///////////////////////////////////////////////////////////////////////////// // Name: dcclient.cpp // Purpose: // Author: Robert Roebling // RCS-ID: $Id$ // Copyright: (c) 1998 Robert Roebling, Markus Holzem, Chris Breeze // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation "dcclient.h" #endif #include "wx/dcclient.h" #include "wx/dcmemory.h" #include //----------------------------------------------------------------------------- // local data //----------------------------------------------------------------------------- #include "bdiag.xbm" #include "fdiag.xbm" #include "cdiag.xbm" #include "horiz.xbm" #include "verti.xbm" #include "cross.xbm" #define num_hatches 6 static GdkPixmap *hatches[num_hatches]; static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL; //----------------------------------------------------------------------------- // constants //----------------------------------------------------------------------------- #define RAD2DEG 57.2957795131 //----------------------------------------------------------------------------- // temporary implementation of the missing GDK function //----------------------------------------------------------------------------- #include "gdk/gdkprivate.h" void gdk_draw_bitmap (GdkDrawable *drawable, GdkGC *gc, GdkDrawable *src, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height) { GdkWindowPrivate *drawable_private; GdkWindowPrivate *src_private; GdkGCPrivate *gc_private; g_return_if_fail (drawable != NULL); g_return_if_fail (src != NULL); g_return_if_fail (gc != NULL); drawable_private = (GdkWindowPrivate*) drawable; src_private = (GdkWindowPrivate*) src; if (drawable_private->destroyed || src_private->destroyed) return; gc_private = (GdkGCPrivate*) gc; if (width == -1) width = src_private->width; if (height == -1) height = src_private->height; XCopyPlane( drawable_private->xdisplay, src_private->xwindow, drawable_private->xwindow, gc_private->xgc, xsrc, ysrc, width, height, xdest, ydest, 1 ); } //----------------------------------------------------------------------------- // wxWindowDC //----------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxWindowDC,wxDC) wxWindowDC::wxWindowDC(void) { m_penGC = (GdkGC *) NULL; m_brushGC = (GdkGC *) NULL; m_textGC = (GdkGC *) NULL; m_bgGC = (GdkGC *) NULL; m_cmap = (GdkColormap *) NULL; m_isMemDC = FALSE; } wxWindowDC::wxWindowDC( wxWindow *window ) { m_penGC = (GdkGC *) NULL; m_brushGC = (GdkGC *) NULL; m_textGC = (GdkGC *) NULL; m_bgGC = (GdkGC *) NULL; m_cmap = (GdkColormap *) NULL; if (!window) return; GtkWidget *widget = window->m_wxwindow; if (!widget) return; m_window = widget->window; if (!m_window) return; if (window->m_wxwindow) m_cmap = gtk_widget_get_colormap( window->m_wxwindow ); else m_cmap = gtk_widget_get_colormap( window->m_widget ); m_isMemDC = FALSE; SetUpDC(); } wxWindowDC::~wxWindowDC(void) { Destroy(); } void wxWindowDC::FloodFill( long WXUNUSED(x), long WXUNUSED(y), const wxColour &WXUNUSED(col), int WXUNUSED(style) ) { wxFAIL_MSG( "wxWindowDC::FloodFill not implemented" ); } bool wxWindowDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const { wxFAIL_MSG( "wxWindowDC::GetPixel not implemented" ); return FALSE; } void wxWindowDC::DrawLine( long x1, long y1, long x2, long y2 ) { if (!Ok()) return; if (m_pen.GetStyle() != wxTRANSPARENT) { gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) ); } CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } void wxWindowDC::CrossHair( long x, long y ) { if (!Ok()) return; if (m_pen.GetStyle() != wxTRANSPARENT) { int w = 0; int h = 0; GetSize( &w, &h ); long xx = XLOG2DEV(x); long yy = YLOG2DEV(y); gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy ); gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) ); } } void wxWindowDC::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) gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 ); if (m_pen.GetStyle() != wxTRANSPARENT) gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 ); CalcBoundingBox (x1, y1); CalcBoundingBox (x2, y2); } void wxWindowDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) { if (!Ok()) return; long xx = XLOG2DEV(x); long yy = YLOG2DEV(y); long ww = m_signX * XLOG2DEVREL(width); long hh = m_signY * YLOG2DEVREL(height); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } long start = long(sa * 64.0); long end = long(ea * 64.0); if (m_brush.GetStyle() != wxTRANSPARENT) gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end ); if (m_pen.GetStyle() != wxTRANSPARENT) gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end ); CalcBoundingBox (x, y); CalcBoundingBox (x + width, y + height); } void wxWindowDC::DrawPoint( long x, long y ) { if (!Ok()) return; if (m_pen.GetStyle() != wxTRANSPARENT) gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) ); CalcBoundingBox (x, y); } void wxWindowDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset ) { if (!Ok()) return; if (m_pen.GetStyle() == wxTRANSPARENT) return; if (n <= 0) return; CalcBoundingBox( points[0].x + xoffset, points[0].y + yoffset ); 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); gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 ); CalcBoundingBox( points[i+1].x + xoffset, points[i+1].y + yoffset ); } } void wxWindowDC::DrawLines( wxList *points, long xoffset, long yoffset ) { if (!Ok()) return; if (m_pen.GetStyle() == wxTRANSPARENT) return; wxNode *node = points->First(); if (!node) return; wxPoint *pt = (wxPoint*)node->Data(); CalcBoundingBox( pt->x + xoffset, pt->y + yoffset ); 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 a waste again... long y2 = YLOG2DEV(npoint->y + yoffset); gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 ); node = node->Next(); CalcBoundingBox( npoint->x + xoffset, npoint->y + yoffset ); } } void wxWindowDC::DrawPolygon( int n, wxPoint points[], long xoffset, long yoffset, int WXUNUSED(fillStyle) ) { if (!Ok()) return; if (!n) return; GdkPoint *gdkpoints = new GdkPoint[n+1]; int i; for (i = 0 ; i < n ; i++) { gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset); gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset); CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset ); } if (m_brush.GetStyle() != wxTRANSPARENT) gdk_draw_polygon (m_window, m_brushGC, TRUE, gdkpoints, n); // To do: Fillstyle if (m_pen.GetStyle() != wxTRANSPARENT) for (i = 0 ; i < n ; i++) { gdk_draw_line( m_window, m_penGC, gdkpoints[i%n].x, gdkpoints[i%n].y, gdkpoints[(i+1)%n].x, gdkpoints[(i+1)%n].y); } delete[] gdkpoints; } void wxWindowDC::DrawPolygon( wxList *lines, long xoffset, long yoffset, int WXUNUSED(fillStyle)) { if (!Ok()) return; int n = lines->Number(); if (!n) return; GdkPoint *gdkpoints = new GdkPoint[n]; wxNode *node = lines->First(); int cnt = 0; while (node) { wxPoint *p = (wxPoint *) node->Data(); gdkpoints[cnt].x = XLOG2DEV(p->x + xoffset); gdkpoints[cnt].y = YLOG2DEV(p->y + yoffset); node = node->Next(); cnt++; CalcBoundingBox( p->x + xoffset, p->y + yoffset ); } if (m_brush.GetStyle() != wxTRANSPARENT) gdk_draw_polygon (m_window, m_brushGC, TRUE, gdkpoints, n); // To do: Fillstyle if (m_pen.GetStyle() != wxTRANSPARENT) { int i; for (i = 0 ; i < n ; i++) { gdk_draw_line( m_window, m_penGC, gdkpoints[i%n].x, gdkpoints[i%n].y, gdkpoints[(i+1)%n].x, gdkpoints[(i+1)%n].y ); } } delete[] gdkpoints; } void wxWindowDC::DrawRectangle( long x, long y, long width, long height ) { if (!Ok()) return; long xx = XLOG2DEV(x); long yy = YLOG2DEV(y); long ww = m_signX * XLOG2DEVREL(width); long hh = m_signY * YLOG2DEVREL(height); // CMB: draw nothing if transformed w or h is 0 if (ww == 0 || hh == 0) return; // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } if (m_brush.GetStyle() != wxTRANSPARENT) gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh ); if (m_pen.GetStyle() != wxTRANSPARENT) gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 ); CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } void wxWindowDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius ) { if (!Ok()) return; if (radius < 0.0) radius = - radius * ((width < height) ? width : height); long xx = XLOG2DEV(x); long yy = YLOG2DEV(y); long ww = m_signX * XLOG2DEVREL(width); long hh = m_signY * YLOG2DEVREL(height); long rr = XLOG2DEVREL((long)radius); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } // CMB: if radius is zero use DrawRectangle() instead to avoid // X drawing errors with small radii if (rr == 0) { DrawRectangle( x, y, width, height ); return; } // 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) { gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh ); gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 ); gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 ); gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 ); gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 ); gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 ); } if (m_pen.GetStyle() != wxTRANSPARENT) { gdk_draw_line( m_window, m_penGC, xx+rr, yy, xx+ww-rr, yy ); gdk_draw_line( m_window, m_penGC, xx+rr, yy+hh, xx+ww-rr, yy+hh ); gdk_draw_line( m_window, m_penGC, xx, yy+rr, xx, yy+hh-rr ); gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr, xx+ww, yy+hh-rr ); gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 ); gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 ); gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 ); gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 ); } // this ignores the radius CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } void wxWindowDC::DrawEllipse( long x, long y, long width, long height ) { if (!Ok()) return; long xx = XLOG2DEV(x); long yy = YLOG2DEV(y); long ww = m_signX * XLOG2DEVREL(width); long hh = m_signY * YLOG2DEVREL(height); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } if (m_brush.GetStyle() != wxTRANSPARENT) gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 ); if (m_pen.GetStyle() != wxTRANSPARENT) gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 ); CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } bool wxWindowDC::CanDrawBitmap(void) const { return TRUE; } void wxWindowDC::DrawIcon( const wxIcon &icon, long x, long y ) { if (!Ok()) return; if (!icon.Ok()) return; int xx = XLOG2DEV(x); int yy = YLOG2DEV(y); GdkBitmap *mask = (GdkBitmap *) NULL; if (icon.GetMask()) mask = icon.GetMask()->GetBitmap(); if (mask) { gdk_gc_set_clip_mask( m_penGC, mask ); gdk_gc_set_clip_origin( m_penGC, xx, yy ); } GdkPixmap *pm = icon.GetPixmap(); gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 ); if (mask) { gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL ); gdk_gc_set_clip_origin( m_penGC, 0, 0 ); } CalcBoundingBox( x, y ); int width = icon.GetWidth(); int height = icon.GetHeight(); CalcBoundingBox( x + width, y + height ); } void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMask ) { if (!Ok()) return; if (!bitmap.Ok()) return; int xx = XLOG2DEV(x); int yy = YLOG2DEV(y); GdkBitmap *mask = (GdkBitmap *) NULL; if (bitmap.GetMask()) mask = bitmap.GetMask()->GetBitmap(); if (useMask && mask) { gdk_gc_set_clip_mask( m_penGC, mask ); gdk_gc_set_clip_origin( m_penGC, xx, yy ); } GdkPixmap *pm = bitmap.GetPixmap(); gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 ); if (useMask && mask) { gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL ); gdk_gc_set_clip_origin( m_penGC, 0, 0 ); } CalcBoundingBox( x, y ); int width = bitmap.GetWidth(); int height = bitmap.GetHeight(); CalcBoundingBox( x + width, y + height ); } bool wxWindowDC::Blit( long xdest, long ydest, long width, long height, wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool useMask ) { if (!Ok()) return FALSE; CalcBoundingBox( xdest, ydest ); CalcBoundingBox( xdest + width, ydest + height ); wxClientDC *csrc = (wxClientDC*)source; if (csrc->m_isMemDC) { wxMemoryDC* srcDC = (wxMemoryDC*)source; GdkPixmap* pmap = srcDC->m_selected.GetPixmap(); if (pmap) { long xx = XLOG2DEV(xdest); long yy = YLOG2DEV(ydest); GdkBitmap *mask = (GdkBitmap *) NULL; if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap(); if (useMask && mask) { gdk_gc_set_clip_mask( m_textGC, mask ); gdk_gc_set_clip_origin( m_textGC, xx, yy ); } gdk_draw_pixmap( m_window, m_textGC, pmap, source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc), xx, yy, source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) ); if (useMask && mask) { gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL ); gdk_gc_set_clip_origin( m_textGC, 0, 0 ); } return TRUE; } GdkBitmap* bmap = srcDC->m_selected.GetBitmap(); if (bmap) { long xx = XLOG2DEV(xdest); long yy = YLOG2DEV(ydest); GdkBitmap *mask = (GdkBitmap *) NULL; if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap(); if (useMask && mask) { gdk_gc_set_clip_mask( m_textGC, mask ); gdk_gc_set_clip_origin( m_textGC, xx, yy ); } gdk_draw_bitmap( m_window, m_textGC, bmap, source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc), xx, yy, source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) ); if (useMask && mask) { gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL ); gdk_gc_set_clip_origin( m_textGC, 0, 0 ); } return TRUE; } } gdk_window_copy_area ( m_window, m_textGC, XLOG2DEV(xdest), YLOG2DEV(ydest), csrc->GetWindow(), source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc), source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) ); /* gdk_window_copy_area ( m_window, m_textGC, XLOG2DEV(xdest), YLOG2DEV(ydest), csrc->GetWindow(), xsrc, ysrc, width, height ); */ return TRUE; } void wxWindowDC::DrawText( const wxString &text, long x, long y, bool WXUNUSED(use16) ) { if (!Ok()) return; GdkFont *font = m_font.GetInternalFont( m_scaleY ); x = XLOG2DEV(x); y = YLOG2DEV(y); // CMB 21/5/98: draw text background if mode is wxSOLID if (m_backgroundMode == wxSOLID) { long width = gdk_string_width( font, text ); long height = font->ascent + font->descent; gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() ); gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height ); gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() ); } gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text ); // CMB 17/7/98: simple underline: ignores scaling and underlying // X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS // properties (see wxXt implementation) if (m_font.GetUnderlined()) { long width = gdk_string_width( font, text ); long ul_y = y + font->ascent; if (font->descent > 0) ul_y++; gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y); } long w, h; GetTextExtent (text, &w, &h); CalcBoundingBox (x + w, y + h); CalcBoundingBox (x, y); } bool wxWindowDC::CanGetTextExtent(void) const { return TRUE; } void wxWindowDC::GetTextExtent( const wxString &string, long *width, long *height, long *descent, long *externalLeading, wxFont *theFont, bool WXUNUSED(use16) ) { if (!Ok()) return; wxFont fontToUse = m_font; if (theFont) fontToUse = *theFont; GdkFont *font = fontToUse.GetInternalFont( m_scaleY ); if (width) (*width) = long(gdk_string_width( font, string ) / m_scaleX); if (height) (*height) = long((font->ascent + font->descent) / m_scaleY); if (descent) (*descent) = long(font->descent / m_scaleY); if (externalLeading) (*externalLeading) = 0; // ?? } long wxWindowDC::GetCharWidth(void) { if (!Ok()) return 0; GdkFont *font = m_font.GetInternalFont( m_scaleY ); return long(gdk_string_width( font, "H" ) / m_scaleX); } long wxWindowDC::GetCharHeight(void) { if (!Ok()) return 0; GdkFont *font = m_font.GetInternalFont( m_scaleY ); return long((font->ascent + font->descent) / m_scaleY); } void wxWindowDC::Clear(void) { if (!Ok()) return; if (!m_isMemDC) { gdk_window_clear( m_window ); } else { int width,height; GetSize( &width, &height ); gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height ); } } void wxWindowDC::SetFont( const wxFont &font ) { if (!Ok()) return; m_font = font; } void wxWindowDC::SetPen( const wxPen &pen ) { if (!Ok()) return; if (m_pen == pen) return; m_pen = pen; if (!m_pen.Ok()) return; gint width = m_pen.GetWidth(); // CMB: if width is non-zero scale it with the dc if (width <= 0) { width = 1; } else { // X doesn't allow different width in x and y and so we take // the average double w = 0.5 + (abs(XLOG2DEVREL(width)) + abs(YLOG2DEVREL(width))) / 2.0; width = (int)w; } 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 = (width <= 1) ? GDK_CAP_NOT_LAST : 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 wxWindowDC::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] ); } } // CMB 21/7/98: Added SetBackground. Sets background brush // for Clear() and bg colour for shapes filled with cross-hatch brush void wxWindowDC::SetBackground( const wxBrush &brush ) { if (!Ok()) return; if (m_backgroundBrush == brush) return; m_backgroundBrush = brush; if (!m_backgroundBrush.Ok()) return; m_backgroundBrush.GetColour().CalcPixel( m_cmap ); gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() ); gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() ); gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() ); gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() ); GdkFill fillStyle = GDK_SOLID; switch (m_backgroundBrush.GetStyle()) { case wxSOLID: case wxTRANSPARENT: break; default: fillStyle = GDK_STIPPLED; } gdk_gc_set_fill( m_bgGC, fillStyle ); if (m_backgroundBrush.GetStyle() == wxSTIPPLE) { gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() ); } if (IS_HATCH(m_backgroundBrush.GetStyle())) { int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH; gdk_gc_set_stipple( m_bgGC, hatches[num] ); } } void wxWindowDC::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 ); gdk_gc_set_function( m_textGC, mode ); } void wxWindowDC::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 wxWindowDC::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 wxWindowDC::SetBackgroundMode( int mode ) { m_backgroundMode = mode; // CMB 21/7/98: fill style of cross-hatch brushes is affected by // transparent/solid background mode if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT) { gdk_gc_set_fill( m_brushGC, (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED); } } void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) ) { } void wxWindowDC::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 = XLOG2DEVREL(width); rect.height = YLOG2DEVREL(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 wxWindowDC::SetClippingRegion( const wxRegion ®ion ) { if (region.Empty()) { DestroyClippingRegion(); return; } gdk_gc_set_clip_region( m_penGC, region.GetRegion() ); gdk_gc_set_clip_region( m_brushGC, region.GetRegion() ); gdk_gc_set_clip_region( m_textGC, region.GetRegion() ); gdk_gc_set_clip_region( m_bgGC, region.GetRegion() ); } void wxWindowDC::DestroyClippingRegion(void) { wxDC::DestroyClippingRegion(); gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL ); gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL ); gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL ); gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL ); } void wxWindowDC::SetUpDC(void) { Destroy(); 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 ); wxColour tmp_col( m_textForegroundColour ); m_textForegroundColour = wxNullColour; SetTextForeground( tmp_col ); tmp_col = m_textBackgroundColour; m_textBackgroundColour = wxNullColour; SetTextBackground( tmp_col ); wxPen tmp_pen( m_pen ); m_pen = wxNullPen; SetPen( tmp_pen ); wxFont tmp_font( m_font ); m_font = wxNullFont; SetFont( tmp_font ); wxBrush tmp_brush( m_brush ); m_brush = wxNullBrush; SetBrush( tmp_brush ); tmp_brush = m_backgroundBrush; m_backgroundBrush = wxNullBrush; SetBackground( tmp_brush ); if (!hatch_bitmap) { hatch_bitmap = hatches; hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height ); hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height ); hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height ); hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height ); hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height ); hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height ); } } void wxWindowDC::Destroy(void) { if (m_penGC) gdk_gc_unref( m_penGC ); m_penGC = (GdkGC*) NULL; if (m_brushGC) gdk_gc_unref( m_brushGC ); m_brushGC = (GdkGC*) NULL; if (m_textGC) gdk_gc_unref( m_textGC ); m_textGC = (GdkGC*) NULL; if (m_bgGC) gdk_gc_unref( m_bgGC ); m_bgGC = (GdkGC*) NULL; } GdkWindow *wxWindowDC::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 wxWindowDC::DrawSpline( 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 ); } //----------------------------------------------------------------------------- // wxPaintDC //----------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxWindowDC) wxPaintDC::wxPaintDC(void) : wxWindowDC() { } wxPaintDC::wxPaintDC( wxWindow *win ) : wxWindowDC( win ) { } //----------------------------------------------------------------------------- // wxClientDC //----------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxClientDC,wxWindowDC) wxClientDC::wxClientDC(void) : wxWindowDC() { } wxClientDC::wxClientDC( wxWindow *win ) : wxWindowDC( win ) { }