#include <string.h>
#include <math.h>
-#include <fstream.h>
-#if USE_COMMON_DIALOGS
+#if wxUSE_COMMON_DIALOGS
#include <commdlg.h>
#endif
// Default constructor
wxDC::wxDC(void)
{
- // Stop internal GDI objects being found and pointers kept
- // after these objects have been deleted.
- // No - it's OK; these lists won't return them
- // because their 'visible' status will be FALSE.
-/*
- wxTheFontList->RemoveFont(&m_font);
- wxThePenList->RemovePen(&m_pen);
- wxTheBrushList->RemoveBrush(&m_brush);
- wxTheBrushList->RemoveBrush(&m_backgroundBrush);
-*/
-
m_minX = 0; m_minY = 0; m_maxX = 0; m_maxY = 0;
m_clipping = FALSE;
- m_autoSetting = TRUE ;
-// m_scaleGDI = TRUE;
m_filename = "";
-// m_selectedBitmap = NULL;
m_canvas = NULL;
-/*
- cur_dc = NULL ;
- cur_bk = 0 ;
- cur_cpen = NULL ;
- cur_cbrush = NULL ;
-*/
m_oldBitmap = 0;
m_oldPen = 0;
m_oldBrush = 0;
m_oldFont = 0;
m_oldPalette = 0;
m_minX = 0; m_minY = 0; m_maxX = 0; m_maxY = 0;
-// m_font = NULL;
m_logicalOriginX = 0;
m_logicalOriginY = 0;
m_deviceOriginX = 0;
m_logicalScaleY = 1.0;
m_userScaleX = 1.0;
m_userScaleY = 1.0;
+ m_signX = 1;
+ m_signY = 1;
m_systemScaleX = 1.0;
m_systemScaleY = 1.0;
m_mappingMode = MM_TEXT;
-// m_dontDelete = FALSE;
m_bOwnsDC = FALSE;
m_hDC = 0;
m_clipping = FALSE;
m_logicalFunction = -1;
m_backgroundBrush = *wxWHITE_BRUSH;
-// m_backgroundBrush.UseResource();
m_textForegroundColour = *wxBLACK;
m_textBackgroundColour = *wxWHITE;
}
}
-/*
- if (m_hDC)
- {
- SelectOldObjects(m_hDC);
- ::DeleteDC((HDC) m_hDC);
- }
-*/
}
// This will select current objects out of the DC,
// DC.
void wxDC::SelectOldObjects(WXHDC dc)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects %X\n", this);
#endif
if (dc)
{
if (m_oldBitmap)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Selecting old HBITMAP %X\n", m_oldBitmap);
#endif
::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
m_oldBitmap = 0 ;
if (m_oldPen)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Selecting old HPEN %X\n", m_oldPen);
#endif
::SelectObject((HDC) dc, (HPEN) m_oldPen);
m_oldPen = 0 ;
if (m_oldBrush)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Selecting old HBRUSH %X\n", m_oldBrush);
#endif
::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
m_oldBrush = 0 ;
if (m_oldFont)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Selecting old HFONT %X\n", m_oldFont);
#endif
::SelectObject((HDC) dc, (HFONT) m_oldFont);
m_oldFont = 0 ;
if (m_oldPalette)
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Selecting old HPALETTE %X\n", m_oldPalette);
#endif
::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
}
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SelectOldObjects: Done.\n");
#endif
m_oldPalette = 0 ;
}
-/*
- if (m_font.Ok())
- m_font.ReleaseResource();
- if (m_pen.Ok())
- m_pen.ReleaseResource();
- if (m_brush.Ok())
- m_brush.ReleaseResource();
- if (m_backgroundBrush.Ok())
- m_backgroundBrush.ReleaseResource();
-*/
m_brush = wxNullBrush ;
m_pen = wxNullPen;
m_clipX2 = (int)(cx + cw);
m_clipY2 = (int)(cy + ch);
- BeginDrawing();
-
DoClipping((WXHDC) m_hDC);
-
- EndDrawing();
}
void wxDC::DoClipping(WXHDC dc)
{
IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1),
XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2));
-#if 0
- int x_off = 0;
- int y_off = 0;
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition(0, 0, &x_off, &y_off);
- }
-// HRGN rgn = CreateRectRgn(XLOG2DEV(m_clipX1 + x_off), YLOG2DEV(m_clipY1 + y_off),
-// XLOG2DEV(m_clipX2 + x_off), YLOG2DEV(m_clipY2 + y_off));
-
-// SelectClipRgn(dc, rgn);
-// DeleteObject(rgn);
- IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1 + x_off), YLOG2DEV(m_clipY1 + y_off),
- XLOG2DEV(m_clipX2 + x_off), YLOG2DEV(m_clipY2 + y_off));
-#endif
}
}
void wxDC::DestroyClippingRegion(void)
{
- BeginDrawing();
-
if (m_clipping && m_hDC)
{
-// SelectClipRgn(dc, NULL);
HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::DestroyClippingRegion: Selecting HRGN %X\n", rgn);
#endif
SelectClipRgn((HDC) m_hDC, rgn);
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::DestroyClippingRegion: Deleting HRGN %X\n", rgn);
#endif
DeleteObject(rgn);
}
m_clipping = FALSE;
-
- EndDrawing();
}
bool wxDC::CanDrawBitmap(void) const
void wxDC::SetPalette(const wxPalette& palette)
{
- BeginDrawing();
+ // Set the old object temporarily, in case the assignment deletes an object
+ // that's not yet selected out.
+ if (m_oldPalette)
+ {
+ ::SelectPalette((HDC) m_hDC, (HPALETTE) m_oldPalette, TRUE);
+ m_oldPalette = 0;
+ }
m_palette = m_palette;
if (m_oldPalette)
{
::SelectPalette((HDC) m_hDC, (HPALETTE) m_oldPalette, TRUE);
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SetPalette: set old palette %X\n", m_oldPalette);
#endif
m_oldPalette = 0;
if (!m_oldPalette)
m_oldPalette = (WXHPALETTE) oldPal;
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SetPalette %X: selected palette %X\n", this, m_palette.GetHPALETTE());
if (oldPal)
wxDebugMsg("wxDC::SetPalette: oldPal was palette %X\n", oldPal);
#endif
::RealizePalette((HDC) m_hDC);
}
-
- EndDrawing();
}
void wxDC::Clear(void)
{
- BeginDrawing();
-
RECT rect;
if (m_canvas)
GetClientRect((HWND) m_canvas->GetHWND(), &rect);
::SetWindowExtEx((HDC) m_hDC, m_windowExtX, m_windowExtY, NULL);
::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
-
- EndDrawing();
}
-void wxDC::FloodFill(long x, long y, wxColour *col, int style)
+void wxDC::FloodFill(long x, long y, const wxColour& col, int style)
{
-// int xx = (int)x;
-// int yy = (int)y;
-
- if (m_brush.Ok() && m_autoSetting)
- SetBrush(m_brush);
-
-// if (m_canvas)
-// m_canvas->CalcScrolledPosition((int)x, (int)y, &xx, &yy);
-
- BeginDrawing();
-
(void)ExtFloodFill((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
- col->GetPixel(),
+ col.GetPixel(),
style==wxFLOOD_SURFACE?
FLOODFILLSURFACE:FLOODFILLBORDER
);
- EndDrawing();
-
CalcBoundingBox(x, y);
}
// returns TRUE for pixels in the color of the current pen
// and FALSE for all other pixels colors
// if col is non-NULL return the color of the pixel
-/*
- int xx1 = (int)x;
- int yy1 = (int)y;
- if (m_canvas)
- m_canvas->CalcScrolledPosition((int)x, (int)y, &xx1, &yy1);
-*/
// get the color of the pixel
COLORREF pixelcolor = ::GetPixel((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y));
void wxDC::CrossHair(long x, long y)
{
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen);
-
// We suppose that our screen is 2000x2000 max.
long x1 = x-2000;
long y1 = y-2000;
long x2 = x+2000;
long y2 = y+2000;
-/*
- long xx1 = x1 ;
- long yy1 = y1 ;
- long xx2 = x2 ;
- long yy2 = y2 ;
- long xx = x ;
- long yy = y ;
-
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition(x1, y1, &xx1, &yy1);
- m_canvas->CalcScrolledPosition(x2, y2, &xx2, &yy2);
- m_canvas->CalcScrolledPosition(x, y, &xx, &yy);
- }
-*/
-
- BeginDrawing();
(void)MoveToEx((HDC) m_hDC, XLOG2DEV(x1), YLOG2DEV(y), NULL);
(void)LineTo((HDC) m_hDC, XLOG2DEV(x2), YLOG2DEV(y));
(void)MoveToEx((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y1), NULL);
(void)LineTo((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y2));
- EndDrawing();
-
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
}
void wxDC::DrawLine(long x1, long y1, long x2, long y2)
{
-// BUGBUG - is this necessary? YES YES YES YEs Yes yes ye....
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen);
-/*
- int xx1 = (int)x1;
- int yy1 = (int)y1;
- int xx2 = (int)x2;
- int yy2 = (int)y2;
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition((int)x1, (int)y1, &xx1, &yy1);
- m_canvas->CalcScrolledPosition((int)x2, (int)y2, &xx2, &yy2);
- }
-*/
-
- BeginDrawing();
-
(void)MoveToEx((HDC) m_hDC, XLOG2DEV(x1), YLOG2DEV(y1), NULL);
(void)LineTo((HDC) m_hDC, XLOG2DEV(x2), YLOG2DEV(y2));
(void)LineTo((HDC) m_hDC, XLOG2DEV(x2) + 1, YLOG2DEV(y2));
#endif
- EndDrawing();
-
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
}
-void wxDC::DrawArc(long x1,long y1,long x2,long y2,double xc,double yc)
+void wxDC::DrawArc(long x1,long y1,long x2,long y2, long xc, long yc)
{
-/*
- int xx1 = (int)x1;
- int yy1 = (int)y1;
- int xx2 = (int)x2;
- int yy2 = (int)y2;
- int xxc = (int)xc ;
- int yyc = (int)yc;
-*/
-
double dx = xc-x1 ;
double dy = yc-y1 ;
double radius = (double)sqrt(dx*dx+dy*dy) ;;
return ;
}
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
-/*
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition((int)x1, (int)y1, &xx1, &yy1);
- m_canvas->CalcScrolledPosition((int)x2, (int)y2, &xx2, &yy2);
- m_canvas->CalcScrolledPosition((int)xc, (int)yc, &xxc, &yyc);
- }
-*/
-
- BeginDrawing();
-
long xx1 = XLOG2DEV(x1) ;
long yy1 = YLOG2DEV(y1) ;
long xx2 = XLOG2DEV(x2) ;
long yyy2 = (long) (yyc+ray);
if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT)
{
-// BUGBUG - is this necessary?
- if (m_brush.GetStyle()!=wxTRANSPARENT&&m_autoSetting)
- SetBrush(m_brush) ;
- Pie((HDC) m_hDC,xxx1,yyy1,xxx2,yyy2,
+ // Have to add 1 to bottom-right corner of rectangle
+ // to make semi-circles look right (crooked line otherwise).
+ // Unfortunately this is not a reliable method, depends
+ // on the size of shape.
+ // TODO: figure out why this happens!
+ Pie((HDC) m_hDC,xxx1,yyy1,xxx2+1,yyy2+1,
xx1,yy1,xx2,yy2) ;
}
else
Arc((HDC) m_hDC,xxx1,yyy1,xxx2,yyy2,
xx1,yy1,xx2,yy2) ;
- EndDrawing();
-
CalcBoundingBox((xc-radius), (yc-radius));
CalcBoundingBox((xc+radius), (yc+radius));
}
-void wxDC::DrawEllipticArc(long WXUNUSED(x),long WXUNUSED(y),long WXUNUSED(w),long WXUNUSED(h),double WXUNUSED(sa),double WXUNUSED(ea))
-{
- // Not implemented
-}
-
void wxDC::DrawPoint(long x, long y)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
-/*
- int xx1 = (int)x;
- int yy1 = (int)y;
- if (m_canvas)
- m_canvas->CalcScrolledPosition((int)x, (int)y, &xx1, &yy1);
-*/
-
- BeginDrawing();
-
COLORREF color = 0x00ffffff;
if (m_pen.Ok())
{
-// m_pen.RealizeResource();
color = m_pen.GetColour().GetPixel() ;
}
-/*
- color = RGB(m_pen->GetColour().Red(),
- m_pen->GetColour().Green(),
- m_pen->GetColour().Blue());
-*/
-
SetPixel((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), color);
- EndDrawing();
-
CalcBoundingBox(x, y);
}
void wxDC::DrawPolygon(int n, wxPoint points[], long xoffset, long yoffset,int fillStyle)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-/*
- int xoffset1 = 0;
- int yoffset1 = 0;
-
- if (m_canvas)
- m_canvas->CalcScrolledPosition(0, 0, &xoffset1, &yoffset1);
-
- xoffset1 += (int)xoffset; yoffset1 += (int)yoffset;
-*/
-
- BeginDrawing();
-
- POINT *cpoints = new POINT[n];
- int i;
- for (i = 0; i < n; i++)
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
{
- cpoints[i].x = (int)(XLOG2DEV(points[i].x));
- cpoints[i].y = (int)(YLOG2DEV(points[i].y));
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
- CalcBoundingBox(points[i].x, points[i].y);
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+ int prev = SetPolyFillMode((HDC) m_hDC,fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING) ;
+ (void)Polygon((HDC) m_hDC, cpoints, n);
+ SetPolyFillMode((HDC) m_hDC,prev) ;
+ delete[] cpoints;
}
+ else
+ {
+ int i;
+ for (i = 0; i < n; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
- int prev = SetPolyFillMode((HDC) m_hDC,fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING) ;
- (void)Polygon((HDC) m_hDC, cpoints, n);
- SetPolyFillMode((HDC) m_hDC,prev) ;
-
- EndDrawing();
-
- delete[] cpoints;
+ int prev = SetPolyFillMode((HDC) m_hDC,fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING) ;
+ (void)Polygon((HDC) m_hDC, (POINT*) points, n);
+ SetPolyFillMode((HDC) m_hDC,prev) ;
+ }
}
void wxDC::DrawLines(int n, wxPoint points[], long xoffset, long yoffset)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
-/*
- int xoffset1 = 0;
- int yoffset1 = 0;
-
- if (m_canvas)
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
{
- m_canvas->CalcScrolledPosition(0, 0, &xoffset1, &yoffset1);
- }
- xoffset1 += (int)xoffset; yoffset1 += (int)yoffset;
-*/
-
- BeginDrawing();
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
- POINT *cpoints = new POINT[n];
- int i;
- for (i = 0; i < n; i++)
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+ (void)Polyline((HDC) m_hDC, cpoints, n);
+ delete[] cpoints;
+ }
+ else
{
- cpoints[i].x = (int)(XLOG2DEV(points[i].x));
- cpoints[i].y = (int)(YLOG2DEV(points[i].y));
+ int i;
+ for (i = 0; i < n; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
- CalcBoundingBox(points[i].x, points[i].y);
+ (void)Polyline((HDC) m_hDC, (POINT*) points, n);
}
-
- (void)Polyline((HDC) m_hDC, cpoints, n);
-
- EndDrawing();
-
- delete[] cpoints;
}
void wxDC::DrawRectangle(long x, long y, long width, long height)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
-/*
- int x1 = (int)x;
- int y1 = (int)y;
- int x2 = (int)(x+width);
- int y2 = (int)(y+height);
-
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition((int)x, (int)y, &x1, &y1);
- m_canvas->CalcScrolledPosition((int)(x+width), (int)(y+height), &x2, &y2);
- }
-*/
long x2 = x + width;
long y2 = y + height;
- BeginDrawing();
-
/* MATTHEW: [6] new normalization */
#if WX_STANDARD_GRAPHICS
bool do_brush, do_pen;
HPEN orig_pen = NULL;
if (do_pen || !m_pen.Ok())
- orig_pen = ::SelectObject((HDC) m_hDC, ::GetStockObject(NULL_PEN));
+ orig_pen = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN) ::GetStockObject(NULL_PEN));
(void)Rectangle((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1);
HBRUSH orig_brush = NULL;
if (do_brush || !m_brush.Ok())
- orig_brush = ::SelectObject((HDC) m_hDC, ::GetStockObject(NULL_BRUSH));
+ orig_brush = (HBRUSH) ::SelectObject((HDC) m_hDC, (HBRUSH) ::GetStockObject(NULL_BRUSH));
(void)Rectangle((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
XLOG2DEV(x2), YLOG2DEV(y2));
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- EndDrawing();
}
void wxDC::DrawRoundedRectangle(long x, long y, long width, long height, double radius)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
// Now, a negative radius value is interpreted to mean
// 'the proportion of the smallest X or Y dimension'
radius = (- radius * smallest);
}
-/*
- int x1 = (int)x;
- int y1 = (int)y;
-
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition((int)x, (int)y, &x1, &y1);
- m_canvas->CalcScrolledPosition((int)(x+width), (int)(y+height), &x2, &y2);
- }
-*/
-
long x2 = (x+width);
long y2 = (y+height);
- BeginDrawing();
-
(void)RoundRect((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
YLOG2DEV(y2), 2*XLOG2DEV(radius), 2*YLOG2DEV(radius));
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
-
- EndDrawing();
}
void wxDC::DrawEllipse(long x, long y, long width, long height)
{
-// BUGBUG - is this necessary?
- if (m_pen.Ok() && m_autoSetting)
- SetPen(m_pen) ;
-
-/*
- int x1 = (int)x;
- int y1 = (int)y;
-
- if (m_canvas)
- {
- m_canvas->CalcScrolledPosition((int)x, (int)y, &x1, &y1);
- m_canvas->CalcScrolledPosition((int)(x+width), (int)(y+height), &x2, &y2);
- }
-*/
-
long x2 = (x+width);
long y2 = (y+height);
- BeginDrawing();
-
(void)Ellipse((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
- EndDrawing();
-
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
}
-void wxDC::DrawIcon(const wxIcon& icon, long x, long y)
+// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
+void wxDC::DrawEllipticArc(long x,long y,long w,long h,double sa,double ea)
{
-/*
- int x1 = (int)x;
- int y1 = (int)y;
+ long x2 = (x+w);
+ long y2 = (y+h);
- if (m_canvas)
- m_canvas->CalcScrolledPosition(int)x, (int)y, &x1, &y1);
-*/
+ const double deg2rad = 3.14159265359 / 180.0;
+ int rx1 = XLOG2DEV(x+w/2);
+ int ry1 = YLOG2DEV(y+h/2);
+ int rx2 = rx1;
+ int ry2 = ry1;
+ rx1 += (int)(100.0 * abs(w) * cos(sa * deg2rad));
+ ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa * deg2rad));
+ rx2 += (int)(100.0 * abs(w) * cos(ea * deg2rad));
+ ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea * deg2rad));
+
+ // draw pie with NULL_PEN first and then outline otherwise a line is
+ // drawn from the start and end points to the centre
+ HPEN orig_pen = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN) ::GetStockObject(NULL_PEN));
+ if (m_signY > 0)
+ {
+ (void)Pie((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
+ rx1, ry1, rx2, ry2);
+ }
+ else
+ {
+ (void)Pie((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
+ rx1, ry1-1, rx2, ry2-1);
+ }
+ ::SelectObject((HDC) m_hDC, orig_pen);
+ (void)Arc((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
+ rx1, ry1, rx2, ry2);
- BeginDrawing();
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
+}
+void wxDC::DrawIcon(const wxIcon& icon, long x, long y)
+{
::DrawIcon((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON());
CalcBoundingBox(x, y);
CalcBoundingBox(x+icon.GetWidth(), y+icon.GetHeight());
-
- EndDrawing();
}
void wxDC::SetFont(const wxFont& the_font)
{
- // Release the current font from servitude (decrements the usage count)
-// if (m_font.Ok())
-// m_font.ReleaseResource();
-
- BeginDrawing();
+ // Set the old object temporarily, in case the assignment deletes an object
+ // that's not yet selected out.
+ if (m_oldFont)
+ {
+ ::SelectObject((HDC) m_hDC, (HFONT) m_oldFont);
+ m_oldFont = 0;
+ }
m_font = the_font;
if (m_font.Ok() && m_font.GetResourceHandle())
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::SetFont: Selecting HFONT %X\n", m_font.GetResourceHandle());
#endif
HFONT f = (HFONT) ::SelectObject((HDC) m_hDC, (HFONT) m_font.GetResourceHandle());
+ if (f == NULL)
+ {
+ wxDebugMsg("::SelectObject failed in wxDC::SetFont.");
+ }
if (!m_oldFont)
m_oldFont = (WXHFONT) f;
}
- EndDrawing();
}
void wxDC::SetPen(const wxPen& pen)
{
- BeginDrawing();
-
-// if (m_pen.Ok())
-// m_pen.ReleaseResource();
+ // Set the old object temporarily, in case the assignment deletes an object
+ // that's not yet selected out.
+ if (m_oldPen)
+ {
+ ::SelectObject((HDC) m_hDC, (HPEN) m_oldPen);
+ m_oldPen = 0;
+ }
m_pen = pen;
if (m_pen.Ok())
{
-// m_pen.UseResource();
-// m_pen.RealizeResource();
if (m_pen.GetResourceHandle())
{
HPEN p = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN)m_pen.GetResourceHandle()) ;
m_oldPen = (WXHPEN) p;
}
}
-
- EndDrawing();
}
void wxDC::SetBrush(const wxBrush& brush)
{
- BeginDrawing();
-
-// if (m_brush.Ok())
-// m_brush.ReleaseResource();
+ // Set the old object temporarily, in case the assignment deletes an object
+ // that's not yet selected out.
+ if (m_oldBrush)
+ {
+ ::SelectObject((HDC) m_hDC, (HBRUSH) m_oldBrush);
+ m_oldBrush = 0;
+ }
m_brush = brush;
if (m_brush.Ok())
{
-// m_brush.UseResource();
-// m_brush.RealizeResource();
-
if (m_brush.GetResourceHandle())
{
HBRUSH b = 0;
- b = ::SelectObject((HDC) m_hDC, (HBRUSH)m_brush.GetResourceHandle()) ;
+ b = (HBRUSH) ::SelectObject((HDC) m_hDC, (HBRUSH)m_brush.GetResourceHandle()) ;
if (!m_oldBrush)
m_oldBrush = (WXHBRUSH) b;
}
}
- EndDrawing();
}
void wxDC::DrawText(const wxString& text, long x, long y, bool use16bit)
{
-/*
- int xx1 = (int)x;
- int yy1 = (int)y;
-
- if (m_canvas)
- m_canvas->CalcScrolledPosition((int)x, (int)y, &xx1, &yy1);
-*/
-
- BeginDrawing();
-
+ // Should be unnecessary: SetFont should have done this already.
+#if 0
if (m_font.Ok() && m_font.GetResourceHandle())
{
-#if DEBUG > 1
+#if WXDEBUG > 1
wxDebugMsg("wxDC::DrawText: Selecting HFONT %X\n", m_font.GetResourceHandle());
#endif
- HFONT f = ::SelectObject((HDC) m_hDC, (HFONT) m_font.GetResourceHandle());
+ HFONT f = (HFONT) ::SelectObject((HDC) m_hDC, (HFONT) m_font.GetResourceHandle());
if (!m_oldFont)
m_oldFont = (WXHFONT) f;
}
+#endif
if (m_textForegroundColour.Ok())
SetTextColor((HDC) m_hDC, m_textForegroundColour.GetPixel() ) ;
long w, h;
GetTextExtent(text, &w, &h);
CalcBoundingBox((x + w), (y + h));
-
- EndDrawing();
}
void wxDC::SetBackground(const wxBrush& brush)
{
-// if (m_backgroundBrush.Ok())
-// m_backgroundBrush.ReleaseResource();
-
m_backgroundBrush = brush;
if (!m_backgroundBrush.Ok())
return;
-// m_backgroundBrush.UseResource();
-// m_backgroundBrush.RealizeResource() ;
-
if (m_canvas)
{
bool customColours = TRUE;
if (customColours)
{
-// HBRUSH br = (m_backgroundBrush.GetStyle()==wxTRANSPARENT) ?
-// GetStockObject(NULL_BRUSH) : (HBRUSH) m_backgroundBrush.GetResourceHandle();
if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
{
m_canvas->m_backgroundTransparent = TRUE;
}
}
}
- BeginDrawing();
-
COLORREF new_color = m_backgroundBrush.GetColour().GetPixel() ;
{
(void)SetBkColor((HDC) m_hDC, new_color);
}
-
- EndDrawing();
}
void wxDC::SetBackgroundMode(int mode)
{
m_backgroundMode = mode;
- BeginDrawing();
-
if (m_backgroundMode == wxTRANSPARENT)
::SetBkMode((HDC) m_hDC, TRANSPARENT);
else
::SetBkMode((HDC) m_hDC, OPAQUE);
-
- EndDrawing();
}
void wxDC::SetLogicalFunction(int function)
{
m_logicalFunction = function;
- BeginDrawing();
-
SetRop((WXHDC) m_hDC);
-
- EndDrawing();
}
void wxDC::SetRop(WXHDC dc)
if (!this->IsKindOf(CLASSINFO(wxPrinterDC)))
return TRUE;
- bool flag = FALSE;
-
DOCINFO docinfo;
docinfo.cbSize = sizeof(DOCINFO);
docinfo.lpszDocName = (const char *)message;
- docinfo.lpszOutput = (const char *)m_filename;
+
+ if (m_filename.IsEmpty())
+ docinfo.lpszOutput = NULL;
+ else
+ docinfo.lpszOutput = (const char *)m_filename;
+
#if defined(__WIN95__)
docinfo.lpszDatatype = NULL;
docinfo.fwType = 0;
#endif
- if (m_hDC) flag = (SP_ERROR !=
+ if (!m_hDC)
+ return FALSE;
+
+ int ret =
#ifndef __WIN32__
- ::StartDoc((HDC) m_hDC, &docinfo));
+ ::StartDoc((HDC) m_hDC, &docinfo);
#else
#ifdef UNICODE
- ::StartDocW((HDC) m_hDC, &docinfo));
+ ::StartDocW((HDC) m_hDC, &docinfo);
#else
- ::StartDocA((HDC) m_hDC, &docinfo));
+ ::StartDocA((HDC) m_hDC, &docinfo);
#endif
#endif
- else flag = FALSE;
-
- return flag;
+ if (ret <= 0)
+ {
+ DWORD lastError = GetLastError();
+ wxDebugMsg("wxDC::StartDoc failed with error: %d\n", lastError);
+ }
+ return (ret > 0);
}
void wxDC::EndDoc(void)
GetTextExtentPoint((HDC) m_hDC, (char *)(const char *) string, strlen((char *)(const char *) string), &sizeRect);
GetTextMetrics((HDC) m_hDC, &tm);
- *x = XDEV2LOGREL(sizeRect.cx);
- *y = YDEV2LOGREL(sizeRect.cy);
+ if (x) *x = XDEV2LOGREL(sizeRect.cx);
+ if (y) *y = YDEV2LOGREL(sizeRect.cy);
if (descent) *descent = tm.tmDescent;
if (externalLeading) *externalLeading = tm.tmExternalLeading;
}
int mm_width = 0;
int mm_height = 0;
- BeginDrawing();
-
pixel_width = GetDeviceCaps((HDC) m_hDC, HORZRES);
pixel_height = GetDeviceCaps((HDC) m_hDC, VERTRES);
mm_width = GetDeviceCaps((HDC) m_hDC, HORZSIZE);
if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0))
{
-// if (!m_hDC && m_canvas)
-// m_canvas->ReleaseHDC() ;
return;
}
::SetWindowExtEx((HDC) m_hDC, m_windowExtX, m_windowExtY, NULL);
::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
-
- EndDrawing();
}
void wxDC::SetUserScale(double x, double y)
SetMapMode(m_mappingMode);
}
+void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
+{
+ m_signX = xLeftRight ? 1 : -1;
+ m_signY = yBottomUp ? -1 : 1;
+
+ SetMapMode(m_mappingMode);
+}
+
void wxDC::SetSystemScale(double x, double y)
{
m_systemScaleX = x;
m_logicalOriginX = x;
m_logicalOriginY = y;
- BeginDrawing();
-
::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
-
- EndDrawing();
}
void wxDC::SetDeviceOrigin(long x, long y)
m_deviceOriginX = x;
m_deviceOriginY = y;
- BeginDrawing();
-
::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
-
- EndDrawing();
}
long wxDC::DeviceToLogicalX(long x) const
{
- return (long) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_systemScaleX) - m_logicalOriginX) ;
+ return (long) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX) - m_logicalOriginX) ;
}
long wxDC::DeviceToLogicalXRel(long x) const
{
- return (long) ((x)/(m_logicalScaleX*m_userScaleX*m_systemScaleX)) ;
+ return (long) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX)) ;
}
long wxDC::DeviceToLogicalY(long y) const
{
- return (long) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_systemScaleY) - m_logicalOriginY) ;
+ return (long) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY) - m_logicalOriginY) ;
}
long wxDC::DeviceToLogicalYRel(long y) const
{
- return (long) ((y)/(m_logicalScaleY*m_userScaleY*m_systemScaleY)) ;
+ return (long) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY)) ;
}
long wxDC::LogicalToDeviceX(long x) const
{
- return (long) (floor((x) - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_systemScaleX + m_deviceOriginX) ;
+ return (long) (floor((x) - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX + m_deviceOriginX) ;
}
long wxDC::LogicalToDeviceXRel(long x) const
{
- return (long) (floor(x)*m_logicalScaleX*m_userScaleX*m_systemScaleX) ;
+ return (long) (floor(x)*m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX) ;
}
long wxDC::LogicalToDeviceY(long y) const
{
- return (long) (floor((y) - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_systemScaleY + m_deviceOriginY);
+ return (long) (floor((y) - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY + m_deviceOriginY);
}
long wxDC::LogicalToDeviceYRel(long y) const
{
- return (long) (floor(y)*m_logicalScaleY*m_userScaleY*m_systemScaleY) ;
+ return (long) (floor(y)*m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY) ;
}
// This group of functions may not do any conversion
bool wxDC::Blit(long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int rop, bool useMask)
{
- BeginDrawing();
- source->BeginDrawing();
-
long xdest1 = xdest;
long ydest1 = ydest;
long xsrc1 = xsrc;
long ysrc1 = ysrc;
+ // Chris Breeze 18/5/98: use text foreground/background colours
+ // when blitting from 1-bit bitmaps
+ COLORREF old_textground = ::GetTextColor((HDC)m_hDC);
+ COLORREF old_background = ::GetBkColor((HDC)m_hDC);
+ if (m_textForegroundColour.Ok())
+ {
+ ::SetTextColor((HDC) m_hDC, m_textForegroundColour.GetPixel() ) ;
+ }
+ if (m_textBackgroundColour.Ok())
+ {
+ ::SetBkColor((HDC) m_hDC, m_textBackgroundColour.GetPixel() ) ;
+ }
+
DWORD dwRop = rop == wxCOPY ? SRCCOPY :
rop == wxCLEAR ? WHITENESS :
rop == wxSET ? BLACKNESS :
::SelectObject(dc_mask, 0);
::DeleteDC(dc_mask);
#endif
- // New code from Chris Breeze, 8/5/98
-
- // create a temp buffer bitmap and DCs to access it and the mask
- HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
- HDC dc_buffer = ::CreateCompatibleDC((HDC) m_hDC);
- HBITMAP buffer_bmap = ::CreateCompatibleBitmap((HDC) m_hDC, width, height);
- ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
- ::SelectObject(dc_buffer, buffer_bmap);
-
- // copy dest to buffer
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- (HDC) m_hDC, xdest1, ydest1, SRCCOPY);
-
- // copy src to buffer using selected raster op
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
-
- // set masked area in buffer to BLACK (pixel value 0)
- COLORREF prevBkCol = ::SetBkColor((HDC) m_hDC, RGB(255, 255, 255));
- COLORREF prevCol = ::SetTextColor((HDC) m_hDC, RGB(0, 0, 0));
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- dc_mask, xsrc1, ysrc1, SRCAND);
-
- // set unmasked area in dest to BLACK
- ::SetBkColor((HDC) m_hDC, RGB(0, 0, 0));
- ::SetTextColor((HDC) m_hDC, RGB(255, 255, 255));
- ::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- dc_mask, xsrc1, ysrc1, SRCAND);
- ::SetBkColor((HDC) m_hDC, prevBkCol); // restore colours to original values
- ::SetTextColor((HDC) m_hDC, prevCol);
-
- // OR buffer to dest
- success = (::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- dc_buffer, 0, 0, SRCPAINT) != 0);
-
- // tidy up temporary DCs and bitmap
- ::SelectObject(dc_mask, 0);
- ::DeleteDC(dc_mask);
- ::SelectObject(dc_buffer, 0);
- ::DeleteDC(dc_buffer);
- ::DeleteObject(buffer_bmap);
- }
+ // New code from Chris Breeze, 15/7/98
+ // Blit bitmap with mask
+
+ if (IsKindOf(CLASSINFO(wxPrinterDC)))
+ {
+ // If we are printing source colours are screen colours
+ // not printer colours and so we need copy the bitmap
+ // pixel by pixel.
+ RECT rect;
+ HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
+ HDC dc_src = (HDC) source->m_hDC;
+
+ ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
+ for (int x = 0; x < width; x++)
+ {
+ for (int y = 0; y < height; y++)
+ {
+ COLORREF cref = ::GetPixel(dc_mask, x, y);
+ if (cref)
+ {
+ HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
+ rect.left = xdest1 + x; rect.right = rect.left + 1;
+ rect.top = ydest1 + y; rect.bottom = rect.top + 1;
+ ::FillRect((HDC) m_hDC, &rect, brush);
+ ::DeleteObject(brush);
+ }
+ }
+ }
+ ::SelectObject(dc_mask, 0);
+ ::DeleteDC(dc_mask);
+ }
+ else
+ {
+ // create a temp buffer bitmap and DCs to access it and the mask
+ HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
+ HDC dc_buffer = ::CreateCompatibleDC((HDC) m_hDC);
+ HBITMAP buffer_bmap = ::CreateCompatibleBitmap((HDC) m_hDC, width, height);
+ ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
+ ::SelectObject(dc_buffer, buffer_bmap);
+
+ // copy dest to buffer
+ ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ (HDC) m_hDC, xdest1, ydest1, SRCCOPY);
+
+ // copy src to buffer using selected raster op
+ ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
+
+ // set masked area in buffer to BLACK (pixel value 0)
+ COLORREF prevBkCol = ::SetBkColor((HDC) m_hDC, RGB(255, 255, 255));
+ COLORREF prevCol = ::SetTextColor((HDC) m_hDC, RGB(0, 0, 0));
+ ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ dc_mask, xsrc1, ysrc1, SRCAND);
+
+ // set unmasked area in dest to BLACK
+ ::SetBkColor((HDC) m_hDC, RGB(0, 0, 0));
+ ::SetTextColor((HDC) m_hDC, RGB(255, 255, 255));
+ ::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
+ dc_mask, xsrc1, ysrc1, SRCAND);
+ ::SetBkColor((HDC) m_hDC, prevBkCol); // restore colours to original values
+ ::SetTextColor((HDC) m_hDC, prevCol);
+
+ // OR buffer to dest
+ success = (::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
+ dc_buffer, 0, 0, SRCPAINT) != 0);
+
+ // tidy up temporary DCs and bitmap
+ ::SelectObject(dc_mask, 0);
+ ::DeleteDC(dc_mask);
+ ::SelectObject(dc_buffer, 0);
+ ::DeleteDC(dc_buffer);
+ ::DeleteObject(buffer_bmap);
+ }
+ }
}
else
{
+ if (IsKindOf(CLASSINFO(wxPrinterDC)))
+ {
+ // If we are printing source colours are screen colours
+ // not printer colours and so we need copy the bitmap
+ // pixel by pixel.
+ HDC dc_src = (HDC) source->m_hDC;
+ RECT rect;
+ for (int x = 0; x < width; x++)
+ {
+ for (int y = 0; y < height; y++)
+ {
+ HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
+ rect.left = xdest1 + x; rect.right = rect.left + 1;
+ rect.top = ydest1 + y; rect.bottom = rect.top + 1;
+ ::FillRect((HDC) m_hDC, &rect, brush);
+ ::DeleteObject(brush);
+ }
+ }
+ }
+ else
+ {
success = (BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
xsrc1, ysrc1, dwRop) != 0);
+ }
}
- source->EndDrawing();
- EndDrawing();
+ ::SetTextColor((HDC)m_hDC, old_textground);
+ ::SetBkColor((HDC)m_hDC, old_background);
return success;
}
*height = h;
}
-/*
-#if USE_SPLINES
-# if USE_XFIG_SPLINE_CODE
-# include "../common/xfspline.inc"
-# else
-# include "../common/wxspline.inc"
-# endif
-#endif // USE_SPLINES
-*/
-
-#if USE_SPLINES
-#include "xfspline.inc"
-#endif // USE_SPLINES
-
void wxDC::DrawPolygon(wxList *list, long xoffset, long yoffset,int fillStyle)
{
int n = list->Number();
m_textBackgroundColour = colour;
}
-#if USE_SPLINES
-// Make a 3-point spline
-void wxDC::DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3)
-{
- wxList *point_list = new wxList;
-
- wxPoint *point1 = new wxPoint;
- point1->x = x1; point1->y = y1;
- point_list->Append((wxObject*)point1);
-
- wxPoint *point2 = new wxPoint;
- point2->x = x2; point2->y = y2;
- point_list->Append((wxObject*)point2);
-
- wxPoint *point3 = new wxPoint;
- point3->x = x3; point3->y = y3;
- point_list->Append((wxObject*)point3);
-
- DrawSpline(point_list);
-
- for(wxNode *node = point_list->First(); node; node = node->Next()) {
- wxPoint *p = (wxPoint *)node->Data();
- delete p;
- }
- delete point_list;
-/*
- wxSpline spline(point_list);
-
- wx_draw_open_spline(this, &spline);
- spline.DeletePoints();
- */
-}
-#endif
-
// For use by wxWindows only, unless custom units are required.
void wxDC::SetLogicalScale(double x, double y)
{
}
#endif
+int wxDC::GetDepth(void) const
+{
+ return (int) ::GetDeviceCaps((HDC) m_hDC,BITSPIXEL);
+}
+
+#if wxUSE_SPLINES
+
+// Make a 3-point spline
+void wxDC::DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3)
+{
+ wxList *point_list = new wxList;
+
+ wxPoint *point1 = new wxPoint;
+ point1->x = x1; point1->y = y1;
+ point_list->Append((wxObject*)point1);
+
+ wxPoint *point2 = new wxPoint;
+ point2->x = x2; point2->y = y2;
+ point_list->Append((wxObject*)point2);
+
+ wxPoint *point3 = new wxPoint;
+ point3->x = x3; point3->y = y3;
+ point_list->Append((wxObject*)point3);
+
+ DrawSpline(point_list);
+
+ for(wxNode *node = point_list->First(); node; node = node->Next()) {
+ wxPoint *p = (wxPoint *)node->Data();
+ delete p;
+ }
+ delete point_list;
+}
+
+////#define wx_round(a) (int)((a)+.5)
+//#define wx_round(a) (a)
+
+class wxSpline: public wxObject
+{
+ public:
+ int type;
+ wxList *points;
+
+ wxSpline(wxList *list);
+ void DeletePoints(void);
+
+ // Doesn't delete points
+ ~wxSpline(void);
+};
+
+void wxDC::DrawSpline(int n, wxPoint points[])
+{
+ wxList list;
+ int i;
+ for (i =0; i < n; i++)
+ list.Append((wxObject*)&points[i]);
+ DrawSpline((wxList *)&list);
+}
+
+void wx_draw_open_spline(wxDC *dc, wxSpline *spline);
+
+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);
+wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3);
+
+void wxDC::DrawSpline(wxList *list)
+{
+ wxSpline spline(list);
+
+ wx_draw_open_spline(this, &spline);
+}
+
+
+wxList wx_spline_point_list;
+
+void wx_draw_open_spline(wxDC *dc, wxSpline *spline)
+{
+ wxPoint *p;
+ double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
+ double x1, y1, x2, y2;
+
+ wxNode *node = spline->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)
+ {
+ 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;
+ }
+
+ wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1));
+ wx_spline_add_point(x2, y2);
+
+ wx_spline_draw_point_array(dc);
+
+}
+
+/********************* CURVES FOR SPLINES *****************************
+
+ The following spline drawing routine is from
+
+ "An Algorithm for High-Speed Curve Generation"
+ by George Merrill Chaikin,
+ Computer Graphics and Image Processing, 3, Academic Press,
+ 1974, 346-349.
+
+ and
+
+ "On Chaikin's Algorithm" by R. F. Riesenfeld,
+ Computer Graphics and Image Processing, 4, Academic Press,
+ 1975, 304-310.
+
+***********************************************************************/
+
+#define half(z1, z2) ((z1+z2)/2.0)
+#define THRESHOLD 5
+
+/* iterative version */
+
+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((double)wx_round(x1), (double)wx_round(y1));
+ wx_spline_add_point((double)wx_round(xmid), (double)wx_round(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);
+ }
+ }
+}
+
+
+/* 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)
+{
+ wx_stack_top = wx_spline_stack;
+ wx_stack_count = 0;
+}
+
+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++;
+}
+
+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);
+}
+
+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;
+}
+
+static void wx_spline_draw_point_array(wxDC *dc)
+{
+ dc->DrawLines(&wx_spline_point_list, (double)0.0, (double)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();
+ }
+}
+
+wxSpline::wxSpline(wxList *list)
+{
+ points = list;
+}
+
+wxSpline::~wxSpline(void)
+{
+}
+
+void wxSpline::DeletePoints(void)
+{
+ for(wxNode *node = points->First(); node; node = points->First())
+ {
+ wxPoint *point = (wxPoint *)node->Data();
+ delete point;
+ delete node;
+ }
+ delete points;
+}
+
+
+#endif // wxUSE_SPLINES
+
projects / wxWidgets.git / blobdiff