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display-picture: Split guest absolute position into a helper

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Will be shared with touch events in the next commit
This commit is contained in:
Bilal Elmoussaoui 2023-06-15 13:47:20 +02:00
parent b99b6b42b4
commit f8a8b61171
1 changed files with 52 additions and 22 deletions
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74
lib/mks-display-picture.c
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@ -173,6 +173,55 @@ mks_display_picture_mouse_release_cb (GObject *object,
g_warning ("Mouse release failed: %s", error->message);
}
static gboolean
mks_display_picture_event_get_guest_position (MksDisplayPicture *self,
GdkEvent *event,
double *guest_x,
double *guest_y)
{
GdkPaintable *paintable;
GtkNative *native;
int guest_width, guest_height;
graphene_rect_t area;
graphene_point_t translated;
double translate_x, translate_y;
double x, y;
g_assert (MKS_IS_DISPLAY_PICTURE (self));
g_assert (GDK_IS_EVENT (event));
paintable = GDK_PAINTABLE (self->paintable);
native = gtk_widget_get_native (GTK_WIDGET (self));
guest_width = gdk_paintable_get_intrinsic_width (paintable);
guest_height = gdk_paintable_get_intrinsic_height (paintable);
area = GRAPHENE_RECT_INIT (0, 0,
gtk_widget_get_width (GTK_WIDGET (self)),
gtk_widget_get_height (GTK_WIDGET (self)));
gtk_native_get_surface_transform (native, &translate_x, &translate_y);
if (gdk_event_get_position (event, &x, &y))
{
x -= translate_x;
y -= translate_y;
if (!gtk_widget_compute_point (GTK_WIDGET (native),
GTK_WIDGET (self),
&GRAPHENE_POINT_INIT (x, y),
&translated))
return FALSE;
*guest_x = floor (translated.x) / area.size.width * guest_width;
*guest_y = floor (translated.y) / area.size.height * guest_height;
*guest_x = CLAMP (*guest_x, 0, guest_width);
*guest_y = CLAMP (*guest_y, 0, guest_width);
return TRUE;
}
return FALSE;
}
static gboolean
mks_display_picture_legacy_event_cb (MksDisplayPicture *self,
@ -183,7 +232,7 @@ mks_display_picture_legacy_event_cb (MksDisplayPicture *self,
GdkEventType event_type;
g_assert (MKS_IS_DISPLAY_PICTURE (self));
g_assert (event != NULL);
g_assert (GDK_IS_EVENT (event));
g_assert (GTK_IS_EVENT_CONTROLLER_LEGACY (controller));
if (self->keyboard == NULL || self->mouse == NULL || self->paintable == NULL)
@ -215,28 +264,9 @@ mks_display_picture_legacy_event_cb (MksDisplayPicture *self,
if (mks_mouse_get_is_absolute (self->mouse))
{
gdouble x, y;
if (gdk_event_get_position (event, &x, &y))
{
graphene_point_t translated;
double guest_x, guest_y;
x -= translate_x;
y -= translate_y;
if (!gtk_widget_compute_point (GTK_WIDGET (native),
GTK_WIDGET (self),
&GRAPHENE_POINT_INIT (x, y),
&translated))
break;
guest_x = floor (translated.x) / area.size.width * guest_width;
guest_y = floor (translated.y) / area.size.height * guest_height;
guest_x = CLAMP (guest_x, 0, guest_width);
guest_y = CLAMP (guest_y, 0, guest_width);
if (mks_display_picture_event_get_guest_position (self, event, &guest_x, &guest_y))
{
mks_mouse_move_to (self->mouse,
guest_x,
guest_y,