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Add support for xyz.amorgan.blurhash in ImageContent #700

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@redstrate redstrate commented Aug 19, 2023

This adds an optional key to ImageContent, for displaying a blurhash on the client before an image is loaded.

Example consumer in Neochat: https://invent.kde.org/network/neochat/-/merge_requests/1151

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I'd be happy to see the blurhash generation code in the library too - would you mind moving it over here from the NeoChat MR? :)

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I'd be happy to see the blurhash generation code in the library too - would you mind moving it over here from the NeoChat MR? :)

Sure can!

@KitsuneRal KitsuneRal added the enhancement A feature or change request for the library label Sep 11, 2023
@redstrate redstrate force-pushed the work/redstrate/blurhash-support branch from 0ea5d48 to d7f2d33 Compare October 19, 2023 19:29
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Okay the blurhash implementation has been moved here, will update the NeoChat MR accordingly

@redstrate redstrate force-pushed the work/redstrate/blurhash-support branch 2 times, most recently from b887bac to 7a4ddda Compare October 19, 2023 19:36
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Sorry for waiting; overall LGTM save for the tests

Quotient/blurhash.cpp Outdated Show resolved Hide resolved
Quotient/blurhash.cpp Outdated Show resolved Hide resolved
This adds an optional key to ImageContent, for displaying a blurhash on
the client before an image is loaded.
@redstrate redstrate force-pushed the work/redstrate/blurhash-support branch 2 times, most recently from d90d364 to b800ffb Compare July 20, 2024 15:17
So every client that wants to implement blurhashes doesn't have to copy
this file over and over.
@redstrate redstrate force-pushed the work/redstrate/blurhash-support branch from b800ffb to 8bc55f0 Compare July 20, 2024 15:19
@redstrate redstrate requested a review from KitsuneRal July 20, 2024 15:19
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Mostly LGTM but I have a question regarding the protected piece. I actually thought it would be merely two functions in the interface but you seem to intend something more, apparently?


#include "blurhash.h"

#include <QColorSpace>
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Suggested change
#include <QColorSpace>
#include <QtGui/QColorSpace>


#include "quotient_export.h"

#include <QImage>
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Suggested change
#include <QImage>
#include <QtGui/QImage>

*/
static QUOTIENT_API QString encode(const QImage &image, int componentsX = 4, int componentsY = 4);

protected:
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protected implies inheriting from a class - do you expect that clients should derive from this class and somehow use its static internals?

static QUOTIENT_API QString encode(const QImage &image, int componentsX = 4, int componentsY = 4);

protected:
struct Components {
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Why not alias QPoint or std::pair?

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