screenshot: Split into separate file / class
Split the screenshot functionality from ShellGlobal into its own class. https://bugzilla.gnome.org/show_bug.cgi?id=670086
This commit is contained in:
Adel Gadllah
@ -36,7 +36,6 @@
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#include "shell-global-private.h"
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#include "shell-jsapi-compat-private.h"
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#include "shell-perf-log.h"
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#include "shell-screen-grabber.h"
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#include "shell-window-tracker.h"
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#include "shell-wm.h"
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#include "st.h"
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@ -705,6 +704,17 @@ shell_global_set_stage_input_region (ShellGlobal *global,
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shell_global_set_stage_input_mode (global, global->input_mode);
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}
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/**
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* shell_global_get_stage:
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*
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* Return value: (transfer none): The default #ClutterStage
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*/
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ClutterStage *
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shell_global_get_stage (ShellGlobal *global)
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{
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return global->stage;
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}
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/**
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* shell_global_get_screen:
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*
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@ -1898,345 +1908,6 @@ shell_global_launch_calendar_server (ShellGlobal *global)
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g_free (calendar_server_exe);
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}
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static void
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on_screenshot_written (GObject *source,
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GAsyncResult *result,
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gpointer user_data)
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{
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_screenshot_data *screenshot_data = (_screenshot_data*) user_data;
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if (screenshot_data->callback)
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screenshot_data->callback (screenshot_data->global,
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g_simple_async_result_get_op_res_gboolean (G_SIMPLE_ASYNC_RESULT (result)),
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&screenshot_data->screenshot_area);
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cairo_surface_destroy (screenshot_data->image);
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g_free (screenshot_data->filename);
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g_free (screenshot_data);
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}
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static void
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write_screenshot_thread (GSimpleAsyncResult *result,
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GObject *object,
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GCancellable *cancellable)
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{
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cairo_status_t status;
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_screenshot_data *screenshot_data = g_async_result_get_user_data (G_ASYNC_RESULT (result));
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g_assert (screenshot_data != NULL);
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status = cairo_surface_write_to_png (screenshot_data->image, screenshot_data->filename);
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g_simple_async_result_set_op_res_gboolean (result, status == CAIRO_STATUS_SUCCESS);
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}
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static void
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do_grab_screenshot (_screenshot_data *screenshot_data,
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int x,
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int y,
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int width,
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int height)
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{
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ShellScreenGrabber *grabber;
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static const cairo_user_data_key_t key;
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guchar *data;
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grabber = shell_screen_grabber_new ();
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data = shell_screen_grabber_grab (grabber, x, y, width, height);
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g_object_unref (grabber);
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screenshot_data->image = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_RGB24,
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width, height, width * 4);
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cairo_surface_set_user_data (screenshot_data->image, &key,
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data, (cairo_destroy_func_t)g_free);
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}
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static void
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_draw_cursor_image (cairo_surface_t *surface,
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cairo_rectangle_int_t area)
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{
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XFixesCursorImage *cursor_image;
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cairo_surface_t *cursor_surface;
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cairo_region_t *screenshot_region;
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cairo_t *cr;
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guchar *data;
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int stride;
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int i, j;
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cursor_image = XFixesGetCursorImage (clutter_x11_get_default_display ());
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if (!cursor_image)
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return;
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screenshot_region = cairo_region_create_rectangle (&area);
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if (!cairo_region_contains_point (screenshot_region, cursor_image->x, cursor_image->y))
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{
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XFree (cursor_image);
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cairo_region_destroy (screenshot_region);
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return;
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}
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cursor_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, cursor_image->width, cursor_image->height);
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/* The pixel data (in typical Xlib breakage) is longs even on
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* 64-bit platforms, so we have to data-convert there. For simplicity,
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* just do it always
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*/
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data = cairo_image_surface_get_data (cursor_surface);
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stride = cairo_image_surface_get_stride (cursor_surface);
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for (i = 0; i < cursor_image->height; i++)
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for (j = 0; j < cursor_image->width; j++)
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*(guint32 *)(data + i * stride + 4 * j) = cursor_image->pixels[i * cursor_image->width + j];
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cairo_surface_mark_dirty (cursor_surface);
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cr = cairo_create (surface);
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cairo_set_source_surface (cr,
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cursor_surface,
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cursor_image->x - cursor_image->xhot - area.x,
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cursor_image->y - cursor_image->yhot - area.y);
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cairo_paint (cr);
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cairo_destroy (cr);
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cairo_surface_destroy (cursor_surface);
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cairo_region_destroy (screenshot_region);
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XFree (cursor_image);
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}
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static void
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grab_screenshot (ClutterActor *stage,
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_screenshot_data *screenshot_data)
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{
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MetaScreen *screen = shell_global_get_screen (screenshot_data->global);
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int width, height;
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GSimpleAsyncResult *result;
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meta_plugin_query_screen_size (screenshot_data->global->plugin, &width, &height);
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do_grab_screenshot (screenshot_data, 0, 0, width, height);
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if (meta_screen_get_n_monitors (screen) > 1)
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{
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cairo_region_t *screen_region = cairo_region_create ();
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cairo_region_t *stage_region;
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MetaRectangle monitor_rect;
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cairo_rectangle_int_t stage_rect;
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int i;
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cairo_t *cr;
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for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
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{
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meta_screen_get_monitor_geometry (screen, i, &monitor_rect);
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cairo_region_union_rectangle (screen_region, (const cairo_rectangle_int_t *) &monitor_rect);
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}
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stage_rect.x = 0;
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stage_rect.y = 0;
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stage_rect.width = width;
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stage_rect.height = height;
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stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
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cairo_region_xor (stage_region, screen_region);
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cairo_region_destroy (screen_region);
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cr = cairo_create (screenshot_data->image);
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for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
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{
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cairo_rectangle_int_t rect;
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cairo_region_get_rectangle (stage_region, i, &rect);
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cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
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cairo_fill (cr);
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}
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cairo_destroy (cr);
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cairo_region_destroy (stage_region);
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}
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screenshot_data->screenshot_area.x = 0;
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screenshot_data->screenshot_area.y = 0;
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screenshot_data->screenshot_area.width = width;
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screenshot_data->screenshot_area.height = height;
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if (screenshot_data->include_cursor)
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_draw_cursor_image (screenshot_data->image, screenshot_data->screenshot_area);
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g_signal_handlers_disconnect_by_func (stage, (void *)grab_screenshot, (gpointer)screenshot_data);
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result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_screenshot);
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g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
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g_object_unref (result);
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}
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static void
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grab_area_screenshot (ClutterActor *stage,
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_screenshot_data *screenshot_data)
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{
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GSimpleAsyncResult *result;
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do_grab_screenshot (screenshot_data,
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screenshot_data->screenshot_area.x,
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screenshot_data->screenshot_area.y,
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screenshot_data->screenshot_area.width,
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screenshot_data->screenshot_area.height);
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g_signal_handlers_disconnect_by_func (stage, (void *)grab_area_screenshot, (gpointer)screenshot_data);
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result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_area_screenshot);
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g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
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g_object_unref (result);
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}
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/**
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* shell_global_screenshot:
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* @global: the #ShellGlobal
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* @include_cursor: Whether to include the cursor or not
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* @filename: The filename for the screenshot
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* @callback: (scope async): function to call returning success or failure
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* of the async grabbing
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*
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* Takes a screenshot of the whole screen
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* in @filename as png image.
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*
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*/
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void
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shell_global_screenshot (ShellGlobal *global,
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gboolean include_cursor,
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const char *filename,
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ShellGlobalScreenshotCallback callback)
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{
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ClutterActor *stage;
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_screenshot_data *data = g_new0 (_screenshot_data, 1);
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data->global = global;
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data->filename = g_strdup (filename);
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data->callback = callback;
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data->include_cursor = include_cursor;
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stage = CLUTTER_ACTOR (meta_plugin_get_stage (global->plugin));
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g_signal_connect_after (stage, "paint", G_CALLBACK (grab_screenshot), (gpointer)data);
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clutter_actor_queue_redraw (stage);
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}
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/**
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* shell_global_screenshot_area:
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* @global: the #ShellGlobal
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* @x: The X coordinate of the area
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* @y: The Y coordinate of the area
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* @width: The width of the area
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* @height: The height of the area
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* @filename: The filename for the screenshot
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* @callback: (scope async): function to call returning success or failure
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* of the async grabbing
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*
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* Takes a screenshot of the passed in area and saves it
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* in @filename as png image.
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*
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*/
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void
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shell_global_screenshot_area (ShellGlobal *global,
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int x,
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int y,
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int width,
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int height,
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const char *filename,
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ShellGlobalScreenshotCallback callback)
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{
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ClutterActor *stage;
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_screenshot_data *data = g_new0 (_screenshot_data, 1);
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data->global = global;
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data->filename = g_strdup (filename);
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data->screenshot_area.x = x;
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data->screenshot_area.y = y;
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data->screenshot_area.width = width;
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data->screenshot_area.height = height;
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data->callback = callback;
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stage = CLUTTER_ACTOR (meta_plugin_get_stage (global->plugin));
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g_signal_connect_after (stage, "paint", G_CALLBACK (grab_area_screenshot), (gpointer)data);
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clutter_actor_queue_redraw (stage);
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}
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/**
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* shell_global_screenshot_window:
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* @global: the #ShellGlobal
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* @include_frame: Whether to include the frame or not
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* @include_cursor: Whether to include the cursor or not
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*
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* @filename: The filename for the screenshot
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* @callback: (scope async): function to call returning success or failure
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* of the async grabbing
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*
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* Takes a screenshot of the focused window (optionally omitting the frame)
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* in @filename as png image.
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*
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*/
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void
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shell_global_screenshot_window (ShellGlobal *global,
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gboolean include_frame,
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gboolean include_cursor,
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const char *filename,
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ShellGlobalScreenshotCallback callback)
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{
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GSimpleAsyncResult *result;
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_screenshot_data *screenshot_data = g_new0 (_screenshot_data, 1);
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MetaScreen *screen = meta_plugin_get_screen (global->plugin);
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MetaDisplay *display = meta_screen_get_display (screen);
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MetaWindow *window = meta_display_get_focus_window (display);
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ClutterActor *window_actor;
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gfloat actor_x, actor_y;
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MetaShapedTexture *stex;
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MetaRectangle rect;
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cairo_rectangle_int_t clip;
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screenshot_data->global = global;
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screenshot_data->filename = g_strdup (filename);
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screenshot_data->callback = callback;
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window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window));
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clutter_actor_get_position (window_actor, &actor_x, &actor_y);
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if (include_frame || !meta_window_get_frame (window))
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{
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meta_window_get_outer_rect (window, &rect);
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screenshot_data->screenshot_area.x = rect.x;
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screenshot_data->screenshot_area.y = rect.y;
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clip.x = rect.x - (gint) actor_x;
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clip.y = rect.y - (gint) actor_y;
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}
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else
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{
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rect = *meta_window_get_rect (window);
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screenshot_data->screenshot_area.x = (gint) actor_x + rect.x;
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screenshot_data->screenshot_area.y = (gint) actor_y + rect.y;
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clip.x = rect.x;
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clip.y = rect.y;
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}
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clip.width = screenshot_data->screenshot_area.width = rect.width;
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clip.height = screenshot_data->screenshot_area.height = rect.height;
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stex = META_SHAPED_TEXTURE (meta_window_actor_get_texture (META_WINDOW_ACTOR (window_actor)));
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screenshot_data->image = meta_shaped_texture_get_image (stex, &clip);
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if (include_cursor)
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_draw_cursor_image (screenshot_data->image, screenshot_data->screenshot_area);
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result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, shell_global_screenshot_window);
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g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
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g_object_unref (result);
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}
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/**
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* shell_global_get_session_type:
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* @global: The #ShellGlobal.
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Block a user