| author | moel.mich |
| Mon, 02 Jul 2012 21:14:40 +0000 | |
| changeset 357 | fb8dc26f65a4 |
| permissions | -rw-r--r-- |
| moel@345 | 1 |
using System; |
| moel@345 | 2 |
using System.Collections.Generic; |
| moel@345 | 3 |
using System.Text; |
| moel@345 | 4 |
using System.Drawing; |
| moel@345 | 5 |
using Aga.Controls.Properties; |
| moel@345 | 6 |
using System.Windows.Forms; |
| moel@345 | 7 |
using System.Windows.Forms.VisualStyles; |
| moel@345 | 8 |
|
| moel@345 | 9 |
namespace Aga.Controls.Tree.NodeControls |
| moel@345 | 10 |
{
|
| moel@345 | 11 |
internal class NodePlusMinus : NodeControl |
| moel@345 | 12 |
{
|
| moel@345 | 13 |
public const int ImageSize = 9; |
| moel@345 | 14 |
public const int Width = 16; |
| moel@345 | 15 |
private Bitmap _plus; |
| moel@345 | 16 |
private Bitmap _minus; |
| moel@345 | 17 |
|
| moel@345 | 18 |
private VisualStyleRenderer _openedRenderer; |
| moel@345 | 19 |
private VisualStyleRenderer OpenedRenderer |
| moel@345 | 20 |
{
|
| moel@345 | 21 |
get |
| moel@345 | 22 |
{
|
| moel@345 | 23 |
if (_openedRenderer == null) |
| moel@345 | 24 |
_openedRenderer = new VisualStyleRenderer(VisualStyleElement.TreeView.Glyph.Opened); |
| moel@345 | 25 |
return _openedRenderer; |
| moel@345 | 26 |
|
| moel@345 | 27 |
} |
| moel@345 | 28 |
} |
| moel@345 | 29 |
|
| moel@345 | 30 |
private VisualStyleRenderer _closedRenderer; |
| moel@345 | 31 |
private VisualStyleRenderer ClosedRenderer |
| moel@345 | 32 |
{
|
| moel@345 | 33 |
get |
| moel@345 | 34 |
{
|
| moel@345 | 35 |
if (_closedRenderer == null) |
| moel@345 | 36 |
_closedRenderer = new VisualStyleRenderer(VisualStyleElement.TreeView.Glyph.Closed); |
| moel@345 | 37 |
return _closedRenderer; |
| moel@345 | 38 |
} |
| moel@345 | 39 |
} |
| moel@345 | 40 |
|
| moel@345 | 41 |
public NodePlusMinus() |
| moel@345 | 42 |
{
|
| moel@345 | 43 |
_plus = Resources.plus; |
| moel@345 | 44 |
_minus = Resources.minus; |
| moel@345 | 45 |
} |
| moel@345 | 46 |
|
| moel@345 | 47 |
public override Size MeasureSize(TreeNodeAdv node, DrawContext context) |
| moel@345 | 48 |
{
|
| moel@345 | 49 |
return new Size(Width, Width); |
| moel@345 | 50 |
} |
| moel@345 | 51 |
|
| moel@345 | 52 |
public override void Draw(TreeNodeAdv node, DrawContext context) |
| moel@345 | 53 |
{
|
| moel@345 | 54 |
if (node.CanExpand) |
| moel@345 | 55 |
{
|
| moel@345 | 56 |
Rectangle r = context.Bounds; |
| moel@345 | 57 |
int dy = (int)Math.Round((float)(r.Height - ImageSize) / 2); |
| moel@345 | 58 |
if (Application.RenderWithVisualStyles) |
| moel@345 | 59 |
{
|
| moel@345 | 60 |
VisualStyleRenderer renderer; |
| moel@345 | 61 |
if (node.IsExpanded) |
| moel@345 | 62 |
renderer = OpenedRenderer; |
| moel@345 | 63 |
else |
| moel@345 | 64 |
renderer = ClosedRenderer; |
| moel@345 | 65 |
renderer.DrawBackground(context.Graphics, new Rectangle(r.X, r.Y + dy, ImageSize, ImageSize)); |
| moel@345 | 66 |
} |
| moel@345 | 67 |
else |
| moel@345 | 68 |
{
|
| moel@345 | 69 |
Image img; |
| moel@345 | 70 |
if (node.IsExpanded) |
| moel@345 | 71 |
img = _minus; |
| moel@345 | 72 |
else |
| moel@345 | 73 |
img = _plus; |
| moel@345 | 74 |
context.Graphics.DrawImageUnscaled(img, new Point(r.X, r.Y + dy)); |
| moel@345 | 75 |
} |
| moel@345 | 76 |
} |
| moel@345 | 77 |
} |
| moel@345 | 78 |
|
| moel@345 | 79 |
public override void MouseDown(TreeNodeAdvMouseEventArgs args) |
| moel@345 | 80 |
{
|
| moel@345 | 81 |
if (args.Button == MouseButtons.Left) |
| moel@345 | 82 |
{
|
| moel@345 | 83 |
args.Handled = true; |
| moel@345 | 84 |
if (args.Node.CanExpand) |
| moel@345 | 85 |
args.Node.IsExpanded = !args.Node.IsExpanded; |
| moel@345 | 86 |
} |
| moel@345 | 87 |
} |
| moel@345 | 88 |
|
| moel@345 | 89 |
public override void MouseDoubleClick(TreeNodeAdvMouseEventArgs args) |
| moel@345 | 90 |
{
|
| moel@345 | 91 |
args.Handled = true; // Supress expand/collapse when double click on plus/minus |
| moel@345 | 92 |
} |
| moel@345 | 93 |
} |
| moel@345 | 94 |
} |