/////////////////////////////////////////////////////////////////////////////
// Name: dcclient.cpp
// Purpose: wxClientDC class
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: 01/02/97
+// Created: 09/21/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "dcclient.h"
-#endif
+// ===========================================================================
+// declarations
+// ===========================================================================
-#include "wx/dcclient.h"
-#include "wx/dcmemory.h"
-#include "wx/region.h"
-#include <math.h>
-
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
-
-#define RAD2DEG 57.2957795131
-
-//-----------------------------------------------------------------------------
-// wxPaintDC
-//-----------------------------------------------------------------------------
-
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
-IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
-IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
-#endif
-
-/*
- * wxWindowDC
- */
-
-wxWindowDC::wxWindowDC(void)
-{
-};
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
-wxWindowDC::wxWindowDC( wxWindow *window )
-{
-};
-
-wxWindowDC::~wxWindowDC(void)
-{
-};
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
-void wxWindowDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1),
- const wxColour& WXUNUSED(col), int WXUNUSED(style) )
-{
-};
+#include "wx/string.h"
+#include "wx/log.h"
+#include "wx/window.h"
-bool wxWindowDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
-{
- return FALSE;
-};
+#include "wx/os2/private.h"
-void wxWindowDC::DrawLine( long x1, long y1, long x2, long y2 )
-{
- if (!Ok()) return;
-
-};
-
-void wxWindowDC::CrossHair( long x, long y )
-{
- if (!Ok()) return;
-
-};
-
-void wxWindowDC::DrawArc( long x1, long y1, long x2, long y2, long xc, long yc )
-{
- if (!Ok()) return;
-
- long xx1 = XLOG2DEV(x1);
- long yy1 = YLOG2DEV(y1);
- long xx2 = XLOG2DEV(x2);
- long yy2 = YLOG2DEV(y2);
- long xxc = XLOG2DEV((long)xc);
- long yyc = YLOG2DEV((long)yc);
- double dx = xx1 - xxc;
- double dy = yy1 - yyc;
- double radius = sqrt(dx*dx+dy*dy);
- long r = (long)radius;
- double radius1, radius2;
-
- if (xx1 == xx2 && yy1 == yy2)
- {
- radius1 = 0.0;
- radius2 = 360.0;
- }
- else
- if (radius == 0.0)
- {
- radius1 = radius2 = 0.0;
- }
- else
- {
- radius1 = (xx1 - xxc == 0) ?
- (yy1 - yyc < 0) ? 90.0 : -90.0 :
- -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
- radius2 = (xx2 - xxc == 0) ?
- (yy2 - yyc < 0) ? 90.0 : -90.0 :
- -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
- };
- long alpha1 = long(radius1 * 64.0);
- long alpha2 = long((radius2 - radius1) * 64.0);
- while (alpha2 <= 0) alpha2 += 360*64;
- while (alpha1 > 360*64) alpha1 -= 360*64;
-
- if (m_brush.GetStyle() != wxTRANSPARENT) {};
-
- if (m_pen.GetStyle() != wxTRANSPARENT) {};
-
-};
+#include "wx/dcclient.h"
-void wxWindowDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
-{
- if (!Ok()) return;
-
- long xx = XLOG2DEV(x);
- long yy = YLOG2DEV(y);
- long ww = m_signX * XLOG2DEVREL(width);
- long hh = m_signY * YLOG2DEVREL(height);
-
- // CMB: handle -ve width and/or height
- if (ww < 0) { ww = -ww; xx = xx - ww; }
- if (hh < 0) { hh = -hh; yy = yy - hh; }
-
- long start = long(sa * 64.0);
- long end = long(ea * 64.0);
- if (m_brush.GetStyle() != wxTRANSPARENT) {};
-
- if (m_pen.GetStyle() != wxTRANSPARENT) {};
-};
+// ----------------------------------------------------------------------------
+// array/list types
+// ----------------------------------------------------------------------------
-void wxWindowDC::DrawPoint( long x, long y )
+struct WXDLLEXPORT wxPaintDCInfo
{
- if (!Ok()) return;
-
- if (m_pen.GetStyle() != wxTRANSPARENT) {};
-};
-
-void wxWindowDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
-{
- if (!Ok()) return;
-
- if (m_pen.GetStyle() == wxTRANSPARENT) return;
-
- for (int i = 0; i < n-1; i++)
- {
- long x1 = XLOG2DEV(points[i].x + xoffset);
- long x2 = XLOG2DEV(points[i+1].x + xoffset);
- long y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste
- long y2 = YLOG2DEV(points[i+1].y + yoffset);
- };
-};
+ wxPaintDCInfo(wxWindow *win, wxDC *dc)
+ {
+ hwnd = win->GetHWND();
+ hdc = dc->GetHDC();
+ count = 1;
+ }
-void wxWindowDC::DrawLines( wxList *points, long xoffset, long yoffset )
-{
- if (!Ok()) return;
-
- if (m_pen.GetStyle() == wxTRANSPARENT) return;
-
- wxNode *node = points->First();
- while (node->Next())
- {
- wxPoint *point = (wxPoint*)node->Data();
- wxPoint *npoint = (wxPoint*)node->Next()->Data();
- long x1 = XLOG2DEV(point->x + xoffset);
- long x2 = XLOG2DEV(npoint->x + xoffset);
- long y1 = YLOG2DEV(point->y + yoffset); // and again...
- long y2 = YLOG2DEV(npoint->y + yoffset);
- node = node->Next();
- };
+ WXHWND hwnd; // window for this DC
+ WXHDC hdc; // the DC handle
+ size_t count; // usage count
};
-void wxWindowDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[],
- long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
-{
- if (!Ok()) return;
-};
+#include "wx/arrimpl.cpp"
-void wxWindowDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset),
- long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
-{
- if (!Ok()) return;
-};
+WX_DEFINE_OBJARRAY(wxArrayDCInfo);
-void wxWindowDC::DrawRectangle( long x, long y, long width, long height )
-{
- if (!Ok()) return;
-
- long xx = XLOG2DEV(x);
- long yy = YLOG2DEV(y);
- long ww = m_signX * XLOG2DEVREL(width);
- long hh = m_signY * YLOG2DEVREL(height);
-
- // CMB: draw nothing if transformed w or h is 0
- if (ww == 0 || hh == 0) return;
-
- // CMB: handle -ve width and/or height
- if (ww < 0) { ww = -ww; xx = xx - ww; }
- if (hh < 0) { hh = -hh; yy = yy - hh; }
-
- if (m_brush.GetStyle() != wxTRANSPARENT) {};
-
- if (m_pen.GetStyle() != wxTRANSPARENT) {};
-};
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
-void wxWindowDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius )
-{
- if (!Ok()) return;
-
- if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
-
- long xx = XLOG2DEV(x);
- long yy = YLOG2DEV(y);
- long ww = m_signX * XLOG2DEVREL(width);
- long hh = m_signY * YLOG2DEVREL(height);
- long rr = XLOG2DEVREL((long)radius);
-
- // CMB: handle -ve width and/or height
- if (ww < 0) { ww = -ww; xx = xx - ww; }
- if (hh < 0) { hh = -hh; yy = yy - hh; }
-
- // CMB: if radius is zero use DrawRectangle() instead to avoid
- // X drawing errors with small radii
- if (rr == 0)
- {
- DrawRectangle( x, y, width, height );
- return;
- }
+ IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
+ IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
+ IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
- // CMB: draw nothing if transformed w or h is 0
- if (ww == 0 || hh == 0) return;
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
- // CMB: adjust size if outline is drawn otherwise the result is
- // 1 pixel too wide and high
- if (m_pen.GetStyle() != wxTRANSPARENT)
- {
- ww--;
- hh--;
- }
+static RECT g_paintStruct;
- // CMB: ensure dd is not larger than rectangle otherwise we
- // get an hour glass shape
- long dd = 2 * rr;
- if (dd > ww) dd = ww;
- if (dd > hh) dd = hh;
- rr = dd / 2;
+#ifdef __WXDEBUG__
+ // a global variable which we check to verify that wxPaintDC are only
+ // created in resopnse to WM_PAINT message - doing this from elsewhere is a
+ // common programming error among wxWindows programmers and might lead to
+ // very subtle and difficult to debug refresh/repaint bugs.
+ int g_isPainting = 0;
+#endif // __WXDEBUG__
- if (m_brush.GetStyle() != wxTRANSPARENT)
- {
- };
-
- if (m_pen.GetStyle() != wxTRANSPARENT)
- {
- };
-};
+// ===========================================================================
+// implementation
+// ===========================================================================
-void wxWindowDC::DrawEllipse( long x, long y, long width, long height )
-{
- if (!Ok()) return;
-
- long xx = XLOG2DEV(x);
- long yy = YLOG2DEV(y);
- long ww = m_signX * XLOG2DEVREL(width);
- long hh = m_signY * YLOG2DEVREL(height);
-
- // CMB: handle -ve width and/or height
- if (ww < 0) { ww = -ww; xx = xx - ww; }
- if (hh < 0) { hh = -hh; yy = yy - hh; }
-
- if (m_brush.GetStyle() != wxTRANSPARENT) {};
-
- if (m_pen.GetStyle() != wxTRANSPARENT) {};
-};
+// ----------------------------------------------------------------------------
+// wxWindowDC
+// ----------------------------------------------------------------------------
-bool wxWindowDC::CanDrawBitmap(void) const
+wxWindowDC::wxWindowDC()
{
- return TRUE;
-};
+ m_canvas = NULL;
+}
-void wxWindowDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
-{
- if (!Ok()) return;
-
- if (!icon.Ok()) return;
-
- int xx = XLOG2DEV(x);
- int yy = YLOG2DEV(y);
-
-};
+wxWindowDC::wxWindowDC(wxWindow *the_canvas)
+{
+ m_canvas = the_canvas;
+ m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(the_canvas) );
+ m_hDCCount++;
+ //
+ // default under PM is that Window and Client DC's are the same
+ // so we offer a separate Presentation Space to use for the
+ // entire window. Otherwise, calling BeginPaint will just create
+ // chached-micro client presentation space
+ //
+ m_hPS = GpiCreatePS( m_hab
+ ,m_hDC
+ ,&m_PageSize
+ ,PU_PELS | GPIF_LONG | GPIA_ASSOC
+ );
+ ::GpiAssociate(m_hPS, NULLHANDLE);
+ ::GpiAssociate(m_hPS, m_hDC);
+ SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
+}
-bool wxWindowDC::Blit( long xdest, long ydest, long width, long height,
- wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) )
+wxWindowDC::~wxWindowDC()
{
- if (!Ok()) return FALSE;
-
- // CMB 20/5/98: add blitting of bitmaps
- if (source->IsKindOf(CLASSINFO(wxMemoryDC)))
+ if (m_canvas && m_hDC)
{
- wxMemoryDC* srcDC = (wxMemoryDC*)source;
- /*
- GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
- if (bmap)
- {
- gdk_draw_bitmap (
- m_window,
- m_textGC,
- bmap,
- source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc),
- XLOG2DEV(xdest), YLOG2DEV(ydest),
- source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height)
- );
- return TRUE;
- }
- */
+ SelectOldObjects(m_hDC);
+
+ //
+ // In PM one does not explicitly close or release an open WindowDC
+ // They automatically close with the window, unless explicitly detached
+ // but we need to destroy our PS
+ //
+ ::GpiAssociate(m_hPS, NULLHANDLE);
+ ::GpiDestroyPS(m_hPS);
+ m_hPS = NULLHANDLE;
+ m_hDC = NULLHANDLE;
}
- return TRUE;
-};
-
-void wxWindowDC::DrawText( const wxString &text, long x, long y, bool
-WXUNUSED(use16) )
-{
- if (!Ok()) return;
-
-};
-
-
-
-bool wxWindowDC::CanGetTextExtent(void) const
-{
- return TRUE;
-};
-
-void wxWindowDC::GetTextExtent( const wxString &string, long *width, long *height,
- long *WXUNUSED(descent), long *WXUNUSED(externalLeading),
- wxFont *WXUNUSED(theFont), bool WXUNUSED(use16) )
-{
- if (!Ok()) return;
-
-};
-
-long wxWindowDC::GetCharWidth(void)
-{
- if (!Ok()) return 0;
- return 0;
-};
-
-long wxWindowDC::GetCharHeight(void)
-{
- if (!Ok()) return 0;
- return 0;
-};
-
-void wxWindowDC::Clear(void)
-{
- if (!Ok()) return;
-
-};
-
-void wxWindowDC::SetFont( const wxFont &font )
-{
- if (!Ok()) return;
-
- m_font = font;
-};
-
-void wxWindowDC::SetPen( const wxPen &pen )
-{
- if (!Ok()) return;
-
- if (m_pen == pen) return;
-
- m_pen = pen;
-
- if (!m_pen.Ok()) return;
-};
+ m_hDCCount--;
+}
-void wxWindowDC::SetBrush( const wxBrush &brush )
-{
- if (!Ok()) return;
-
- if (m_brush == brush) return;
-
- m_brush = brush;
-
- if (!m_brush.Ok()) return;
-
-};
+// ----------------------------------------------------------------------------
+// wxClientDC
+// ----------------------------------------------------------------------------
-void wxWindowDC::SetBackground( const wxBrush &brush )
+wxClientDC::wxClientDC()
{
- if (!Ok()) return;
-
- if (m_backgroundBrush == brush) return;
-
- m_backgroundBrush = brush;
-
- if (!m_backgroundBrush.Ok()) return;
-
-};
+ m_canvas = NULL;
+}
-void wxWindowDC::SetLogicalFunction( int function )
+wxClientDC::wxClientDC(wxWindow *the_canvas)
{
- if (m_logicalFunction == function) return;
-};
+ m_canvas = the_canvas;
-void wxWindowDC::SetTextForeground( const wxColour &col )
-{
- if (!Ok()) return;
-
- if (m_textForegroundColour == col) return;
-
- m_textForegroundColour = col;
- if (!m_textForegroundColour.Ok()) return;
-};
+ //
+ // default under PM is that Window and Client DC's are the same
+ //
+ m_hDC = (WXHDC) ::WinOpenWindowDC(GetWinHwnd(the_canvas));
-void wxWindowDC::SetTextBackground( const wxColour &col )
-{
- if (!Ok()) return;
-
- if (m_textBackgroundColour == col) return;
-
- m_textBackgroundColour = col;
- if (!m_textBackgroundColour.Ok()) return;
-};
+ //
+ // Default mode is BM_LEAVEALONE so we make no call Set the mix
+ //
+ SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
+}
-void wxWindowDC::SetBackgroundMode( int mode )
+wxClientDC::~wxClientDC()
{
- m_backgroundMode = mode;
-
- if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
+ if ( m_canvas && GetHdc() )
{
- }
-};
-
-void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
-{
-};
-
-void wxWindowDC::SetClippingRegion( long x, long y, long width, long height )
-{
- wxDC::SetClippingRegion( x, y, width, height );
-
- // TODO
-
-};
+ SelectOldObjects(m_hDC);
-void wxWindowDC::SetClippingRegion( const wxRegion& region )
-{
- wxRect box = region.GetBox();
+ // We don't explicitly release Device contexts in PM and
+ // the cached micro PS is already gone
- wxDC::SetClippingRegion( box.x, box.y, box.width, box.height );
+ m_hDC = 0;
+ }
+}
- // TODO
+// ----------------------------------------------------------------------------
+// wxPaintDC
+// ----------------------------------------------------------------------------
+
+// VZ: initial implementation (by JACS) only remembered the last wxPaintDC
+// created and tried to reuse - this was supposed to take care of a
+// situation when a derived class OnPaint() calls base class OnPaint()
+// because in this case ::BeginPaint() shouldn't be called second time.
+//
+// I'm not sure how useful this is, however we must remember the HWND
+// associated with the last HDC as well - otherwise we may (and will!) try
+// to reuse the HDC for another HWND which is a nice recipe for disaster.
+//
+// So we store a list of windows for which we already have the DC and not
+// just one single hDC. This seems to work, but I'm really not sure about
+// the usefullness of the whole idea - IMHO it's much better to not call
+// base class OnPaint() at all, or, if we really want to allow it, add a
+// "wxPaintDC *" parameter to wxPaintEvent which should be used if it's
+// !NULL instead of creating a new DC.
+
+wxArrayDCInfo wxPaintDC::ms_cache;
+
+wxPaintDC::wxPaintDC()
+{
+ m_canvas = NULL;
+ m_hDC = 0;
}
-void wxWindowDC::DestroyClippingRegion(void)
+wxPaintDC::wxPaintDC(wxWindow *canvas)
{
- wxDC::DestroyClippingRegion();
-
-};
+ wxCHECK_RET( canvas, wxT("NULL canvas in wxPaintDC ctor") );
-// ----------------------------------- spline code ----------------------------------------
-
-void wx_quadratic_spline(double a1, double b1, double a2, double b2,
- double a3, double b3, double a4, double b4);
-void wx_clear_stack(void);
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
- double *y3, double *x4, double *y4);
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
- double x4, double y4);
-static bool wx_spline_add_point(double x, double y);
-static void wx_spline_draw_point_array(wxDC *dc);
-
-wxList wx_spline_point_list;
+#ifdef __WXDEBUG__
+ if ( g_isPainting <= 0 )
+ {
+ wxFAIL_MSG( wxT("wxPaintDC may be created only in EVT_PAINT handler!") );
-#define half(z1, z2) ((z1+z2)/2.0)
-#define THRESHOLD 5
+ return;
+ }
+#endif // __WXDEBUG__
-/* iterative version */
+ m_canvas = canvas;
-void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
- double b4)
-{
- register double xmid, ymid;
- double x1, y1, x2, y2, x3, y3, x4, y4;
-
- wx_clear_stack();
- wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
-
- while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
- xmid = (double)half(x2, x3);
- ymid = (double)half(y2, y3);
- if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
- fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
- wx_spline_add_point( x1, y1 );
- wx_spline_add_point( xmid, ymid );
- } else {
- wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
- (double)half(x3, x4), (double)half(y3, y4), x4, y4);
- wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
- (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
- }
+ // do we have a DC for this window in the cache?
+ wxPaintDCInfo *info = FindInCache();
+ if ( info )
+ {
+ m_hDC = info->hdc;
+ info->count++;
+ }
+ else // not in cache, create a new one
+ {
+ m_hDC = (WXHDC)::WinBeginPaint(GetWinHwnd(m_canvas), NULLHANDLE, &g_paintStruct);
+ ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
}
+ SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
}
-/* utilities used by spline drawing routines */
-
-typedef struct wx_spline_stack_struct {
- double x1, y1, x2, y2, x3, y3, x4, y4;
-} Stack;
-
-#define SPLINE_STACK_DEPTH 20
-static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
-static Stack *wx_stack_top;
-static int wx_stack_count;
-
-void wx_clear_stack(void)
+wxPaintDC::~wxPaintDC()
{
- wx_stack_top = wx_spline_stack;
- wx_stack_count = 0;
-}
+ if ( m_hDC )
+ {
+ SelectOldObjects(m_hDC);
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
-{
- wx_stack_top->x1 = x1;
- wx_stack_top->y1 = y1;
- wx_stack_top->x2 = x2;
- wx_stack_top->y2 = y2;
- wx_stack_top->x3 = x3;
- wx_stack_top->y3 = y3;
- wx_stack_top->x4 = x4;
- wx_stack_top->y4 = y4;
- wx_stack_top++;
- wx_stack_count++;
-}
+ size_t index;
+ wxPaintDCInfo *info = FindInCache(&index);
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
- double *x3, double *y3, double *x4, double *y4)
-{
- if (wx_stack_count == 0)
- return (0);
- wx_stack_top--;
- wx_stack_count--;
- *x1 = wx_stack_top->x1;
- *y1 = wx_stack_top->y1;
- *x2 = wx_stack_top->x2;
- *y2 = wx_stack_top->y2;
- *x3 = wx_stack_top->x3;
- *y3 = wx_stack_top->y3;
- *x4 = wx_stack_top->x4;
- *y4 = wx_stack_top->y4;
- return (1);
-}
+ wxCHECK_RET( info, wxT("existing DC should have a cache entry") );
-static bool wx_spline_add_point(double x, double y)
-{
- wxPoint *point = new wxPoint ;
- point->x = (int) x;
- point->y = (int) y;
- wx_spline_point_list.Append((wxObject*)point);
- return TRUE;
-}
+ if ( !--info->count )
+ {
+ ::WinEndPaint(m_hPS);
-static void wx_spline_draw_point_array(wxDC *dc)
-{
- dc->DrawLines(&wx_spline_point_list, 0, 0 );
- wxNode *node = wx_spline_point_list.First();
- while (node)
- {
- wxPoint *point = (wxPoint *)node->Data();
- delete point;
- delete node;
- node = wx_spline_point_list.First();
- }
+ ms_cache.Remove(index);
+ }
+ //else: cached DC entry is still in use
+
+ // prevent the base class dtor from ReleaseDC()ing it again
+ m_hDC = 0;
+ }
}
-void wxWindowDC::DrawSpline( wxList *points )
+wxPaintDCInfo *wxPaintDC::FindInCache(size_t *index) const
{
- wxPoint *p;
- double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
- double x1, y1, x2, y2;
-
- wxNode *node = points->First();
- p = (wxPoint *)node->Data();
-
- x1 = p->x;
- y1 = p->y;
-
- node = node->Next();
- p = (wxPoint *)node->Data();
-
- x2 = p->x;
- y2 = p->y;
- cx1 = (double)((x1 + x2) / 2);
- cy1 = (double)((y1 + y2) / 2);
- cx2 = (double)((cx1 + x2) / 2);
- cy2 = (double)((cy1 + y2) / 2);
-
- wx_spline_add_point(x1, y1);
-
- while ((node = node->Next()) != NULL)
+ wxPaintDCInfo *info = NULL;
+ size_t nCache = ms_cache.GetCount();
+ for ( size_t n = 0; n < nCache; n++ )
{
- p = (wxPoint *)node->Data();
- x1 = x2;
- y1 = y2;
- x2 = p->x;
- y2 = p->y;
- cx4 = (double)(x1 + x2) / 2;
- cy4 = (double)(y1 + y2) / 2;
- cx3 = (double)(x1 + cx4) / 2;
- cy3 = (double)(y1 + cy4) / 2;
-
- wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
-
- cx1 = cx4;
- cy1 = cy4;
- cx2 = (double)(cx1 + x2) / 2;
- cy2 = (double)(cy1 + y2) / 2;
+ info = &ms_cache[n];
+ if ( info->hwnd == m_canvas->GetHWND() )
+ {
+ if ( index )
+ *index = n;
+ break;
+ }
}
- wx_spline_add_point( cx1, cy1 );
- wx_spline_add_point( x2, y2 );
-
- wx_spline_draw_point_array( this );
-};
+ return info;
+}
projects / wxWidgets.git / blobdiff