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/*
* Copyright © 2015 Canonical LTD
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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/>.
*
* Author: Robert Carr <robert.carr@canonical.com>
*/
#include "eglapp.h"
#include "mir_toolkit/mir_client_library.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <GLES2/gl2.h>
void animate_cursor(MirBufferStream *stream)
{
// mir_pixel_format_argb_8888 as set below
int const bpp = 4;
uint32_t const background = 0x00000000;
uint32_t const foreground = 0xffffffff;
MirGraphicsRegion region;
mir_buffer_stream_get_graphics_region(stream, ®ion);
for (int y = 0; y < region.height; ++y)
{
for (int x = 0; x < region.width; ++x)
{
uint32_t* pixel = (uint32_t*)
(region.vaddr + y * region.stride + x * bpp);
*pixel = background;
}
}
static float theta = 0.0f;
theta += 0.000234567f;
char* origin = region.vaddr + (region.height/2)*region.stride;
for (int x = 0; x < region.width; ++x)
{
int const magnitude = region.height / 3;
int y = magnitude * sinf(theta + x * 2 * M_PI / region.width);
uint32_t* pixel = (uint32_t*)(origin + x*bpp + y*region.stride);
*pixel = foreground;
}
mir_buffer_stream_swap_buffers_sync(stream);
}
MirBufferStream* make_cursor_stream(MirConnection *connection, MirSurface *surface)
{
MirBufferStream* stream = mir_connection_create_buffer_stream_sync(connection,
24, 24, mir_pixel_format_argb_8888, mir_buffer_usage_software);
animate_cursor(stream);
MirCursorConfiguration* conf = mir_cursor_configuration_from_buffer_stream(stream, 0, 0);
mir_wait_for(mir_surface_configure_cursor(surface, conf));
mir_cursor_configuration_destroy(conf);
return stream;
}
int main(int argc, char *argv[])
{
unsigned int width = 128, height = 128;
if (!mir_eglapp_init(argc, argv, &width, &height, NULL))
return 1;
glClearColor(0.5, 0.5, 0.5, mir_eglapp_background_opacity);
glClear(GL_COLOR_BUFFER_BIT);
mir_eglapp_swap_buffers();
MirBufferStream* stream = make_cursor_stream(mir_eglapp_native_connection(),
mir_eglapp_native_surface());
while (mir_eglapp_running())
{
animate_cursor(stream);
}
mir_eglapp_cleanup();
return 0;
}
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