Skip to content
Fetching contributors…
Cannot retrieve contributors at this time
405 lines (329 sloc) 13.1 KB
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <X11/extensions/Xfixes.h>
#include <clutter/x11/clutter-x11.h>
#include <clutter/clutter.h>
#include <cogl/cogl.h>
#include <meta/display.h>
#include <meta/util.h>
#include <meta/meta-plugin.h>
#include <meta/meta-shaped-texture.h>
#include "cinnamon-global.h"
#include "cinnamon-screen-grabber.h"
#include "cinnamon-screenshot.h"
struct _CinnamonScreenshotClass
{
GObjectClass parent_class;
};
struct _CinnamonScreenshot
{
GObject parent_instance;
CinnamonGlobal *global;
};
/* Used for async screenshot grabbing */
typedef struct _screenshot_data {
CinnamonScreenshot *screenshot;
char *filename;
cairo_surface_t *image;
cairo_rectangle_int_t screenshot_area;
gboolean include_cursor;
CinnamonScreenshotCallback callback;
} _screenshot_data;
G_DEFINE_TYPE(CinnamonScreenshot, cinnamon_screenshot, G_TYPE_OBJECT);
static void
cinnamon_screenshot_class_init (CinnamonScreenshotClass *screenshot_class)
{
(void) screenshot_class;
}
static void
cinnamon_screenshot_init (CinnamonScreenshot *screenshot)
{
screenshot->global = cinnamon_global_get ();
}
static void
on_screenshot_written (GObject *source,
GAsyncResult *result,
gpointer user_data)
{
_screenshot_data *screenshot_data = (_screenshot_data*) user_data;
if (screenshot_data->callback)
screenshot_data->callback (screenshot_data->screenshot,
g_simple_async_result_get_op_res_gboolean (G_SIMPLE_ASYNC_RESULT (result)),
&screenshot_data->screenshot_area);
cairo_surface_destroy (screenshot_data->image);
g_object_unref (screenshot_data->screenshot);
g_free (screenshot_data->filename);
g_free (screenshot_data);
}
static void
write_screenshot_thread (GSimpleAsyncResult *result,
GObject *object,
GCancellable *cancellable)
{
cairo_status_t status;
_screenshot_data *screenshot_data = g_async_result_get_user_data (G_ASYNC_RESULT (result));
g_assert (screenshot_data != NULL);
status = cairo_surface_write_to_png (screenshot_data->image, screenshot_data->filename);
g_simple_async_result_set_op_res_gboolean (result, status == CAIRO_STATUS_SUCCESS);
}
static void
do_grab_screenshot (_screenshot_data *screenshot_data,
int x,
int y,
int width,
int height)
{
CinnamonScreenGrabber *grabber;
static const cairo_user_data_key_t key;
guchar *data;
grabber = cinnamon_screen_grabber_new ();
data = cinnamon_screen_grabber_grab (grabber, x, y, width, height);
g_object_unref (grabber);
screenshot_data->image = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_RGB24,
width, height, width * 4);
cairo_surface_set_user_data (screenshot_data->image, &key,
data, (cairo_destroy_func_t)g_free);
}
static void
_draw_cursor_image (cairo_surface_t *surface,
cairo_rectangle_int_t area)
{
XFixesCursorImage *cursor_image;
cairo_surface_t *cursor_surface;
cairo_region_t *screenshot_region;
cairo_t *cr;
guchar *data;
int stride;
int i, j;
cursor_image = XFixesGetCursorImage (clutter_x11_get_default_display ());
if (!cursor_image)
return;
screenshot_region = cairo_region_create_rectangle (&area);
if (!cairo_region_contains_point (screenshot_region, cursor_image->x, cursor_image->y))
{
XFree (cursor_image);
cairo_region_destroy (screenshot_region);
return;
}
cursor_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, cursor_image->width, cursor_image->height);
/* The pixel data (in typical Xlib breakage) is longs even on
* 64-bit platforms, so we have to data-convert there. For simplicity,
* just do it always
*/
data = cairo_image_surface_get_data (cursor_surface);
stride = cairo_image_surface_get_stride (cursor_surface);
for (i = 0; i < cursor_image->height; i++)
for (j = 0; j < cursor_image->width; j++)
*(guint32 *)(data + i * stride + 4 * j) = cursor_image->pixels[i * cursor_image->width + j];
cairo_surface_mark_dirty (cursor_surface);
cr = cairo_create (surface);
cairo_set_source_surface (cr,
cursor_surface,
cursor_image->x - cursor_image->xhot - area.x,
cursor_image->y - cursor_image->yhot - area.y);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (cursor_surface);
cairo_region_destroy (screenshot_region);
XFree (cursor_image);
}
static void
grab_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
MetaScreen *screen = cinnamon_global_get_screen (screenshot_data->screenshot->global);
int width, height;
GSimpleAsyncResult *result;
meta_screen_get_size (screen, &width, &height);
do_grab_screenshot (screenshot_data, 0, 0, width, height);
if (meta_screen_get_n_monitors (screen) > 1)
{
cairo_region_t *screen_region = cairo_region_create ();
cairo_region_t *stage_region;
MetaRectangle monitor_rect;
cairo_rectangle_int_t stage_rect;
int i;
cairo_t *cr;
for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
{
meta_screen_get_monitor_geometry (screen, i, &monitor_rect);
cairo_region_union_rectangle (screen_region, (const cairo_rectangle_int_t *) &monitor_rect);
}
stage_rect.x = 0;
stage_rect.y = 0;
stage_rect.width = width;
stage_rect.height = height;
stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
cairo_region_xor (stage_region, screen_region);
cairo_region_destroy (screen_region);
cr = cairo_create (screenshot_data->image);
for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (stage_region, i, &rect);
cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_region_destroy (stage_region);
}
screenshot_data->screenshot_area.x = 0;
screenshot_data->screenshot_area.y = 0;
screenshot_data->screenshot_area.width = width;
screenshot_data->screenshot_area.height = height;
if (screenshot_data->include_cursor)
_draw_cursor_image (screenshot_data->image, screenshot_data->screenshot_area);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_screenshot, (gpointer)screenshot_data);
result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_screenshot);
g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
g_object_unref (result);
}
static void
grab_area_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
GSimpleAsyncResult *result;
do_grab_screenshot (screenshot_data,
screenshot_data->screenshot_area.x,
screenshot_data->screenshot_area.y,
screenshot_data->screenshot_area.width,
screenshot_data->screenshot_area.height);
if (screenshot_data->include_cursor)
_draw_cursor_image (screenshot_data->image, screenshot_data->screenshot_area);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_area_screenshot, (gpointer)screenshot_data);
result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_area_screenshot);
g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
g_object_unref (result);
}
/**
* cinnamon_screenshot_screenshot:
* @screenshot: the #CinnamonScreenshot
* @include_cursor: Whether to include the cursor or not
* @filename: The filename for the screenshot
* @callback: (scope async): function to call returning success or failure
* of the async grabbing
*
* Takes a screenshot of the whole screen
* in @filename as png image.
*
*/
void
cinnamon_screenshot_screenshot (CinnamonScreenshot *screenshot,
gboolean include_cursor,
const char *filename,
CinnamonScreenshotCallback callback)
{
ClutterActor *stage;
_screenshot_data *data = g_new0 (_screenshot_data, 1);
data->screenshot = g_object_ref (screenshot);
data->filename = g_strdup (filename);
data->callback = callback;
data->include_cursor = include_cursor;
stage = CLUTTER_ACTOR (cinnamon_global_get_stage (screenshot->global));
g_signal_connect_after (stage, "paint", G_CALLBACK (grab_screenshot), (gpointer)data);
clutter_actor_queue_redraw (stage);
}
/**
* cinnamon_screenshot_screenshot_area:
* @screenshot: the #CinnamonScreenshot
* @x: The X coordinate of the area
* @y: The Y coordinate of the area
* @width: The width of the area
* @height: The height of the area
* @filename: The filename for the screenshot
* @callback: (scope async): function to call returning success or failure
* of the async grabbing
*
* Takes a screenshot of the passed in area and saves it
* in @filename as png image.
*
*/
void
cinnamon_screenshot_screenshot_area (CinnamonScreenshot *screenshot,
gboolean include_cursor,
int x,
int y,
int width,
int height,
const char *filename,
CinnamonScreenshotCallback callback)
{
ClutterActor *stage;
_screenshot_data *data = g_new0 (_screenshot_data, 1);
data->screenshot = g_object_ref (screenshot);
data->filename = g_strdup (filename);
data->screenshot_area.x = x;
data->screenshot_area.y = y;
data->screenshot_area.width = width;
data->screenshot_area.height = height;
data->callback = callback;
data->include_cursor = include_cursor;
stage = CLUTTER_ACTOR (cinnamon_global_get_stage (screenshot->global));
g_signal_connect_after (stage, "paint", G_CALLBACK (grab_area_screenshot), (gpointer)data);
clutter_actor_queue_redraw (stage);
}
/**
* cinnamon_screenshot_screenshot_window:
* @screenshot: the #CinnamonScreenshot
* @include_frame: Whether to include the frame or not
* @include_cursor: Whether to include the cursor or not
* @filename: The filename for the screenshot
* @callback: (scope async): function to call returning success or failure
* of the async grabbing
*
* Takes a screenshot of the focused window (optionally omitting the frame)
* in @filename as png image.
*
*/
void
cinnamon_screenshot_screenshot_window (CinnamonScreenshot *screenshot,
gboolean include_frame,
gboolean include_cursor,
const char *filename,
CinnamonScreenshotCallback callback)
{
GSimpleAsyncResult *result;
_screenshot_data *screenshot_data = g_new0 (_screenshot_data, 1);
MetaScreen *screen = cinnamon_global_get_screen (screenshot->global);
MetaDisplay *display = meta_screen_get_display (screen);
MetaWindow *window = meta_display_get_focus_window (display);
ClutterActor *window_actor;
gfloat actor_x, actor_y;
MetaShapedTexture *stex;
MetaRectangle rect;
cairo_rectangle_int_t clip;
screenshot_data->screenshot = g_object_ref (screenshot);
screenshot_data->filename = g_strdup (filename);
screenshot_data->callback = callback;
window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window));
clutter_actor_get_position (window_actor, &actor_x, &actor_y);
if (include_frame || !meta_window_get_frame (window))
{
meta_window_get_outer_rect (window, &rect);
screenshot_data->screenshot_area.x = rect.x;
screenshot_data->screenshot_area.y = rect.y;
clip.x = rect.x - (gint) actor_x;
clip.y = rect.y - (gint) actor_y;
}
else
{
rect = *meta_window_get_rect (window);
screenshot_data->screenshot_area.x = (gint) actor_x + rect.x;
screenshot_data->screenshot_area.y = (gint) actor_y + rect.y;
clip.x = rect.x;
clip.y = rect.y;
}
clip.width = screenshot_data->screenshot_area.width = rect.width;
clip.height = screenshot_data->screenshot_area.height = rect.height;
stex = META_SHAPED_TEXTURE (meta_window_actor_get_texture (META_WINDOW_ACTOR (window_actor)));
screenshot_data->image = meta_shaped_texture_get_image (stex, &clip);
if (include_cursor)
_draw_cursor_image (screenshot_data->image, screenshot_data->screenshot_area);
result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, cinnamon_screenshot_screenshot_window);
g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
g_object_unref (result);
}
CinnamonScreenshot *
cinnamon_screenshot_new (void)
{
return g_object_new (CINNAMON_TYPE_SCREENSHOT, NULL);
}
Jump to Line
Something went wrong with that request. Please try again.