X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/28b4db7f890258e83fa0a57ea85c72585e48b756..80a779275ae04443c568dca919adb26cf6f5002c:/src/common/dcbase.cpp?ds=sidebyside diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp index 77b09b154b..84ac42aa3c 100644 --- a/src/common/dcbase.cpp +++ b/src/common/dcbase.cpp @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: common/dcbase.cpp +// Name: src/common/dcbase.cpp // Purpose: generic methods of the wxDC Class // Author: Vadim Zeitlin // Modified by: // Created: 05/25/99 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -13,10 +13,6 @@ // declarations // ============================================================================ -#ifdef __GNUG__ - #pragma implementation "dcbase.h" -#endif - // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- @@ -29,15 +25,33 @@ #endif #include "wx/dc.h" +#include "wx/dcbuffer.h" // for IMPLEMENT_DYNAMIC_CLASS -#include +#ifndef WX_PRECOMP + #include "wx/math.h" +#endif -// bool wxDCBase::sm_cacheing = FALSE; +// bool wxDCBase::sm_cacheing = false; + +IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject) // ============================================================================ // implementation // ============================================================================ +IMPLEMENT_DYNAMIC_CLASS(wxBufferedDC, wxMemoryDC) +IMPLEMENT_ABSTRACT_CLASS(wxBufferedPaintDC, wxBufferedDC) + +#if WXWIN_COMPATIBILITY_2_6 +void wxDCBase::BeginDrawing() +{ +} + +void wxDCBase::EndDrawing() +{ +} +#endif // WXWIN_COMPATIBILITY_2_6 + // ---------------------------------------------------------------------------- // special symbols // ---------------------------------------------------------------------------- @@ -106,6 +120,49 @@ void wxDCBase::DrawPolygon(const wxList *list, delete [] points; } +void +wxDCBase::DoDrawPolyPolygon(int n, + int count[], + wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + int fillStyle) +{ + if ( n == 1 ) + { + DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle); + return; + } + + int i, j, lastOfs; + wxPoint* pts; + wxPen pen; + + for (i = j = lastOfs = 0; i < n; i++) + { + lastOfs = j; + j += count[i]; + } + pts = new wxPoint[j+n-1]; + for (i = 0; i < j; i++) + pts[i] = points[i]; + for (i = 2; i <= n; i++) + { + lastOfs -= count[n-i]; + pts[j++] = pts[lastOfs]; + } + + pen = GetPen(); + SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT)); + DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); + SetPen(pen); + for (i = j = 0; i < n; i++) + { + DoDrawLines(count[i], pts+j, xoffset, yoffset); + j += count[i]; + } + delete[] pts; +} + // ---------------------------------------------------------------------------- // splines // ---------------------------------------------------------------------------- @@ -248,7 +305,7 @@ static bool wx_spline_add_point(double x, double y) point->x = (int) x; point->y = (int) y; wx_spline_point_list.Append((wxObject*)point); - return TRUE; + return true; } static void wx_spline_draw_point_array(wxDCBase *dc) @@ -273,6 +330,10 @@ void wxDCBase::DoDrawSpline( wxList *points ) double x1, y1, x2, y2; wxList::compatibility_iterator node = points->GetFirst(); + if (node == wxList::compatibility_iterator()) + // empty list + return; + p = (wxPoint *)node->GetData(); x1 = p->x; @@ -322,6 +383,85 @@ void wxDCBase::DoDrawSpline( wxList *points ) #endif // wxUSE_SPLINES +// ---------------------------------------------------------------------------- +// Partial Text Extents +// ---------------------------------------------------------------------------- + + +// Each element of the widths array will be the width of the string up to and +// including the corresponding character in text. This is the generic +// implementation, the port-specific classes should do this with native APIs +// if available and if faster. Note: pango_layout_index_to_pos is much slower +// than calling GetTextExtent!! + +#define FWC_SIZE 256 + +class FontWidthCache +{ +public: + FontWidthCache() : m_scaleX(1), m_widths(NULL) { } + ~FontWidthCache() { delete []m_widths; } + + void Reset() + { + if (!m_widths) + m_widths = new int[FWC_SIZE]; + + memset(m_widths, 0, sizeof(int)*FWC_SIZE); + } + + wxFont m_font; + double m_scaleX; + int *m_widths; +}; + +static FontWidthCache s_fontWidthCache; + +bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const +{ + int totalWidth = 0; + + const size_t len = text.length(); + widths.Empty(); + widths.Add(0, len); + + // reset the cache if font or horizontal scale have changed + if ( !s_fontWidthCache.m_widths || + !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) || + (s_fontWidthCache.m_font != GetFont()) ) + { + s_fontWidthCache.Reset(); + s_fontWidthCache.m_font = GetFont(); + s_fontWidthCache.m_scaleX = m_scaleX; + } + + // Calculate the position of each character based on the widths of + // the previous characters + int w, h; + for ( size_t i = 0; i < len; i++ ) + { + const wxChar c = text[i]; + unsigned int c_int = (unsigned int)c; + + if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0)) + { + w = s_fontWidthCache.m_widths[c_int]; + } + else + { + GetTextExtent(c, &w, &h); + if (c_int < FWC_SIZE) + s_fontWidthCache.m_widths[c_int] = w; + } + + totalWidth += w; + widths[i] = totalWidth; + } + + return true; +} + + // ---------------------------------------------------------------------------- // enhanced text drawing // ---------------------------------------------------------------------------- @@ -449,7 +589,7 @@ void wxDCBase::DrawLabel(const wxString& text, width0 = width; if ( bitmap.Ok() ) { - DrawBitmap(bitmap, x, y, TRUE /* use mask */); + DrawBitmap(bitmap, x, y, true /* use mask */); wxCoord offset = bitmap.GetWidth() + 4; x += offset; @@ -548,3 +688,821 @@ void wxDCBase::DrawLabel(const wxString& text, CalcBoundingBox(x0, y0); CalcBoundingBox(x0 + width0, y0 + height); } + + +void wxDCBase::DoGradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection) +{ + // save old pen + wxPen oldPen = m_pen; + + wxUint8 nR1 = destColour.Red(); + wxUint8 nG1 = destColour.Green(); + wxUint8 nB1 = destColour.Blue(); + wxUint8 nR2 = initialColour.Red(); + wxUint8 nG2 = initialColour.Green(); + wxUint8 nB2 = initialColour.Blue(); + wxUint8 nR, nG, nB; + + if ( nDirection == wxEAST || nDirection == wxWEST ) + { + wxInt32 x = rect.GetWidth(); + wxInt32 w = x; // width of area to shade + wxInt32 xDelta = w/256; // height of one shade bend + if (xDelta < 1) + xDelta = 1; + + while (x >= xDelta) + { + x -= xDelta; + if (nR1 > nR2) + nR = nR1 - (nR1-nR2)*(w-x)/w; + else + nR = nR1 + (nR2-nR1)*(w-x)/w; + + if (nG1 > nG2) + nG = nG1 - (nG1-nG2)*(w-x)/w; + else + nG = nG1 + (nG2-nG1)*(w-x)/w; + + if (nB1 > nB2) + nB = nB1 - (nB1-nB2)*(w-x)/w; + else + nB = nB1 + (nB2-nB1)*(w-x)/w; + + SetPen(wxPen(wxColour(nR, nG, nB), 1, wxSOLID)); + if(nDirection == wxEAST) + DrawRectangle(rect.GetLeft()+x, rect.GetTop(), + xDelta, rect.GetHeight()); + else //nDirection == wxWEST + DrawRectangle(rect.GetRight()-x-xDelta, rect.GetTop(), + xDelta, rect.GetHeight()); + } + } + else // nDirection == wxNORTH || nDirection == wxSOUTH + { + wxInt32 y = rect.GetHeight(); + wxInt32 w = y; // height of area to shade + wxInt32 yDelta = w/255; // height of one shade bend + if (yDelta < 1) + yDelta = 1; + + while (y > 0) + { + y -= yDelta; + if (nR1 > nR2) + nR = nR1 - (nR1-nR2)*(w-y)/w; + else + nR = nR1 + (nR2-nR1)*(w-y)/w; + + if (nG1 > nG2) + nG = nG1 - (nG1-nG2)*(w-y)/w; + else + nG = nG1 + (nG2-nG1)*(w-y)/w; + + if (nB1 > nB2) + nB = nB1 - (nB1-nB2)*(w-y)/w; + else + nB = nB1 + (nB2-nB1)*(w-y)/w; + + SetPen(wxPen(wxColour(nR, nG, nB), 1, wxSOLID)); + if(nDirection == wxNORTH) + DrawRectangle(rect.GetLeft(), rect.GetTop()+y, + rect.GetWidth(), yDelta); + else //nDirection == wxSOUTH + DrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta, + rect.GetWidth(), yDelta); + } + } + + SetPen(oldPen); +} + +void wxDCBase::DoGradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + const wxPoint& circleCenter) +{ + //save the old pen color + wxColour oldPenColour = m_pen.GetColour(); + + wxUint8 nR1 = destColour.Red(); + wxUint8 nG1 = destColour.Green(); + wxUint8 nB1 = destColour.Blue(); + wxUint8 nR2 = initialColour.Red(); + wxUint8 nG2 = initialColour.Green(); + wxUint8 nB2 = initialColour.Blue(); + wxUint8 nR, nG, nB; + + + //Radius + wxInt32 cx = rect.GetWidth() / 2; + wxInt32 cy = rect.GetHeight() / 2; + wxInt32 nRadius; + if (cx < cy) + nRadius = cx; + else + nRadius = cy; + + //Offset of circle + wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2); + wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2); + + for ( wxInt32 x = 0; x < rect.GetWidth(); x++ ) + { + for ( wxInt32 y = 0; y < rect.GetHeight(); y++ ) + { + //get color difference + wxInt32 nGradient = ((nRadius - + (wxInt32)sqrt( + pow((double)(x - cx - nCircleOffX), 2) + + pow((double)(y - cy - nCircleOffY), 2) + )) * 100) / nRadius; + + //normalize Gradient + if (nGradient < 0 ) + nGradient = 0; + + //get dest colors + nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100)); + nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100)); + nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100)); + + //set the pixel + m_pen.SetColour(wxColour(nR,nG,nB)); + DrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop())); + } + } + //return old pen color + m_pen.SetColour(oldPenColour); +} + +/* +Notes for wxWidgets DrawEllipticArcRot(...) + +wxDCBase::DrawEllipticArcRot(...) draws a rotated elliptic arc or an ellipse. +It uses wxDCBase::CalculateEllipticPoints(...) and wxDCBase::Rotate(...), +which are also new. + +All methods are generic, so they can be implemented in wxDCBase. +DoDrawEllipticArcRot(...) is virtual, so it can be called from deeper +methods like (WinCE) wxDC::DoDrawArc(...). + +CalculateEllipticPoints(...) fills a given list of wxPoints with some points +of an elliptic arc. The algorithm is pixel-based: In every row (in flat +parts) or every column (in steep parts) only one pixel is calculated. +Trigonometric calculation (sin, cos, tan, atan) is only done if the +starting angle is not equal to the ending angle. The calculation of the +pixels is done using simple arithmetic only and should perform not too +bad even on devices without floating point processor. I didn't test this yet. + +Rotate(...) rotates a list of point pixel-based, you will see rounding errors. +For instance: an ellipse rotated 180 degrees is drawn +slightly different from the original. + +The points are then moved to an array and used to draw a polyline and/or polygon +(with center added, the pie). +The result looks quite similar to the native ellipse, only e few pixels differ. + +The performance on a desktop system (Athlon 1800, WinXP) is about 7 times +slower as DrawEllipse(...), which calls the native API. +An rotated ellipse outside the clipping region takes nearly the same time, +while an native ellipse outside takes nearly no time to draw. + +If you draw an arc with this new method, you will see the starting and ending angles +are calculated properly. +If you use DrawEllipticArc(...), you will see they are only correct for circles +and not properly calculated for ellipses. + +Peter Lenhard +p.lenhard@t-online.de +*/ + +#ifdef __WXWINCE__ +void wxDCBase::DoDrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord w, wxCoord h, + double sa, double ea, double angle ) +{ + wxList list; + + CalculateEllipticPoints( &list, x, y, w, h, sa, ea ); + Rotate( &list, angle, wxPoint( x+w/2, y+h/2 ) ); + + // Add center (for polygon/pie) + list.Append( (wxObject*) new wxPoint( x+w/2, y+h/2 ) ); + + // copy list into array and delete list elements + int n = list.GetCount(); + wxPoint *points = new wxPoint[n]; + int i = 0; + wxNode* node = 0; + for ( node = list.GetFirst(); node; node = node->GetNext(), i++ ) + { + wxPoint *point = (wxPoint *)node->GetData(); + points[i].x = point->x; + points[i].y = point->y; + delete point; + } + + // first draw the pie without pen, if necessary + if( GetBrush() != *wxTRANSPARENT_BRUSH ) + { + wxPen tempPen( GetPen() ); + SetPen( *wxTRANSPARENT_PEN ); + DoDrawPolygon( n, points, 0, 0 ); + SetPen( tempPen ); + } + + // then draw the arc without brush, if necessary + if( GetPen() != *wxTRANSPARENT_PEN ) + { + // without center + DoDrawLines( n-1, points, 0, 0 ); + } + + delete [] points; + +} // DrawEllipticArcRot + +void wxDCBase::Rotate( wxList* points, double angle, wxPoint center ) +{ + if( angle != 0.0 ) + { + double pi(M_PI); + double dSinA = -sin(angle*2.0*pi/360.0); + double dCosA = cos(angle*2.0*pi/360.0); + for ( wxNode* node = points->GetFirst(); node; node = node->GetNext() ) + { + wxPoint* point = (wxPoint*)node->GetData(); + + // transform coordinates, if necessary + if( center.x ) point->x -= center.x; + if( center.y ) point->y -= center.y; + + // calculate rotation, rounding simply by implicit cast to integer + int xTemp = point->x * dCosA - point->y * dSinA; + point->y = point->x * dSinA + point->y * dCosA; + point->x = xTemp; + + // back transform coordinates, if necessary + if( center.x ) point->x += center.x; + if( center.y ) point->y += center.y; + } + } +} + +void wxDCBase::CalculateEllipticPoints( wxList* points, + wxCoord xStart, wxCoord yStart, + wxCoord w, wxCoord h, + double sa, double ea ) +{ + double pi = M_PI; + double sar = 0; + double ear = 0; + int xsa = 0; + int ysa = 0; + int xea = 0; + int yea = 0; + int sq = 0; + int eq = 0; + bool bUseAngles = false; + if( w<0 ) w = -w; + if( h<0 ) h = -h; + // half-axes + wxCoord a = w/2; + wxCoord b = h/2; + // decrement 1 pixel if ellipse is smaller than 2*a, 2*b + int decrX = 0; + if( 2*a == w ) decrX = 1; + int decrY = 0; + if( 2*b == h ) decrY = 1; + // center + wxCoord xCenter = xStart + a; + wxCoord yCenter = yStart + b; + // calculate data for start and end, if necessary + if( sa != ea ) + { + bUseAngles = true; + // normalisation of angles + while( sa<0 ) sa += 360; + while( ea<0 ) ea += 360; + while( sa>=360 ) sa -= 360; + while( ea>=360 ) ea -= 360; + // calculate quadrant numbers + if( sa > 270 ) sq = 3; + else if( sa > 180 ) sq = 2; + else if( sa > 90 ) sq = 1; + if( ea > 270 ) eq = 3; + else if( ea > 180 ) eq = 2; + else if( ea > 90 ) eq = 1; + sar = sa * pi / 180.0; + ear = ea * pi / 180.0; + // correct angle circle -> ellipse + sar = atan( -a/(double)b * tan( sar ) ); + if ( sq == 1 || sq == 2 ) sar += pi; + ear = atan( -a/(double)b * tan( ear ) ); + if ( eq == 1 || eq == 2 ) ear += pi; + // coordinates of points + xsa = xCenter + a * cos( sar ); + if( sq == 0 || sq == 3 ) xsa -= decrX; + ysa = yCenter + b * sin( sar ); + if( sq == 2 || sq == 3 ) ysa -= decrY; + xea = xCenter + a * cos( ear ); + if( eq == 0 || eq == 3 ) xea -= decrX; + yea = yCenter + b * sin( ear ); + if( eq == 2 || eq == 3 ) yea -= decrY; + } // if iUseAngles + // calculate c1 = b^2, c2 = b^2/a^2 with a = w/2, b = h/2 + double c1 = b * b; + double c2 = 2.0 / w; + c2 *= c2; + c2 *= c1; + wxCoord x = 0; + wxCoord y = b; + long x2 = 1; + long y2 = y*y; + long y2_old = 0; + long y_old = 0; + // Lists for quadrant 1 to 4 + wxList pointsarray[4]; + // Calculate points for first quadrant and set in all quadrants + for( x = 0; x <= a; ++x ) + { + x2 = x2+x+x-1; + y2_old = y2; + y_old = y; + bool bNewPoint = false; + while( y2 > c1 - c2 * x2 && y > 0 ) + { + bNewPoint = true; + y2 = y2-y-y+1; + --y; + } + // old y now to big: set point with old y, old x + if( bNewPoint && x>1) + { + int x1 = x - 1; + // remove points on the same line + pointsarray[0].Insert( (wxObject*) new wxPoint( xCenter + x1 - decrX, yCenter - y_old ) ); + pointsarray[1].Append( (wxObject*) new wxPoint( xCenter - x1, yCenter - y_old ) ); + pointsarray[2].Insert( (wxObject*) new wxPoint( xCenter - x1, yCenter + y_old - decrY ) ); + pointsarray[3].Append( (wxObject*) new wxPoint( xCenter + x1 - decrX, yCenter + y_old - decrY ) ); + } // set point + } // calculate point + + // Starting and/or ending points for the quadrants, first quadrant gets both. + pointsarray[0].Insert( (wxObject*) new wxPoint( xCenter + a - decrX, yCenter ) ); + pointsarray[0].Append( (wxObject*) new wxPoint( xCenter, yCenter - b ) ); + pointsarray[1].Append( (wxObject*) new wxPoint( xCenter - a, yCenter ) ); + pointsarray[2].Append( (wxObject*) new wxPoint( xCenter, yCenter + b - decrY ) ); + pointsarray[3].Append( (wxObject*) new wxPoint( xCenter + a - decrX, yCenter ) ); + + // copy quadrants in original list + if( bUseAngles ) + { + // Copy the right part of the points in the lists + // and delete the wxPoints, because they do not leave this method. + points->Append( (wxObject*) new wxPoint( xsa, ysa ) ); + int q = sq; + bool bStarted = false; + bool bReady = false; + bool bForceTurn = ( sq == eq && sa > ea ); + while( !bReady ) + { + for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() ) + { + // once: go to starting point in start quadrant + if( !bStarted && + ( + ( (wxPoint*) node->GetData() )->x < xsa+1 && q <= 1 + || + ( (wxPoint*) node->GetData() )->x > xsa-1 && q >= 2 + ) + ) + { + bStarted = true; + } + + // copy point, if not at ending point + if( bStarted ) + { + if( q != eq || bForceTurn + || + ( (wxPoint*) node->GetData() )->x > xea+1 && q <= 1 + || + ( (wxPoint*) node->GetData() )->x < xea-1 && q >= 2 + ) + { + // copy point + wxPoint* pPoint = new wxPoint( *((wxPoint*) node->GetData() ) ); + points->Append( (wxObject*) pPoint ); + } + else if( q == eq && !bForceTurn || ( (wxPoint*) node->GetData() )->x == xea) + { + bReady = true; + } + } + } // for node + ++q; + if( q > 3 ) q = 0; + bForceTurn = false; + bStarted = true; + } // while not bReady + points->Append( (wxObject*) new wxPoint( xea, yea ) ); + + // delete points + for( q = 0; q < 4; ++q ) + { + for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = (wxPoint *)node->GetData(); + delete p; + } + } + } + else + { + wxNode* node; + // copy whole ellipse, wxPoints will be deleted outside + for( node = pointsarray[0].GetFirst(); node; node = node->GetNext() ) + { + wxObject *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[1].GetFirst(); node; node = node->GetNext() ) + { + wxObject *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[2].GetFirst(); node; node = node->GetNext() ) + { + wxObject *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[3].GetFirst(); node; node = node->GetNext() ) + { + wxObject *p = node->GetData(); + points->Append( p ); + } + } // not iUseAngles +} // CalculateEllipticPoints + +#endif + +// +// temporary home for wxOverlay +// + +#include "wx/dcclient.h" +#include "wx/dcmemory.h" + +#if defined(wxMAC_USE_CORE_GRAPHICS) && wxMAC_USE_CORE_GRAPHICS + +#include "wx/mac/private.h" +#include "wx/toplevel.h" + +class wxOverlayImpl +{ +public: + wxOverlayImpl() ; + ~wxOverlayImpl() ; + + + // clears the overlay without restoring the former state + // to be done eg when the window content has been changed and repainted + void Reset(); + + // returns true if it has been setup + bool IsOk(); + + void Init( wxWindowDC* dc, int x , int y , int width , int height ); + + void BeginDrawing( wxWindowDC* dc); + + void EndDrawing( wxWindowDC* dc); + + void Clear( wxWindowDC* dc); + +private: + OSStatus CreateOverlayWindow(); + + void MacGetBounds( Rect *bounds ); + + WindowRef m_overlayWindow; + WindowRef m_overlayParentWindow; + CGContextRef m_overlayContext ; + // we store the window in case we would have to issue a Refresh() + wxWindow* m_window ; + + int m_x ; + int m_y ; + int m_width ; + int m_height ; +} ; + +wxOverlayImpl::wxOverlayImpl() +{ + m_window = NULL ; + m_overlayContext = NULL ; + m_overlayWindow = NULL ; +} + +wxOverlayImpl::~wxOverlayImpl() +{ + Reset(); +} + +bool wxOverlayImpl::IsOk() +{ + return m_overlayWindow != NULL ; +} + +void wxOverlayImpl::MacGetBounds( Rect *bounds ) +{ + wxPoint origin(0,0); + origin = m_window->ClientToScreen( origin ); + bounds->top = origin.y; + bounds->left = origin.x; + bounds->bottom = origin.y+m_y+m_height; + bounds->right = origin.x+m_x+m_width; +} + +OSStatus wxOverlayImpl::CreateOverlayWindow() +{ + OSStatus err; + + WindowAttributes overlayAttributes = kWindowIgnoreClicksAttribute; + + m_overlayParentWindow =(WindowRef) m_window->MacGetTopLevelWindowRef(); + + Rect bounds ; + MacGetBounds(&bounds); + err = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow ); + if ( err == noErr ) + { + SetWindowGroup( m_overlayWindow, GetWindowGroup(m_overlayParentWindow)); // Put them in the same group so that their window layers are consistent + ShowWindow(m_overlayWindow); + } + return err; +} + +void wxOverlayImpl::Init( wxWindowDC* dc, int x , int y , int width , int height ) +{ + wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") ); + + m_window = dc->GetWindow(); + m_x = x ; + m_y = y ; + m_width = width ; + m_height = height ; + + OSStatus err = CreateOverlayWindow(); + wxASSERT_MSG( err == noErr , _("Couldn't create the overlay window") ); +#ifndef __LP64__ + err = QDBeginCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext); +#endif + CGContextTranslateCTM( m_overlayContext, 0, m_height+m_y ); + CGContextScaleCTM( m_overlayContext, 1, -1 ); + wxASSERT_MSG( err == noErr , _("Couldn't init the context on the overlay window") ); +} + +void wxOverlayImpl::BeginDrawing( wxWindowDC* dc) +{ + delete dc->m_graphicContext ; + dc->m_graphicContext = new wxMacCGContext( m_overlayContext ); + // we are right now startin at 0,0 not at the wxWindow's origin, so most of the calculations + // int dc are already corect + // just to make sure : + dc->m_macLocalOrigin.x = 0 ; + dc->m_macLocalOrigin.y = 0 ; + wxSize size = m_window->GetSize() ; + dc->SetClippingRegion( 0 , 0 , size.x , size.y ) ; +} + +void wxOverlayImpl::EndDrawing( wxWindowDC* dc) +{ + delete dc->m_graphicContext ; + dc->m_graphicContext = NULL ; + +} + +void wxOverlayImpl::Clear(wxWindowDC* dc) +{ + wxASSERT_MSG( IsOk() , _("You cannot Clear an overlay that is not inited") ); + CGRect box = CGRectMake( m_x - 1, m_y - 1 , m_width + 2 , m_height + 2 ); + CGContextClearRect( m_overlayContext, box ); +} + +void wxOverlayImpl::Reset() +{ + if ( m_overlayContext ) + { +#ifndef __LP64__ + OSStatus err = QDEndCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext); + wxASSERT_MSG( err == noErr , _("Couldn't end the context on the overlay window") ); +#endif + m_overlayContext = NULL ; + } + + // todo : don't dispose, only hide and reposition on next run + if (m_overlayWindow) + { + DisposeWindow(m_overlayWindow); + m_overlayWindow = NULL ; + } +} + +// +// +// + +#else // ie not wxMAC_USE_CORE_GRAPHICS + +class wxOverlayImpl +{ +public: + wxOverlayImpl() ; + ~wxOverlayImpl() ; + + + // clears the overlay without restoring the former state + // to be done eg when the window content has been changed and repainted + void Reset(); + + // returns true if it has been setup + bool IsOk(); + + void Init( wxWindowDC* dc, int x , int y , int width , int height ); + + void BeginDrawing( wxWindowDC* dc); + + void EndDrawing( wxWindowDC* dc); + + void Clear( wxWindowDC* dc); + +private: + wxBitmap m_bmpSaved ; + int m_x ; + int m_y ; + int m_width ; + int m_height ; +// this is to enable wxMOTIF and UNIV to compile.... +// currently (10 oct 06) we don't use m_window +// ce - how do we fix this +#if defined(__WXGTK__) || defined(__WXMSW__) +// + wxWindow* m_window ; +#endif +} ; + +wxOverlayImpl::wxOverlayImpl() +{ +#if defined(__WXGTK__) || defined(__WXMSW__) + m_window = NULL ; +#endif + m_x = m_y = m_width = m_height = 0 ; +} + +wxOverlayImpl::~wxOverlayImpl() +{ +} + +bool wxOverlayImpl::IsOk() +{ + return m_bmpSaved.Ok() ; +} + +void wxOverlayImpl::Init( wxWindowDC* dc, int x , int y , int width , int height ) +{ +#if defined(__WXGTK__) + m_window = dc->m_owner; +#else + #if defined (__WXMSW__) + m_window = dc->GetWindow(); + #endif // __WXMSW__ + +#endif + wxMemoryDC dcMem ; + m_bmpSaved.Create( width, height ); + dcMem.SelectObject( m_bmpSaved ); + m_x = x ; + m_y = y ; + m_width = width ; + m_height = height ; +#if defined(__WXGTK__) && !defined(__WX_DC_BLIT_FIXED__) + wxPoint pt = dc->GetDeviceOrigin(); + x += pt.x; + y += pt.y; +#endif // broken wxGTK wxDC::Blit + dcMem.Blit(0, 0, m_width, m_height, + dc, x, y); + dcMem.SelectObject( wxNullBitmap ); +} + +void wxOverlayImpl::Clear(wxWindowDC* dc) +{ + wxMemoryDC dcMem ; + dcMem.SelectObject( m_bmpSaved ); + dc->Blit( m_x, m_y, m_width, m_height , &dcMem , 0 , 0 ); + dcMem.SelectObject( wxNullBitmap ); +} + +void wxOverlayImpl::Reset() +{ + m_bmpSaved = wxBitmap(); +} + +void wxOverlayImpl::BeginDrawing(wxWindowDC* WXUNUSED(dc)) +{ +} + +void wxOverlayImpl::EndDrawing(wxWindowDC* WXUNUSED(dc)) +{ +} + +#endif + +// common code + +wxOverlay::wxOverlay() +{ + m_impl = new wxOverlayImpl(); + m_inDrawing = false; +} + +wxOverlay::~wxOverlay() +{ + wxDELETE( m_impl ); +} + +bool wxOverlay::IsOk() +{ + return m_impl->IsOk(); +} + +void wxOverlay::Init( wxWindowDC* dc, int x , int y , int width , int height ) +{ + m_impl->Init(dc, x, y, width, height); +} + +void wxOverlay::BeginDrawing( wxWindowDC* dc) +{ + m_impl->BeginDrawing(dc); + m_inDrawing = true ; +} + +void wxOverlay::EndDrawing( wxWindowDC* dc) +{ + m_impl->EndDrawing(dc); + m_inDrawing = false ; +} + +void wxOverlay::Clear( wxWindowDC* dc) +{ + m_impl->Clear(dc); +} + +void wxOverlay::Reset() +{ + wxASSERT_MSG(m_inDrawing==false,wxT("cannot reset overlay during drawing")); + m_impl->Reset(); +} + +// dc connector + +wxDCOverlay::wxDCOverlay(wxOverlay &overlay, wxWindowDC *dc, int x , int y , int width , int height) : + m_overlay(overlay) +{ + Init(dc, x, y, width, height); +} + +wxDCOverlay::wxDCOverlay(wxOverlay &overlay, wxWindowDC *dc) : + m_overlay(overlay) +{ + int width; + int height; + dc->GetSize(&width,&height); + Init(dc, 0, 0, width, height); +} + +wxDCOverlay::~wxDCOverlay() +{ + m_overlay.EndDrawing(m_dc); +} + +void wxDCOverlay::Init(wxWindowDC *dc, int x , int y , int width , int height ) +{ + m_dc = dc ; + if ( !m_overlay.IsOk() ) + { + m_overlay.Init(dc,x,y,width,height); + } + m_overlay.BeginDrawing(dc); +} + +void wxDCOverlay::Clear() +{ + m_overlay.Clear(m_dc); +}