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110 lines
5.1 KiB
110 lines
5.1 KiB
1 year ago
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#!/usr/bin/env python3
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# MIT License
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#
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# Copyright (c) 2025 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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# Those 2 lines are required to use the TermTk library in the main folder
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import sys, os
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sys.path.append(os.path.join(sys.path[0],'../../..'))
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import TermTk as ttk
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# This example show more advance Drag and Drop pixmap usage;
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#
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# When the Drag and Drop operation is started, a TTkLabel widget is created
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# but a new canvas is built to be used as pixmap.
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# This approach increase the flexibility on the styling of the full drag and drop operation
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class DragDrop(ttk.TTkFrame):
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def mouseDragEvent(self, evt:ttk. TTkMouseEvent) -> bool:
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# Create a new drag object, a new TTkLabel as DnD Data and
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# a custom Pixmap drawn as a titled box of fixed sizes around
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# a snippet of the label's text
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label = ttk.TTkLabel(text="Lorem ipsum dolor sit amet,\nconsectetur adipiscing elit,\nsed do eiusmod tempor incididunt ut\nlabore et dolore magna aliqua.", size=(10,1))
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pixmap = ttk.TTkCanvas(width=17,height=5)
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pixmap.drawText(pos=(0,0),text="╭───────────────╮")
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pixmap.drawText(pos=(2,0),text=f"╼ {self.title()} ╾") # Here for simplicity I am writing the title over the top border
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pixmap.drawText(pos=(0,1),text="│Lorem ipsum dol│")
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pixmap.drawText(pos=(0,2),text="│consectetur adi│")
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pixmap.drawText(pos=(0,3),text="│sed do eiusmod │")
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pixmap.drawText(pos=(0,4),text="╰───────────────╯")
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# The next condition is meant to show that you can
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# handle also the Drag and Drop with the Right or Middle mouse buttons.
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if evt.key == ttk. TTkMouseEvent.LeftButton:
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pixmap.drawText(pos=(0,4),text="╰───────╼ Left ╾╯")
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elif evt.key == ttk. TTkMouseEvent.RightButton:
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pixmap.drawText(pos=(0,4),text="╰──────╼ Right ╾╯")
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elif evt.key == ttk. TTkMouseEvent.MidButton:
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pixmap.drawText(pos=(0,4),text="╰────╼ Eugenio ╾╯")
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drag = ttk.TTkDrag()
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drag.setData(label)
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drag.setPixmap(pixmap)
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ttk.TTkLog.debug(f"Drag ({self.title()}) -> pos={evt.x},{evt.y}")
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# Start the drag operation
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drag.exec()
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return True
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def dropEvent(self, evt:ttk.TTkDnDEvent) -> bool:
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# Similar to the previous example
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# I am retrieving the TTkLabel widget used as Drag'nDrop data
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# and I am placing it inside the current Frame
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# This time I am not removing the padding sizes from the
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# position due to the frame I draw in the pixmap that
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# already changed the offset of the text being aligned to the final
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# dropped Label position.
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# BTW, I am not a genious that can figure out all of this upfront,
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# this is just the result of trial and errors
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label:ttk.TTkLabel = evt.data()
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self.layout().addWidget(label)
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label.move(evt.x, evt.y)
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ttk.TTkLog.debug(f"Drop ({self.title()}) <- pos={evt.x},{evt.y}")
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return True
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# Create the root application
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# and set its layout to TTkGridLayout in order to
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# place the widgets in the following way:
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#
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# Col 0 Col 1
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# +----------------+----------------+
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# Row 0 | DragDrop 1 | DragDrop 2 |
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# + +----------------+
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# Row 1 | | DragDrop 3 |
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# +----------------+----------------+
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# Row 2 | Log Viewer |
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# +----------------+----------------+
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#
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root = ttk.TTk()
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root.setLayout(ttk.TTkGridLayout())
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# Add the DragDrop widgets to the root layout
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root.layout().addWidget(DragDrop(title="DnD 1"),0,0,2,1)
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root.layout().addWidget(DragDrop(title="DnD 2"),0,1,1,1)
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root.layout().addWidget(DragDrop(title="DnD 3"),1,1,1,1)
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# Add a LogViewer at the bottom to display the log messages
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# (Row 2, Col 0, RowSpan 1, ColSpan 2)
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root.layout().addWidget(ttk.TTkLogViewer(follow=True),2,0,1,2)
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root.mainloop()
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