70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
// 6 september 2015
|
|
#include "area.h"
|
|
|
|
struct uiDrawContext {
|
|
cairo_t *cr;
|
|
};
|
|
|
|
uiDrawContext *newContext(cairo_t *cr)
|
|
{
|
|
uiDrawContext *c;
|
|
|
|
c = (uiDrawContext *) g_malloc0(sizeof (uiDrawContext));
|
|
c->cr = cr;
|
|
return c;
|
|
}
|
|
|
|
void uiDrawBeginPathRGB(uiDrawContext *c, uint8_t r, uint8_t g, uint8_t b)
|
|
{
|
|
cairo_set_source_rgb(c->cr,
|
|
((double) r) / 255,
|
|
((double) g) / 255,
|
|
((double) b) / 255);
|
|
cairo_new_path(c->cr);
|
|
}
|
|
|
|
void uiDrawMoveTo(uiDrawContext *c, intmax_t x, intmax_t y)
|
|
{
|
|
cairo_move_to(c->cr, (double) x + 0.5, (double) y + 0.5);
|
|
}
|
|
|
|
void uiDrawLineTo(uiDrawContext *c, intmax_t x, intmax_t y)
|
|
{
|
|
cairo_line_to(c->cr, (double) x + 0.5, (double) y + 0.5);
|
|
}
|
|
|
|
void uiDrawCloseFigure(uiDrawContext *c)
|
|
{
|
|
cairo_close_path(c->cr);
|
|
}
|
|
|
|
void uiDrawStroke(uiDrawContext *c, uiDrawStrokeParams *p)
|
|
{
|
|
switch (p->Cap) {
|
|
case uiDrawLineCapFlat:
|
|
cairo_set_line_cap(c->cr, CAIRO_LINE_CAP_BUTT);
|
|
break;
|
|
case uiDrawLineCapRound:
|
|
cairo_set_line_cap(c->cr, CAIRO_LINE_CAP_ROUND);
|
|
break;
|
|
case uiDrawLineCapSquare:
|
|
cairo_set_line_cap(c->cr, CAIRO_LINE_CAP_SQUARE);
|
|
break;
|
|
}
|
|
switch (p->Join) {
|
|
case uiDrawLineJoinMiter:
|
|
cairo_set_line_join(c->cr, CAIRO_LINE_JOIN_MITER);
|
|
cairo_set_miter_limit(c->cr, p->MiterLimit);
|
|
break;
|
|
case uiDrawLineJoinRound:
|
|
cairo_set_line_join(c->cr, CAIRO_LINE_JOIN_ROUND);
|
|
break;
|
|
case uiDrawLineJoinBevel:
|
|
cairo_set_line_join(c->cr, CAIRO_LINE_JOIN_BEVEL);
|
|
break;
|
|
}
|
|
// TODO comment the /2 here
|
|
cairo_set_line_width(c->cr, ((double) p->Thickness) / 2);
|
|
cairo_stroke(c->cr);
|
|
}
|