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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <WindowServer/Cursor.h>
#include <WindowServer/Screen.h>
#include <WindowServer/WindowManager.h>
namespace WindowServer {
CursorParams CursorParams::parse_from_filename(const StringView& cursor_path, const Gfx::IntPoint& 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(const Gfx::Bitmap& 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;
}
Cursor::Cursor(NonnullRefPtr<Gfx::Bitmap>&& bitmap, int scale_factor, const CursorParams& cursor_params)
: m_params(cursor_params.constrained(*bitmap))
, m_rect(bitmap->rect())
{
m_bitmaps.set(scale_factor, move(bitmap));
update_rect_if_animated();
}
void Cursor::update_rect_if_animated()
{
if (m_params.frames() > 1) {
VERIFY(m_rect.width() % m_params.frames() == 0);
m_rect.set_width(m_rect.width() / m_params.frames());
}
}
NonnullRefPtr<Cursor> Cursor::create(NonnullRefPtr<Gfx::Bitmap>&& bitmap, int scale_factor)
{
auto hotspot = bitmap->rect().center();
return adopt_ref(*new Cursor(move(bitmap), scale_factor, CursorParams(hotspot)));
}
RefPtr<Cursor> Cursor::create(const StringView& filename, const StringView& default_filename)
{
auto cursor = adopt_ref(*new Cursor());
if (cursor->load(filename, default_filename))
return cursor;
return {};
}
bool Cursor::load(const StringView& filename, const StringView& default_filename)
{
bool did_load_any = false;
auto load_bitmap = [&](const StringView& path, int scale_factor) {
auto bitmap = Gfx::Bitmap::load_from_file(path, scale_factor);
if (bitmap) {
did_load_any = true;
m_bitmaps.set(scale_factor, bitmap.release_nonnull());
}
};
Screen::for_each_scale_factor_in_use([&](int scale_factor) {
load_bitmap(filename, scale_factor);
return IterationDecision::Continue;
});
if (!did_load_any) {
Screen::for_each_scale_factor_in_use([&](int scale_factor) {
load_bitmap(default_filename, scale_factor);
return IterationDecision::Continue;
});
}
if (did_load_any) {
auto& bitmap = this->bitmap(1);
m_rect = bitmap.rect();
m_params = CursorParams::parse_from_filename(filename, m_rect.center()).constrained(bitmap);
update_rect_if_animated();
}
return did_load_any;
}
RefPtr<Cursor> Cursor::create(Gfx::StandardCursor standard_cursor)
{
switch (standard_cursor) {
case Gfx::StandardCursor::None:
return nullptr;
case Gfx::StandardCursor::Hidden:
return WindowManager::the().hidden_cursor();
case Gfx::StandardCursor::Arrow:
return WindowManager::the().arrow_cursor();
case Gfx::StandardCursor::Crosshair:
return WindowManager::the().crosshair_cursor();
case Gfx::StandardCursor::IBeam:
return WindowManager::the().i_beam_cursor();
case Gfx::StandardCursor::ResizeHorizontal:
return WindowManager::the().resize_horizontally_cursor();
case Gfx::StandardCursor::ResizeVertical:
return WindowManager::the().resize_vertically_cursor();
case Gfx::StandardCursor::ResizeDiagonalTLBR:
return WindowManager::the().resize_diagonally_tlbr_cursor();
case Gfx::StandardCursor::ResizeDiagonalBLTR:
return WindowManager::the().resize_diagonally_bltr_cursor();
case Gfx::StandardCursor::ResizeColumn:
return WindowManager::the().resize_column_cursor();
case Gfx::StandardCursor::ResizeRow:
return WindowManager::the().resize_row_cursor();
case Gfx::StandardCursor::Hand:
return WindowManager::the().hand_cursor();
case Gfx::StandardCursor::Help:
return WindowManager::the().help_cursor();
case Gfx::StandardCursor::Drag:
return WindowManager::the().drag_cursor();
case Gfx::StandardCursor::Move:
return WindowManager::the().move_cursor();
case Gfx::StandardCursor::Wait:
return WindowManager::the().wait_cursor();
case Gfx::StandardCursor::Disallowed:
return WindowManager::the().disallowed_cursor();
default:
VERIFY_NOT_REACHED();
}
}
}
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