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LibGfx: Paint whitespace characters (including  ) as empty space

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This fixes an issue where   would sometimes render as "A" in
web content.
This commit is contained in:
Andreas Kling 2022-07-09 15:12:10 +02:00
parent 2217d91b8d
commit 80ed7d220c
Notes: sideshowbarker 2024-07-17 10:54:57 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/80ed7d220c
1 changed files with 8 additions and 3 deletions
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11
Userland/Libraries/LibGfx/Painter.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
@ -41,6 +41,11 @@
namespace Gfx {
static bool should_paint_as_space(u32 code_point)
{
return is_ascii_space(code_point) || code_point == 0xa0;
}
template<BitmapFormat format = BitmapFormat::Invalid>
ALWAYS_INLINE Color get_pixel(Gfx::Bitmap const& bitmap, int x, int y)
{
@ -1435,7 +1440,7 @@ void draw_text_line(IntRect const& a_rect, Utf8View const& text, Font const& fon
u32 last_code_point { 0 };
for (auto it = text.begin(); it != text.end(); ++it) {
auto code_point = *it;
if (code_point == ' ') {
if (should_paint_as_space(code_point)) {
point.translate_by(space_width, 0);
last_code_point = code_point;
continue;
@ -2391,7 +2396,7 @@ void Painter::draw_text_run(FloatPoint const& baseline_start, Utf8View const& st
for (auto code_point_iterator = string.begin(); code_point_iterator != string.end(); ++code_point_iterator) {
auto code_point = *code_point_iterator;
if (code_point == ' ') {
if (should_paint_as_space(code_point)) {
x += space_width + font.glyph_spacing();
last_code_point = code_point;
continue;