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eeshow/gui.c, README: PgUp/PgDn iterate through sheets in sequence

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This commit is contained in:
Werner Almesberger 2016-08-04 09:02:33 -03:00
parent ff17f0e492
commit 8abea1b890
2 changed files with 47 additions and 15 deletions
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2
eeshow/README
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@ -35,4 +35,6 @@ Key functions in GUI mode
* zoom to extents
Home go to the top sheet
Delete or Backspace go to the previous sheet
PgUp go to the previous sheet in sequence
PgDn go to the next sheet in sequence
Q quit the viewer

60
eeshow/gui.c
View File

@ -217,10 +217,24 @@ static void zoom_to_extents(struct gui_ctx *ctx)
/* ----- Navigate sheets --------------------------------------------------- */
static bool go_up_sheet(struct gui_ctx *ctx);
static void close_subsheet(void *user)
{
struct gui_ctx *ctx = user;
go_up_sheet(ctx);
}
static void go_to_sheet(struct gui_ctx *ctx, struct gui_sheet *sheet)
{
ctx->curr_sheet = sheet;
overlay_remove_all(&ctx->overlays);
if (sheet->sch->title)
overlay_add(&ctx->overlays, sheet->sch->title,
&ctx->aois, NULL, close_subsheet, ctx);
zoom_to_extents(ctx);
}
@ -241,6 +255,28 @@ static bool go_up_sheet(struct gui_ctx *ctx)
}
static bool go_prev_sheet(struct gui_ctx *ctx)
{
struct gui_sheet *sheet;
for (sheet = ctx->sheets; sheet; sheet = sheet->next)
if (sheet->next && sheet->next == ctx->curr_sheet) {
go_to_sheet(ctx, sheet);
return 1;
}
return 0;
}
static bool go_next_sheet(struct gui_ctx *ctx)
{
if (!ctx->curr_sheet->next)
return 0;
go_to_sheet(ctx, ctx->curr_sheet->next);
return 1;
}
/* ----- Event handlers ---------------------------------------------------- */
@ -338,6 +374,14 @@ static gboolean key_press_event(GtkWidget *widget, GdkEventKey *event,
case GDK_KEY_Delete:
go_up_sheet(ctx);
break;
case GDK_KEY_Page_Up:
case GDK_KEY_KP_Page_Up:
go_prev_sheet(ctx);
break;
case GDK_KEY_Page_Down:
case GDK_KEY_KP_Page_Down:
go_next_sheet(ctx);
break;
case GDK_KEY_q:
gtk_main_quit();
}
@ -384,14 +428,6 @@ struct sheet_aoi_ctx {
};
static void close_subsheet(void *user)
{
struct gui_ctx *ctx = user;
go_up_sheet(ctx);
}
static void select_subsheet(void *user)
{
const struct sheet_aoi_ctx *aoi_ctx = user;
@ -401,13 +437,7 @@ static void select_subsheet(void *user)
for (sheet = ctx->sheets; sheet; sheet = sheet->next)
if (sheet->sch == obj->u.sheet.sheet) {
const char *name;
go_to_sheet(ctx, sheet);
name = sheet->sch->title ? sheet->sch->title :
obj->u.sheet.name;
overlay_add(&ctx->overlays, name,
&ctx->aois, NULL, close_subsheet, ctx);
return;
}
abort();
@ -524,7 +554,7 @@ int gui(const struct sheet *sheets)
gtk_window_set_title(GTK_WINDOW(window), "eeshow");
gtk_widget_show_all(window);
zoom_to_extents(&ctx);
go_to_sheet(&ctx, ctx.sheets);
gtk_main();