--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: dcclient.cpp
+// Purpose:
+// Author: Robert Roebling
+// Created: 01/02/97
+// RCS-ID: $Id$
+// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "dcclient.h"
+#endif
+
+#include "wx/dcclient.h"
+#include "wx/dcmemory.h"
+#include <math.h>
+
+//-----------------------------------------------------------------------------
+// local data
+//-----------------------------------------------------------------------------
+
+#include "bdiag.xbm"
+#include "fdiag.xbm"
+#include "cdiag.xbm"
+#include "horiz.xbm"
+#include "verti.xbm"
+#include "cross.xbm"
+#define num_hatches 6
+
+
+//-----------------------------------------------------------------------------
+// constants
+//-----------------------------------------------------------------------------
+
+#define RAD2DEG 57.2957795131
+
+//-----------------------------------------------------------------------------
+// wxPaintDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxDC)
+
+wxPaintDC::wxPaintDC(void)
+{
+};
+
+wxPaintDC::wxPaintDC( wxWindow *window )
+{
+};
+
+wxPaintDC::~wxPaintDC(void)
+{
+};
+
+void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1),
+ wxColour *WXUNUSED(col), int WXUNUSED(style) )
+{
+};
+
+bool wxPaintDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
+{
+ return FALSE;
+};
+
+void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 )
+{
+ if (!Ok()) return;
+
+};
+
+void wxPaintDC::CrossHair( long x, long y )
+{
+ if (!Ok()) return;
+
+};
+
+void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double 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) {};
+
+};
+
+void wxPaintDC::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) {};
+};
+
+void wxPaintDC::DrawPoint( long x, long y )
+{
+ if (!Ok()) return;
+
+ if (m_pen.GetStyle() != wxTRANSPARENT) {};
+};
+
+void wxPaintDC::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);
+ };
+};
+
+void wxPaintDC::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();
+ };
+};
+
+void wxPaintDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[],
+ long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
+{
+ if (!Ok()) return;
+};
+
+void wxPaintDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset),
+ long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
+{
+ if (!Ok()) return;
+};
+
+void wxPaintDC::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) {};
+};
+
+void wxPaintDC::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;
+ }
+
+ // CMB: draw nothing if transformed w or h is 0
+ if (ww == 0 || hh == 0) return;
+
+ // CMB: adjust size if outline is drawn otherwise the result is
+ // 1 pixel too wide and high
+ if (m_pen.GetStyle() != wxTRANSPARENT)
+ {
+ ww--;
+ hh--;
+ }
+
+ // 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;
+
+ if (m_brush.GetStyle() != wxTRANSPARENT)
+ {
+ };
+
+ if (m_pen.GetStyle() != wxTRANSPARENT)
+ {
+ };
+};
+
+void wxPaintDC::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) {};
+};
+
+bool wxPaintDC::CanDrawBitmap(void) const
+{
+ return TRUE;
+};
+
+void wxPaintDC::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);
+
+};
+
+bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
+ wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) )
+{
+ if (!Ok()) return FALSE;
+
+ // CMB 20/5/98: add blitting of bitmaps
+ if (source->IsKindOf(CLASSINFO(wxMemoryDC)))
+ {
+ 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;
+ }
+ */
+ }
+
+ return TRUE;
+};
+
+void wxPaintDC::DrawText( const wxString &text, long x, long y, bool
+WXUNUSED(use16) )
+{
+ if (!Ok()) return;
+
+};
+
+
+
+bool wxPaintDC::CanGetTextExtent(void) const
+{
+ return TRUE;
+};
+
+void wxPaintDC::GetTextExtent( const wxString &string, long *width, long *height,
+ long *WXUNUSED(descent), long *WXUNUSED(externalLeading),
+ wxFont *WXUNUSED(theFont), bool WXUNUSED(use16) )
+{
+ if (!Ok()) return;
+
+};
+
+long wxPaintDC::GetCharWidth(void)
+{
+ if (!Ok()) return 0;
+
+};
+
+long wxPaintDC::GetCharHeight(void)
+{
+ if (!Ok()) return 0;
+
+};
+
+void wxPaintDC::Clear(void)
+{
+ if (!Ok()) return;
+
+};
+
+void wxPaintDC::SetFont( const wxFont &font )
+{
+ if (!Ok()) return;
+
+ m_font = font;
+};
+
+void wxPaintDC::SetPen( const wxPen &pen )
+{
+ if (!Ok()) return;
+
+ if (m_pen == pen) return;
+
+ m_pen = pen;
+
+ if (!m_pen.Ok()) return;
+};
+
+void wxPaintDC::SetBrush( const wxBrush &brush )
+{
+ if (!Ok()) return;
+
+ if (m_brush == brush) return;
+
+ m_brush = brush;
+
+ if (!m_brush.Ok()) return;
+
+};
+
+void wxPaintDC::SetBackground( const wxBrush &brush )
+{
+ if (!Ok()) return;
+
+ if (m_backgroundBrush == brush) return;
+
+ m_backgroundBrush = brush;
+
+ if (!m_backgroundBrush.Ok()) return;
+
+};
+
+void wxPaintDC::SetLogicalFunction( int function )
+{
+ if (m_logicalFunction == function) return;
+};
+
+void wxPaintDC::SetTextForeground( const wxColour &col )
+{
+ if (!Ok()) return;
+
+ if (m_textForegroundColour == col) return;
+
+ m_textForegroundColour = col;
+ if (!m_textForegroundColour.Ok()) return;
+};
+
+void wxPaintDC::SetTextBackground( const wxColour &col )
+{
+ if (!Ok()) return;
+
+ if (m_textBackgroundColour == col) return;
+
+ m_textBackgroundColour = col;
+ if (!m_textBackgroundColour.Ok()) return;
+};
+
+void wxPaintDC::SetBackgroundMode( int mode )
+{
+ m_backgroundMode = mode;
+
+ if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
+ {
+ }
+};
+
+void wxPaintDC::SetPalette( const wxPalette& WXUNUSED(palette) )
+{
+};
+
+void wxPaintDC::SetClippingRegion( long x, long y, long width, long height )
+{
+ wxDC::SetClippingRegion( x, y, width, height );
+
+};
+
+void wxPaintDC::DestroyClippingRegion(void)
+{
+ wxDC::DestroyClippingRegion();
+
+};
+
+// ----------------------------------- 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;
+
+#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( 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);
+ }
+ }
+}
+
+/* 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, 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();
+ }
+}
+
+void wxPaintDC::DrawOpenSpline( wxList *points )
+{
+ 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)
+ {
+ 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( cx1, cy1 );
+ wx_spline_add_point( x2, y2 );
+
+ wx_spline_draw_point_array( this );
+};
projects / wxWidgets.git / blobdiff