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eeshow/gui.c: delete/backspace return to previous sheet

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This commit is contained in:
Werner Almesberger 2016-08-03 12:34:33 -03:00
parent 2135f8ffc9
commit 7630325ae6
1 changed files with 19 additions and 5 deletions
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24
eeshow/gui.c
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@ -50,6 +50,8 @@ struct gui_sheet {
struct aoi *aois; /* areas of interest */
struct gui_sheet *prev; /* previous in stack */
struct gui_sheet *next;
};
@ -67,7 +69,7 @@ struct gui_ctx {
const struct aoi *aoi_hovering; /* hovering over this aoi */
const struct gui_sheet *curr_sheet;
struct gui_sheet *curr_sheet;
/* current sheet */
struct gui_sheet *sheets;
};
@ -273,7 +275,7 @@ static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event,
int x, y;
canvas_coord(ctx, event->x, event->y, &x, &y);
fprintf(stderr, "button press\n");
switch (event->button) {
case 1:
aoi_click(ctx, x, y);
@ -295,7 +297,7 @@ static gboolean button_release_event(GtkWidget *widget, GdkEventButton *event,
int x, y;
canvas_coord(ctx, event->x, event->y, &x, &y);
fprintf(stderr, "button release\n");
switch (event->button) {
case 1:
break;
@ -313,9 +315,11 @@ static gboolean key_press_event(GtkWidget *widget, GdkEventKey *event,
gpointer data)
{
struct gui_ctx *ctx = data;
struct gui_sheet *sheet = ctx->curr_sheet;
int x, y;
canvas_coord(ctx, ctx->curr_x, ctx->curr_y, &x, &y);
switch (event->keyval) {
case '+':
case '=':
@ -324,6 +328,14 @@ static gboolean key_press_event(GtkWidget *widget, GdkEventKey *event,
case '-':
zoom_out(ctx, x, y);
break;
case GDK_KEY_BackSpace:
case GDK_KEY_Delete:
if (sheet->prev) {
ctx->curr_sheet = sheet->prev;
sheet->prev = NULL;
gtk_widget_queue_draw(ctx->da);
}
break;
case GDK_KEY_q:
gtk_main_quit();
}
@ -358,11 +370,12 @@ static gboolean scroll_event(GtkWidget *widget, GdkEventScroll *event,
static void select_subsheet(struct gui_ctx *ctx, void *user)
{
const struct sch_obj *obj = user;
const struct gui_sheet *sheet;
struct gui_sheet *sheet;
fprintf(stderr, "%s\n", obj->u.sheet.name);
for (sheet = ctx->sheets; sheet; sheet = sheet->next)
if (sheet->sch == obj->u.sheet.sheet) {
sheet->prev = ctx->curr_sheet;
ctx->curr_sheet = sheet;
gtk_widget_queue_draw(ctx->da);
return;
@ -409,8 +422,9 @@ static void get_sheets(struct gui_ctx *ctx, const struct sheet *sheets)
for (sheet = sheets; sheet; sheet = sheet->next) {
gui_sheet = alloc_type(struct gui_sheet);
gui_sheet->sch = sheet;
render(ctx, gui_sheet);
gui_sheet->prev = NULL;
render(ctx, gui_sheet);
mark_aois(gui_sheet);
*next = gui_sheet;