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//
// Line style code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2018 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
/**
\file Fl_GDI_Graphics_Driver_line_style.cxx
\brief Line style drawing utility for Windows (GDI) platform.
*/
#include <FL/Fl.H>
#include <FL/platform.H>
#include <FL/fl_draw.H>
#include "Fl_GDI_Graphics_Driver.H"
void Fl_GDI_Graphics_Driver::line_style_unscaled(int style, int width, char* dashes) {
// According to Bill, the "default" cap and join should be the
// "fastest" mode supported for the platform. I don't know why
// they should be different (same graphics cards, etc., right?) MRS
static const DWORD Cap[4] = {PS_ENDCAP_FLAT, PS_ENDCAP_FLAT, PS_ENDCAP_ROUND, PS_ENDCAP_SQUARE};
static const DWORD Join[4] = {PS_JOIN_ROUND, PS_JOIN_MITER, PS_JOIN_ROUND, PS_JOIN_BEVEL};
int s1 = PS_GEOMETRIC | Cap[(style>>8)&3] | Join[(style>>12)&3];
DWORD a[16];
int n = 0;
if (dashes && dashes[0]) {
s1 |= PS_USERSTYLE;
for (n = 0; n < 16 && *dashes; n++) a[n] = *dashes++;
} else {
s1 |= style & 0xff; // allow them to pass any low 8 bits for style
}
if ((style || n) && !width) width = int(scale()); // fix cards that do nothing for 0?
if (!width) width = 1;
if (!fl_current_xmap) color(FL_BLACK);
LOGBRUSH penbrush = {BS_SOLID,fl_RGB(),0}; // can this be fl_brush()?
HPEN newpen = ExtCreatePen(s1, width, &penbrush, n, n ? a : 0);
if (!newpen) {
Fl::error("fl_line_style(): Could not create GDI pen object.");
return;
}
HPEN oldpen = (HPEN)SelectObject(gc_, newpen);
DeleteObject(oldpen);
DeleteObject(fl_current_xmap->pen);
fl_current_xmap->pen = newpen;
style_ = style;
}
#if USE_GDIPLUS
void Fl_GDIplus_Graphics_Driver::line_style(int style, int width, char* dashes) {
if (!active) return Fl_Scalable_Graphics_Driver::line_style(style, width, dashes);
int gdi_width = (width ? width : 1);
pen_->SetWidth(Gdiplus::REAL(gdi_width));
int standard_dash = style & 0x7;
if (standard_dash == FL_DASH )
pen_->SetDashStyle(Gdiplus::DashStyleDash);
else if (standard_dash == FL_DOT )
pen_->SetDashStyle(Gdiplus::DashStyleDot);
else if (standard_dash == FL_DASHDOT )
pen_->SetDashStyle(Gdiplus::DashStyleDashDot);
else if (standard_dash == FL_DASHDOTDOT )
pen_->SetDashStyle(Gdiplus::DashStyleDashDotDot);
else if(!dashes || !*dashes)
pen_->SetDashStyle(Gdiplus::DashStyleSolid);
if (style & FL_CAP_ROUND ) {
pen_->SetStartCap(Gdiplus::LineCapRound);
pen_->SetEndCap(Gdiplus::LineCapRound);
} else if (style & FL_CAP_SQUARE ) {
pen_->SetStartCap(Gdiplus::LineCapSquare);
pen_->SetEndCap(Gdiplus::LineCapSquare);
} else {
pen_->SetStartCap(Gdiplus::LineCapFlat);
pen_->SetEndCap(Gdiplus::LineCapFlat);
}
if (style & FL_JOIN_MITER ) {
pen_->SetLineJoin(Gdiplus::LineJoinMiter);
} else if (style & FL_JOIN_BEVEL ) {
pen_->SetLineJoin(Gdiplus::LineJoinBevel);
} else {
pen_->SetLineJoin(Gdiplus::LineJoinRound);
}
if (dashes && *dashes) {
int n = 0; while (dashes[n]) n++;
Gdiplus::REAL *gdi_dashes = new Gdiplus::REAL[n];
for (int i = 0; i < n; i++) gdi_dashes[i] = dashes[i]/float(gdi_width);
pen_->SetDashPattern(gdi_dashes, n);
delete[] gdi_dashes;
}
Fl_Scalable_Graphics_Driver::line_style(style, width, dashes);
}
#endif
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