diff options
author | Drew DeVault <sir@cmpwn.com> | 2018-02-09 09:38:48 -0500 |
---|---|---|
committer | GitHub <noreply@github.com> | 2018-02-09 09:38:48 -0500 |
commit | 34489dca16ef9e7fd05c161b8b4f2fd5ce5e4ef0 (patch) | |
tree | 2a90beb98aacd85bbc5bd30df998b4e7c92ec3e7 /include | |
parent | 09c2626e32fd0eadc4b95a4f36b34f6bde79f6f4 (diff) | |
parent | cdd55b5d19470981ad71f8e6d31bd8152e44364b (diff) |
Merge pull request #571 from emersion/output-damage
Output damage tracking
Diffstat (limited to 'include')
-rw-r--r-- | include/backend/drm/drm.h | 4 | ||||
-rw-r--r-- | include/backend/drm/renderer.h | 2 | ||||
-rw-r--r-- | include/rootston/desktop.h | 21 | ||||
-rw-r--r-- | include/rootston/output.h | 50 | ||||
-rw-r--r-- | include/rootston/seat.h | 23 | ||||
-rw-r--r-- | include/rootston/view.h | 56 | ||||
-rw-r--r-- | include/wlr/interfaces/wlr_output.h | 6 | ||||
-rw-r--r-- | include/wlr/render.h | 8 | ||||
-rw-r--r-- | include/wlr/render/egl.h | 11 | ||||
-rw-r--r-- | include/wlr/render/interface.h | 3 | ||||
-rw-r--r-- | include/wlr/types/wlr_box.h | 14 | ||||
-rw-r--r-- | include/wlr/types/wlr_compositor.h | 2 | ||||
-rw-r--r-- | include/wlr/types/wlr_data_device.h | 4 | ||||
-rw-r--r-- | include/wlr/types/wlr_output.h | 56 | ||||
-rw-r--r-- | include/wlr/types/wlr_seat.h | 2 | ||||
-rw-r--r-- | include/wlr/types/wlr_surface.h | 5 | ||||
-rw-r--r-- | include/wlr/types/wlr_wl_shell.h | 1 | ||||
-rw-r--r-- | include/wlr/types/wlr_xdg_shell_v6.h | 5 | ||||
-rw-r--r-- | include/wlr/util/region.h | 29 |
19 files changed, 256 insertions, 46 deletions
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h index 72671f45..af472ede 100644 --- a/include/backend/drm/drm.h +++ b/include/backend/drm/drm.h @@ -123,8 +123,8 @@ struct wlr_drm_connector { union wlr_drm_connector_props props; - uint32_t width; - uint32_t height; + uint32_t width, height; + int32_t cursor_x, cursor_y; drmModeCrtc *old_crtc; diff --git a/include/backend/drm/renderer.h b/include/backend/drm/renderer.h index 45127cd0..a3f19fc3 100644 --- a/include/backend/drm/renderer.h +++ b/include/backend/drm/renderer.h @@ -45,7 +45,7 @@ bool wlr_drm_plane_surfaces_init(struct wlr_drm_plane *plane, struct wlr_drm_bac int32_t width, uint32_t height, uint32_t format); void wlr_drm_surface_finish(struct wlr_drm_surface *surf); -void wlr_drm_surface_make_current(struct wlr_drm_surface *surf); +bool wlr_drm_surface_make_current(struct wlr_drm_surface *surf, int *buffer_age); struct gbm_bo *wlr_drm_surface_swap_buffers(struct wlr_drm_surface *surf); struct gbm_bo *wlr_drm_surface_get_front(struct wlr_drm_surface *surf); void wlr_drm_surface_post(struct wlr_drm_surface *surf); diff --git a/include/rootston/desktop.h b/include/rootston/desktop.h index 9dfd7b10..1232121a 100644 --- a/include/rootston/desktop.h +++ b/include/rootston/desktop.h @@ -16,15 +16,7 @@ #include <wlr/types/wlr_idle.h> #include "rootston/view.h" #include "rootston/config.h" - -struct roots_output { - struct roots_desktop *desktop; - struct wlr_output *wlr_output; - struct wl_listener frame; - struct timespec last_frame; - struct wl_list link; // roots_desktop:outputs - struct roots_view *fullscreen_view; -}; +#include "rootston/output.h" struct roots_desktop { struct wl_list views; // roots_view::link @@ -64,7 +56,7 @@ struct roots_desktop { struct roots_server; struct roots_desktop *desktop_create(struct roots_server *server, - struct roots_config *config); + struct roots_config *config); void desktop_destroy(struct roots_desktop *desktop); struct roots_output *desktop_output_from_wlr_output( struct roots_desktop *desktop, struct wlr_output *output); @@ -72,11 +64,12 @@ struct roots_view *desktop_view_at(struct roots_desktop *desktop, double lx, double ly, struct wlr_surface **surface, double *sx, double *sy); void view_init(struct roots_view *view, struct roots_desktop *desktop); -void view_destroy(struct roots_view *view); +void view_finish(struct roots_view *view); void view_activate(struct roots_view *view, bool activate); - -void output_add_notify(struct wl_listener *listener, void *data); -void output_remove_notify(struct wl_listener *listener, void *data); +void view_apply_damage(struct roots_view *view); +void view_damage_whole(struct roots_view *view); +void view_update_position(struct roots_view *view, double x, double y); +void view_update_size(struct roots_view *view, uint32_t width, uint32_t height); void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data); void handle_wl_shell_surface(struct wl_listener *listener, void *data); diff --git a/include/rootston/output.h b/include/rootston/output.h new file mode 100644 index 00000000..3a6d3cc7 --- /dev/null +++ b/include/rootston/output.h @@ -0,0 +1,50 @@ +#ifndef _ROOTSTON_OUTPUT_H +#define _ROOTSTON_OUTPUT_H + +#include <time.h> +#include <pixman.h> +#include <wayland-server.h> + +/** + * Damage tracking requires to keep track of previous frames' damage. To allow + * damage tracking to work with triple buffering, a history of two frames is + * required. + */ +#define ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN 2 + +struct roots_desktop; + +struct roots_output { + struct roots_desktop *desktop; + struct wlr_output *wlr_output; + struct wl_list link; // roots_desktop:outputs + + struct roots_view *fullscreen_view; + + struct timespec last_frame; + pixman_region32_t damage; // in ouput-local coordinates + + // circular queue for previous damage + pixman_region32_t previous_damage[ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN]; + size_t previous_damage_idx; + + struct wl_listener frame; + struct wl_listener mode; + struct wl_listener needs_swap; +}; + +void output_add_notify(struct wl_listener *listener, void *data); +void output_remove_notify(struct wl_listener *listener, void *data); + +struct roots_view; +struct roots_drag_icon; + +void output_damage_whole(struct roots_output *output); +void output_damage_whole_view(struct roots_output *output, + struct roots_view *view); +void output_damage_from_view(struct roots_output *output, + struct roots_view *view); +void output_damage_whole_drag_icon(struct roots_output *output, + struct roots_drag_icon *icon); + +#endif diff --git a/include/rootston/seat.h b/include/rootston/seat.h index 2be8e467..0047522c 100644 --- a/include/rootston/seat.h +++ b/include/rootston/seat.h @@ -17,12 +17,15 @@ struct roots_seat { struct wl_list views; // roots_seat_view::link bool has_focus; + struct wl_list drag_icons; // roots_drag_icon::link + struct wl_list keyboards; struct wl_list pointers; struct wl_list touch; struct wl_list tablet_tools; - struct wl_listener seat_destroy; + struct wl_listener new_drag_icon; + struct wl_listener destroy; }; struct roots_seat_view { @@ -38,6 +41,18 @@ struct roots_seat_view { struct wl_listener view_destroy; }; +struct roots_drag_icon { + struct roots_seat *seat; + struct wlr_drag_icon *wlr_drag_icon; + struct wl_list link; + + double x, y; + + struct wl_listener surface_commit; + struct wl_listener map; + struct wl_listener destroy; +}; + struct roots_pointer { struct roots_seat *seat; struct wlr_input_device *device; @@ -92,6 +107,10 @@ void roots_seat_begin_rotate(struct roots_seat *seat, struct roots_view *view); void roots_seat_end_compositor_grab(struct roots_seat *seat); struct roots_seat_view *roots_seat_view_from_view( struct roots_seat *seat, - struct roots_view *view); + struct roots_view *view); + +void roots_drag_icon_update_position(struct roots_drag_icon *icon); + +void roots_drag_icon_damage_whole(struct roots_drag_icon *icon); #endif diff --git a/include/rootston/view.h b/include/rootston/view.h index e1172bca..f6968c7a 100644 --- a/include/rootston/view.h +++ b/include/rootston/view.h @@ -11,6 +11,7 @@ struct roots_wl_shell_surface { struct roots_view *view; struct wl_listener destroy; + struct wl_listener new_popup; struct wl_listener request_move; struct wl_listener request_resize; struct wl_listener request_maximize; @@ -23,13 +24,15 @@ struct roots_wl_shell_surface { struct roots_xdg_surface_v6 { struct roots_view *view; - struct wl_listener commit; struct wl_listener destroy; + struct wl_listener new_popup; struct wl_listener request_move; struct wl_listener request_resize; struct wl_listener request_maximize; struct wl_listener request_fullscreen; + struct wl_listener surface_commit; + uint32_t pending_move_resize_configure_serial; }; @@ -61,6 +64,7 @@ struct roots_view { struct wl_list link; // roots_desktop::views double x, y; + uint32_t width, height; float rotation; bool decorated; @@ -97,17 +101,17 @@ struct roots_view { struct roots_xwayland_surface *roots_xwayland_surface; #endif }; + struct wlr_surface *wlr_surface; + struct wl_list children; // roots_view_child::link + + struct wl_listener new_subsurface; struct { struct wl_signal destroy; } events; - // TODO: This would probably be better as a field that's updated on a - // configure event from the xdg_shell - // If not then this should follow the typical type/impl pattern we use - // elsewhere - void (*get_size)(const struct roots_view *view, struct wlr_box *box); + // TODO: this should follow the typical type/impl pattern we use elsewhere void (*activate)(struct roots_view *view, bool active); void (*move)(struct roots_view *view, double x, double y); void (*resize)(struct roots_view *view, uint32_t width, uint32_t height); @@ -118,6 +122,38 @@ struct roots_view { void (*close)(struct roots_view *view); }; +struct roots_view_child { + struct roots_view *view; + struct wlr_surface *wlr_surface; + struct wl_list link; + + struct wl_listener commit; + struct wl_listener new_subsurface; + + void (*destroy)(struct roots_view_child *child); +}; + +struct roots_subsurface { + struct roots_view_child view_child; + struct wlr_subsurface *wlr_subsurface; + struct wl_listener destroy; +}; + +struct roots_wl_shell_popup { + struct roots_view_child view_child; + struct wlr_wl_shell_surface *wlr_wl_shell_surface; + struct wl_listener destroy; + struct wl_listener set_state; + struct wl_listener new_popup; +}; + +struct roots_xdg_popup_v6 { + struct roots_view_child view_child; + struct wlr_xdg_popup_v6 *wlr_popup; + struct wl_listener destroy; + struct wl_listener new_popup; +}; + void view_get_box(const struct roots_view *view, struct wlr_box *box); void view_activate(struct roots_view *view, bool active); void view_move(struct roots_view *view, double x, double y); @@ -127,6 +163,7 @@ void view_move_resize(struct roots_view *view, double x, double y, void view_maximize(struct roots_view *view, bool maximized); void view_set_fullscreen(struct roots_view *view, bool fullscreen, struct wlr_output *output); +void view_rotate(struct roots_view *view, float rotation); void view_close(struct roots_view *view); bool view_center(struct roots_view *view); void view_setup(struct roots_view *view); @@ -145,4 +182,11 @@ enum roots_deco_part { enum roots_deco_part view_get_deco_part(struct roots_view *view, double sx, double sy); +void view_child_init(struct roots_view_child *child, struct roots_view *view, + struct wlr_surface *wlr_surface); +void view_child_finish(struct roots_view_child *child); + +struct roots_subsurface *subsurface_create(struct roots_view *view, + struct wlr_subsurface *wlr_subsurface); + #endif diff --git a/include/wlr/interfaces/wlr_output.h b/include/wlr/interfaces/wlr_output.h index d5837def..652be45e 100644 --- a/include/wlr/interfaces/wlr_output.h +++ b/include/wlr/interfaces/wlr_output.h @@ -18,8 +18,8 @@ struct wlr_output_impl { int32_t hotspot_x, int32_t hotspot_y, bool update_pixels); bool (*move_cursor)(struct wlr_output *output, int x, int y); void (*destroy)(struct wlr_output *output); - void (*make_current)(struct wlr_output *output); - void (*swap_buffers)(struct wlr_output *output); + bool (*make_current)(struct wlr_output *output, int *buffer_age); + bool (*swap_buffers)(struct wlr_output *output); void (*set_gamma)(struct wlr_output *output, uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b); uint32_t (*get_gamma_size)(struct wlr_output *output); @@ -32,5 +32,7 @@ void wlr_output_update_mode(struct wlr_output *output, void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width, int32_t height, int32_t refresh); void wlr_output_update_enabled(struct wlr_output *output, bool enabled); +void wlr_output_update_needs_swap(struct wlr_output *output); +void wlr_output_send_frame(struct wlr_output *output); #endif diff --git a/include/wlr/render.h b/include/wlr/render.h index 00088b52..ccc66d36 100644 --- a/include/wlr/render.h +++ b/include/wlr/render.h @@ -5,6 +5,7 @@ #include <EGL/egl.h> #include <EGL/eglext.h> #include <wayland-server-protocol.h> +#include <wlr/types/wlr_box.h> #include <wlr/types/wlr_output.h> struct wlr_texture; @@ -12,6 +13,13 @@ struct wlr_renderer; void wlr_renderer_begin(struct wlr_renderer *r, struct wlr_output *output); void wlr_renderer_end(struct wlr_renderer *r); +void wlr_renderer_clear(struct wlr_renderer *r, const float (*color)[4]); +/** + * Defines a scissor box. Only pixels that lie within the scissor box can be + * modified by drawing functions. Providing a NULL `box` disables the scissor + * box. + */ +void wlr_renderer_scissor(struct wlr_renderer *r, struct wlr_box *box); /** * Requests a texture handle from this renderer. */ diff --git a/include/wlr/render/egl.h b/include/wlr/render/egl.h index bdb8d286..6979fd9b 100644 --- a/include/wlr/render/egl.h +++ b/include/wlr/render/egl.h @@ -11,8 +11,12 @@ struct wlr_egl { EGLConfig config; EGLContext context; - const char *egl_exts; - const char *gl_exts; + const char *egl_exts_str; + const char *gl_exts_str; + + struct { + bool buffer_age; + } egl_exts; struct wl_display *wl_display; }; @@ -65,4 +69,7 @@ bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image); */ const char *egl_error(void); +bool wlr_egl_make_current(struct wlr_egl *egl, EGLSurface surface, + int *buffer_age); + #endif diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h index bb337409..b8e99898 100644 --- a/include/wlr/render/interface.h +++ b/include/wlr/render/interface.h @@ -6,6 +6,7 @@ #include <EGL/eglext.h> #include <stdbool.h> #include <wlr/render.h> +#include <wlr/types/wlr_box.h> #include <wlr/types/wlr_output.h> struct wlr_renderer_impl; @@ -17,6 +18,8 @@ struct wlr_renderer { struct wlr_renderer_impl { void (*begin)(struct wlr_renderer *renderer, struct wlr_output *output); void (*end)(struct wlr_renderer *renderer); + void (*clear)(struct wlr_renderer *renderer, const float (*color)[4]); + void (*scissor)(struct wlr_renderer *renderer, struct wlr_box *box); struct wlr_texture *(*texture_create)(struct wlr_renderer *renderer); bool (*render_with_matrix)(struct wlr_renderer *renderer, struct wlr_texture *texture, const float (*matrix)[16]); diff --git a/include/wlr/types/wlr_box.h b/include/wlr/types/wlr_box.h index 0588201c..fc86f0ac 100644 --- a/include/wlr/types/wlr_box.h +++ b/include/wlr/types/wlr_box.h @@ -2,6 +2,7 @@ #define WLR_TYPES_WLR_BOX_H #include <stdbool.h> +#include <wayland-server.h> struct wlr_box { int x, y; @@ -18,8 +19,17 @@ bool wlr_box_contains_point(const struct wlr_box *box, double x, double y); bool wlr_box_empty(const struct wlr_box *box); -enum wl_output_transform; +/** + * Transforms a box inside a `width` x `height` box. + */ void wlr_box_transform(const struct wlr_box *box, - enum wl_output_transform transform, struct wlr_box *dest); + enum wl_output_transform transform, int width, int height, + struct wlr_box *dest); + +/** + * Creates the smallest box that contains a rotated box. + */ +void wlr_box_rotated_bounds(const struct wlr_box *box, float rotation, + struct wlr_box *dest); #endif diff --git a/include/wlr/types/wlr_compositor.h b/include/wlr/types/wlr_compositor.h index ceeb64ca..8481c590 100644 --- a/include/wlr/types/wlr_compositor.h +++ b/include/wlr/types/wlr_compositor.h @@ -13,7 +13,7 @@ struct wlr_compositor { struct wl_listener display_destroy; struct { - struct wl_signal create_surface; + struct wl_signal new_surface; } events; }; diff --git a/include/wlr/types/wlr_data_device.h b/include/wlr/types/wlr_data_device.h index 54514b4c..ff4a0f7e 100644 --- a/include/wlr/types/wlr_data_device.h +++ b/include/wlr/types/wlr_data_device.h @@ -71,10 +71,10 @@ struct wlr_drag_icon { bool is_pointer; int32_t touch_id; - int32_t sx; - int32_t sy; + int32_t sx, sy; struct { + struct wl_signal map; // emitted when mapped or unmapped struct wl_signal destroy; } events; diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h index 9df2001e..a653d527 100644 --- a/include/wlr/types/wlr_output.h +++ b/include/wlr/types/wlr_output.h @@ -2,6 +2,8 @@ #define WLR_TYPES_WLR_OUTPUT_H #include <stdbool.h> +#include <time.h> +#include <pixman.h> #include <wayland-util.h> #include <wayland-server.h> @@ -22,7 +24,6 @@ struct wlr_output_cursor { struct wl_list link; // only when using a software cursor without a surface - struct wlr_renderer *renderer; struct wlr_texture *texture; // only when using a cursor surface @@ -51,22 +52,26 @@ struct wlr_output { char serial[16]; int32_t phys_width, phys_height; // mm + // Note: some backends may have zero modes + struct wl_list modes; + struct wlr_output_mode *current_mode; + int32_t width, height; + int32_t refresh; // mHz, may be zero + bool enabled; float scale; enum wl_output_subpixel subpixel; enum wl_output_transform transform; - bool needs_swap; + bool needs_swap; + // damage for cursors and fullscreen surface, in output-local coordinates + pixman_region32_t damage; + bool frame_pending; float transform_matrix[16]; - // Note: some backends may have zero modes - struct wl_list modes; - struct wlr_output_mode *current_mode; - int32_t width, height; - int32_t refresh; // mHz - struct { struct wl_signal frame; + struct wl_signal needs_swap; struct wl_signal swap_buffers; struct wl_signal enable; struct wl_signal mode; @@ -75,9 +80,12 @@ struct wlr_output { struct wl_signal destroy; } events; + struct wl_event_source *idle_frame; + struct wlr_surface *fullscreen_surface; struct wl_listener fullscreen_surface_commit; struct wl_listener fullscreen_surface_destroy; + int fullscreen_width, fullscreen_height; struct wl_list cursors; // wlr_output_cursor::link struct wlr_output_cursor *hardware_cursor; @@ -104,16 +112,44 @@ void wlr_output_set_transform(struct wlr_output *output, void wlr_output_set_position(struct wlr_output *output, int32_t lx, int32_t ly); void wlr_output_set_scale(struct wlr_output *output, float scale); void wlr_output_destroy(struct wlr_output *output); +/** + * Computes the transformed output resolution. + */ +void wlr_output_transformed_resolution(struct wlr_output *output, + int *width, int *height); +/** + * Computes the transformed and scaled output resolution. + */ void wlr_output_effective_resolution(struct wlr_output *output, int *width, int *height); -void wlr_output_make_current(struct wlr_output *output); -void wlr_output_swap_buffers(struct wlr_output *output); +/** + * Makes the output rendering context current. + * + * `buffer_age` is set to the drawing buffer age in number of frames or -1 if + * unknown. This is useful for damage tracking. + */ +bool wlr_output_make_current(struct wlr_output *output, int *buffer_age); +/** + * Swaps the output buffers. If the time of the frame isn't known, set `when` to + * NULL. If the compositor doesn't support damage tracking, set `damage` to + * NULL. + * + * Swapping buffers schedules a `frame` event. + */ +bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when, + pixman_region32_t *damage); +/** + * Manually schedules a `frame` event. If a `frame` event is already pending, + * it is a no-op. + */ +void wlr_output_schedule_frame(struct wlr_output *output); void wlr_output_set_gamma(struct wlr_output *output, uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b); uint32_t wlr_output_get_gamma_size(struct wlr_output *output); void wlr_output_set_fullscreen_surface(struct wlr_output *output, struct wlr_surface *surface); + struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output); /** * Sets the cursor image. The image must be already scaled for the output. diff --git a/include/wlr/types/wlr_seat.h b/include/wlr/types/wlr_seat.h index c2a89f33..ffdabd98 100644 --- a/include/wlr/types/wlr_seat.h +++ b/include/wlr/types/wlr_seat.h @@ -209,6 +209,8 @@ struct wlr_seat { struct wl_signal selection; struct wl_signal primary_selection; + struct wl_signal new_drag_icon; + struct wl_signal destroy; } events; diff --git a/include/wlr/types/wlr_surface.h b/include/wlr/types/wlr_surface.h index 9f88d044..50316abc 100644 --- a/include/wlr/types/wlr_surface.h +++ b/include/wlr/types/wlr_surface.h @@ -56,6 +56,10 @@ struct wlr_subsurface { struct wl_list parent_pending_link; struct wl_listener parent_destroy_listener; + + struct { + struct wl_signal destroy; + } events; }; struct wlr_surface { @@ -70,6 +74,7 @@ struct wlr_surface { struct { struct wl_signal commit; + struct wl_signal new_subsurface; struct wl_signal destroy; } events; diff --git a/include/wlr/types/wlr_wl_shell.h b/include/wlr/types/wlr_wl_shell.h index 375477c7..00f2bb69 100644 --- a/include/wlr/types/wlr_wl_shell.h +++ b/include/wlr/types/wlr_wl_shell.h @@ -79,6 +79,7 @@ struct wlr_wl_shell_surface { struct { struct wl_signal destroy; struct wl_signal ping_timeout; + struct wl_signal new_popup; struct wl_signal request_move; struct wl_signal request_resize; diff --git a/include/wlr/types/wlr_xdg_shell_v6.h b/include/wlr/types/wlr_xdg_shell_v6.h index 280bea27..c7b1a24b 100644 --- a/include/wlr/types/wlr_xdg_shell_v6.h +++ b/include/wlr/types/wlr_xdg_shell_v6.h @@ -34,6 +34,7 @@ struct wlr_xdg_client_v6 { struct wlr_xdg_popup_v6 { struct wlr_xdg_surface_v6 *base; + struct wl_list link; struct wl_resource *resource; bool committed; @@ -104,8 +105,7 @@ struct wlr_xdg_surface_v6 { struct wlr_xdg_popup_v6 *popup_state; }; - struct wl_list popups; - struct wl_list popup_link; + struct wl_list popups; // wlr_xdg_popup_v6::link bool configured; bool added; @@ -126,6 +126,7 @@ struct wlr_xdg_surface_v6 { struct { struct wl_signal destroy; struct wl_signal ping_timeout; + struct wl_signal new_popup; struct wl_signal request_maximize; struct wl_signal request_fullscreen; diff --git a/include/wlr/util/region.h b/include/wlr/util/region.h new file mode 100644 index 00000000..7883af97 --- /dev/null +++ b/include/wlr/util/region.h @@ -0,0 +1,29 @@ +#ifndef WLR_UTIL_REGION_H +#define WLR_UTIL_REGION_H + +#include <pixman.h> +#include <wayland-server.h> + +/** + * Scales a region, ie. multiplies all its coordinates by `scale`. + * + * The resulting coordinates are rounded up or down so that the new region is + * at least as big as the original one. + */ +void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src, + float scale); + +/** + * Applies a transform to a region inside a box of size `width` x `height`. + */ +void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src, + enum wl_output_transform transform, int width, int height); + +/** + * Expands the region of `distance`. If `distance` is negative, it shrinks the + * region. + */ +void wlr_region_expand(pixman_region32_t *dst, pixman_region32_t *src, + int distance); + +#endif |