wxWidgets/include/wx/msw/dc.h
Julian Smart 0cbff1201a Added wxUSE_DC_CACHEING and associated code to wxMSW
Added EnableCache, CacheEnabled to wxDCBase
Added mask source args to DoBlit, Blit
Added cache testing code to dragimag sample
Added wxSystemOptions, regenerated makefiles


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10962 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2001-07-11 10:07:06 +00:00

282 lines
8.7 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose: wxDC class
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DC_H_
#define _WX_DC_H_
#ifdef __GNUG__
#pragma interface "dc.h"
#endif
#include "wx/defs.h"
#include "wx/dc.h"
// ---------------------------------------------------------------------------
// macros
// ---------------------------------------------------------------------------
// Logical to device
// Absolute
#define XLOG2DEV(x) (x)
#define YLOG2DEV(y) (y)
// Relative
#define XLOG2DEVREL(x) (x)
#define YLOG2DEVREL(y) (y)
// Device to logical
// Absolute
#define XDEV2LOG(x) (x)
#define YDEV2LOG(y) (y)
// Relative
#define XDEV2LOGREL(x) (x)
#define YDEV2LOGREL(y) (y)
/*
* Have the same macros as for XView but not for every operation:
* just for calculating window/viewport extent (a better way of scaling).
*/
// Logical to device
// Absolute
#define MS_XLOG2DEV(x) LogicalToDevice(x)
#define MS_YLOG2DEV(y) LogicalToDevice(y)
// Relative
#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
// Device to logical
// Absolute
#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
// Relative
#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
#define YSCALE(y) (yorigin - (y))
#define wx_round(a) (int)((a)+.5)
#if wxUSE_DC_CACHEING
/*
* Cached blitting, maintaining a cache
* of bitmaps required for transparent blitting
* instead of constant creation/deletion
*/
class wxDCCacheEntry: public wxObject
{
public:
wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth);
wxDCCacheEntry(WXHDC hDC, int depth);
~wxDCCacheEntry();
WXHBITMAP m_bitmap;
WXHDC m_dc;
int m_width;
int m_height;
int m_depth;
};
#endif
class WXDLLEXPORT wxDC : public wxDCBase
{
public:
wxDC();
~wxDC();
// implement base class pure virtuals
// ----------------------------------
virtual void Clear();
virtual bool StartDoc(const wxString& message);
virtual void EndDoc();
virtual void StartPage();
virtual void EndPage();
virtual void SetFont(const wxFont& font);
virtual void SetPen(const wxPen& pen);
virtual void SetBrush(const wxBrush& brush);
virtual void SetBackground(const wxBrush& brush);
virtual void SetBackgroundMode(int mode);
virtual void SetPalette(const wxPalette& palette);
virtual void DestroyClippingRegion();
virtual wxCoord GetCharHeight() const;
virtual wxCoord GetCharWidth() const;
virtual void DoGetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
wxCoord *externalLeading = NULL,
wxFont *theFont = NULL) const;
virtual bool CanDrawBitmap() const;
virtual bool CanGetTextExtent() const;
virtual int GetDepth() const;
virtual wxSize GetPPI() const;
virtual void SetMapMode(int mode);
virtual void SetUserScale(double x, double y);
virtual void SetSystemScale(double x, double y);
virtual void SetLogicalScale(double x, double y);
virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
virtual void SetLogicalFunction(int function);
// implementation from now on
// --------------------------
virtual void SetRop(WXHDC cdc);
virtual void SelectOldObjects(WXHDC dc);
wxWindow *GetWindow() const { return m_canvas; }
void SetWindow(wxWindow *win) { m_canvas = win; }
WXHDC GetHDC() const { return m_hDC; }
void SetHDC(WXHDC dc, bool bOwnsDC = FALSE)
{
m_hDC = dc;
m_bOwnsDC = bOwnsDC;
}
const wxBitmap& GetSelectedBitmap() const { return m_selectedBitmap; }
wxBitmap& GetSelectedBitmap() { return m_selectedBitmap; }
// update the internal clip box variables
void UpdateClipBox();
#if wxUSE_DC_CACHEING
static wxDCCacheEntry* FindBitmapInCache(WXHDC hDC, int w, int h);
static wxDCCacheEntry* FindDCInCache(wxDCCacheEntry* notThis, WXHDC hDC);
static void AddToBitmapCache(wxDCCacheEntry* entry);
static void AddToDCCache(wxDCCacheEntry* entry);
static void ClearCache();
#endif
protected:
virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
int style = wxFLOOD_SURFACE);
virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
virtual void DoDrawPoint(wxCoord x, wxCoord y);
virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
virtual void DoDrawArc(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord xc, wxCoord yc);
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);
virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
wxCoord width, wxCoord height,
double radius);
virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
virtual void DoCrossHair(wxCoord x, wxCoord y);
virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
bool useMask = FALSE);
virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
double angle);
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 = -1, wxCoord ysrcMask = -1);
// this is gnarly - we can't even call this function DoSetClippingRegion()
// because of virtual function hiding
virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
wxCoord width, wxCoord height);
virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
wxCoord *width, wxCoord *height)
{
GetClippingBox(x, y, width, height);
}
virtual void DoGetSize(int *width, int *height) const;
virtual void DoGetSizeMM(int* width, int* height) const;
virtual void DoDrawLines(int n, wxPoint points[],
wxCoord xoffset, wxCoord yoffset);
virtual void DoDrawPolygon(int n, wxPoint points[],
wxCoord xoffset, wxCoord yoffset,
int fillStyle = wxODDEVEN_RULE);
// common part of DoDrawText() and DoDrawRotatedText()
void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
// MSW-specific member variables
int m_windowExtX;
int m_windowExtY;
// the window associated with this DC (may be NULL)
wxWindow *m_canvas;
wxBitmap m_selectedBitmap;
// TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
bool m_bOwnsDC:1;
// our HDC
WXHDC m_hDC;
// Store all old GDI objects when do a SelectObject, so we can select them
// back in (this unselecting user's objects) so we can safely delete the
// DC.
WXHBITMAP m_oldBitmap;
WXHPEN m_oldPen;
WXHBRUSH m_oldBrush;
WXHFONT m_oldFont;
WXHPALETTE m_oldPalette;
#if wxUSE_DC_CACHEING
static wxList sm_bitmapCache;
static wxList sm_dcCache;
#endif
DECLARE_DYNAMIC_CLASS(wxDC)
};
// ----------------------------------------------------------------------------
// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWindows
// only/mainly)
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxDCTemp : public wxDC
{
public:
wxDCTemp(WXHDC hdc) { SetHDC(hdc); }
virtual ~wxDCTemp() { SetHDC((WXHDC)NULL); }
};
#endif
// _WX_DC_H_