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/*
* gxr
* Copyright 2018 Collabora Ltd.
* Author: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
* SPDX-License-Identifier: MIT
*/
#include <glib.h>
#include <glib-unix.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdk.h>
#include "gxr.h"
static GulkanTexture *texture;
static gboolean
_poll_cb (gpointer data)
{
GxrOverlay *overlay = (GxrOverlay*) data;
gxr_overlay_poll_event (overlay);
return TRUE;
}
static gboolean
_sigint_cb (gpointer _loop)
{
GMainLoop *loop = (GMainLoop*) _loop;
g_main_loop_quit (loop);
return TRUE;
}
static void
print_pixbuf_info (GdkPixbuf * pixbuf)
{
gint n_channels = gdk_pixbuf_get_n_channels (pixbuf);
GdkColorspace colorspace = gdk_pixbuf_get_colorspace (pixbuf);
gint bits_per_sample = gdk_pixbuf_get_bits_per_sample (pixbuf);
gboolean has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
gint width = gdk_pixbuf_get_width (pixbuf);
gint height = gdk_pixbuf_get_height (pixbuf);
gint rowstride = gdk_pixbuf_get_rowstride (pixbuf);
g_print ("We loaded a pixbuf.\n");
g_print ("channels %d\n", n_channels);
g_print ("colorspace %d\n", colorspace);
g_print ("bits_per_sample %d\n", bits_per_sample);
g_print ("has_alpha %d\n", has_alpha);
g_print ("pixel dimensions %dx%d\n", width, height);
g_print ("rowstride %d\n", rowstride);
}
static GdkPixbuf *
load_gdk_pixbuf ()
{
GError *error = NULL;
GdkPixbuf * pixbuf_unflipped =
gdk_pixbuf_new_from_resource ("/res/cat.jpg", &error);
if (error != NULL) {
g_printerr ("Unable to read file: %s\n", error->message);
g_error_free (error);
return NULL;
} else {
//GdkPixbuf * pixbuf = gdk_pixbuf_flip (pixbuf_unflipped, FALSE);
GdkPixbuf *pixbuf = gdk_pixbuf_add_alpha (pixbuf_unflipped, FALSE, 0, 0, 0);
g_object_unref (pixbuf_unflipped);
//g_object_unref (pixbuf);
return pixbuf;
}
}
static void
_move_cb (GxrOverlay *overlay,
GdkEventMotion *event,
gpointer data)
{
(void) overlay;
(void) data;
g_print ("move: %f %f (%d)\n", event->x, event->y, event->time);
}
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
_release_cb (GxrOverlay *overlay,
GdkEventButton *event,
gpointer data)
{
(void) overlay;
(void) data;
g_print ("release: %d %f %f (%d)\n",
event->button, event->x, event->y, event->time);
}
static void
_destroy_cb (GxrOverlay *overlay,
gpointer data)
{
(void) overlay;
g_print ("destroy\n");
GMainLoop *loop = (GMainLoop*) data;
g_main_loop_quit (loop);
}
static int
test_cat_overlay ()
{
GMainLoop *loop;
GdkPixbuf * pixbuf = load_gdk_pixbuf ();
print_pixbuf_info (pixbuf);
if (pixbuf == NULL)
return -1;
loop = g_main_loop_new (NULL, FALSE);
GxrContext *context = gxr_context_new (GXR_APP_OVERLAY, "Overlay Pixbuf", 1);
GulkanClient *gc = gxr_context_get_gulkan (context);
texture = gulkan_texture_new_from_pixbuf (gc, pixbuf,
VK_FORMAT_R8G8B8A8_UNORM,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
TRUE);
GxrOverlay *overlay = gxr_overlay_new_width (context, "vulkan.cat", 2.0f);
if (overlay == NULL)
{
fprintf (stderr, "Overlay unavailable.\n");
return -1;
}
gxr_overlay_set_mouse_scale (overlay,
(float) (gdk_pixbuf_get_width (pixbuf)),
(float) (gdk_pixbuf_get_height (pixbuf)));
gxr_overlay_submit_texture (overlay, texture);
graphene_matrix_t transform;
graphene_point3d_t pos =
{
.x = 0,
.y = 1,
.z = -2
};
graphene_matrix_init_translate (&transform, &pos);
gxr_overlay_set_transform_absolute (overlay, &transform);
gxr_overlay_show (overlay);
g_signal_connect (overlay, "motion-notify-event", (GCallback) _move_cb, NULL);
g_signal_connect (overlay, "button-press-event", (GCallback) _press_cb, loop);
g_signal_connect (
overlay, "button-release-event", (GCallback) _release_cb, NULL);
g_signal_connect (overlay, "destroy", (GCallback) _destroy_cb, loop);
g_timeout_add (20, _poll_cb, overlay);
g_unix_signal_add (SIGINT, _sigint_cb, loop);
g_main_loop_run (loop);
g_main_loop_unref (loop);
g_print ("bye\n");
g_object_unref (overlay);
g_object_unref (pixbuf);
g_object_unref (texture);
g_object_unref (context);
return 0;
}
int
main ()
{
return test_cat_overlay ();
}
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