mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 10:47:44 +00:00
PixelPaint: Use ErrorOr<T> for Image and Layer creation helpers
This commit is contained in:
parent
9268ed9605
commit
801d46d02c
7 changed files with 76 additions and 113 deletions
|
@ -25,15 +25,14 @@
|
|||
|
||||
namespace PixelPaint {
|
||||
|
||||
RefPtr<Image> Image::try_create_with_size(Gfx::IntSize const& size)
|
||||
ErrorOr<NonnullRefPtr<Image>> Image::try_create_with_size(Gfx::IntSize const& size)
|
||||
{
|
||||
if (size.is_empty())
|
||||
return nullptr;
|
||||
VERIFY(!size.is_empty());
|
||||
|
||||
if (size.width() > 16384 || size.height() > 16384)
|
||||
return nullptr;
|
||||
return Error::from_string_literal("Image size too large"sv);
|
||||
|
||||
return adopt_ref(*new Image(size));
|
||||
return adopt_nonnull_ref_or_enomem(new (nothrow) Image(size));
|
||||
}
|
||||
|
||||
Image::Image(Gfx::IntSize const& size)
|
||||
|
@ -56,42 +55,34 @@ void Image::paint_into(GUI::Painter& painter, Gfx::IntRect const& dest_rect) con
|
|||
}
|
||||
}
|
||||
|
||||
RefPtr<Gfx::Bitmap> Image::try_decode_bitmap(ReadonlyBytes const& bitmap_data)
|
||||
ErrorOr<NonnullRefPtr<Gfx::Bitmap>> Image::try_decode_bitmap(ReadonlyBytes 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;
|
||||
auto maybe_decoded_image = client->decode_image(bitmap_data);
|
||||
if (!maybe_decoded_image.has_value())
|
||||
return Error::from_string_literal("Image decode failed"sv);
|
||||
|
||||
// FIXME: Support multi-frame images?
|
||||
auto decoded_image = decoded_image_or_error.release_value();
|
||||
auto decoded_image = maybe_decoded_image.release_value();
|
||||
if (decoded_image.frames.is_empty())
|
||||
return nullptr;
|
||||
return move(decoded_image.frames[0].bitmap);
|
||||
return Error::from_string_literal("Image decode failed (no frames)"sv);
|
||||
return decoded_image.frames[0].bitmap.release_nonnull();
|
||||
}
|
||||
|
||||
RefPtr<Image> Image::try_create_from_bitmap(NonnullRefPtr<Gfx::Bitmap> bitmap)
|
||||
ErrorOr<NonnullRefPtr<Image>> Image::try_create_from_bitmap(NonnullRefPtr<Gfx::Bitmap> bitmap)
|
||||
{
|
||||
auto image = try_create_with_size({ bitmap->width(), bitmap->height() });
|
||||
if (!image)
|
||||
return nullptr;
|
||||
|
||||
auto layer = Layer::try_create_with_bitmap(*image, *bitmap, "Background");
|
||||
if (!layer)
|
||||
return nullptr;
|
||||
|
||||
image->add_layer(layer.release_nonnull());
|
||||
auto image = TRY(try_create_with_size({ bitmap->width(), bitmap->height() }));
|
||||
auto layer = TRY(Layer::try_create_with_bitmap(*image, *bitmap, "Background"));
|
||||
image->add_layer(move(layer));
|
||||
return image;
|
||||
}
|
||||
|
||||
Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_json(JsonObject const& json)
|
||||
ErrorOr<NonnullRefPtr<Image>> 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() });
|
||||
if (!image)
|
||||
return String { "Image memory allocation failed" };
|
||||
auto image = TRY(try_create_with_size({ json.get("width").to_i32(), json.get("height").to_i32() }));
|
||||
|
||||
auto layers_value = json.get("layers");
|
||||
for (auto& layer_value : layers_value.as_array().values()) {
|
||||
|
@ -101,21 +92,16 @@ Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_json(Jso
|
|||
auto bitmap_base64_encoded = layer_object.get("bitmap").as_string();
|
||||
auto bitmap_data = decode_base64(bitmap_base64_encoded);
|
||||
if (!bitmap_data.has_value())
|
||||
return String { "Base64 decode failed"sv };
|
||||
return Error::from_string_literal("Base64 decode failed"sv);
|
||||
|
||||
auto bitmap = try_decode_bitmap(bitmap_data.value());
|
||||
if (!bitmap)
|
||||
return String { "Layer bitmap decode failed"sv };
|
||||
|
||||
auto layer = Layer::try_create_with_bitmap(*image, bitmap.release_nonnull(), name);
|
||||
if (!layer)
|
||||
return String { "Layer allocation failed"sv };
|
||||
auto bitmap = TRY(try_decode_bitmap(bitmap_data.value()));
|
||||
auto layer = TRY(Layer::try_create_with_bitmap(*image, move(bitmap), name));
|
||||
|
||||
auto width = layer_object.get("width").to_i32();
|
||||
auto height = layer_object.get("height").to_i32();
|
||||
|
||||
if (width != layer->size().width() || height != layer->size().height())
|
||||
return String { "Decoded layer bitmap has wrong size"sv };
|
||||
return Error::from_string_literal("Decoded layer bitmap has wrong size"sv);
|
||||
|
||||
image->add_layer(*layer);
|
||||
|
||||
|
@ -125,7 +111,7 @@ Result<NonnullRefPtr<Image>, String> Image::try_create_from_pixel_paint_json(Jso
|
|||
layer->set_selected(layer_object.get("selected").as_bool());
|
||||
}
|
||||
|
||||
return image.release_nonnull();
|
||||
return image;
|
||||
}
|
||||
|
||||
void Image::serialize_as_json(JsonObjectSerializer<StringBuilder>& json) const
|
||||
|
@ -238,29 +224,24 @@ void Image::add_layer(NonnullRefPtr<Layer> layer)
|
|||
did_modify_layer_stack();
|
||||
}
|
||||
|
||||
RefPtr<Image> Image::take_snapshot() const
|
||||
ErrorOr<NonnullRefPtr<Image>> Image::take_snapshot() const
|
||||
{
|
||||
auto snapshot = try_create_with_size(m_size);
|
||||
if (!snapshot)
|
||||
return nullptr;
|
||||
auto snapshot = TRY(try_create_with_size(m_size));
|
||||
for (const auto& layer : m_layers) {
|
||||
auto layer_snapshot = Layer::try_create_snapshot(*snapshot, layer);
|
||||
if (!layer_snapshot)
|
||||
return nullptr;
|
||||
snapshot->add_layer(layer_snapshot.release_nonnull());
|
||||
auto layer_snapshot = TRY(Layer::try_create_snapshot(*snapshot, layer));
|
||||
snapshot->add_layer(move(layer_snapshot));
|
||||
}
|
||||
return snapshot;
|
||||
}
|
||||
|
||||
void Image::restore_snapshot(Image const& snapshot)
|
||||
ErrorOr<void> Image::restore_snapshot(Image const& snapshot)
|
||||
{
|
||||
m_layers.clear();
|
||||
select_layer(nullptr);
|
||||
|
||||
bool layer_selected = false;
|
||||
for (const auto& snapshot_layer : snapshot.m_layers) {
|
||||
auto layer = Layer::try_create_snapshot(*this, snapshot_layer);
|
||||
VERIFY(layer);
|
||||
for (auto const& snapshot_layer : snapshot.m_layers) {
|
||||
auto layer = TRY(Layer::try_create_snapshot(*this, snapshot_layer));
|
||||
if (layer->is_selected()) {
|
||||
select_layer(layer.ptr());
|
||||
layer_selected = true;
|
||||
|
@ -272,6 +253,7 @@ void Image::restore_snapshot(Image const& snapshot)
|
|||
select_layer(&layer(0));
|
||||
|
||||
did_modify_layer_stack();
|
||||
return {};
|
||||
}
|
||||
|
||||
size_t Image::index_of(Layer const& layer) const
|
||||
|
@ -470,14 +452,15 @@ void Image::did_change_rect(Gfx::IntRect const& a_modified_rect)
|
|||
}
|
||||
|
||||
ImageUndoCommand::ImageUndoCommand(Image& image)
|
||||
: m_snapshot(image.take_snapshot())
|
||||
: m_snapshot(image.take_snapshot().release_value_but_fixme_should_propagate_errors())
|
||||
, m_image(image)
|
||||
{
|
||||
}
|
||||
|
||||
void ImageUndoCommand::undo()
|
||||
{
|
||||
m_image.restore_snapshot(*m_snapshot);
|
||||
// FIXME: Handle errors.
|
||||
(void)m_image.restore_snapshot(*m_snapshot);
|
||||
}
|
||||
|
||||
void ImageUndoCommand::redo()
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue