mirror of
https://github.com/mozilla/gecko-dev.git
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392 lines
9.2 KiB
C++
392 lines
9.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsThrobber.h"
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#include "nsIFactory.h"
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#include "nsIWidget.h"
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#include "nsVoidArray.h"
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#include "nsITimer.h"
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#include "nsIImageGroup.h"
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#include "nsIImageObserver.h"
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#include "nsIImageRequest.h"
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#include "nsFont.h"
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#include "nsIRenderingContext.h"
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#include "nsIFontMetrics.h"
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#include "nsIComponentManager.h"
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#include "nsWidgetsCID.h"
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#include "nsCRT.h"
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#include "prprf.h"
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#include "nsIDeviceContext.h"
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static NS_DEFINE_IID(kChildCID, NS_CHILD_CID);
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static NS_DEFINE_IID(kIWidgetIID, NS_IWIDGET_IID);
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static NS_DEFINE_IID(kIImageObserverIID, NS_IIMAGEREQUESTOBSERVER_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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#define THROB_NUM 14
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#define THROBBER_AT "resource:/res/throbber/anims%02d.gif"
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nsThrobber* nsThrobber::NewThrobber()
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{
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nsThrobber* t = new nsThrobber();
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if (t) {
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NS_ADDREF(t);
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}
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return t;
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}
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//----------------------------------------------------------------------
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nsVoidArray* nsThrobber::gThrobbers;
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nsThrobber*
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nsThrobber::FindThrobberFor(nsIWidget* aWidget)
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{
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if (gThrobbers) {
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PRInt32 i, n = gThrobbers->Count();
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for (i = 0; i < n; i++) {
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nsThrobber* th = (nsThrobber*) gThrobbers->ElementAt(i);
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if (nsnull != th) {
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if (th->mWidget == aWidget) {
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return th;
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}
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}
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}
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}
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return nsnull;
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}
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void
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nsThrobber::AddThrobber(nsThrobber* aThrobber)
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{
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if (gThrobbers) {
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gThrobbers->AppendElement(aThrobber);
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}
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}
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void
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nsThrobber::RemoveThrobber(nsThrobber* aThrobber)
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{
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if (gThrobbers) {
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gThrobbers->RemoveElement(aThrobber);
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}
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}
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nsEventStatus PR_CALLBACK
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nsThrobber::HandleThrobberEvent(nsGUIEvent *aEvent)
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{
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nsThrobber* throbber = FindThrobberFor(aEvent->widget);
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if (nsnull == throbber) {
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return nsEventStatus_eIgnore;
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}
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switch (aEvent->message)
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{
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case NS_PAINT:
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{
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nsPaintEvent *pe = (nsPaintEvent *)aEvent;
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nsIRenderingContext *cx = pe->renderingContext;
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nsRect bounds;
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nsIImageRequest *imgreq;
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nsIImage *img;
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PRBool clipState;
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pe->widget->GetClientBounds(bounds);
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cx->SetClipRect(*pe->rect, nsClipCombine_kReplace, clipState);
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cx->SetColor(NS_RGB(255, 255, 255));
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cx->DrawLine(0, bounds.height - 1, 0, 0);
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cx->DrawLine(0, 0, bounds.width, 0);
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cx->SetColor(NS_RGB(128, 128, 128));
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cx->DrawLine(bounds.width - 1, 1, bounds.width - 1, bounds.height - 1);
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cx->DrawLine(bounds.width - 1, bounds.height - 1, 0, bounds.height - 1);
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imgreq = (nsIImageRequest *)
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throbber->mImages->ElementAt(throbber->mIndex);
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if ((nsnull == imgreq) || (nsnull == (img = imgreq->GetImage())))
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{
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char str[10];
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nsFont tfont = nsFont("monospace", 0, 0, 0, 0, 10);
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nsIFontMetrics *met;
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nscoord w, h;
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cx->SetColor(NS_RGB(0, 0, 0));
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cx->FillRect(1, 1, bounds.width - 2, bounds.height - 2);
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PR_snprintf(str, sizeof(str), "%02d", throbber->mIndex);
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cx->SetColor(NS_RGB(255, 255, 255));
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cx->SetFont(tfont);
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cx->GetFontMetrics(met);
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if (nsnull != met)
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{
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cx->GetWidth(str, w);
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met->GetHeight(h);
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cx->DrawString(str, PRUint32(2), (bounds.width - w) >> 1, (bounds.height - h) >> 1);
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NS_RELEASE(met);
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}
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}
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else
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{
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cx->DrawImage(img, 1, 1);
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NS_RELEASE(img);
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}
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break;
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}
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case NS_MOUSE_LEFT_BUTTON_UP:
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// XXX wire up to API
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//gTheViewer->GoTo(nsString("http://www.mozilla.org"));
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break;
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case NS_MOUSE_ENTER:
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aEvent->widget->SetCursor(eCursor_hyperlink);
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break;
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case NS_MOUSE_EXIT:
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aEvent->widget->SetCursor(eCursor_standard);
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break;
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}
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return nsEventStatus_eIgnore;
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}
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//----------------------------------------------------------------------
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PRInt32 nsThrobber::gNumThrobbers;
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// Note: operator new zeros our memory
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nsThrobber::nsThrobber()
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{
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NS_INIT_REFCNT();
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if (0 == gNumThrobbers++) {
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gThrobbers = new nsVoidArray;
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}
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AddThrobber(this);
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}
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nsThrobber::~nsThrobber()
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{
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Destroy();
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}
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void
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nsThrobber::Destroy()
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{
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if (mWidget) {
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mWidget->Destroy();
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NS_RELEASE(mWidget);
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}
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RemoveThrobber(this);
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DestroyThrobberImages();
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if (0 == --gNumThrobbers) {
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delete gThrobbers;
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// Do this in case an event shows up later for the throbber...
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gThrobbers = nsnull;
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}
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}
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NS_IMPL_ISUPPORTS(nsThrobber, kIImageObserverIID)
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nsresult
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nsThrobber::Init(nsIWidget* aParent, const nsRect& aBounds, const nsString& aFileNameMask, PRInt32 aNumImages)
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{
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mWidth = aBounds.width;
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mHeight = aBounds.height;
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mNumImages = aNumImages;
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// Create widget
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nsresult rv = nsComponentManager::CreateInstance(kChildCID, nsnull, kIWidgetIID, (void**)&mWidget);
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if (NS_OK != rv) {
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return rv;
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}
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mWidget->Create(aParent, aBounds, HandleThrobberEvent, NULL);
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return LoadThrobberImages(aFileNameMask, aNumImages);
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}
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nsresult
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nsThrobber::MoveTo(PRInt32 aX, PRInt32 aY)
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{
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NS_PRECONDITION(nsnull != mWidget, "no widget");
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mWidget->Resize(aX, aY, mWidth, mHeight, PR_TRUE);
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return NS_OK;
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}
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nsresult
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nsThrobber::Show()
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{
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mWidget->Show(PR_TRUE);
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return NS_OK;
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}
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nsresult
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nsThrobber::Hide()
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{
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mWidget->Show(PR_FALSE);
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return NS_OK;
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}
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nsresult
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nsThrobber::Start()
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{
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mRunning = PR_TRUE;
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return NS_OK;
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}
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nsresult
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nsThrobber::Stop()
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{
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mRunning = PR_FALSE;
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mIndex = 0;
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mWidget->Invalidate(PR_FALSE);
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return NS_OK;
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}
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void
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nsThrobber::Notify(nsIImageRequest *aImageRequest,
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nsIImage *aImage,
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nsImageNotification aNotificationType,
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PRInt32 aParam1, PRInt32 aParam2,
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void *aParam3)
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{
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if (aNotificationType == nsImageNotification_kImageComplete) {
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mCompletedImages++;
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// Remove ourselves as an observer of the image request object, because
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// the image request objects each hold a reference to us. This avoids a
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// circular reference problem. If we don't, our ref count will never reach
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// 0 and we won't get destroyed and neither will the image request objects
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aImageRequest->RemoveObserver((nsIImageRequestObserver*)this);
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}
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}
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void
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nsThrobber::NotifyError(nsIImageRequest *aImageRequest,
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nsImageError aErrorType)
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{
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}
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void
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nsThrobber::ThrobTimerCallback(nsITimer *aTimer, void *aClosure)
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{
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nsThrobber* throbber = (nsThrobber*)aClosure;
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throbber->Tick();
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}
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void
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nsThrobber::Tick()
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{
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if (mRunning) {
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mIndex++;
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if (mIndex >= mNumImages)
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mIndex = 0;
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mWidget->Invalidate(PR_TRUE);
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} else if (mCompletedImages == (PRUint32)mNumImages) {
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mWidget->Invalidate(PR_TRUE);
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mCompletedImages = 0;
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}
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#ifndef REPEATING_TIMERS
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nsresult rv;
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mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_OK == rv) {
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mTimer->Init(ThrobTimerCallback, this, 33);
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}
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#endif
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}
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nsresult
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nsThrobber::LoadThrobberImages(const nsString& aFileNameMask, PRInt32 aNumImages)
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{
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nsresult rv;
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char url[2000];
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mImages = new nsVoidArray(mNumImages);
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if (nsnull == mImages) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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rv = NS_NewImageGroup(&mImageGroup);
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if (NS_OK != rv) {
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return rv;
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}
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nsIDeviceContext *deviceCtx = mWidget->GetDeviceContext();
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mImageGroup->Init(deviceCtx, nsnull);
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NS_RELEASE(deviceCtx);
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mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_OK != rv) {
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return rv;
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}
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mTimer->Init(ThrobTimerCallback, this, 33, NS_PRIORITY_NORMAL, NS_TYPE_REPEATING_SLACK);
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char * mask = aFileNameMask.ToNewCString();
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for (PRInt32 cnt = 0; cnt < mNumImages; cnt++)
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{
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PR_snprintf(url, sizeof(url), mask, cnt);
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nscolor bgcolor = NS_RGB(0, 0, 0);
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mImages->InsertElementAt(mImageGroup->GetImage(url,
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(nsIImageRequestObserver *)this,
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&bgcolor,
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mWidth - 2,
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mHeight - 2, 0),
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cnt);
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}
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if (nsnull != mask)
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nsMemory::Free(mask);
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mWidget->Invalidate(PR_TRUE);
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return rv;
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}
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void
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nsThrobber::DestroyThrobberImages()
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{
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if (mTimer) {
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mTimer->Cancel();
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}
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if (mImageGroup) {
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mImageGroup->Interrupt();
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for (PRInt32 cnt = 0; cnt < mNumImages; cnt++) {
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nsIImageRequest *imgreq = (nsIImageRequest*) mImages->ElementAt(cnt);
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NS_IF_RELEASE(imgreq);
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}
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NS_RELEASE(mImageGroup);
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}
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if (mImages) {
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delete mImages;
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mImages = nsnull;
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}
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}
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