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Introduce output zoom.

Browse Source 
Ideally, we would want to use <modifier>+Scroll binding but that will have
to wait for axis events. For now we just use keybindings. Zoom in/out with
Super+Up/Down.
Scott Moreau 13 years ago committed by Kristian Høgsberg
parent 4889154f5b
commit ccbf29dcb4
3 changed files with 120 additions and 10 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. 68
      src/compositor.c
  2. 14
      src/compositor.h
  3. 48
      src/shell.c

68
src/compositor.c
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@ -774,7 +774,7 @@ weston_surface_draw(struct weston_surface *es, struct weston_output *output)
glUniform1f(es->shader->texwidth_uniform,
(GLfloat)es->geometry.width / es->pitch);
if (es->transform.enabled)
if (es->transform.enabled || output->zoom.active)
filter = GL_LINEAR;
else
filter = GL_NEAREST;
@ -1010,6 +1010,9 @@ weston_output_repaint(struct weston_output *output, int msecs)
&total_damage, &es->transform.opaque);
}
if (output->dirty)
weston_output_update_matrix(output);
output->repaint(output);
pixman_region32_fini(&total_damage);
@ -1497,6 +1500,11 @@ notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
device->x = x;
device->y = y;
wl_list_for_each(output, &ec->output_list, link)
if (output->zoom.active &&
pixman_region32_contains_point(&output->region, x, y, NULL))
weston_output_update_zoom(output, x, y);
weston_device_repick(device, time);
interface = device->pointer_grab->interface;
interface->motion(device->pointer_grab, time,
@ -2096,17 +2104,29 @@ weston_output_destroy(struct weston_output *output)
}
WL_EXPORT void
weston_output_move(struct weston_output *output, int x, int y)
weston_output_update_zoom(struct weston_output *output, int x, int y)
{
int flip;
float ratio;
output->x = x;
output->y = y;
if (output->zoom.level <= 0)
return;
pixman_region32_init(&output->previous_damage);
pixman_region32_init_rect(&output->region, x, y,
output->current->width,
output->current->height);
output->zoom.magnification = 1 / output->zoom.level;
ratio = 1 - (1 / output->zoom.magnification);
output->zoom.trans_x = (((float)(x - output->x) / output->current->width) * (ratio * 2)) - ratio;
output->zoom.trans_y = (((float)(y - output->y) / output->current->height) * (ratio * 2)) - ratio;
output->dirty = 1;
weston_output_damage(output);
}
WL_EXPORT void
weston_output_update_matrix(struct weston_output *output)
{
int flip;
struct weston_matrix camera;
struct weston_matrix modelview;
weston_matrix_init(&output->matrix);
weston_matrix_translate(&output->matrix,
@ -2117,8 +2137,28 @@ weston_output_move(struct weston_output *output, int x, int y)
weston_matrix_scale(&output->matrix,
2.0 / (output->current->width + output->border.left + output->border.right),
flip * 2.0 / (output->current->height + output->border.top + output->border.bottom), 1);
if (output->zoom.active) {
weston_matrix_init(&camera);
weston_matrix_init(&modelview);
weston_matrix_translate(&camera, output->zoom.trans_x, flip * output->zoom.trans_y, 0);
weston_matrix_invert(&modelview, &camera);
weston_matrix_scale(&modelview, output->zoom.magnification, output->zoom.magnification, 1.0);
weston_matrix_multiply(&output->matrix, &modelview);
}
weston_output_damage(output);
output->dirty = 0;
}
WL_EXPORT void
weston_output_move(struct weston_output *output, int x, int y)
{
output->x = x;
output->y = y;
pixman_region32_init(&output->previous_damage);
pixman_region32_init_rect(&output->region, x, y,
output->current->width,
output->current->height);
}
WL_EXPORT void
@ -2134,6 +2174,14 @@ weston_output_init(struct weston_output *output, struct weston_compositor *c,
output->border.right = 0;
output->mm_width = width;
output->mm_height = height;
output->dirty = 1;
output->zoom.active = 0;
output->zoom.increment = 0.05;
output->zoom.level = 1.0;
output->zoom.magnification = 1.0;
output->zoom.trans_x = 0.0;
output->zoom.trans_y = 0.0;
output->flags = flags;
weston_output_move(output, x, y);

14
src/compositor.h
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@ -54,6 +54,14 @@ struct weston_border {
int32_t left, right, top, bottom;
};
struct weston_output_zoom {
int active;
float increment;
float level;
float magnification;
float trans_x, trans_y;
};
struct weston_output {
struct wl_list link;
struct weston_compositor *compositor;
@ -66,6 +74,8 @@ struct weston_output {
uint32_t flags;
int repaint_needed;
int repaint_scheduled;
struct weston_output_zoom zoom;
int dirty;
char *make, *model;
uint32_t subpixel;
@ -420,6 +430,10 @@ weston_compositor_init(struct weston_compositor *ec, struct wl_display *display)
void
weston_compositor_shutdown(struct weston_compositor *ec);
void
weston_output_update_zoom(struct weston_output *output, int x, int y);
void
weston_output_update_matrix(struct weston_output *output);
void
weston_output_move(struct weston_output *output, int x, int y);
void
weston_output_init(struct weston_output *output, struct weston_compositor *c,

48
src/shell.c
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@ -1034,6 +1034,50 @@ resize_binding(struct wl_input_device *device, uint32_t time,
time, edges);
}
static void
zoom_in_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct weston_input_device *wd = (struct weston_input_device *) device;
struct weston_compositor *compositor = wd->compositor;
struct weston_output *output;
wl_list_for_each(output, &compositor->output_list, link) {
if (pixman_region32_contains_point(&output->region,
device->x, device->y, NULL)) {
output->zoom.active = 1;
output->zoom.level -= output->zoom.increment;
if (output->zoom.level < output->zoom.increment)
output->zoom.level = output->zoom.increment;
weston_output_update_zoom(output, device->x, device->y);
}
}
}
static void
zoom_out_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct weston_input_device *wd = (struct weston_input_device *) device;
struct weston_compositor *compositor = wd->compositor;
struct weston_output *output;
wl_list_for_each(output, &compositor->output_list, link) {
if (pixman_region32_contains_point(&output->region,
device->x, device->y, NULL)) {
output->zoom.level += output->zoom.increment;
if (output->zoom.level >= 1.0) {
output->zoom.active = 0;
output->zoom.level = 1.0;
}
weston_output_update_zoom(output, device->x, device->y);
}
}
}
static void
terminate_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
@ -1833,6 +1877,10 @@ shell_init(struct weston_compositor *ec)
terminate_binding, ec);
weston_compositor_add_binding(ec, 0, BTN_LEFT, 0,
click_to_activate_binding, ec);
weston_compositor_add_binding(ec, KEY_UP, 0, MODIFIER_SUPER,
zoom_in_binding, shell);
weston_compositor_add_binding(ec, KEY_DOWN, 0, MODIFIER_SUPER,
zoom_out_binding, shell);
weston_compositor_add_binding(ec, 0, BTN_LEFT,
MODIFIER_SUPER | MODIFIER_ALT,
rotate_binding, NULL);

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