[PATCH 1/2 weston] clickdot: Reposition dot on resize.

[Scott Moreau]

Attempt to keep dot in the same position proportionate to the surface's size.
---
 clients/clickdot.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/clients/clickdot.c b/clients/clickdot.c
index c74bc91..7358656 100644
--- a/clients/clickdot.c
+++ b/clients/clickdot.c
@@ -44,6 +44,7 @@ struct clickdot {
 
 	struct {
 		int32_t x, y;
+		float rw, rh;
 	} dot;
 
 	struct {
@@ -136,7 +137,7 @@ redraw_handler(struct widget *widget, void *data)
 	struct clickdot *clickdot = data;
 	cairo_surface_t *surface;
 	cairo_t *cr;
-	struct rectangle allocation;
+	struct rectangle allocation, window;
 
 	widget_get_allocation(clickdot->widget, &allocation);
 
@@ -154,6 +155,10 @@ redraw_handler(struct widget *widget, void *data)
 
 	draw_line(clickdot, cr, &allocation);
 
+	window_get_allocation(clickdot->window, &window);
+	clickdot->dot.x = window.width * clickdot->dot.rw;
+	clickdot->dot.y = window.height * clickdot->dot.rh;
+
 	cairo_translate(cr, clickdot->dot.x + 0.5, clickdot->dot.y + 0.5);
 	cairo_set_line_width(cr, 1.0);
 	cairo_set_source_rgb(cr, 0.1, 0.9, 0.9);
@@ -202,9 +207,15 @@ button_handler(struct widget *widget,
 	       enum wl_pointer_button_state state, void *data)
 {
 	struct clickdot *clickdot = data;
+	struct rectangle allocation;
 
-	if (state == WL_POINTER_BUTTON_STATE_PRESSED && button == BTN_LEFT)
+	window_get_allocation(clickdot->window, &allocation);
+
+	if (state == WL_POINTER_BUTTON_STATE_PRESSED && button == BTN_LEFT) {
 		input_get_position(input, &clickdot->dot.x, &clickdot->dot.y);
+		clickdot->dot.rw = (float) clickdot->dot.x / allocation.width;
+		clickdot->dot.rh = (float) clickdot->dot.y / allocation.height;
+	}
 
 	widget_schedule_redraw(widget);
 }
@@ -270,6 +281,8 @@ clickdot_create(struct display *display)
 	widget_set_leave_handler(clickdot->widget, leave_handler);
 
 	widget_schedule_resize(clickdot->widget, 500, 400);
+	clickdot->dot.rw = 0.5;
+	clickdot->dot.rh = 0.5;
 	clickdot->dot.x = 250;
 	clickdot->dot.y = 200;
 	clickdot->line.x = -1;
-- 
1.7.11.7