How to erase the intersecting part of the two rectangles in Qt? -


i developing speech bubble project. using frameless qdialog wherein painted 2 elliptical rectangles in intersecting way shown below.

a picture of problem

how remove intersecting part here? have marked part in image.

i new qt. code is: 

qpainter painter(this); painter.save(); painter.setrenderhint(qpainter::antialiasing);  qpen pen(qcolor(65, 167, 243), 3,qt::solidline); qbrush brush(qcolor(255, 255, 255,204));  painter.setpen(pen); painter.setbrush(brush);  qpainterpath rounded_rect; rounded_rect.addroundedrect(qrectf(20, 0, 180, 100), 16, 16); rounded_rect.addroundedrect(qrectf(0, 50 - 20, 40, 40 ), 16, 16);   painter.setclippath(rounded_rect); qregion maskregion = painter.clipregion(); setmask(maskregion);  painter.drawpath(rounded_rect); painter.restore();

it possible. should take @ qt documentation:

edit: should change code following (not tested!)

qpainterpath p1, p2; p1.addroundedrect(qrectf(20, 0, 180, 100), 16, 16); p2.addroundedrect(qrectf(0, 50 - 20, 40, 40 ), 16, 16); p1 += p2; // or -= if want remove part  qregion r(p1.tofillpolygon().topolygon()); setmask(r);

edit 2: solution overwrite paintevent()

instead of creating mask, 1 paint on transparent window overwriting paintevent , painting background of arbitrary complex form. i'm not sure if working qdialog based windows.


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based
Read more

thorough guide for profiling racket code -

did googling ("racket profiling", "racket measure performance"), didn't find , there no examples in docs. did google "profile" search on htdp - no luck. (profile (f ...)) output isn't obvious other small snippets. ideally want python's python -m cprofile usage examples. when search "python profiling", both duckduckgo , google give top result: 26.4. python profilers . (although scanned quickly, seems more of reference "thorough usage guide" examples. if had else in mind, perhaps please link that?) the equivalent racket documentation be: profile: statistical profiler . a usage example: #lang racket (require profile) (profile-thunk (thunk (function-to-profile arg0 arg1) )) here (thunk e) convenience (lambda () e) . bigger example: #lang racket (module mod racket (provide f) (define (f) (for/list ([i 10000]) i))) (require (prefix-in mod: 'mod)) (define (f) (for ([i 10000
Read more