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/*
* Copyright (C) 2023 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WPEDRMCursor.h"
#include "WPEDRM.h"
#include "WPEDRMCursorTheme.h"
#include <wtf/TZoneMallocInlines.h>
namespace WPE {
namespace DRM {
WTF_MAKE_TZONE_ALLOCATED_IMPL(Cursor);
Cursor::Cursor(std::unique_ptr<Plane>&& plane, struct gbm_device* device, uint32_t cursorWidth, uint32_t cursorHeight)
: m_plane(WTFMove(plane))
, m_device(device)
, m_deviceWidth(cursorWidth)
, m_deviceHeight(cursorHeight)
, m_theme(CursorTheme::create())
{
}
Cursor::~Cursor()
{
}
bool Cursor::tryEnsureBuffer()
{
if (m_buffer)
return true;
auto* bo = gbm_bo_create(m_device, m_deviceWidth, m_deviceHeight, GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
if (!bo)
return false;
m_buffer = WPE::DRM::Buffer::create(bo);
if (!m_buffer) {
gbm_bo_destroy(bo);
return false;
}
return true;
}
void Cursor::updateBuffer(const uint8_t* pixels, uint32_t width, uint32_t height, uint32_t stride)
{
RELEASE_ASSERT(width <= m_deviceWidth);
RELEASE_ASSERT(height <= m_deviceHeight);
Vector<uint32_t> deviceBuffer(m_deviceWidth * m_deviceHeight);
for (uint32_t i = 0; i < height; ++i)
memcpy(&deviceBuffer[i * m_deviceWidth], pixels + i * stride, stride);
gbm_bo_write(m_buffer->bufferObject(), deviceBuffer.data(), deviceBuffer.sizeInBytes());
}
void Cursor::setFromName(const char* name, double scale)
{
if (!m_theme)
return;
if (!g_strcmp0(m_name.get(), name))
return;
m_name.reset(g_strdup(name));
if (!g_strcmp0(m_name.get(), "none")) {
m_isHidden = true;
return;
}
// FIXME: support animated cursors.
const auto& cursor = m_theme->cursor(name, scale, 1);
if (cursor.isEmpty()) {
g_warning("Cursor %s not found in theme", name);
return;
}
if (!tryEnsureBuffer())
return;
m_isHidden = false;
updateBuffer(reinterpret_cast<const uint8_t*>(cursor[0].pixels.data()), cursor[0].width, cursor[0].height, cursor[0].width * 4);
m_hotspot.x = cursor[0].hotspotX;
m_hotspot.y = cursor[0].hotspotY;
}
void Cursor::setFromBytes(GBytes* bytes, uint32_t width, uint32_t height, uint32_t stride, uint32_t hotspotX, uint32_t hotspotY)
{
if (!tryEnsureBuffer())
return;
m_isHidden = false;
m_name = nullptr;
updateBuffer(reinterpret_cast<const uint8_t*>(g_bytes_get_data(bytes, nullptr)), width, height, stride);
m_hotspot.x = hotspotX;
m_hotspot.y = hotspotY;
}
bool Cursor::setPosition(uint32_t x, uint32_t y)
{
if (x == m_position.x && y == m_position.y)
return false;
m_position.x = x;
m_position.y = y;
return true;
}
} // namespace WPE
} // namespace DRM
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