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doc_exporter.cpp
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// Aseprite
// Copyright (C) 2018-2020 Igara Studio S.A.
// Copyright (C) 2001-2018 David Capello
//
// This program is distributed under the terms of
// the End-User License Agreement for Aseprite.
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "app/doc_exporter.h"
#include "app/cmd/set_pixel_format.h"
#include "app/console.h"
#include "app/context.h"
#include "app/doc.h"
#include "app/file/file.h"
#include "app/filename_formatter.h"
#include "app/restore_visible_layers.h"
#include "app/snap_to_grid.h"
#include "app/util/autocrop.h"
#include "base/clamp.h"
#include "base/convert_to.h"
#include "base/fs.h"
#include "base/fstream_path.h"
#include "base/replace_string.h"
#include "base/string.h"
#include "doc/algorithm/shrink_bounds.h"
#include "doc/cel.h"
#include "doc/image.h"
#include "doc/images_map.h"
#include "doc/images_map.h"
#include "doc/layer.h"
#include "doc/palette.h"
#include "doc/primitives.h"
#include "doc/selected_frames.h"
#include "doc/selected_layers.h"
#include "doc/slice.h"
#include "doc/sprite.h"
#include "doc/tag.h"
#include "gfx/packing_rects.h"
#include "gfx/rect_io.h"
#include "gfx/size.h"
#include "render/dithering.h"
#include "render/ordered_dither.h"
#include "render/render.h"
#include "ver/info.h"
#include <cstdio>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <memory>
#include <set>
#include <vector>
#define DX_TRACE(...) // TRACEARGS
using namespace doc;
namespace {
std::string escape_for_json(const std::string& path)
{
std::string res = path;
base::replace_string(res, "\\", "\\\\");
base::replace_string(res, "\"", "\\\"");
return res;
}
std::ostream& operator<<(std::ostream& os, const doc::UserData& data)
{
doc::color_t color = data.color();
if (doc::rgba_geta(color)) {
os << ", \"color\": \"#"
<< std::hex << std::setfill('0')
<< std::setw(2) << (int)doc::rgba_getr(color)
<< std::setw(2) << (int)doc::rgba_getg(color)
<< std::setw(2) << (int)doc::rgba_getb(color)
<< std::setw(2) << (int)doc::rgba_geta(color)
<< std::dec
<< "\"";
}
if (!data.text().empty())
os << ", \"data\": \"" << escape_for_json(data.text()) << "\"";
return os;
}
} // anonymous namespace
namespace app {
typedef std::shared_ptr<gfx::Rect> SharedRectPtr;
DocExporter::Item::Item(Doc* doc,
const doc::Tag* tag,
const doc::SelectedLayers* selLayers,
const doc::SelectedFrames* selFrames)
: doc(doc)
, tag(tag)
, selLayers(selLayers ? new doc::SelectedLayers(*selLayers): nullptr)
, selFrames(selFrames ? new doc::SelectedFrames(*selFrames): nullptr)
{
}
DocExporter::Item::Item(Item&& other)
: doc(other.doc)
, tag(other.tag)
, selLayers(other.selLayers)
, selFrames(other.selFrames)
{
other.selLayers = nullptr;
other.selFrames = nullptr;
}
DocExporter::Item::~Item()
{
delete selLayers;
delete selFrames;
}
int DocExporter::Item::frames() const
{
if (selFrames)
return selFrames->size();
else if (tag) {
int result = tag->toFrame() - tag->fromFrame() + 1;
return base::clamp(result, 1, doc->sprite()->totalFrames());
}
else
return doc->sprite()->totalFrames();
}
doc::SelectedFrames DocExporter::Item::getSelectedFrames() const
{
if (selFrames)
return *selFrames;
doc::SelectedFrames frames;
if (tag) {
frames.insert(base::clamp(tag->fromFrame(), 0, doc->sprite()->lastFrame()),
base::clamp(tag->toFrame(), 0, doc->sprite()->lastFrame()));
}
else {
frames.insert(0, doc->sprite()->lastFrame());
}
return frames;
}
class DocExporter::Sample {
public:
Sample(Doc* document, Sprite* sprite, SelectedLayers* selLayers,
frame_t frame,
const Tag* tag,
const std::string& filename,
const int innerPadding,
const bool extrude) :
m_document(document),
m_sprite(sprite),
m_selLayers(selLayers),
m_frame(frame),
m_tag(tag),
m_filename(filename),
m_innerPadding(innerPadding),
m_extrude(extrude),
m_isLinked(false),
m_isDuplicated(false),
m_originalSize(sprite->width(), sprite->height()),
m_trimmedBounds(0, 0, sprite->width(), sprite->height()),
m_inTextureBounds(std::make_shared<gfx::Rect>(0, 0, sprite->width(), sprite->height())) {
}
Doc* document() const { return m_document; }
Sprite* sprite() const { return m_sprite; }
Layer* layer() const {
return (m_selLayers && m_selLayers->size() == 1 ? *m_selLayers->begin():
nullptr);
}
const Tag* tag() const { return m_tag; }
SelectedLayers* selectedLayers() const { return m_selLayers; }
frame_t frame() const { return m_frame; }
std::string filename() const { return m_filename; }
const gfx::Size& originalSize() const { return m_originalSize; }
const gfx::Rect& trimmedBounds() const { return m_trimmedBounds; }
const gfx::Rect& inTextureBounds() const { return *m_inTextureBounds; }
const SharedRectPtr& sharedBounds() const { return m_inTextureBounds; }
gfx::Size requiredSize() const {
// if extrude option is enabled, an extra pixel is needed for each side
// left+right borders and top+bottom borders
int extraExtrudePixels = m_extrude ? 2 : 0;
gfx::Size size = m_trimmedBounds.size();
size.w += 2*m_innerPadding + extraExtrudePixels;
size.h += 2*m_innerPadding + extraExtrudePixels;
return size;
}
bool trimmed() const {
return (m_trimmedBounds.x > 0 ||
m_trimmedBounds.y > 0 ||
m_trimmedBounds.w != m_originalSize.w ||
m_trimmedBounds.h != m_originalSize.h);
}
void setTrimmedBounds(const gfx::Rect& bounds) {
// TODO we cannot assign an empty rectangle (samples that are
// completely trimmed out should be included as a sample of size 1x1)
ASSERT(!bounds.isEmpty());
m_trimmedBounds = bounds;
}
void setInTextureBounds(const gfx::Rect& bounds) {
ASSERT(!bounds.isEmpty());
*m_inTextureBounds = bounds;
}
void setSharedBounds(const SharedRectPtr& bounds) {
m_inTextureBounds = bounds;
}
bool isLinked() const { return m_isLinked; }
bool isDuplicated() const { return m_isDuplicated; }
bool isEmpty() const {
// TODO trimmed bounds cannot be empty now (samples that are
// completely trimmed out are included as a sample of size 1x1)
ASSERT(!m_trimmedBounds.isEmpty());
return m_trimmedBounds.isEmpty();
}
void setLinked() { m_isLinked = true; }
void setDuplicated() { m_isDuplicated = true; }
ImageRef createRender(ImageBufferPtr& imageBuf) {
ASSERT(m_sprite);
ImageRef render(
Image::create(m_sprite->pixelFormat(),
m_trimmedBounds.w,
m_trimmedBounds.h,
imageBuf));
render->setMaskColor(m_sprite->transparentColor());
clear_image(render.get(), m_sprite->transparentColor());
renderSample(render.get(), 0, 0, false);
return render;
}
void renderSample(doc::Image* dst, int x, int y, bool extrude) const {
RestoreVisibleLayers layersVisibility;
if (m_selLayers)
layersVisibility.showSelectedLayers(m_sprite,
*m_selLayers);
render::Render render;
// 1) We cannot use the Preferences because this is called from a non-UI thread
// 2) We should use the new blend mode always when we're saving files
//render.setNewBlend(Preferences::instance().experimental.newBlend());
if (extrude) {
const gfx::Rect& trim = m_trimmedBounds;
// Displaced position onto the destination texture
int dx[] = { 0, 1, trim.w+1 };
int dy[] = { 0, 1, trim.h+1 };
// Starting point of the area to be copied from the original image
// taking into account the size of the trimmed sprite
int srcx[] = { trim.x, trim.x, trim.x2()-1 };
int srcy[] = { trim.y, trim.y, trim.y2()-1 };
// Size of the area to be copied from original image, starting at
// the point (srcx[i], srxy[j])
int szx[] = { 1, trim.w, 1 };
int szy[] = { 1, trim.h, 1 };
// Render a 9-patch image extruding the sample one pixel on each
// side.
for (int j=0; j<3; ++j) {
for (int i=0; i<3; ++i) {
gfx::Clip clip(x+dx[i], y+dy[j], gfx::RectT<int>(srcx[i], srcy[j], szx[i], szy[j]));
render.renderSprite(dst, m_sprite, m_frame, clip);
}
}
}
else {
gfx::Clip clip(x, y, m_trimmedBounds);
render.renderSprite(dst, m_sprite, m_frame, clip);
}
}
private:
Doc* m_document;
Sprite* m_sprite;
SelectedLayers* m_selLayers;
frame_t m_frame;
const Tag* m_tag;
std::string m_filename;
int m_innerPadding;
bool m_extrude;
bool m_isLinked;
bool m_isDuplicated;
gfx::Size m_originalSize;
gfx::Rect m_trimmedBounds;
SharedRectPtr m_inTextureBounds;
};
class DocExporter::Samples {
public:
typedef std::vector<Sample> List;
typedef List::iterator iterator;
typedef List::const_iterator const_iterator;
bool empty() const { return m_samples.empty(); }
int size() const { return int(m_samples.size()); }
void addSample(const Sample& sample) {
m_samples.push_back(sample);
}
const Sample& operator[](const size_t i) const {
return m_samples[i];
}
iterator begin() { return m_samples.begin(); }
iterator end() { return m_samples.end(); }
const_iterator begin() const { return m_samples.begin(); }
const_iterator end() const { return m_samples.end(); }
private:
List m_samples;
};
class DocExporter::LayoutSamples {
public:
virtual ~LayoutSamples() { }
virtual void layoutSamples(Samples& samples,
int borderPadding,
int shapePadding,
int& width, int& height,
base::task_token& token) = 0;
};
class DocExporter::SimpleLayoutSamples : public DocExporter::LayoutSamples {
public:
SimpleLayoutSamples(SpriteSheetType type,
int maxCols, int maxRows,
bool splitLayers, bool splitTags,
bool mergeDups)
: m_type(type)
, m_maxCols(maxCols)
, m_maxRows(maxRows)
, m_splitLayers(splitLayers)
, m_splitTags(splitTags)
, m_mergeDups(mergeDups) {
}
void layoutSamples(Samples& samples,
int borderPadding,
int shapePadding,
int& width, int& height,
base::task_token& token) override {
DX_TRACE("SimpleLayoutSamples type", (int)m_type, width, height);
const bool breakBands =
(m_type == SpriteSheetType::Columns ||
m_type == SpriteSheetType::Rows);
const Sprite* oldSprite = nullptr;
const Layer* oldLayer = nullptr;
const Tag* oldTag = nullptr;
doc::ImagesMap duplicates;
gfx::Point framePt(borderPadding, borderPadding);
gfx::Size rowSize(0, 0);
int i = 0;
int itemInBand = 0;
int itemsPerBand = -1;
if (breakBands) {
if (m_type == SpriteSheetType::Columns && m_maxRows > 0)
itemsPerBand = m_maxRows;
if (m_type == SpriteSheetType::Rows && m_maxCols > 0)
itemsPerBand = m_maxCols;
}
for (auto& sample : samples) {
if (token.canceled())
return;
token.set_progress(0.2f + 0.2f * i / samples.size());
if (sample.isLinked()) {
++i;
continue;
}
if (sample.isEmpty()) {
sample.setInTextureBounds(gfx::Rect(0, 0, 0, 0));
++i;
continue;
}
if (m_mergeDups) {
doc::ImageBufferPtr sampleBuf = std::make_shared<doc::ImageBuffer>();
doc::ImageRef sampleRender(sample.createRender(sampleBuf));
auto it = duplicates.find(sampleRender);
if (it != duplicates.end()) {
const uint32_t j = it->second;
sample.setDuplicated();
sample.setSharedBounds(samples[j].sharedBounds());
++i;
continue;
}
else {
duplicates[sampleRender] = i;
}
}
const Sprite* sprite = sample.sprite();
const Layer* layer = sample.layer();
const Tag* tag = sample.tag();
gfx::Size size = sample.requiredSize();
if (breakBands && oldSprite) {
const bool nextBand =
((oldSprite != sprite) ||
(m_splitLayers && oldLayer != layer) ||
(m_splitTags && oldTag != tag) ||
(itemInBand == itemsPerBand));
if (m_type == SpriteSheetType::Columns) {
// If the user didn't specify a height for the texture, we
// put each sprite/layer in a different column.
if (height == 0) {
// New sprite or layer, go to next column.
if (nextBand) {
framePt.x += rowSize.w + shapePadding;
framePt.y = borderPadding;
rowSize = size;
itemInBand = 0;
}
}
// When a texture height is specified, we can put different
// sprites/layers in each column until we reach the texture
// bottom-border.
else if (framePt.y+size.h > height-borderPadding) {
framePt.x += rowSize.w + shapePadding;
framePt.y = borderPadding;
rowSize = size;
}
}
else if (m_type == SpriteSheetType::Rows) {
// If the user didn't specify a width for the texture, we put
// each sprite/layer in a different row.
if (width == 0) {
// New sprite or layer, go to next row.
if (nextBand) {
framePt.x = borderPadding;
framePt.y += rowSize.h + shapePadding;
rowSize = size;
itemInBand = 0;
}
}
// When a texture width is specified, we can put different
// sprites/layers in each row until we reach the texture
// right-border.
else if (framePt.x+size.w > width-borderPadding) {
framePt.x = borderPadding;
framePt.y += rowSize.h + shapePadding;
rowSize = size;
}
}
else {
ASSERT(false);
}
}
sample.setInTextureBounds(gfx::Rect(framePt, size));
// Next frame position.
if (m_type == SpriteSheetType::Vertical ||
m_type == SpriteSheetType::Columns) {
framePt.y += size.h + shapePadding;
}
else if (m_type == SpriteSheetType::Horizontal ||
m_type == SpriteSheetType::Rows) {
framePt.x += size.w + shapePadding;
}
rowSize = rowSize.createUnion(size);
oldSprite = sprite;
oldLayer = layer;
oldTag = tag;
++itemInBand;
++i;
}
DX_TRACE("-> SimpleLayoutSamples", width, height);
}
private:
SpriteSheetType m_type;
int m_maxCols;
int m_maxRows;
bool m_splitLayers;
bool m_splitTags;
bool m_mergeDups;
};
class DocExporter::BestFitLayoutSamples : public DocExporter::LayoutSamples {
public:
void layoutSamples(Samples& samples,
int borderPadding,
int shapePadding,
int& width, int& height,
base::task_token& token) override {
gfx::PackingRects pr(borderPadding, shapePadding);
doc::ImagesMap duplicates;
uint32_t i = 0;
for (auto& sample : samples) {
if (token.canceled())
return;
token.set_progress_range(0.2f, 0.3f);
token.set_progress(float(i) / samples.size());
if (sample.isLinked() ||
sample.isEmpty()) {
++i;
continue;
}
// We have to use one ImageBuffer for each image because we're
// going to store all images in the "duplicates" map.
doc::ImageBufferPtr sampleBuf = std::make_shared<doc::ImageBuffer>();
doc::ImageRef sampleRender(sample.createRender(sampleBuf));
auto it = duplicates.find(sampleRender);
if (it != duplicates.end()) {
const uint32_t j = it->second;
sample.setDuplicated();
sample.setSharedBounds(samples[j].sharedBounds());
}
else {
duplicates[sampleRender] = i;
pr.add(sample.requiredSize());
}
++i;
}
token.set_progress_range(0.3f, 0.4f);
if (width == 0 || height == 0) {
gfx::Size sz = pr.bestFit(token, width, height);
width = sz.w;
height = sz.h;
}
else {
pr.pack(gfx::Size(width, height), token);
}
token.set_progress_range(0.0f, 1.0f);
auto it = pr.begin();
for (auto& sample : samples) {
if (sample.isLinked() ||
sample.isDuplicated() ||
sample.isEmpty())
continue;
ASSERT(it != pr.end());
sample.setInTextureBounds(*(it++));
}
}
};
DocExporter::DocExporter()
: m_docBuf(std::make_shared<doc::ImageBuffer>())
, m_sampleBuf(std::make_shared<doc::ImageBuffer>())
{
m_cache.spriteId = doc::NullId;
reset();
}
void DocExporter::reset()
{
m_sheetType = SpriteSheetType::None;
m_dataFormat = SpriteSheetDataFormat::Default;
m_dataFilename.clear();
m_textureFilename.clear();
m_filenameFormat.clear();
m_textureWidth = 0;
m_textureHeight = 0;
m_textureColumns = 0;
m_textureRows = 0;
m_borderPadding = 0;
m_shapePadding = 0;
m_innerPadding = 0;
m_ignoreEmptyCels = false;
m_mergeDuplicates = false;
m_trimSprite = false;
m_trimCels = false;
m_trimByGrid = false;
m_extrude = false;
m_splitLayers = false;
m_splitTags = false;
m_listTags = false;
m_listLayers = false;
m_listSlices = false;
m_documents.clear();
m_tagDelta.clear();
}
void DocExporter::setDocImageBuffer(const doc::ImageBufferPtr& docBuf)
{
m_docBuf = docBuf;
}
Doc* DocExporter::exportSheet(Context* ctx, base::task_token& token)
{
// We output the metadata to std::cout if the user didn't specify a file.
std::ofstream fos;
std::streambuf* osbuf = nullptr;
if (m_dataFilename.empty()) {
// Redirect to stdout if we are running in batch mode
if (!ctx->isUIAvailable())
osbuf = std::cout.rdbuf();
}
else {
// Make missing directories for the json file
{
std::string dir = base::get_file_path(m_dataFilename);
try {
if (!base::is_directory(dir))
base::make_all_directories(dir);
}
catch (const std::exception& ex) {
Console console;
console.printf("Error creating directory \"%s\"\n%s",
dir.c_str(), ex.what());
}
}
fos.open(FSTREAM_PATH(m_dataFilename), std::ios::out);
osbuf = fos.rdbuf();
}
std::ostream os(osbuf);
// Steps for sheet construction:
// 1) Capture the samples (each sprite+frame pair)
Samples samples;
captureSamples(samples, token);
if (samples.empty()) {
if (!ctx->isUIAvailable()) {
Console console;
console.printf("No documents to export");
}
return nullptr;
}
if (token.canceled())
return nullptr;
token.set_progress(0.2f);
// 2) Layout those samples in a texture field.
layoutSamples(samples, token);
if (token.canceled())
return nullptr;
token.set_progress(0.4f);
// 3) Create and render the texture.
std::unique_ptr<Doc> textureDocument(
createEmptyTexture(samples, token));
if (token.canceled())
return nullptr;
token.set_progress(0.6f);
Sprite* texture = textureDocument->sprite();
Image* textureImage = texture->root()->firstLayer()
->cel(frame_t(0))->image();
renderTexture(ctx, samples, textureImage, token);
if (token.canceled())
return nullptr;
token.set_progress(0.8f);
// Trim texture
if (m_trimSprite || m_trimCels)
trimTexture(samples, texture);
token.set_progress(0.9f);
// Save the metadata.
if (osbuf)
createDataFile(samples, os, texture);
token.set_progress(0.95f);
// Save the image files.
if (!m_textureFilename.empty()) {
DX_TRACE("DocExporter::exportSheet", m_textureFilename);
textureDocument->setFilename(m_textureFilename.c_str());
int ret = save_document(ctx, textureDocument.get());
if (ret == 0)
textureDocument->markAsSaved();
}
token.set_progress(1.0f);
return textureDocument.release();
}
gfx::Size DocExporter::calculateSheetSize()
{
base::task_token token;
Samples samples;
captureSamples(samples, token);
layoutSamples(samples, token);
return calculateSheetSize(samples, token);
}
void DocExporter::addDocument(
Doc* doc,
const doc::Tag* tag,
const doc::SelectedLayers* selLayers,
const doc::SelectedFrames* selFrames)
{
DX_TRACE("DocExporter::addDocument doc=", doc, "tag=", tag);
m_documents.push_back(Item(doc, tag, selLayers, selFrames));
}
int DocExporter::addDocumentSamples(
Doc* doc,
const doc::Tag* thisTag,
const bool splitLayers,
const bool splitTags,
const doc::SelectedLayers* selLayers,
const doc::SelectedFrames* selFrames)
{
DX_TRACE("DocExporter::addDocumentSamples");
std::vector<const Tag*> tags;
if (thisTag)
tags.push_back(thisTag);
else if (splitTags) {
if (selFrames) {
const Tag* oldTag = nullptr;
for (frame_t frame : *selFrames) {
const Tag* tag = doc->sprite()->tags().innerTag(frame);
if (oldTag != tag) {
oldTag = tag;
// Do not include untagged frames
if (tag)
tags.push_back(tag);
}
}
}
else {
for (const Tag* tag : doc->sprite()->tags())
tags.push_back(tag);
}
if (tags.empty())
tags.push_back(nullptr);
}
else {
tags.push_back(nullptr);
}
doc::SelectedFrames selFramesTmp;
int items = 0;
for (const Tag* tag : tags) {
const doc::SelectedFrames* thisSelFrames = nullptr;
if (selFrames) {
if (tag) {
selFramesTmp.clear();
for (frame_t frame=tag->fromFrame(); frame<=tag->toFrame(); ++frame) {
if (selFrames->contains(frame))
selFramesTmp.insert(frame);
}
thisSelFrames = &selFramesTmp;
}
else {
selFramesTmp = *selFrames;
thisSelFrames = &selFramesTmp;
}
}
else if (tag) {
ASSERT(tag);
selFramesTmp.clear();
selFramesTmp.insert(tag->fromFrame(),
tag->toFrame());
thisSelFrames = &selFramesTmp;
}
if (splitLayers) {
if (selLayers) {
for (auto layer : selLayers->toAllLayersList()) {
if (layer->isGroup()) // Ignore groups
continue;
SelectedLayers oneLayer;
oneLayer.insert(layer);
addDocument(doc, tag, &oneLayer, thisSelFrames);
++items;
}
}
else {
for (auto layer : doc->sprite()->allVisibleLayers()) {
if (layer->isGroup()) // Ignore groups
continue;
SelectedLayers oneLayer;
oneLayer.insert(layer);
addDocument(doc, tag, &oneLayer, thisSelFrames);
++items;
}
}
}
else {
addDocument(doc, tag, selLayers, thisSelFrames);
++items;
}
}
return std::max(1, items);
}
void DocExporter::captureSamples(Samples& samples,
base::task_token& token)
{
DX_TRACE("DX: Capture samples");
for (auto& item : m_documents) {
if (token.canceled())
return;
Doc* doc = item.doc;
Sprite* sprite = doc->sprite();
Layer* layer = (item.selLayers && item.selLayers->size() == 1 ?
*item.selLayers->begin(): nullptr);
const Tag* tag = item.tag;
int frames = item.frames();
DX_TRACE("DX: - Item:", doc->filename(),
"Frames:", frames,
"Layer:", layer ? layer->name(): "-",
"Tag:", tag ? tag->name(): "-");
std::string format = m_filenameFormat;
if (format.empty()) {
format = get_default_filename_format_for_sheet(
doc->filename(),
(frames > 1), // Has frames
(layer != nullptr), // Has layer
(tag != nullptr)); // Has tag
}
gfx::Rect spriteBounds = sprite->bounds();
if (m_trimSprite) {
if (m_cache.spriteId == sprite->id() &&
m_cache.spriteVer == sprite->version() &&
m_cache.trimmedByGrid == m_trimByGrid) {
spriteBounds = m_cache.trimmedBounds;
}
else {
spriteBounds = get_trimmed_bounds(sprite, m_trimByGrid);
if (spriteBounds.isEmpty())
spriteBounds = gfx::Rect(0, 0, 1, 1);
// Cache trimmed bounds so we don't have to recalculate them
// in the next iteration/preview.
m_cache.spriteId = sprite->id();
m_cache.spriteVer = sprite->version();
m_cache.trimmedByGrid = m_trimByGrid;
m_cache.trimmedBounds = spriteBounds;
}
}
frame_t outputFrame = 0;
for (frame_t frame : item.getSelectedFrames()) {
if (token.canceled())
return;
const Tag* innerTag = (tag ? tag: sprite->tags().innerTag(frame));
const Tag* outerTag = sprite->tags().outerTag(frame);
FilenameInfo fnInfo;
fnInfo
.filename(doc->filename())
.layerName(layer ? layer->name(): "")
.groupName(layer && layer->parent() != sprite->root() ? layer->parent()->name(): "")
.innerTagName(innerTag ? innerTag->name(): "")
.outerTagName(outerTag ? outerTag->name(): "")
.frame(outputFrame)
.tagFrame(innerTag ? frame - innerTag->fromFrame():
outputFrame);
++outputFrame;
std::string filename = filename_formatter(format, fnInfo);
Sample sample(
doc, sprite, item.selLayers, frame, innerTag,
filename, m_innerPadding, m_extrude);
Cel* cel = nullptr;
Cel* link = nullptr;
bool done = false;
if (layer && layer->isImage()) {
cel = layer->cel(frame);
if (cel)
link = cel->link();
}
// Re-use linked samples
if (link && m_mergeDuplicates) {
for (const Sample& other : samples) {
if (token.canceled())
return;
if (other.sprite() == sprite &&
other.layer() == layer &&
other.frame() == link->frame()) {
ASSERT(!other.isLinked());
sample.setLinked();
sample.setSharedBounds(other.sharedBounds());
done = true;
break;
}
}
// "done" variable can be false here, e.g. when we export a
// frame tag and the first linked cel is outside the tag range.
ASSERT(done || (!done && tag));
}
bool alreadyTrimmed = false;
if (!done && (m_ignoreEmptyCels || m_trimCels)) {
// Ignore empty cels
if (layer && layer->isImage() && !cel && m_ignoreEmptyCels)
continue;
ImageRef sampleRender(sample.createRender(m_sampleBuf));
gfx::Rect frameBounds;
doc::color_t refColor = 0;
if (m_trimCels) {
if ((layer &&
layer->isBackground()) ||
(!layer &&
sprite->backgroundLayer() &&
sprite->backgroundLayer()->isVisible())) {
refColor = get_pixel(sampleRender.get(), 0, 0);
}
else {
refColor = sprite->transparentColor();
}
}
else if (m_ignoreEmptyCels)
refColor = sprite->transparentColor();
if (!algorithm::shrink_bounds(sampleRender.get(), spriteBounds, frameBounds, refColor)) {
// If shrink_bounds() returns false, it's because the whole
// image is transparent (equal to the mask color).
// Should we ignore this empty frame? (i.e. don't include
// the frame in the sprite sheet)
if (m_ignoreEmptyCels) {
for (Tag* tag : sprite->tags()) {
auto& delta = m_tagDelta[tag->id()];
if (frame < tag->fromFrame()) --delta.first;
if (frame <= tag->toFrame()) --delta.second;
}
continue;
}
// Create an entry with Size(1, 1) for this completely
// trimmed frame anyway so we conserve the frame information
// (position and duration of the frame in the JSON data, and
// the relative position of the frame in frame tags).
sample.setTrimmedBounds(frameBounds = gfx::Rect(0, 0, 1, 1));
}
if (m_trimCels) {
// TODO merge this code with the code in DocApi::trimSprite()
if (m_trimByGrid) {
const gfx::Rect& gridBounds = doc->sprite()->gridBounds();
gfx::Point posTopLeft =
snap_to_grid(gridBounds,
frameBounds.origin(),
PreferSnapTo::FloorGrid);
gfx::Point posBottomRight =
snap_to_grid(gridBounds,
frameBounds.point2(),
PreferSnapTo::CeilGrid);
frameBounds = gfx::Rect(posTopLeft, posBottomRight);
}
sample.setTrimmedBounds(frameBounds);
alreadyTrimmed = true;
}
}