static void paint_mark(U8 invert)
{
U8 col = MIN(g_clip_x1, g_clip_x2);
const U8 col_max = MAX(g_clip_x1, g_clip_x2);
const U8 y_offset = cursor_y_offset();
U8 row_min = MIN(g_clip_y1, g_clip_y2) - y_offset;
U8 row_max = MAX(g_clip_y1, g_clip_y2) - y_offset;
if (0xf0u == (row_min & 0xf0u))
row_min = 0;
if (row_max & 0xf0u)
row_max = 0xf;
row_min += TOP_Y;
row_max += TOP_Y;
while (col <= col_max)
{
const U8 x = g_cur_screen_data->column_x[col];
const U8 w = g_cur_screen_data->column_w[col];
paint_box(x, row_min, x + w - 1, row_max, invert);
++col;
}
}
static void
redraw(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
struct buffer *buffer;
int off_x, off_y, bwidth, bheight, bborder, bpitch, bradius;
uint32_t *buffer_data;
float bx, by;
buffer = window_next_buffer(window);
if (!buffer) {
fprintf(stderr,
!callback ? "Failed to create the first buffer.\n" :
"Both buffers busy at redraw(). Server bug?\n");
abort();
}
/* Rotate the damage, but keep the even/odd parity so the
* dimensions of the buffers don't change */
if (window->flags & WINDOW_FLAG_ROTATING_TRANSFORM)
window->transform = (window->transform + 2) % 8;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
bwidth = window->width * window->scale;
bheight = window->height * window->scale;
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
bwidth = window->height * window->scale;
bheight = window->width * window->scale;
break;
}
bpitch = bwidth;
bborder = window->border * window->scale;
bradius = window->ball.radius * window->scale;
buffer_data = buffer->shm_data;
if (window->viewport) {
/* Fill the whole thing with red to detect viewport errors */
paint_box(buffer->shm_data, bpitch, 0, 0, bwidth, bheight,
0xffff0000);
/* The buffer is the same size. However, we crop it
* and scale it up by a factor of 2 */
bborder /= 2;
bradius /= 2;
bwidth /= 2;
bheight /= 2;
/* Offset the drawing region */
off_x = (window->width / 3) * window->scale;
off_y = (window->height / 5) * window->scale;
switch (window->transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
buffer_data += off_y * bpitch + off_x;
break;
case WL_OUTPUT_TRANSFORM_90:
buffer_data += off_x * bpitch + (bwidth - off_y);
break;
case WL_OUTPUT_TRANSFORM_180:
buffer_data += (bheight - off_y) * bpitch +
(bwidth - off_x);
break;
case WL_OUTPUT_TRANSFORM_270:
buffer_data += (bheight - off_x) * bpitch + off_y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
buffer_data += off_y * bpitch + (bwidth - off_x);
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
buffer_data += (bheight - off_x) * bpitch +
(bwidth - off_y);
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
buffer_data += (bheight - off_y) * bpitch + off_x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
buffer_data += off_x * bpitch + off_y;
break;
}
wl_viewport_set_source(window->viewport,
wl_fixed_from_int(window->width / 3),
wl_fixed_from_int(window->height / 5),
wl_fixed_from_int(window->width / 2),
wl_fixed_from_int(window->height / 2));
}
/* Paint the border */
paint_box(buffer_data, bpitch, 0, 0, bwidth, bborder, 0xffffffff);
paint_box(buffer_data, bpitch, 0, 0, bborder, bheight, 0xffffffff);
paint_box(buffer_data, bpitch,
bwidth - bborder, 0, bborder, bheight, 0xffffffff);
paint_box(buffer_data, bpitch,
0, bheight - bborder, bwidth, bborder, 0xffffffff);
/* fill with translucent */
paint_box(buffer_data, bpitch, bborder, bborder,
bwidth - 2 * bborder, bheight - 2 * bborder, 0x80000000);
/* Damage where the ball was */
wl_surface_damage(window->surface,
window->ball.x - window->ball.radius,
window->ball.y - window->ball.radius,
window->ball.radius * 2 + 1,
window->ball.radius * 2 + 1);
window_advance_game(window, time);
window_get_transformed_ball(window, &bx, &by);
/* Paint the ball */
paint_circle(buffer_data, bpitch, bx, by, bradius, 0xff00ff00);
if (print_debug) {
printf("Ball now located at (%f, %f)\n",
window->ball.x, window->ball.y);
printf("Circle painted at (%f, %f), radius %d\n", bx, by,
bradius);
printf("Buffer damage rectangle: (%d, %d) @ %dx%d\n",
(int)(bx - bradius), (int)(by - bradius),
bradius * 2 + 1, bradius * 2 + 1);
}
/* Damage where the ball is now */
wl_surface_damage(window->surface,
window->ball.x - window->ball.radius,
window->ball.y - window->ball.radius,
window->ball.radius * 2 + 1,
window->ball.radius * 2 + 1);
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
if (window->display->compositor_version >= 2 &&
(window->transform != WL_OUTPUT_TRANSFORM_NORMAL ||
window->flags & WINDOW_FLAG_ROTATING_TRANSFORM))
wl_surface_set_buffer_transform(window->surface,
window->transform);
if (window->viewport)
wl_viewport_set_destination(window->viewport,
window->width,
window->height);
if (window->scale != 1)
wl_surface_set_buffer_scale(window->surface,
window->scale);
if (callback)
wl_callback_destroy(callback);
window->callback = wl_surface_frame(window->surface);
wl_callback_add_listener(window->callback, &frame_listener, window);
wl_surface_commit(window->surface);
buffer->busy = 1;
}
static void draw_cursor(U8 invert) {
paint_box(cursor_x, cursor_y,
cursor_x + cursor_w - 1,
cursor_y, invert);
}