mirror of
https://github.com/greenshot/greenshot
synced 2025-08-21 05:53:27 -07:00
Refactoring the Pipette logic, also fixed some small issue...
git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1658 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
This commit is contained in:
RKrom
parent
1116ff8a25
commit
cce32fd6b0
4 changed files with 142 additions and 109 deletions
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@ -32,131 +32,159 @@ namespace Greenshot.Controls {
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/// This code was supplied by Hi-Coder as a patch for Greenshot
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/// Needed some modifications to be stable.
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/// </summary>
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public class Pipette : Label, IMessageFilter, IDisposable {
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private Zoomer zoomer;
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private bool dragging;
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private Cursor _cursor;
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public class Pipette : Label, IMessageFilter, IDisposable {
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private MovableShowColorForm movableShowColorForm;
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private bool dragging;
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private Cursor _cursor;
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private Bitmap _image;
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private const int VK_ESC = 27;
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private const int VK_ESC = 27;
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public event EventHandler<PipetteUsedArgs> PipetteUsed;
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public event EventHandler<PipetteUsedArgs> PipetteUsed;
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public Pipette() {
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BorderStyle = BorderStyle.FixedSingle;
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dragging = false;
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public Pipette() {
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BorderStyle = BorderStyle.FixedSingle;
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dragging = false;
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_image = (Bitmap)new System.ComponentModel.ComponentResourceManager(typeof(ColorDialog)).GetObject("pipette.Image");
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Image = _image;
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_cursor = CreateCursor((Bitmap)_image, 0, 15);
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zoomer = new Zoomer();
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Application.AddMessageFilter(this);
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}
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_cursor = CreateCursor((Bitmap)_image, 1, 14);
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movableShowColorForm = new MovableShowColorForm();
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Application.AddMessageFilter(this);
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}
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/**
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* Destructor
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*/
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/// <summary>
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/// Create a cursor from the supplied bitmap & hotspot coordinates
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/// </summary>
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/// <param name="bitmap">Bitmap to create an icon from</param>
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/// <param name="hotspotX">Hotspot X coordinate</param>
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/// <param name="hotspotY">Hotspot Y coordinate</param>
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/// <returns>Cursor</returns>
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private static Cursor CreateCursor(Bitmap bitmap, int hotspotX, int hotspotY) {
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IntPtr iconHandle = bitmap.GetHicon();
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IntPtr icon;
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IconInfo iconInfo = new IconInfo();
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User32.GetIconInfo(iconHandle, out iconInfo);
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iconInfo.xHotspot = hotspotX;
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iconInfo.yHotspot = hotspotY;
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iconInfo.fIcon = false;
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icon = User32.CreateIconIndirect(ref iconInfo);
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Cursor returnCursor = new Cursor(icon);
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//User32.DestroyIcon(icon);
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User32.DestroyIcon(iconHandle);
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return returnCursor;
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}
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/// <summary>
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/// Destructor
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/// </summary>
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~Pipette() {
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Dispose(false);
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}
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// The bulk of the clean-up code is implemented in Dispose(bool)
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/// <summary>
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/// The bulk of the clean-up code is implemented in Dispose(bool)
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/// </summary>
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public new void Dispose() {
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Dispose(true);
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}
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/**
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* This Dispose is called from the Dispose and the Destructor.
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* When disposing==true all non-managed resources should be freed too!
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*/
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/// <summary>
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/// This Dispose is called from the Dispose and the Destructor.
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/// </summary>
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/// <param name="disposing">When disposing==true all non-managed resources should be freed too!</param>
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protected override void Dispose(bool disposing) {
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base.Dispose();
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if (disposing) {
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if (_cursor != null) {
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_cursor.Dispose();
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}
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if (zoomer != null) {
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zoomer.Dispose();
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if (movableShowColorForm != null) {
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movableShowColorForm.Dispose();
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}
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}
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zoomer = null;
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movableShowColorForm = null;
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_cursor = null;
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base.Dispose();
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}
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/// <summary>
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/// Handle the mouse down on the Pipette "label", we take the capture and move the zoomer to the current location
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/// </summary>
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/// <param name="e">MouseEventArgs</param>
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protected override void OnMouseDown(MouseEventArgs e) {
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if (e.Button == MouseButtons.Left) {
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User32.SetCapture(this.Handle);
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zoomer.setHotSpot(PointToScreen(new Point(e.X, e.Y)));
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}
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base.OnMouseDown(e);
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}
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if (e.Button == MouseButtons.Left) {
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User32.SetCapture(this.Handle);
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movableShowColorForm.MoveTo(PointToScreen(new Point(e.X, e.Y)));
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}
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base.OnMouseDown(e);
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}
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protected override void OnMouseUp(MouseEventArgs e) {
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if (e.Button == MouseButtons.Left) {
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//Release Capture should consume MouseUp when canceled with the escape key
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User32.ReleaseCapture();
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PipetteUsed(this, new PipetteUsedArgs(zoomer.color));
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}
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base.OnMouseUp(e);
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}
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/// <summary>
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/// Handle the mouse up on the Pipette "label", we release the capture and fire the PipetteUsed event
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/// </summary>
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/// <param name="e">MouseEventArgs</param>
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protected override void OnMouseUp(MouseEventArgs e) {
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if (e.Button == MouseButtons.Left) {
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//Release Capture should consume MouseUp when canceled with the escape key
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User32.ReleaseCapture();
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PipetteUsed(this, new PipetteUsedArgs(movableShowColorForm.color));
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}
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base.OnMouseUp(e);
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}
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protected override void OnMouseMove(MouseEventArgs e) {
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if (dragging) {
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//display the form on the right side of the cursor by default;
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Point zp = PointToScreen(new Point(e.X, e.Y));
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zoomer.setHotSpot(zp);
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}
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base.OnMouseMove(e);
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}
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/// <summary>
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/// Handle the mouse Move event, we move the ColorUnderCursor to the current location.
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/// </summary>
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/// <param name="e">MouseEventArgs</param>
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protected override void OnMouseMove(MouseEventArgs e) {
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if (dragging) {
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//display the form on the right side of the cursor by default;
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Point zp = PointToScreen(new Point(e.X, e.Y));
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movableShowColorForm.MoveTo(zp);
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}
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base.OnMouseMove(e);
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}
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private Cursor CreateCursor(Bitmap bitmap, int x, int y) {
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IntPtr iconHandle = bitmap.GetHicon();
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IntPtr icon;
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IconInfo iconInfo = new IconInfo();
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User32.GetIconInfo(iconHandle, out iconInfo);
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iconInfo.xHotspot = 0;
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iconInfo.yHotspot = 15;
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iconInfo.fIcon = false;
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icon = User32.CreateIconIndirect(ref iconInfo);
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Cursor returnCursor = new Cursor(icon);
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//User32.DestroyIcon(icon);
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User32.DestroyIcon(iconHandle);
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return returnCursor;
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}
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protected override void OnMouseCaptureChanged(EventArgs e) {
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if (this.Capture) {
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dragging = true;
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Image = null;
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Cursor c = _cursor;
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Cursor = c;
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zoomer.Visible = true;
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} else {
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dragging = false;
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Image = _image;
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Cursor = Cursors.Arrow;
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zoomer.Visible = false;
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}
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/// <summary>
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/// Handle the MouseCaptureChanged event
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseCaptureChanged(EventArgs e) {
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if (this.Capture) {
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dragging = true;
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Image = null;
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Cursor c = _cursor;
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Cursor = c;
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movableShowColorForm.Visible = true;
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} else {
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dragging = false;
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Image = _image;
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Cursor = Cursors.Arrow;
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movableShowColorForm.Visible = false;
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}
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Update();
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base.OnMouseCaptureChanged(e);
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}
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base.OnMouseCaptureChanged(e);
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}
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#region IMessageFilter Members
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#region IMessageFilter Members
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public bool PreFilterMessage(ref Message m) {
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if (dragging) {
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public bool PreFilterMessage(ref Message m) {
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if (dragging) {
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if (m.Msg == (int)WindowsMessages.WM_CHAR) {
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if ((int)m.WParam == VK_ESC) {
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User32.ReleaseCapture();
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}
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}
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}
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return false;
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}
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}
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return false;
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}
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#endregion
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}
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#endregion
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}
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public class PipetteUsedArgs : EventArgs {
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public Color color;
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public class PipetteUsedArgs : EventArgs {
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public Color color;
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public PipetteUsedArgs(Color c) {
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color = c;
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}
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}
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public PipetteUsedArgs(Color c) {
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color = c;
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}
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}
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}
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