From 5c3c97aecadd59231e3b99a021080b019e1bbea4 Mon Sep 17 00:00:00 2001 From: Nobuhiko Tanibata Date: Wed, 9 Dec 2015 15:39:26 +0900 Subject: [PATCH 2/7] ivi-shell: multi screen support to calcuration of a mask of weston_surface. A weston_surface is transformed to multi screen coordinate, global coordinate by matrix:m now. Additionally, a mask needs to be calucated, taking account into, - multi screen coordination: a destination rectangle of layer in the coordination is easily calcurated by adding weston_output.{x,y} in simple. This is because there is no scaled and rotated transformation. - intersect inside of a screen the layer is assigned to. This is because overlapped region of weston surface in another screen shall not be displayed according to ivi use case. Signed-off-by: Nobuhiko Tanibata Reviewed-by: Pekka Paalanen --- ivi-shell/ivi-layout.c | 36 +++++++++++++++++++++++++++++++----- 1 file changed, 31 insertions(+), 5 deletions(-) diff --git a/ivi-shell/ivi-layout.c b/ivi-shell/ivi-layout.c index efc0da5..c8ea270 100644 --- a/ivi-shell/ivi-layout.c +++ b/ivi-shell/ivi-layout.c @@ -665,15 +665,24 @@ calc_inverse_matrix_transform(const struct weston_matrix *matrix, /** * This computes the whole transformation matrix:m from surface-local - * coordinates to global coordinates. It is assumed that - * weston_view::geometry.{x,y} are zero. + * coordinates to multi screens coordinate, which is global coordinates. + * It is assumed that weston_view::geometry.{x,y} are zero. * * Additionally, this computes the mask on surface-local coordinates as a * ivi_rectangle. This can be set to weston_view_set_mask. * * The mask is computed by following steps - * - destination rectangle of layer is inversed to surface-local cooodinates - * by inversed matrix:m. + * - destination rectangle of layer is tansformed to multi screen coordinate, + * global coordinates. This is done by adding weston_output.{x,y} in simple + * because there is no scaled and rotated transformation. + * - destination rectangle of layer in multi screens coordinate needs to be + * intersected inside of a screen the layer is assigned to. This is because + * overlapped region of weston surface in another screen shall not be + * displayed according to ivi use case. + * - destination rectangle of layer + * - in multi screen coordinates, + * - and intersected inside of an assigned screen, + * is inversed to surface-local cooodinates by inversed matrix:m. * - the area is intersected by intersected area between weston_surface and * source rectangle of ivi_surface. */ @@ -706,7 +715,17 @@ calc_surface_to_global_matrix_and_mask_to_weston_surface( lp->dest_y, lp->dest_width, lp->dest_height }; + struct ivi_rectangle screen_dest_rect = { output->x, + output->y, + output->width, + output->height }; + struct ivi_rectangle layer_dest_rect_in_global = + { lp->dest_x + output->x, + lp->dest_y + output->y, + lp->dest_width, + lp->dest_height }; struct ivi_rectangle surface_result; + struct ivi_rectangle layer_dest_rect_in_global_intersected; /* * the whole transformation matrix:m from surface-local @@ -729,9 +748,16 @@ calc_surface_to_global_matrix_and_mask_to_weston_surface( ivi_rectangle_intersect(&surface_source_rect, &weston_surface_rect, &surface_result); + /* + * destination rectangle of layer in multi screens coordinate + * is intersected to avoid displaying outside of an assigned screen. + */ + ivi_rectangle_intersect(&layer_dest_rect_in_global, &screen_dest_rect, + &layer_dest_rect_in_global_intersected); + /* calc masking area of weston_surface from m */ calc_inverse_matrix_transform(m, - &layer_dest_rect, + &layer_dest_rect_in_global_intersected, &surface_result, result); } -- 2.4.5