mirror of
git://projects.qi-hardware.com/eda-tools.git
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343 lines
6.9 KiB
C
343 lines
6.9 KiB
C
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/*
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* record.c - Record graphics operations by layers and replay
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*
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* Written 2016 by Werner Almesberger
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* Copyright 2016 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdlib.h>
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#include <limits.h>
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#include <math.h>
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#include "util.h"
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#include "style.h"
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#include "gfx.h"
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#include "text.h"
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#include "record.h"
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struct record_obj {
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enum ro_type {
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ro_line,
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ro_rect,
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ro_poly,
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ro_circ,
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ro_arc,
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ro_text,
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} type;
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int x, y;
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int color, fill_color;
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union {
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struct {
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int ex, ey;
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} line;
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struct {
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int ex, ey;
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} rect;
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struct {
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unsigned n;
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int *vx, *vy;
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} poly;
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struct {
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int r;
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} circ;
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struct {
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int r;
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int sa, ea;
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} arc;
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struct {
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char *s;
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unsigned size;
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enum text_align align;
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int rot;
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} text;
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} u;
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struct record_obj *next;
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};
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static void bb(struct record *rec, int x, int y)
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{
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if (rec->xmin > x)
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rec->xmin = x;
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if (rec->ymin > y)
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rec->ymin = y;
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if (rec->xmax < x)
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rec->xmax = x;
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if (rec->ymax < y)
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rec->ymax = y;
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}
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static void bb_rot(struct record *rec, int x, int y, int rot)
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{
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double a = -rot / 180.0 * M_PI;
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// @@@ figure this out later
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return;
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bb(rec, cos(a) * x + sin(a) * y, cos(a) * y - sin(a) * x);
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}
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static struct record_obj *new_obj(struct record *rec, enum ro_type type,
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int color, int fill_color, unsigned layer)
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{
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struct record_layer **curr_layer;
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struct record_layer *new_layer;
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struct record_obj *new_obj;
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for (curr_layer = &rec->layers; *curr_layer;
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curr_layer= &(*curr_layer)->next) {
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if ((*curr_layer)->layer == layer)
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goto this_layer;
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if ((*curr_layer)->layer < layer)
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break;
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}
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new_layer = alloc_type(struct record_layer);
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new_layer->layer = layer;
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new_layer->objs = NULL;
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new_layer->next_obj = &new_layer->objs;
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new_layer->next = *curr_layer;
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*curr_layer = new_layer;
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this_layer:
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new_obj = alloc_type(struct record_obj);
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new_obj->type = type;
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new_obj->color = color;
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new_obj->fill_color = fill_color;
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new_obj->next = NULL;
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*(*curr_layer)->next_obj = new_obj;
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(*curr_layer)->next_obj = &new_obj->next;
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return new_obj;
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}
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void record_line(void *ctx, int sx, int sy, int ex, int ey,
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int color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj =
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new_obj(rec, ro_line, color, COLOR_NONE, layer);
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bb(rec, sx, sy);
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bb(rec, ex, ey);
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obj->x = sx;
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obj->y = sy;
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obj->u.line.ex = ex;
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obj->u.line.ey = ey;
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}
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void record_rect(void *ctx, int sx, int sy, int ex, int ey,
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int color, int fill_color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj =
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new_obj(rec, ro_rect, color, fill_color, layer);
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bb(rec, sx, sy);
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bb(rec, ex, ey);
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obj->x = sx;
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obj->y = sy;
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obj->u.rect.ex = ex;
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obj->u.rect.ey = ey;
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}
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void record_poly(void *ctx,
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int points, const int x[points], const int y[points],
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int color, int fill_color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj =
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new_obj(ctx, ro_poly, color, fill_color, layer);
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int i;
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unsigned size;
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for (i = 0; i != points; i++)
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bb(rec, x[i], y[i]);
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obj->u.poly.n = points;
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size = sizeof(int) * points;
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obj->u.poly.vx = alloc_size(size);
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obj->u.poly.vy = alloc_size(size);
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memcpy(obj->u.poly.vx, x, size);
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memcpy(obj->u.poly.vy, y, size);
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}
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void record_circ(void *ctx, int x, int y, int r,
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int color, int fill_color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj =
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new_obj(ctx, ro_circ, color, fill_color, layer);
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bb(rec, x - r, y - r);
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bb(rec, x + r, y + r);
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obj->x = x;
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obj->y = y;
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obj->u.circ.r = r;
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}
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void record_arc(void *ctx, int x, int y, int r, int sa, int ea,
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int color, int fill_color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj = new_obj(ctx, ro_arc, color, fill_color, layer);
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bb(rec, x - r, y - r);
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bb(rec, x + r, y + r);
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obj->x = x;
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obj->y = y;
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obj->u.arc.r = r;
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obj->u.arc.sa = sa;
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obj->u.arc.ea = ea;
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}
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void record_text(void *ctx, int x, int y, const char *s, unsigned size,
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enum text_align align, int rot, unsigned color, unsigned layer)
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{
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struct record *rec = ctx;
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struct record_obj *obj =
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new_obj(ctx, ro_text, color, COLOR_NONE, layer);
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unsigned width = rec->ops->text_width(rec->user, s, size);
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bb_rot(rec, x, y - size, rot);
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bb_rot(rec, x + width, y, rot);
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obj->x = x;
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obj->y = y;
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obj->u.text.s = stralloc(s);
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obj->u.text.size = size;
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obj->u.text.align = align;
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obj->u.text.rot = rot;
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}
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void record_init(struct record *rec, const struct gfx_ops *ops, void *user)
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{
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rec->ops = ops;
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rec->user = user;
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rec->xmin = rec->ymin = INT_MAX;
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rec->xmax = rec->ymax = INT_MIN;
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rec->layers = NULL;
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}
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void record_wipe(struct record *rec)
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{
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rec->layers = NULL;
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}
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void record_replay(const struct record *rec)
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{
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const struct gfx_ops *ops = rec->ops;
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void *ctx = rec->user;
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const struct record_layer *layer;
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const struct record_obj *obj;
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for (layer = rec->layers; layer; layer = layer->next)
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for (obj = layer->objs; obj; obj = obj->next)
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switch (obj->type) {
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case ro_line:
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ops->line(ctx, obj->x, obj->y,
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obj->u.line.ex, obj->u.line.ey,
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obj->color, layer->layer);
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break;
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case ro_rect:
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ops->rect(ctx, obj->x, obj->y,
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obj->u.rect.ex, obj->u.rect.ey,
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obj->color, obj->fill_color, layer->layer);
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break;
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case ro_poly:
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ops->poly(ctx, obj->u.poly.n,
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obj->u.poly.vx, obj->u.poly.vy,
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obj->color, obj->fill_color, layer->layer);
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break;
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case ro_circ:
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ops->circ(ctx, obj->x, obj->y,
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obj->u.circ.r,
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obj->color, obj->fill_color, layer->layer);
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break;
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case ro_arc:
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ops->arc(ctx, obj->x, obj->y, obj->u.arc.r,
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obj->u.arc.sa, obj->u.arc.ea,
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obj->color, obj->fill_color, layer->layer);
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break;
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case ro_text:
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ops->text(ctx, obj->x, obj->y, obj->u.text.s,
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obj->u.text.size, obj->u.text.align,
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obj->u.text.rot,
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obj->color, layer->layer);
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break;
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default:
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abort();
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}
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}
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void record_bbox(const struct record *rec, int *x, int *y, int *w, int *h)
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{
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if (x)
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*x = rec->xmin;
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if (y)
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*y = rec->ymin;
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if (w)
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*w = rec->xmax - rec->xmin + 1;
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if (h)
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*h = rec->ymax - rec->ymin + 1;
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}
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static void record_obj_destroy(struct record_obj *obj)
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{
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switch (obj->type) {
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case ro_poly:
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free(obj->u.poly.vx);
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free(obj->u.poly.vy);
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break;
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case ro_text:
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free(obj->u.text.s);
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break;
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default:
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break;
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}
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free(obj);
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}
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void record_destroy(struct record *rec)
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{
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struct record_layer *next_layer;
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struct record_obj *next_obj;
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while (rec->layers) {
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next_layer = rec->layers->next;
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while (rec->layers->objs) {
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next_obj = rec->layers->objs->next;
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record_obj_destroy(rec->layers->objs);
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rec->layers->objs = next_obj;
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}
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free(rec->layers);
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rec->layers = next_layer;
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}
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}
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