mirror of
git://projects.qi-hardware.com/eda-tools.git
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681 lines
14 KiB
C
681 lines
14 KiB
C
/*
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* gui.c - GUI for eeshow
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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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/*
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* Resources:
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*
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* http://zetcode.com/gfx/cairo/cairobackends/
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* https://developer.gnome.org/gtk3/stable/gtk-migrating-2-to-3.html
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*/
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#define _GNU_SOURCE /* for asprintf */
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include <cairo/cairo.h>
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#include <gtk/gtk.h>
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#include "util.h"
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#include "cro.h"
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#include "gfx.h"
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#include "git-hist.h"
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#include "sch.h"
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#include "gui-aoi.h"
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#include "gui-over.h"
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#include "gui.h"
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struct gui_ctx;
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struct gui_sheet {
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const const struct sheet *sch;
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struct cro_ctx *gfx_ctx;
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int w, h;
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int xmin, ymin;
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struct aoi *aois; /* areas of interest; in schematics coord */
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struct gui_sheet *next;
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};
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struct gui_hist {
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struct hist *hist;
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struct gui_hist *next;
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};
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struct gui_ctx {
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GtkWidget *da;
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int curr_x; /* last on-screen mouse position */
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int curr_y;
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unsigned zoom; /* scale by 1.0 / (1 << zoom) */
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int x, y; /* center, in eeschema coordinates */
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bool panning;
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int pan_x, pan_y;
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struct gui_hist *hist; /* revision history; NULL if none */
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struct hist *vcs_hist; /* underlying VCS data; NULL if none */
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struct overlay *sheet_overlays;
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struct overlay *vcs_overlays;
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struct aoi *aois; /* areas of interest; in canvas coord */
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struct gui_sheet *curr_sheet;
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/* current sheet */
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struct gui_sheet *sheets;
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};
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/* ----- Helper functions -------------------------------------------------- */
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static void redraw(const struct gui_ctx *ctx)
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{
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gtk_widget_queue_draw(ctx->da);
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}
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/* ----- Rendering --------------------------------------------------------- */
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static void draw_vcs_overlays(const struct gui_ctx *ctx, cairo_t *cr)
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{
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struct overlay *over;
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int x = 200;
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int y = 5;
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for (over = ctx->vcs_overlays; over;)
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over = overlay_draw(over, cr, &x, &y);
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}
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static gboolean on_draw_event(GtkWidget *widget, cairo_t *cr,
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gpointer user_data)
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{
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const struct gui_ctx *ctx = user_data;
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const struct gui_sheet *sheet = ctx->curr_sheet;
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GtkAllocation alloc;
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float f = 1.0 / (1 << ctx->zoom);
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int x, y;
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gtk_widget_get_allocation(ctx->da, &alloc);
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x = -(sheet->xmin + ctx->x) * f + alloc.width / 2;
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y = -(sheet->ymin + ctx->y) * f + alloc.height / 2;
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cro_canvas_draw(sheet->gfx_ctx, cr, x, y, f);
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overlay_draw_all(ctx->sheet_overlays, cr);
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draw_vcs_overlays(ctx, cr);
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return FALSE;
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}
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static void render(struct gui_ctx *ctx, struct gui_sheet *sheet)
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{
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char *argv[] = { "gui", NULL };
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gfx_init(&cro_canvas_ops, 1, argv);
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sch_render(sheet->sch);
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cro_canvas_end(gfx_ctx,
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&sheet->w, &sheet->h, &sheet->xmin, &sheet->ymin);
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sheet->gfx_ctx = gfx_ctx;
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ctx->x = sheet->w >> 1;
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ctx->y = sheet->h >> 1;
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// gfx_end();
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}
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/* ----- Tools ------------------------------------------------------------- */
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static void canvas_coord(const struct gui_ctx *ctx,
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int ex, int ey, int *x, int *y)
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{
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GtkAllocation alloc;
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int sx, sy;
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gtk_widget_get_allocation(ctx->da, &alloc);
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sx = ex - alloc.width / 2;
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sy = ey - alloc.height / 2;
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*x = (sx << ctx->zoom) + ctx->x;
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*y = (sy << ctx->zoom) + ctx->y;
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}
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/* ----- Panning ----------------------------------------------------------- */
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static void pan_begin(struct gui_ctx *ctx, int x, int y)
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{
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if (ctx->panning)
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return;
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ctx->panning = 1;
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ctx->pan_x = x;
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ctx->pan_y = y;
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}
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static void pan_update(struct gui_ctx *ctx, int x, int y)
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{
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if (!ctx->panning)
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return;
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ctx->x -= (x - ctx->pan_x) << ctx->zoom;
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ctx->y -= (y - ctx->pan_y) << ctx->zoom;
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ctx->pan_x = x;
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ctx->pan_y = y;
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redraw(ctx);
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}
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static void pan_end(struct gui_ctx *ctx, int x, int y)
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{
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pan_update(ctx, x, y);
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ctx->panning = 0;
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}
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/* ----- Zoom -------------------------------------------------------------- */
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static void zoom_in(struct gui_ctx *ctx, int x, int y)
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{
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if (ctx->zoom == 0)
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return;
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ctx->zoom--;
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ctx->x = (ctx->x + x) / 2;
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ctx->y = (ctx->y + y) / 2;
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redraw(ctx);
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}
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static void zoom_out(struct gui_ctx *ctx, int x, int y)
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{
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if (ctx->curr_sheet->w >> ctx->zoom <= 16)
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return;
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ctx->zoom++;
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ctx->x = 2 * ctx->x - x;
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ctx->y = 2 * ctx->y - y;
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redraw(ctx);
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}
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static void zoom_to_extents(struct gui_ctx *ctx)
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{
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const struct gui_sheet *sheet = ctx->curr_sheet;
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GtkAllocation alloc;
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ctx->x = sheet->w / 2;
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ctx->y = sheet->h / 2;
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gtk_widget_get_allocation(ctx->da, &alloc);
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ctx->zoom = 0;
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while (sheet->w >> ctx->zoom > alloc.width ||
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sheet->h >> ctx->zoom > alloc.height)
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ctx->zoom++;
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redraw(ctx);
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}
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/* ----- Revision history -------------------------------------------------- */
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static void hide_history(void *user)
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{
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struct gui_ctx *ctx = user;
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overlay_remove_all(&ctx->vcs_overlays);
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redraw(ctx);
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}
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static void show_history(struct gui_ctx *ctx)
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{
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struct gui_hist *h = ctx->hist;
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char *s;
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overlay_remove_all(&ctx->vcs_overlays);
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for (h = ctx->hist; h; h = h->next) {
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// @@@ \n doesn't work with cairo_show_text :-(
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if (asprintf(&s, "commit\n%s", vcs_git_summary(h->hist))) {}
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overlay_add(&ctx->vcs_overlays, s, &ctx->aois,
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NULL, hide_history, ctx);
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}
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redraw(ctx);
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}
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static void show_history_cb(void *user)
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{
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struct gui_ctx *ctx = user;
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show_history(ctx);
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}
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/* ----- Navigate sheets --------------------------------------------------- */
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static bool go_up_sheet(struct gui_ctx *ctx);
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static void close_subsheet(void *user)
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{
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struct gui_ctx *ctx = user;
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go_up_sheet(ctx);
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}
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static void go_to_sheet(struct gui_ctx *ctx, struct gui_sheet *sheet)
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{
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ctx->curr_sheet = sheet;
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overlay_remove_all(&ctx->sheet_overlays);
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if (ctx->hist) {
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char *s;
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if (asprintf(&s, "%.40s", vcs_git_summary(ctx->hist->hist))) {}
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overlay_add(&ctx->sheet_overlays, s, &ctx->aois,
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NULL, show_history_cb, ctx);
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}
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if (sheet->sch->title)
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overlay_add(&ctx->sheet_overlays, sheet->sch->title,
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&ctx->aois, NULL, close_subsheet, ctx);
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zoom_to_extents(ctx);
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}
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static bool go_up_sheet(struct gui_ctx *ctx)
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{
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struct gui_sheet *sheet;
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const struct sch_obj *obj;
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for (sheet = ctx->sheets; sheet; sheet = sheet->next)
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for (obj = sheet->sch->objs; obj; obj = obj->next)
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if (obj->type == sch_obj_sheet &&
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obj->u.sheet.sheet == ctx->curr_sheet->sch) {
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go_to_sheet(ctx, sheet);
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return 1;
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}
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return 0;
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}
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static bool go_prev_sheet(struct gui_ctx *ctx)
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{
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struct gui_sheet *sheet;
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for (sheet = ctx->sheets; sheet; sheet = sheet->next)
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if (sheet->next && sheet->next == ctx->curr_sheet) {
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go_to_sheet(ctx, sheet);
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return 1;
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}
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return 0;
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}
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static bool go_next_sheet(struct gui_ctx *ctx)
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{
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if (!ctx->curr_sheet->next)
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return 0;
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go_to_sheet(ctx, ctx->curr_sheet->next);
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return 1;
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}
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/* ----- Event handlers ---------------------------------------------------- */
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static gboolean motion_notify_event(GtkWidget *widget, GdkEventMotion *event,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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const struct gui_sheet *curr_sheet = ctx->curr_sheet;
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int x, y;
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ctx->curr_x = event->x;
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ctx->curr_y = event->y;
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canvas_coord(ctx, event->x, event->y, &x, &y);
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aoi_hover(curr_sheet->aois, x + curr_sheet->xmin, y + curr_sheet->ymin);
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pan_update(ctx, event->x, event->y);
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return TRUE;
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}
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static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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const struct gui_sheet *curr_sheet = ctx->curr_sheet;
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int x, y;
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canvas_coord(ctx, event->x, event->y, &x, &y);
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switch (event->button) {
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case 1:
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if (aoi_click(ctx->aois, event->x, event->y))
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break;
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aoi_click(curr_sheet->aois,
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x + curr_sheet->xmin, y + curr_sheet->ymin);
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break;
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case 2:
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pan_begin(ctx, event->x, event->y);
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break;
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case 3:
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break;
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}
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return TRUE;
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}
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static gboolean button_release_event(GtkWidget *widget, GdkEventButton *event,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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int x, y;
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canvas_coord(ctx, event->x, event->y, &x, &y);
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switch (event->button) {
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case 1:
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break;
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case 2:
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pan_end(ctx, event->x, event->y);
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break;
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case 3:
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break;
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}
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return TRUE;
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}
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static gboolean key_press_event(GtkWidget *widget, GdkEventKey *event,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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struct gui_sheet *sheet = ctx->curr_sheet;
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int x, y;
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canvas_coord(ctx, ctx->curr_x, ctx->curr_y, &x, &y);
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switch (event->keyval) {
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case '+':
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case '=':
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zoom_in(ctx, x, y);
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break;
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case '-':
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zoom_out(ctx, x, y);
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break;
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case '*':
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zoom_to_extents(ctx);
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break;
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case GDK_KEY_Home:
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if (sheet != ctx->sheets)
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go_to_sheet(ctx, ctx->sheets);
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break;
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case GDK_KEY_BackSpace:
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case GDK_KEY_Delete:
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go_up_sheet(ctx);
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break;
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case GDK_KEY_Page_Up:
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case GDK_KEY_KP_Page_Up:
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go_prev_sheet(ctx);
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break;
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case GDK_KEY_Page_Down:
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case GDK_KEY_KP_Page_Down:
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go_next_sheet(ctx);
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break;
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case GDK_KEY_Up:
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case GDK_KEY_KP_Up:
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case GDK_KEY_Down:
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case GDK_KEY_KP_Down:
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show_history(ctx);
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break;
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case GDK_KEY_q:
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gtk_main_quit();
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}
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return TRUE;
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}
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static gboolean scroll_event(GtkWidget *widget, GdkEventScroll *event,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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int x, y;
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canvas_coord(ctx, event->x, event->y, &x, &y);
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switch (event->direction) {
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case GDK_SCROLL_UP:
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zoom_in(ctx, x, y);
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break;
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case GDK_SCROLL_DOWN:
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zoom_out(ctx, x, y);
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break;
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default:
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/* ignore */;
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}
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return TRUE;
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}
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static void size_allocate_event(GtkWidget *widget, GdkRectangle *allocation,
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gpointer data)
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{
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struct gui_ctx *ctx = data;
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zoom_to_extents(ctx);
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}
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/* ----- AoI callbacks ----------------------------------------------------- */
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struct sheet_aoi_ctx {
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struct gui_ctx *gui_ctx;
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const struct sch_obj *obj;
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};
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static void select_subsheet(void *user)
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{
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const struct sheet_aoi_ctx *aoi_ctx = user;
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struct gui_ctx *ctx = aoi_ctx->gui_ctx;
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const struct sch_obj *obj = aoi_ctx->obj;
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struct gui_sheet *sheet;
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for (sheet = ctx->sheets; sheet; sheet = sheet->next)
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if (sheet->sch == obj->u.sheet.sheet) {
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go_to_sheet(ctx, sheet);
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return;
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}
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abort();
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}
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/* ----- Initialization ---------------------------------------------------- */
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static void add_sheet_aoi(struct gui_ctx *ctx, struct gui_sheet *parent,
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const struct sch_obj *obj)
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{
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struct sheet_aoi_ctx *aoi_ctx = alloc_type(struct sheet_aoi_ctx);
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aoi_ctx->gui_ctx = ctx;
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aoi_ctx->obj = obj;
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struct aoi aoi = {
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.x = obj->x,
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.y = obj->y,
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.w = obj->u.sheet.w,
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.h = obj->u.sheet.h,
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.click = select_subsheet,
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.user = aoi_ctx,
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};
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aoi_add(&parent->aois, &aoi);
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}
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static void mark_aois(struct gui_ctx *ctx, struct gui_sheet *sheet)
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{
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const struct sch_obj *obj;
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sheet->aois = NULL;
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for (obj = sheet->sch->objs; obj; obj = obj->next)
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switch (obj->type) {
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case sch_obj_sheet:
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add_sheet_aoi(ctx, sheet, obj);
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break;
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default:
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break;
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}
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}
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static void get_sheets(struct gui_ctx *ctx, const struct sheet *sheets)
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{
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const struct sheet *sheet;
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struct gui_sheet **next = &ctx->sheets;
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struct gui_sheet *gui_sheet;
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for (sheet = sheets; sheet; sheet = sheet->next) {
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gui_sheet = alloc_type(struct gui_sheet);
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gui_sheet->sch = sheet;
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render(ctx, gui_sheet);
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mark_aois(ctx, gui_sheet);
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*next = gui_sheet;
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next = &gui_sheet->next;
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}
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*next = NULL;
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ctx->curr_sheet = ctx->sheets;
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}
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static void add_hist(void *user, struct hist *h)
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{
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struct gui_ctx *ctx = user;
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struct gui_hist **anchor;
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for (anchor = &ctx->hist; *anchor; anchor = &(*anchor)->next);
|
|
*anchor = alloc_type(struct gui_hist);
|
|
(*anchor)->hist = h;
|
|
(*anchor)->next = NULL;
|
|
}
|
|
|
|
|
|
static void get_git(struct gui_ctx *ctx, const char *sch_name)
|
|
{
|
|
if (!vcs_git_try(sch_name))
|
|
return;
|
|
ctx->vcs_hist = vcs_git_hist(sch_name);
|
|
hist_iterate(ctx->vcs_hist, add_hist, ctx);
|
|
}
|
|
|
|
|
|
static struct sheet *parse_sheets(int n_args, char **args, bool recurse)
|
|
{
|
|
struct lib lib;
|
|
struct sch_ctx sch_ctx;
|
|
struct file sch_file;
|
|
int i;
|
|
|
|
sch_init(&sch_ctx, recurse);
|
|
file_open(&sch_file, args[n_args - 1], NULL);
|
|
|
|
lib_init(&lib);
|
|
for (i = 0; i != n_args - 1; i++)
|
|
lib_parse(&lib, args[i], &sch_file);
|
|
sch_parse(&sch_ctx, &sch_file, &lib);
|
|
file_close(&sch_file);
|
|
|
|
return sch_ctx.sheets;
|
|
}
|
|
|
|
|
|
int gui(unsigned n_args, char **args, bool recurse)
|
|
{
|
|
GtkWidget *window;
|
|
struct gui_ctx ctx = {
|
|
.zoom = 4, /* scale by 1 / 16 */
|
|
.panning = 0,
|
|
.hist = NULL,
|
|
.vcs_hist = NULL,
|
|
.sheet_overlays = NULL,
|
|
.vcs_overlays = NULL,
|
|
.aois = NULL,
|
|
};
|
|
|
|
get_sheets(&ctx, parse_sheets(n_args, args, recurse));
|
|
get_git(&ctx, args[n_args - 1]);
|
|
|
|
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
|
|
|
|
ctx.da = gtk_drawing_area_new();
|
|
gtk_container_add(GTK_CONTAINER(window), ctx.da);
|
|
|
|
g_signal_connect(G_OBJECT(ctx.da), "draw",
|
|
G_CALLBACK(on_draw_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "motion_notify_event",
|
|
G_CALLBACK(motion_notify_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "button_press_event",
|
|
G_CALLBACK(button_press_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "button_release_event",
|
|
G_CALLBACK(button_release_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "scroll_event",
|
|
G_CALLBACK(scroll_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "key_press_event",
|
|
G_CALLBACK(key_press_event), &ctx);
|
|
g_signal_connect(G_OBJECT(ctx.da), "size_allocate",
|
|
G_CALLBACK(size_allocate_event), &ctx);
|
|
|
|
g_signal_connect(window, "destroy",
|
|
G_CALLBACK(gtk_main_quit), NULL);
|
|
|
|
gtk_widget_set_can_focus(ctx.da, TRUE);
|
|
|
|
gtk_widget_set_events(ctx.da,
|
|
GDK_EXPOSE | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
|
|
GDK_KEY_PRESS_MASK |
|
|
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
|
|
GDK_SCROLL_MASK |
|
|
GDK_POINTER_MOTION_MASK);
|
|
|
|
// gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
|
|
// gtk_window_set_default_size(GTK_WINDOW(window), 400, 90);
|
|
gtk_window_set_title(GTK_WINDOW(window), "eeshow");
|
|
|
|
gtk_widget_show_all(window);
|
|
go_to_sheet(&ctx, ctx.sheets);
|
|
|
|
gtk_main();
|
|
|
|
return 0;
|
|
}
|