point_list.First();
- }
-}
-
-wxSpline::wxSpline(wxList *list)
-{
- points = list;
-}
-
-wxSpline::~wxSpline()
-{
-}
-
-void wxSpline::DeletePoints()
-{
- for(wxNode *node = points->First(); node; node = points->First())
- {
- wxPoint *point = (wxPoint *)node->Data();
- delete point;
- delete node;
- }
- delete points;
-}
-
-
-#endif // wxUSE_SPLINES
projects / wxWidgets.git / blobdiff