int XButtonRelease(int w, int client_data, int call_data, int continue_to_dispatch) {
int result = super.XButtonRelease(w, client_data, call_data, continue_to_dispatch);
if (result != 0) return result;
XButtonEvent xEvent = new XButtonEvent();
OS.memmove(xEvent, call_data, XButtonEvent.sizeof);
if (xEvent.button != 1) return result;
if (!dragging) return result;
dragging = false;
int[] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(handle, argList, argList.length / 2);
int border = argList[5];
int width = argList[1] + (border * 2), height = argList[3] + (border * 2);
Event event = new Event();
event.time = xEvent.time;
event.x = lastX;
event.y = lastY;
event.width = width;
event.height = height;
drawBand(lastX, lastY, width, height);
sendEvent(SWT.Selection, event);
if (isDisposed()) return result;
if (event.doit) {
if ((style & SWT.SMOOTH) != 0) {
setBounds(event.x, event.y, width, height);
// widget could be disposed at this point
}
}
return result;
}
int XPointerMotion(int w, int client_data, int call_data, int continue_to_dispatch) {
int result = super.XPointerMotion(w, client_data, call_data, continue_to_dispatch);
if (result != 0) return result;
XMotionEvent xEvent = new XMotionEvent();
OS.memmove(xEvent, call_data, XMotionEvent.sizeof);
if (!dragging || (xEvent.state & OS.Button1Mask) == 0) return result;
short[] x_root = new short[1], y_root = new short[1];
OS.XtTranslateCoords(handle, (short) 0, (short) 0, x_root, y_root);
int eventX = xEvent.x_root - x_root[0], eventY = xEvent.y_root - y_root[0];
int[] argList1 = {
OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0
};
OS.XtGetValues(handle, argList1, argList1.length / 2);
int border = argList1[9],
x = ((short) argList1[1]) - border,
y = ((short) argList1[3]) - border;
int width = argList1[5] + (border * 2), height = argList1[7] + (border * 2);
int[] argList2 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(parent.handle, argList2, argList2.length / 2);
int parentBorder = argList2[5];
int parentWidth = argList2[1] + (parentBorder * 2);
int parentHeight = argList2[3] + (parentBorder * 2);
int newX = lastX, newY = lastY;
if ((style & SWT.VERTICAL) != 0) {
newX = Math.min(Math.max(0, eventX + x - startX - parentBorder), parentWidth - width);
} else {
newY = Math.min(Math.max(0, eventY + y - startY - parentBorder), parentHeight - height);
}
if (newX == lastX && newY == lastY) return result;
drawBand(lastX, lastY, width, height);
Event event = new Event();
event.time = xEvent.time;
event.x = newX;
event.y = newY;
event.width = width;
event.height = height;
if ((style & SWT.SMOOTH) == 0) {
event.detail = SWT.DRAG;
}
sendEvent(SWT.Selection, event);
if (isDisposed()) return result;
if (event.doit) {
lastX = event.x;
lastY = event.y;
}
parent.update(true);
drawBand(lastX, lastY, width, height);
if ((style & SWT.SMOOTH) != 0) {
setBounds(lastX, lastY, width, height);
// widget could be disposed at this point
}
return result;
}
int XButtonPress(int w, int client_data, int call_data, int continue_to_dispatch) {
int result = super.XButtonPress(w, client_data, call_data, continue_to_dispatch);
if (result != 0) return result;
XButtonEvent xEvent = new XButtonEvent();
OS.memmove(xEvent, call_data, XButtonEvent.sizeof);
if (xEvent.button != 1) return result;
short[] x_root = new short[1], y_root = new short[1];
OS.XtTranslateCoords(handle, (short) 0, (short) 0, x_root, y_root);
startX = xEvent.x_root - x_root[0];
startY = xEvent.y_root - y_root[0];
int[] argList = {OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(handle, argList, argList.length / 2);
int border = argList[9], width = argList[5] + (border * 2), height = argList[7] + (border * 2);
lastX = ((short) argList[1]) - border;
lastY = ((short) argList[3]) - border;
Event event = new Event();
event.time = xEvent.time;
event.x = lastX;
event.y = lastY;
event.width = width;
event.height = height;
if ((style & SWT.SMOOTH) == 0) {
event.detail = SWT.DRAG;
}
sendEvent(SWT.Selection, event);
if (isDisposed()) return result;
if (event.doit) {
dragging = true;
lastX = event.x;
lastY = event.y;
parent.update(true);
drawBand(event.x, event.y, width, height);
if ((style & SWT.SMOOTH) != 0) {
setBounds(event.x, event.y, width, height);
// widget could be disposed at this point
}
}
return result;
}
int XKeyPress(int w, int client_data, int call_data, int continue_to_dispatch) {
int result = super.XKeyPress(w, client_data, call_data, continue_to_dispatch);
if (result != 0) return result;
XKeyEvent xEvent = new XKeyEvent();
OS.memmove(xEvent, call_data, XKeyEvent.sizeof);
byte[] buffer = new byte[1];
int[] keysym = new int[1];
OS.XLookupString(xEvent, buffer, buffer.length, keysym, null);
switch (keysym[0]) {
case OS.XK_Left:
case OS.XK_Right:
case OS.XK_Up:
case OS.XK_Down:
int xChange = 0, yChange = 0;
int stepSize = PAGE_INCREMENT;
if ((xEvent.state & OS.ControlMask) != 0) stepSize = INCREMENT;
if ((style & SWT.VERTICAL) != 0) {
if (keysym[0] == OS.XK_Up || keysym[0] == OS.XK_Down) break;
xChange = keysym[0] == OS.XK_Left ? -stepSize : stepSize;
} else {
if (keysym[0] == OS.XK_Left || keysym[0] == OS.XK_Right) break;
yChange = keysym[0] == OS.XK_Up ? -stepSize : stepSize;
}
int[] argList1 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(handle, argList1, argList1.length / 2);
int border = argList1[5];
int width = argList1[1] + (border * 2), height = argList1[3] + (border * 2);
int[] argList2 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(parent.handle, argList2, argList2.length / 2);
int parentBorder = argList2[5];
int parentWidth = argList2[1] + (parentBorder * 2);
int parentHeight = argList2[3] + (parentBorder * 2);
int newX = lastX, newY = lastY;
if ((style & SWT.VERTICAL) != 0) {
newX =
Math.min(Math.max(0, lastX + xChange - parentBorder - startX), parentWidth - width);
} else {
newY =
Math.min(Math.max(0, lastY + yChange - parentBorder - startY), parentHeight - height);
}
if (newX == lastX && newY == lastY) return result;
/* Ensure that the pointer image does not change */
int xDisplay = display.xDisplay;
int xWindow = OS.XtWindow(parent.handle);
int ptrGrabResult =
OS.XGrabPointer(
xDisplay,
xWindow,
1,
OS.None,
OS.GrabModeAsync,
OS.GrabModeAsync,
OS.None,
cursor,
OS.CurrentTime);
Event event = new Event();
event.time = xEvent.time;
event.x = newX;
event.y = newY;
event.width = width;
event.height = height;
sendEvent(SWT.Selection, event);
if (ptrGrabResult == OS.GrabSuccess) OS.XUngrabPointer(xDisplay, OS.CurrentTime);
if (isDisposed()) break;
if (event.doit) {
lastX = event.x;
lastY = event.y;
if ((style & SWT.SMOOTH) != 0) {
setBounds(event.x, event.y, width, height);
if (isDisposed()) break;
}
int cursorX = event.x, cursorY = event.y;
if ((style & SWT.VERTICAL) != 0) {
cursorY += height / 2;
} else {
cursorX += width / 2;
}
OS.XWarpPointer(xDisplay, OS.None, xWindow, 0, 0, 0, 0, cursorX, cursorY);
}
break;
}
return result;
}