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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -28,6 +28,7 @@ | |
| MENU_SEPARATOR, | ||
| 'save', | ||
| 'save_as', | ||
| 'export_scene', | ||
| MENU_SEPARATOR, | ||
| 'quit', | ||
| ], | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| # This file is part of BeeRef. | ||
| # | ||
| # BeeRef is free software: you can redistribute it and/or modify | ||
| # it under the terms of the GNU General Public License as published by | ||
| # the Free Software Foundation, either version 3 of the License, or | ||
| # (at your option) any later version. | ||
| # | ||
| # BeeRef is distributed in the hope that it will be useful, | ||
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| # GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License | ||
| # along with BeeRef. If not, see <https://www.gnu.org/licenses/>. | ||
|
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| import logging | ||
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| from PyQt6 import QtCore, QtGui | ||
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| from .errors import BeeFileIOError | ||
| from beeref import constants | ||
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| logger = logging.getLogger(__name__) | ||
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| class SceneToPixmapExporter: | ||
| """For exporting the scene to a single image.""" | ||
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| MARGIN = 100 | ||
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| def __init__(self, scene): | ||
| self.scene = scene | ||
| self.scene.cancel_crop_mode() | ||
| self.scene.set_selected_all_items(False) | ||
| # Selection outlines/handles will be rendered to the exported | ||
| # image, and they also influence the size of the sceneRect. | ||
| # So deselect first. | ||
| size = self.scene.sceneRect().size() | ||
| if isinstance(size, QtCore.QSizeF): | ||
| size = size.toSize() | ||
| self.margin = max(size.width(), size.height()) * 0.03 | ||
| self.default_size = size.grownBy( | ||
| QtCore.QMargins(*([int(self.margin)] * 4))) | ||
| logger.debug(f'Default export size: {self.default_size}') | ||
| logger.debug(f'Default export margin: {self.margin}') | ||
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| def render_to_image(self, size): | ||
| logger.debug(f'Final export size: {size}') | ||
| margin = self.margin * size.width() / self.default_size.width() | ||
| logger.debug(f'Final export margin: {margin}') | ||
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| image = QtGui.QImage(size, QtGui.QImage.Format.Format_RGB32) | ||
| image.fill(QtGui.QColor(*constants.COLORS['Scene:Canvas'])) | ||
| painter = QtGui.QPainter(image) | ||
| painter.setViewport(QtCore.QRect( | ||
| int(margin), | ||
| int(margin), | ||
| int(size.width() - 2 * margin), | ||
| int(size.height() - 2 * margin))) | ||
| self.scene.render(painter) | ||
| painter.end() | ||
| return image | ||
|
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| def export(self, filename, size): | ||
| logger.debug(f'Exporting scene to {filename}') | ||
| image = self.render_to_image(size) | ||
| if not image.save(filename): | ||
| raise BeeFileIOError( | ||
| msg=str('Error writing image'), filename=filename) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| import os | ||
| import stat | ||
| from unittest.mock import patch | ||
| import pytest | ||
|
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| from PyQt6 import QtGui, QtCore | ||
|
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| from beeref import constants | ||
| from beeref.items import BeePixmapItem | ||
| from beeref.fileio.errors import BeeFileIOError | ||
| from beeref.fileio.export import SceneToPixmapExporter | ||
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| def test_scene_to_pixmap_exporter_default_size_and_margin(view): | ||
| item1 = BeePixmapItem( | ||
| QtGui.QImage(100, 100, QtGui.QImage.Format.Format_RGB32)) | ||
| item1.setPos(QtCore.QPointF(0, 0)) | ||
| view.scene.addItem(item1) | ||
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| item2 = BeePixmapItem( | ||
| QtGui.QImage(100, 100, QtGui.QImage.Format.Format_RGB32)) | ||
| item1.setPos(QtCore.QPointF(200, 0)) | ||
| view.scene.addItem(item2) | ||
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| exporter = SceneToPixmapExporter(view.scene) | ||
| assert view.scene.sceneRect().size().toSize() == QtCore.QSize(300, 100) | ||
| assert (exporter.margin - 9) < 0.000001 | ||
| assert exporter.default_size == QtCore.QSize(318, 118) | ||
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| def test_scene_to_pixmap_exporter_default_size_and_margin_when_selection(view): | ||
| item1 = BeePixmapItem( | ||
| QtGui.QImage(100, 100, QtGui.QImage.Format.Format_RGB32)) | ||
| item1.setPos(QtCore.QPointF(0, 0)) | ||
| view.scene.addItem(item1) | ||
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| item2 = BeePixmapItem( | ||
| QtGui.QImage(100, 100, QtGui.QImage.Format.Format_RGB32)) | ||
| item1.setPos(QtCore.QPointF(200, 0)) | ||
| view.scene.addItem(item2) | ||
| item2.setSelected(True) | ||
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| exporter = SceneToPixmapExporter(view.scene) | ||
| assert view.scene.sceneRect().size().toSize() == QtCore.QSize(300, 100) | ||
| assert (exporter.margin - 9) < 0.000001 | ||
| assert exporter.default_size == QtCore.QSize(318, 118) | ||
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| @patch('PyQt6.QtGui.QPainter.setViewport') | ||
| def test_scene_to_pixmap_exporter_render_sets_margins(set_mock, view): | ||
| item = BeePixmapItem( | ||
| QtGui.QImage(1000, 1200, QtGui.QImage.Format.Format_RGB32)) | ||
| view.scene.addItem(item) | ||
| exporter = SceneToPixmapExporter(view.scene) | ||
| assert exporter.margin == 36 | ||
| assert exporter.default_size == QtCore.QSize(1072, 1272) | ||
| exporter.render_to_image(QtCore.QSize(536, 636)) | ||
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| set_mock.assert_called_once_with( | ||
| QtCore.QRect(18, 18, 500, 600)) | ||
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| def test_scene_to_pixmap_exporter_render_renders_scene(view): | ||
| item_img = QtGui.QImage(1000, 1200, QtGui.QImage.Format.Format_RGB32) | ||
| item_img.fill(QtGui.QColor(11, 22, 33)) | ||
| item = BeePixmapItem(item_img) | ||
| view.scene.addItem(item) | ||
| exporter = SceneToPixmapExporter(view.scene) | ||
| assert exporter.margin == 36 | ||
| assert exporter.default_size == QtCore.QSize(1072, 1272) | ||
| image = exporter.render_to_image(QtCore.QSize(536, 636)) | ||
| assert image.pixel(1, 1) == QtGui.QColor(*constants.COLORS['Scene:Canvas']) | ||
| assert image.pixel(100, 100) == QtGui.QColor(11, 22, 33) | ||
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| def test_scene_to_pixmap_export_writes_image(view, tmpdir): | ||
| filename = os.path.join(tmpdir, 'foo.png') | ||
| item_img = QtGui.QImage(1000, 1200, QtGui.QImage.Format.Format_RGB32) | ||
| item = BeePixmapItem(item_img) | ||
| view.scene.addItem(item) | ||
| exporter = SceneToPixmapExporter(view.scene) | ||
| exporter.export(filename, QtCore.QSize(100, 120)) | ||
|
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| with open(filename, 'rb') as f: | ||
| assert f.read().startswith(b'\x89PNG') | ||
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| def test_scene_to_pixmap_export_when_file_not_writeable(view, tmpdir): | ||
| filename = os.path.join(tmpdir, 'foo.png') | ||
| with open(filename, 'w') as f: | ||
| f.write('foo') | ||
| os.chmod(filename, stat.S_IREAD) | ||
| item_img = QtGui.QImage(1000, 1200, QtGui.QImage.Format.Format_RGB32) | ||
| item = BeePixmapItem(item_img) | ||
| view.scene.addItem(item) | ||
| exporter = SceneToPixmapExporter(view.scene) | ||
|
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| with pytest.raises(BeeFileIOError) as e: | ||
| exporter.export(filename, QtCore.QSize(100, 120)) | ||
| assert e.filename == filename |
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