liboda: Add oda_movewin()expt

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 73 insertions, 0 deletions

diff --git a/lib/liboda/include/liboda/oda.h b/lib/liboda/include/liboda/oda.h
index 13474d5..9d96f2f 100644
--- a/lib/liboda/include/liboda/oda.h
+++ b/lib/liboda/include/liboda/oda.h
@@ -83,6 +83,22 @@ struct oda_wattr {
 };
 
 /*
+ * Arguments for oda_movewin() are stored
+ * within this structure to minimize the
+ * number of arguments within the function
+ * signature.
+ *
+ * @wp: Window to be moved
+ * @to_x: X position to move window to
+ * @to_y: Y position to move window to
+ */
+struct oda_movewin {
+    struct oda_window *wp;
+    odapos_t to_x;
+    odapos_t to_y;
+};
+
+/*
  * A pixel point that can be plotted
  * onto a window.
  *
@@ -103,6 +119,7 @@ int oda_reqwin(struct oda_wattr *params, struct oda_window **res);
 int oda_termwin(struct oda_state *state, struct oda_window *win);
 
 int oda_plotwin(struct oda_state *state, const struct oda_point *point);
+int oda_movewin(struct oda_state *state, struct oda_movewin *params);
 int oda_start_win(struct oda_state *state, struct oda_window *win);
 
 int oda_init(struct oda_state *res);
diff --git a/lib/liboda/src/window.c b/lib/liboda/src/window.c
index 8e91fac..216b106 100644
--- a/lib/liboda/src/window.c
+++ b/lib/liboda/src/window.c
@@ -35,6 +35,7 @@
 #include <liboda/odavar.h>
 #include <liboda/types.h>
 #include <libgfx/gfx.h>
+#include <libgfx/draw.h>
 
 /*
  * The window cache is used to reduce how many
@@ -341,6 +342,61 @@ oda_reqwin(struct oda_wattr *params, struct oda_window **res)
 }
 
 /*
+ * Move a window to a new position on the
+ * screen.
+ *
+ * @state: ODA state pointer
+ * @params: Arguments to this function
+ */
+int
+oda_movewin(struct oda_state *state, struct oda_movewin *params)
+{
+    struct oda_window *win;
+    struct gfx_shape *wsurf;
+    struct gfx_region r;
+    odadimm_t w, h;
+    odapos_t x, y, x_f, y_f;
+    odapos_t to_x, to_y;
+    uint32_t i = 0;
+    int error;
+
+    /* Make sure arguments are valid */
+    if (state == NULL || params == NULL) {
+        return -EINVAL;
+    }
+
+    /* We need the window */
+    if ((win = params->wp) == NULL) {
+        return -EINVAL;
+    }
+
+    /* Verify state cookie */
+    if ((error = oda_cookie_verify(state)) != 0) {
+        return error;
+    }
+
+    wsurf = &win->surface;
+    to_x = params->to_x;
+    to_y = params->to_y;
+
+    r.x = wsurf->x;
+    r.y = wsurf->y;
+    r.width = wsurf->width;
+    r.height = wsurf->height;
+
+    /*
+     * We will copy the window to the new location and
+     * fill where the old window was with GFX_BLACK.
+     *
+     * TODO: Handle overlapping of windows
+     */
+    gfx_copy_region(&state->gctx, &r, to_x, to_y);
+    wsurf->x = to_x;
+    wsurf->y = to_y;
+    return 0;
+}
+
+/*
  * Register a window into the current ODA state.
  * Everytime a compositor requests a window, we
  * must keep track of it.