mirror of
https://git.sr.ht/~calebccff/pbsplash
synced 2026-01-12 20:48:40 -09:00
initial svg rendering
messsy
This commit is contained in:
Caleb Connolly
parent
062a665899
commit
2844142e1b
3 changed files with 3154 additions and 25 deletions
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,2 +1,3 @@
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builddir/
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build/
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3008
include/nanosvg.h
Normal file
3008
include/nanosvg.h
Normal file
File diff suppressed because it is too large
Load diff
170
src/pbsplash.c
170
src/pbsplash.c
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@ -4,11 +4,18 @@
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#include <tfblib/tfblib.h>
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#include <tfblib/tfb_colors.h>
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#include <string.h>
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#include <math.h>
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#define NANOSVG_ALL_COLOR_KEYWORDS // Include full list of color keywords.
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#define NANOSVG_IMPLEMENTATION // Expands implementation
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#include "nanosvg.h"
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#include "logo.h"
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#define MSG_MAX_LEN 4096
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int usage() {
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int usage()
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{
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fprintf(stderr, "pbsplash: a simple fbsplash tool\n");
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fprintf(stderr, "--------------------------------\n");
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fprintf(stderr, "pbsplash [-h] [-s splash image] [-m message]\n\n");
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@ -19,56 +26,175 @@ int usage() {
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return 1;
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}
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static float distPtSeg(float x, float y, float px, float py, float qx, float qy)
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{
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float pqx, pqy, dx, dy, d, t;
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pqx = qx-px;
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pqy = qy-py;
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dx = x-px;
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dy = y-py;
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d = pqx*pqx + pqy*pqy;
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t = pqx*dx + pqy*dy;
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if (d > 0) t /= d;
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if (t < 0) t = 0;
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else if (t > 1) t = 1;
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dx = px + t*pqx - x;
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dy = py + t*pqy - y;
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return dx*dx + dy*dy;
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}
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static void vertex2f(float x, float y, bool reset)
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{
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static float x1 = 0.0f;
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static float y1 = 0.0f;
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static bool first = true;
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if (reset) {
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x1 = 0.0f;
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x1 = 0.0f;
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first = true;
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}
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if (!first)
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tfb_draw_line(x, y, x1, y1, tfb_green);
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else
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first = false;
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x1 = x;
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y1 = y;
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}
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static void cubicBez(float x1, float y1, float x2, float y2,
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float x3, float y3, float x4, float y4,
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float tol, int level)
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{
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float x12, y12, x23, y23, x34, y34, x123, y123, x234, y234, x1234, y1234;
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float d;
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if (level > 25) {
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fprintf(stdout, "error: max subdivision level reached\n");
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return;
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}
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x12 = (x1 + x2) * 0.5f;
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y12 = (y1 + y2) * 0.5f;
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x23 = (x2 + x3) * 0.5f;
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y23 = (y2 + y3) * 0.5f;
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x34 = (x3 + x4) * 0.5f;
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y34 = (y3 + y4) * 0.5f;
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x123 = (x12 + x23) * 0.5f;
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y123 = (y12 + y23) * 0.5f;
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x234 = (x23 + x34) * 0.5f;
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y234 = (y23 + y34) * 0.5f;
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x1234 = (x123 + x234) * 0.5f;
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y1234 = (y123 + y234) * 0.5f;
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d = distPtSeg(x1234, y1234, x1, y1, x4, y4);
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if (d > tol * tol)
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{
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cubicBez(x1, y1, x12, y12, x123, y123, x1234, y1234, tol, level + 1);
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cubicBez(x1234, y1234, x234, y234, x34, y34, x4, y4, tol, level + 1);
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}
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else
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{
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vertex2f(x4, y4, false);
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}
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}
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static void drawPath(float *pts, int npts, int xoff, int yoff, float scale_x, float scale_y, char closed, float tol)
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{
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int i;
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vertex2f(xoff + pts[0] * scale_x, yoff + pts[1] * scale_y, true);
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for (i = 0; i < npts-1; i += 3) {
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float* p = &pts[i*2];
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// fprintf(stdout, "ptx0: %f, pty0: %f, ptx1: %f, pty1: %f, ptx2: %f, pty2: %f, ptx3: %f, pty3: %f\n", p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
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cubicBez(xoff + p[0] * scale_x, yoff + p[1] * scale_y, xoff + p[2] * scale_x, yoff + p[3] * scale_y, xoff + p[4] * scale_x, yoff + p[5] * scale_y, xoff + p[6] * scale_x, yoff + p[7] * scale_y, tol, 0);
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}
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if (closed) {
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vertex2f(xoff + pts[0] * scale_x, yoff + pts[1] * scale_y, false);
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}
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}
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// Blit an SVG to the framebuffer using tfblib. The image is
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// scaled based on the target width and height.
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static void blit_svg(struct NSVGimage *image, int x, int y, int width, int height)
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{
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struct NSVGshape *shape;
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struct NSVGpath *path;
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fprintf(stdout, "size: %f x %f\n", image->width, image->height);
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float sz_x = (float)width / image->width;
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float sz_y = (float)height / image->height;
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fprintf(stdout, "scale: %f x %f\n", sz_x, sz_y);
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for (shape = image->shapes; shape != NULL; shape = shape->next)
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{
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for (path = shape->paths; path != NULL; path = path->next)
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{
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drawPath(path->pts, path->npts, x, y, sz_x, sz_y, path->closed, 0.1f);
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}
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}
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}
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int main(int argc, char **argv)
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{
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int rc = 0;
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int opt;
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char *message = calloc(MSG_MAX_LEN, 1);
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char *splash_image;
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struct NSVGimage *image;
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for (int i = 1; i < argc; i++)
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{
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printf("%d: %s\n", i, argv[i]);
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if (strcmp(argv[i], "-h") == 0) {
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if (strcmp(argv[i], "-h") == 0)
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{
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rc = usage();
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goto out;
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}
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if (strcmp(argv[i], "-s") == 0) {
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splash_image = argv[1];
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if (strcmp(argv[i], "-s") == 0)
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{
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splash_image = argv[i + 1];
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printf("splash_image path: %s\n", splash_image);
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continue;
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}
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if (strcmp(argv[i], "-m") == 0) {
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if (*argv[i+1] == '-') {
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if (strcmp(argv[i], "-m") == 0)
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{
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if (*argv[i + 1] == '-')
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{
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rc = read(STDIN_FILENO, message, MSG_MAX_LEN);
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if (rc < 0)
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goto out;
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printf("%s\n", message);
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} else {
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}
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else
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{
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free(message);
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message = argv[i+1];
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message = argv[i + 1];
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}
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printf("message: %s\n", message);
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continue;
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}
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}
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if ((rc = tfb_acquire_fb(0, "/dev/fb0", "/dev/tty1")) != TFB_SUCCESS) {
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if ((rc = tfb_acquire_fb(0, "/dev/fb0", "/dev/tty1")) != TFB_SUCCESS)
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{
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fprintf(stderr, "tfb_acquire_fb() failed with error code: %d\n", rc);
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rc = 1;
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goto out;
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}
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int w = (int) tfb_screen_width();
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int h = (int) tfb_screen_height();
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int sz = (float)(w < h ? w : h) * 0.5;
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int w = (int)tfb_screen_width();
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int h = (int)tfb_screen_height();
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float sz = (float)(w < h ? w : h) * 0.6f;
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fprintf(stdout, "w=%du, h=%du\n", w, h);
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float x = (float)w / 2 - sz / 2;
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float y = (float)h / 2 - sz / 2 - 300;
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float textX = x;
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float textY = y;
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fprintf(stdout, "x=%f, y=%f, sz=%f\n", x, y, sz);
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image = nsvgParseFromFile(splash_image, "px", 96);
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/* Paint the whole screen in black */
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tfb_clear_screen(tfb_black);
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@ -76,25 +202,19 @@ int main(int argc, char **argv)
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/* Draw some text on-screen */
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tfb_draw_string_scaled(x + 75, y + sz + 40, tfb_white, tfb_black, 4, 4, "postmarketOS");
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if (message) {
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tfb_draw_string_scaled_wrapped(50, (int) ((float)h * 0.6), tfb_white, tfb_black, 2, 2, 80, message);
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if (message)
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{
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tfb_draw_string_scaled_wrapped(50, (int)((float)h * 0.6), tfb_white, tfb_black, 2, 2, 80, message);
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}
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for (size_t i = 0; i < sizeof(logo) / sizeof(logo[0]); i+=4)
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{
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int x1 = (int) (logo[i] / 100 * sz) + (int)x;
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int y1 = (int) (logo[i+1] / 100 * sz) + (int)y;
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int x2 = (int) (logo[i+2] / 100 * sz) + (int)x;
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int y2 = (int) (logo[i+3] / 100 * sz) + (int)y;
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//printf("x1: %d, y1: %d, x2: %d, y2: %d\n", x1, y1, x1, y2);
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tfb_draw_line(x1, y1, x2, y2, tfb_green);
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}
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blit_svg(image, x, y, sz, sz);
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tfb_flush_window();
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tfb_flush_fb();
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sleep(20);
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out:
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nsvgDelete(image);
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tfb_release_fb();
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free(message);
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return rc;
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