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#include "eglcommon.h"
#include <VG/openvg.h>
#include <X11/keysym.h>
#include <stdio.h>
const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
const VGfloat color[4] = {0.4, 0.1, 1.0, 1.0};
VGPath path;
VGPaint fill;
VGint cap_style = VG_CAP_BUTT;
VGint join_style = VG_JOIN_MITER;
static void
init(void)
{
#if 0
static const VGubyte cmds[] = {VG_MOVE_TO_ABS,
VG_CUBIC_TO_ABS,
};
static const VGfloat coords[] = {30, 30, 264, 0, 0, 264, 234, 234
};
#else
static const VGubyte cmds[] = {VG_MOVE_TO_ABS,
VG_LINE_TO_ABS,
VG_LINE_TO_ABS
};
static const VGfloat coords[] = {30, 30, 202, 30, 150, 224
};
#endif
VGfloat dash_pattern[2] = { 20.f, 20.f };
path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0,
VG_PATH_CAPABILITY_APPEND_TO);
vgAppendPathData(path, 3, cmds, coords);
fill = vgCreatePaint();
vgSetParameterfv(fill, VG_PAINT_COLOR, 4, color);
vgSetPaint(fill, VG_FILL_PATH);
vgSetfv(VG_CLEAR_COLOR, 4, white_color);
vgSetf(VG_STROKE_LINE_WIDTH, 20);
vgSeti(VG_STROKE_CAP_STYLE, cap_style);
vgSeti(VG_STROKE_JOIN_STYLE, join_style);
vgSetfv(VG_STROKE_DASH_PATTERN, 2, dash_pattern);
vgSetf(VG_STROKE_DASH_PHASE, 0.0f);
}
/* new window size or exposure */
static void
reshape(int w, int h)
{
vgLoadIdentity();
}
static void
draw(void)
{
vgClear(0, 0, window_width(), window_height());
vgDrawPath(path, VG_STROKE_PATH);
vgFlush();
}
static int key_press(unsigned key)
{
switch(key) {
case XK_c:
case XK_C:
++cap_style;
if (cap_style > VG_CAP_SQUARE)
cap_style = VG_CAP_BUTT;
switch(cap_style) {
case VG_CAP_BUTT:
fprintf(stderr, "Cap style 'butt'\n");
break;
case VG_CAP_ROUND:
fprintf(stderr, "Cap style 'round'\n");
break;
case VG_CAP_SQUARE:
fprintf(stderr, "Cap style 'square'\n");
break;
}
vgSeti(VG_STROKE_CAP_STYLE, cap_style);
break;
case XK_j:
case XK_J:
++join_style;
if (join_style > VG_JOIN_BEVEL)
join_style = VG_JOIN_MITER;
switch(join_style) {
case VG_JOIN_MITER:
fprintf(stderr, "Join style 'miter'\n");
break;
case VG_JOIN_ROUND:
fprintf(stderr, "Join style 'round'\n");
break;
case VG_JOIN_BEVEL:
fprintf(stderr, "Join style 'bevel'\n");
break;
}
vgSeti(VG_STROKE_JOIN_STYLE, join_style);
break;
default:
break;
}
return VG_TRUE;
}
int main(int argc, char **argv)
{
return run(argc, argv, init, reshape,
draw, key_press);
}
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