public void Step1_SetControl(Control control)
{
m_control = control;
var form = m_control.FindForm();
form.KeyDown += delegate(object sender, KeyEventArgs e) {
if (e.KeyCode == Keys.ShiftKey)
{
m_shiftDown = true;
}
if (e.KeyCode == Keys.ControlKey)
{
m_ctrlDown = true;
}
};
form.KeyUp += delegate(object sender, KeyEventArgs e) {
if (e.KeyCode == Keys.ShiftKey)
{
m_shiftDown = false;
}
if (e.KeyCode == Keys.Control)
{
m_ctrlDown = false;
}
};
m_control.MouseDown += delegate(object o, MouseEventArgs args) {
// Change keyboard modifier state.
var shift = m_shiftDown;
var ctrl = m_ctrlDown;
if (shift) {
m_modifierState |= MouseToolAction.ModifierKey.Shift;
}
if (ctrl) {
m_modifierState |= MouseToolAction.ModifierKey.Control;
}
// Change mouse button state.
var button = args.Button;
switch (button) {
case MouseButtons.Left: m_mouseState |= MouseToolAction.MouseButton.Left; break;
case MouseButtons.Middle: m_mouseState |= MouseToolAction.MouseButton.Middle; break;
case MouseButtons.Right: m_mouseState |= MouseToolAction.MouseButton.Right; break;
}
var viewTransform = this.CurrentViewToControlMatrix;
m_mouseDownViewTransform = viewTransform;
// Set mouse down locations.
float px = args.X;
float py = args.Y;
this.m_mouseDownControlPosition = new PointD (px, py);
var inv = viewTransform.Clone () as Matrix;
inv.Invert ();
var ps = new PointF[]{new PointF(px, py)};
inv.TransformPoints(ps);
px = ps[0].X;
py = ps[0].Y;
this.m_mouseDownViewPosition = new PointD (px, py);
// If pressing a mouse button, complete the previous mouse tool action.
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseUp != null) {
this.m_currentMouseToolAction.MouseUp (px, py);
}
}
// Find the mouse tool action that matches the current state.
m_currentMouseToolAction = null;
foreach (var mouseToolAction in m_mouseToolActions) {
if (mouseToolAction.Button == m_mouseState &&
mouseToolAction.Modifier == m_modifierState) {
this.m_currentMouseToolAction = mouseToolAction;
if (this.m_currentMouseToolAction.MouseDown != null) {
this.m_currentMouseToolAction.MouseDown (px, py);
}
return;
}
}
};
m_control.MouseUp += delegate(object o, MouseEventArgs args) {
// Change keyboard modifier state.
var shift = m_shiftDown;
var ctrl = m_ctrlDown;
if (shift) {
m_modifierState &= ~MouseToolAction.ModifierKey.Shift;
}
if (ctrl) {
m_modifierState &= ~MouseToolAction.ModifierKey.Control;
}
// Change mouse button state.
var button = args.Button;
switch (button) {
case MouseButtons.Left: m_mouseState &= ~MouseToolAction.MouseButton.Left; break;
case MouseButtons.Middle: m_mouseState &= ~MouseToolAction.MouseButton.Middle; break;
case MouseButtons.Right: m_mouseState &= ~MouseToolAction.MouseButton.Right; break;
}
m_mouseDownViewTransform = this.CurrentViewToControlMatrix;
float px = args.X;
float py = args.Y;
var inv = this.m_mouseDownViewTransform.Clone () as Matrix;
inv.Invert ();
var ps = new PointF[]{new PointF(px, py)};
inv.TransformPoints(ps);
px = ps[0].X;
py = ps[0].Y;
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseUp != null) {
this.m_currentMouseToolAction.MouseUp (px, py);
}
}
this.m_currentMouseToolAction = null;
};
m_control.MouseMove += delegate(object o, MouseEventArgs args) {
if (ReferenceEquals (this.m_mouseDownViewTransform, null)) {return;}
float px = args.X;
float py = args.Y;
var inv = this.m_mouseDownViewTransform.Clone () as Matrix;
inv.Invert ();
var ps = new PointF[]{new PointF(px, py)};
inv.TransformPoints (ps);
px = ps[0].X;
py = ps[0].Y;
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseMove != null) {
this.m_currentMouseToolAction.MouseMove (px, py);
}
}
};
}
public void Step3_SetMouseToolActions(MouseToolAction[] mouseToolActions)
{
m_mouseToolActions = mouseToolActions;
}
public void Step1_SetControl(Widget control)
{
m_control = control;
m_control.ExposeEvent += (o, args) => {
using (var context = Gdk.CairoHelper.Create (args.Event.Window)) {
CairoFillModule.Fill(context, m_control, new Cairo.Color(1, 1, 1));
context.Antialias = Cairo.Antialias.Subpixel;
context.Save ();
context.Transform (this.CurrentViewTransform);
if (m_renderDelegate != null) {
m_renderDelegate (context);
}
context.Restore ();
CairoCanvasViewModule.Draw (context,
this.CurrentControlBounds,
this.CurrentView);
}
};
m_control.ButtonPressEvent += delegate(object o, Gtk.ButtonPressEventArgs args) {
// Change keyboard modifier state.
var shift = (args.Event.State & ModifierType.ShiftMask) == ModifierType.ShiftMask;
var ctrl = (args.Event.State & ModifierType.ControlMask) == ModifierType.ControlMask;
if (shift) {
m_modifierState |= MouseToolAction.ModifierKey.Shift;
}
if (ctrl) {
m_modifierState |= MouseToolAction.ModifierKey.Control;
}
// Change mouse button state.
var button = args.Event.Button;
switch (button) {
case 1: m_mouseState |= MouseToolAction.MouseButton.Left; break;
case 2: m_mouseState |= MouseToolAction.MouseButton.Middle; break;
case 3: m_mouseState |= MouseToolAction.MouseButton.Right; break;
}
var viewTransform = this.CurrentViewTransform;
m_mouseDownViewTransform = viewTransform;
// Set mouse down locations.
var px = args.Event.X;
var py = args.Event.Y;
this.m_mouseDownControlPosition = new Cairo.PointD (px, py);
var inv = viewTransform.Clone () as Matrix;
inv.Invert ();
inv.TransformPoint (ref px, ref py);
this.m_mouseDownViewPosition = new Cairo.PointD (px, py);
// If pressing a mouse button, complete the previous mouse tool action.
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseUp != null) {
this.m_currentMouseToolAction.MouseUp (px, py);
}
}
// Find the mouse tool action that matches the current state.
m_currentMouseToolAction = null;
foreach (var mouseToolAction in m_mouseToolActions) {
if (mouseToolAction.Button == m_mouseState &&
mouseToolAction.Modifier == m_modifierState) {
this.m_currentMouseToolAction = mouseToolAction;
if (this.m_currentMouseToolAction.MouseDown != null) {
this.m_currentMouseToolAction.MouseDown (px, py);
}
return;
}
}
};
m_control.ButtonReleaseEvent += delegate(object o, Gtk.ButtonReleaseEventArgs args) {
// Change keyboard modifier state.
var shift = (args.Event.State & ModifierType.ShiftMask) == ModifierType.ShiftMask;
var ctrl = (args.Event.State & ModifierType.ControlMask) == ModifierType.ControlMask;
if (shift) {
m_modifierState &= ~MouseToolAction.ModifierKey.Shift;
}
if (ctrl) {
m_modifierState &= ~MouseToolAction.ModifierKey.Control;
}
// Change mouse button state.
var button = args.Event.Button;
switch (button) {
case 1: m_mouseState &= ~MouseToolAction.MouseButton.Left; break;
case 2: m_mouseState &= ~MouseToolAction.MouseButton.Middle; break;
case 3: m_mouseState &= ~MouseToolAction.MouseButton.Right; break;
}
var px = args.Event.X;
var py = args.Event.Y;
var inv = this.m_mouseDownViewTransform.Clone () as Matrix;
inv.Invert ();
inv.TransformPoint (ref px, ref py);
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseUp != null) {
this.m_currentMouseToolAction.MouseUp (px, py);
}
}
this.m_currentMouseToolAction = null;
};
m_control.MotionNotifyEvent += delegate(object o, Gtk.MotionNotifyEventArgs args) {
if (ReferenceEquals (this.m_mouseDownViewTransform, null)) {return;}
var px = args.Event.X;
var py = args.Event.Y;
var inv = this.m_mouseDownViewTransform.Clone () as Matrix;
inv.Invert ();
inv.TransformPoint (ref px, ref py);
if (this.m_currentMouseToolAction != null) {
if (this.m_currentMouseToolAction.MouseMove != null) {
this.m_currentMouseToolAction.MouseMove (px, py);
}
}
};
m_control.AddEvents ((int)(
EventMask.ButtonPressMask
| EventMask.ButtonReleaseMask
| EventMask.PointerMotionMask));
}