Changeset 1388f7f0 in mainline

Timestamp:

2020-02-21T10:50:48Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

265989d

Parents:

6c2aba3

git-author:

Jiri Svoboda <jiri@…> (2020-02-19 19:38:03)

git-committer:

Jiri Svoboda <jiri@…> (2020-02-21 10:50:48)

Message:

Support absolute movement events from input device

Location:

uspace

Files:

• lib/gfx/include/gfx/coord.h (modified) (1 diff)
• lib/gfx/src/coord.c (modified) (2 diffs)
• lib/gfx/test/coord.c (modified) (1 diff)
• srv/hid/display/input.c (modified) (1 diff)
• srv/hid/display/seat.c (modified) (2 diffs)
• srv/hid/display/types/display/ptd_event.h (modified) (2 diffs)

uspace/lib/gfx/include/gfx/coord.h

@@ -43 +43 @@
 extern void gfx_coord2_subtract(gfx_coord2_t *, gfx_coord2_t *, gfx_coord2_t *);
 extern void gfx_coord2_clip(gfx_coord2_t *, gfx_rect_t *, gfx_coord2_t *);
+extern void gfx_coord2_project(gfx_coord2_t *, gfx_rect_t *, gfx_rect_t *,
+    gfx_coord2_t *);
 extern void gfx_span_points_sort(gfx_coord_t, gfx_coord_t, gfx_coord_t *,
     gfx_coord_t *);

uspace/lib/gfx/src/coord.c

@@ -62 +62 @@
 }
 
+/** Clip point coordinates to be within a rectangle.
+ *
+ * @param a Pixel coordinates
+ * @param clip Clipping rectangle
+ * @param d Place to store clipped coordinates
+ */
 void gfx_coord2_clip(gfx_coord2_t *a, gfx_rect_t *clip, gfx_coord2_t *d)
 {
@@ -74 +80 @@
         d->x = max(clip->p0.x, t.x);
         d->y = max(clip->p0.y, t.y);
+}
+
+/** Transform coordinates via rectangle to rectangle projection.
+ *
+ * Transform pixel coordinate via a projection that maps one rectangle
+ * onto another rectangle. The source rectangle must have both dimensions
+ * greater than one.
+ *
+ * @param a Pixel coordinates
+ * @param srect Source rectangle
+ * @param drect Destination rectangle
+ * @param d Place to store resulting coordinates.
+ */
+void gfx_coord2_project(gfx_coord2_t *a, gfx_rect_t *srect, gfx_rect_t *drect,
+    gfx_coord2_t *d)
+{
+        gfx_rect_t sr;
+        gfx_rect_t dr;
+
+        gfx_rect_points_sort(srect, &sr);
+        gfx_rect_points_sort(drect, &dr);
+
+        d->x = dr.p0.x + (a->x - sr.p0.x) * (dr.p1.x - dr.p0.x - 1) /
+            (sr.p1.x - sr.p0.x - 1);
+        d->y = dr.p0.y + (a->y - sr.p0.y) * (dr.p1.y - dr.p0.y - 1) /
+            (sr.p1.y - sr.p0.y - 1);
 }
 

uspace/lib/gfx/test/coord.c

@@ -131 +131 @@
 }
 
+/** gfx_coord2_project projects pixel from one rectangle to another  */
+PCUT_TEST(coord2_project)
+{
+        gfx_coord2_t a, d;
+        gfx_rect_t srect, drect;
+
+        srect.p0.x = 10;
+        srect.p0.y = 10;
+        srect.p1.x = 20 + 1;
+        srect.p1.y = 20 + 1;
+
+        drect.p0.x = 100;
+        drect.p0.y = 100;
+        drect.p1.x = 200 + 1;
+        drect.p1.y = 200 + 1;
+
+        a.x = 10;
+        a.y = 10;
+        gfx_coord2_project(&a, &srect, &drect, &d);
+        PCUT_ASSERT_INT_EQUALS(100, d.x);
+        PCUT_ASSERT_INT_EQUALS(100, d.y);
+
+        a.x = 15;
+        a.y = 15;
+        gfx_coord2_project(&a, &srect, &drect, &d);
+        PCUT_ASSERT_INT_EQUALS(150, d.x);
+        PCUT_ASSERT_INT_EQUALS(150, d.y);
+
+        a.x = 12;
+        a.y = 16;
+        gfx_coord2_project(&a, &srect, &drect, &d);
+        PCUT_ASSERT_INT_EQUALS(120, d.x);
+        PCUT_ASSERT_INT_EQUALS(160, d.y);
+
+        a.x = 20;
+        a.y = 20;
+        gfx_coord2_project(&a, &srect, &drect, &d);
+        PCUT_ASSERT_INT_EQUALS(200, d.x);
+        PCUT_ASSERT_INT_EQUALS(200, d.y);
+}
+
 /** gfx_rect_translate should translate rectangle */
 PCUT_TEST(rect_translate)

uspace/srv/hid/display/input.c

@@ -97 +97 @@
     unsigned max_x, unsigned max_y)
 {
-        printf("ds_input_ev_abs_move x=%u y=%u mx=%u my=%u\n",
-            x, y, max_x, max_y);
-        return EOK;
+        ds_display_t *disp = (ds_display_t *) input->user;
+        ptd_event_t event;
+
+        event.type = PTD_ABS_MOVE;
+        event.apos.x = x;
+        event.apos.y = y;
+        event.abounds.p0.x = 0;
+        event.abounds.p0.y = 0;
+        event.abounds.p1.x = max_x + 1;
+        event.abounds.p1.y = max_y + 1;
+
+        return ds_display_post_ptd_event(disp, &event);
 }
 

uspace/srv/hid/display/seat.c

@@ -256 +256 @@
  * @return EOK on success or an error code
  */
+#include <stdio.h>
 errno_t ds_seat_post_ptd_event(ds_seat_t *seat, ptd_event_t *event)
 {
@@ -306 +307 @@
         }
 
+        if (event->type == PTD_ABS_MOVE) {
+                /*
+                 * Project input device area onto display area. Technically
+                 * we probably want to project onto the area of a particular
+                 * display device. The tricky part is figuring out which
+                 * display device the input device is associated with.
+                 */
+                gfx_coord2_project(&event->apos, &event->abounds,
+                    &disp->rect, &npos);
+
+                gfx_coord2_clip(&npos, &disp->rect, &npos);
+
+                (void) ds_seat_clear_pointer(seat);
+                seat->pntpos = npos;
+
+                pevent.pos_id = 0;
+                pevent.type = POS_UPDATE;
+                pevent.btn_num = 0;
+                pevent.hpos = seat->pntpos.x;
+                pevent.vpos = seat->pntpos.y;
+
+                rc = ds_seat_post_pos_event(seat, &pevent);
+                if (rc != EOK)
+                        return rc;
+
+                (void) ds_seat_draw_pointer(seat);
+        }
+
         return EOK;
 }

uspace/srv/hid/display/types/display/ptd_event.h

@@ -40 +40 @@
 typedef enum {
         PTD_MOVE,
+        PTD_ABS_MOVE,
         PTD_PRESS,
         PTD_RELEASE
@@ -51 +52 @@
         /** Relative move vector for PTD_MOVE */
         gfx_coord2_t dmove;
+        /** Absolute position for PTD_ABS_MOVE */
+        gfx_coord2_t apos;
+        /** Absolute position bounds for PTD_ABS_MOVE */
+        gfx_rect_t abounds;
 } ptd_event_t;