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authorWerner Almesberger <werner@almesberger.net>2016-08-18 12:41:12 -0300
committerWerner Almesberger <werner@almesberger.net>2016-08-18 12:41:12 -0300
commitc03b6c294cd209703b54cccc236258acfcad60b8 (patch)
treec329c1a87dd49c575812869208f00ad8363a0e07 /gui/render.c
parentb0ce7932b5bc8ec04120146cac8ca28931b33301 (diff)
downloadeeshow-c03b6c294cd209703b54cccc236258acfcad60b8.tar.gz
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eeshow/gui/gui.c: move rendering to render.c
Diffstat (limited to 'gui/render.c')
-rw-r--r--gui/render.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/gui/render.c b/gui/render.c
new file mode 100644
index 0000000..bbdcc94
--- /dev/null
+++ b/gui/render.c
@@ -0,0 +1,154 @@
+/*
+ * gui/render.c - Render schematics and GUI elements
+ *
+ * Written 2016 by Werner Almesberger
+ * Copyright 2016 by Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <stddef.h>
+#include <stdbool.h>
+
+#include <cairo/cairo.h>
+#include <gtk/gtk.h>
+
+#include "misc/util.h"
+#include "gfx/cro.h"
+#include "gfx/gfx.h"
+#include "kicad/sch.h"
+#include "kicad/delta.h"
+#include "gfx/diff.h"
+#include "gui/aoi.h"
+#include "gui/over.h"
+#include "gui/common.h"
+
+
+#define VCS_OVERLAYS_X 5
+#define VCS_OVERLAYS_Y 5
+
+#define SHEET_OVERLAYS_X -10
+#define SHEET_OVERLAYS_Y 10
+
+
+/* ----- Helper functions -------------------------------------------------- */
+
+
+void redraw(const struct gui_ctx *ctx)
+{
+ gtk_widget_queue_draw(ctx->da);
+}
+
+
+/* ----- Rendering --------------------------------------------------------- */
+
+
+static void hack(const struct gui_ctx *ctx, cairo_t *cr)
+{
+ const struct gui_sheet *new = ctx->curr_sheet;
+ const struct gui_sheet *old = find_corresponding_sheet(
+ ctx->old_hist->sheets, ctx->new_hist->sheets, ctx->curr_sheet);
+
+ diff_to_canvas(cr, ctx->x, ctx->y, 1.0 / (1 << ctx->zoom),
+ old->gfx_ctx, new->gfx_ctx);
+}
+
+
+static gboolean on_draw_event(GtkWidget *widget, cairo_t *cr,
+ gpointer user_data)
+{
+ const struct gui_ctx *ctx = user_data;
+ const struct gui_sheet *sheet = ctx->curr_sheet;
+ GtkAllocation alloc;
+ float f = 1.0 / (1 << ctx->zoom);
+ int x, y;
+
+ gtk_widget_get_allocation(ctx->da, &alloc);
+ x = -(sheet->xmin + ctx->x) * f + alloc.width / 2;
+ y = -(sheet->ymin + ctx->y) * f + alloc.height / 2;
+
+ cro_canvas_prepare(cr);
+ if (!ctx->old_hist) {
+ cro_canvas_draw(sheet->gfx_ctx, cr, x, y, f);
+ } else {
+#if 0
+ /* @@@ fix geometry later */
+ cro_canvas_draw(ctx->delta_ab.gfx_ctx, cr, x, y, f);
+ cro_canvas_draw(ctx->delta_a.gfx_ctx, cr, x, y, f);
+ cro_canvas_draw(ctx->delta_b.gfx_ctx, cr, x, y, f);
+#endif
+ hack(ctx, cr);
+ }
+
+ overlay_draw_all(ctx->sheet_overlays, cr,
+ SHEET_OVERLAYS_X, SHEET_OVERLAYS_Y);
+ overlay_draw_all_d(ctx->hist_overlays, cr,
+ VCS_OVERLAYS_X,
+ VCS_OVERLAYS_Y + (ctx->showing_history ? ctx->hist_y_offset : 0),
+ 0, 1);
+ overlay_draw_all(ctx->pop_overlays, cr, ctx->pop_x, ctx->pop_y);
+
+ return FALSE;
+}
+
+
+void render_sheet(struct gui_sheet *sheet)
+{
+ char *argv[] = { "gui", NULL };
+
+ gfx_init(&cro_canvas_ops, 1, argv);
+ sch_render(sheet->sch);
+ cro_canvas_end(gfx_ctx,
+ &sheet->w, &sheet->h, &sheet->xmin, &sheet->ymin);
+ sheet->gfx_ctx = gfx_ctx;
+ sheet->rendered = 1;
+ // gfx_end();
+}
+
+
+void render_delta(struct gui_ctx *ctx)
+{
+#if 0
+ /* @@@ needs updating for curr/last vs. new/old */
+ struct sheet *sch_a, *sch_b, *sch_ab;
+ const struct gui_sheet *a = ctx->curr_sheet;
+ const struct gui_sheet *b = find_corresponding_sheet(
+ ctx->last_hist->sheets, ctx->curr_hist->sheets, ctx->curr_sheet);
+
+ sch_a = alloc_type(struct sheet);
+ sch_b = alloc_type(struct sheet);
+ sch_ab = alloc_type(struct sheet);
+
+ delta(a->sch, b->sch, sch_a, sch_b, sch_ab);
+ ctx->delta_a.sch = sch_a,
+ ctx->delta_b.sch = sch_b,
+ ctx->delta_ab.sch = sch_ab,
+
+ render_sheet(&ctx->delta_a);
+ render_sheet(&ctx->delta_b);
+ render_sheet(&ctx->delta_ab);
+
+ cro_color_override(ctx->delta_ab.gfx_ctx, COLOR_LIGHT_GREY);
+ cro_color_override(ctx->delta_a.gfx_ctx, COLOR_RED);
+ cro_color_override(ctx->delta_b.gfx_ctx, COLOR_GREEN2);
+
+ // @@@ clean up when leaving sheet
+#endif
+ struct gui_sheet *b = find_corresponding_sheet(
+ ctx->old_hist->sheets, ctx->new_hist->sheets, ctx->curr_sheet);
+
+ if (!b->rendered) {
+ render_sheet(b);
+ mark_aois(ctx, b);
+ }
+}
+
+
+void render_setup(struct gui_ctx *ctx)
+{
+ g_signal_connect(G_OBJECT(ctx->da), "draw",
+ G_CALLBACK(on_draw_event), ctx);
+}