Closed Bug 353999 Opened 14 years ago Closed 14 years ago
fifteen- (15-) minute events make later events align too early in day/week(multiday) view
19.90 KB, image/png
17.48 KB, text/calendar
2.96 KB, patch
|Details | Diff | Splinter Review|
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:184.108.40.206) Gecko/20060909 Firefox/220.127.116.11 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060922 Calendar/0.3a2+ Fifteen minute events make later events align too early in day view and week view (multiday view). Reproducible: Always Steps to Reproduce: 1. In day view or week view, drag events at 8:15-8:30, 9:15-9:30, 10:15-10:30 ... 18:15-18:30 19:15-19:30 Actual Results: By the evening, events appear to start at the top of the hour instead of 15 minutes in. Expected Results: Each event start should be aligned at the 15 minute point, 1/4 the way down the hour box. Problem does not seem to occur for 30 minute events.
Summary: fifteen- (15-) minute events make later events align to early in day/week/multiday view → fifteen- (15-) minute events make later events align too early in day/week(multiday) view
Version: unspecified → Trunk
Comment on attachment 239837 [details] sample: .ics file of events used to create image, + day with 30 minute events file not minimal, but shows additional days with 15minute events and a day with 30 minute events that aligns ok.
Attachment #239837 - Attachment description: test case: ics file used to create image → sample: .ics file of events used to create image, + day with 30 minute events
(patch -l -p 2 -i file.patch) 1. mPixPerMin is not generally an integer. Therefore, cannot add rounded pixel durations to get total pixel duration. For example, note that floor(11.25) + floor(11.25) + floor(11.25) + floor(11.25) = 44, not 45 Therefore, must compute pixel duration as difference of start pixel and end pixel. 2. floating point math is not exact. Therefore, round to get pixel coords. For example, if mPixPerMin is 0.7, then 60 minutes should be 0.7*60 = 42 pixels, so 15 minutes should be 10.5 pixels and 30 minutes should be 21 pixels. But (10*60 + 45)*0.7 -> 451.49999999999994 (10*60 + 30)*0.7 -> 441 Difference is 10.499999999999943 So adding 10.5 to this produces 20.999999999999943 -> 20, not 21. With rounding: (10*60 + 45)*0.7 -> 451.49999999999994 -> 451 (10*60 + 30)*0.7 -> 441 -> 441 Difference is 10 (11*60 + 00)*0.7 -> 461.99999999999994 -> 462 Difference is 11, so total of differences is 21, as expected.
Comment on attachment 239893 [details] [diff] [review] fix rounding by using difference for duration Looks good. Eyeballed the fix, could not run a test.
Attachment #239893 - Flags: first-review?(cmtalbert) → first-review+
Comment on attachment 239893 [details] [diff] [review] fix rounding by using difference for duration r=lilmatt (with dmose's blessing for me to do the r2)
Attachment #239893 - Flags: second-review?(dmose) → second-review+
Patch checked in on MOZILLA_1_8_BRANCH and trunk. -> FIXED
Severity: trivial → minor
Status: NEW → RESOLVED
Closed: 14 years ago
OS: Windows 2000 → All
Hardware: PC → All
Resolution: --- → FIXED
Target Milestone: --- → Sunbird 0.5
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