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Code Issues 33 Projects Packages Wiki Activity Actions

CtrlCore: cairo line dash support

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git-svn-id: svn://ultimatepp.org/upp/trunk@5905 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2013-03-12 19:05:50 +00:00
parent 129166ec20
commit 9930ecef51
1 changed files with 34 additions and 5 deletions
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39
uppsrc/CtrlCore/GtkDrawOp.cpp
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@ -131,16 +131,45 @@ void SystemDraw::DrawRectOp(int x, int y, int cx, int cy, Color color)
void SystemDraw::DrawLineOp(int x1, int y1, int x2, int y2, int width, Color color)
{
SetColor(color);
if(y1 == y2)
if(width == PEN_SOLID)
width = 1;
if(y1 == y2 && width >= 0)
DrawRect(x1, y1, x2 - x1, width, color);
else
if(x1 == x2)
if(x1 == x2 && width >= 0)
DrawRect(x1, y1, width, y2 - y1, color);
else {
cairo_move_to(cr, x1, y1);
cairo_line_to(cr, x2, y2);
cairo_set_line_width (cr, width);
static double dash[] = { 18, 6 };
static double dot[] = { 3, 3 };
static double dashdot[] = { 9, 6, 3, 6 };
static double dashdotdot[] = { 9, 3, 3, 3, 3, 3 };
switch(width) {
case PEN_NULL: return;
case PEN_DASH: cairo_set_dash(cr, dash, __countof(dash), 0); break;
case PEN_DOT: cairo_set_dash(cr, dot, __countof(dot), 0); break;
case PEN_DASHDOT: cairo_set_dash(cr, dashdot, __countof(dashdot), 0); break;
case PEN_DASHDOTDOT: cairo_set_dash(cr, dashdotdot, __countof(dashdotdot), 0); break;
default: break;
}
int w = width < 0 ? 1 : width;
double d = w / 2.0;
if(y1 == y2) {
cairo_move_to(cr, min(x1, x1) + 0.5, y1 + d);
cairo_line_to(cr, max(x1, x2) - 0.5, y1 + d);
}
else
if(x1 == x2) {
cairo_move_to(cr, x1 + d, min(y1, y2) + 0.5);
cairo_line_to(cr, x1 + d, max(y1, y2) - 0.5);
}
else {
cairo_move_to(cr, x1, y1);
cairo_line_to(cr, x2, y2);
}
cairo_set_line_width(cr, w);
cairo_stroke(cr);
if(width < 0)
cairo_set_dash(cr, dot, 0, 0);
}
}