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Merge pull request #198 from emersion/rootston-move-resize-rotate 

rootston: force move, resize and rotate
This commit is contained in:
Drew DeVault 2017-10-05 13:12:29 -04:00 committed by GitHub
parent cec012019f 1a775adbde
commit d74a6d254f
7 changed files with 167 additions and 41 deletions
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4
include/rootston/config.h
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@ -33,6 +33,10 @@ struct roots_config {
struct wlr_box *mapped_box;
} cursor;
struct {
uint32_t meta_key;
} keyboard;
struct wl_list outputs;
struct wl_list devices;
struct wl_list bindings;

1
include/rootston/input.h
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@ -84,6 +84,7 @@ 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

50
rootston/config.c
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@ -86,6 +86,28 @@ invalid_input:
return NULL;
}
static uint32_t parse_modifier(const char *symname) {
if (strcmp(symname, "Shift") == 0) {
return WLR_MODIFIER_SHIFT;
} else if (strcmp(symname, "Caps") == 0) {
return WLR_MODIFIER_CAPS;
} else if (strcmp(symname, "Ctrl") == 0) {
return WLR_MODIFIER_CTRL;
} else if (strcmp(symname, "Alt") == 0) {
return WLR_MODIFIER_ALT;
} else if (strcmp(symname, "Mod2") == 0) {
return WLR_MODIFIER_MOD2;
} else if (strcmp(symname, "Mod3") == 0) {
return WLR_MODIFIER_MOD3;
} else if (strcmp(symname, "Logo") == 0) {
return WLR_MODIFIER_LOGO;
} else if (strcmp(symname, "Mod5") == 0) {
return WLR_MODIFIER_MOD5;
} else {
return 0;
}
}
static const char *output_prefix = "output:";
static const char *device_prefix = "device:";
@ -171,6 +193,15 @@ static int config_ini_handler(void *user, const char *section, const char *name,
} else {
wlr_log(L_ERROR, "got unknown device config: %s", name);
}
} else if (strcmp(section, "keyboard") == 0) {
if (strcmp(name, "meta-key") == 0) {
config->keyboard.meta_key = parse_modifier(value);
if (config->keyboard.meta_key == 0) {
wlr_log(L_ERROR, "got unknown meta key: %s", name);
}
} else {
wlr_log(L_ERROR, "got unknown keyboard config: %s", name);
}
} else if (strcmp(section, "bindings") == 0) {
struct binding_config *bc = calloc(1, sizeof(struct binding_config));
wl_list_insert(&config->bindings, &bc->link);
@ -190,22 +221,9 @@ static int config_ini_handler(void *user, const char *section, const char *name,
bc->keysyms = calloc(1, keysyms_len * sizeof(xkb_keysym_t));
char *symname = symnames;
for (size_t i = 0; i < keysyms_len; i++) {
if (strcmp(symname, "Shift") == 0) {
bc->modifiers |= WLR_MODIFIER_SHIFT;
} else if (strcmp(symname, "Caps") == 0) {
bc->modifiers |= WLR_MODIFIER_CAPS;
} else if (strcmp(symname, "Ctrl") == 0) {
bc->modifiers |= WLR_MODIFIER_CTRL;
} else if (strcmp(symname, "Alt") == 0) {
bc->modifiers |= WLR_MODIFIER_ALT;
} else if (strcmp(symname, "Mod2") == 0) {
bc->modifiers |= WLR_MODIFIER_MOD2;
} else if (strcmp(symname, "Mod3") == 0) {
bc->modifiers |= WLR_MODIFIER_MOD3;
} else if (strcmp(symname, "Logo") == 0) {
bc->modifiers |= WLR_MODIFIER_LOGO;
} else if (strcmp(symname, "Mod5") == 0) {
bc->modifiers |= WLR_MODIFIER_MOD5;
uint32_t modifier = parse_modifier(symname);
if (modifier != 0) {
bc->modifiers |= modifier;
} else {
xkb_keysym_t sym = xkb_keysym_from_name(symname,
XKB_KEYSYM_NO_FLAGS);

87
rootston/cursor.c
View File

@ -1,5 +1,8 @@
#define _XOPEN_SOURCE 500
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <math.h>
// TODO: BSD et al
#include <linux/input-event-codes.h>
#include <wayland-server.h>
@ -24,15 +27,16 @@ 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;
@ -45,6 +49,15 @@ 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;
@ -63,16 +76,18 @@ 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;
@ -91,6 +106,19 @@ 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);
int steps = 12;
angle = round(angle/M_PI*steps) / (steps/M_PI);
view->rotation = input->view_rotation + angle;
}
break;
}
}
@ -141,6 +169,23 @@ static void handle_cursor_axis(struct wl_listener *listener, void *data) {
event->orientation, event->delta);
}
static bool is_meta_pressed(struct roots_input *input) {
uint32_t meta_key = input->server->config->keyboard.meta_key;
if (meta_key == 0) {
return false;
}
struct roots_keyboard *keyboard;
wl_list_for_each(keyboard, &input->keyboards, link) {
uint32_t modifiers =
wlr_keyboard_get_modifiers(keyboard->device->keyboard);
if ((modifiers ^ meta_key) == 0) {
return true;
}
}
return false;
}
static void do_cursor_button_press(struct roots_input *input,
struct wlr_cursor *cursor, struct wlr_input_device *device,
uint32_t time, uint32_t button, uint32_t state) {
@ -149,8 +194,28 @@ static void do_cursor_button_press(struct roots_input *input,
double sx, sy;
struct roots_view *view = view_at(desktop,
input->cursor->x, input->cursor->y, &surface, &sx, &sy);
uint32_t serial = wlr_seat_pointer_send_button(
input->wl_seat, time, button, state);
if (state == WLR_BUTTON_PRESSED && view && is_meta_pressed(input)) {
set_view_focus(input, desktop, view);
switch (button) {
case BTN_LEFT:
view_begin_move(input, cursor, view);
break;
case BTN_RIGHT:
view_begin_resize(input, cursor, view,
ROOTS_CURSOR_RESIZE_EDGE_RIGHT |
ROOTS_CURSOR_RESIZE_EDGE_BOTTOM);
break;
case BTN_MIDDLE:
view_begin_rotate(input, cursor, view);
}
return;
}
uint32_t serial = wlr_seat_pointer_send_button(input->wl_seat, time, button,
state);
int i;
switch (state) {
case WLR_BUTTON_RELEASED:

21
rootston/desktop.c
View File

@ -2,6 +2,7 @@
#include <assert.h>
#include <time.h>
#include <stdlib.h>
#include <math.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_cursor.h>
@ -92,10 +93,22 @@ struct roots_view *view_at(struct roots_desktop *desktop, double lx, double ly,
double view_sx = lx - view->x;
double view_sy = ly - view->y;
struct wlr_box box;
view_get_input_bounds(view, &box);
if (view->rotation != 0.0) {
// Coordinates relative to the center of the view
double ox = view_sx - (double)box.width/2,
oy = view_sy - (double)box.height/2;
// Rotated coordinates
double rx = cos(view->rotation)*ox - sin(view->rotation)*oy,
ry = cos(view->rotation)*oy + sin(view->rotation)*ox;
view_sx = rx + (double)box.width/2;
view_sy = ry + (double)box.height/2;
}
double sub_x, sub_y;
struct wlr_subsurface *subsurface =
subsurface_at(view->wlr_surface, view_sx, view_sy, &sub_x, &sub_y);
if (subsurface) {
*sx = view_sx - sub_x;
*sy = view_sy - sub_y;
@ -103,11 +116,7 @@ struct roots_view *view_at(struct roots_desktop *desktop, double lx, double ly,
return view;
}
struct wlr_box box;
view_get_input_bounds(view, &box);
box.x += view->x;
box.y += view->y;
if (wlr_box_contains_point(&box, lx, ly)) {
if (wlr_box_contains_point(&box, view_sx, view_sy)) {
*sx = view_sx;
*sy = view_sy;
*surface = view->wlr_surface;

36
rootston/output.c
View File

@ -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;
@ -29,8 +29,18 @@ static void render_surface(struct wlr_surface *surface,
if (wlr_output_layout_intersects(desktop->layout, wlr_output,
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,
@ -46,9 +56,25 @@ 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 +82,7 @@ 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) {

5
rootston/rootston.ini.example
View File

@ -25,8 +25,11 @@ map-to-output = VGA-1
# Restrict cursor movements for this mouse to concrete rectangle
geometry = 2500x800
[keyboard]
meta-key = Logo
# Keybindings
# Maps key combinations with commands to execute
# The special command "exit" stops the compositor
[bindings]
Logo+q=exit
Logo+q = exit