From 9b88f2520862f8707e5e7b91ac0871adbe2edac9 Mon Sep 17 00:00:00 2001 From: emersion Date: Tue, 3 Oct 2017 21:06:32 +0200 Subject: [PATCH] rootston: rotate views! --- include/rootston/input.h | 1 + rootston/cursor.c | 44 ++++++++++++++++++++++++++++++++-------- rootston/output.c | 21 ++++++++++++++----- 3 files changed, 52 insertions(+), 14 deletions(-) diff --git a/include/rootston/input.h b/include/rootston/input.h index 6161eb7a..21120ad2 100644 --- a/include/rootston/input.h +++ b/include/rootston/input.h @@ -83,6 +83,7 @@ struct roots_input { struct roots_view *active_view; int offs_x, offs_y; int view_x, view_y, view_width, view_height; + float view_rotation; uint32_t resize_edges; // Ring buffer of input events that could trigger move/resize/rotate diff --git a/rootston/cursor.c b/rootston/cursor.c index ef941730..00218064 100644 --- a/rootston/cursor.c +++ b/rootston/cursor.c @@ -1,6 +1,7 @@ #include #include #include +#include // TODO: BSD et al #include #include @@ -25,15 +26,16 @@ const struct roots_input_event *get_input_event(struct roots_input *input, void view_begin_move(struct roots_input *input, struct wlr_cursor *cursor, struct roots_view *view) { input->mode = ROOTS_CURSOR_MOVE; - input->offs_x = cursor->x - view->x; - input->offs_y = cursor->y - view->y; + input->offs_x = cursor->x; + input->offs_y = cursor->y; + input->view_x = view->x; + input->view_y = view->y; wlr_seat_pointer_clear_focus(input->wl_seat); } void view_begin_resize(struct roots_input *input, struct wlr_cursor *cursor, struct roots_view *view, uint32_t edges) { input->mode = ROOTS_CURSOR_RESIZE; - wlr_log(L_DEBUG, "begin resize"); input->offs_x = cursor->x; input->offs_y = cursor->y; input->view_x = view->x; @@ -46,6 +48,15 @@ void view_begin_resize(struct roots_input *input, struct wlr_cursor *cursor, wlr_seat_pointer_clear_focus(input->wl_seat); } +void view_begin_rotate(struct roots_input *input, struct wlr_cursor *cursor, + struct roots_view *view) { + input->mode = ROOTS_CURSOR_ROTATE; + input->offs_x = cursor->x; + input->offs_y = cursor->y; + input->view_rotation = view->rotation; + wlr_seat_pointer_clear_focus(input->wl_seat); +} + void cursor_update_position(struct roots_input *input, uint32_t time) { struct roots_desktop *desktop = input->server->desktop; struct roots_view *view; @@ -64,16 +75,18 @@ void cursor_update_position(struct roots_input *input, uint32_t time) { break; case ROOTS_CURSOR_MOVE: if (input->active_view) { - input->active_view->x = input->cursor->x - input->offs_x; - input->active_view->y = input->cursor->y - input->offs_y; + int dx = input->cursor->x - input->offs_x, + dy = input->cursor->y - input->offs_y; + input->active_view->x = input->view_x + dx; + input->active_view->y = input->view_y + dy; } break; case ROOTS_CURSOR_RESIZE: if (input->active_view) { - int dx = input->cursor->x - input->offs_x; - int dy = input->cursor->y - input->offs_y; - int width = input->view_width; - int height = input->view_height; + int dx = input->cursor->x - input->offs_x, + dy = input->cursor->y - input->offs_y; + int width = input->view_width, + height = input->view_height; if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_TOP) { input->active_view->y = input->view_y + dy; height -= dy; @@ -92,6 +105,17 @@ void cursor_update_position(struct roots_input *input, uint32_t time) { } break; case ROOTS_CURSOR_ROTATE: + if (input->active_view) { + struct roots_view *view = input->active_view; + int ox = view->x + view->wlr_surface->current->width/2, + oy = view->y + view->wlr_surface->current->height/2; + int ux = input->offs_x - ox, + uy = input->offs_y - oy; + int vx = input->cursor->x - ox, + vy = input->cursor->y - oy; + float angle = atan2(vx*uy - vy*ux, vx*ux + vy*uy); + view->rotation = input->view_rotation + angle; + } break; } } @@ -175,6 +199,8 @@ static void do_cursor_button_press(struct roots_input *input, ROOTS_CURSOR_RESIZE_EDGE_RIGHT | ROOTS_CURSOR_RESIZE_EDGE_BOTTOM); break; + case BTN_MIDDLE: + view_begin_rotate(input, cursor, view); } return; } diff --git a/rootston/output.c b/rootston/output.c index 14d1783e..b3cbaf10 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 +27,20 @@ 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, + ox + width/2, 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, @@ -48,7 +58,8 @@ static void render_surface(struct wlr_surface *surface, wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) { render_surface(subsurface->surface, desktop, wlr_output, when, lx + subsurface->surface->current->subsurface_position.x, - ly + subsurface->surface->current->subsurface_position.y); + ly + subsurface->surface->current->subsurface_position.y, + rotation); } } } @@ -56,7 +67,7 @@ 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) {