diff options
Diffstat (limited to 'rootston/output.c')
| -rw-r--r-- | rootston/output.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/rootston/output.c b/rootston/output.c index bbc957aa..d7aade3d 100644 --- a/rootston/output.c +++ b/rootston/output.c @@ -18,7 +18,7 @@ static inline int64_t timespec_to_msec(const struct timespec *a) { static void render_surface(struct wlr_surface *surface, struct roots_desktop *desktop, struct wlr_output *wlr_output, - struct timespec *when, double lx, double ly) { + struct timespec *when, double lx, double ly, float rotation) { wlr_surface_flush_damage(surface); if (surface->texture->valid) { int width = surface->current->buffer_width; @@ -27,10 +27,19 @@ static void render_surface(struct wlr_surface *surface, wlr_output_layout_output_coords(desktop->layout, wlr_output, &ox, &oy); if (wlr_output_layout_intersects(desktop->layout, wlr_output, - lx, ly, lx + width, ly + height)) { + lx, ly, lx + width, ly + height)) { float matrix[16]; + + float translate_origin[16]; + wlr_matrix_translate(&translate_origin, + (int)ox + width / 2, (int)oy + height / 2, 0); + float rotate[16]; + wlr_matrix_rotate(&rotate, rotation); + float translate_center[16]; + wlr_matrix_translate(&translate_center, -width / 2, -height / 2, 0); float transform[16]; - wlr_matrix_translate(&transform, ox, oy, 0); + wlr_matrix_mul(&translate_origin, &rotate, &transform); + wlr_matrix_mul(&transform, &translate_center, &transform); wlr_surface_get_matrix(surface, &matrix, &wlr_output->transform_matrix, &transform); wlr_render_with_matrix(desktop->server->renderer, @@ -46,9 +55,25 @@ static void render_surface(struct wlr_surface *surface, struct wlr_subsurface *subsurface; wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) { + double sx = subsurface->surface->current->subsurface_position.x, + sy = subsurface->surface->current->subsurface_position.y; + double sw = subsurface->surface->current->buffer_width, + sh = subsurface->surface->current->buffer_height; + if (rotation != 0.0) { + // Coordinates relative to the center of the subsurface + double ox = sx - (double)width/2 + sw/2, + oy = sy - (double)height/2 + sh/2; + // Rotated coordinates + double rx = cos(-rotation)*ox - sin(-rotation)*oy, + ry = cos(-rotation)*oy + sin(-rotation)*ox; + sx = rx + (double)width/2 - sw/2; + sy = ry + (double)height/2 - sh/2; + } + render_surface(subsurface->surface, desktop, wlr_output, when, - lx + subsurface->surface->current->subsurface_position.x, - ly + subsurface->surface->current->subsurface_position.y); + lx + sx, + ly + sy, + rotation); } } } @@ -56,7 +81,7 @@ static void render_surface(struct wlr_surface *surface, static void render_view(struct roots_view *view, struct roots_desktop *desktop, struct wlr_output *wlr_output, struct timespec *when) { render_surface(view->wlr_surface, desktop, wlr_output, when, - view->x, view->y); + view->x, view->y, view->rotation); } static void output_frame_notify(struct wl_listener *listener, void *data) { |