X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/72cdf4c9b3ce92addf09cfb322f0c19bfb0f8744..9e15c94f41c8cdf42470d318269e48e90d6ba75e:/include/wx/msw/dc.h diff --git a/include/wx/msw/dc.h b/include/wx/msw/dc.h index 07bbb0013c..895aa8c50c 100644 --- a/include/wx/msw/dc.h +++ b/include/wx/msw/dc.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: dc.h +// Name: wx/msw/dc.h // Purpose: wxDC class // Author: Julian Smart // Modified by: @@ -9,75 +9,44 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef _WX_DC_H_ -#define _WX_DC_H_ - -#ifdef __GNUG__ - #pragma interface "dc.h" -#endif +#ifndef _WX_MSW_DC_H_ +#define _WX_MSW_DC_H_ #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) - +#if wxUSE_DC_CACHEING /* - * Have the same macros as for XView but not for every operation: - * just for calculating window/viewport extent (a better way of scaling). + * Cached blitting, maintaining a cache + * of bitmaps required for transparent blitting + * instead of constant creation/deletion */ -// 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) +class wxDCCacheEntry: public wxObject +{ +public: + wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth); + wxDCCacheEntry(WXHDC hDC, int depth); + virtual ~wxDCCacheEntry(); + + WXHBITMAP m_bitmap; + WXHDC m_dc; + int m_width; + int m_height; + int m_depth; +}; +#endif +// this is an ABC: use one of the derived classes to create a DC associated +// with a window, screen, printer and so on class WXDLLEXPORT wxDC : public wxDCBase { - DECLARE_DYNAMIC_CLASS(wxDC) - public: - wxDC(); - ~wxDC(); + wxDC(WXHDC hDC) { Init(); m_hDC = hDC; } + virtual ~wxDC(); // implement base class pure virtuals // ---------------------------------- @@ -95,17 +64,14 @@ public: virtual void SetBrush(const wxBrush& brush); virtual void SetBackground(const wxBrush& brush); virtual void SetBackgroundMode(int mode); +#if wxUSE_PALETTE virtual void SetPalette(const wxPalette& palette); +#endif // wxUSE_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; @@ -125,23 +91,92 @@ public: // -------------------------- virtual void SetRop(WXHDC cdc); - virtual void DoClipping(WXHDC cdc); virtual void SelectOldObjects(WXHDC dc); wxWindow *GetWindow() const { return m_canvas; } - void SetWindow(wxWindow *win) { m_canvas = win; } + void SetWindow(wxWindow *win) + { + m_canvas = win; + +#if wxUSE_PALETTE + // if we have palettes use the correct one for this window + InitializePalette(); +#endif // wxUSE_PALETTE + } WXHDC GetHDC() const { return m_hDC; } - void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) + void SetHDC(WXHDC dc, bool bOwnsDC = false) { m_hDC = dc; m_bOwnsDC = bOwnsDC; + + // we might have a pre existing clipping region, make sure that we + // return it if asked -- but avoid calling ::GetClipBox() right now as + // it could be unnecessary wasteful + m_clipping = true; + m_clipX1 = + m_clipX2 = 0; } + 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 + + // RTL related functions + // --------------------- + + // get or change the layout direction (LTR or RTL) for this dc, + // wxLayout_Default is returned if layout direction is not supported + virtual wxLayoutDirection GetLayoutDirection() const; + virtual void SetLayoutDirection(wxLayoutDirection dir); + protected: - virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, + void Init() + { + m_canvas = NULL; + m_bOwnsDC = false; + m_hDC = NULL; + + m_oldBitmap = NULL; + m_oldPen = NULL; + m_oldBrush = NULL; + m_oldFont = NULL; + +#if wxUSE_PALETTE + m_oldPalette = NULL; +#endif // wxUSE_PALETTE + } + + // create an uninitialized DC: this should be only used by the derived + // classes + wxDC() { Init(); } + + virtual void DoGetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + wxFont *theFont = NULL) const; + virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; + + virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE); + virtual void DoGradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection = wxEAST); + virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const; virtual void DoDrawPoint(wxCoord x, wxCoord y); @@ -150,6 +185,8 @@ protected: 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); @@ -159,30 +196,32 @@ protected: double radius); virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); +#if wxUSE_SPLINES + virtual void DoDrawSpline(wxList *points); +#endif + 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); + 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); + int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord); // 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 DoGetClippingBox(wxCoord *x, wxCoord *y, + wxCoord *w, wxCoord *h) const; - virtual void DoGetSize(int *width, int *height) const; virtual void DoGetSizeMM(int* width, int* height) const; virtual void DoDrawLines(int n, wxPoint points[], @@ -190,14 +229,41 @@ protected: virtual void DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int fillStyle = wxODDEVEN_RULE); + virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + int fillStyle = wxODDEVEN_RULE); + + +#if wxUSE_PALETTE + // MSW specific, select a logical palette into the HDC + // (tell windows to translate pixel from other palettes to our custom one + // and vice versa) + // Realize tells it to also reset the system palette to this one. + void DoSelectPalette(bool realize = false); + + // Find out what palette our parent window has, then select it into the dc + void InitializePalette(); +#endif // wxUSE_PALETTE + + // common part of DoDrawText() and DoDrawRotatedText() + void DrawAnyText(const wxString& text, wxCoord x, wxCoord y); + + // common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion() + void SetClippingHrgn(WXHRGN hrgn); + + // implementation of DoGetSize() for wxScreen/PrinterDC: this simply + // returns the size of the entire device this DC is associated with + // + // notice that we intentionally put it in a separate function instead of + // DoGetSize() itself because we want it to remain pure virtual both + // because each derived class should take care to define it as needed (this + // implementation is not at all always appropriate) and because we want + // wxDC to be an ABC to prevent it from being created directly + void GetDeviceSize(int *width, int *height) const; -#if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points); -#endif // wxUSE_SPLINES // MSW-specific member variables - int m_windowExtX; - int m_windowExtY; + // ----------------------------- // the window associated with this DC (may be NULL) wxWindow *m_canvas; @@ -207,10 +273,8 @@ protected: // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it bool m_bOwnsDC:1; - // our HDC and its usage count: we only free it when the usage count drops - // to 0 + // our HDC WXHDC m_hDC; - int m_hDCCount; // 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 @@ -219,8 +283,61 @@ protected: WXHPEN m_oldPen; WXHBRUSH m_oldBrush; WXHFONT m_oldFont; + +#if wxUSE_PALETTE WXHPALETTE m_oldPalette; -}; +#endif // wxUSE_PALETTE +#if wxUSE_DC_CACHEING + static wxList sm_bitmapCache; + static wxList sm_dcCache; #endif - // _WX_DC_H_ + + DECLARE_DYNAMIC_CLASS(wxDC) + DECLARE_NO_COPY_CLASS(wxDC) +}; + +// ---------------------------------------------------------------------------- +// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWidgets +// only/mainly) +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCTemp : public wxDC +{ +public: + // construct a temporary DC with the specified HDC and size (it should be + // specified whenever we know it for this HDC) + wxDCTemp(WXHDC hdc, const wxSize& size = wxDefaultSize) + : wxDC(hdc), + m_size(size) + { + } + + virtual ~wxDCTemp() + { + // prevent base class dtor from freeing it + SetHDC((WXHDC)NULL); + } + +protected: + virtual void DoGetSize(int *w, int *h) const + { + wxASSERT_MSG( m_size.IsFullySpecified(), + _T("size of this DC hadn't been set and is unknown") ); + + if ( w ) + *w = m_size.x; + if ( h ) + *h = m_size.y; + } + +private: + // size of this DC must be explicitly set by SetSize() as we have no way to + // find it ourselves + const wxSize m_size; + + DECLARE_NO_COPY_CLASS(wxDCTemp) +}; + +#endif // _WX_MSW_DC_H_ +