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cursor-tracker: Split the code that loads MetaCursorReferences out

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The plan here is to move the usage of these interfaces to the consumer,
and then slam the code into backends.
This commit is contained in:
Jasper St. Pierre 2014-03-31 15:21:19 -04:00
parent 863569b702
commit 21425b5833
4 changed files with 395 additions and 371 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
src/core/meta-cursor-tracker-private.h
View File

@ -25,6 +25,58 @@
#include <meta/meta-cursor-tracker.h>
#include <wayland-server.h>
#include "meta-cursor.h"
struct _MetaCursorTracker {
GObject parent_instance;
MetaScreen *screen;
gboolean is_showing;
gboolean has_hw_cursor;
/* The cursor tracker stores the cursor for the current grab
* operation, the cursor for the window with pointer focus, and
* the cursor for the root window, which contains either the
* default arrow cursor or the 'busy' hourglass if we're launching
* an app.
*
* We choose the first one available -- if there's a grab cursor,
* we choose that cursor, if there's window cursor, we choose that,
* otherwise we choose the root cursor.
*
* The displayed_cursor contains the chosen cursor.
*/
MetaCursorReference *displayed_cursor;
MetaCursorReference *grab_cursor;
/* Wayland clients can set a NULL buffer as their cursor
* explicitly, which means that we shouldn't display anything.
* So, we can't simply store a NULL in window_cursor to
* determine an unset window cursor; we need an extra boolean.
*/
gboolean has_window_cursor;
MetaCursorReference *window_cursor;
MetaCursorReference *root_cursor;
MetaCursorReference *default_cursors[META_CURSOR_LAST];
int current_x, current_y;
MetaRectangle current_rect;
MetaRectangle previous_rect;
gboolean previous_is_valid;
CoglPipeline *pipeline;
int drm_fd;
struct gbm_device *gbm;
};
struct _MetaCursorTrackerClass {
GObjectClass parent_class;
};
gboolean meta_cursor_tracker_handle_xevent (MetaCursorTracker *tracker,
XEvent *xevent);

371
src/core/meta-cursor-tracker.c
View File

@ -41,10 +41,6 @@
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <X11/cursorfont.h>
#include <X11/extensions/Xfixes.h>
#include <X11/Xcursor/Xcursor.h>
#include "meta-cursor-private.h"
#include "meta-cursor-tracker-private.h"
#include "screen-private.h"
@ -52,56 +48,6 @@
#include "wayland/meta-wayland-private.h"
struct _MetaCursorTracker {
GObject parent_instance;
MetaScreen *screen;
gboolean is_showing;
gboolean has_hw_cursor;
/* The cursor tracker stores the cursor for the current grab
* operation, the cursor for the window with pointer focus, and
* the cursor for the root window, which contains either the
* default arrow cursor or the 'busy' hourglass if we're launching
* an app.
*
* We choose the first one available -- if there's a grab cursor,
* we choose that cursor, if there's window cursor, we choose that,
* otherwise we choose the root cursor.
*
* The displayed_cursor contains the chosen cursor.
*/
MetaCursorReference *displayed_cursor;
MetaCursorReference *grab_cursor;
/* Wayland clients can set a NULL buffer as their cursor
* explicitly, which means that we shouldn't display anything.
* So, we can't simply store a NULL in window_cursor to
* determine an unset window cursor; we need an extra boolean.
*/
gboolean has_window_cursor;
MetaCursorReference *window_cursor;
MetaCursorReference *root_cursor;
MetaCursorReference *default_cursors[META_CURSOR_LAST];
int current_x, current_y;
MetaRectangle current_rect;
MetaRectangle previous_rect;
gboolean previous_is_valid;
CoglPipeline *pipeline;
int drm_fd;
struct gbm_device *gbm;
};
struct _MetaCursorTrackerClass {
GObjectClass parent_class;
};
G_DEFINE_TYPE (MetaCursorTracker, meta_cursor_tracker, G_TYPE_OBJECT);
enum {
@ -116,323 +62,6 @@ static void meta_cursor_tracker_set_crtc_has_hw_cursor (MetaCursorTracker *track
gboolean has_hw_cursor);
static void sync_cursor (MetaCursorTracker *tracker);
static void
translate_meta_cursor (MetaCursor cursor,
guint *glyph_out,
const char **name_out)
{
guint glyph = XC_num_glyphs;
const char *name = NULL;
switch (cursor)
{
case META_CURSOR_DEFAULT:
glyph = XC_left_ptr;
break;
case META_CURSOR_NORTH_RESIZE:
glyph = XC_top_side;
break;
case META_CURSOR_SOUTH_RESIZE:
glyph = XC_bottom_side;
break;
case META_CURSOR_WEST_RESIZE:
glyph = XC_left_side;
break;
case META_CURSOR_EAST_RESIZE:
glyph = XC_right_side;
break;
case META_CURSOR_SE_RESIZE:
glyph = XC_bottom_right_corner;
break;
case META_CURSOR_SW_RESIZE:
glyph = XC_bottom_left_corner;
break;
case META_CURSOR_NE_RESIZE:
glyph = XC_top_right_corner;
break;
case META_CURSOR_NW_RESIZE:
glyph = XC_top_left_corner;
break;
case META_CURSOR_MOVE_OR_RESIZE_WINDOW:
glyph = XC_fleur;
break;
case META_CURSOR_BUSY:
glyph = XC_watch;
break;
case META_CURSOR_DND_IN_DRAG:
name = "dnd-none";
break;
case META_CURSOR_DND_MOVE:
name = "dnd-move";
break;
case META_CURSOR_DND_COPY:
name = "dnd-copy";
break;
case META_CURSOR_DND_UNSUPPORTED_TARGET:
name = "dnd-none";
break;
case META_CURSOR_POINTING_HAND:
glyph = XC_hand2;
break;
case META_CURSOR_CROSSHAIR:
glyph = XC_crosshair;
break;
case META_CURSOR_IBEAM:
glyph = XC_xterm;
break;
default:
g_assert_not_reached ();
glyph = 0; /* silence compiler */
break;
}
*glyph_out = glyph;
*name_out = name;
}
static Cursor
load_cursor_on_server (MetaDisplay *display,
MetaCursor cursor)
{
Cursor xcursor;
guint glyph;
const char *name;
translate_meta_cursor (cursor, &glyph, &name);
if (name != NULL)
xcursor = XcursorLibraryLoadCursor (display->xdisplay, name);
else
xcursor = XCreateFontCursor (display->xdisplay, glyph);
return xcursor;
}
Cursor
meta_display_create_x_cursor (MetaDisplay *display,
MetaCursor cursor)
{
return load_cursor_on_server (display, cursor);
}
static XcursorImage *
load_cursor_on_client (MetaDisplay *display,
MetaCursor cursor)
{
XcursorImage *image;
guint glyph;
const char *name;
const char *theme = XcursorGetTheme (display->xdisplay);
int size = XcursorGetDefaultSize (display->xdisplay);
translate_meta_cursor (cursor, &glyph, &name);
if (name != NULL)
image = XcursorLibraryLoadImage (name, theme, size);
else
image = XcursorShapeLoadImage (glyph, theme, size);
return image;
}
static MetaCursorReference *
meta_cursor_reference_from_theme (MetaCursorTracker *tracker,
MetaCursor cursor)
{
XcursorImage *image;
int width, height, rowstride;
CoglPixelFormat cogl_format;
uint32_t gbm_format;
ClutterBackend *clutter_backend;
CoglContext *cogl_context;
MetaCursorReference *self;
image = load_cursor_on_client (tracker->screen->display, cursor);
if (!image)
return NULL;
width = image->width;
height = image->height;
rowstride = width * 4;
gbm_format = GBM_FORMAT_ARGB8888;
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888;
#else
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
#endif
self = g_slice_new0 (MetaCursorReference);
self->ref_count = 1;
self->hot_x = image->xhot;
self->hot_y = image->yhot;
clutter_backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (clutter_backend);
self->texture = cogl_texture_2d_new_from_data (cogl_context,
width, height,
cogl_format,
rowstride,
(uint8_t*)image->pixels,
NULL);
if (tracker->gbm)
{
if (width > 64 || height > 64)
{
meta_warning ("Invalid theme cursor size (must be at most 64x64)\n");
goto out;
}
if (gbm_device_is_format_supported (tracker->gbm, gbm_format,
GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE))
{
uint32_t buf[64 * 64];
int i;
self->bo = gbm_bo_create (tracker->gbm, 64, 64,
gbm_format, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE);
memset (buf, 0, sizeof(buf));
for (i = 0; i < height; i++)
memcpy (buf + i * 64, image->pixels + i * width, width * 4);
gbm_bo_write (self->bo, buf, 64 * 64 * 4);
}
else
meta_warning ("HW cursor for format %d not supported\n", gbm_format);
}
out:
XcursorImageDestroy (image);
return self;
}
static MetaCursorReference *
meta_cursor_reference_from_buffer (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y)
{
ClutterBackend *backend;
CoglContext *cogl_context;
MetaCursorReference *self;
CoglPixelFormat cogl_format;
struct wl_shm_buffer *shm_buffer;
uint32_t gbm_format;
self = g_slice_new0 (MetaCursorReference);
self->ref_count = 1;
self->hot_x = hot_x;
self->hot_y = hot_y;
backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (backend);
shm_buffer = wl_shm_buffer_get (buffer);
if (shm_buffer)
{
int rowstride = wl_shm_buffer_get_stride (shm_buffer);
int width = wl_shm_buffer_get_width (shm_buffer);
int height = wl_shm_buffer_get_height (shm_buffer);
switch (wl_shm_buffer_get_format (shm_buffer))
{
#if G_BYTE_ORDER == G_BIG_ENDIAN
case WL_SHM_FORMAT_ARGB8888:
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
gbm_format = GBM_FORMAT_ARGB8888;
break;
case WL_SHM_FORMAT_XRGB8888:
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
gbm_format = GBM_FORMAT_XRGB8888;
break;
#else
case WL_SHM_FORMAT_ARGB8888:
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
gbm_format = GBM_FORMAT_ARGB8888;
break;
case WL_SHM_FORMAT_XRGB8888:
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888;
gbm_format = GBM_FORMAT_XRGB8888;
break;
#endif
default:
g_warn_if_reached ();
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
gbm_format = GBM_FORMAT_ARGB8888;
}
self->texture = cogl_texture_2d_new_from_data (cogl_context,
width, height,
cogl_format,
rowstride,
wl_shm_buffer_get_data (shm_buffer),
NULL);
if (width > 64 || height > 64)
{
meta_warning ("Invalid cursor size (must be at most 64x64), falling back to software (GL) cursors\n");
return self;
}
if (tracker->gbm)
{
if (gbm_device_is_format_supported (tracker->gbm, gbm_format,
GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE))
{
uint8_t *data;
uint8_t buf[4 * 64 * 64];
int i;
self->bo = gbm_bo_create (tracker->gbm, 64, 64,
gbm_format, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE);
data = wl_shm_buffer_get_data (shm_buffer);
memset (buf, 0, sizeof(buf));
for (i = 0; i < height; i++)
memcpy (buf + i * 4 * 64, data + i * rowstride, 4 * width);
gbm_bo_write (self->bo, buf, 64 * 64 * 4);
}
else
meta_warning ("HW cursor for format %d not supported\n", gbm_format);
}
}
else
{
int width, height;
self->texture = cogl_wayland_texture_2d_new_from_buffer (cogl_context, buffer, NULL);
width = cogl_texture_get_width (COGL_TEXTURE (self->texture));
height = cogl_texture_get_height (COGL_TEXTURE (self->texture));
/* HW cursors must be 64x64, but 64x64 is huge, and no cursor theme actually uses
that, so themed cursors must be padded with transparent pixels to fill the
overlay. This is trivial if we have CPU access to the data, but it's not
possible if the buffer is in GPU memory (and possibly tiled too), so if we
don't get the right size, we fallback to GL.
*/
if (width != 64 || height != 64)
{
meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
return self;
}
if (tracker->gbm)
{
self->bo = gbm_bo_import (tracker->gbm, GBM_BO_IMPORT_WL_BUFFER,
buffer, GBM_BO_USE_CURSOR_64X64);
if (!self->bo)
meta_warning ("Importing HW cursor from wl_buffer failed\n");
}
}
return self;
}
static void
meta_cursor_tracker_init (MetaCursorTracker *self)
{

331
src/core/meta-cursor.c
View File

@ -23,6 +23,20 @@
#include "meta-cursor-private.h"
#include <meta/errors.h>
#include "display-private.h"
#include "screen-private.h"
#include "meta-cursor-tracker-private.h" /* for tracker->gbm */
#include <string.h>
#include <X11/cursorfont.h>
#include <X11/extensions/Xfixes.h>
#include <X11/Xcursor/Xcursor.h>
#include <cogl/cogl-wayland-server.h>
MetaCursorReference *
meta_cursor_reference_ref (MetaCursorReference *self)
{
@ -46,3 +60,320 @@ meta_cursor_reference_unref (MetaCursorReference *self)
g_slice_free (MetaCursorReference, self);
}
}
static void
translate_meta_cursor (MetaCursor cursor,
guint *glyph_out,
const char **name_out)
{
guint glyph = XC_num_glyphs;
const char *name = NULL;
switch (cursor)
{
case META_CURSOR_DEFAULT:
glyph = XC_left_ptr;
break;
case META_CURSOR_NORTH_RESIZE:
glyph = XC_top_side;
break;
case META_CURSOR_SOUTH_RESIZE:
glyph = XC_bottom_side;
break;
case META_CURSOR_WEST_RESIZE:
glyph = XC_left_side;
break;
case META_CURSOR_EAST_RESIZE:
glyph = XC_right_side;
break;
case META_CURSOR_SE_RESIZE:
glyph = XC_bottom_right_corner;
break;
case META_CURSOR_SW_RESIZE:
glyph = XC_bottom_left_corner;
break;
case META_CURSOR_NE_RESIZE:
glyph = XC_top_right_corner;
break;
case META_CURSOR_NW_RESIZE:
glyph = XC_top_left_corner;
break;
case META_CURSOR_MOVE_OR_RESIZE_WINDOW:
glyph = XC_fleur;
break;
case META_CURSOR_BUSY:
glyph = XC_watch;
break;
case META_CURSOR_DND_IN_DRAG:
name = "dnd-none";
break;
case META_CURSOR_DND_MOVE:
name = "dnd-move";
break;
case META_CURSOR_DND_COPY:
name = "dnd-copy";
break;
case META_CURSOR_DND_UNSUPPORTED_TARGET:
name = "dnd-none";
break;
case META_CURSOR_POINTING_HAND:
glyph = XC_hand2;
break;
case META_CURSOR_CROSSHAIR:
glyph = XC_crosshair;
break;
case META_CURSOR_IBEAM:
glyph = XC_xterm;
break;
default:
g_assert_not_reached ();
glyph = 0; /* silence compiler */
break;
}
*glyph_out = glyph;
*name_out = name;
}
static Cursor
load_cursor_on_server (MetaDisplay *display,
MetaCursor cursor)
{
Cursor xcursor;
guint glyph;
const char *name;
translate_meta_cursor (cursor, &glyph, &name);
if (name != NULL)
xcursor = XcursorLibraryLoadCursor (display->xdisplay, name);
else
xcursor = XCreateFontCursor (display->xdisplay, glyph);
return xcursor;
}
Cursor
meta_display_create_x_cursor (MetaDisplay *display,
MetaCursor cursor)
{
return load_cursor_on_server (display, cursor);
}
static XcursorImage *
load_cursor_on_client (MetaDisplay *display,
MetaCursor cursor)
{
XcursorImage *image;
guint glyph;
const char *name;
const char *theme = XcursorGetTheme (display->xdisplay);
int size = XcursorGetDefaultSize (display->xdisplay);
translate_meta_cursor (cursor, &glyph, &name);
if (name != NULL)
image = XcursorLibraryLoadImage (name, theme, size);
else
image = XcursorShapeLoadImage (glyph, theme, size);
return image;
}
MetaCursorReference *
meta_cursor_reference_from_theme (MetaCursorTracker *tracker,
MetaCursor cursor)
{
XcursorImage *image;
int width, height, rowstride;
CoglPixelFormat cogl_format;
uint32_t gbm_format;
ClutterBackend *clutter_backend;
CoglContext *cogl_context;
MetaCursorReference *self;
image = load_cursor_on_client (tracker->screen->display, cursor);
if (!image)
return NULL;
width = image->width;
height = image->height;
rowstride = width * 4;
gbm_format = GBM_FORMAT_ARGB8888;
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888;
#else
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
#endif
self = g_slice_new0 (MetaCursorReference);
self->ref_count = 1;
self->hot_x = image->xhot;
self->hot_y = image->yhot;
clutter_backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (clutter_backend);
self->texture = cogl_texture_2d_new_from_data (cogl_context,
width, height,
cogl_format,
rowstride,
(uint8_t*)image->pixels,
NULL);
if (tracker->gbm)
{
if (width > 64 || height > 64)
{
meta_warning ("Invalid theme cursor size (must be at most 64x64)\n");
goto out;
}
if (gbm_device_is_format_supported (tracker->gbm, gbm_format,
GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE))
{
uint32_t buf[64 * 64];
int i;
self->bo = gbm_bo_create (tracker->gbm, 64, 64,
gbm_format, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE);
memset (buf, 0, sizeof(buf));
for (i = 0; i < height; i++)
memcpy (buf + i * 64, image->pixels + i * width, width * 4);
gbm_bo_write (self->bo, buf, 64 * 64 * 4);
}
else
meta_warning ("HW cursor for format %d not supported\n", gbm_format);
}
out:
XcursorImageDestroy (image);
return self;
}
MetaCursorReference *
meta_cursor_reference_from_buffer (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y)
{
ClutterBackend *backend;
CoglContext *cogl_context;
MetaCursorReference *self;
CoglPixelFormat cogl_format;
struct wl_shm_buffer *shm_buffer;
uint32_t gbm_format;
self = g_slice_new0 (MetaCursorReference);
self->ref_count = 1;
self->hot_x = hot_x;
self->hot_y = hot_y;
backend = clutter_get_default_backend ();
cogl_context = clutter_backend_get_cogl_context (backend);
shm_buffer = wl_shm_buffer_get (buffer);
if (shm_buffer)
{
int rowstride = wl_shm_buffer_get_stride (shm_buffer);
int width = wl_shm_buffer_get_width (shm_buffer);
int height = wl_shm_buffer_get_height (shm_buffer);
switch (wl_shm_buffer_get_format (shm_buffer))
{
#if G_BYTE_ORDER == G_BIG_ENDIAN
case WL_SHM_FORMAT_ARGB8888:
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888_PRE;
gbm_format = GBM_FORMAT_ARGB8888;
break;
case WL_SHM_FORMAT_XRGB8888:
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
gbm_format = GBM_FORMAT_XRGB8888;
break;
#else
case WL_SHM_FORMAT_ARGB8888:
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888_PRE;
gbm_format = GBM_FORMAT_ARGB8888;
break;
case WL_SHM_FORMAT_XRGB8888:
cogl_format = COGL_PIXEL_FORMAT_BGRA_8888;
gbm_format = GBM_FORMAT_XRGB8888;
break;
#endif
default:
g_warn_if_reached ();
cogl_format = COGL_PIXEL_FORMAT_ARGB_8888;
gbm_format = GBM_FORMAT_ARGB8888;
}
self->texture = cogl_texture_2d_new_from_data (cogl_context,
width, height,
cogl_format,
rowstride,
wl_shm_buffer_get_data (shm_buffer),
NULL);
if (width > 64 || height > 64)
{
meta_warning ("Invalid cursor size (must be at most 64x64), falling back to software (GL) cursors\n");
return self;
}
if (tracker->gbm)
{
if (gbm_device_is_format_supported (tracker->gbm, gbm_format,
GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE))
{
uint8_t *data;
uint8_t buf[4 * 64 * 64];
int i;
self->bo = gbm_bo_create (tracker->gbm, 64, 64,
gbm_format, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE);
data = wl_shm_buffer_get_data (shm_buffer);
memset (buf, 0, sizeof(buf));
for (i = 0; i < height; i++)
memcpy (buf + i * 4 * 64, data + i * rowstride, 4 * width);
gbm_bo_write (self->bo, buf, 64 * 64 * 4);
}
else
meta_warning ("HW cursor for format %d not supported\n", gbm_format);
}
}
else
{
int width, height;
self->texture = cogl_wayland_texture_2d_new_from_buffer (cogl_context, buffer, NULL);
width = cogl_texture_get_width (COGL_TEXTURE (self->texture));
height = cogl_texture_get_height (COGL_TEXTURE (self->texture));
/* HW cursors must be 64x64, but 64x64 is huge, and no cursor theme actually uses
that, so themed cursors must be padded with transparent pixels to fill the
overlay. This is trivial if we have CPU access to the data, but it's not
possible if the buffer is in GPU memory (and possibly tiled too), so if we
don't get the right size, we fallback to GL.
*/
if (width != 64 || height != 64)
{
meta_warning ("Invalid cursor size (must be 64x64), falling back to software (GL) cursors\n");
return self;
}
if (tracker->gbm)
{
self->bo = gbm_bo_import (tracker->gbm, GBM_BO_IMPORT_WL_BUFFER,
buffer, GBM_BO_USE_CURSOR_64X64);
if (!self->bo)
meta_warning ("Importing HW cursor from wl_buffer failed\n");
}
}
return self;
}

12
src/core/meta-cursor.h
View File

@ -27,4 +27,16 @@ typedef struct _MetaCursorReference MetaCursorReference;
MetaCursorReference * meta_cursor_reference_ref (MetaCursorReference *cursor);
void meta_cursor_reference_unref (MetaCursorReference *cursor);
#include <meta/meta-cursor-tracker.h>
#include <meta/common.h>
#include <wayland-server.h>
MetaCursorReference * meta_cursor_reference_from_theme (MetaCursorTracker *tracker,
MetaCursor cursor);
MetaCursorReference * meta_cursor_reference_from_buffer (MetaCursorTracker *tracker,
struct wl_resource *buffer,
int hot_x,
int hot_y);
#endif /* META_CURSOR_H */