{"id":19479,"date":"2011-12-20T18:33:01","date_gmt":"2011-12-20T10:33:01","guid":{"rendered":"https:\/\/www.deepin.org\/?p=314"},"modified":"2011-12-20T18:33:01","modified_gmt":"2011-12-20T10:33:01","slug":"cairo-graph-for-python-4-basic-grach","status":"publish","type":"post","link":"https:\/\/www.deepin.cn\/zh\/cairo-graph-for-python-4-basic-grach\/","title":{"rendered":"Cairo \u56fe\u5f62\u6307\u5357 for Python (4) \u2014\u2014 \u57fa\u672c\u7ed8\u56fe"},"content":{"rendered":"

\u4f5c\u8005<\/strong>\uff1a\u4faf\u5c11\u8f89\uff0cLD \u5f00\u53d1\u8005\uff0c\u672c\u6587\u539f\u8f7dLinux Deepin \u8bba\u575b<\/a><\/p>\n

\u8fd9\u4e00\u90e8\u5206\u8bb2\u8ff0\u5982\u4f55\u7ed8\u5236\u4e00\u4e9b\u7b80\u5355\u7684\u56fe\u5143\uff0c\u5305\u62ec\u76f4\u7ebf\u3001\u586b\u5145\u4e0e\u7b14\u753b\u64cd\u4f5c\u3001\u865a\u7ebf\u3001\u7ebf\u7aef\uff08Cap\uff09\u4e0e\u7ebf\u7684\u4ea4\u5408\u7b49\u56fe\u5f62\u7684\u7ed8\u5236\u65b9\u6cd5\u3002
\u76f4\u7ebf\u6bb5\u76f4\u7ebf\u6bb5\u662f\u975e\u5e38\u57fa\u7840\u7684\u77e2\u91cf\u56fe\u5f62\u5bf9\u8c61\u3002<\/p>\n

\u753b\u4e00\u6761\u76f4\u7ebf\u6bb5\uff0c\u9700\u8981\u8c03\u7528\u4e24\u4e2a\u51fd\u6570\uff1acairo.move_to() \u51fd\u6570\uff0c\u7528\u4e8e\u8bbe\u7f6e\u7ebf\u6bb5\u8d77\u70b9\uff1bcairo.line_to() \u7528\u4e8e\u8bbe\u5b9a\u7ebf\u6bb5\u7ec8\u70b9\u3002<\/p>\n

1. \u63cf\u7ed8 (Stroke) \u4e0e\u586b\u5145 (Fill)\u63cf\u7ed8 (Stroke) \u53ef\u4ee5\u7ed8\u5236\u5f62\u72b6\u7684\u8f6e\u5ed3\uff0c\u586b\u5145 (Fill) \u5219\u7528\u4e8e\u5411\u5f62\u72b6\u5185\u90e8\u704c\u6ce8\u989c\u8272\u3002<\/p>\n

import pygtk\npygtk.require('2.0')\nimport gtk\nimport math\n\nclass ArcWindow:\n    ''' create ArcWindow '''\n    \n    def __init__(self):\n        ''' Init '''\n        self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)\n        self.window.set_size_request(800, 600)\n        self.window.set_title('ArcWindow')\n        self.window.set_position(gtk.WIN_POS_CENTER)\n        self.window.set_app_paintable(True)\n        \n        # handler\n        self.window.connect('destroy', lambda w: gtk.main_quit())\n        self.window.connect('expose-event', self.onExposeEvent)\n\n        # Show window\n        self.window.show()\n\n        # goto the main\n        gtk.main()\n\n    def onExposeEvent(self, widget, event):\n        width, height = widget.window.get_size()\n        cr = widget.window.cairo_create()\n        cr.set_line_width(9)\n        cr.set_source_rgb(0.69,0.19,0)\n        cr.arc(width \/ 2, height \/ 2, (radius if widget < height else height)\/2-10, 0, 2*math.pi)\n        cr.stroke_preserve()\n        cr.set_source_rgb(0.3,0.4,0.6)\n        cr.fill()\n\nif __name__ == '__main__':\n    ArcWindow()\n<\/pre>\n

 \u6548\u679c\u56fe:<\/strong>
\"arc\"<\/p>\n
\u4e0b\u9762\u5bf9\u4ee3\u7801\u8fdb\u884c\u89e3\u6790\uff1a<\/p>\n
        cr.set_source_rgb(0.69,0.19,0)\n        cr.arc(width \/ 2, height \/ 2, (radius if widget < height else height)\/2-10, 0, 2*math.pi)\n        cr.stroke_preserve()\n<\/pre>\n
\u63cf\u7ed8\u5706\u7684\u8f6e\u5ed3\u3002\u8fd9\u91cc\u8981\u6ce8\u610f\u4e00\u4e0b cairo.stroke_preserve () \u51fd\u6570\u4e0e cairo.stroke () \u51fd\u6570\u7684\u533a\u522b\uff08\u6700\u597d\u7684\u529e\u6cd5\u662f\u7528\u540e\u8005\u66ff\u6362\u4e00\u4e0b\u524d\u8005\uff0c\u770b\u770b\u7a0b\u5e8f\u6267\u884c\u6548\u679c\uff09\u3002cairo.stroke_preserve () \u51fd\u6570\u4f1a\u5c06\u5b83\u7ed8\u5236\u7684\u8def\u5f84\u4f9d\u7136\u4fdd\u5b58\u5728 cairo \u73af\u5883\u4e2d\uff0c\u800c cairo.stroke () \u6240\u7ed8\u5236\u7684\u8def\u5f84\uff0c\u5728\u7ed8\u5236\u5b8c\u6210\u540e\uff0c\u5c31\u4ece cairo\u7684\u73af\u5883\u4e2d\u6e05\u9664\u4e86\u3002<\/p>","protected":false},"excerpt":{"rendered":"
\u4f5c\u8005\uff1a\u4faf\u5c11\u8f89\uff0cLD \u5f00\u53d1\u8005\uff0c\u672c\u6587\u539f\u8f7dLinux Deepin \u8bba\u575b \u8fd9\u4e00\u90e8\u5206\u8bb2\u8ff0\u5982\u4f55\u7ed8\u5236\u4e00\u4e9b\u7b80\u5355\u7684\u56fe\u5143\uff0c\u5305\u62ec\u76f4\u7ebf\u3001\u586b\u5145\u4e0e\u7b14\u753b\u64cd\u4f5c\u3001\u865a\u7ebf\u3001\u7ebf\u7aef\uff08Cap\uff09\u4e0e\u7ebf\u7684\u4ea4\u5408\u7b49\u56fe\u5f62\u7684\u7ed8\u5236\u65b9\u6cd5\u3002 \u76f4\u7ebf\u6bb5\u76f4\u7ebf\u6bb5\u662f\u975e\u5e38\u57fa\u7840\u7684\u77e2\u91cf\u56fe\u5f62\u5bf9\u8c61\u3002 \u753b\u4e00\u6761\u76f4\u7ebf\u6bb5\uff0c\u9700\u8981\u8c03\u7528\u4e24\u4e2a\u51fd\u6570\uff1acairo.move_to() \u51fd\u6570\uff0c\u7528\u4e8e\u8bbe\u7f6e\u7ebf\u6bb5\u8d77\u70b9\uff1bcairo.line_to() \u7528\u4e8e\u8bbe\u5b9a\u7ebf\u6bb5\u7ec8\u70b9\u3002 1. \u63cf\u7ed8 (Stroke) \u4e0e\u586b\u5145 ( ...\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":27,"featured_media":9982,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[93],"tags":[],"_links":{"self":[{"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/posts\/19479"}],"collection":[{"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/comments?post=19479"}],"version-history":[{"count":0,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/posts\/19479\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/media?parent=19479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/categories?post=19479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deepin.cn\/zh\/wp-json\/wp\/v2\/tags?post=19479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}