mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 01:59:14 +03:00
101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Format.h>
|
|
#include <AK/LexicalPath.h>
|
|
#include <LibGfx/Bitmap.h>
|
|
#include <LibGfx/CursorParams.h>
|
|
|
|
namespace Gfx {
|
|
|
|
CursorParams CursorParams::parse_from_filename(StringView cursor_path, Gfx::IntPoint const& default_hotspot)
|
|
{
|
|
LexicalPath path(cursor_path);
|
|
auto file_title = path.title();
|
|
auto last_dot_in_title = file_title.find_last('.');
|
|
if (!last_dot_in_title.has_value() || last_dot_in_title.value() == 0) {
|
|
// No encoded params in filename. Not an error, we'll just use defaults
|
|
return { default_hotspot };
|
|
}
|
|
auto params_str = file_title.substring_view(last_dot_in_title.value() + 1);
|
|
|
|
CursorParams params(default_hotspot);
|
|
bool in_display_scale_part = false;
|
|
for (size_t i = 0; i + 1 < params_str.length() && !in_display_scale_part;) {
|
|
auto property = params_str[i++];
|
|
|
|
auto value = [&]() -> Optional<size_t> {
|
|
size_t k = i;
|
|
while (k < params_str.length()) {
|
|
auto ch = params_str[k];
|
|
if (ch < '0' || ch > '9')
|
|
break;
|
|
k++;
|
|
}
|
|
if (k == i)
|
|
return {};
|
|
auto parsed_number = params_str.substring_view(i, k - i).to_uint();
|
|
if (!parsed_number.has_value())
|
|
return {};
|
|
i = k;
|
|
return parsed_number.value();
|
|
}();
|
|
if (!value.has_value()) {
|
|
dbgln("Failed to parse value for property '{}' from parsed cursor path: {}", property, cursor_path);
|
|
return { default_hotspot };
|
|
}
|
|
switch (property) {
|
|
case 'x':
|
|
params.m_hotspot.set_x(value.value());
|
|
params.m_have_hotspot = true;
|
|
break;
|
|
case 'y':
|
|
params.m_hotspot.set_y(value.value());
|
|
params.m_have_hotspot = true;
|
|
break;
|
|
case 'f':
|
|
if (value.value() > 1)
|
|
params.m_frames = value.value();
|
|
break;
|
|
case 't':
|
|
if (value.value() >= 100 && value.value() <= 1000)
|
|
params.m_frame_ms = value.value();
|
|
else
|
|
dbgln("Cursor frame rate outside of valid range (100-1000ms)");
|
|
break;
|
|
case '-':
|
|
in_display_scale_part = true;
|
|
break;
|
|
default:
|
|
dbgln("Ignore unknown property '{}' with value {} parsed from cursor path: {}", property, value.value(), cursor_path);
|
|
return { default_hotspot };
|
|
}
|
|
}
|
|
|
|
return params;
|
|
}
|
|
|
|
CursorParams CursorParams::constrained(Gfx::Bitmap const& bitmap) const
|
|
{
|
|
CursorParams params(*this);
|
|
auto rect = bitmap.rect();
|
|
if (params.m_frames > 1) {
|
|
if (rect.width() % params.m_frames == 0) {
|
|
rect.set_width(rect.width() / (int)params.m_frames);
|
|
} else {
|
|
dbgln("Cannot divide cursor dimensions {} into {} frames", rect, params.m_frames);
|
|
params.m_frames = 1;
|
|
}
|
|
}
|
|
if (params.m_have_hotspot)
|
|
params.m_hotspot.constrain(rect);
|
|
else
|
|
params.m_hotspot = rect.center();
|
|
return params;
|
|
}
|
|
|
|
}
|