[PATCH 3/3] shell: Implement "driver" method of fullsceen.

[zhiwen.wu at linux.intel.com]

From: Alex Wu <zhiwen.wu at linux.intel.com>

Using the switch_mode hook to change the display mode.
---
 src/shell.c |   34 +++++++++++++++++++++++++++++++++-
 1 files changed, 33 insertions(+), 1 deletions(-)

diff --git a/src/shell.c b/src/shell.c
index 5d2c239..c8cb41e 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -121,6 +121,7 @@ struct shell_surface {
 		struct weston_transform transform; /* matrix from x, y */
 		uint32_t framerate;
 		struct weston_surface *black_surface;
+		struct weston_mode *saved_mode;
 	} fullscreen;
 
 	struct weston_output *fullscreen_output;
@@ -372,6 +373,14 @@ static void
 shell_unset_fullscreen(struct shell_surface *shsurf)
 {
 	/* undo all fullscreen things here */
+	if (shsurf->fullscreen.saved_mode) {
+		shsurf->fullscreen_output->switch_mode(shsurf->fullscreen_output,
+				shsurf->fullscreen.saved_mode->width, 
+				shsurf->fullscreen.saved_mode->height, 
+				shsurf->fullscreen.saved_mode->refresh);
+		shsurf->fullscreen.saved_mode = NULL;
+	}
+
 	shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
 	shsurf->fullscreen.framerate = 0;
 	wl_list_remove(&shsurf->fullscreen.transform.link);
@@ -572,7 +581,23 @@ shell_configure_fullscreen(struct shell_surface *shsurf)
 		weston_surface_set_position(surface, output->x, output->y);
 		break;
 	case WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER:
-		break;
+		if (output->current->width == surface->geometry.width &&
+	            output->current->height == surface->geometry.height)
+			break;
+
+		shsurf->fullscreen.saved_mode = output->current;
+		if (output->switch_mode && 
+		    output->switch_mode(output,
+					surface->geometry.width,
+					surface->geometry.height,
+					shsurf->fullscreen.framerate) == 0) {
+			weston_surface_set_position(surface, output->x, output->y);
+			break;
+		} else {
+			shsurf->fullscreen.saved_mode = NULL;
+			fprintf(stderr, "failed to switch to mode (%dx%d, %u), fallback to FILL method.\n",
+				surface->geometry.width,  surface->geometry.height, shsurf->fullscreen.framerate);
+		}
 	case WL_SHELL_SURFACE_FULLSCREEN_METHOD_FILL:
 		break;
 	default:
@@ -774,6 +799,12 @@ destroy_shell_surface(struct wl_resource *resource)
 	if (shsurf->surface)
 		wl_list_remove(&shsurf->surface_destroy_listener.link);
 
+	if (shsurf->fullscreen.saved_mode)
+		shsurf->fullscreen_output->switch_mode(shsurf->fullscreen_output,
+				                       shsurf->fullscreen.saved_mode->width, 
+						       shsurf->fullscreen.saved_mode->height, 
+						       shsurf->fullscreen.saved_mode->refresh);
+
 	wl_list_remove(&shsurf->link);
 	free(shsurf);
 }
@@ -841,6 +872,7 @@ shell_get_shell_surface(struct wl_client *client,
 	shsurf->fullscreen.type = WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT;
 	shsurf->fullscreen.framerate = 0;
 	shsurf->fullscreen.black_surface = NULL;
+	shsurf->fullscreen.saved_mode = NULL;
 	wl_list_init(&shsurf->fullscreen.transform.link);
 
 	shsurf->surface_destroy_listener.func = shell_handle_surface_destroy;
-- 
1.7.5.4