> This PR adds a `getDrawingContext` method to `WritableImage`, which works > similar to `Canvas::getGraphicsContext` and shares the same signatures. Key > features include: > > - **Shape rendering**: `strokeRect`, `fillRect`, `strokeOval`, `fillOval`, > `strokeArc`, `fillArc`, `strokePolyline`, `fillPolygon`, etc. > - **Stroke and fill attributes**: `lineWidth`, `lineCap`, `lineJoin`, > `miterLimit`, `fillRule`, `stroke` and `fill` paints. > - **Global graphics settings**: `globalAlpha` and `globalBlendMode`. > - **Image drawing**: draw other `Image` instances with scaling and > source/destination rectangles. > - **Text rendering**: render text > - **Save/Restore**: store current stroke, font, dashes, etc and restore them > later > - **Paths**: begin a path, with lines, curves, etc, then stroke or fill it > - **Clips**: support rectangular clips in the SW renderer > > This feature enables direct software rendering to `WritableImage` without > requiring a `Canvas` + snapshot. > > **Additional notes**: > > - The implementation leverages the software stack consisting of the Marlin > rasterizer and Pisces compositor/painter. > > **Example usage**: > > > WritableImage img = new WritableImage(400, 400); > DrawingContext ctx = img.getDrawingContext(); > ctx.setFill(Color.RED); > ctx.fillRect(50, 50, 100, 100); > > > See the sample program `RandomShapesDemo` to see a `WritableImage` and > `Canvas` side by side performing the same operations: > > <img width="1249" height="741" alt="image" > src="https://github.com/user-attachments/assets/4a0b9dcc-8f96-4faa-99cf-83c66d2c851e"; > /> > > Newer version: > > <img width="1249" height="741" alt="image" > src="https://github.com/user-attachments/assets/c0502620-3d02-4fbd-8c33-43bd5138b42c"; > /> > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai).
John Hendrikx has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 30 additional commits since the last revision: - Merge remote-tracking branch 'origin/master' into feature/writable-image-drawing - Fix indent - Fix problems with non-uniform scale - Clarify int buffer requirements - Clarify maxWidth in javadoc - Optimized dirty rect handling (benefits more than just SWDraingContext) - Add test for point in path and change the TODO's to comments - Adjust indentation - Use actual painted pixels to compute dirty rects - Fix regression when drawing empty arc with round cap - ... and 20 more: https://git.openjdk.org/jfx/compare/f2b6a02f...821b73f0 ------------- Changes: - all: https://git.openjdk.org/jfx/pull/1969/files - new: https://git.openjdk.org/jfx/pull/1969/files/5e20e8d3..821b73f0 Webrevs: - full: https://webrevs.openjdk.org/?repo=jfx&pr=1969&range=14 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1969&range=13-14 Stats: 5508 lines in 409 files changed: 3740 ins; 920 del; 848 mod Patch: https://git.openjdk.org/jfx/pull/1969.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1969/head:pull/1969 PR: https://git.openjdk.org/jfx/pull/1969
