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sysprof/lib/sp-visualizer-view.c
Christian Hergert 034a7d881f visualizer-view: ensure types are registered 
These have the chance of being dropped unless we export them
here manually. We probably should change how we export symbols
so this isn't required in the future.
2016-10-09 12:36:28 -07:00

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/* sp-visualizer-view.c
*
* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define G_LOG_DOMAIN "sp-visualizer-view"
#include <glib/gi18n.h>
#include "sp-theme-manager.h"
#include "sp-visualizer-list.h"
#include "sp-visualizer-row.h"
#include "sp-visualizer-row-private.h"
#include "sp-visualizer-selection.h"
#include "sp-visualizer-ticks.h"
#include "sp-visualizer-view.h"
#define NSEC_PER_SEC G_GINT64_CONSTANT(1000000000)
#define DEFAULT_PIXELS_PER_SECOND 20
typedef struct
{
SpCaptureReader *reader;
SpZoomManager *zoom_manager;
SpVisualizerSelection *selection;
SpVisualizerList *list;
GtkScrolledWindow *scroller;
SpVisualizerTicks *ticks;
gint64 drag_begin_at;
gint64 drag_selection_at;
guint button_pressed : 1;
} SpVisualizerViewPrivate;
typedef struct
{
SpVisualizerView *self;
GtkStyleContext *style_context;
cairo_t *cr;
GtkAllocation alloc;
} SelectionDraw;
enum {
PROP_0,
PROP_READER,
PROP_ZOOM_MANAGER,
N_PROPS
};
enum {
VISUALIZER_ADDED,
VISUALIZER_REMOVED,
N_SIGNALS
};
static void buildable_iface_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_EXTENDED (SpVisualizerView, sp_visualizer_view, GTK_TYPE_BIN, 0,
G_ADD_PRIVATE (SpVisualizerView)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, buildable_iface_init))
static GParamSpec *properties [N_PROPS];
static guint signals [N_SIGNALS];
static GtkBuildableIface *parent_buildable;
static void
find_row1 (GtkWidget *widget,
gpointer data)
{
GtkWidget **row1 = data;
if (*row1 == NULL && SP_IS_VISUALIZER_ROW (widget))
*row1 = widget;
}
static gint64
get_time_from_coordinates (SpVisualizerView *self,
gint x,
gint y)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
SpVisualizerRow *row1 = NULL;
GtkAllocation alloc;
gint64 begin_time;
gint64 end_time;
gint graph_width;
g_assert (SP_IS_VISUALIZER_VIEW (self));
if (priv->reader == NULL)
return 0;
gtk_widget_get_allocation (GTK_WIDGET (self), &alloc);
x -= alloc.x;
y -= alloc.y;
/*
* Find the first row so we can get an idea of how wide the graph is
* (ignoring spacing caused by the widget being wider than the data points.
*/
gtk_container_foreach (GTK_CONTAINER (priv->list), find_row1, &row1);
if (!SP_IS_VISUALIZER_ROW (row1))
return 0;
begin_time = sp_capture_reader_get_start_time (priv->reader);
end_time = sp_capture_reader_get_end_time (priv->reader);
graph_width = _sp_visualizer_row_get_graph_width (row1);
return begin_time + ((end_time - begin_time) * (x / (gdouble)graph_width));
}
static gint
get_x_for_time_at (SpVisualizerView *self,
const GtkAllocation *alloc,
gint64 time_at)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
SpVisualizerRow *row1 = NULL;
GtkAdjustment *hadjustment;
gdouble nsec_per_pixel;
gdouble value;
gint64 begin_time;
gint64 end_time;
gint graph_width;
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (alloc != NULL);
/*
* Find the first row so we can get an idea of how wide the graph is
* (ignoring spacing caused by the widget being wider than the data points.
*/
gtk_container_foreach (GTK_CONTAINER (priv->list), find_row1, &row1);
if (!SP_IS_VISUALIZER_ROW (row1))
return 0;
hadjustment = gtk_scrolled_window_get_hadjustment (priv->scroller);
value = gtk_adjustment_get_value (hadjustment);
begin_time = sp_capture_reader_get_start_time (priv->reader);
end_time = sp_capture_reader_get_end_time (priv->reader);
graph_width = _sp_visualizer_row_get_graph_width (row1);
nsec_per_pixel = (end_time - begin_time) / (gdouble)graph_width;
begin_time += value * nsec_per_pixel;
return ((time_at - begin_time) / nsec_per_pixel);
}
static void
sp_visualizer_view_row_added (SpVisualizerView *self,
GtkWidget *widget,
SpVisualizerList *list)
{
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (GTK_IS_WIDGET (widget));
g_assert (SP_IS_VISUALIZER_LIST (list));
if (SP_IS_VISUALIZER_ROW (widget))
g_signal_emit (self, signals [VISUALIZER_ADDED], 0, widget);
}
static void
sp_visualizer_view_row_removed (SpVisualizerView *self,
GtkWidget *widget,
SpVisualizerList *list)
{
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (GTK_IS_WIDGET (widget));
g_assert (SP_IS_VISUALIZER_LIST (list));
if (SP_IS_VISUALIZER_ROW (widget))
g_signal_emit (self, signals [VISUALIZER_REMOVED], 0, widget);
}
static void
sp_visualizer_view_update_ticks (SpVisualizerView *self)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
GtkAdjustment *hadjustment;
GtkAllocation alloc;
gdouble value;
gint64 begin_time;
gint64 end_time;
g_assert (SP_IS_VISUALIZER_VIEW (self));
hadjustment = gtk_scrolled_window_get_hadjustment (priv->scroller);
value = gtk_adjustment_get_value (hadjustment);
gtk_widget_get_allocation (GTK_WIDGET (self), &alloc);
begin_time = get_time_from_coordinates (self, alloc.x + value, alloc.y);
end_time = get_time_from_coordinates (self, alloc.x + value + alloc.width, alloc.y);
sp_visualizer_ticks_set_time_range (priv->ticks, begin_time, end_time);
}
static void
sp_visualizer_view_hadjustment_value_changed (SpVisualizerView *self,
GtkAdjustment *adjustment)
{
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (GTK_IS_ADJUSTMENT (adjustment));
sp_visualizer_view_update_ticks (self);
}
static void
sp_visualizer_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
SpVisualizerView *self = (SpVisualizerView *)widget;
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (allocation != NULL);
GTK_WIDGET_CLASS (sp_visualizer_view_parent_class)->size_allocate (widget, allocation);
sp_visualizer_view_update_ticks (self);
}
static void
draw_selection_cb (SpVisualizerSelection *selection,
gint64 range_begin,
gint64 range_end,
gpointer user_data)
{
SelectionDraw *draw = user_data;
GdkRectangle area;
g_assert (SP_IS_VISUALIZER_SELECTION (selection));
g_assert (draw != NULL);
g_assert (draw->cr != NULL);
g_assert (SP_IS_VISUALIZER_VIEW (draw->self));
area.x = get_x_for_time_at (draw->self, &draw->alloc, range_begin);
area.width = get_x_for_time_at (draw->self, &draw->alloc, range_end) - area.x;
area.y = 0;
area.height = draw->alloc.height;
if (area.width < 0)
{
area.width = ABS (area.width);
area.x -= area.width;
}
gtk_render_background (draw->style_context, draw->cr, area.x, area.y, area.width, area.height);
}
static gboolean
sp_visualizer_view_draw (GtkWidget *widget,
cairo_t *cr)
{
SpVisualizerView *self = (SpVisualizerView *)widget;
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
SelectionDraw draw = { 0 };
gboolean ret;
g_assert (GTK_IS_WIDGET (widget));
g_assert (cr != NULL);
draw.style_context = gtk_widget_get_style_context (widget);
draw.self = self;
draw.cr = cr;
gtk_widget_get_allocation (widget, &draw.alloc);
ret = GTK_WIDGET_CLASS (sp_visualizer_view_parent_class)->draw (widget, cr);
if (sp_visualizer_selection_get_has_selection (priv->selection) || priv->button_pressed)
{
gtk_style_context_add_class (draw.style_context, "selection");
sp_visualizer_selection_foreach (priv->selection, draw_selection_cb, &draw);
if (priv->button_pressed)
draw_selection_cb (priv->selection, priv->drag_begin_at, priv->drag_selection_at, &draw);
gtk_style_context_remove_class (draw.style_context, "selection");
}
return ret;
}
static gboolean
sp_visualizer_view_list_button_press_event (SpVisualizerView *self,
GdkEventButton *ev,
SpVisualizerList *list)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (ev != NULL);
g_assert (SP_IS_VISUALIZER_LIST (list));
if (priv->reader == NULL)
return GDK_EVENT_PROPAGATE;
if (ev->button != GDK_BUTTON_PRIMARY)
{
if (sp_visualizer_selection_get_has_selection (priv->selection))
{
sp_visualizer_selection_unselect_all (priv->selection);
return GDK_EVENT_STOP;
}
return GDK_EVENT_PROPAGATE;
}
if ((ev->state & GDK_SHIFT_MASK) == 0)
sp_visualizer_selection_unselect_all (priv->selection);
priv->button_pressed = TRUE;
priv->drag_begin_at = get_time_from_coordinates (self, ev->x, ev->y);
priv->drag_selection_at = priv->drag_begin_at;
gtk_widget_queue_draw (GTK_WIDGET (self));
return GDK_EVENT_PROPAGATE;
}
static gboolean
sp_visualizer_view_list_button_release_event (SpVisualizerView *self,
GdkEventButton *ev,
SpVisualizerList *list)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (ev != NULL);
g_assert (SP_IS_VISUALIZER_LIST (list));
if (!priv->button_pressed || ev->button != GDK_BUTTON_PRIMARY)
return GDK_EVENT_PROPAGATE;
priv->button_pressed = FALSE;
if (priv->drag_begin_at != priv->drag_selection_at)
{
sp_visualizer_selection_select_range (priv->selection,
priv->drag_begin_at,
priv->drag_selection_at);
priv->drag_begin_at = -1;
priv->drag_selection_at = -1;
}
gtk_widget_queue_draw (GTK_WIDGET (self));
return GDK_EVENT_STOP;
}
static gboolean
sp_visualizer_view_list_motion_notify_event (SpVisualizerView *self,
GdkEventMotion *ev,
SpVisualizerList *list)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (ev != NULL);
g_assert (SP_IS_VISUALIZER_LIST (list));
if (!priv->button_pressed)
return GDK_EVENT_PROPAGATE;
priv->drag_selection_at = get_time_from_coordinates (self, ev->x, ev->y);
gtk_widget_queue_draw (GTK_WIDGET (self));
return GDK_EVENT_PROPAGATE;
}
static void
sp_visualizer_view_list_realize_after (SpVisualizerView *self,
SpVisualizerList *list)
{
GdkDisplay *display;
GdkWindow *window;
GdkCursor *cursor;
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (SP_IS_VISUALIZER_LIST (list));
window = gtk_widget_get_window (GTK_WIDGET (list));
display = gdk_window_get_display (window);
cursor = gdk_cursor_new_from_name (display, "text");
gdk_window_set_cursor (window, cursor);
g_clear_object (&cursor);
}
static void
sp_visualizer_view_selection_changed (SpVisualizerView *self,
SpVisualizerSelection *selection)
{
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (SP_IS_VISUALIZER_SELECTION (selection));
gtk_widget_queue_draw (GTK_WIDGET (self));
}
static void
sp_visualizer_view_finalize (GObject *object)
{
SpVisualizerView *self = (SpVisualizerView *)object;
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_clear_pointer (&priv->reader, sp_capture_reader_unref);
g_clear_object (&priv->zoom_manager);
g_clear_object (&priv->selection);
G_OBJECT_CLASS (sp_visualizer_view_parent_class)->finalize (object);
}
static void
sp_visualizer_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
SpVisualizerView *self = (SpVisualizerView *)object;
switch (prop_id)
{
case PROP_READER:
g_value_set_boxed (value, sp_visualizer_view_get_reader (self));
break;
case PROP_ZOOM_MANAGER:
g_value_set_object (value, sp_visualizer_view_get_zoom_manager (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
sp_visualizer_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
SpVisualizerView *self = (SpVisualizerView *)object;
switch (prop_id)
{
case PROP_READER:
sp_visualizer_view_set_reader (self, g_value_get_boxed (value));
break;
case PROP_ZOOM_MANAGER:
sp_visualizer_view_set_zoom_manager (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
sp_visualizer_view_class_init (SpVisualizerViewClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
SpThemeManager *theme_manager = sp_theme_manager_get_default ();
object_class->finalize = sp_visualizer_view_finalize;
object_class->get_property = sp_visualizer_view_get_property;
object_class->set_property = sp_visualizer_view_set_property;
widget_class->draw = sp_visualizer_view_draw;
widget_class->size_allocate = sp_visualizer_view_size_allocate;
properties [PROP_READER] =
g_param_spec_boxed ("reader",
"Reader",
"The reader for the visualizers",
SP_TYPE_CAPTURE_READER,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
properties [PROP_ZOOM_MANAGER] =
g_param_spec_object ("zoom-manager",
"Zoom Manager",
"The zoom manager for the view",
SP_TYPE_ZOOM_MANAGER,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
signals [VISUALIZER_ADDED] =
g_signal_new ("visualizer-added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (SpVisualizerViewClass, visualizer_added),
NULL, NULL, NULL,
G_TYPE_NONE, 1, SP_TYPE_VISUALIZER_ROW);
signals [VISUALIZER_REMOVED] =
g_signal_new ("visualizer-removed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (SpVisualizerViewClass, visualizer_removed),
NULL, NULL, NULL,
G_TYPE_NONE, 1, SP_TYPE_VISUALIZER_ROW);
gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/sysprof/ui/sp-visualizer-view.ui");
gtk_widget_class_bind_template_child_private (widget_class, SpVisualizerView, list);
gtk_widget_class_bind_template_child_private (widget_class, SpVisualizerView, scroller);
gtk_widget_class_bind_template_child_private (widget_class, SpVisualizerView, ticks);
gtk_widget_class_set_css_name (widget_class, "visualizers");
sp_theme_manager_register_resource (theme_manager, NULL, NULL, "/org/gnome/sysprof/css/SpVisualizerView-shared.css");
sp_theme_manager_register_resource (theme_manager, "Adwaita", NULL, "/org/gnome/sysprof/css/SpVisualizerView-Adwaita.css");
sp_theme_manager_register_resource (theme_manager, "Adwaita", "dark", "/org/gnome/sysprof/css/SpVisualizerView-Adwaita-dark.css");
g_type_ensure (SP_TYPE_VISUALIZER_LIST);
g_type_ensure (SP_TYPE_VISUALIZER_TICKS);
}
static void
sp_visualizer_view_init (SpVisualizerView *self)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
GtkAdjustment *hadjustment;
priv->drag_begin_at = -1;
priv->drag_selection_at = -1;
gtk_widget_init_template (GTK_WIDGET (self));
priv->selection = g_object_new (SP_TYPE_VISUALIZER_SELECTION, NULL);
g_signal_connect_object (priv->selection,
"changed",
G_CALLBACK (sp_visualizer_view_selection_changed),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (priv->list,
"button-press-event",
G_CALLBACK (sp_visualizer_view_list_button_press_event),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (priv->list,
"button-release-event",
G_CALLBACK (sp_visualizer_view_list_button_release_event),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (priv->list,
"motion-notify-event",
G_CALLBACK (sp_visualizer_view_list_motion_notify_event),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (priv->list,
"realize",
G_CALLBACK (sp_visualizer_view_list_realize_after),
self,
G_CONNECT_SWAPPED | G_CONNECT_AFTER);
g_signal_connect_object (priv->list,
"add",
G_CALLBACK (sp_visualizer_view_row_added),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (priv->list,
"remove",
G_CALLBACK (sp_visualizer_view_row_removed),
self,
G_CONNECT_SWAPPED);
hadjustment = gtk_scrolled_window_get_hadjustment (priv->scroller);
g_signal_connect_object (hadjustment,
"value-changed",
G_CALLBACK (sp_visualizer_view_hadjustment_value_changed),
self,
G_CONNECT_SWAPPED);
}
/**
* sp_visualizer_view_get_reader:
*
* Returns: (transfer none): An #SpCaptureReader
*/
SpCaptureReader *
sp_visualizer_view_get_reader (SpVisualizerView *self)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_return_val_if_fail (SP_IS_VISUALIZER_VIEW (self), NULL);
return priv->reader;
}
void
sp_visualizer_view_set_reader (SpVisualizerView *self,
SpCaptureReader *reader)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_return_if_fail (SP_IS_VISUALIZER_VIEW (self));
if (priv->reader != reader)
{
g_clear_pointer (&priv->reader, sp_capture_reader_unref);
if (reader != NULL)
{
gint64 begin_time;
priv->reader = sp_capture_reader_ref (reader);
begin_time = sp_capture_reader_get_start_time (priv->reader);
sp_visualizer_ticks_set_epoch (priv->ticks, begin_time);
sp_visualizer_ticks_set_time_range (priv->ticks, begin_time, begin_time);
sp_visualizer_selection_unselect_all (priv->selection);
}
sp_visualizer_list_set_reader (priv->list, reader);
sp_visualizer_view_update_ticks (self);
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_READER]);
}
}
static void
sp_visualizer_view_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
SpVisualizerView *self = (SpVisualizerView *)buildable;
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (GTK_IS_BUILDER (builder));
g_assert (G_IS_OBJECT (child));
if (g_strcmp0 (type, "visualizer") == 0 && GTK_IS_WIDGET (child))
{
gtk_container_add (GTK_CONTAINER (priv->list), GTK_WIDGET (child));
return;
}
parent_buildable->add_child (buildable, builder, child, type);
}
static void
buildable_iface_init (GtkBuildableIface *iface)
{
parent_buildable = g_type_interface_peek_parent (iface);
iface->add_child = sp_visualizer_view_add_child;
}
static void
sp_visualizer_view_zoom_manager_notify_zoom (SpVisualizerView *self,
GParamSpec *pspec,
SpZoomManager *zoom_manager)
{
g_assert (SP_IS_VISUALIZER_VIEW (self));
g_assert (SP_IS_ZOOM_MANAGER (zoom_manager));
sp_visualizer_view_update_ticks (self);
}
/**
* sp_visualizer_view_get_zoom_manager:
*
* Returns: (transfer none) (nullable): An #SpZoomManager or %NULL
*/
SpZoomManager *
sp_visualizer_view_get_zoom_manager (SpVisualizerView *self)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_return_val_if_fail (SP_IS_VISUALIZER_VIEW (self), NULL);
return priv->zoom_manager;
}
void
sp_visualizer_view_set_zoom_manager (SpVisualizerView *self,
SpZoomManager *zoom_manager)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_return_if_fail (SP_IS_VISUALIZER_VIEW (self));
g_return_if_fail (!zoom_manager || SP_IS_ZOOM_MANAGER (zoom_manager));
if (priv->zoom_manager != zoom_manager)
{
if (priv->zoom_manager != NULL)
{
g_signal_handlers_disconnect_by_func (priv->zoom_manager,
G_CALLBACK (sp_visualizer_view_zoom_manager_notify_zoom),
self);
g_clear_object (&priv->zoom_manager);
}
if (zoom_manager != NULL)
{
priv->zoom_manager = g_object_ref (zoom_manager);
g_signal_connect_object (priv->zoom_manager,
"notify::zoom",
G_CALLBACK (sp_visualizer_view_zoom_manager_notify_zoom),
self,
G_CONNECT_SWAPPED);
}
sp_visualizer_list_set_zoom_manager (priv->list, zoom_manager);
gtk_widget_queue_resize (GTK_WIDGET (self));
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_ZOOM_MANAGER]);
}
}
/**
* sp_visualizer_view_get_selection:
*
* Gets the #SpVisualizerSelection instance for the visualizer view.
* This can be used to alter the selection or selections of the visualizers.
*
* Returns: (transfer none): An #SpVisualizerSelection.
*/
SpVisualizerSelection *
sp_visualizer_view_get_selection (SpVisualizerView *self)
{
SpVisualizerViewPrivate *priv = sp_visualizer_view_get_instance_private (self);
g_return_val_if_fail (SP_IS_VISUALIZER_VIEW (self), NULL);
return priv->selection;
}
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