LayoutTests/fast/events/scale-and-scroll-div.html - Issue 610423004: Preserve fractional scroll offset for JS scrolling API

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Issue 610423004: Preserve fractional scroll offset for JS scrolling API (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: address comments Created 6 years, 2 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <html>	2 <html>

3 <head>	3 <head>

4 <style>	4 <style>

5 ::-webkit-scrollbar {	5 ::-webkit-scrollbar {

6 width: 0px;	6 width: 0px;

7 height: 0px;	7 height: 0px;

8 }	8 }

9 #bluebox {	9 #bluebox {

10 width: 100px;	10 width: 100px;

11 height: 100px;	11 height: 100px;

12 background: blue;	12 background: blue;

13 padding: 0px;	13 padding: 0px;

14 margin: 0px;	14 margin: 0px;

15 }	15 }

16 #redbox {	16 #redbox {

17 width: 100px;	17 width: 100px;

18 height: 100px;	18 height: 100px;

19 background: red;	19 background: red;

20 padding: 0px;	20 padding: 0px;

21 margin: 0px;	21 margin: 0px;

22 }	22 }

23 </style>	23 </style>

24 <script>	24 <script>

25	25

	26 var floatPrecision = 0.1;

26 var scrollDistance = 10;	27 var scrollDistance = 10;

27 var expectedScrollDistance;	28 var expectedScrollDistance;

28 var scrollBox;	29 var scrollBox;

29	30

30 function scroll(scaleFactor) {	31 function scroll(scaleFactor) {

31 expectedScrollDistance = Math.floor(scrollDistance/scaleFactor);	32 expectedScrollDistance = scrollDistance/scaleFactor;

32	33

33 scrollBox.scrollTop = 0;	34 scrollBox.scrollTop = 0;

34	35

35 eventSender.gestureScrollBegin(10, 100);	36 eventSender.gestureScrollBegin(10, 100);

36 for(var i = 0; i < scrollDistance; ++i) {	37 for(var i = 0; i < scrollDistance; ++i) {

37 eventSender.gestureScrollUpdate(0, -1);	38 eventSender.gestureScrollUpdate(0, -1);

38 }	39 }

39 eventSender.gestureScrollEnd(0, 0);	40 eventSender.gestureScrollEnd(0, 0);

40	41

41 shouldBe('scrollBox.scrollTop', 'expectedScrollDistance');	42 shouldBeCloseTo('scrollBox.scrollTop', expectedScrollDistance, floatPr ecision);

42	43

43 scrollBox.scrollTop = 20;	44 scrollBox.scrollTop = 20;

44	45

45 eventSender.gestureScrollBegin(10, 300);	46 eventSender.gestureScrollBegin(10, 300);

46 for(var i = 0; i < scrollDistance; ++i) {	47 for(var i = 0; i < scrollDistance; ++i) {

47 eventSender.gestureScrollUpdate(0, 1);	48 eventSender.gestureScrollUpdate(0, 1);

48 }	49 }

49 eventSender.gestureScrollEnd(0, 0);	50 eventSender.gestureScrollEnd(0, 0);

50	51

51 expectedScrollDistance = Math.floor(20 - scrollDistance/scaleFactor);	52 expectedScrollDistance = 20 - scrollDistance/scaleFactor;

52	53

53 shouldBe('scrollBox.scrollTop', 'expectedScrollDistance');	54 shouldBeCloseTo('scrollBox.scrollTop', expectedScrollDistance, floatPr ecision);

54 }	55 }

55	56

56 function scaleWithEventSender(scaleFactor) {	57 function scaleWithEventSender(scaleFactor) {

57 var scaleOffset = 0;	58 var scaleOffset = 0;

58 if (window.eventSender) {	59 if (window.eventSender) {

59 window.eventSender.setPageScaleFactor(scaleFactor, scaleOffset, sca leOffset);	60 window.eventSender.setPageScaleFactor(scaleFactor, scaleOffset, sca leOffset);

60 }	61 }

61 }	62 }

62	63

63 function test() {	64 function test() {

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103 <div id="redbox"></div>	104 <div id="redbox"></div>

104 <div id="bluebox"></div>	105 <div id="bluebox"></div>

105 <div id="redbox"></div>	106 <div id="redbox"></div>

106 <div id="bluebox"></div>	107 <div id="bluebox"></div>

107 <div id="redbox"></div>	108 <div id="redbox"></div>

108 </div>	109 </div>

109	110

110 <div id="console"></div>	111 <div id="console"></div>

111 </body>	112 </body>

112 </html>	113 </html>

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