Changeset 1026cc4 in mainline for uspace/app/uidemo/uidemo.c

Timestamp:

2022-03-20T19:51:09Z (2 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

26c90dd

Parents:

5ef85c0

Message:

Clicking scrollbar through to generate page up / page down

File:

• uspace/app/uidemo/uidemo.c (modified) (6 diffs)

uspace/app/uidemo/uidemo.c

@@ -89 +89 @@
 static void scrollbar_up(ui_scrollbar_t *, void *);
 static void scrollbar_down(ui_scrollbar_t *, void *);
+static void scrollbar_page_up(ui_scrollbar_t *, void *);
+static void scrollbar_page_down(ui_scrollbar_t *, void *);
 static void scrollbar_moved(ui_scrollbar_t *, void *, gfx_coord_t);
 
@@ -94 +96 @@
         .up = scrollbar_up,
         .down = scrollbar_down,
+        .page_up = scrollbar_page_up,
+        .page_down = scrollbar_page_down,
         .moved = scrollbar_moved
 };
@@ -232 +236 @@
 static void scrollbar_up(ui_scrollbar_t *scrollbar, void *arg)
 {
-        ui_demo_t *demo = (ui_demo_t *) arg;
         gfx_coord_t pos;
-        char *str;
-        errno_t rc;
-        int rv;
 
         pos = ui_scrollbar_get_pos(scrollbar);
@@ -242 +242 @@
 
         pos = ui_scrollbar_get_pos(scrollbar);
-
-        rv = asprintf(&str, "Scrollbar: %d of %d", (int) pos,
-            ui_scrollbar_move_length(scrollbar));
-        if (rv < 0) {
-                printf("Out of memory.\n");
-                return;
-        }
-
-        rc = ui_entry_set_text(demo->entry, str);
-        if (rc != EOK)
-                printf("Error changing entry text.\n");
-        (void) ui_entry_paint(demo->entry);
-
-        free(str);
+        scrollbar_moved(scrollbar, arg, pos);
 }
 
@@ -265 +252 @@
 static void scrollbar_down(ui_scrollbar_t *scrollbar, void *arg)
 {
-        ui_demo_t *demo = (ui_demo_t *) arg;
         gfx_coord_t pos;
-        char *str;
-        errno_t rc;
-        int rv;
 
         pos = ui_scrollbar_get_pos(scrollbar);
@@ -275 +258 @@
 
         pos = ui_scrollbar_get_pos(scrollbar);
-
-        rv = asprintf(&str, "Scrollbar: %d of %d", (int) pos,
-            ui_scrollbar_move_length(scrollbar));
-        if (rv < 0) {
-                printf("Out of memory.\n");
-                return;
-        }
-
-        rc = ui_entry_set_text(demo->entry, str);
-        if (rc != EOK)
-                printf("Error changing entry text.\n");
-        (void) ui_entry_paint(demo->entry);
-
-        free(str);
+        scrollbar_moved(scrollbar, arg, pos);
+}
+
+/** Scrollbar page up event.
+ *
+ * @param scrollbar Scrollbar
+ * @param arg Argument (demo)
+ */
+static void scrollbar_page_up(ui_scrollbar_t *scrollbar, void *arg)
+{
+        gfx_coord_t pos;
+
+        pos = ui_scrollbar_get_pos(scrollbar);
+        ui_scrollbar_set_pos(scrollbar, pos -
+            ui_scrollbar_through_length(scrollbar) / 4);
+
+        pos = ui_scrollbar_get_pos(scrollbar);
+        scrollbar_moved(scrollbar, arg, pos);
+}
+
+/** Scrollbar page down event.
+ *
+ * @param scrollbar Scrollbar
+ * @param arg Argument (demo)
+ */
+static void scrollbar_page_down(ui_scrollbar_t *scrollbar, void *arg)
+{
+        gfx_coord_t pos;
+
+        pos = ui_scrollbar_get_pos(scrollbar);
+        ui_scrollbar_set_pos(scrollbar, pos +
+            ui_scrollbar_through_length(scrollbar) / 4);
+
+        pos = ui_scrollbar_get_pos(scrollbar);
+        scrollbar_moved(scrollbar, arg, pos);
 }