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/*
* gxr
* Copyright 2018 Collabora Ltd.
* Author: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
* SPDX-License-Identifier: MIT
*/
#include <time.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include "gxr.h"
static GulkanTexture *texture = NULL;
static GxrContext *context = NULL;
static gboolean
_damage_cb (GtkWidget *widget, GdkEventExpose *event, GxrOverlay *overlay)
{
(void) event;
GdkPixbuf * offscreen_pixbuf =
gtk_offscreen_window_get_pixbuf ((GtkOffscreenWindow *)widget);
if (offscreen_pixbuf != NULL)
{
/* skip rendering if the overlay isn't available or visible */
gboolean is_invisible = !gxr_overlay_is_visible (overlay) &&
!gxr_overlay_thumbnail_is_visible (overlay);
if (is_invisible)
{
g_object_unref (offscreen_pixbuf);
return TRUE;
}
GdkPixbuf *pixbuf = gdk_pixbuf_add_alpha (offscreen_pixbuf, FALSE, 0, 0, 0);
g_object_unref (offscreen_pixbuf);
GulkanClient *client = gxr_context_get_gulkan (context);
if (texture == NULL)
texture = gulkan_texture_new_from_pixbuf (client, pixbuf,
VK_FORMAT_R8G8B8A8_UNORM,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
TRUE);
gxr_overlay_submit_texture (overlay, texture);
g_object_unref (pixbuf);
} else {
fprintf (stderr, "Could not acquire pixbuf.\n");
}
return TRUE;
}
static gboolean
_button_press_cb (GtkWidget *button, GdkEventButton *event, gpointer data)
{
(void) button;
(void) event;
(void) data;
g_print ("button pressed.\n");
return TRUE;
}
struct Labels
{
GtkWidget *time_label;
GtkWidget *fps_label;
struct timespec last_time;
};
static gboolean
_draw_cb (GtkWidget *widget, cairo_t *cr, struct Labels* labels)
{
(void) widget;
(void) cr;
struct timespec now;
if (clock_gettime (CLOCK_REALTIME, &now) != 0)
{
fprintf (stderr, "Could not read system clock\n");
return 0;
}
struct timespec diff;
gxr_time_substract (&now, &labels->last_time, &diff);
double diff_s = gxr_time_to_double_secs (&diff);
double diff_ms = diff_s * SEC_IN_MSEC_D;
double fps = SEC_IN_MSEC_D / diff_ms;
gchar time_str [50];
gchar fps_str [50];
g_sprintf (time_str, "<span font=\"24\">%.2ld:%.9ld</span>",
now.tv_sec, now.tv_nsec);
g_sprintf (fps_str, "FPS %.2f (%.2fms)", fps, diff_ms);
gtk_label_set_markup (GTK_LABEL (labels->time_label), time_str);
gtk_label_set_text (GTK_LABEL (labels->fps_label), fps_str);
labels->last_time.tv_sec = now.tv_sec;
labels->last_time.tv_nsec = now.tv_nsec;
return FALSE;
}
static gboolean
timeout_callback (gpointer data)
{
GxrOverlay *overlay = (GxrOverlay*) data;
gxr_overlay_poll_event (overlay);
return TRUE;
}
static void
_press_cb (GxrOverlay *overlay,
GdkEventButton *event,
gpointer data)
{
(void) overlay;
g_print ("press: %d %f %f (%d)\n",
event->button, event->x, event->y, event->time);
GMainLoop *loop = (GMainLoop*) data;
g_main_loop_quit (loop);
}
static void
_destroy_cb (GxrOverlay *overlay,
gpointer data)
{
(void) overlay;
g_print ("destroy\n");
GMainLoop *loop = (GMainLoop*) data;
g_main_loop_quit (loop);
}
int
main (int argc, char *argv[])
{
GMainLoop *loop;
gtk_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
GtkWidget *window = gtk_offscreen_window_new ();
struct Labels labels;
if (clock_gettime (CLOCK_REALTIME, &labels.last_time) != 0)
{
fprintf (stderr, "Could not read system clock\n");
return 0;
}
labels.time_label = gtk_label_new ("");
labels.fps_label = gtk_label_new ("");
GtkWidget *box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
GtkWidget *button = gtk_button_new_with_label ("Button");
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box), labels.time_label, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (box), labels.fps_label, FALSE, TRUE, 0);
gtk_widget_set_size_request (window , 500, 300);
gtk_container_add (GTK_CONTAINER (window), box);
gtk_widget_show_all (window);
context = gxr_context_new (GXR_APP_OVERLAY, "Overlay GTK", 1);
GxrOverlay *overlay = gxr_overlay_new_width (context, "gxr.example.gtk", 1.0);
gxr_overlay_show (overlay);
graphene_point3d_t position = { .x = 0.f, .y = 1.2f, .z = -1.f };
gxr_overlay_set_translation (overlay, &position);
if (overlay == NULL)
{
fprintf (stderr, "Overlay unavailable.\n");
return -1;
}
gxr_overlay_set_mouse_scale (overlay, 300.0f, 200.0f);
g_signal_connect (overlay, "button-press-event", (GCallback) _press_cb, loop);
g_signal_connect (overlay, "destroy", (GCallback) _destroy_cb, loop);
g_signal_connect (window, "damage-event", G_CALLBACK (_damage_cb), overlay);
g_signal_connect (button, "button_press_event",
G_CALLBACK (_button_press_cb), NULL);
g_signal_connect (window, "draw", G_CALLBACK (_draw_cb), &labels);
g_timeout_add (20, timeout_callback, overlay);
g_main_loop_run (loop);
g_main_loop_unref (loop);
g_object_unref (overlay);
g_object_unref (texture);
g_object_unref (context);
return 0;
}
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