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wxWidgets/include/wx/dcbuffer.h
Vadim Zeitlin 2e992e06a7 added wxWindow::IsDoubleBuffered() and improve wxBufferedDC (patch 1565330) 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41810 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-10-09 16:39:34 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: wx/dcbuffer.h
// Purpose: wxBufferedDC class
// Author: Ron Lee <ron@debian.org>
// Modified by: Vadim Zeitlin (refactored, added bg preservation)
// Created: 16/03/02
// RCS-ID: $Id$
// Copyright: (c) Ron Lee
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DCBUFFER_H_
#define _WX_DCBUFFER_H_
#include "wx/dcmemory.h"
#include "wx/dcclient.h"
#include "wx/window.h"
// I think this patch should be test on wxMac with
// wxTEST_PAINTDCDELEGATION as 1, and then with
// with wxTEST_MEMORYDCDELEGATION as 1.
#define wxTEST_PAINTDCDELEGATION 0
#define wxTEST_MEMORYDCDELEGATION 0
// Split platforms into two groups - those which have well-working
// double-buffering by default, and those which do not.
#if defined(__WXMAC__) || defined(__WXGTK20__)
#define wxALWAYS_NATIVE_DOUBLE_BUFFER 1
#else
#define wxALWAYS_NATIVE_DOUBLE_BUFFER 0
#endif
#if wxTEST_PAINTDCDELEGATION || wxTEST_MEMORYDCDELEGATION
#undef wxALWAYS_NATIVE_DOUBLE_BUFFER
#define wxALWAYS_NATIVE_DOUBLE_BUFFER 0
#endif
// ----------------------------------------------------------------------------
// Double buffering helper.
// ----------------------------------------------------------------------------
// Assumes the buffer bitmap covers the entire scrolled window,
// and prepares the window DC accordingly
#define wxBUFFER_VIRTUAL_AREA 0x01
// Assumes the buffer bitmap only covers the client area;
// does not prepare the window DC
#define wxBUFFER_CLIENT_AREA 0x02
class WXDLLEXPORT wxBufferedDC : public wxDC
{
public:
// Default ctor, must subsequently call Init for two stage construction.
wxBufferedDC() : wxDC(), m_targetDc(NULL), m_mainDc(NULL),
m_buffer(NULL), m_style(0)
{
}
// Construct a wxBufferedDC using a user supplied buffer.
wxBufferedDC(wxDC *dc,
const wxBitmap &buffer = wxNullBitmap,
int style = wxBUFFER_CLIENT_AREA)
: wxDC(),
m_targetDc(NULL),
m_mainDc(NULL)
{
// All other members except dcs are initialized in Init
Init(dc, buffer, style);
}
// Construct a wxBufferedDC with an internal buffer of 'area'
// (where area is usually something like the size of the window
// being buffered)
wxBufferedDC(wxDC *dc, const wxSize &area, int style = wxBUFFER_CLIENT_AREA)
: wxDC(),
m_targetDc(NULL),
m_mainDc(NULL)
{
// All other members except dcs are initialized in Init
Init(NULL, dc, area, style);
}
// Same, but also receives window to detect whether it is
// natively double-buffered.
wxBufferedDC(wxWindow* win,
wxDC *dc,
const wxSize &area,
int style = wxBUFFER_CLIENT_AREA)
: wxDC(),
m_targetDc(NULL),
m_mainDc(NULL)
{
// All other members except dcs are initialized in Init
Init(win, dc, area, style);
}
// default copy ctor ok.
// The usually desired action in the dtor is to blit the buffer.
virtual ~wxBufferedDC()
{
UnMask();
}
void Init(wxDC *dc,
const wxBitmap &buffer,
int style = wxBUFFER_CLIENT_AREA)
{
wxASSERT_MSG( m_mainDc == NULL,
wxT("wxBufferedDC already initialised") );
wxASSERT_MSG( buffer.Ok(),
wxT("invalid bitmap") );
m_mainDc = dc;
m_buffer = &buffer;
m_style = style;
UseBuffer();
}
void Init(wxWindow* win,
wxDC *dc,
const wxSize &area = wxDefaultSize,
int style = wxBUFFER_CLIENT_AREA)
{
wxASSERT_MSG( m_mainDc == NULL,
wxT("wxBufferedDC already initialised") );
m_mainDc = dc;
m_style = style;
#if wxTEST_MEMORYDCDELEGATION
if ( 0 )
#elif wxTEST_PAINTDCDELEGATION
if ( 1 )
#else
if ( win && win->IsDoubleBuffered() )
#endif
{
AttachDC(dc);
m_buffer = NULL;
}
else
{
PrepareBuffer(win, area);
UseBuffer();
}
}
void Init(wxDC *dc, const wxSize &area = wxDefaultSize, int style = wxBUFFER_CLIENT_AREA)
{
Init(NULL, dc, area, style);
}
// Blits the buffer to the dc, and detaches the dc from the buffer (so it
// can be effectively used once only).
//
// Usually called in the dtor or by the dtor of derived classes if the
// BufferedDC must blit before the derived class (which may own the dc it's
// blitting to) is destroyed.
void UnMask();
// Set and get the style
void SetStyle(int style) { m_style = style; }
int GetStyle() const { return m_style; }
private:
// Prepares wxMemoryDC.
void UseBuffer();
// Allocate m_buffer, if necessary.
void PrepareBuffer(wxWindow* win, const wxSize& area);
// DC to which calls are delegated.
wxDC* m_targetDc;
// This the underlying DC to which we copy everything drawn on
// this one in UnMask().
//
// NB: Without the existence of a wxNullDC, this must be a pointer, else it
// could probably be a reference.
wxDC* m_mainDc;
// the buffer (selected in this DC)
const wxBitmap* m_buffer;
// the buffering style
int m_style;
DECLARE_NO_COPY_CLASS(wxBufferedDC)
public:
//
// BEGIN DC-DELEGATION IMPLEMENTATION
//
wxDC& GetAttachedDC()
{
return *m_targetDc;
}
// Use this to set the DC which receives delegated calls.
void AttachDC(wxDC* dc)
{
m_targetDc = dc;
#ifdef __WXMSW__
SetHDC( dc ? dc->GetHDC() : NULL );
#endif
}
// Sets DC to NULL
wxDC* DetachDC()
{
wxDC* retDc = m_targetDc;
AttachDC(NULL);
return retDc;
}
#ifdef __WXGTK__
virtual GdkWindow* GetGDKWindow() const
{
return m_targetDc->GetGDKWindow();
}
#endif
bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
wxDC *source, wxCoord xsrc, wxCoord ysrc,
int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
{ return m_targetDc->Blit(xdest, ydest, width, height,
source, xsrc, ysrc, rop,
useMask, xsrcMask, ysrcMask); }
bool Blit(const wxPoint& destPt, const wxSize& sz,
wxDC *source, const wxPoint& srcPt,
int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition)
{ return m_targetDc->Blit(destPt, sz, source, srcPt,
rop, useMask, srcPtMask); }
virtual void CalcBoundingBox(wxCoord x, wxCoord y) { m_targetDc->CalcBoundingBox(x, y); }
#if defined(__WXWINCE__)
void CalculateEllipticPoints( wxList* points,
wxCoord xStart, wxCoord yStart,
wxCoord w, wxCoord h,
double sa, double ea )
{ m_targetDc->CalculateEllipticPoints(points, xStart, yStart, w,
h, sa, ea); }
#endif // defined(__WXWINCE__)
virtual bool CanDrawBitmap() const { return m_targetDc->CanDrawBitmap(); }
virtual bool CanGetTextExtent() const { return m_targetDc->CanGetTextExtent(); }
virtual void Clear() { m_targetDc->Clear(); }
virtual void ComputeScaleAndOrigin() { m_targetDc->ComputeScaleAndOrigin(); }
void CrossHair(wxCoord x, wxCoord y) { m_targetDc->CrossHair(x, y); }
void CrossHair(const wxPoint& pt) { m_targetDc->CrossHair(pt); }
virtual void DestroyClippingRegion() { m_targetDc->DestroyClippingRegion(); }
wxCoord DeviceToLogicalX(wxCoord x) const { return m_targetDc->DeviceToLogicalX(x); }
wxCoord DeviceToLogicalXRel(wxCoord x) const { return m_targetDc->DeviceToLogicalXRel(x); }
wxCoord DeviceToLogicalY(wxCoord y) const { return m_targetDc->DeviceToLogicalY(y); }
wxCoord DeviceToLogicalYRel(wxCoord y) const { return m_targetDc->DeviceToLogicalYRel(y); }
#if defined(__WXWINCE__)
virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y,
wxCoord w, wxCoord h,
double sa = 0, double ea = 0, double angle = 0 )
{ m_targetDc->DoDrawEllipticArcRot(x, y, w, h,
sa, ea, angle); }
#endif // defined(__WXWINCE__)
void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
wxCoord xc, wxCoord yc)
{ m_targetDc->DrawArc(x1, y1, x2, y2,
xc, yc); }
void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
{ m_targetDc->DrawArc(pt1, pt2, centre); }
void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
bool useMask = false)
{ m_targetDc->DrawBitmap(bmp, x, y, useMask); }
void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
bool useMask = false)
{ m_targetDc->DrawBitmap(bmp, pt, useMask); }
void DrawCheckMark(wxCoord x, wxCoord y,
wxCoord width, wxCoord height)
{ m_targetDc->DrawCheckMark(x, y, width, height); }
void DrawCheckMark(const wxRect& rect) { m_targetDc->DrawCheckMark(rect); }
void DrawCircle(wxCoord x, wxCoord y, wxCoord radius) { m_targetDc->DrawCircle(x, y, radius); }
void DrawCircle(const wxPoint& pt, wxCoord radius) { m_targetDc->DrawCircle(pt, radius); }
void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{ m_targetDc->DrawEllipse(x, y, width, height); }
void DrawEllipse(const wxPoint& pt, const wxSize& sz) { m_targetDc->DrawEllipse(pt, sz); }
void DrawEllipse(const wxRect& rect) { m_targetDc->DrawEllipse(rect); }
void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
double sa, double ea)
{ m_targetDc->DrawEllipticArc(x, y, w, h,
sa, ea); }
void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
double sa, double ea)
{ m_targetDc->DrawEllipticArc(pt, sz, sa, ea); }
#if defined(__WXWINCE__)
void DrawEllipticArcRot( wxCoord x, wxCoord y,
wxCoord width, wxCoord height,
double sa = 0, double ea = 0, double angle = 0 )
{ m_targetDc->DrawEllipticArcRot(x, y, width, height,
sa, ea, angle); }
void DrawEllipticArcRot( const wxPoint& pt,
const wxSize& sz,
double sa = 0, double ea = 0, double angle = 0 )
{ m_targetDc->DrawEllipticArcRot(pt, sz, sa, ea,
angle); }
void DrawEllipticArcRot( const wxRect& rect,
double sa = 0, double ea = 0, double angle = 0 )
{ m_targetDc->DrawEllipticArcRot(rect, sa, ea, angle); }
#endif // defined(__WXWINCE__)
void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) { m_targetDc->DrawIcon(icon, x, y); }
void DrawIcon(const wxIcon& icon, const wxPoint& pt) { m_targetDc->DrawIcon(icon, pt); }
virtual void DrawLabel(const wxString& text,
const wxBitmap& image,
const wxRect& rect,
int alignment = wxALIGN_LEFT | wxALIGN_TOP,
int indexAccel = -1,
wxRect *rectBounding = NULL)
{ m_targetDc->DrawLabel(text, image, rect, alignment,
indexAccel, rectBounding); }
void DrawLabel(const wxString& text, const wxRect& rect,
int alignment = wxALIGN_LEFT | wxALIGN_TOP,
int indexAccel = -1)
{ m_targetDc->DrawLabel(text, rect, alignment, indexAccel); }
void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{ m_targetDc->DrawLine(x1, y1, x2, y2); }
void DrawLine(const wxPoint& pt1, const wxPoint& pt2) { m_targetDc->DrawLine(pt1, pt2); }
void DrawLines(int n, wxPoint points[],
wxCoord xoffset = 0, wxCoord yoffset = 0)
{ m_targetDc->DrawLines(n, points, xoffset, yoffset); }
void DrawLines(const wxList *list,
wxCoord xoffset = 0, wxCoord yoffset = 0)
{ m_targetDc->DrawLines(list, xoffset, yoffset); }
virtual void DrawObject(wxDrawObject* drawobject) { m_targetDc->DrawObject(drawobject); }
void DrawPoint(wxCoord x, wxCoord y) { m_targetDc->DrawPoint(x, y); }
void DrawPoint(const wxPoint& pt) { m_targetDc->DrawPoint(pt); }
void DrawPolyPolygon(int n, int count[], wxPoint points[],
wxCoord xoffset = 0, wxCoord yoffset = 0,
int fillStyle = wxODDEVEN_RULE)
{ m_targetDc->DrawPolyPolygon(n, count, points, xoffset,
yoffset, fillStyle); }
void DrawPolygon(int n, wxPoint points[],
wxCoord xoffset = 0, wxCoord yoffset = 0,
int fillStyle = wxODDEVEN_RULE)
{ m_targetDc->DrawPolygon(n, points, xoffset, yoffset,
fillStyle); }
void DrawPolygon(const wxList *list,
wxCoord xoffset = 0, wxCoord yoffset = 0,
int fillStyle = wxODDEVEN_RULE)
{ m_targetDc->DrawPolygon(list, xoffset, yoffset, fillStyle); }
void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{ m_targetDc->DrawRectangle(x, y, width, height); }
void DrawRectangle(const wxPoint& pt, const wxSize& sz) { m_targetDc->DrawRectangle(pt, sz); }
void DrawRectangle(const wxRect& rect) { m_targetDc->DrawRectangle(rect); }
void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
{ m_targetDc->DrawRotatedText(text, x, y, angle); }
void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
{ m_targetDc->DrawRotatedText(text, pt, angle); }
void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
double radius)
{ m_targetDc->DrawRoundedRectangle(x, y, width, height,
radius); }
void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
double radius)
{ m_targetDc->DrawRoundedRectangle(pt, sz, radius); }
void DrawRoundedRectangle(const wxRect& r, double radius)
{ m_targetDc->DrawRoundedRectangle(r, radius); }
#if wxUSE_SPLINES
void DrawSpline(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord x3, wxCoord y3)
{ m_targetDc->DrawSpline(x1, y1, x2, y2,
x3, y3); }
void DrawSpline(int n, wxPoint points[]) { m_targetDc->DrawSpline(n, points); }
void DrawSpline(wxList *points) { m_targetDc->DrawSpline(points); }
#endif // wxUSE_SPLINES
void DrawText(const wxString& text, wxCoord x, wxCoord y)
{ m_targetDc->DrawText(text, x, y); }
void DrawText(const wxString& text, const wxPoint& pt) { m_targetDc->DrawText(text, pt); }
virtual void EndDoc() { m_targetDc->EndDoc(); }
virtual void EndPage() { m_targetDc->EndPage(); }
bool FloodFill(wxCoord x, wxCoord y, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ return m_targetDc->FloodFill(x, y, col, style); }
bool FloodFill(const wxPoint& pt, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ return m_targetDc->FloodFill(pt, col, style); }
virtual const wxBrush& GetBackground() const { return m_targetDc->GetBackground(); }
virtual int GetBackgroundMode() const { return m_targetDc->GetBackgroundMode(); }
virtual const wxBrush& GetBrush() const { return m_targetDc->GetBrush(); }
virtual wxCoord GetCharHeight() const { return m_targetDc->GetCharHeight(); }
virtual wxCoord GetCharWidth() const { return m_targetDc->GetCharWidth(); }
void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
{ m_targetDc->GetClippingBox(x, y, w, h); }
void GetClippingBox(wxRect& rect) const { m_targetDc->GetClippingBox(rect); }
void GetClippingBox(long *x, long *y, long *w, long *h) const
{ m_targetDc->GetClippingBox(x, y, w, h); }
virtual int GetDepth() const { return m_targetDc->GetDepth(); }
void GetDeviceOrigin(wxCoord *x, wxCoord *y) const { m_targetDc->GetDeviceOrigin(x, y); }
wxPoint GetDeviceOrigin() const { return m_targetDc->GetDeviceOrigin(); }
void GetDeviceOrigin(long *x, long *y) const { m_targetDc->GetDeviceOrigin(x, y); }
virtual const wxFont& GetFont() const { return m_targetDc->GetFont(); }
virtual int GetLogicalFunction() const { return m_targetDc->GetLogicalFunction(); }
void GetLogicalOrigin(wxCoord *x, wxCoord *y) const { m_targetDc->GetLogicalOrigin(x, y); }
wxPoint GetLogicalOrigin() const { return m_targetDc->GetLogicalOrigin(); }
void GetLogicalOrigin(long *x, long *y) const { m_targetDc->GetLogicalOrigin(x, y); }
virtual void GetLogicalScale(double *x, double *y) { m_targetDc->GetLogicalScale(x, y); }
virtual int GetMapMode() const { return m_targetDc->GetMapMode(); }
virtual void GetMultiLineTextExtent(const wxString& text,
wxCoord *width,
wxCoord *height,
wxCoord *heightLine = NULL,
wxFont *font = NULL)
{ m_targetDc->GetMultiLineTextExtent(text, width, height, heightLine,
font); }
#if WXWIN_COMPATIBILITY_2_4
virtual bool GetOptimization() { return m_targetDc->GetOptimization(); }
#endif // WXWIN_COMPATIBILITY_2_4
virtual wxSize GetPPI() const { return m_targetDc->GetPPI(); }
bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{ return m_targetDc->GetPartialTextExtents(text, widths); }
virtual const wxPen& GetPen() const { return m_targetDc->GetPen(); }
bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
{ return m_targetDc->GetPixel(x, y, col); }
bool GetPixel(const wxPoint& pt, wxColour *col) const { return m_targetDc->GetPixel(pt, col); }
void GetSize(int *width, int *height) const { m_targetDc->GetSize(width, height); }
wxSize GetSize() const { return m_targetDc->GetSize(); }
void GetSizeMM(int* width, int* height) const { m_targetDc->GetSizeMM(width, height); }
wxSize GetSizeMM() const { return m_targetDc->GetSizeMM(); }
virtual const wxColour& GetTextBackground() const { return m_targetDc->GetTextBackground(); }
void GetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
wxCoord *externalLeading = NULL,
wxFont *theFont = NULL) const
{ m_targetDc->GetTextExtent(string, x, y, descent,
externalLeading, theFont); }
void GetTextExtent(const wxString& string,
long *x, long *y,
long *descent = NULL,
long *externalLeading = NULL,
wxFont *theFont = NULL) const
{ m_targetDc->GetTextExtent(string, x, y, descent,
externalLeading, theFont); }
virtual const wxColour& GetTextForeground() const { return m_targetDc->GetTextForeground(); }
virtual void GetUserScale(double *x, double *y) const { m_targetDc->GetUserScale(x, y); }
void GradientFillConcentric(const wxRect& rect,
const wxColour& initialColour,
const wxColour& destColour)
{ m_targetDc->GradientFillConcentric(rect, initialColour, destColour); }
void GradientFillConcentric(const wxRect& rect,
const wxColour& initialColour,
const wxColour& destColour,
const wxPoint& circleCenter)
{ m_targetDc->GradientFillConcentric(rect, initialColour, destColour, circleCenter); }
void GradientFillLinear(const wxRect& rect,
const wxColour& initialColour,
const wxColour& destColour,
wxDirection nDirection = wxEAST)
{ m_targetDc->GradientFillLinear(rect, initialColour, destColour, nDirection); }
wxCoord LogicalToDeviceX(wxCoord x) const { return m_targetDc->LogicalToDeviceX(x); }
wxCoord LogicalToDeviceXRel(wxCoord x) const { return m_targetDc->LogicalToDeviceXRel(x); }
wxCoord LogicalToDeviceY(wxCoord y) const { return m_targetDc->LogicalToDeviceY(y); }
wxCoord LogicalToDeviceYRel(wxCoord y) const { return m_targetDc->LogicalToDeviceYRel(y); }
wxCoord MaxX() const { return m_targetDc->MaxX(); }
wxCoord MaxY() const { return m_targetDc->MaxY(); }
wxCoord MinX() const { return m_targetDc->MinX(); }
wxCoord MinY() const { return m_targetDc->MinY(); }
virtual bool Ok() const { return m_targetDc->Ok(); }
void ResetBoundingBox()
{ m_targetDc->ResetBoundingBox(); }
#if defined(__WXWINCE__)
void Rotate( wxList* points, double angle, wxPoint center = wxPoint(0,0) )
{ m_targetDc->Rotate(points, angle, center, 0)); }
#endif // defined(__WXWINCE__)
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
{ m_targetDc->SetAxisOrientation(xLeftRight, yBottomUp); }
virtual void SetBackground(const wxBrush& brush) { m_targetDc->SetBackground(brush); }
virtual void SetBackgroundMode(int mode) { m_targetDc->SetBackgroundMode(mode); }
virtual void SetBrush(const wxBrush& brush) { m_targetDc->SetBrush(brush); }
void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{ m_targetDc->SetClippingRegion(x, y, width, height); }
void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
{ m_targetDc->SetClippingRegion(pt, sz); }
void SetClippingRegion(const wxRect& rect) { m_targetDc->SetClippingRegion(rect); }
void SetClippingRegion(const wxRegion& region) { m_targetDc->SetClippingRegion(region); }
virtual void SetDeviceOrigin(wxCoord x, wxCoord y) { m_targetDc->SetDeviceOrigin(x, y); }
virtual void SetFont(const wxFont& font) { m_targetDc->SetFont(font); }
virtual void SetLogicalFunction(int function) { m_targetDc->SetLogicalFunction(function); }
virtual void SetLogicalOrigin(wxCoord x, wxCoord y) { m_targetDc->SetLogicalOrigin(x, y); }
virtual void SetLogicalScale(double x, double y) { m_targetDc->SetLogicalScale(x, y); }
virtual void SetMapMode(int mode) { m_targetDc->SetMapMode(mode); }
#if WXWIN_COMPATIBILITY_2_4
virtual void SetOptimization(bool opt) { m_targetDc->SetOptimization(opt); }
#endif // WXWIN_COMPATIBILITY_2_4
#if wxUSE_PALETTE
virtual void SetPalette(const wxPalette& palette) { m_targetDc->SetPalette(palette); }
#endif // wxUSE_PALETTE
virtual void SetPen(const wxPen& pen) { m_targetDc->SetPen(pen); }
virtual void SetTextBackground(const wxColour& colour) { m_targetDc->SetTextBackground(colour); }
virtual void SetTextForeground(const wxColour& colour) { m_targetDc->SetTextForeground(colour); }
virtual void SetUserScale(double x, double y) { m_targetDc->SetUserScale(x, y); }
virtual bool StartDoc(const wxString& message) { return m_targetDc->StartDoc(message); }
virtual void StartPage() { m_targetDc->StartPage(); }
protected:
virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
wxCoord width, wxCoord height,
wxDC *source, wxCoord xsrc, wxCoord ysrc,
int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
{ return m_targetDc->Blit(xdest, ydest, width, height,
source, xsrc, ysrc, rop,
useMask, xsrcMask, ysrcMask); }
virtual void DoCrossHair(wxCoord x, wxCoord y) { m_targetDc->CrossHair(x, y); }
virtual void DoDrawArc(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord xc, wxCoord yc)
{ m_targetDc->DrawArc(x1, y1, x2, y2,
xc, yc); }
virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
bool useMask = false)
{ m_targetDc->DrawBitmap(bmp, x, y, useMask); }
virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
wxCoord width, wxCoord height)
{ m_targetDc->DrawCheckMark(x, y, width, height); }
virtual void DoDrawEllipse(wxCoord x, wxCoord y,
wxCoord width, wxCoord height)
{ m_targetDc->DrawEllipse(x, y, width, height); }
virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
double sa, double ea)
{ m_targetDc->DrawEllipticArc(x, y, w, h,
sa, ea); }
virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
{ m_targetDc->DrawIcon(icon, x, y); }
virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{ m_targetDc->DrawLine(x1, y1, x2, y2); }
virtual void DoDrawLines(int n, wxPoint points[],
wxCoord xoffset, wxCoord yoffset)
{ m_targetDc->DrawLines(n, points, xoffset, yoffset); }
virtual void DoDrawPoint(wxCoord x, wxCoord y) { m_targetDc->DrawPoint(x, y); }
virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
wxCoord xoffset, wxCoord yoffset,
int fillStyle)
{ m_targetDc->DrawPolyPolygon(n, count, points, xoffset,
yoffset, fillStyle); }
virtual void DoDrawPolygon(int n, wxPoint points[],
wxCoord xoffset, wxCoord yoffset,
int fillStyle = wxODDEVEN_RULE)
{ m_targetDc->DrawPolygon(n, points, xoffset, yoffset,
fillStyle); }
virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{ m_targetDc->DrawRectangle(x, y, width, height); }
virtual void DoDrawRotatedText(const wxString& text,
wxCoord x, wxCoord y, double angle)
{ m_targetDc->DrawRotatedText(text, x, y, angle); }
virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
wxCoord width, wxCoord height,
double radius)
{ m_targetDc->DrawRoundedRectangle(x, y, width, height,
radius); }
#if wxUSE_SPLINES
virtual void DoDrawSpline(wxList *points) { m_targetDc->DrawSpline(points); }
#endif // wxUSE_SPLINES
virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y)
{ m_targetDc->DrawText(text, x, y); }
virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
int style = wxFLOOD_SURFACE)
{ return m_targetDc->FloodFill(x, y, col, style); }
virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
wxCoord *w, wxCoord *h) const
{ m_targetDc->GetClippingBox(x, y, w, h); }
virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
{ m_targetDc->GetDeviceOrigin(x, y); }
virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const
{ m_targetDc->GetLogicalOrigin(x, y); }
virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{ return m_targetDc->GetPartialTextExtents(text, widths); }
virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
{ return m_targetDc->GetPixel(x, y, col); }
virtual void DoGetSize(int *width, int *height) const { m_targetDc->GetSize(width, height); }
virtual void DoGetSizeMM(int* width, int* height) const { m_targetDc->GetSizeMM(width, height); }
virtual void DoGetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
wxCoord *externalLeading = NULL,
wxFont *theFont = NULL) const
{ m_targetDc->GetTextExtent(string, x, y, descent,
externalLeading, theFont); }
virtual void DoGradientFillLinear(const wxRect& rect,
const wxColour& initialColour,
const wxColour& destColour,
wxDirection nDirection = wxEAST)
{ m_targetDc->GradientFillLinear(rect, initialColour, destColour, nDirection); }
virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
wxCoord width, wxCoord height)
{ m_targetDc->SetClippingRegion(x, y, width, height); }
virtual void DoSetClippingRegionAsRegion(const wxRegion& region)
{ m_targetDc->SetClippingRegion(region); }
};
// ----------------------------------------------------------------------------
// Double buffered PaintDC.
// ----------------------------------------------------------------------------
// Creates a double buffered wxPaintDC, optionally allowing the
// user to specify their own buffer to use.
class wxBufferedPaintDC : public wxBufferedDC
{
public:
// If no bitmap is supplied by the user, a temporary one will be created.
wxBufferedPaintDC(wxWindow *window, const wxBitmap& buffer, int style = wxBUFFER_CLIENT_AREA)
: m_paintdc(window)
{
// If we're buffering the virtual window, scale the paint DC as well
if (style & wxBUFFER_VIRTUAL_AREA)
window->PrepareDC( m_paintdc );
if( buffer != wxNullBitmap )
Init(&m_paintdc, buffer, style);
else
Init(window, &m_paintdc, window->GetClientSize(), style);
}
// If no bitmap is supplied by the user, a temporary one will be created.
wxBufferedPaintDC(wxWindow *window, int style = wxBUFFER_CLIENT_AREA)
: m_paintdc(window)
{
// If we're using the virtual window, scale the paint DC as well
if (style & wxBUFFER_VIRTUAL_AREA)
window->PrepareDC( m_paintdc );
Init(window, &m_paintdc, window->GetClientSize(), style);
}
// default copy ctor ok.
virtual ~wxBufferedPaintDC()
{
// We must UnMask here, else by the time the base class
// does it, the PaintDC will have already been destroyed.
UnMask();
}
private:
wxPaintDC m_paintdc;
DECLARE_NO_COPY_CLASS(wxBufferedPaintDC)
};
//
// wxAutoBufferedPaintDC is a wxPaintDC in toolkits which have double-
// buffering by default. Otherwise it is a wxBufferedPaintDC. Thus,
// you can only expect it work with a simple constructor that
// accepts single wxWindow* argument.
//
#if wxALWAYS_NATIVE_DOUBLE_BUFFER
#define wxAutoBufferedPaintDCBase wxPaintDC
#else
#define wxAutoBufferedPaintDCBase wxBufferedPaintDC
#endif
#ifdef __WXDEBUG__
class wxAutoBufferedPaintDC : public wxAutoBufferedPaintDCBase
{
public:
wxAutoBufferedPaintDC(wxWindow* win)
: wxAutoBufferedPaintDCBase(win)
{
TestWinStyle(win);
}
virtual ~wxAutoBufferedPaintDC() { }
private:
void TestWinStyle(wxWindow* win)
{
// Help the user to get the double-buffering working properly.
wxASSERT_MSG( win->GetBackgroundStyle() == wxBG_STYLE_CUSTOM,
wxT("In constructor, you need to call GetBackgroundStyle(wxBG_STYLE_CUSTOM), ")
wxT("and also, if needed, paint the background manually in the paint event handler."));
}
DECLARE_NO_COPY_CLASS(wxAutoBufferedPaintDC)
};
#else // !__WXDEBUG__
// In release builds, just use typedef
typedef wxAutoBufferedPaintDCBase wxAutoBufferedPaintDC;
#endif
#endif // _WX_DCBUFFER_H_
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