示例#1
0
文件: icons.go 项目: nelsam/vidar
func createIconButton(driver gxui.Driver, theme gxui.Theme, iconPath string) gxui.Button {
	button := theme.CreateButton()
	button.SetType(gxui.PushButton)

	fileBytes, err := assets.Asset(iconPath)
	if err != nil {
		log.Printf("Error: Failed to read asset %s: %s", iconPath, err)
		return button
	}
	f := bytes.NewBuffer(fileBytes)
	src, _, err := image.Decode(f)
	if err != nil {
		log.Printf("Error: Failed to decode image %s: %s", iconPath, err)
		return button
	}
	src = resize.Resize(24, 24, src, resize.Bilinear)

	rgba := image.NewRGBA(src.Bounds())
	draw.Draw(rgba, src.Bounds(), src, image.ZP, draw.Src)
	texture := driver.CreateTexture(rgba, 1)

	icon := theme.CreateImage()
	icon.SetTexture(texture)
	button.AddChild(icon)
	return button
}
示例#2
0
文件: tree.go 项目: nelsam/gxui
func (defaultTreeControlCreator) Create(theme gxui.Theme, control gxui.Control, node *TreeToListNode) gxui.Control {
	ll := theme.CreateLinearLayout()
	ll.SetDirection(gxui.LeftToRight)

	btn := theme.CreateButton()
	btn.SetBackgroundBrush(gxui.TransparentBrush)
	btn.SetBorderPen(gxui.CreatePen(1, gxui.Gray30))
	btn.SetMargin(math.Spacing{L: 2, R: 2, T: 1, B: 1})
	btn.OnClick(func(ev gxui.MouseEvent) {
		if ev.Button == gxui.MouseButtonLeft {
			node.ToggleExpanded()
		}
	})

	update := func() {
		btn.SetVisible(!node.IsLeaf())
		if node.IsExpanded() {
			btn.SetText("-")
		} else {
			btn.SetText("+")
		}
	}
	update()

	gxui.WhileAttached(btn, node.OnChange, update)

	ll.AddChild(btn)
	ll.AddChild(control)
	ll.SetPadding(math.Spacing{L: 16 * node.Depth()})
	return ll
}
示例#3
0
文件: tree.go 项目: nelsam/gxui
func (treeControlCreator) Create(theme gxui.Theme, control gxui.Control, node *mixins.TreeToListNode) gxui.Control {
	img := theme.CreateImage()
	imgSize := math.Size{W: 10, H: 10}

	ll := theme.CreateLinearLayout()
	ll.SetDirection(gxui.LeftToRight)

	btn := theme.CreateButton()
	btn.SetBackgroundBrush(gxui.TransparentBrush)
	btn.SetBorderPen(gxui.CreatePen(1, gxui.Gray30))
	btn.SetMargin(math.Spacing{L: 1, R: 1, T: 1, B: 1})
	btn.OnClick(func(ev gxui.MouseEvent) {
		if ev.Button == gxui.MouseButtonLeft {
			node.ToggleExpanded()
		}
	})
	btn.AddChild(img)

	update := func() {
		expanded := node.IsExpanded()
		canvas := theme.Driver().CreateCanvas(imgSize)
		btn.SetVisible(!node.IsLeaf())
		switch {
		case !btn.IsMouseDown(gxui.MouseButtonLeft) && expanded:
			canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
		case !btn.IsMouseDown(gxui.MouseButtonLeft) && !expanded:
			canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray70))
		case expanded:
			canvas.DrawPolygon(expandedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
		case !expanded:
			canvas.DrawPolygon(collapsedPoly, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray30))
		}
		canvas.Complete()
		img.SetCanvas(canvas)
	}
	btn.OnMouseDown(func(gxui.MouseEvent) { update() })
	btn.OnMouseUp(func(gxui.MouseEvent) { update() })
	update()

	gxui.WhileAttached(btn, node.OnChange, update)

	ll.AddChild(btn)
	ll.AddChild(control)
	ll.SetPadding(math.Spacing{L: 16 * node.Depth()})
	return ll
}
示例#4
0
文件: main.go 项目: nelsam/gxui
// Create implements gxui.TreeNode.
func (n *node) Create(theme gxui.Theme) gxui.Control {
	layout := theme.CreateLinearLayout()
	layout.SetDirection(gxui.LeftToRight)

	label := theme.CreateLabel()
	label.SetText(n.name)

	textbox := theme.CreateTextBox()
	textbox.SetText(n.name)
	textbox.SetPadding(math.ZeroSpacing)
	textbox.SetMargin(math.ZeroSpacing)

	addButton := theme.CreateButton()
	addButton.SetText("+")
	addButton.OnClick(func(gxui.MouseEvent) { n.add("<new>") })

	edit := func() {
		layout.RemoveAll()
		layout.AddChild(textbox)
		layout.AddChild(addButton)
		gxui.SetFocus(textbox)
	}

	commit := func() {
		n.name = textbox.Text()
		label.SetText(n.name)
		layout.RemoveAll()
		layout.AddChild(label)
		layout.AddChild(addButton)
	}

	// When the user clicks the label, replace it with an editable text-box
	label.OnClick(func(gxui.MouseEvent) { edit() })

	// When the text-box loses focus, replace it with a label again.
	textbox.OnLostFocus(commit)

	layout.AddChild(label)
	layout.AddChild(addButton)
	return layout
}