Initial revision
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Karsten Ballüder
773
src/gtk1/dcclient.cpp
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773
src/gtk1/dcclient.cpp
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@@ -0,0 +1,773 @@
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/////////////////////////////////////////////////////////////////////////////
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// Name: dcclient.cpp
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// Purpose:
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// Author: Robert Roebling
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// Created: 01/02/97
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// Id:
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// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "dcclient.h"
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#endif
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#include "wx/dcclient.h"
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//-----------------------------------------------------------------------------
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// local data
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//-----------------------------------------------------------------------------
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#include "bdiag.xbm"
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#include "fdiag.xbm"
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#include "cdiag.xbm"
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#include "horiz.xbm"
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#include "verti.xbm"
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#include "cross.xbm"
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#define num_hatches 6
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static GdkPixmap *hatches[num_hatches];
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static GdkPixmap **hatch_bitmap = NULL;
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//-----------------------------------------------------------------------------
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// constants
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//-----------------------------------------------------------------------------
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#define RAD2DEG 57.2957795131
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//-----------------------------------------------------------------------------
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// wxPaintDC
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxDC)
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wxPaintDC::wxPaintDC(void)
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{
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};
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wxPaintDC::wxPaintDC( wxWindow *window )
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{
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if (!window) return;
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GtkWidget *widget = window->m_wxwindow;
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if (!widget) return;
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m_window = widget->window;
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if (!m_window) return;
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if (window->m_wxwindow)
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m_cmap = gtk_widget_get_colormap( window->m_wxwindow );
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else
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m_cmap = gtk_widget_get_colormap( window->m_widget );
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SetUpDC();
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long x = 0;
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long y = 0;
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window->GetDrawingOffset( &x, &y );
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SetInternalDeviceOrigin( -x, -y );
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};
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wxPaintDC::~wxPaintDC(void)
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{
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};
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void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1),
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wxColour *WXUNUSED(col), int WXUNUSED(style) )
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{
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};
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bool wxPaintDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
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{
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return FALSE;
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};
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void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 )
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{
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if (!Ok()) return;
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if (m_pen.GetStyle() != wxTRANSPARENT)
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{
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gdk_draw_line( m_window, m_penGC,
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XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
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};
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};
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void wxPaintDC::CrossHair( long x, long y )
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{
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if (!Ok()) return;
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if (m_pen.GetStyle() != wxTRANSPARENT)
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{
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int w = 0;
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int h = 0;
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GetSize( &w, &h );
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long xx = XLOG2DEV(x);
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long yy = YLOG2DEV(y);
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gdk_draw_line( m_window, m_penGC,
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0, yy, XLOG2DEVREL(w), yy );
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gdk_draw_line( m_window, m_penGC,
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xx, 0, xx, YLOG2DEVREL(h) );
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};
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};
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void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double yc )
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{
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if (!Ok()) return;
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long xx1 = XLOG2DEV(x1);
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long yy1 = YLOG2DEV(y1);
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long xx2 = XLOG2DEV(x2);
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long yy2 = YLOG2DEV(y2);
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long xxc = XLOG2DEV((long)xc);
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long yyc = YLOG2DEV((long)yc);
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double dx = xx1 - xxc;
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double dy = yy1 - yyc;
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double radius = sqrt(dx*dx+dy*dy);
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long r = (long)radius;
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double radius1, radius2;
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if (xx1 == xx2 && yy1 == yy2)
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{
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radius1 = 0.0;
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radius2 = 360.0;
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}
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else
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if (radius == 0.0)
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{
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radius1 = radius2 = 0.0;
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}
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else
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{
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radius1 = (xx1 - xxc == 0) ?
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(yy1 - yyc < 0) ? 90.0 : -90.0 :
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-atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
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radius2 = (xx2 - xxc == 0) ?
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(yy2 - yyc < 0) ? 90.0 : -90.0 :
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-atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
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};
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long alpha1 = long(radius1 * 64.0);
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long alpha2 = long((radius2 - radius1) * 64.0);
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while (alpha2 <= 0) alpha2 += 360*64;
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while (alpha1 > 360*64) alpha1 -= 360*64;
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if (m_brush.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
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if (m_pen.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
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};
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void wxPaintDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
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{
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if (!Ok()) return;
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if (width<0) { width=-width; x=x-width; }
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if (height<0) { height=-height; y=y-height; }
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long xx = XLOG2DEV(x);
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long yy = YLOG2DEV(y);
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long ww = XLOG2DEVREL(width);
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long hh = YLOG2DEVREL(height);
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if (m_brush.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww-1, hh-1, 0, long(sa*64) );
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if (m_pen.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, long(ea*64) );
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};
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void wxPaintDC::DrawPoint( long x, long y )
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{
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if (!Ok()) return;
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if (m_pen.GetStyle() != wxTRANSPARENT)
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gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
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};
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void wxPaintDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
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{
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if (!Ok()) return;
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if (m_pen.GetStyle() == wxTRANSPARENT) return;
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for (int i = 0; i < n-1; i++)
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{
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long x1 = XLOG2DEV(points[i].x + xoffset);
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long x2 = XLOG2DEV(points[i+1].x + xoffset);
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long y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste
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long y2 = YLOG2DEV(points[i+1].y + yoffset);
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gdk_draw_line( m_window, m_brushGC, x1, y1, x2, y2 );
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};
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};
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void wxPaintDC::DrawLines( wxList *points, long xoffset, long yoffset )
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{
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if (!Ok()) return;
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if (m_pen.GetStyle() == wxTRANSPARENT) return;
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wxNode *node = points->First();
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while (node->Next())
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{
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wxPoint *point = (wxPoint*)node->Data();
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wxPoint *npoint = (wxPoint*)node->Next()->Data();
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long x1 = XLOG2DEV(point->x + xoffset);
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long x2 = XLOG2DEV(npoint->x + xoffset);
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long y1 = YLOG2DEV(point->y + yoffset); // and again...
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long y2 = YLOG2DEV(npoint->y + yoffset);
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gdk_draw_line( m_window, m_brushGC, x1, y1, x2, y2 );
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node = node->Next();
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};
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};
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void wxPaintDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[],
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long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
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{
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if (!Ok()) return;
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};
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void wxPaintDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset),
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long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
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{
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if (!Ok()) return;
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};
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void wxPaintDC::DrawRectangle( long x, long y, long width, long height )
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{
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if (!Ok()) return;
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long xx = XLOG2DEV(x);
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long yy = YLOG2DEV(y);
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long ww = XLOG2DEVREL(width);
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long hh = YLOG2DEVREL(height);
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if (m_brush.GetStyle() != wxTRANSPARENT)
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gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
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if (m_pen.GetStyle() != wxTRANSPARENT)
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gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
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};
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void wxPaintDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius )
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{
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if (!Ok()) return;
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if (width<0) { width=-width; x=x-width; }
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if (height<0) { height=-height; y=y-height; }
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if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
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long xx = XLOG2DEV(x);
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long yy = YLOG2DEV(y);
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long ww = XLOG2DEVREL(width);
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long hh = YLOG2DEVREL(height);
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long rr = XLOG2DEVREL((long)radius);
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long dd = 2 * rr;
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if (m_brush.GetStyle() != wxTRANSPARENT)
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{
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gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd, hh );
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gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd );
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
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};
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if (m_pen.GetStyle() != wxTRANSPARENT)
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{
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gdk_draw_line( m_window, m_penGC, xx+rr, yy, xx+ww-rr, yy );
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gdk_draw_line( m_window, m_penGC, xx+rr, yy+hh, xx+ww-rr, yy+hh );
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gdk_draw_line( m_window, m_penGC, xx, yy+rr, xx, yy+hh-rr );
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gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr, xx+ww, yy+hh-rr );
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gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
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gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
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gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
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gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
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};
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};
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void wxPaintDC::DrawEllipse( long x, long y, long width, long height )
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{
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if (!Ok()) return;
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if (width<0) { width=-width; x=x-width; }
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if (height<0) { height=-height; y=y-height; }
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long xx = XLOG2DEV(x);
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long yy = YLOG2DEV(y);
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long ww = XLOG2DEVREL(width);
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long hh = YLOG2DEVREL(height);
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if (m_brush.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
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if (m_pen.GetStyle() != wxTRANSPARENT)
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gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
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};
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bool wxPaintDC::CanDrawBitmap(void) const
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{
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return TRUE;
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};
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void wxPaintDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
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{
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if (!Ok()) return;
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if (!icon.Ok()) return;
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int xx = XLOG2DEV(x);
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int yy = YLOG2DEV(y);
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GdkBitmap *mask = NULL;
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if (icon.GetMask()) mask = icon.GetMask()->GetBitmap();
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if (useMask && mask)
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{
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gdk_gc_set_clip_mask( m_penGC, mask );
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gdk_gc_set_clip_origin( m_penGC, xx, yy );
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};
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GdkPixmap *pm = icon.GetPixmap();
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gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
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if (useMask && mask)
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{
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gdk_gc_set_clip_mask( m_penGC, NULL );
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gdk_gc_set_clip_origin( m_penGC, 0, 0 );
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};
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};
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bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
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wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) )
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{
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if (!Ok()) return FALSE;
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wxClientDC *csrc = (wxClientDC*)source;
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gdk_window_copy_area ( m_window, m_penGC,
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XLOG2DEV(xdest), YLOG2DEV(ydest),
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csrc->GetWindow(),
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source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc),
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source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) );
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/*
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gdk_window_copy_area ( m_window, m_penGC,
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XLOG2DEV(xdest), YLOG2DEV(ydest),
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csrc->GetWindow(),
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||||
xsrc, ysrc,
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width, height );
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*/
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||||
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return TRUE;
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||||
};
|
||||
|
||||
void wxPaintDC::DrawText( const wxString &text, long x, long y, bool WXUNUSED(use16) )
|
||||
{
|
||||
if (!Ok()) return;
|
||||
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||||
GdkFont *font = m_font.GetInternalFont( m_scaleY );
|
||||
gdk_draw_string( m_window, font, m_textGC,
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XLOG2DEV(x),
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YLOG2DEV(y) + font->ascent, text );
|
||||
};
|
||||
|
||||
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;
|
||||
|
||||
GdkFont *font = m_font.GetInternalFont( m_scaleY );
|
||||
if (width) (*width) = gdk_string_width( font, string );
|
||||
if (height) (*height) = font->ascent + font->descent;
|
||||
};
|
||||
|
||||
long wxPaintDC::GetCharWidth(void)
|
||||
{
|
||||
if (!Ok()) return 0;
|
||||
|
||||
GdkFont *font = m_font.GetInternalFont( m_scaleY );
|
||||
return gdk_string_width( font, "H" );
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||||
};
|
||||
|
||||
long wxPaintDC::GetCharHeight(void)
|
||||
{
|
||||
if (!Ok()) return 0;
|
||||
|
||||
GdkFont *font = m_font.GetInternalFont( m_scaleY );
|
||||
return font->ascent + font->descent;
|
||||
};
|
||||
|
||||
void wxPaintDC::Clear(void)
|
||||
{
|
||||
if (!Ok()) return;
|
||||
|
||||
DestroyClippingRegion();
|
||||
gdk_window_clear( m_window );
|
||||
};
|
||||
|
||||
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;
|
||||
|
||||
gint width = m_pen.GetWidth();
|
||||
|
||||
GdkLineStyle lineStyle = GDK_LINE_SOLID;
|
||||
switch (m_pen.GetStyle())
|
||||
{
|
||||
case wxSOLID: { lineStyle = GDK_LINE_SOLID; break; };
|
||||
case wxDOT: { lineStyle = GDK_LINE_ON_OFF_DASH; break; };
|
||||
case wxLONG_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; };
|
||||
case wxSHORT_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; };
|
||||
case wxDOT_DASH: { lineStyle = GDK_LINE_DOUBLE_DASH; break; };
|
||||
};
|
||||
|
||||
GdkCapStyle capStyle = GDK_CAP_ROUND;
|
||||
switch (m_pen.GetCap())
|
||||
{
|
||||
case wxCAP_ROUND: { capStyle = GDK_CAP_ROUND; break; };
|
||||
case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; };
|
||||
case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; };
|
||||
};
|
||||
|
||||
GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
|
||||
switch (m_pen.GetJoin())
|
||||
{
|
||||
case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; };
|
||||
case wxJOIN_ROUND: { joinStyle = GDK_JOIN_ROUND; break; };
|
||||
case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; };
|
||||
};
|
||||
|
||||
gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
|
||||
|
||||
m_pen.GetColour().CalcPixel( m_cmap );
|
||||
gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
|
||||
};
|
||||
|
||||
void wxPaintDC::SetBrush( const wxBrush &brush )
|
||||
{
|
||||
if (!Ok()) return;
|
||||
|
||||
if (m_brush == brush) return;
|
||||
|
||||
m_brush = brush;
|
||||
|
||||
if (!m_brush.Ok()) return;
|
||||
|
||||
m_brush.GetColour().CalcPixel( m_cmap );
|
||||
gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
|
||||
|
||||
GdkFill fillStyle = GDK_SOLID;
|
||||
switch (m_brush.GetStyle())
|
||||
{
|
||||
case wxSOLID:
|
||||
case wxTRANSPARENT:
|
||||
break;
|
||||
default:
|
||||
fillStyle = GDK_STIPPLED;
|
||||
};
|
||||
|
||||
gdk_gc_set_fill( m_brushGC, fillStyle );
|
||||
|
||||
if (m_brush.GetStyle() == wxSTIPPLE)
|
||||
{
|
||||
gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
|
||||
};
|
||||
|
||||
if (IS_HATCH(m_brush.GetStyle()))
|
||||
{
|
||||
int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
|
||||
gdk_gc_set_stipple( m_brushGC, hatches[num] );
|
||||
};
|
||||
};
|
||||
|
||||
void wxPaintDC::SetLogicalFunction( int function )
|
||||
{
|
||||
if (m_logicalFunction == function) return;
|
||||
GdkFunction mode = GDK_COPY;
|
||||
switch (function)
|
||||
{
|
||||
case wxXOR: mode = GDK_INVERT; break;
|
||||
case wxINVERT: mode = GDK_INVERT; break;
|
||||
default: break;
|
||||
};
|
||||
m_logicalFunction = function;
|
||||
gdk_gc_set_function( m_penGC, mode );
|
||||
gdk_gc_set_function( m_brushGC, mode );
|
||||
};
|
||||
|
||||
void wxPaintDC::SetTextForeground( const wxColour &col )
|
||||
{
|
||||
if (!Ok()) return;
|
||||
|
||||
if (m_textForegroundColour == col) return;
|
||||
|
||||
m_textForegroundColour = col;
|
||||
if (!m_textForegroundColour.Ok()) return;
|
||||
|
||||
m_textForegroundColour.CalcPixel( m_cmap );
|
||||
gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
|
||||
};
|
||||
|
||||
void wxPaintDC::SetTextBackground( const wxColour &col )
|
||||
{
|
||||
if (!Ok()) return;
|
||||
|
||||
if (m_textBackgroundColour == col) return;
|
||||
|
||||
m_textBackgroundColour = col;
|
||||
if (!m_textBackgroundColour.Ok()) return;
|
||||
|
||||
m_textBackgroundColour.CalcPixel( m_cmap );
|
||||
gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
|
||||
};
|
||||
|
||||
void wxPaintDC::SetBackgroundMode( int WXUNUSED(mode) )
|
||||
{
|
||||
};
|
||||
|
||||
void wxPaintDC::SetPalette( const wxPalette& WXUNUSED(palette) )
|
||||
{
|
||||
};
|
||||
|
||||
void wxPaintDC::SetClippingRegion( long x, long y, long width, long height )
|
||||
{
|
||||
wxDC::SetClippingRegion( x, y, width, height );
|
||||
|
||||
GdkRectangle rect;
|
||||
rect.x = XLOG2DEV(x);
|
||||
rect.y = YLOG2DEV(y);
|
||||
rect.width = XLOG2DEV(x+width);
|
||||
rect.height = YLOG2DEV(y+height);
|
||||
gdk_gc_set_clip_rectangle( m_penGC, &rect );
|
||||
gdk_gc_set_clip_rectangle( m_brushGC, &rect );
|
||||
gdk_gc_set_clip_rectangle( m_textGC, &rect );
|
||||
gdk_gc_set_clip_rectangle( m_bgGC, &rect );
|
||||
|
||||
};
|
||||
|
||||
void wxPaintDC::DestroyClippingRegion(void)
|
||||
{
|
||||
wxDC::DestroyClippingRegion();
|
||||
|
||||
gdk_gc_set_clip_rectangle( m_penGC, NULL );
|
||||
gdk_gc_set_clip_rectangle( m_brushGC, NULL );
|
||||
gdk_gc_set_clip_rectangle( m_textGC, NULL );
|
||||
gdk_gc_set_clip_rectangle( m_bgGC, NULL );
|
||||
};
|
||||
|
||||
void wxPaintDC::SetUpDC(void)
|
||||
{
|
||||
m_ok = TRUE;
|
||||
m_logicalFunction = wxCOPY;
|
||||
m_penGC = gdk_gc_new( m_window );
|
||||
m_brushGC = gdk_gc_new( m_window );
|
||||
m_textGC = gdk_gc_new( m_window );
|
||||
m_bgGC = gdk_gc_new( m_window );
|
||||
SetTextForeground( m_textForegroundColour );
|
||||
SetTextBackground( m_textBackgroundColour );
|
||||
SetPen( m_pen );
|
||||
SetFont( m_font );
|
||||
SetBrush( m_brush );
|
||||
|
||||
gdk_gc_set_background( m_penGC, wxWHITE->GetColor() );
|
||||
|
||||
if (!hatch_bitmap)
|
||||
{
|
||||
hatch_bitmap = hatches;
|
||||
hatch_bitmap[0] = gdk_bitmap_create_from_data( NULL, bdiag_bits, bdiag_width, bdiag_height );
|
||||
hatch_bitmap[1] = gdk_bitmap_create_from_data( NULL, cdiag_bits, cdiag_width, cdiag_height );
|
||||
hatch_bitmap[2] = gdk_bitmap_create_from_data( NULL, fdiag_bits, fdiag_width, fdiag_height );
|
||||
hatch_bitmap[3] = gdk_bitmap_create_from_data( NULL, cross_bits, cross_width, cross_height );
|
||||
hatch_bitmap[4] = gdk_bitmap_create_from_data( NULL, horiz_bits, horiz_width, horiz_height );
|
||||
hatch_bitmap[5] = gdk_bitmap_create_from_data( NULL, verti_bits, verti_width, verti_height );
|
||||
};
|
||||
};
|
||||
|
||||
GdkWindow *wxPaintDC::GetWindow(void)
|
||||
{
|
||||
return m_window;
|
||||
};
|
||||
|
||||
// ----------------------------------- 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 );
|
||||
};
|
||||
Reference in New Issue
Block a user