01824a6d4e
Traditionally, getter/setter functions have been considered a C convenience, and we therefore didn't bother to add them for many properties that are only consumed from JS. However now that gjs optimizes property accesses by calling the appropriate getter/setter instead, it makes sense to add them. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3620>
244 lines
7.7 KiB
C
244 lines
7.7 KiB
C
#include "config.h"
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#include "shell-workspace-background.h"
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#include "shell-global.h"
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#include <meta/meta-workspace-manager.h>
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#include <mtk/mtk.h>
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#define BACKGROUND_MARGIN 12
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enum
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{
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PROP_0,
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PROP_MONITOR_INDEX,
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PROP_STATE_ADJUSTMENT_VALUE,
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PROP_LAST
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};
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static GParamSpec *obj_props[PROP_LAST] = { NULL, };
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struct _ShellWorkspaceBackground
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{
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/*< private >*/
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StWidget parent_instance;
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int monitor_index;
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double state_adjustment_value;
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MtkRectangle work_area;
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MtkRectangle monitor_geometry;
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};
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G_DEFINE_TYPE (ShellWorkspaceBackground, shell_workspace_background, ST_TYPE_WIDGET);
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#define EPSILON (1e-10)
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static void
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on_workareas_changed (ShellWorkspaceBackground *self)
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{
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ShellGlobal *global = shell_global_get ();
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MetaDisplay *display = shell_global_get_display (global);
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MetaWorkspaceManager *workspace_manager = shell_global_get_workspace_manager (global);
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MetaWorkspace *workspace =
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meta_workspace_manager_get_workspace_by_index (workspace_manager, 0);
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meta_workspace_get_work_area_for_monitor (workspace,
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self->monitor_index,
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&self->work_area);
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meta_display_get_monitor_geometry (display,
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self->monitor_index,
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&self->monitor_geometry);
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}
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static void
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shell_workspace_background_allocate (ClutterActor *actor,
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const ClutterActorBox *box)
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{
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ShellWorkspaceBackground *self = SHELL_WORKSPACE_BACKGROUND (actor);
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ShellGlobal *global = shell_global_get ();
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ClutterStage *stage = shell_global_get_stage (global);
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StThemeContext *context = st_theme_context_get_for_stage (stage);
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
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ClutterActorBox scaled_box, my_box, content_box;
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ClutterActor *child;
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float content_width, content_height;
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float scaled_width, scaled_height;
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float x_scale, y_scale;
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float width, height;
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int left_offset, right_offset;
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int top_offset, bottom_offset;
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int scale_factor;
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scale_factor = st_theme_context_get_scale_factor (context);
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clutter_actor_box_get_size (box, &width, &height);
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scaled_height = height - BACKGROUND_MARGIN * 2 * scale_factor;
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scaled_width = (scaled_height / height) * width;
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scaled_box.x1 = box->x1 + (width - scaled_width) / 2;
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scaled_box.y1 = box->y1 + (height - scaled_height) / 2;
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clutter_actor_box_set_size (&scaled_box, scaled_width, scaled_height);
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clutter_actor_box_interpolate(box, &scaled_box,
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self->state_adjustment_value, &my_box);
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clutter_actor_set_allocation (actor, &my_box);
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st_theme_node_get_content_box (theme_node, &my_box, &content_box);
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child = clutter_actor_get_first_child (actor);
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clutter_actor_allocate (child, &content_box);
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clutter_actor_box_get_size (&content_box, &content_width, &content_height);
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x_scale = content_width / self->work_area.width;
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y_scale = content_height / self->work_area.height;
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left_offset = self->work_area.x - self->monitor_geometry.x;
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top_offset = self->work_area.y - self->monitor_geometry.y;
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right_offset = self->monitor_geometry.width - self->work_area.width - left_offset;
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bottom_offset = self->monitor_geometry.height - self->work_area.height - top_offset;
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clutter_actor_box_set_origin (&content_box,
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-left_offset * x_scale,
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-top_offset * y_scale);
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clutter_actor_box_set_size (&content_box,
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content_width + (left_offset + right_offset) * x_scale,
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content_height + (top_offset + bottom_offset) * y_scale);
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child = clutter_actor_get_first_child (child);
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clutter_actor_allocate (child, &content_box);
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}
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static void
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shell_workspace_background_constructed (GObject *object)
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{
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G_OBJECT_CLASS (shell_workspace_background_parent_class)->constructed (object);
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on_workareas_changed (SHELL_WORKSPACE_BACKGROUND (object));
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}
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static void
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shell_workspace_background_get_property (GObject *gobject,
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unsigned int property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ShellWorkspaceBackground *self = SHELL_WORKSPACE_BACKGROUND (gobject);
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switch (property_id)
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{
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case PROP_MONITOR_INDEX:
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g_value_set_int (value, self->monitor_index);
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break;
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case PROP_STATE_ADJUSTMENT_VALUE:
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g_value_set_double (value, self->state_adjustment_value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
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}
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}
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static void
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shell_workspace_background_set_property (GObject *gobject,
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unsigned int property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ShellWorkspaceBackground *self = SHELL_WORKSPACE_BACKGROUND (gobject);
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switch (property_id)
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{
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case PROP_MONITOR_INDEX:
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self->monitor_index = g_value_get_int (value);
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break;
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case PROP_STATE_ADJUSTMENT_VALUE:
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shell_workspace_background_set_state_adjustment_value (self, g_value_get_double (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);
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}
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}
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static void
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shell_workspace_background_class_init (ShellWorkspaceBackgroundClass *klass)
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{
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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actor_class->allocate = shell_workspace_background_allocate;
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gobject_class->constructed = shell_workspace_background_constructed;
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gobject_class->get_property = shell_workspace_background_get_property;
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gobject_class->set_property = shell_workspace_background_set_property;
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/**
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* ShellWorkspaceBackground:monitor-index:
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*/
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obj_props[PROP_MONITOR_INDEX] =
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g_param_spec_int ("monitor-index", NULL, NULL,
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0, G_MAXINT, 0,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS);
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/**
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* ShellWorkspaceBackground:state-adjustment-value:
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*/
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obj_props[PROP_STATE_ADJUSTMENT_VALUE] =
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g_param_spec_double ("state-adjustment-value", NULL, NULL,
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-G_MAXDOUBLE, G_MAXDOUBLE, 0.0,
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G_PARAM_READWRITE |
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G_PARAM_STATIC_STRINGS |
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G_PARAM_EXPLICIT_NOTIFY);
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g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
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}
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static void
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shell_workspace_background_init (ShellWorkspaceBackground *self)
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{
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ShellGlobal *global = shell_global_get ();
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MetaDisplay *display = shell_global_get_display (global);
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g_signal_connect_object (display, "workareas-changed",
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G_CALLBACK (on_workareas_changed),
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self, G_CONNECT_SWAPPED);
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}
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int
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shell_workspace_background_get_monitor_index (ShellWorkspaceBackground *self)
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{
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g_return_val_if_fail (SHELL_IS_WORKSPACE_BACKGROUND (self), -1);
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return self->monitor_index;
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}
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double
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shell_workspace_background_get_state_adjustment_value (ShellWorkspaceBackground *self)
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{
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g_return_val_if_fail (SHELL_IS_WORKSPACE_BACKGROUND (self), -1);
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return self->state_adjustment_value;
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}
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void
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shell_workspace_background_set_state_adjustment_value (ShellWorkspaceBackground *self,
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double value)
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{
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g_return_if_fail (SHELL_IS_WORKSPACE_BACKGROUND (self));
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if (fabs (self->state_adjustment_value - value) < EPSILON)
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return;
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self->state_adjustment_value = value;
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g_object_notify_by_pspec (G_OBJECT (self), obj_props[PROP_STATE_ADJUSTMENT_VALUE]);
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}
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