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PixelPaint: Add ProjectLoader to abstract away opening of files

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This new class will open and parse files (either images directly or .pp
project files) and one can get the parsed Image as well as other
information from it.

This patch removes a bunch of 'try_create_from..." methods from Image in
favor of using the ProjectLoader.

The only json_metadata that is available are Guides for now.
This commit is contained in:
Tobias Christiansen 2021-09-03 18:46:11 +02:00 • committed by Andreas Kling
parent b3f53a0b5a
commit 508d563189
6 changed files with 142 additions and 115 deletions
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118
Userland/Applications/PixelPaint/Image.cpp
View file

@ -24,23 +24,6 @@
namespace PixelPaint {
static RefPtr<Gfx::Bitmap> try_decode_bitmap(ByteBuffer const& bitmap_data)
{
// Spawn a new ImageDecoder service process and connect to it.
auto client = ImageDecoderClient::Client::construct();
// FIXME: Find a way to avoid the memory copying here.
auto decoded_image_or_error = client->decode_image(bitmap_data);
if (!decoded_image_or_error.has_value())
return nullptr;
// FIXME: Support multi-frame images?
auto decoded_image = decoded_image_or_error.release_value();
if (decoded_image.frames.is_empty())
return nullptr;
return move(decoded_image.frames[0].bitmap);
}
RefPtr<Image> Image::try_create_with_size(Gfx::IntSize const& size)
{
if (size.is_empty())
@ -72,6 +55,23 @@ void Image::paint_into(GUI::Painter& painter, Gfx::IntRect const& dest_rect) con
}
}
RefPtr<Gfx::Bitmap> Image::try_decode_bitmap(ByteBuffer const& bitmap_data)
{
// Spawn a new ImageDecoder service process and connect to it.
auto client = ImageDecoderClient::Client::construct();
// FIXME: Find a way to avoid the memory copying here.
auto decoded_image_or_error = client->decode_image(bitmap_data);
if (!decoded_image_or_error.has_value())
return nullptr;
// FIXME: Support multi-frame images?
auto decoded_image = decoded_image_or_error.release_value();
if (decoded_image.frames.is_empty())
return nullptr;
return move(decoded_image.frames[0].bitmap);
}
RefPtr<Image> Image::try_create_from_bitmap(NonnullRefPtr<Gfx::Bitmap> bitmap)
{
auto image = try_create_with_size({ bitmap->width(), bitmap->height() });
@ -86,44 +86,6 @@ RefPtr<Image> Image::try_create_from_bitmap(NonnullRefPtr<Gfx::Bitmap> bitmap)
return image;
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_fd(int fd, String const& file_path)
{
auto file = Core::File::construct();
file->open(fd, Core::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::No);
if (file->has_error())
return String { file->error_string() };
return try_create_from_pixel_paint_file(file, file_path);
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_path(String const& file_path)
{
auto file_or_error = Core::File::open(file_path, Core::OpenMode::ReadOnly);
if (file_or_error.is_error())
return String { file_or_error.error().string() };
return try_create_from_pixel_paint_file(*file_or_error.value(), file_path);
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_file(Core::File& file, String const& file_path)
{
auto contents = file.read_all();
auto json_or_error = JsonValue::from_string(contents);
if (!json_or_error.has_value())
return String { "Not a valid PP file"sv };
auto& json = json_or_error.value().as_object();
auto image_or_error = try_create_from_pixel_paint_json(json);
if (image_or_error.is_error())
return image_or_error.release_error();
auto image = image_or_error.release_value();
image->set_path(file_path);
return image;
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_json(JsonObject const& json)
{
auto image = try_create_with_size({ json.get("width").to_i32(), json.get("height").to_i32() });
@ -163,52 +125,6 @@ Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_json(Jso
return image.release_nonnull();
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_fd_and_close(int fd, String const& file_path)
{
auto image_or_error = try_create_from_pixel_paint_fd(fd, file_path);
if (!image_or_error.is_error()) {
close(fd);
return image_or_error.release_value();
}
auto file_or_error = MappedFile::map_from_fd_and_close(fd, file_path);
if (file_or_error.is_error())
return String::formatted("Unable to mmap file {}", file_or_error.error().string());
auto& mapped_file = *file_or_error.value();
// FIXME: Find a way to avoid the memory copy here.
auto bitmap = try_decode_bitmap(ByteBuffer::copy(mapped_file.bytes()));
if (!bitmap)
return String { "Unable to decode image"sv };
auto image = Image::try_create_from_bitmap(bitmap.release_nonnull());
if (!image)
return String { "Unable to allocate Image"sv };
image->set_path(file_path);
return image.release_nonnull();
}
Result<NonnullRefPtr<Image>, String> Image::try_create_from_path(String const& file_path)
{
auto image_or_error = try_create_from_pixel_paint_path(file_path);
if (!image_or_error.is_error())
return image_or_error.release_value();
auto file_or_error = MappedFile::map(file_path);
if (file_or_error.is_error())
return String { "Unable to mmap file"sv };
auto& mapped_file = *file_or_error.value();
// FIXME: Find a way to avoid the memory copy here.
auto bitmap = try_decode_bitmap(ByteBuffer::copy(mapped_file.bytes()));
if (!bitmap)
return String { "Unable to decode image"sv };
auto image = Image::try_create_from_bitmap(bitmap.release_nonnull());
if (!image)
return String { "Unable to allocate Image"sv };
image->set_path(file_path);
return image.release_nonnull();
}
void Image::serialize_as_json(JsonObjectSerializer<StringBuilder>& json) const
{
json.add("width", m_size.width());