#include "wx/list.h" // we use wxList in inline functions
+class WXDLLEXPORT wxDCBase;
+
+class WXDLLEXPORT wxDrawObject
+{
+public:
+
+ wxDrawObject()
+ {
+ ResetBoundingBox();
+ }
+
+ virtual ~wxDrawObject() { }
+
+ virtual void Draw(wxDCBase&) const { }
+
+ virtual void CalcBoundingBox(wxCoord x, wxCoord y)
+ {
+ if ( m_isBBoxValid )
+ {
+ if ( x < m_minX ) m_minX = x;
+ if ( y < m_minY ) m_minY = y;
+ if ( x > m_maxX ) m_maxX = x;
+ if ( y > m_maxY ) m_maxY = y;
+ }
+ else
+ {
+ m_isBBoxValid = TRUE;
+
+ m_minX = x;
+ m_minY = y;
+ m_maxX = x;
+ m_maxY = y;
+ }
+ }
+
+ void ResetBoundingBox()
+ {
+ m_isBBoxValid = FALSE;
+
+ m_minX = m_maxX = m_minY = m_maxY = 0;
+ }
+
+ // Get the final bounding box of the PostScript or Metafile picture.
+
+ wxCoord MinX() const { return m_minX; }
+ wxCoord MaxX() const { return m_maxX; }
+ wxCoord MinY() const { return m_minY; }
+ wxCoord MaxY() const { return m_maxY; }
+
+ //to define the type of object for derived objects
+ virtual int GetType()=0;
+
+protected:
+ //for boundingbox calculation
+ bool m_isBBoxValid:1;
+ //for boundingbox calculation
+ wxCoord m_minX, m_minY, m_maxX, m_maxY;
+};
+
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
class WXDLLEXPORT wxDCBase : public wxObject
{
- DECLARE_ABSTRACT_CLASS(wxDCBase)
-
public:
wxDCBase()
{
m_clipping = FALSE;
m_ok = TRUE;
- m_minX = m_minY = m_maxX = m_maxY = 0;
+ ResetBoundingBox();
m_signX = m_signY = 1;
m_userScaleX = m_userScaleY =
m_scaleX = m_scaleY = 1.0;
- m_logicalFunction = -1;
+ m_logicalFunction = wxCOPY;
m_backgroundMode = wxTRANSPARENT;
// graphic primitives
// ------------------
+ virtual void DrawObject(wxDrawObject* drawobject)
+ {
+ drawobject->Draw(*this);
+ CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
+ CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
+ }
+
void FloodFill(wxCoord x, wxCoord y, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ DoFloodFill(x, y, col, style); }
void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
{ DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
+ void DrawCheckMark(wxCoord x, wxCoord y,
+ wxCoord width, wxCoord height)
+ { DoDrawCheckMark(x, y, width, height); }
+ void DrawCheckMark(const wxRect& rect)
+ { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
+
void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
double sa, double ea)
{ DoDrawEllipticArc(x, y, w, h, sa, ea); }
void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
{ DoDrawRotatedText(text, pt.x, pt.y, angle); }
+ // this version puts both optional bitmap and the text into the given
+ // rectangle and aligns is as specified by alignment parameter; it also
+ // will emphasize the character with the given index if it is != -1 and
+ // return the bounding rectangle if required
+ virtual void DrawLabel(const wxString& text,
+ const wxBitmap& image,
+ const wxRect& rect,
+ int alignment = wxALIGN_LEFT | wxALIGN_TOP,
+ int indexAccel = -1,
+ wxRect *rectBounding = NULL);
+
+ void DrawLabel(const wxString& text, const wxRect& rect,
+ int alignment = wxALIGN_LEFT | wxALIGN_TOP,
+ int indexAccel = -1)
+ { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
+
bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
wxDC *source, wxCoord xsrc, wxCoord ysrc,
int rop = wxCOPY, bool useMask = FALSE)
virtual wxCoord GetCharHeight() const = 0;
virtual wxCoord GetCharWidth() const = 0;
-
+
+ // only works for single line strings
void GetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
wxFont *theFont = NULL) const
{ DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
+ // works for single as well as multi-line strings
+ virtual void GetMultiLineTextExtent(const wxString& text,
+ wxCoord *width,
+ wxCoord *height,
+ wxCoord *heightLine = NULL,
+ wxFont *font = NULL);
+
// size and resolution
// -------------------
// ---------
// const...
+ int GetBackgroundMode() const { return m_backgroundMode; }
const wxBrush& GetBackground() const { return m_backgroundBrush; }
const wxBrush& GetBrush() const { return m_brush; }
const wxFont& GetFont() const { return m_font; }
virtual void CalcBoundingBox(wxCoord x, wxCoord y)
{
- if ( x < m_minX ) m_minX = x;
- if ( y < m_minY ) m_minY = y;
- if ( x > m_maxX ) m_maxX = x;
- if ( y > m_maxY ) m_maxY = y;
+ if ( m_isBBoxValid )
+ {
+ if ( x < m_minX ) m_minX = x;
+ if ( y < m_minY ) m_minY = y;
+ if ( x > m_maxX ) m_maxX = x;
+ if ( y > m_maxY ) m_maxY = y;
+ }
+ else
+ {
+ m_isBBoxValid = TRUE;
+
+ m_minX = x;
+ m_minY = y;
+ m_maxX = x;
+ m_maxY = y;
+ }
+ }
+
+ void ResetBoundingBox()
+ {
+ m_isBBoxValid = FALSE;
+
+ m_minX = m_maxX = m_minY = m_maxY = 0;
}
// Get the final bounding box of the PostScript or Metafile picture.
*y = y2;
}
void GetClippingBox(long *x, long *y, long *w, long *h) const
- {
- wxCoord xx,yy,ww,hh;
- DoGetClippingBox(&xx, &yy, &ww, &hh);
- if (x) *x = xx;
- if (y) *y = yy;
- if (w) *w = ww;
- if (h) *h = hh;
+ {
+ wxCoord xx,yy,ww,hh;
+ DoGetClippingBox(&xx, &yy, &ww, &hh);
+ if (x) *x = xx;
+ if (y) *y = yy;
+ if (w) *w = ww;
+ if (h) *h = hh;
}
#endif // !Win16
virtual void DoDrawArc(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord xc, wxCoord yc) = 0;
+ virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
+ wxCoord width, wxCoord height);
virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
double sa, double ea) = 0;
wxFont *theFont = NULL) const = 0;
#if wxUSE_SPLINES
- virtual void DoDrawSpline(wxList *points) = 0;
+ virtual void DoDrawSpline(wxList *points);
#endif
protected:
bool m_ok:1;
bool m_clipping:1;
bool m_isInteractive:1;
+ bool m_isBBoxValid:1;
// coordinate system variables
wxPalette m_palette;
private:
- DECLARE_NO_COPY_CLASS(wxDCBase);
+ DECLARE_NO_COPY_CLASS(wxDCBase)
+ DECLARE_ABSTRACT_CLASS(wxDCBase)
};
// ----------------------------------------------------------------------------
#include "wx/motif/dc.h"
#elif defined(__WXGTK__)
#include "wx/gtk/dc.h"
+#elif defined(__WXMGL__)
+ #include "wx/mgl/dc.h"
#elif defined(__WXQT__)
#include "wx/qt/dc.h"
#elif defined(__WXMAC__)
#include "wx/stubs/dc.h"
#endif
+// ----------------------------------------------------------------------------
+// helper class: you can use it to temporarily change the DC text colour and
+// restore it automatically when the object goes out of scope
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDCTextColourChanger
+{
+public:
+ wxDCTextColourChanger(wxDC& dc) : m_dc(dc) { }
+
+ ~wxDCTextColourChanger()
+ {
+ if ( m_colFgOld.Ok() )
+ m_dc.SetTextForeground(m_colFgOld);
+ }
+
+ void Set(const wxColour& col)
+ {
+ if ( !m_colFgOld.Ok() )
+ m_colFgOld = m_dc.GetTextForeground();
+ m_dc.SetTextForeground(col);
+ }
+
+private:
+ wxDC& m_dc;
+
+ wxColour m_colFgOld;
+};
+
+// ----------------------------------------------------------------------------
+// another small helper class: sets the clipping region in its ctor and
+// destroys it in the dtor
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDCClipper
+{
+public:
+ wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc)
+ { dc.SetClippingRegion(r.x, r.y, r.width, r.height); }
+ wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc)
+ { dc.SetClippingRegion(x, y, w, h); }
+
+ ~wxDCClipper() { m_dc.DestroyClippingRegion(); }
+
+private:
+ wxDC& m_dc;
+};
+
#endif
// _WX_DC_H_BASE_
projects / wxWidgets.git / blobdiff