wxWidgets/include/wx/dc.h
Vadim Zeitlin 006162a9e9 wxGetFullHostName() implemented - it doesn't work though (and won't even
compile under Win16 I think - TODO)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2775 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-06-14 00:00:47 +00:00

557 lines
19 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose: wxDC class
// Author: Vadim Zeitlin
// Modified by:
// Created: 05/25/99
// RCS-ID: $Id$
// Copyright: (c) wxWindows team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DC_H_BASE_
#define _WX_DC_H_BASE_
#ifdef __GNUG__
#pragma interface "dcbase.h"
#endif
// ----------------------------------------------------------------------------
// headers which we must include here
// ----------------------------------------------------------------------------
#include "wx/object.h" // the base class
#include "wx/cursor.h" // we have member variables of these classes
#include "wx/font.h" // so we can't do without them
#include "wx/colour.h"
#include "wx/brush.h"
#include "wx/pen.h"
#include "wx/palette.h"
#include "wx/list.h" // we use wxList in inline functions
// ---------------------------------------------------------------------------
// types
// ---------------------------------------------------------------------------
// type which should be used (whenever possible, i.e. as long as it doesn't
// break compatibility) for screen coordinates
typedef int wxCoord;
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
WXDLLEXPORT_DATA(extern int) wxPageNumber;
// ---------------------------------------------------------------------------
// wxDC is the device context - object on which any drawing is done
// ---------------------------------------------------------------------------
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;
m_signX = m_signY = 1;
m_logicalOriginX = m_logicalOriginY =
m_deviceOriginX = m_deviceOriginY = 0;
m_logicalScaleX = m_logicalScaleY =
m_userScaleX = m_userScaleY =
m_scaleX = m_scaleY = 1.0;
m_logicalFunction = -1;
m_backgroundMode = wxTRANSPARENT;
m_mappingMode = wxMM_TEXT;
m_backgroundBrush = *wxTRANSPARENT_BRUSH;
m_textForegroundColour = *wxBLACK;
m_textBackgroundColour = *wxWHITE;
m_colour = wxColourDisplay();
}
~wxDCBase() { }
virtual void BeginDrawing() { }
virtual void EndDrawing() { }
// graphic primitives
// ------------------
void FloodFill(long x, long y, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ DoFloodFill(x, y, col, style); }
void FloodFill(const wxPoint& pt, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ DoFloodFill(pt.x, pt.y, col, style); }
bool GetPixel(long x, long y, wxColour *col) const
{ return DoGetPixel(x, y, col); }
bool GetPixel(const wxPoint& pt, wxColour *col) const
{ return DoGetPixel(pt.x, pt.y, col); }
void DrawLine(long x1, long y1, long x2, long y2)
{ DoDrawLine(x1, y1, x2, y2); }
void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
{ DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
void CrossHair(long x, long y)
{ DoCrossHair(x, y); }
void CrossHair(const wxPoint& pt)
{ DoCrossHair(pt.x, pt.y); }
void DrawArc(long x1, long y1, long x2, long y2, long xc, long yc)
{ DoDrawArc(x1, y1, x2, y2, xc, yc); }
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 DrawEllipticArc(long x, long y, long w, long h, double sa, double ea)
{ DoDrawEllipticArc(x, y, w, h, sa, ea); }
void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
double sa, double ea)
{ DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
void DrawPoint(long x, long y)
{ DoDrawPoint(x, y); }
void DrawPoint(const wxPoint& pt)
{ DoDrawPoint(pt.x, pt.y); }
void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0)
{ DoDrawLines(n, points, xoffset, yoffset); }
void DrawLines(const wxList *list, long xoffset = 0, long yoffset = 0);
void DrawPolygon(int n, wxPoint points[],
long xoffset = 0, long yoffset = 0,
int fillStyle = wxODDEVEN_RULE)
{ DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
void DrawPolygon(const wxList *list,
long xoffset = 0, long yoffset = 0,
int fillStyle = wxODDEVEN_RULE);
void DrawRectangle(long x, long y, long width, long height)
{ DoDrawRectangle(x, y, width, height); }
void DrawRectangle(const wxPoint& pt, const wxSize& sz)
{ DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
void DrawRectangle(const wxRect& rect)
{ DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
void DrawRoundedRectangle(long x, long y, long width, long height,
double radius)
{ DoDrawRoundedRectangle(x, y, width, height, radius); }
void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
double radius)
{ DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
void DrawRoundedRectangle(const wxRect& r, double radius)
{ DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
void DrawCircle(long x, long y, long radius)
{ DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
void DrawEllipse(long x, long y, long width, long height)
{ DoDrawEllipse(x, y, width, height); }
void DrawEllipse(const wxPoint& pt, const wxSize& sz)
{ DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
void DrawEllipse(const wxRect& rect)
{ DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
void DrawIcon(const wxIcon& icon, long x, long y)
{ DoDrawIcon(icon, x, y); }
void DrawIcon(const wxIcon& icon, const wxPoint& pt)
{ DoDrawIcon(icon, pt.x, pt.y); }
void DrawBitmap(const wxBitmap &bmp, long x, long y, bool useMask = FALSE)
{ DoDrawBitmap(bmp, x, y, useMask); }
void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
bool useMask = FALSE)
{ DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
void DrawText(const wxString& text, long x, long y)
{ DoDrawText(text, x, y); }
void DrawText(const wxString& text, const wxPoint& pt)
{ DoDrawText(text, pt.x, pt.y); }
bool Blit(long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc,
int rop = wxCOPY, bool useMask = FALSE)
{
return DoBlit(xdest, ydest, width, height,
source, xsrc, ysrc, rop, useMask);
}
bool Blit(const wxPoint& destPt, const wxSize& sz,
wxDC *source, const wxPoint& srcPt,
int rop = wxCOPY, bool useMask = FALSE)
{
return DoBlit(destPt.x, destPt.y, sz.x, sz.y,
source, srcPt.x, srcPt.y, rop, useMask);
}
#if wxUSE_SPLINES
// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3);
void DrawSpline(int n, wxPoint points[]);
void DrawSpline(wxList *points) { DoDrawSpline(points); }
#endif // wxUSE_SPLINES
// global DC operations
// --------------------
virtual void Clear() = 0;
virtual bool StartDoc(const wxString& WXUNUSED(message)) { return TRUE; }
virtual void EndDoc() { }
virtual void StartPage() { }
virtual void EndPage() { }
// set objects to use for drawing
// ------------------------------
virtual void SetFont(const wxFont& font) = 0;
virtual void SetPen(const wxPen& pen) = 0;
virtual void SetBrush(const wxBrush& brush) = 0;
virtual void SetBackground(const wxBrush& brush) = 0;
virtual void SetBackgroundMode(int mode) = 0;
virtual void SetPalette(const wxPalette& palette) = 0;
// clipping region
// ---------------
void SetClippingRegion(long x, long y, long width, long height)
{ DoSetClippingRegion(x, y, width, height); }
void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
{ DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
void SetClippingRegion(const wxRect& rect)
{ DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
void SetClippingRegion(const wxRegion& region)
{ DoSetClippingRegionAsRegion(region); }
virtual void DestroyClippingRegion() = 0;
void GetClippingBox(long *x, long *y, long *w, long *h) const
{ DoGetClippingBox(x, y, w, h); }
void GetClippingBox(wxRect& rect) const
{ DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); }
// text extent
// -----------
virtual long GetCharHeight() const = 0;
virtual long GetCharWidth() const = 0;
virtual void GetTextExtent(const wxString& string,
long *x, long *y,
long *descent = NULL,
long *externalLeading = NULL,
wxFont *theFont = NULL) const = 0;
// size and resolution
// -------------------
// in device units
void GetSize(int *width, int *height) const
{ DoGetSize(width, height); }
wxSize GetSize() const
{
int w, h;
DoGetSize(&w, &h);
return wxSize(w, h);
}
// in mm
void GetSizeMM(int* width, int* height) const
{ DoGetSizeMM(width, height); }
wxSize GetSizeMM() const
{
int w, h;
DoGetSizeMM(&w, &h);
return wxSize(w, h);
}
// coordinates conversions
// -----------------------
// This group of functions does actual conversion of the input, as you'd
// expect.
long DeviceToLogicalX(long x) const;
long DeviceToLogicalY(long y) const;
long DeviceToLogicalXRel(long x) const;
long DeviceToLogicalYRel(long y) const;
long LogicalToDeviceX(long x) const;
long LogicalToDeviceY(long y) const;
long LogicalToDeviceXRel(long x) const;
long LogicalToDeviceYRel(long y) const;
// query DC capabilities
// ---------------------
virtual bool CanDrawBitmap() const = 0;
virtual bool CanGetTextExtent() const = 0;
// colour depth
virtual int GetDepth() const = 0;
// Resolution in Pixels per inch
virtual wxSize GetPPI() const = 0;
virtual bool Ok() const { return m_ok; }
// accessors
// ---------
// const...
const wxBrush& GetBackground() const { return m_backgroundBrush; }
const wxBrush& GetBrush() const { return m_brush; }
const wxFont& GetFont() const { return m_font; }
const wxPen& GetPen() const { return m_pen; }
const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
const wxColour& GetTextForeground() const { return m_textForegroundColour; }
// ... and non const
wxBrush& GetBackground() { return m_backgroundBrush; }
wxBrush& GetBrush() { return m_brush; }
wxFont& GetFont() { return m_font; }
wxPen& GetPen() { return m_pen; }
wxColour& GetTextBackground() { return m_textBackgroundColour; }
wxColour& GetTextForeground() { return m_textForegroundColour; }
virtual void SetTextForeground(const wxColour& colour)
{ m_textForegroundColour = colour; }
virtual void SetTextBackground(const wxColour& colour)
{ m_textBackgroundColour = colour; }
int GetMapMode() const { return m_mappingMode; }
virtual void SetMapMode(int mode) = 0;
virtual void GetUserScale(double *x, double *y) const
{
if ( x ) *x = m_userScaleX;
if ( y ) *y = m_userScaleY;
}
virtual void SetUserScale(double x, double y) = 0;
virtual void GetLogicalScale(double *x, double *y)
{
if ( x ) *x = m_logicalScaleX;
if ( y ) *y = m_logicalScaleY;
}
virtual void SetLogicalScale(double x, double y)
{
m_logicalScaleX = x;
m_logicalScaleY = y;
}
void GetLogicalOrigin(long *x, long *y) const
{ DoGetLogicalOrigin(x, y); }
wxPoint GetLogicalOrigin() const
{ long x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
virtual void SetLogicalOrigin(long x, long y) = 0;
void GetDeviceOrigin(long *x, long *y) const
{ DoGetDeviceOrigin(x, y); }
wxPoint GetDeviceOrigin() const
{ long x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
virtual void SetDeviceOrigin(long x, long y) = 0;
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0;
int GetLogicalFunction() const { return m_logicalFunction; }
virtual void SetLogicalFunction(int function) = 0;
// Sometimes we need to override optimization, e.g. if other software is
// drawing onto our surface and we can't be sure of who's done what.
//
// FIXME: is this (still) used?
virtual void SetOptimization(bool WXUNUSED(opt)) { }
virtual bool GetOptimization() { return FALSE; }
// bounding box
// ------------
virtual void CalcBoundingBox(long x, long 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;
}
// Get the final bounding box of the PostScript or Metafile picture.
long MinX() const { return m_minX; }
long MaxX() const { return m_maxX; }
long MinY() const { return m_minY; }
long MaxY() const { return m_maxY; }
// misc old functions
// ------------------
#if WXWIN_COMPATIBILITY
virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); }
void GetTextExtent(const wxString& string, float *x, float *y,
float *descent = NULL, float *externalLeading = NULL,
wxFont *theFont = NULL, bool use16bit = FALSE) const ;
void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; }
void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; }
#endif // WXWIN_COMPATIBILITY
protected:
// the pure virtual functions which should be implemented by wxDC
virtual void DoFloodFill(long x, long y, const wxColour& col,
int style = wxFLOOD_SURFACE) = 0;
virtual bool DoGetPixel(long x, long y, wxColour *col) const = 0;
virtual void DoDrawPoint(long x, long y) = 0;
virtual void DoDrawLine(long x1, long y1, long x2, long y2) = 0;
virtual void DoDrawArc(long x1, long y1,
long x2, long y2,
long xc, long yc) = 0;
virtual void DoDrawEllipticArc(long x, long y, long w, long h,
double sa, double ea) = 0;
virtual void DoDrawRectangle(long x, long y, long width, long height) = 0;
virtual void DoDrawRoundedRectangle(long x, long y,
long width, long height,
double radius) = 0;
virtual void DoDrawEllipse(long x, long y, long width, long height) = 0;
virtual void DoCrossHair(long x, long y) = 0;
virtual void DoDrawIcon(const wxIcon& icon, long x, long y) = 0;
virtual void DoDrawBitmap(const wxBitmap &bmp, long x, long y,
bool useMask = FALSE) = 0;
virtual void DoDrawText(const wxString& text, long x, long y) = 0;
virtual bool DoBlit(long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc,
int rop = wxCOPY, bool useMask = FALSE) = 0;
virtual void DoGetSize(int *width, int *height) const = 0;
virtual void DoGetSizeMM(int* width, int* height) const = 0;
virtual void DoDrawLines(int n, wxPoint points[],
long xoffset, long yoffset) = 0;
virtual void DoDrawPolygon(int n, wxPoint points[],
long xoffset, long yoffset,
int fillStyle = wxODDEVEN_RULE) = 0;
virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
virtual void DoSetClippingRegion(long x, long y,
long width, long height) = 0;
// FIXME are these functions really different?
virtual void DoGetClippingRegion(long *x, long *y,
long *w, long *h)
{ DoGetClippingBox(x, y, w, h); }
virtual void DoGetClippingBox(long *x, long *y,
long *w, long *h) const
{
if ( m_clipping )
{
if ( x ) *x = m_clipX1;
if ( y ) *y = m_clipY1;
if ( w ) *w = m_clipX2 - m_clipX1;
if ( h ) *h = m_clipY2 - m_clipY1;
}
else
{
*x = *y = *w = *h = 0;
}
}
virtual void DoGetLogicalOrigin(long *x, long *y) const
{
if ( x ) *x = m_logicalOriginX;
if ( y ) *y = m_logicalOriginY;
}
virtual void DoGetDeviceOrigin(long *x, long *y) const
{
if ( x ) *x = m_deviceOriginX;
if ( y ) *y = m_deviceOriginY;
}
#if wxUSE_SPLINES
virtual void DoDrawSpline(wxList *points) = 0;
#endif
protected:
// flags
bool m_colour:1;
bool m_ok:1;
bool m_clipping:1;
bool m_isInteractive:1;
// coordinate system variables
// TODO short descriptions of what exactly they are would be nice...
long m_logicalOriginX, m_logicalOriginY;
long m_deviceOriginX, m_deviceOriginY;
double m_logicalScaleX, m_logicalScaleY;
double m_userScaleX, m_userScaleY;
double m_scaleX, m_scaleY;
// Used by SetAxisOrientation() to invert the axes
int m_signX, m_signY;
// bounding and clipping boxes
long m_minX, m_minY, m_maxX, m_maxY;
long m_clipX1, m_clipY1, m_clipX2, m_clipY2;
int m_logicalFunction;
int m_backgroundMode;
int m_mappingMode;
// GDI objects
wxPen m_pen;
wxBrush m_brush;
wxBrush m_backgroundBrush;
wxColour m_textForegroundColour;
wxColour m_textBackgroundColour;
wxFont m_font;
wxPalette m_palette;
private:
DECLARE_NO_COPY_CLASS(wxDCBase);
};
// ----------------------------------------------------------------------------
// now include the declaration of wxDC class
// ----------------------------------------------------------------------------
#if defined(__WXMSW__)
#include "wx/msw/dc.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/dc.h"
#elif defined(__WXGTK__)
#include "wx/gtk/dc.h"
#elif defined(__WXQT__)
#include "wx/qt/dc.h"
#elif defined(__WXMAC__)
#include "wx/mac/dc.h"
#elif defined(__WXSTUBS__)
#include "wx/stubs/dc.h"
#endif
#endif
// _WX_DC_H_BASE_