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[Text] Account for font leading so descenders are not clipped #96

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[Text] Account for font leading so descenders are not clipped #96

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ide
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@ide ide commented Feb 25, 2015

Prior to this diff, descenders (the hanging tail on letters like g and j) were clipped on the last line because the text measurer did not account for the font leading. With NSStringDrawingUsesFontLeading it honors the fonts line spacing.

To test: open the Text demo of the UIExplorer and see that the bottom of the letter g is no longer clipped off.

Before

Screenshot Before

After

Screenshot After

@ide
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ide commented Mar 10, 2015

catping

@vjeux
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vjeux commented Mar 10, 2015

Looks like a legit change. @a2?

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frantic commented Mar 22, 2015

@a2 @nicklockwood - could you guys please take a look? I think it's a legit change - I've seen this bug a lot. I haven't found anything obvious why we wouldn't want this in.
@ide - we started doing snapshot tests, please rebase your change on top of master.

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Yes, this looks good to me. Please merge.

Prior to this diff, descenders (the hanging tail on letters like g and j) were clipped on the last line because the text measurer did not account for the font leading. With `NSStringDrawingUsesFontLeading` it honors the fonts line spacing.

To test: open the Text demo of the UIExplorer and see that the bottom of the letter g is no longer clipped off.

![Screenshot Before](https://cloud.githubusercontent.com/assets/379606/6364746/1c5527a0-bc60-11e4-8aeb-2147a6eb6596.png)

![Screenshot After](https://cloud.githubusercontent.com/assets/379606/6364747/1e9abe58-bc60-11e4-8c34-9f20ad8572ff.png)
@ide
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ide commented Mar 23, 2015

@frantic is there anything else I need to do to update the snapshots?

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frantic commented Mar 23, 2015

@ide nope, thanks! Going to get this in via internal diff.

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frantic commented Mar 23, 2015

Landed internally. Thank you!

@frantic frantic closed this Mar 23, 2015
@ide ide deleted the text-measurement-descenders branch March 24, 2015 06:54
vjeux pushed a commit to vjeux/react-native that referenced this pull request Apr 13, 2015
Summary:
Prior to this diff, descenders (the hanging tail on letters like g and j) were clipped on the last line because the text measurer did not account for the font leading. With `NSStringDrawingUsesFontLeading` it honors the fonts line spacing.

To test: open the Text demo of the UIExplorer and see that the bottom of the letter g is no longer clipped off.

## Before

![Screenshot Before](https://cloud.githubusercontent.com/assets/379606/6364746/1c5527a0-bc60-11e4-8aeb-2147a6eb6596.png)

## After

![Screenshot After](https://cloud.githubusercontent.com/assets/379606/6364747/1e9abe58-bc60-11e4-8c34-9f20ad8572ff.png)
Closes facebook#96
Github Author: James Ide <ide@jameside.com>

Test Plan: Imported from GitHub, without a `Test Plan:` line.
vjeux pushed a commit to vjeux/react-native that referenced this pull request Apr 14, 2015
Summary:
Prior to this diff, descenders (the hanging tail on letters like g and j) were clipped on the last line because the text measurer did not account for the font leading. With `NSStringDrawingUsesFontLeading` it honors the fonts line spacing.

To test: open the Text demo of the UIExplorer and see that the bottom of the letter g is no longer clipped off.

## Before

![Screenshot Before](https://cloud.githubusercontent.com/assets/379606/6364746/1c5527a0-bc60-11e4-8aeb-2147a6eb6596.png)

## After

![Screenshot After](https://cloud.githubusercontent.com/assets/379606/6364747/1e9abe58-bc60-11e4-8c34-9f20ad8572ff.png)
Closes facebook#96
Github Author: James Ide <ide@jameside.com>

Test Plan: Imported from GitHub, without a `Test Plan:` line.
vjeux pushed a commit to vjeux/react-native that referenced this pull request Apr 15, 2015
Summary:
Prior to this diff, descenders (the hanging tail on letters like g and j) were clipped on the last line because the text measurer did not account for the font leading. With `NSStringDrawingUsesFontLeading` it honors the fonts line spacing.

To test: open the Text demo of the UIExplorer and see that the bottom of the letter g is no longer clipped off.

## Before

![Screenshot Before](https://cloud.githubusercontent.com/assets/379606/6364746/1c5527a0-bc60-11e4-8aeb-2147a6eb6596.png)

## After

![Screenshot After](https://cloud.githubusercontent.com/assets/379606/6364747/1e9abe58-bc60-11e4-8c34-9f20ad8572ff.png)
Closes facebook#96
Github Author: James Ide <ide@jameside.com>

Test Plan: Imported from GitHub, without a `Test Plan:` line.
harrykiselev pushed a commit to harrykiselev/react-native that referenced this pull request Aug 5, 2015
react-one pushed a commit to react-one/react-native that referenced this pull request Sep 24, 2021
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4 participants