diff options
Diffstat (limited to 'progs/egl/openvg/trivial/dash.c')
-rw-r--r-- | progs/egl/openvg/trivial/dash.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/progs/egl/openvg/trivial/dash.c b/progs/egl/openvg/trivial/dash.c new file mode 100644 index 00000000000..2e84ddbd4ea --- /dev/null +++ b/progs/egl/openvg/trivial/dash.c @@ -0,0 +1,95 @@ +#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; + +static void +init(void) +{ + static const VGubyte cmds[] = {VG_MOVE_TO_ABS, + VG_LINE_TO_ABS, + VG_LINE_TO_ABS + }; +#if 1 + static const VGfloat coords[] = {100, 100, 150, 100, + 150, 200 + }; +#else + static const VGfloat coords[] = {100, 20, 100, 220, + }; +#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, VG_JOIN_ROUND); + 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; + default: + break; + } + + return VG_TRUE; +} + +int main(int argc, char **argv) +{ + return run(argc, argv, init, reshape, + draw, key_press); +} |