X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/af0bb3b161bc687d4a53a83c930c807bfa300a2d..f42b1601d6a55f3c2b7e7c22894727bda70d8505:/src/motif/dcclient.cpp?ds=sidebyside diff --git a/src/motif/dcclient.cpp b/src/motif/dcclient.cpp index 8336c61a64..bda0770424 100644 --- a/src/motif/dcclient.cpp +++ b/src/motif/dcclient.cpp @@ -127,6 +127,7 @@ wxWindowDC::wxWindowDC( wxWindow *window ) wxASSERT_MSG( (window != (wxWindow*) NULL), "You must pass a valid wxWindow to wxWindowDC/wxClientDC/wxPaintDC constructor." ); m_window = window; + m_font = window->GetFont(); m_gc = (WXGC) 0; m_gcBacking = (WXGC) 0; m_backgroundPixel = -1; @@ -1180,8 +1181,8 @@ void wxWindowDC::GetTextExtent( const wxString &string, long *width, long *heigh // TODO: this should be an error log function wxFAIL_MSG("set a valid font before calling GetTextExtent!"); - *width = -1; - *height = -1; + if (width) *width = -1; + if (height) *height = -1; return; } @@ -1207,8 +1208,8 @@ void wxWindowDC::GetTextExtent( const wxString &string, long *width, long *heigh XTextExtents((XFontStruct*) pFontStruct, (char*) (const char*) string, slen, &direction, &ascent, &descent2, &overall); - *width = XDEV2LOGREL (overall.width); - *height = YDEV2LOGREL (ascent + descent2); + if (width) *width = XDEV2LOGREL (overall.width); + if (height) *height = YDEV2LOGREL (ascent + descent2); if (descent) *descent = descent2; if (externalLeading) @@ -1992,7 +1993,7 @@ void wxWindowDC::SetDCClipping() void wxWindowDC::DoSetClippingRegion( long x, long y, long width, long height ) { - wxDC::SetClippingRegion( x, y, width, height ); + wxDC::DoSetClippingRegion( x, y, width, height ); if (m_userRegion) XDestroyRegion ((Region) m_userRegion); @@ -2023,7 +2024,7 @@ void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion& region ) { wxRect box = region.GetBox(); - wxDC::SetClippingRegion( box.x, box.y, box.width, box.height ); + wxDC::DoSetClippingRegion( box.x, box.y, box.width, box.height ); if (m_userRegion) XDestroyRegion ((Region) m_userRegion); @@ -2075,6 +2076,178 @@ int wxWindowDC::GetDepth() const return 24; } +#if wxUSE_SPLINES +// ----------------------------------- spline code ---------------------------------------- + +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); + +wxList wx_spline_point_list; + +#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( x1, y1 ); + wx_spline_add_point( xmid, 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(); + } +} + +void wxWindowDC::DoDrawSpline( wxList *points ) +{ + wxCHECK_RET( Ok(), _T("invalid window dc") ); + + wxPoint *p; + double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; + double x1, y1, x2, y2; + + wxNode *node = 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( cx1, cy1 ); + wx_spline_add_point( x2, y2 ); + + wx_spline_draw_point_array( this ); +} + +#endif // wxUSE_SPLINE + + + // ---------------------------------------------------------------------------- // wxPaintDC // ----------------------------------------------------------------------------