mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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257 lines
8.1 KiB
C++
257 lines
8.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Original Author: Eric J. Burley (ericb@neoplanet.com)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsResizerFrame.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDOMNodeList.h"
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#include "nsGkAtoms.h"
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#include "nsINameSpaceManager.h"
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#include "nsIWidget.h"
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#include "nsPresContext.h"
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#include "nsIDocShell.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsIBaseWindow.h"
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#include "nsPIDOMWindow.h"
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#include "nsGUIEvent.h"
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#include "nsEventDispatcher.h"
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//
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// NS_NewResizerFrame
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//
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// Creates a new Resizer frame and returns it
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//
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nsIFrame*
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NS_NewResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsResizerFrame(aPresShell, aContext);
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} // NS_NewResizerFrame
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nsResizerFrame::nsResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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:nsTitleBarFrame(aPresShell, aContext)
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{
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}
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NS_IMETHODIMP
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nsResizerFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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nsWeakFrame weakFrame(this);
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PRBool doDefault = PR_TRUE;
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// what direction should we go in?
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Direction direction = GetDirection();
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switch (aEvent->message) {
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case NS_MOUSE_BUTTON_DOWN: {
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if (aEvent->eventStructType == NS_MOUSE_EVENT &&
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static_cast<nsMouseEvent*>(aEvent)->button ==
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nsMouseEvent::eLeftButton)
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{
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nsresult rv = NS_OK;
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// ask the widget implementation to begin a resize drag if it can
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rv = aEvent->widget->BeginResizeDrag(aEvent,
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direction.mHorizontal, direction.mVertical);
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if (rv == NS_ERROR_NOT_IMPLEMENTED) {
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// there's no native resize support,
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// we need to window resizing ourselves
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// we're tracking.
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mTrackingMouseMove = PR_TRUE;
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// start capture.
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aEvent->widget->CaptureMouse(PR_TRUE);
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CaptureMouseEvents(aPresContext,PR_TRUE);
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// remember current mouse coordinates.
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mLastPoint = aEvent->refPoint;
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aEvent->widget->GetScreenBounds(mWidgetRect);
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}
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = PR_FALSE;
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}
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}
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break;
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case NS_MOUSE_BUTTON_UP: {
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if(mTrackingMouseMove && aEvent->eventStructType == NS_MOUSE_EVENT &&
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static_cast<nsMouseEvent*>(aEvent)->button ==
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nsMouseEvent::eLeftButton)
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{
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// we're done tracking.
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mTrackingMouseMove = PR_FALSE;
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// end capture
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aEvent->widget->CaptureMouse(PR_FALSE);
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CaptureMouseEvents(aPresContext,PR_FALSE);
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = PR_FALSE;
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}
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}
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break;
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case NS_MOUSE_MOVE: {
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if(mTrackingMouseMove)
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{
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// get the document and the window - should this be cached?
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nsPIDOMWindow *domWindow =
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aPresContext->PresShell()->GetDocument()->GetWindow();
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NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
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nsCOMPtr<nsIDocShellTreeItem> docShellAsItem =
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do_QueryInterface(domWindow->GetDocShell());
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NS_ENSURE_TRUE(docShellAsItem, NS_ERROR_FAILURE);
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nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
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docShellAsItem->GetTreeOwner(getter_AddRefs(treeOwner));
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nsCOMPtr<nsIBaseWindow> window(do_QueryInterface(treeOwner));
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if (!window) {
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return NS_OK;
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}
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PRInt32 x,y,cx,cy;
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window->GetPositionAndSize(&x,&y,&cx,&cy);
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nsIntPoint oldWindowTopLeft(x, y);
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// both MouseMove and direction are negative when pointing to the
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// top and left, and positive when pointing to the bottom and right
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nsIntPoint mouseMove(aEvent->refPoint - mLastPoint);
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AdjustDimensions(&x, &cx, mouseMove.x, direction.mHorizontal);
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AdjustDimensions(&y, &cy, mouseMove.y, direction.mVertical);
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// remember the last mouse point, relative to the *new* window
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mLastPoint = aEvent->refPoint + (oldWindowTopLeft - nsIntPoint(x, y));
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window->SetPositionAndSize(x,y,cx,cy,PR_TRUE); // do the repaint.
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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doDefault = PR_FALSE;
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}
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}
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break;
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case NS_MOUSE_CLICK:
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if (NS_IS_MOUSE_LEFT_CLICK(aEvent))
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{
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MouseClicked(aPresContext, aEvent);
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}
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break;
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}
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if (doDefault && weakFrame.IsAlive())
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return nsTitleBarFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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else
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return NS_OK;
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}
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/* adjust the window position and size according to the mouse movement and
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* the resizer direction
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*/
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void
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nsResizerFrame::AdjustDimensions(PRInt32* aPos, PRInt32* aSize,
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PRInt32 aMovement, PRInt8 aResizerDirection)
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{
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switch(aResizerDirection)
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{
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case -1: // only move the window when the direction is top and/or left
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*aPos+= aMovement;
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case 1: // falling through: the window is resized in both cases
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*aSize+= aResizerDirection*aMovement;
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}
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}
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/* returns a Direction struct containing the horizontal and vertical direction
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*/
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nsResizerFrame::Direction
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nsResizerFrame::GetDirection()
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{
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static const nsIContent::AttrValuesArray strings[] =
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{&nsGkAtoms::topleft, &nsGkAtoms::top, &nsGkAtoms::topright,
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&nsGkAtoms::left, &nsGkAtoms::right,
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&nsGkAtoms::bottomleft, &nsGkAtoms::bottom, &nsGkAtoms::bottomright,
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nsnull};
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static const Direction directions[] =
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{{-1, -1}, {0, -1}, {1, -1},
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{-1, 0}, {1, 0},
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{-1, 1}, {0, 1}, {1, 1}
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};
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if (!GetContent())
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return directions[0]; // default: topleft
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PRInt32 index = GetContent()->FindAttrValueIn(kNameSpaceID_None,
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nsGkAtoms::dir,
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strings, eCaseMatters);
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if(index < 0)
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return directions[0]; // default: topleft
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else
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return directions[index];
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}
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void
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nsResizerFrame::MouseClicked(nsPresContext* aPresContext, nsGUIEvent *aEvent)
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{
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// Execute the oncommand event handler.
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nsEventStatus status = nsEventStatus_eIgnore;
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nsXULCommandEvent event(aEvent ? NS_IS_TRUSTED_EVENT(aEvent) : PR_FALSE,
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NS_XUL_COMMAND, nsnull);
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nsEventDispatcher::Dispatch(mContent, aPresContext, &event, nsnull, &status);
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}
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