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Implement animated transitions for zoom in/out.

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Scott Moreau 13 years ago committed by Kristian Høgsberg
parent befa65318a
commit e6603981da
3 changed files with 105 additions and 42 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 88
      src/compositor.c
  2. 41
      src/compositor.h
  3. 18
      src/shell.c

88
src/compositor.c
Unescape View File

@ -1640,7 +1640,7 @@ notify_motion(struct wl_seat *seat, uint32_t time, wl_fixed_t x, wl_fixed_t y)
if (output->zoom.active &&
pixman_region32_contains_point(&output->region,
ix, iy, NULL))
weston_output_update_zoom(output, x, y, ZOOM_POINTER);
weston_output_update_zoom(output, x, y, ZOOM_FOCUS_POINTER);
weston_device_repick(seat);
interface = seat->pointer->grab->interface;
@ -2734,7 +2734,49 @@ weston_text_cursor_position_notify(struct weston_surface *surface,
wl_fixed_to_int(global_y),
NULL))
weston_output_update_zoom(output, global_x, global_y,
ZOOM_TEXT_CURSOR);
ZOOM_FOCUS_TEXT);
}
static void
weston_zoom_frame_z(struct weston_animation *animation,
struct weston_output *output, uint32_t msecs)
{
if (animation->frame_counter == 0)
output->zoom.spring_z.timestamp = msecs;
weston_spring_update(&output->zoom.spring_z, msecs);
if (output->zoom.spring_z.current > output->zoom.max_level)
output->zoom.spring_z.current = output->zoom.max_level;
else if (output->zoom.spring_z.current < 0.0)
output->zoom.spring_z.current = 0.0;
if (weston_spring_done(&output->zoom.spring_z)) {
if (output->zoom.level <= 0.0)
output->zoom.active = 0;
output->zoom.spring_z.current = output->zoom.level;
wl_list_remove(&animation->link);
wl_list_init(&animation->link);
}
output->dirty = 1;
weston_output_damage(output);
}
static void
weston_zoom_transition(struct weston_output *output)
{
if (output->zoom.level != output->zoom.spring_z.current) {
output->zoom.spring_z.target = output->zoom.level;
if (wl_list_empty(&output->zoom.animation_z.link)) {
output->zoom.animation_z.frame_counter = 0;
wl_list_insert(output->animation_list.prev,
&output->zoom.animation_z.link);
}
}
output->dirty = 1;
weston_output_damage(output);
}
WL_EXPORT void
@ -2745,25 +2787,35 @@ weston_output_update_zoom(struct weston_output *output,
{
float global_x, global_y;
float trans_min, trans_max;
float ratio, level;
if (output->zoom.level >= 1.0)
level = output->zoom.spring_z.current;
if (!output->zoom.active || level > output->zoom.max_level)
return;
output->zoom.type = type;
output->zoom.fx = x;
output->zoom.fy = y;
global_x = wl_fixed_to_double(x);
global_y = wl_fixed_to_double(y);
output->zoom.trans_x =
(((global_x - output->x) / output->current->width) *
(output->zoom.level * 2)) - output->zoom.level;
(level * 2)) - level;
output->zoom.trans_y =
(((global_y - output->y) / output->current->height) *
(output->zoom.level * 2)) - output->zoom.level;
(level * 2)) - level;
if (type == ZOOM_TEXT_CURSOR) {
output->zoom.trans_x *= 1 / output->zoom.level;
output->zoom.trans_y *= 1 / output->zoom.level;
if (type == ZOOM_FOCUS_TEXT) {
ratio = 1 / level;
trans_max = output->zoom.level * 2 - output->zoom.level;
output->zoom.trans_x *= ratio;
output->zoom.trans_y *= ratio;
trans_max = level * 2 - level;
trans_min = -trans_max;
if (output->zoom.trans_x > trans_max)
@ -2776,8 +2828,7 @@ weston_output_update_zoom(struct weston_output *output,
output->zoom.trans_y = trans_min;
}
output->dirty = 1;
weston_output_damage(output);
weston_zoom_transition(output);
}
WL_EXPORT void
@ -2799,10 +2850,14 @@ weston_output_update_matrix(struct weston_output *output)
flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
if (output->zoom.active) {
magnification = 1 / (1 - output->zoom.level);
magnification = 1 / (1 - output->zoom.spring_z.current);
weston_matrix_init(&camera);
weston_matrix_init(&modelview);
weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
weston_output_update_zoom(output, output->zoom.fx,
output->zoom.fy,
output->zoom.type);
weston_matrix_translate(&camera, output->zoom.trans_x,
flip * output->zoom.trans_y, 0);
weston_matrix_invert(&modelview, &camera);
weston_matrix_scale(&modelview, magnification, magnification, 1.0);
weston_matrix_multiply(&output->matrix, &modelview);
@ -2840,10 +2895,15 @@ weston_output_init(struct weston_output *output, struct weston_compositor *c,
wl_list_init(&output->read_pixels_list);
output->zoom.active = 0;
output->zoom.increment = 0.05;
output->zoom.increment = 0.07;
output->zoom.max_level = 0.95;
output->zoom.level = 0.0;
output->zoom.trans_x = 0.0;
output->zoom.trans_y = 0.0;
weston_spring_init(&output->zoom.spring_z, 250.0, 0.0, 0.0);
output->zoom.spring_z.friction = 1000;
output->zoom.animation_z.frame = weston_zoom_frame_z;
wl_list_init(&output->zoom.animation_z.link);
output->flags = flags;
weston_output_move(output, x, y);

41
src/compositor.h
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@ -94,16 +94,37 @@ struct weston_border {
int32_t left, right, top, bottom;
};
struct weston_animation {
void (*frame)(struct weston_animation *animation,
struct weston_output *output, uint32_t msecs);
int frame_counter;
struct wl_list link;
};
struct weston_spring {
double k;
double friction;
double current;
double target;
double previous;
uint32_t timestamp;
};
enum {
ZOOM_POINTER,
ZOOM_TEXT_CURSOR
ZOOM_FOCUS_POINTER,
ZOOM_FOCUS_TEXT
};
struct weston_output_zoom {
int active;
uint32_t type;
float increment;
float level;
float max_level;
wl_fixed_t fx, fy;
float trans_x, trans_y;
struct weston_animation animation_z;
struct weston_spring spring_z;
};
/* bit compatible with drm definitions. */
@ -228,22 +249,6 @@ struct weston_shader {
GLint opaque_uniform;
};
struct weston_animation {
void (*frame)(struct weston_animation *animation,
struct weston_output *output, uint32_t msecs);
int frame_counter;
struct wl_list link;
};
struct weston_spring {
double k;
double friction;
double current;
double target;
double previous;
uint32_t timestamp;
};
enum {
WESTON_COMPOSITOR_ACTIVE,
WESTON_COMPOSITOR_IDLE, /* shell->unlock called on activity */

18
src/shell.c
Unescape View File

@ -1706,7 +1706,7 @@ do_zoom(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t axis,
struct weston_seat *ws = (struct weston_seat *) seat;
struct weston_compositor *compositor = ws->compositor;
struct weston_output *output;
float maximum_level, increment;
float increment;
wl_list_for_each(output, &compositor->output_list, link) {
if (pixman_region32_contains_point(&output->region,
@ -1723,23 +1723,21 @@ do_zoom(struct wl_seat *seat, uint32_t time, uint32_t key, uint32_t axis,
else
increment = 0;
output->zoom.active = 1;
output->zoom.level += increment;
if (output->zoom.level <= 0.0) {
output->zoom.active = 0;
if (output->zoom.level < 0.0)
output->zoom.level = 0.0;
}
maximum_level = 1 - output->zoom.increment;
else if (output->zoom.level > output->zoom.max_level)
output->zoom.level = output->zoom.max_level;
else
output->zoom.active = 1;
if (output->zoom.level > maximum_level)
output->zoom.level = maximum_level;
output->zoom.spring_z.target = output->zoom.level;
weston_output_update_zoom(output,
seat->pointer->x,
seat->pointer->y,
ZOOM_POINTER);
ZOOM_FOCUS_POINTER);
}
}
}

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