In order to work out the direction to warp the pointer to automatically, as
well as setting the direction automatically, this helper function will
return the direction the pointer is in, based on the quadrant of the window.
---
fvwm/move_resize.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 82 insertions(+), 0 deletions(-)
diff --git a/fvwm/move_resize.c b/fvwm/move_resize.c
index 2acb493..50f19d8 100644
--- a/fvwm/move_resize.c
+++ b/fvwm/move_resize.c
@@ -3138,6 +3138,88 @@ void CMD_XorPixmap(F_CMD_ARGS)
/* ----------------------------- resizing code ----------------------------- */
+/* Given a mouse location within a window context, return the direction the
+ * window could be resized in, based on the window quadrant. This is the same
+ * as the quadrants drawn by the rubber-band, if "ResizeOpaque" has not been
+ * set.
+ */
+static direction_t __resize_get_dir_from_resize_quadrant(
+ int x_off, int y_off, int px, int py)
+{
+ direction_t dir = DIR_NONE;
+ int tx;
+ int ty;
+ int dx;
+ int dy;
+
+
+ if (px < 0 || x_off < 0 || py < 0 || y_off < 0)
+ {
+ return dir;
+ }
+
+ /* Rough quadrants per window. 3x3. */
+ tx = (x_off / 3) - 1;
+ ty = (y_off / 3) - 1;
+
+ dx = x_off - px;
+ dy = y_off - py;
+
+ if (px < tx)
+ {
+ /* Far left of window. Quadrants of NW, W, SW. */
+ if (py < ty)
+ {
+ /* North-West direction. */
+ dir = DIR_NW;
+ }
+ else if (dy < ty)
+ {
+ /* South-West direction. */
+ dir = DIR_SW;
+ }
+ else
+ {
+ /* West direction. */
+ dir = DIR_W;
+ }
+ }
+ else if (dx < tx)
+ {
+ /* Far right of window. Quadrants NE, E, SE. */
+ if (py < ty)
+ {
+ /* North-East direction. */
+ dir = DIR_NE;
+ }
+ else if (dy < ty)
+ {
+ /* South-East direction */
+ dir = DIR_SE;
+ }
+ else
+ {
+ /* East direction. */
+ dir = DIR_E;
+ }
+ }
+ else
+ {
+ if (py < ty)
+ {
+ /* North direction. */
+ dir = DIR_N;
+ }
+ else if (dy < ty)
+ {
+ /* South direction. */
+ dir = DIR_S;
+ }
+ }
+
+ return dir;
+}
+
static void __resize_get_dir_from_window(
int *ret_xmotion, int *ret_ymotion, FvwmWindow *fw, Window context_w)
{
--
1.7.5.1
