LibWeb: Rename PaintContext to DisplayListRecordingContext

PaintContext dates back to a time when display lists didn't exist and it truly represented "paint context". Renaming it to better align with its current role.
Author: https://github.com/kalenikaliaksandr Commit: 61114f6d16 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5669 Reviewed-by: https://github.com/gmta
2025-12-08 06:09:58 +00:00 · 2025-07-31 23:07:26 +02:00 · 2025-07-31 23:07:26 +02:00 · 61114f6d16 · 2025-08-01 09:27:48 +00:00
commit 61114f6d16
parent 1001ff2599
65 changed files with 160 additions and 174 deletions
--- a/Libraries/LibWeb/Painting/DisplayListRecordingContext.cpp
+++ b/Libraries/LibWeb/Painting/DisplayListRecordingContext.cpp
@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2018-2022, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Painting/DisplayListRecordingContext.h>
+
+namespace Web {
+
+static u64 s_next_paint_generation_id = 0;
+
+DisplayListRecordingContext::DisplayListRecordingContext(Painting::DisplayListRecorder& display_list_recorder, Palette const& palette, double device_pixels_per_css_pixel)
+    : m_display_list_recorder(display_list_recorder)
+    , m_palette(palette)
+    , m_device_pixel_converter(device_pixels_per_css_pixel)
+    , m_paint_generation_id(s_next_paint_generation_id++)
+{
+}
+
+CSSPixelRect DisplayListRecordingContext::css_viewport_rect() const
+{
+    return {
+        m_device_viewport_rect.x().value() / m_device_pixel_converter.device_pixels_per_css_pixel(),
+        m_device_viewport_rect.y().value() / m_device_pixel_converter.device_pixels_per_css_pixel(),
+        m_device_viewport_rect.width().value() / m_device_pixel_converter.device_pixels_per_css_pixel(),
+        m_device_viewport_rect.height().value() / m_device_pixel_converter.device_pixels_per_css_pixel()
+    };
+}
+
+DevicePixels DisplayListRecordingContext::rounded_device_pixels(CSSPixels css_pixels) const
+{
+    return m_device_pixel_converter.rounded_device_pixels(css_pixels);
+}
+
+DevicePixels DisplayListRecordingContext::enclosing_device_pixels(CSSPixels css_pixels) const
+{
+    return m_device_pixel_converter.enclosing_device_pixels(css_pixels);
+}
+
+DevicePixels DisplayListRecordingContext::floored_device_pixels(CSSPixels css_pixels) const
+{
+    return m_device_pixel_converter.floored_device_pixels(css_pixels);
+}
+
+DevicePixelPoint DisplayListRecordingContext::rounded_device_point(CSSPixelPoint point) const
+{
+    return m_device_pixel_converter.rounded_device_point(point);
+}
+
+DevicePixelPoint DisplayListRecordingContext::floored_device_point(CSSPixelPoint point) const
+{
+    return m_device_pixel_converter.floored_device_point(point);
+}
+
+DevicePixelRect DisplayListRecordingContext::enclosing_device_rect(CSSPixelRect rect) const
+{
+    return m_device_pixel_converter.enclosing_device_rect(rect);
+}
+
+DevicePixelRect DisplayListRecordingContext::rounded_device_rect(CSSPixelRect rect) const
+{
+    return m_device_pixel_converter.rounded_device_rect(rect);
+}
+
+DevicePixelSize DisplayListRecordingContext::enclosing_device_size(CSSPixelSize size) const
+{
+    return m_device_pixel_converter.enclosing_device_size(size);
+}
+
+DevicePixelSize DisplayListRecordingContext::rounded_device_size(CSSPixelSize size) const
+{
+    return m_device_pixel_converter.rounded_device_size(size);
+}
+
+CSSPixels DisplayListRecordingContext::scale_to_css_pixels(DevicePixels device_pixels) const
+{
+    return CSSPixels::nearest_value_for(device_pixels.value() / m_device_pixel_converter.device_pixels_per_css_pixel());
+}
+
+CSSPixelPoint DisplayListRecordingContext::scale_to_css_point(DevicePixelPoint point) const
+{
+    return {
+        scale_to_css_pixels(point.x()),
+        scale_to_css_pixels(point.y())
+    };
+}
+
+CSSPixelSize DisplayListRecordingContext::scale_to_css_size(DevicePixelSize size) const
+{
+    return {
+        scale_to_css_pixels(size.width()),
+        scale_to_css_pixels(size.height())
+    };
+}
+
+CSSPixelRect DisplayListRecordingContext::scale_to_css_rect(DevicePixelRect rect) const
+{
+    return {
+        scale_to_css_point(rect.location()),
+        scale_to_css_size(rect.size())
+    };
+}
+
+}