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-rw-r--r--textscreen/txt_main.h10
-rw-r--r--textscreen/txt_scrollpane.c36
2 files changed, 38 insertions, 8 deletions
diff --git a/textscreen/txt_main.h b/textscreen/txt_main.h
index add30fa3..601548e5 100644
--- a/textscreen/txt_main.h
+++ b/textscreen/txt_main.h
@@ -34,10 +34,12 @@
// Special keypress values that correspond to mouse button clicks
-#define TXT_MOUSE_BASE 0x10000
-#define TXT_MOUSE_LEFT (TXT_MOUSE_BASE + 0)
-#define TXT_MOUSE_RIGHT (TXT_MOUSE_BASE + 1)
-#define TXT_MOUSE_MIDDLE (TXT_MOUSE_BASE + 2)
+#define TXT_MOUSE_BASE 0x10000
+#define TXT_MOUSE_LEFT (TXT_MOUSE_BASE + 0)
+#define TXT_MOUSE_RIGHT (TXT_MOUSE_BASE + 1)
+#define TXT_MOUSE_MIDDLE (TXT_MOUSE_BASE + 2)
+#define TXT_MOUSE_SCROLLUP (TXT_MOUSE_BASE + 3)
+#define TXT_MOUSE_SCROLLDOWN (TXT_MOUSE_BASE + 4)
#define TXT_MAX_MOUSE_BUTTONS 16
// Screen size
diff --git a/textscreen/txt_scrollpane.c b/textscreen/txt_scrollpane.c
index 17c9bcbf..903c7910 100644
--- a/textscreen/txt_scrollpane.c
+++ b/textscreen/txt_scrollpane.c
@@ -416,6 +416,33 @@ static void TXT_ScrollPaneMousePress(TXT_UNCAST_ARG(scrollpane),
scrollbars = NeedsScrollbars(scrollpane);
+ if (b == TXT_MOUSE_SCROLLUP)
+ {
+ if (scrollbars & SCROLLBAR_VERTICAL)
+ {
+ --scrollpane->y;
+ }
+ else if (scrollbars & SCROLLBAR_HORIZONTAL)
+ {
+ --scrollpane->x;
+ }
+
+ return;
+ }
+ else if (b == TXT_MOUSE_SCROLLDOWN)
+ {
+ if (scrollbars & SCROLLBAR_VERTICAL)
+ {
+ ++scrollpane->y;
+ }
+ else if (scrollbars & SCROLLBAR_HORIZONTAL)
+ {
+ ++scrollpane->x;
+ }
+
+ return;
+ }
+
rel_x = x - scrollpane->widget.x;
rel_y = y - scrollpane->widget.y;
@@ -433,14 +460,15 @@ static void TXT_ScrollPaneMousePress(TXT_UNCAST_ARG(scrollpane),
else
{
int range = FullWidth(scrollpane) - scrollpane->w;
+ int bar_max = scrollpane->w - 3;
- scrollpane->x = ((rel_x - 1) * range) / (scrollpane->w - 3);
+ scrollpane->x = ((rel_x - 1) * range + (bar_max / 2)) / bar_max;
}
return;
}
- // Click on the horizontal scrollbar?
+ // Click on the vertical scrollbar?
if ((scrollbars & SCROLLBAR_VERTICAL) && rel_x == scrollpane->w)
{
if (rel_y == 0)
@@ -454,8 +482,9 @@ static void TXT_ScrollPaneMousePress(TXT_UNCAST_ARG(scrollpane),
else
{
int range = FullHeight(scrollpane) - scrollpane->h;
+ int bar_max = scrollpane->h - 3;
- scrollpane->y = ((rel_y - 1) * range) / (scrollpane->h - 3);
+ scrollpane->y = ((rel_y - 1) * range + (bar_max / 2)) / bar_max;
}
return;
@@ -465,7 +494,6 @@ static void TXT_ScrollPaneMousePress(TXT_UNCAST_ARG(scrollpane),
{
TXT_WidgetMousePress(scrollpane->child, x, y, b);
}
-
}
static void TXT_ScrollPaneLayout(TXT_UNCAST_ARG(scrollpane))