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display: Fix cursor sprite sizes with fractional scales

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This makes the cursor size match the expectation given by the theme
size. It also means the sprite size now matches GTK4 provided cursor
surfaces using wp_viewport.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3859>
This commit is contained in:
Jonas Ådahl 2024-11-21 17:14:12 +01:00 committed by Sebastian Wick
parent 8fc1bddf3b
commit f77d8e2a12
3 changed files with 36 additions and 4 deletions
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25
src/backends/meta-cursor-sprite-xcursor.c
View File

@ -247,9 +247,11 @@ load_from_current_xcursor_image (MetaCursorSpriteXcursor *sprite_xcursor)
if (meta_is_wayland_compositor ())
{
hotspot_x = ((int) (xc_image->xhot / sprite_xcursor->theme_scale) *
hotspot_x = ((int) roundf ((float) xc_image->xhot /
sprite_xcursor->theme_scale) *
sprite_xcursor->theme_scale);
hotspot_y = ((int) (xc_image->yhot / sprite_xcursor->theme_scale) *
hotspot_y = ((int) roundf ((float) xc_image->yhot /
sprite_xcursor->theme_scale) *
sprite_xcursor->theme_scale);
}
else
@ -273,6 +275,25 @@ meta_cursor_sprite_xcursor_set_theme_scale (MetaCursorSpriteXcursor *sprite_xcur
sprite_xcursor->theme_scale = theme_scale;
}
void
meta_cursor_sprite_xcursor_get_scaled_image_size (MetaCursorSpriteXcursor *sprite_xcursor,
int *width,
int *height)
{
XcursorImage *current_image;
int theme_size;
int image_size;
float effective_theme_scale;
current_image = meta_cursor_sprite_xcursor_get_current_image (sprite_xcursor);
theme_size = meta_prefs_get_cursor_size ();
image_size = current_image->size;
effective_theme_scale = (float) theme_size / image_size;
*width = (int) ceilf (current_image->width * effective_theme_scale);
*height = (int) ceilf (current_image->width * effective_theme_scale);
}
static gboolean
meta_cursor_sprite_xcursor_is_animated (MetaCursorSprite *sprite)
{

4
src/backends/meta-cursor-sprite-xcursor.h
View File

@ -38,6 +38,10 @@ MetaCursor meta_cursor_sprite_xcursor_get_cursor (MetaCursorSpriteXcursor *sprit
XcursorImage * meta_cursor_sprite_xcursor_get_current_image (MetaCursorSpriteXcursor *sprite_xcursor);
void meta_cursor_sprite_xcursor_get_scaled_image_size (MetaCursorSpriteXcursor *sprite_xcursor,
int *width,
int *height);
META_EXPORT_TEST
const char * meta_cursor_get_name (MetaCursor cursor);

11
src/core/display.c
View File

@ -1697,12 +1697,19 @@ root_cursor_prepare_at (MetaCursorSpriteXcursor *sprite_xcursor,
if (best_scale != 0.0f)
{
float ceiled_scale;
int cursor_width, cursor_height;
ceiled_scale = ceilf (best_scale);
meta_cursor_sprite_xcursor_set_theme_scale (sprite_xcursor,
(int) ceiled_scale);
meta_cursor_sprite_set_texture_scale (cursor_sprite,
1.0f / ceiled_scale);
meta_cursor_sprite_realize_texture (cursor_sprite);
meta_cursor_sprite_xcursor_get_scaled_image_size (sprite_xcursor,
&cursor_width,
&cursor_height);
meta_cursor_sprite_set_viewport_dst_size (cursor_sprite,
cursor_width,
cursor_height);
}
}
else