static void
silcpurple_wb_parse(SilcPurpleWb wbs, PurpleWhiteboard *wb,
unsigned char *message, SilcUInt32 message_len)
{
SilcUInt8 command;
SilcUInt16 width, height, brush_size;
SilcUInt32 brush_color, x, y, dx, dy;
SilcBufferStruct buf;
int ret;
/* Parse the packet */
silc_buffer_set(&buf, message, message_len);
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_CHAR(&command),
SILC_STR_UI_SHORT(&width),
SILC_STR_UI_SHORT(&height),
SILC_STR_UI_INT(&brush_color),
SILC_STR_UI_SHORT(&brush_size),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, ret);
/* Update whiteboard if its dimensions changed */
if (width != wbs->width || height != wbs->height)
silcpurple_wb_set_dimensions(wb, height, width);
if (command == SILCPURPLE_WB_DRAW) {
/* Parse data and draw it */
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_INT(&dx),
SILC_STR_UI_INT(&dy),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, 8);
x = dx;
y = dy;
while (silc_buffer_len(&buf) > 0) {
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_INT(&dx),
SILC_STR_UI_INT(&dy),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, 8);
purple_whiteboard_draw_line(wb, x, y, x + dx, y + dy,
brush_color, brush_size);
x += dx;
y += dy;
}
}
if (command == SILCPURPLE_WB_CLEAR)
purple_whiteboard_clear(wb);
}
/* Traverse through the list and draw the points and lines */
void yahoo_doodle_draw_stroke(PurpleWhiteboard *wb, GList *draw_list)
{
int brush_color;
int brush_size;
int x;
int y;
g_return_if_fail(draw_list != NULL);
brush_color = GPOINTER_TO_INT(draw_list->data);
draw_list = draw_list->next;
g_return_if_fail(draw_list != NULL);
brush_size = GPOINTER_TO_INT(draw_list->data);
draw_list = draw_list->next;
g_return_if_fail(draw_list != NULL);
x = GPOINTER_TO_INT(draw_list->data);
draw_list = draw_list->next;
g_return_if_fail(draw_list != NULL);
y = GPOINTER_TO_INT(draw_list->data);
draw_list = draw_list->next;
g_return_if_fail(draw_list != NULL);
/*
purple_debug_debug("yahoo", "doodle: Drawing: color=%d, size=%d, (%d,%d)\n", brush_color, brush_size, x, y);
*/
while(draw_list != NULL && draw_list->next != NULL)
{
int dx = GPOINTER_TO_INT(draw_list->data);
int dy = GPOINTER_TO_INT(draw_list->next->data);
purple_whiteboard_draw_line(wb,
x, y,
x + dx, y + dy,
brush_color, brush_size);
x += dx;
y += dy;
draw_list = draw_list->next->next;
}
}
