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130 lines
3.6 KiB
130 lines
3.6 KiB
-- @docclass
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UIPopupScrollMenu = extends(UIWidget, "UIPopupScrollMenu")
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local currentMenu
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function UIPopupScrollMenu.create()
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local menu = UIPopupScrollMenu.internalCreate()
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local scrollArea = g_ui.createWidget('UIScrollArea', menu)
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scrollArea:setLayout(UIVerticalLayout.create(menu))
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scrollArea:setId('scrollArea')
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local scrollBar = g_ui.createWidget('VerticalScrollBar', menu)
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scrollBar:setId('scrollBar')
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scrollBar.pixelsScroll = false
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scrollBar:addAnchor(AnchorRight, 'parent', AnchorRight)
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scrollBar:addAnchor(AnchorTop, 'parent', AnchorTop)
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scrollBar:addAnchor(AnchorBottom, 'parent', AnchorBottom)
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scrollArea:addAnchor(AnchorLeft, 'parent', AnchorLeft)
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scrollArea:addAnchor(AnchorTop, 'parent', AnchorTop)
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scrollArea:addAnchor(AnchorBottom, 'parent', AnchorBottom)
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scrollArea:addAnchor(AnchorRight, 'next', AnchorLeft)
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scrollArea:setVerticalScrollBar(scrollBar)
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menu.scrollArea = scrollArea
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menu.scrollBar = scrollBar
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return menu
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end
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function UIPopupScrollMenu:setScrollbarStep(step)
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self.scrollBar:setStep(step)
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end
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function UIPopupScrollMenu:display(pos)
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-- don't display if not options was added
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if self.scrollArea:getChildCount() == 0 then
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self:destroy()
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return
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end
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if g_ui.isMouseGrabbed() then
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self:destroy()
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return
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end
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if currentMenu then
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currentMenu:destroy()
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end
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if pos == nil then
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pos = g_window.getMousePosition()
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end
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rootWidget:addChild(self)
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self:setPosition(pos)
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self:grabMouse()
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currentMenu = self
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end
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function UIPopupScrollMenu:onGeometryChange(oldRect, newRect)
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local parent = self:getParent()
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if not parent then return end
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local ymax = parent:getY() + parent:getHeight()
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local xmax = parent:getX() + parent:getWidth()
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if newRect.y + newRect.height > ymax then
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local newy = newRect.y - newRect.height
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if newy > 0 and newy + newRect.height < ymax then self:setY(newy) end
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end
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if newRect.x + newRect.width > xmax then
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local newx = newRect.x - newRect.width
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if newx > 0 and newx + newRect.width < xmax then self:setX(newx) end
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end
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self:bindRectToParent()
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end
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function UIPopupScrollMenu:addOption(optionName, optionCallback, shortcut)
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local optionWidget = g_ui.createWidget(self:getStyleName() .. 'Button', self.scrollArea)
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optionWidget.onClick = function(widget)
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self:destroy()
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optionCallback()
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end
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optionWidget:setText(optionName)
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local width = optionWidget:getTextSize().width + optionWidget:getMarginLeft() + optionWidget:getMarginRight() + 15
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if shortcut then
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local shortcutLabel = g_ui.createWidget(self:getStyleName() .. 'ShortcutLabel', optionWidget)
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shortcutLabel:setText(shortcut)
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width = width + shortcutLabel:getTextSize().width + shortcutLabel:getMarginLeft() + shortcutLabel:getMarginRight()
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end
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self:setWidth(math.max(self:getWidth(), width))
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end
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function UIPopupScrollMenu:addSeparator()
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g_ui.createWidget(self:getStyleName() .. 'Separator', self.scrollArea)
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end
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function UIPopupScrollMenu:onDestroy()
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if currentMenu == self then
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currentMenu = nil
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end
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self:ungrabMouse()
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end
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function UIPopupScrollMenu:onMousePress(mousePos, mouseButton)
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-- clicks outside menu area destroys the menu
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if not self:containsPoint(mousePos) then
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self:destroy()
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end
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return true
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end
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function UIPopupScrollMenu:onKeyPress(keyCode, keyboardModifiers)
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if keyCode == KeyEscape then
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self:destroy()
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return true
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end
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return false
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end
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-- close all menus when the window is resized
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local function onRootGeometryUpdate()
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if currentMenu then
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currentMenu:destroy()
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end
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end
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connect(rootWidget, { onGeometryChange = onRootGeometryUpdate} )
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