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https://github.com/varun-r-mallya/sysprof.git
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libsysprof-gtk: rename depth layer to column layer
I would like this to eventually be a bit more re-usable for XYSeries and more than just "stack depth" for the traceables.
This commit is contained in:
Christian Hergert
377
src/libsysprof-gtk/sysprof-column-layer.c
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377
src/libsysprof-gtk/sysprof-column-layer.c
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/* sysprof-column-layer.c
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*
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* Copyright 2023 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "config.h"
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#include "sysprof-column-layer.h"
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struct _SysprofColumnLayer
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{
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SysprofChartLayer parent_instance;
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SysprofXYSeries *series;
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GdkRGBA color;
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GdkRGBA hover_color;
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};
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enum {
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PROP_0,
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PROP_COLOR,
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PROP_HOVER_COLOR,
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PROP_SERIES,
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N_PROPS
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};
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G_DEFINE_FINAL_TYPE (SysprofColumnLayer, sysprof_column_layer, SYSPROF_TYPE_CHART_LAYER)
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static GParamSpec *properties [N_PROPS];
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static void
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sysprof_column_layer_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot)
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{
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SysprofColumnLayer *self = (SysprofColumnLayer *)widget;
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const SysprofXYSeriesValue *values;
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guint n_values;
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double min_x, max_x;
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int line_width;
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int width;
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int height;
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g_assert (SYSPROF_IS_COLUMN_LAYER (self));
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g_assert (GTK_IS_SNAPSHOT (snapshot));
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width = gtk_widget_get_width (widget);
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height = gtk_widget_get_height (widget);
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if (width == 0 || height == 0 || self->color.alpha == 0)
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return;
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if (self->series == NULL ||
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!(values = sysprof_xy_series_get_values (self->series, &n_values)))
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return;
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sysprof_xy_series_get_range (self->series, &min_x, NULL, &max_x, NULL);
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/* NOTE: We might want to allow setting a "bucket size" for the
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* line width here so that units get joined together. For example,
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* with stack traces, we would get nano-second precision due to time
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* being the X access, but that's not super helpful when you probably
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* want some small quanta to be the width.
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*/
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line_width = MAX (1, width / (max_x - min_x));
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for (guint i = 0; i < n_values; i++)
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{
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const SysprofXYSeriesValue *v = &values[i];
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int line_height = ceilf (v->y * height);
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gtk_snapshot_append_color (snapshot,
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&self->color,
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&GRAPHENE_RECT_INIT (v->x * width,
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height - line_height,
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line_width,
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line_height));
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}
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}
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static const SysprofXYSeriesValue *
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sysprof_column_layer_get_value_at_coord (SysprofColumnLayer *self,
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double x,
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double y,
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graphene_rect_t *area)
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{
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const SysprofXYSeriesValue *values;
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graphene_point_t point;
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double min_x, max_x;
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double min_y, max_y;
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guint line_width;
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guint n_values;
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int width;
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int height;
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g_assert (SYSPROF_IS_COLUMN_LAYER (self));
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width = gtk_widget_get_width (GTK_WIDGET (self));
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height = gtk_widget_get_height (GTK_WIDGET (self));
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if (width == 0 || height == 0)
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return NULL;
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if (self->series == NULL ||
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!(values = sysprof_xy_series_get_values (self->series, &n_values)))
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return NULL;
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point = GRAPHENE_POINT_INIT (x, y);
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sysprof_xy_series_get_range (self->series, &min_x, &min_y, &max_x, &max_y);
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line_width = MAX (1, width / (max_x - min_x));
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for (guint i = 0; i < n_values; i++)
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{
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const SysprofXYSeriesValue *v = &values[i];
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int line_height = ceilf (v->y * height);
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graphene_rect_t rect = GRAPHENE_RECT_INIT (v->x * width,
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height - line_height,
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line_width,
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line_height);
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if (graphene_rect_contains_point (&rect, &point))
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{
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if (area != NULL)
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*area = rect;
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return v;
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}
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}
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return NULL;
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}
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static void
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sysprof_column_layer_snapshot_motion (SysprofChartLayer *layer,
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GtkSnapshot *snapshot,
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double x,
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double y)
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{
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SysprofColumnLayer *self = (SysprofColumnLayer *)layer;
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const SysprofXYSeriesValue *v;
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graphene_rect_t rect;
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g_assert (SYSPROF_IS_COLUMN_LAYER (self));
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g_assert (GTK_IS_SNAPSHOT (snapshot));
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if ((v = sysprof_column_layer_get_value_at_coord (self, x, y, &rect)))
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gtk_snapshot_append_color (snapshot, &self->hover_color, &rect);
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}
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static gpointer
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sysprof_column_layer_lookup_item (SysprofChartLayer *layer,
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double x,
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double y)
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{
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SysprofColumnLayer *self = (SysprofColumnLayer *)layer;
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const SysprofXYSeriesValue *v;
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g_assert (SYSPROF_IS_COLUMN_LAYER (self));
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if ((v = sysprof_column_layer_get_value_at_coord (self, x, y, NULL)))
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return g_list_model_get_item (sysprof_xy_series_get_model (self->series), v->index);
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return NULL;
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}
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static void
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sysprof_column_layer_dispose (GObject *object)
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{
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SysprofColumnLayer *self = (SysprofColumnLayer *)object;
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g_clear_pointer (&self->series, sysprof_xy_series_unref);
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G_OBJECT_CLASS (sysprof_column_layer_parent_class)->dispose (object);
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}
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static void
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sysprof_column_layer_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SysprofColumnLayer *self = SYSPROF_COLUMN_LAYER (object);
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switch (prop_id)
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{
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case PROP_COLOR:
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g_value_set_boxed (value, &self->color);
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break;
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case PROP_HOVER_COLOR:
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g_value_set_boxed (value, &self->hover_color);
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break;
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case PROP_SERIES:
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g_value_set_boxed (value, self->series);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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sysprof_column_layer_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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SysprofColumnLayer *self = SYSPROF_COLUMN_LAYER (object);
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switch (prop_id)
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{
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case PROP_COLOR:
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sysprof_column_layer_set_color (self, g_value_get_boxed (value));
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break;
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case PROP_HOVER_COLOR:
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sysprof_column_layer_set_hover_color (self, g_value_get_boxed (value));
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break;
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case PROP_SERIES:
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sysprof_column_layer_set_series (self, g_value_get_boxed (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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sysprof_column_layer_class_init (SysprofColumnLayerClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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SysprofChartLayerClass *chart_layer_class = SYSPROF_CHART_LAYER_CLASS (klass);
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object_class->dispose = sysprof_column_layer_dispose;
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object_class->get_property = sysprof_column_layer_get_property;
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object_class->set_property = sysprof_column_layer_set_property;
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widget_class->snapshot = sysprof_column_layer_snapshot;
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chart_layer_class->lookup_item = sysprof_column_layer_lookup_item;
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chart_layer_class->snapshot_motion = sysprof_column_layer_snapshot_motion;
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properties[PROP_COLOR] =
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g_param_spec_boxed ("color", NULL, NULL,
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GDK_TYPE_RGBA,
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(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
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properties[PROP_HOVER_COLOR] =
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g_param_spec_boxed ("hover-color", NULL, NULL,
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GDK_TYPE_RGBA,
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(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
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properties[PROP_SERIES] =
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g_param_spec_boxed ("series", NULL, NULL,
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SYSPROF_TYPE_XY_SERIES,
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(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
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g_object_class_install_properties (object_class, N_PROPS, properties);
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}
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static void
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sysprof_column_layer_init (SysprofColumnLayer *self)
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{
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gdk_rgba_parse (&self->color, "#000");
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gdk_rgba_parse (&self->hover_color, "#F00");
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}
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SysprofChartLayer *
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sysprof_column_layer_new (void)
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{
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return g_object_new (SYSPROF_TYPE_COLUMN_LAYER, NULL);
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}
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const GdkRGBA *
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sysprof_column_layer_get_color (SysprofColumnLayer *self)
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{
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g_return_val_if_fail (SYSPROF_IS_COLUMN_LAYER (self), NULL);
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return &self->color;
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}
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void
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sysprof_column_layer_set_color (SysprofColumnLayer *self,
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const GdkRGBA *color)
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{
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static const GdkRGBA black = {0,0,0,1};
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g_return_if_fail (SYSPROF_IS_COLUMN_LAYER (self));
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if (color == NULL)
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color = &black;
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if (!gdk_rgba_equal (&self->color, color))
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{
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self->color = *color;
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_COLOR]);
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}
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}
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const GdkRGBA *
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sysprof_column_layer_get_hover_color (SysprofColumnLayer *self)
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{
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g_return_val_if_fail (SYSPROF_IS_COLUMN_LAYER (self), NULL);
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return &self->hover_color;
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}
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void
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sysprof_column_layer_set_hover_color (SysprofColumnLayer *self,
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const GdkRGBA *hover_color)
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{
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static const GdkRGBA red = {1,0,0,1};
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g_return_if_fail (SYSPROF_IS_COLUMN_LAYER (self));
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if (hover_color == NULL)
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hover_color = &red;
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if (!gdk_rgba_equal (&self->hover_color, hover_color))
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{
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self->hover_color = *hover_color;
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_HOVER_COLOR]);
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}
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}
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/**
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* sysprof_column_layer_get_series:
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* @self: a #SysprofColumnLayer
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*
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* Gets the data series to be drawn.
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*
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* Returns: (transfer none) (nullable): a #SysprofXYSeries or %NULL
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*/
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SysprofXYSeries *
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sysprof_column_layer_get_series (SysprofColumnLayer *self)
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{
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g_return_val_if_fail (SYSPROF_IS_COLUMN_LAYER (self), NULL);
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return self->series;
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}
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void
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sysprof_column_layer_set_series (SysprofColumnLayer *self,
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SysprofXYSeries *series)
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{
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g_return_if_fail (SYSPROF_IS_COLUMN_LAYER (self));
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if (series == self->series)
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return;
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g_clear_pointer (&self->series, sysprof_xy_series_unref);
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if (series)
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self->series = sysprof_xy_series_ref (series);
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SERIES]);
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gtk_widget_queue_draw (GTK_WIDGET (self));
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}
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