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from PIL.ImageQt import ImageQt
from PyQt5 import QtCore
from PyQt5.QtCore import QSize, Qt, QUrl
from PyQt5.QtGui import (
QDesktopServices,
QPixmap,
)
from PyQt5.QtWidgets import (
QApplication,
QHBoxLayout,
QLabel,
QPushButton,
QSizePolicy,
QTextEdit,
QToolButton,
QVBoxLayout,
QWidget,
)
from app_settings import AppSettings
from constants import DEVICE
from frontend.gui.image_generator_worker import ImageGeneratorWorker
class ImageLabel(QLabel):
"""Defines a simple QLabel widget"""
changed = QtCore.pyqtSignal()
def __init__(self, text: str):
super().__init__(text)
self.setAlignment(Qt.AlignCenter)
self.resize(512, 512)
self.setSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding)
self.sizeHint = QSize(512, 512)
self.setAcceptDrops(False)
def show_image(self, pixmap: QPixmap = None):
"""Updates the widget pixamp"""
if pixmap == None or pixmap.isNull():
return
self.current_pixmap = pixmap
self.changed.emit()
# Resize the pixmap to the widget dimensions
image_width = self.current_pixmap.width()
image_height = self.current_pixmap.height()
if image_width > 512 or image_height > 512:
new_width = 512 if image_width > 512 else image_width
new_height = 512 if image_height > 512 else image_height
self.setPixmap(
self.current_pixmap.scaled(
new_width,
new_height,
Qt.KeepAspectRatio,
)
)
else:
self.setPixmap(self.current_pixmap)
class BaseWidget(QWidget):
def __init__(self, config: AppSettings, parent):
super().__init__()
self.config = config
self.gen_images = []
self.image_index = 0
self.config = config
self.parent = parent
# Initialize GUI widgets
self.prev_btn = QToolButton()
self.prev_btn.setText("<")
self.prev_btn.clicked.connect(self.on_show_previous_image)
self.img = ImageLabel("<<Image>>")
self.next_btn = QToolButton()
self.next_btn.setText(">")
self.next_btn.clicked.connect(self.on_show_next_image)
self.prompt = QTextEdit()
self.prompt.setPlaceholderText("A fantasy landscape")
self.prompt.setAcceptRichText(False)
self.prompt.setFixedHeight(40)
self.neg_prompt = QTextEdit()
self.neg_prompt.setPlaceholderText("")
self.neg_prompt.setAcceptRichText(False)
self.neg_prompt_label = QLabel("Negative prompt (Set guidance scale > 1.0):")
self.neg_prompt.setFixedHeight(35)
self.neg_prompt.setEnabled(False)
self.generate = QPushButton("Generate")
self.generate.clicked.connect(self.generate_click)
self.browse_results = QPushButton("...")
self.browse_results.setFixedWidth(30)
self.browse_results.clicked.connect(self.on_open_results_folder)
self.browse_results.setToolTip("Open output folder")
# Create the image navigation layout
ilayout = QHBoxLayout()
ilayout.addWidget(self.prev_btn)
ilayout.addWidget(self.img)
ilayout.addWidget(self.next_btn)
# Create the generate button layout
hlayout = QHBoxLayout()
hlayout.addWidget(self.neg_prompt)
hlayout.addWidget(self.generate)
hlayout.addWidget(self.browse_results)
# Create the actual widget layout
vlayout = QVBoxLayout()
vlayout.addLayout(ilayout)
# vlayout.addItem(self.vspacer)
vlayout.addWidget(self.prompt)
vlayout.addWidget(self.neg_prompt_label)
vlayout.addLayout(hlayout)
self.setLayout(vlayout)
self.parent.settings_changed.connect(self.on_settings_changed)
def generate_image(self):
self.parent.prepare_generation_settings(self.config)
self.config.settings.lcm_diffusion_setting.prompt = self.prompt.toPlainText()
self.config.settings.lcm_diffusion_setting.negative_prompt = (
self.neg_prompt.toPlainText()
)
images = self.parent.context.generate_text_to_image(
self.config.settings,
self.config.reshape_required,
DEVICE,
)
self.parent.context.save_images(
images,
self.config.settings,
)
self.prepare_images(images)
self.after_generation()
def prepare_images(self, images):
"""Prepares the generated images to be displayed in the Qt widget"""
self.image_index = 0
self.gen_images = []
for img in images:
im = ImageQt(img).copy()
pixmap = QPixmap.fromImage(im)
self.gen_images.append(pixmap)
if len(self.gen_images) > 1:
self.next_btn.setEnabled(True)
self.prev_btn.setEnabled(False)
else:
self.next_btn.setEnabled(False)
self.prev_btn.setEnabled(False)
self.img.show_image(pixmap=self.gen_images[0])
def on_show_next_image(self):
if self.image_index != len(self.gen_images) - 1 and len(self.gen_images) > 0:
self.prev_btn.setEnabled(True)
self.image_index += 1
self.img.show_image(pixmap=self.gen_images[self.image_index])
if self.image_index == len(self.gen_images) - 1:
self.next_btn.setEnabled(False)
def on_show_previous_image(self):
if self.image_index != 0:
self.next_btn.setEnabled(True)
self.image_index -= 1
self.img.show_image(pixmap=self.gen_images[self.image_index])
if self.image_index == 0:
self.prev_btn.setEnabled(False)
def on_open_results_folder(self):
QDesktopServices.openUrl(
QUrl.fromLocalFile(self.config.settings.generated_images.path)
)
def generate_click(self):
self.img.setText("Please wait...")
self.before_generation()
worker = ImageGeneratorWorker(self.generate_image)
self.parent.threadpool.start(worker)
def before_generation(self):
"""Call this function before running a generation task"""
self.img.setEnabled(False)
self.generate.setEnabled(False)
self.browse_results.setEnabled(False)
def after_generation(self):
"""Call this function after running a generation task"""
self.img.setEnabled(True)
self.generate.setEnabled(True)
self.browse_results.setEnabled(True)
self.parent.store_dimension_settings()
def on_settings_changed(self):
self.neg_prompt.setEnabled(
self.config.settings.lcm_diffusion_setting.use_openvino
or self.config.settings.lcm_diffusion_setting.use_lcm_lora
)
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