问题描述
[root@localhost Desktop]# rpm -qi dockerName: dockerVersion : 1.5Release : 5.el6Architecture: x86_64Install Date: Sat 02 May 2015 12:12:36 PM CSTGroup : User Interface/XSize: 37603License : GPL+Signature : RSA/SHA256, Fri 02 Jul 2010 05:28:52 AM CST, Key ID 3b49df2a0608b895Source RPM : docker-1.5-5.el6.src.rpmBuild Date : Fri 02 Jul 2010 02:32:06 AM CSTBuild Host : x86-05.phx2.fedoraproject.orgRelocations : (not relocatable)Packager : Fedora ProjectVendor : Fedora ProjectURL : http://icculus.org/openbox/2/docker/Summary : KDE and GNOME2 system tray replacement docking applicationDescription :Docker is a docking application (WindowMaker dock app) which acts as a systemtray for KDE and GNOME2. It can be used to replace the panel in eitherenvironment, allowing you to have a system tray without running the KDE/GNOMEpanel or environment.
[root@localhost Desktop]# systemctl start docker.serviceFailed to issue method call: Unit docker.service failed to load: No such file or directory.
问题解答
回答1：比如取每个点的rgba值得平均值，根据这个策略得到每个像素点如何计算得出合并后的像素点的数据。得到一个合并的iamgeData，然后通过putImage方法弄到合并后的canvas中去。
