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https://github.com/LadybirdBrowser/ladybird.git
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655d9d1462
This fixes a plethora of rounding problems on many websites. In the future, we may want to replace this with fixed-point arithmetic (bug #18566) for performance (and consistency with other engines), but in the meantime this makes the web look a bit better. :^) There's a lot more things that could be converted to doubles, which would reduce the amount of casting necessary in this patch. We can do that incrementally, however.
80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
/*
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Vector.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Palette.h>
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#include <LibGfx/Rect.h>
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#include <LibWeb/PixelUnits.h>
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#include <LibWeb/SVG/SVGContext.h>
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namespace Web {
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class PaintContext {
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public:
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PaintContext(Gfx::Painter& painter, Palette const& palette, double device_pixels_per_css_pixel);
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Gfx::Painter& painter() const { return m_painter; }
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Palette const& palette() const { return m_palette; }
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bool has_svg_context() const { return m_svg_context.has_value(); }
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SVGContext& svg_context();
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void set_svg_context(SVGContext);
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void clear_svg_context();
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bool should_show_line_box_borders() const { return m_should_show_line_box_borders; }
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void set_should_show_line_box_borders(bool value) { m_should_show_line_box_borders = value; }
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DevicePixelRect device_viewport_rect() const { return m_device_viewport_rect; }
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void set_device_viewport_rect(DevicePixelRect const& rect) { m_device_viewport_rect = rect; }
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CSSPixelRect css_viewport_rect() const;
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[[nodiscard]] bool would_be_fully_clipped_by_painter(DevicePixelRect) const;
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bool has_focus() const { return m_focus; }
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void set_has_focus(bool focus) { m_focus = focus; }
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DevicePixels enclosing_device_pixels(CSSPixels css_pixels) const;
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DevicePixels floored_device_pixels(CSSPixels css_pixels) const;
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DevicePixels rounded_device_pixels(CSSPixels css_pixels) const;
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DevicePixelPoint rounded_device_point(CSSPixelPoint) const;
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DevicePixelPoint floored_device_point(CSSPixelPoint) const;
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DevicePixelRect enclosing_device_rect(CSSPixelRect) const;
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DevicePixelRect rounded_device_rect(CSSPixelRect) const;
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DevicePixelSize enclosing_device_size(CSSPixelSize) const;
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DevicePixelSize rounded_device_size(CSSPixelSize) const;
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CSSPixels scale_to_css_pixels(DevicePixels) const;
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CSSPixelPoint scale_to_css_point(DevicePixelPoint) const;
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CSSPixelSize scale_to_css_size(DevicePixelSize) const;
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CSSPixelRect scale_to_css_rect(DevicePixelRect) const;
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PaintContext clone(Gfx::Painter& painter) const
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{
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auto clone = PaintContext(painter, m_palette, m_device_pixels_per_css_pixel);
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clone.m_device_viewport_rect = m_device_viewport_rect;
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clone.m_should_show_line_box_borders = m_should_show_line_box_borders;
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clone.m_focus = m_focus;
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clone.m_svg_context = m_svg_context;
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return clone;
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}
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double device_pixels_per_css_pixel() const { return m_device_pixels_per_css_pixel; }
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private:
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Gfx::Painter& m_painter;
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Palette m_palette;
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Optional<SVGContext> m_svg_context;
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double m_device_pixels_per_css_pixel { 0 };
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DevicePixelRect m_device_viewport_rect;
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bool m_should_show_line_box_borders { false };
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bool m_focus { false };
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};
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}
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