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摘要: Foundations+of+Qt+Development.pdf 中objecttreemodel不错。 http://doc.qt.nokia.com/4.7-snapshot/itemviews-simpletreemodel.html C++ GUI Programming with Qt4, 2nd Edition http://www.informit.com... 阅读全文
posted @ 2011-10-02 23:20 katago 阅读(312) 评论(0) 推荐(0)
摘要: 本质是层次结构的表(table), If you do not make use of the hierarchy, then the model is a simple table of rows and columns. Each item has a unique index specified by a QModelIndex. 如果不关心层次,model就是简单的表。 ... 阅读全文
posted @ 2011-09-30 18:04 katago 阅读(5501) 评论(0) 推荐(0)
摘要: Model subclasses need to provide implementations of many of the virtual functions defined in the QAbstractItemModel base class. The number of these functions that need to be implemented depends on the... 阅读全文
posted @ 2011-09-30 14:50 katago 阅读(549) 评论(0) 推荐(0)
摘要: http://blog.csdn.net/wwsheng/article/details/2064755 阅读全文
posted @ 2011-09-29 19:14 katago 阅读(144) 评论(0) 推荐(0)
摘要: http://www.freetype.org/freetype2/documentation.html 阅读全文
posted @ 2011-09-29 18:02 katago 阅读(230) 评论(0) 推荐(0)
摘要: 点阵字体与矢量字体点阵字体也叫位图字体,其中每个字形都以一组二维像素 信息表示。由于位图的原故,点阵字体很难进行缩放,特定的点阵字体只能清晰地显示在相应的字号下。但对于 12-16px 这样小的汉字,点阵字体常常比其它类型的字体在屏幕上更好的显示效果。常见的点阵字体有 bdf,pcf,fnt,hbf 等格式。 对于常见的计算机操作系统,字体的显示算法需要一些字体的信息来优化屏幕显示效果,英文称为... 阅读全文
posted @ 2011-09-29 15:21 katago 阅读(5701) 评论(0) 推荐(0)
摘要: http://labs.qt.nokia.com/2011/07/15/text-rendering-in-the-qml-scene-graph/ Some time ago, Gunnarpresented to youwhat the new QML Scene Graph is all about. As mentioned in that article, one of ... 阅读全文
posted @ 2011-09-29 14:56 katago 阅读(946) 评论(0) 推荐(0)
摘要: http://homepages.inf.ed.ac.uk/rbf/HIPR2/hipr_top.htm 阅读全文
posted @ 2011-09-29 11:33 katago 阅读(221) 评论(0) 推荐(0)
摘要: 曼哈顿距离 出租车距离Taxicab geometry或曼哈顿距离 city block distance, Manhattan distance, or Manhattan length 曼哈顿距离——两点在南北方向上的距离加上在东西方向上的距离,即d(i,j)=|xi-xj|+|yi-yj|。对于一个具有正南正北、正东正西方向规则布局的城镇街道,从一点到达另一点的距离正是在南北方向上... 阅读全文
posted @ 2011-09-29 11:16 katago 阅读(5053) 评论(0) 推荐(1)
摘要: Lighthouse is a Qt port There is a Plugin API for backends Lighthouse itself is completely windowsystem agnostic. In contrast to QWS, it does not even care if it’s running as a single proces... 阅读全文
posted @ 2011-09-28 19:40 katago 阅读(248) 评论(0) 推荐(0)
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