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LibWeb: Add Canvas Context2D basic text align and text baseline support

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Add the CanvasTextDrawingStyles mixin with the textAlign and
textBaseline attributes. Update fill_text in CanvasRenderingContext2D
to move the text rect by the text align and text baseline attributes.
Wrote a simple HTML example to showcase the new features.
This commit is contained in:
Bastiaan van der Plaat 2023-08-03 12:18:17 +02:00 • committed by Andreas Kling
parent e689422564
commit 220e34b69d
9 changed files with 159 additions and 9 deletions
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Userland/Libraries/LibWeb/HTML/Canvas/CanvasState.h
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@ -80,6 +80,8 @@ public:
Bindings::ImageSmoothingQuality image_smoothing_quality { Bindings::ImageSmoothingQuality::Low };
float global_alpha = { 1 };
Optional<CanvasClip> clip;
Bindings::CanvasTextAlign text_align { Bindings::CanvasTextAlign::Start };
Bindings::CanvasTextBaseline text_baseline { Bindings::CanvasTextBaseline::Alphabetic };
};
DrawingState& drawing_state() { return m_drawing_state; }
DrawingState const& drawing_state() const { return m_drawing_state; }