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54 lines
1.3 KiB
54 lines
1.3 KiB
class CanvasView < TQt::CanvasView
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def initialize(canvas, elements, parent = nil, name = "canvas view", f = 0)
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super(canvas, parent, name, f)
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@elements = elements
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@movingItem = nil
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end
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def contentsContextMenuEvent( e )
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parent().optionsMenu.exec( TQt::Cursor.pos() )
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end
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def viewportResizeEvent( e )
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canvas().resize( e.size().width(), e.size().height() )
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parent().drawElements()
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end
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def contentsMousePressEvent( e )
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list = canvas().collisions( e.pos() )
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list.each do |it|
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if it.rtti() == CanvasText::CANVAS_TEXT
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@movingItem = it
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@pos = e.pos()
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return
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end
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end
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@movingItem = nil
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end
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def contentsMouseMoveEvent( e )
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if @movingItem
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offset = e.pos() - @pos
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@movingItem.moveBy( offset.x(), offset.y() )
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@pos = e.pos()
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form = parent()
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form.changed = true
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chartType = form.chartType()
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item = @movingItem
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i = item.index()
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@elements[i].setProX( chartType, item.x() / canvas().width() )
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@elements[i].setProY( chartType, item.y() / canvas().height() )
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canvas().update()
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end
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end
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end
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