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Code Releases Wiki Activity

Add mostly working ScrollArea imge viewers

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* Work around flickering of scrollbars due to
GridLayout resizing on odd pixels by disabling
the scrollbars while BestFit is active
* Also setting minimum column width to work around
the issue above.
* Avoid updating scrollbar values twice by using a
simple boolean lock
This commit is contained in:
glubsy 2020-06-21 01:49:17 +02:00
parent a706d0ebe5
commit 970bb5e19d
2 changed files with 375 additions and 341 deletions
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65
qt/pe/details_dialog.py
View File

@ -6,9 +6,9 @@
from PyQt5.QtCore import Qt, QSize, pyqtSlot, pyqtSignal
from PyQt5.QtGui import QPixmap, QIcon, QKeySequence
from PyQt5.QtWidgets import (QVBoxLayout, QAbstractItemView, QHBoxLayout,
from PyQt5.QtWidgets import (QLayout, QVBoxLayout, QAbstractItemView, QHBoxLayout,
QLabel, QSizePolicy, QToolBar, QToolButton, QGridLayout, QStyle, QAction,
QWidget, QApplication )
QWidget, QApplication, QSpacerItem )
from hscommon.trans import trget
from hscommon import desktop
@ -29,26 +29,18 @@ class DetailsDialog(DetailsDialogBase):
def setupActions(self):
# (name, shortcut, icon, desc, func)
ACTIONS = [
(
# FIXME probably not used right now
"actionSwap",
QKeySequence.Backspace,
"view-refresh",
tr("Swap images"),
self.swapImages,
),
(
"actionZoomIn",
QKeySequence.ZoomIn,
"zoom-in",
tr("Increase zoom factor"),
tr("Increase zoom"),
self.zoomIn,
),
(
"actionZoomOut",
QKeySequence.ZoomOut,
"zoom-out",
tr("Decrease zoom factor"),
tr("Decrease zoom"),
self.zoomOut,
),
(
@ -78,14 +70,15 @@ class DetailsDialog(DetailsDialogBase):
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
# self.horizontalLayout = QHBoxLayout()
self.horizontalLayout = QGridLayout()
# Minimum width for the toolbar in the middle:
self.horizontalLayout.setColumnMinimumWidth(1, 30)
self.horizontalLayout.setColumnStretch(0,1)
self.horizontalLayout.setColumnStretch(1,0)
self.horizontalLayout.setColumnStretch(2,1)
self.horizontalLayout.setSpacing(4)
# self.horizontalLayout.setColumnStretch(3,0)
self.horizontalLayout.setSpacing(2)
self.selectedImageViewer = ScrollAreaImageViewer(
self, "selectedImage")
self.selectedImageViewer = ScrollAreaImageViewer(self, "selectedImage")
# self.selectedImage = QLabel(self)
# sizePolicy = QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)
# sizePolicy.setHorizontalStretch(0)
@ -99,8 +92,11 @@ class DetailsDialog(DetailsDialogBase):
# # self.horizontalLayout.addWidget(self.selectedImage)
self.horizontalLayout.addWidget(self.selectedImageViewer, 0, 0, 3, 1)
# self.horizontalLayout.addItem(QSpacerItem(5,0, QSizePolicy.Minimum),
# 1, 3, 1, 1, Qt.Alignment(Qt.AlignRight))
self.verticalToolBar = QToolBar(self)
self.verticalToolBar.setOrientation(Qt.Orientation(2))
self.verticalToolBar.setOrientation(Qt.Orientation(Qt.Vertical))
# self.subVLayout = QVBoxLayout(self)
# self.subVLayout.addWidget(self.verticalToolBar)
# self.horizontalLayout.addLayout(self.subVLayout)
@ -150,8 +146,7 @@ class DetailsDialog(DetailsDialogBase):
self.horizontalLayout.addWidget(self.verticalToolBar, 1, 1, 1, 1, Qt.AlignCenter)
# self.horizontalLayout.addWidget(self.verticalToolBar, Qt.AlignVCenter)
self.referenceImageViewer = ScrollAreaImageViewer(
self, "referenceImage")
self.referenceImageViewer = ScrollAreaImageViewer(self, "referenceImage")
# self.referenceImage = QLabel(self)
# sizePolicy = QSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)
# sizePolicy.setHorizontalStretch(0)
@ -159,11 +154,12 @@ class DetailsDialog(DetailsDialogBase):
# sizePolicy.setHeightForWidth(
# self.referenceImage.sizePolicy().hasHeightForWidth()
# )
# self.referenceImage.setSizePolicy(sizePolicy)
# self.referenceImage.setAlignment(Qt.AlignCenter)
# self.referenceImageViewer.setSizePolicy(sizePolicy)
# self.referenceImageViewer.setAlignment(Qt.AlignCenter)
self.horizontalLayout.addWidget(self.referenceImageViewer, 0, 2, 3, 1)
# self.horizontalLayout.addWidget(self.referenceImage)
# self.horizontalLayout.addWidget(self.referenceImageViewer)
self.verticalLayout.addLayout(self.horizontalLayout)
self.tableView = DetailsTable(self)
sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
@ -176,6 +172,7 @@ class DetailsDialog(DetailsDialogBase):
self.tableView.setSelectionBehavior(QAbstractItemView.SelectRows)
self.tableView.setShowGrid(False)
self.verticalLayout.addWidget(self.tableView)
self.tableView.hide()
self.buttonImgSwap.setEnabled(False)
self.buttonZoomIn.setEnabled(False)
@ -215,17 +212,21 @@ class DetailsDialog(DetailsDialogBase):
return
self.vController.update(ref, dupe)
def _updateImages(self):
if not self.vController.bestFit:
return
self.vController._updateImages()
# --- Override
def resizeEvent(self, event):
if self.vController is None:
# HACK referenceViewer might be 1 pixel shorter in width
# due to dynamic resizing in the GridLayout's engine
# Couldn't find a way to ensure both viewers have the exact same size
# at all time without using resize().
self.horizontalLayout.setColumnMinimumWidth(
0, self.selectedImageViewer.size().width())
self.horizontalLayout.setColumnMinimumWidth(
2, self.selectedImageViewer.size().width())
if self.vController is None or not self.vController.bestFit:
return
# update scaled down pixmaps
self._updateImages()
# Only update the scaled down pixmaps
self.vController._updateImages()
def show(self):
DetailsDialogBase.show(self)
@ -246,15 +247,15 @@ class DetailsDialog(DetailsDialogBase):
@pyqtSlot()
def zoomIn(self):
self.vController.zoom_in()
self.vController.scaleImagesBy(1.25)
@pyqtSlot()
def zoomOut(self):
self.vController.zoom_out()
self.vController.scaleImagesBy(0.8)
@pyqtSlot()
def zoomBestFit(self):
self.vController.scale_to_bestfit()
self.vController.ScaleToBestFit()
@pyqtSlot()
def zoomNormalSize(self):

635
qt/pe/image_viewer.py
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